Clean up directory structure, improve README

Also this should make GitHub ignore the vendored code for the purpose
of detecting programming languages used in the repository. See
https://github.com/github-linguist/linguist/blob/main/docs/overrides.md#vendored-code

1 files changed, 65227 insertions, 0 deletions

diff --git a/priv/static/vendored/video.js/alt/video.debug.js b/priv/static/vendored/video.js/alt/video.debug.js
new file mode 100644
index 0000000..0a687f7
--- /dev/null
+++ b/priv/static/vendored/video.js/alt/video.debug.js
@@ -0,0 +1,65227 @@
+/**
+ * @license
+ * Video.js 8.12.0 <http://videojs.com/>
+ * Copyright Brightcove, Inc. <https://www.brightcove.com/>
+ * Available under Apache License Version 2.0
+ * <https://github.com/videojs/video.js/blob/main/LICENSE>
+ *
+ * Includes vtt.js <https://github.com/mozilla/vtt.js>
+ * Available under Apache License Version 2.0
+ * <https://github.com/mozilla/vtt.js/blob/main/LICENSE>
+ */
+
+(function (global, factory) {
+  typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
+  typeof define === 'function' && define.amd ? define(factory) :
+  (global = typeof globalThis !== 'undefined' ? globalThis : global || self, global.videojs = factory());
+})(this, (function () { 'use strict';
+
+  var version$5 = "8.12.0";
+
+  /**
+   * An Object that contains lifecycle hooks as keys which point to an array
+   * of functions that are run when a lifecycle is triggered
+   *
+   * @private
+   */
+  const hooks_ = {};
+
+  /**
+   * Get a list of hooks for a specific lifecycle
+   *
+   * @param  {string} type
+   *         the lifecycle to get hooks from
+   *
+   * @param  {Function|Function[]} [fn]
+   *         Optionally add a hook (or hooks) to the lifecycle that your are getting.
+   *
+   * @return {Array}
+   *         an array of hooks, or an empty array if there are none.
+   */
+  const hooks = function (type, fn) {
+    hooks_[type] = hooks_[type] || [];
+    if (fn) {
+      hooks_[type] = hooks_[type].concat(fn);
+    }
+    return hooks_[type];
+  };
+
+  /**
+   * Add a function hook to a specific videojs lifecycle.
+   *
+   * @param {string} type
+   *        the lifecycle to hook the function to.
+   *
+   * @param {Function|Function[]}
+   *        The function or array of functions to attach.
+   */
+  const hook = function (type, fn) {
+    hooks(type, fn);
+  };
+
+  /**
+   * Remove a hook from a specific videojs lifecycle.
+   *
+   * @param  {string} type
+   *         the lifecycle that the function hooked to
+   *
+   * @param  {Function} fn
+   *         The hooked function to remove
+   *
+   * @return {boolean}
+   *         The function that was removed or undef
+   */
+  const removeHook = function (type, fn) {
+    const index = hooks(type).indexOf(fn);
+    if (index <= -1) {
+      return false;
+    }
+    hooks_[type] = hooks_[type].slice();
+    hooks_[type].splice(index, 1);
+    return true;
+  };
+
+  /**
+   * Add a function hook that will only run once to a specific videojs lifecycle.
+   *
+   * @param {string} type
+   *        the lifecycle to hook the function to.
+   *
+   * @param {Function|Function[]}
+   *        The function or array of functions to attach.
+   */
+  const hookOnce = function (type, fn) {
+    hooks(type, [].concat(fn).map(original => {
+      const wrapper = (...args) => {
+        removeHook(type, wrapper);
+        return original(...args);
+      };
+      return wrapper;
+    }));
+  };
+
+  /**
+   * @file fullscreen-api.js
+   * @module fullscreen-api
+   */
+
+  /**
+   * Store the browser-specific methods for the fullscreen API.
+   *
+   * @type {Object}
+   * @see [Specification]{@link https://fullscreen.spec.whatwg.org}
+   * @see [Map Approach From Screenfull.js]{@link https://github.com/sindresorhus/screenfull.js}
+   */
+  const FullscreenApi = {
+    prefixed: true
+  };
+
+  // browser API methods
+  const apiMap = [['requestFullscreen', 'exitFullscreen', 'fullscreenElement', 'fullscreenEnabled', 'fullscreenchange', 'fullscreenerror', 'fullscreen'],
+  // WebKit
+  ['webkitRequestFullscreen', 'webkitExitFullscreen', 'webkitFullscreenElement', 'webkitFullscreenEnabled', 'webkitfullscreenchange', 'webkitfullscreenerror', '-webkit-full-screen']];
+  const specApi = apiMap[0];
+  let browserApi;
+
+  // determine the supported set of functions
+  for (let i = 0; i < apiMap.length; i++) {
+    // check for exitFullscreen function
+    if (apiMap[i][1] in document) {
+      browserApi = apiMap[i];
+      break;
+    }
+  }
+
+  // map the browser API names to the spec API names
+  if (browserApi) {
+    for (let i = 0; i < browserApi.length; i++) {
+      FullscreenApi[specApi[i]] = browserApi[i];
+    }
+    FullscreenApi.prefixed = browserApi[0] !== specApi[0];
+  }
+
+  /**
+   * @file create-logger.js
+   * @module create-logger
+   */
+
+  // This is the private tracking variable for the logging history.
+  let history = [];
+
+  /**
+   * Log messages to the console and history based on the type of message
+   *
+   * @private
+   * @param  {string} name
+   *         The name of the console method to use.
+   *
+   * @param  {Object} log
+   *         The arguments to be passed to the matching console method.
+   *
+   * @param {string} [styles]
+   *        styles for name
+   */
+  const LogByTypeFactory = (name, log, styles) => (type, level, args) => {
+    const lvl = log.levels[level];
+    const lvlRegExp = new RegExp(`^(${lvl})$`);
+    let resultName = name;
+    if (type !== 'log') {
+      // Add the type to the front of the message when it's not "log".
+      args.unshift(type.toUpperCase() + ':');
+    }
+    if (styles) {
+      resultName = `%c${name}`;
+      args.unshift(styles);
+    }
+
+    // Add console prefix after adding to history.
+    args.unshift(resultName + ':');
+
+    // Add a clone of the args at this point to history.
+    if (history) {
+      history.push([].concat(args));
+
+      // only store 1000 history entries
+      const splice = history.length - 1000;
+      history.splice(0, splice > 0 ? splice : 0);
+    }
+
+    // If there's no console then don't try to output messages, but they will
+    // still be stored in history.
+    if (!window.console) {
+      return;
+    }
+
+    // Was setting these once outside of this function, but containing them
+    // in the function makes it easier to test cases where console doesn't exist
+    // when the module is executed.
+    let fn = window.console[type];
+    if (!fn && type === 'debug') {
+      // Certain browsers don't have support for console.debug. For those, we
+      // should default to the closest comparable log.
+      fn = window.console.info || window.console.log;
+    }
+
+    // Bail out if there's no console or if this type is not allowed by the
+    // current logging level.
+    if (!fn || !lvl || !lvlRegExp.test(type)) {
+      return;
+    }
+    fn[Array.isArray(args) ? 'apply' : 'call'](window.console, args);
+  };
+  function createLogger$1(name, delimiter = ':', styles = '') {
+    // This is the private tracking variable for logging level.
+    let level = 'info';
+
+    // the curried logByType bound to the specific log and history
+    let logByType;
+
+    /**
+     * Logs plain debug messages. Similar to `console.log`.
+     *
+     * Due to [limitations](https://github.com/jsdoc3/jsdoc/issues/955#issuecomment-313829149)
+     * of our JSDoc template, we cannot properly document this as both a function
+     * and a namespace, so its function signature is documented here.
+     *
+     * #### Arguments
+     * ##### *args
+     * *[]
+     *
+     * Any combination of values that could be passed to `console.log()`.
+     *
+     * #### Return Value
+     *
+     * `undefined`
+     *
+     * @namespace
+     * @param    {...*} args
+     *           One or more messages or objects that should be logged.
+     */
+    const log = function (...args) {
+      logByType('log', level, args);
+    };
+
+    // This is the logByType helper that the logging methods below use
+    logByType = LogByTypeFactory(name, log, styles);
+
+    /**
+     * Create a new subLogger which chains the old name to the new name.
+     *
+     * For example, doing `videojs.log.createLogger('player')` and then using that logger will log the following:
+     * ```js
+     *  mylogger('foo');
+     *  // > VIDEOJS: player: foo
+     * ```
+     *
+     * @param {string} subName
+     *        The name to add call the new logger
+     * @param {string} [subDelimiter]
+     *        Optional delimiter
+     * @param {string} [subStyles]
+     *        Optional styles
+     * @return {Object}
+     */
+    log.createLogger = (subName, subDelimiter, subStyles) => {
+      const resultDelimiter = subDelimiter !== undefined ? subDelimiter : delimiter;
+      const resultStyles = subStyles !== undefined ? subStyles : styles;
+      const resultName = `${name} ${resultDelimiter} ${subName}`;
+      return createLogger$1(resultName, resultDelimiter, resultStyles);
+    };
+
+    /**
+     * Create a new logger.
+     *
+     * @param {string} newName
+     *        The name for the new logger
+     * @param {string} [newDelimiter]
+     *        Optional delimiter
+     * @param {string} [newStyles]
+     *        Optional styles
+     * @return {Object}
+     */
+    log.createNewLogger = (newName, newDelimiter, newStyles) => {
+      return createLogger$1(newName, newDelimiter, newStyles);
+    };
+
+    /**
+     * Enumeration of available logging levels, where the keys are the level names
+     * and the values are `|`-separated strings containing logging methods allowed
+     * in that logging level. These strings are used to create a regular expression
+     * matching the function name being called.
+     *
+     * Levels provided by Video.js are:
+     *
+     * - `off`: Matches no calls. Any value that can be cast to `false` will have
+     *   this effect. The most restrictive.
+     * - `all`: Matches only Video.js-provided functions (`debug`, `log`,
+     *   `log.warn`, and `log.error`).
+     * - `debug`: Matches `log.debug`, `log`, `log.warn`, and `log.error` calls.
+     * - `info` (default): Matches `log`, `log.warn`, and `log.error` calls.
+     * - `warn`: Matches `log.warn` and `log.error` calls.
+     * - `error`: Matches only `log.error` calls.
+     *
+     * @type {Object}
+     */
+    log.levels = {
+      all: 'debug|log|warn|error',
+      off: '',
+      debug: 'debug|log|warn|error',
+      info: 'log|warn|error',
+      warn: 'warn|error',
+      error: 'error',
+      DEFAULT: level
+    };
+
+    /**
+     * Get or set the current logging level.
+     *
+     * If a string matching a key from {@link module:log.levels} is provided, acts
+     * as a setter.
+     *
+     * @param  {'all'|'debug'|'info'|'warn'|'error'|'off'} [lvl]
+     *         Pass a valid level to set a new logging level.
+     *
+     * @return {string}
+     *         The current logging level.
+     */
+    log.level = lvl => {
+      if (typeof lvl === 'string') {
+        if (!log.levels.hasOwnProperty(lvl)) {
+          throw new Error(`"${lvl}" in not a valid log level`);
+        }
+        level = lvl;
+      }
+      return level;
+    };
+
+    /**
+     * Returns an array containing everything that has been logged to the history.
+     *
+     * This array is a shallow clone of the internal history record. However, its
+     * contents are _not_ cloned; so, mutating objects inside this array will
+     * mutate them in history.
+     *
+     * @return {Array}
+     */
+    log.history = () => history ? [].concat(history) : [];
+
+    /**
+     * Allows you to filter the history by the given logger name
+     *
+     * @param {string} fname
+     *        The name to filter by
+     *
+     * @return {Array}
+     *         The filtered list to return
+     */
+    log.history.filter = fname => {
+      return (history || []).filter(historyItem => {
+        // if the first item in each historyItem includes `fname`, then it's a match
+        return new RegExp(`.*${fname}.*`).test(historyItem[0]);
+      });
+    };
+
+    /**
+     * Clears the internal history tracking, but does not prevent further history
+     * tracking.
+     */
+    log.history.clear = () => {
+      if (history) {
+        history.length = 0;
+      }
+    };
+
+    /**
+     * Disable history tracking if it is currently enabled.
+     */
+    log.history.disable = () => {
+      if (history !== null) {
+        history.length = 0;
+        history = null;
+      }
+    };
+
+    /**
+     * Enable history tracking if it is currently disabled.
+     */
+    log.history.enable = () => {
+      if (history === null) {
+        history = [];
+      }
+    };
+
+    /**
+     * Logs error messages. Similar to `console.error`.
+     *
+     * @param {...*} args
+     *        One or more messages or objects that should be logged as an error
+     */
+    log.error = (...args) => logByType('error', level, args);
+
+    /**
+     * Logs warning messages. Similar to `console.warn`.
+     *
+     * @param {...*} args
+     *        One or more messages or objects that should be logged as a warning.
+     */
+    log.warn = (...args) => logByType('warn', level, args);
+
+    /**
+     * Logs debug messages. Similar to `console.debug`, but may also act as a comparable
+     * log if `console.debug` is not available
+     *
+     * @param {...*} args
+     *        One or more messages or objects that should be logged as debug.
+     */
+    log.debug = (...args) => logByType('debug', level, args);
+    return log;
+  }
+
+  /**
+   * @file log.js
+   * @module log
+   */
+  const log$1 = createLogger$1('VIDEOJS');
+  const createLogger = log$1.createLogger;
+
+  /**
+   * @file obj.js
+   * @module obj
+   */
+
+  /**
+   * @callback obj:EachCallback
+   *
+   * @param {*} value
+   *        The current key for the object that is being iterated over.
+   *
+   * @param {string} key
+   *        The current key-value for object that is being iterated over
+   */
+
+  /**
+   * @callback obj:ReduceCallback
+   *
+   * @param {*} accum
+   *        The value that is accumulating over the reduce loop.
+   *
+   * @param {*} value
+   *        The current key for the object that is being iterated over.
+   *
+   * @param {string} key
+   *        The current key-value for object that is being iterated over
+   *
+   * @return {*}
+   *         The new accumulated value.
+   */
+  const toString$1 = Object.prototype.toString;
+
+  /**
+   * Get the keys of an Object
+   *
+   * @param {Object}
+   *        The Object to get the keys from
+   *
+   * @return {string[]}
+   *         An array of the keys from the object. Returns an empty array if the
+   *         object passed in was invalid or had no keys.
+   *
+   * @private
+   */
+  const keys = function (object) {
+    return isObject$1(object) ? Object.keys(object) : [];
+  };
+
+  /**
+   * Array-like iteration for objects.
+   *
+   * @param {Object} object
+   *        The object to iterate over
+   *
+   * @param {obj:EachCallback} fn
+   *        The callback function which is called for each key in the object.
+   */
+  function each(object, fn) {
+    keys(object).forEach(key => fn(object[key], key));
+  }
+
+  /**
+   * Array-like reduce for objects.
+   *
+   * @param {Object} object
+   *        The Object that you want to reduce.
+   *
+   * @param {Function} fn
+   *         A callback function which is called for each key in the object. It
+   *         receives the accumulated value and the per-iteration value and key
+   *         as arguments.
+   *
+   * @param {*} [initial = 0]
+   *        Starting value
+   *
+   * @return {*}
+   *         The final accumulated value.
+   */
+  function reduce(object, fn, initial = 0) {
+    return keys(object).reduce((accum, key) => fn(accum, object[key], key), initial);
+  }
+
+  /**
+   * Returns whether a value is an object of any kind - including DOM nodes,
+   * arrays, regular expressions, etc. Not functions, though.
+   *
+   * This avoids the gotcha where using `typeof` on a `null` value
+   * results in `'object'`.
+   *
+   * @param  {Object} value
+   * @return {boolean}
+   */
+  function isObject$1(value) {
+    return !!value && typeof value === 'object';
+  }
+
+  /**
+   * Returns whether an object appears to be a "plain" object - that is, a
+   * direct instance of `Object`.
+   *
+   * @param  {Object} value
+   * @return {boolean}
+   */
+  function isPlain(value) {
+    return isObject$1(value) && toString$1.call(value) === '[object Object]' && value.constructor === Object;
+  }
+
+  /**
+   * Merge two objects recursively.
+   *
+   * Performs a deep merge like
+   * {@link https://lodash.com/docs/4.17.10#merge|lodash.merge}, but only merges
+   * plain objects (not arrays, elements, or anything else).
+   *
+   * Non-plain object values will be copied directly from the right-most
+   * argument.
+   *
+   * @param   {Object[]} sources
+   *          One or more objects to merge into a new object.
+   *
+   * @return {Object}
+   *          A new object that is the merged result of all sources.
+   */
+  function merge$2(...sources) {
+    const result = {};
+    sources.forEach(source => {
+      if (!source) {
+        return;
+      }
+      each(source, (value, key) => {
+        if (!isPlain(value)) {
+          result[key] = value;
+          return;
+        }
+        if (!isPlain(result[key])) {
+          result[key] = {};
+        }
+        result[key] = merge$2(result[key], value);
+      });
+    });
+    return result;
+  }
+
+  /**
+   * Returns an array of values for a given object
+   *
+   * @param  {Object} source - target object
+   * @return {Array<unknown>} - object values
+   */
+  function values$1(source = {}) {
+    const result = [];
+    for (const key in source) {
+      if (source.hasOwnProperty(key)) {
+        const value = source[key];
+        result.push(value);
+      }
+    }
+    return result;
+  }
+
+  /**
+   * Object.defineProperty but "lazy", which means that the value is only set after
+   * it is retrieved the first time, rather than being set right away.
+   *
+   * @param {Object} obj the object to set the property on
+   * @param {string} key the key for the property to set
+   * @param {Function} getValue the function used to get the value when it is needed.
+   * @param {boolean} setter whether a setter should be allowed or not
+   */
+  function defineLazyProperty(obj, key, getValue, setter = true) {
+    const set = value => Object.defineProperty(obj, key, {
+      value,
+      enumerable: true,
+      writable: true
+    });
+    const options = {
+      configurable: true,
+      enumerable: true,
+      get() {
+        const value = getValue();
+        set(value);
+        return value;
+      }
+    };
+    if (setter) {
+      options.set = set;
+    }
+    return Object.defineProperty(obj, key, options);
+  }
+
+  var Obj = /*#__PURE__*/Object.freeze({
+    __proto__: null,
+    each: each,
+    reduce: reduce,
+    isObject: isObject$1,
+    isPlain: isPlain,
+    merge: merge$2,
+    values: values$1,
+    defineLazyProperty: defineLazyProperty
+  });
+
+  /**
+   * @file browser.js
+   * @module browser
+   */
+
+  /**
+   * Whether or not this device is an iPod.
+   *
+   * @static
+   * @type {Boolean}
+   */
+  let IS_IPOD = false;
+
+  /**
+   * The detected iOS version - or `null`.
+   *
+   * @static
+   * @type {string|null}
+   */
+  let IOS_VERSION = null;
+
+  /**
+   * Whether or not this is an Android device.
+   *
+   * @static
+   * @type {Boolean}
+   */
+  let IS_ANDROID = false;
+
+  /**
+   * The detected Android version - or `null` if not Android or indeterminable.
+   *
+   * @static
+   * @type {number|string|null}
+   */
+  let ANDROID_VERSION;
+
+  /**
+   * Whether or not this is Mozilla Firefox.
+   *
+   * @static
+   * @type {Boolean}
+   */
+  let IS_FIREFOX = false;
+
+  /**
+   * Whether or not this is Microsoft Edge.
+   *
+   * @static
+   * @type {Boolean}
+   */
+  let IS_EDGE = false;
+
+  /**
+   * Whether or not this is any Chromium Browser
+   *
+   * @static
+   * @type {Boolean}
+   */
+  let IS_CHROMIUM = false;
+
+  /**
+   * Whether or not this is any Chromium browser that is not Edge.
+   *
+   * This will also be `true` for Chrome on iOS, which will have different support
+   * as it is actually Safari under the hood.
+   *
+   * Deprecated, as the behaviour to not match Edge was to prevent Legacy Edge's UA matching.
+   * IS_CHROMIUM should be used instead.
+   * "Chromium but not Edge" could be explicitly tested with IS_CHROMIUM && !IS_EDGE
+   *
+   * @static
+   * @deprecated
+   * @type {Boolean}
+   */
+  let IS_CHROME = false;
+
+  /**
+   * The detected Chromium version - or `null`.
+   *
+   * @static
+   * @type {number|null}
+   */
+  let CHROMIUM_VERSION = null;
+
+  /**
+   * The detected Google Chrome version - or `null`.
+   * This has always been the _Chromium_ version, i.e. would return on Chromium Edge.
+   * Deprecated, use CHROMIUM_VERSION instead.
+   *
+   * @static
+   * @deprecated
+   * @type {number|null}
+   */
+  let CHROME_VERSION = null;
+
+  /**
+   * The detected Internet Explorer version - or `null`.
+   *
+   * @static
+   * @deprecated
+   * @type {number|null}
+   */
+  let IE_VERSION = null;
+
+  /**
+   * Whether or not this is desktop Safari.
+   *
+   * @static
+   * @type {Boolean}
+   */
+  let IS_SAFARI = false;
+
+  /**
+   * Whether or not this is a Windows machine.
+   *
+   * @static
+   * @type {Boolean}
+   */
+  let IS_WINDOWS = false;
+
+  /**
+   * Whether or not this device is an iPad.
+   *
+   * @static
+   * @type {Boolean}
+   */
+  let IS_IPAD = false;
+
+  /**
+   * Whether or not this device is an iPhone.
+   *
+   * @static
+   * @type {Boolean}
+   */
+  // The Facebook app's UIWebView identifies as both an iPhone and iPad, so
+  // to identify iPhones, we need to exclude iPads.
+  // http://artsy.github.io/blog/2012/10/18/the-perils-of-ios-user-agent-sniffing/
+  let IS_IPHONE = false;
+
+  /**
+   * Whether or not this is a Tizen device.
+   *
+   * @static
+   * @type {Boolean}
+   */
+  let IS_TIZEN = false;
+
+  /**
+   * Whether or not this is a WebOS device.
+   *
+   * @static
+   * @type {Boolean}
+   */
+  let IS_WEBOS = false;
+
+  /**
+   * Whether or not this is a Smart TV (Tizen or WebOS) device.
+   *
+   * @static
+   * @type {Boolean}
+   */
+  let IS_SMART_TV = false;
+
+  /**
+   * Whether or not this device is touch-enabled.
+   *
+   * @static
+   * @const
+   * @type {Boolean}
+   */
+  const TOUCH_ENABLED = Boolean(isReal() && ('ontouchstart' in window || window.navigator.maxTouchPoints || window.DocumentTouch && window.document instanceof window.DocumentTouch));
+  const UAD = window.navigator && window.navigator.userAgentData;
+  if (UAD && UAD.platform && UAD.brands) {
+    // If userAgentData is present, use it instead of userAgent to avoid warnings
+    // Currently only implemented on Chromium
+    // userAgentData does not expose Android version, so ANDROID_VERSION remains `null`
+
+    IS_ANDROID = UAD.platform === 'Android';
+    IS_EDGE = Boolean(UAD.brands.find(b => b.brand === 'Microsoft Edge'));
+    IS_CHROMIUM = Boolean(UAD.brands.find(b => b.brand === 'Chromium'));
+    IS_CHROME = !IS_EDGE && IS_CHROMIUM;
+    CHROMIUM_VERSION = CHROME_VERSION = (UAD.brands.find(b => b.brand === 'Chromium') || {}).version || null;
+    IS_WINDOWS = UAD.platform === 'Windows';
+  }
+
+  // If the browser is not Chromium, either userAgentData is not present which could be an old Chromium browser,
+  //  or it's a browser that has added userAgentData since that we don't have tests for yet. In either case,
+  // the checks need to be made agiainst the regular userAgent string.
+  if (!IS_CHROMIUM) {
+    const USER_AGENT = window.navigator && window.navigator.userAgent || '';
+    IS_IPOD = /iPod/i.test(USER_AGENT);
+    IOS_VERSION = function () {
+      const match = USER_AGENT.match(/OS (\d+)_/i);
+      if (match && match[1]) {
+        return match[1];
+      }
+      return null;
+    }();
+    IS_ANDROID = /Android/i.test(USER_AGENT);
+    ANDROID_VERSION = function () {
+      // This matches Android Major.Minor.Patch versions
+      // ANDROID_VERSION is Major.Minor as a Number, if Minor isn't available, then only Major is returned
+      const match = USER_AGENT.match(/Android (\d+)(?:\.(\d+))?(?:\.(\d+))*/i);
+      if (!match) {
+        return null;
+      }
+      const major = match[1] && parseFloat(match[1]);
+      const minor = match[2] && parseFloat(match[2]);
+      if (major && minor) {
+        return parseFloat(match[1] + '.' + match[2]);
+      } else if (major) {
+        return major;
+      }
+      return null;
+    }();
+    IS_FIREFOX = /Firefox/i.test(USER_AGENT);
+    IS_EDGE = /Edg/i.test(USER_AGENT);
+    IS_CHROMIUM = /Chrome/i.test(USER_AGENT) || /CriOS/i.test(USER_AGENT);
+    IS_CHROME = !IS_EDGE && IS_CHROMIUM;
+    CHROMIUM_VERSION = CHROME_VERSION = function () {
+      const match = USER_AGENT.match(/(Chrome|CriOS)\/(\d+)/);
+      if (match && match[2]) {
+        return parseFloat(match[2]);
+      }
+      return null;
+    }();
+    IE_VERSION = function () {
+      const result = /MSIE\s(\d+)\.\d/.exec(USER_AGENT);
+      let version = result && parseFloat(result[1]);
+      if (!version && /Trident\/7.0/i.test(USER_AGENT) && /rv:11.0/.test(USER_AGENT)) {
+        // IE 11 has a different user agent string than other IE versions
+        version = 11.0;
+      }
+      return version;
+    }();
+    IS_TIZEN = /Tizen/i.test(USER_AGENT);
+    IS_WEBOS = /Web0S/i.test(USER_AGENT);
+    IS_SMART_TV = IS_TIZEN || IS_WEBOS;
+    IS_SAFARI = /Safari/i.test(USER_AGENT) && !IS_CHROME && !IS_ANDROID && !IS_EDGE && !IS_SMART_TV;
+    IS_WINDOWS = /Windows/i.test(USER_AGENT);
+    IS_IPAD = /iPad/i.test(USER_AGENT) || IS_SAFARI && TOUCH_ENABLED && !/iPhone/i.test(USER_AGENT);
+    IS_IPHONE = /iPhone/i.test(USER_AGENT) && !IS_IPAD;
+  }
+
+  /**
+   * Whether or not this is an iOS device.
+   *
+   * @static
+   * @const
+   * @type {Boolean}
+   */
+  const IS_IOS = IS_IPHONE || IS_IPAD || IS_IPOD;
+
+  /**
+   * Whether or not this is any flavor of Safari - including iOS.
+   *
+   * @static
+   * @const
+   * @type {Boolean}
+   */
+  const IS_ANY_SAFARI = (IS_SAFARI || IS_IOS) && !IS_CHROME;
+
+  var browser = /*#__PURE__*/Object.freeze({
+    __proto__: null,
+    get IS_IPOD () { return IS_IPOD; },
+    get IOS_VERSION () { return IOS_VERSION; },
+    get IS_ANDROID () { return IS_ANDROID; },
+    get ANDROID_VERSION () { return ANDROID_VERSION; },
+    get IS_FIREFOX () { return IS_FIREFOX; },
+    get IS_EDGE () { return IS_EDGE; },
+    get IS_CHROMIUM () { return IS_CHROMIUM; },
+    get IS_CHROME () { return IS_CHROME; },
+    get CHROMIUM_VERSION () { return CHROMIUM_VERSION; },
+    get CHROME_VERSION () { return CHROME_VERSION; },
+    get IE_VERSION () { return IE_VERSION; },
+    get IS_SAFARI () { return IS_SAFARI; },
+    get IS_WINDOWS () { return IS_WINDOWS; },
+    get IS_IPAD () { return IS_IPAD; },
+    get IS_IPHONE () { return IS_IPHONE; },
+    get IS_TIZEN () { return IS_TIZEN; },
+    get IS_WEBOS () { return IS_WEBOS; },
+    get IS_SMART_TV () { return IS_SMART_TV; },
+    TOUCH_ENABLED: TOUCH_ENABLED,
+    IS_IOS: IS_IOS,
+    IS_ANY_SAFARI: IS_ANY_SAFARI
+  });
+
+  /**
+   * @file dom.js
+   * @module dom
+   */
+
+  /**
+   * Detect if a value is a string with any non-whitespace characters.
+   *
+   * @private
+   * @param  {string} str
+   *         The string to check
+   *
+   * @return {boolean}
+   *         Will be `true` if the string is non-blank, `false` otherwise.
+   *
+   */
+  function isNonBlankString(str) {
+    // we use str.trim as it will trim any whitespace characters
+    // from the front or back of non-whitespace characters. aka
+    // Any string that contains non-whitespace characters will
+    // still contain them after `trim` but whitespace only strings
+    // will have a length of 0, failing this check.
+    return typeof str === 'string' && Boolean(str.trim());
+  }
+
+  /**
+   * Throws an error if the passed string has whitespace. This is used by
+   * class methods to be relatively consistent with the classList API.
+   *
+   * @private
+   * @param  {string} str
+   *         The string to check for whitespace.
+   *
+   * @throws {Error}
+   *         Throws an error if there is whitespace in the string.
+   */
+  function throwIfWhitespace(str) {
+    // str.indexOf instead of regex because str.indexOf is faster performance wise.
+    if (str.indexOf(' ') >= 0) {
+      throw new Error('class has illegal whitespace characters');
+    }
+  }
+
+  /**
+   * Whether the current DOM interface appears to be real (i.e. not simulated).
+   *
+   * @return {boolean}
+   *         Will be `true` if the DOM appears to be real, `false` otherwise.
+   */
+  function isReal() {
+    // Both document and window will never be undefined thanks to `global`.
+    return document === window.document;
+  }
+
+  /**
+   * Determines, via duck typing, whether or not a value is a DOM element.
+   *
+   * @param  {*} value
+   *         The value to check.
+   *
+   * @return {boolean}
+   *         Will be `true` if the value is a DOM element, `false` otherwise.
+   */
+  function isEl(value) {
+    return isObject$1(value) && value.nodeType === 1;
+  }
+
+  /**
+   * Determines if the current DOM is embedded in an iframe.
+   *
+   * @return {boolean}
+   *         Will be `true` if the DOM is embedded in an iframe, `false`
+   *         otherwise.
+   */
+  function isInFrame() {
+    // We need a try/catch here because Safari will throw errors when attempting
+    // to get either `parent` or `self`
+    try {
+      return window.parent !== window.self;
+    } catch (x) {
+      return true;
+    }
+  }
+
+  /**
+   * Creates functions to query the DOM using a given method.
+   *
+   * @private
+   * @param   {string} method
+   *          The method to create the query with.
+   *
+   * @return  {Function}
+   *          The query method
+   */
+  function createQuerier(method) {
+    return function (selector, context) {
+      if (!isNonBlankString(selector)) {
+        return document[method](null);
+      }
+      if (isNonBlankString(context)) {
+        context = document.querySelector(context);
+      }
+      const ctx = isEl(context) ? context : document;
+      return ctx[method] && ctx[method](selector);
+    };
+  }
+
+  /**
+   * Creates an element and applies properties, attributes, and inserts content.
+   *
+   * @param  {string} [tagName='div']
+   *         Name of tag to be created.
+   *
+   * @param  {Object} [properties={}]
+   *         Element properties to be applied.
+   *
+   * @param  {Object} [attributes={}]
+   *         Element attributes to be applied.
+   *
+   * @param {ContentDescriptor} [content]
+   *        A content descriptor object.
+   *
+   * @return {Element}
+   *         The element that was created.
+   */
+  function createEl(tagName = 'div', properties = {}, attributes = {}, content) {
+    const el = document.createElement(tagName);
+    Object.getOwnPropertyNames(properties).forEach(function (propName) {
+      const val = properties[propName];
+
+      // Handle textContent since it's not supported everywhere and we have a
+      // method for it.
+      if (propName === 'textContent') {
+        textContent(el, val);
+      } else if (el[propName] !== val || propName === 'tabIndex') {
+        el[propName] = val;
+      }
+    });
+    Object.getOwnPropertyNames(attributes).forEach(function (attrName) {
+      el.setAttribute(attrName, attributes[attrName]);
+    });
+    if (content) {
+      appendContent(el, content);
+    }
+    return el;
+  }
+
+  /**
+   * Injects text into an element, replacing any existing contents entirely.
+   *
+   * @param  {HTMLElement} el
+   *         The element to add text content into
+   *
+   * @param  {string} text
+   *         The text content to add.
+   *
+   * @return {Element}
+   *         The element with added text content.
+   */
+  function textContent(el, text) {
+    if (typeof el.textContent === 'undefined') {
+      el.innerText = text;
+    } else {
+      el.textContent = text;
+    }
+    return el;
+  }
+
+  /**
+   * Insert an element as the first child node of another
+   *
+   * @param {Element} child
+   *        Element to insert
+   *
+   * @param {Element} parent
+   *        Element to insert child into
+   */
+  function prependTo(child, parent) {
+    if (parent.firstChild) {
+      parent.insertBefore(child, parent.firstChild);
+    } else {
+      parent.appendChild(child);
+    }
+  }
+
+  /**
+   * Check if an element has a class name.
+   *
+   * @param  {Element} element
+   *         Element to check
+   *
+   * @param  {string} classToCheck
+   *         Class name to check for
+   *
+   * @return {boolean}
+   *         Will be `true` if the element has a class, `false` otherwise.
+   *
+   * @throws {Error}
+   *         Throws an error if `classToCheck` has white space.
+   */
+  function hasClass(element, classToCheck) {
+    throwIfWhitespace(classToCheck);
+    return element.classList.contains(classToCheck);
+  }
+
+  /**
+   * Add a class name to an element.
+   *
+   * @param  {Element} element
+   *         Element to add class name to.
+   *
+   * @param  {...string} classesToAdd
+   *         One or more class name to add.
+   *
+   * @return {Element}
+   *         The DOM element with the added class name.
+   */
+  function addClass(element, ...classesToAdd) {
+    element.classList.add(...classesToAdd.reduce((prev, current) => prev.concat(current.split(/\s+/)), []));
+    return element;
+  }
+
+  /**
+   * Remove a class name from an element.
+   *
+   * @param  {Element} element
+   *         Element to remove a class name from.
+   *
+   * @param  {...string} classesToRemove
+   *         One or more class name to remove.
+   *
+   * @return {Element}
+   *         The DOM element with class name removed.
+   */
+  function removeClass(element, ...classesToRemove) {
+    // Protect in case the player gets disposed
+    if (!element) {
+      log$1.warn("removeClass was called with an element that doesn't exist");
+      return null;
+    }
+    element.classList.remove(...classesToRemove.reduce((prev, current) => prev.concat(current.split(/\s+/)), []));
+    return element;
+  }
+
+  /**
+   * The callback definition for toggleClass.
+   *
+   * @callback module:dom~PredicateCallback
+   * @param    {Element} element
+   *           The DOM element of the Component.
+   *
+   * @param    {string} classToToggle
+   *           The `className` that wants to be toggled
+   *
+   * @return   {boolean|undefined}
+   *           If `true` is returned, the `classToToggle` will be added to the
+   *           `element`. If `false`, the `classToToggle` will be removed from
+   *           the `element`. If `undefined`, the callback will be ignored.
+   */
+
+  /**
+   * Adds or removes a class name to/from an element depending on an optional
+   * condition or the presence/absence of the class name.
+   *
+   * @param  {Element} element
+   *         The element to toggle a class name on.
+   *
+   * @param  {string} classToToggle
+   *         The class that should be toggled.
+   *
+   * @param  {boolean|module:dom~PredicateCallback} [predicate]
+   *         See the return value for {@link module:dom~PredicateCallback}
+   *
+   * @return {Element}
+   *         The element with a class that has been toggled.
+   */
+  function toggleClass(element, classToToggle, predicate) {
+    if (typeof predicate === 'function') {
+      predicate = predicate(element, classToToggle);
+    }
+    if (typeof predicate !== 'boolean') {
+      predicate = undefined;
+    }
+    classToToggle.split(/\s+/).forEach(className => element.classList.toggle(className, predicate));
+    return element;
+  }
+
+  /**
+   * Apply attributes to an HTML element.
+   *
+   * @param {Element} el
+   *        Element to add attributes to.
+   *
+   * @param {Object} [attributes]
+   *        Attributes to be applied.
+   */
+  function setAttributes(el, attributes) {
+    Object.getOwnPropertyNames(attributes).forEach(function (attrName) {
+      const attrValue = attributes[attrName];
+      if (attrValue === null || typeof attrValue === 'undefined' || attrValue === false) {
+        el.removeAttribute(attrName);
+      } else {
+        el.setAttribute(attrName, attrValue === true ? '' : attrValue);
+      }
+    });
+  }
+
+  /**
+   * Get an element's attribute values, as defined on the HTML tag.
+   *
+   * Attributes are not the same as properties. They're defined on the tag
+   * or with setAttribute.
+   *
+   * @param  {Element} tag
+   *         Element from which to get tag attributes.
+   *
+   * @return {Object}
+   *         All attributes of the element. Boolean attributes will be `true` or
+   *         `false`, others will be strings.
+   */
+  function getAttributes(tag) {
+    const obj = {};
+
+    // known boolean attributes
+    // we can check for matching boolean properties, but not all browsers
+    // and not all tags know about these attributes, so, we still want to check them manually
+    const knownBooleans = ['autoplay', 'controls', 'playsinline', 'loop', 'muted', 'default', 'defaultMuted'];
+    if (tag && tag.attributes && tag.attributes.length > 0) {
+      const attrs = tag.attributes;
+      for (let i = attrs.length - 1; i >= 0; i--) {
+        const attrName = attrs[i].name;
+        /** @type {boolean|string} */
+        let attrVal = attrs[i].value;
+
+        // check for known booleans
+        // the matching element property will return a value for typeof
+        if (knownBooleans.includes(attrName)) {
+          // the value of an included boolean attribute is typically an empty
+          // string ('') which would equal false if we just check for a false value.
+          // we also don't want support bad code like autoplay='false'
+          attrVal = attrVal !== null ? true : false;
+        }
+        obj[attrName] = attrVal;
+      }
+    }
+    return obj;
+  }
+
+  /**
+   * Get the value of an element's attribute.
+   *
+   * @param {Element} el
+   *        A DOM element.
+   *
+   * @param {string} attribute
+   *        Attribute to get the value of.
+   *
+   * @return {string}
+   *         The value of the attribute.
+   */
+  function getAttribute(el, attribute) {
+    return el.getAttribute(attribute);
+  }
+
+  /**
+   * Set the value of an element's attribute.
+   *
+   * @param {Element} el
+   *        A DOM element.
+   *
+   * @param {string} attribute
+   *        Attribute to set.
+   *
+   * @param {string} value
+   *        Value to set the attribute to.
+   */
+  function setAttribute(el, attribute, value) {
+    el.setAttribute(attribute, value);
+  }
+
+  /**
+   * Remove an element's attribute.
+   *
+   * @param {Element} el
+   *        A DOM element.
+   *
+   * @param {string} attribute
+   *        Attribute to remove.
+   */
+  function removeAttribute(el, attribute) {
+    el.removeAttribute(attribute);
+  }
+
+  /**
+   * Attempt to block the ability to select text.
+   */
+  function blockTextSelection() {
+    document.body.focus();
+    document.onselectstart = function () {
+      return false;
+    };
+  }
+
+  /**
+   * Turn off text selection blocking.
+   */
+  function unblockTextSelection() {
+    document.onselectstart = function () {
+      return true;
+    };
+  }
+
+  /**
+   * Identical to the native `getBoundingClientRect` function, but ensures that
+   * the method is supported at all (it is in all browsers we claim to support)
+   * and that the element is in the DOM before continuing.
+   *
+   * This wrapper function also shims properties which are not provided by some
+   * older browsers (namely, IE8).
+   *
+   * Additionally, some browsers do not support adding properties to a
+   * `ClientRect`/`DOMRect` object; so, we shallow-copy it with the standard
+   * properties (except `x` and `y` which are not widely supported). This helps
+   * avoid implementations where keys are non-enumerable.
+   *
+   * @param  {Element} el
+   *         Element whose `ClientRect` we want to calculate.
+   *
+   * @return {Object|undefined}
+   *         Always returns a plain object - or `undefined` if it cannot.
+   */
+  function getBoundingClientRect(el) {
+    if (el && el.getBoundingClientRect && el.parentNode) {
+      const rect = el.getBoundingClientRect();
+      const result = {};
+      ['bottom', 'height', 'left', 'right', 'top', 'width'].forEach(k => {
+        if (rect[k] !== undefined) {
+          result[k] = rect[k];
+        }
+      });
+      if (!result.height) {
+        result.height = parseFloat(computedStyle(el, 'height'));
+      }
+      if (!result.width) {
+        result.width = parseFloat(computedStyle(el, 'width'));
+      }
+      return result;
+    }
+  }
+
+  /**
+   * Represents the position of a DOM element on the page.
+   *
+   * @typedef  {Object} module:dom~Position
+   *
+   * @property {number} left
+   *           Pixels to the left.
+   *
+   * @property {number} top
+   *           Pixels from the top.
+   */
+
+  /**
+   * Get the position of an element in the DOM.
+   *
+   * Uses `getBoundingClientRect` technique from John Resig.
+   *
+   * @see http://ejohn.org/blog/getboundingclientrect-is-awesome/
+   *
+   * @param  {Element} el
+   *         Element from which to get offset.
+   *
+   * @return {module:dom~Position}
+   *         The position of the element that was passed in.
+   */
+  function findPosition(el) {
+    if (!el || el && !el.offsetParent) {
+      return {
+        left: 0,
+        top: 0,
+        width: 0,
+        height: 0
+      };
+    }
+    const width = el.offsetWidth;
+    const height = el.offsetHeight;
+    let left = 0;
+    let top = 0;
+    while (el.offsetParent && el !== document[FullscreenApi.fullscreenElement]) {
+      left += el.offsetLeft;
+      top += el.offsetTop;
+      el = el.offsetParent;
+    }
+    return {
+      left,
+      top,
+      width,
+      height
+    };
+  }
+
+  /**
+   * Represents x and y coordinates for a DOM element or mouse pointer.
+   *
+   * @typedef  {Object} module:dom~Coordinates
+   *
+   * @property {number} x
+   *           x coordinate in pixels
+   *
+   * @property {number} y
+   *           y coordinate in pixels
+   */
+
+  /**
+   * Get the pointer position within an element.
+   *
+   * The base on the coordinates are the bottom left of the element.
+   *
+   * @param  {Element} el
+   *         Element on which to get the pointer position on.
+   *
+   * @param  {Event} event
+   *         Event object.
+   *
+   * @return {module:dom~Coordinates}
+   *         A coordinates object corresponding to the mouse position.
+   *
+   */
+  function getPointerPosition(el, event) {
+    const translated = {
+      x: 0,
+      y: 0
+    };
+    if (IS_IOS) {
+      let item = el;
+      while (item && item.nodeName.toLowerCase() !== 'html') {
+        const transform = computedStyle(item, 'transform');
+        if (/^matrix/.test(transform)) {
+          const values = transform.slice(7, -1).split(/,\s/).map(Number);
+          translated.x += values[4];
+          translated.y += values[5];
+        } else if (/^matrix3d/.test(transform)) {
+          const values = transform.slice(9, -1).split(/,\s/).map(Number);
+          translated.x += values[12];
+          translated.y += values[13];
+        }
+        item = item.parentNode;
+      }
+    }
+    const position = {};
+    const boxTarget = findPosition(event.target);
+    const box = findPosition(el);
+    const boxW = box.width;
+    const boxH = box.height;
+    let offsetY = event.offsetY - (box.top - boxTarget.top);
+    let offsetX = event.offsetX - (box.left - boxTarget.left);
+    if (event.changedTouches) {
+      offsetX = event.changedTouches[0].pageX - box.left;
+      offsetY = event.changedTouches[0].pageY + box.top;
+      if (IS_IOS) {
+        offsetX -= translated.x;
+        offsetY -= translated.y;
+      }
+    }
+    position.y = 1 - Math.max(0, Math.min(1, offsetY / boxH));
+    position.x = Math.max(0, Math.min(1, offsetX / boxW));
+    return position;
+  }
+
+  /**
+   * Determines, via duck typing, whether or not a value is a text node.
+   *
+   * @param  {*} value
+   *         Check if this value is a text node.
+   *
+   * @return {boolean}
+   *         Will be `true` if the value is a text node, `false` otherwise.
+   */
+  function isTextNode$1(value) {
+    return isObject$1(value) && value.nodeType === 3;
+  }
+
+  /**
+   * Empties the contents of an element.
+   *
+   * @param  {Element} el
+   *         The element to empty children from
+   *
+   * @return {Element}
+   *         The element with no children
+   */
+  function emptyEl(el) {
+    while (el.firstChild) {
+      el.removeChild(el.firstChild);
+    }
+    return el;
+  }
+
+  /**
+   * This is a mixed value that describes content to be injected into the DOM
+   * via some method. It can be of the following types:
+   *
+   * Type       | Description
+   * -----------|-------------
+   * `string`   | The value will be normalized into a text node.
+   * `Element`  | The value will be accepted as-is.
+   * `Text`     | A TextNode. The value will be accepted as-is.
+   * `Array`    | A one-dimensional array of strings, elements, text nodes, or functions. These functions should return a string, element, or text node (any other return value, like an array, will be ignored).
+   * `Function` | A function, which is expected to return a string, element, text node, or array - any of the other possible values described above. This means that a content descriptor could be a function that returns an array of functions, but those second-level functions must return strings, elements, or text nodes.
+   *
+   * @typedef {string|Element|Text|Array|Function} ContentDescriptor
+   */
+
+  /**
+   * Normalizes content for eventual insertion into the DOM.
+   *
+   * This allows a wide range of content definition methods, but helps protect
+   * from falling into the trap of simply writing to `innerHTML`, which could
+   * be an XSS concern.
+   *
+   * The content for an element can be passed in multiple types and
+   * combinations, whose behavior is as follows:
+   *
+   * @param {ContentDescriptor} content
+   *        A content descriptor value.
+   *
+   * @return {Array}
+   *         All of the content that was passed in, normalized to an array of
+   *         elements or text nodes.
+   */
+  function normalizeContent(content) {
+    // First, invoke content if it is a function. If it produces an array,
+    // that needs to happen before normalization.
+    if (typeof content === 'function') {
+      content = content();
+    }
+
+    // Next up, normalize to an array, so one or many items can be normalized,
+    // filtered, and returned.
+    return (Array.isArray(content) ? content : [content]).map(value => {
+      // First, invoke value if it is a function to produce a new value,
+      // which will be subsequently normalized to a Node of some kind.
+      if (typeof value === 'function') {
+        value = value();
+      }
+      if (isEl(value) || isTextNode$1(value)) {
+        return value;
+      }
+      if (typeof value === 'string' && /\S/.test(value)) {
+        return document.createTextNode(value);
+      }
+    }).filter(value => value);
+  }
+
+  /**
+   * Normalizes and appends content to an element.
+   *
+   * @param  {Element} el
+   *         Element to append normalized content to.
+   *
+   * @param {ContentDescriptor} content
+   *        A content descriptor value.
+   *
+   * @return {Element}
+   *         The element with appended normalized content.
+   */
+  function appendContent(el, content) {
+    normalizeContent(content).forEach(node => el.appendChild(node));
+    return el;
+  }
+
+  /**
+   * Normalizes and inserts content into an element; this is identical to
+   * `appendContent()`, except it empties the element first.
+   *
+   * @param {Element} el
+   *        Element to insert normalized content into.
+   *
+   * @param {ContentDescriptor} content
+   *        A content descriptor value.
+   *
+   * @return {Element}
+   *         The element with inserted normalized content.
+   */
+  function insertContent(el, content) {
+    return appendContent(emptyEl(el), content);
+  }
+
+  /**
+   * Check if an event was a single left click.
+   *
+   * @param  {MouseEvent} event
+   *         Event object.
+   *
+   * @return {boolean}
+   *         Will be `true` if a single left click, `false` otherwise.
+   */
+  function isSingleLeftClick(event) {
+    // Note: if you create something draggable, be sure to
+    // call it on both `mousedown` and `mousemove` event,
+    // otherwise `mousedown` should be enough for a button
+
+    if (event.button === undefined && event.buttons === undefined) {
+      // Why do we need `buttons` ?
+      // Because, middle mouse sometimes have this:
+      // e.button === 0 and e.buttons === 4
+      // Furthermore, we want to prevent combination click, something like
+      // HOLD middlemouse then left click, that would be
+      // e.button === 0, e.buttons === 5
+      // just `button` is not gonna work
+
+      // Alright, then what this block does ?
+      // this is for chrome `simulate mobile devices`
+      // I want to support this as well
+
+      return true;
+    }
+    if (event.button === 0 && event.buttons === undefined) {
+      // Touch screen, sometimes on some specific device, `buttons`
+      // doesn't have anything (safari on ios, blackberry...)
+
+      return true;
+    }
+
+    // `mouseup` event on a single left click has
+    // `button` and `buttons` equal to 0
+    if (event.type === 'mouseup' && event.button === 0 && event.buttons === 0) {
+      return true;
+    }
+    if (event.button !== 0 || event.buttons !== 1) {
+      // This is the reason we have those if else block above
+      // if any special case we can catch and let it slide
+      // we do it above, when get to here, this definitely
+      // is-not-left-click
+
+      return false;
+    }
+    return true;
+  }
+
+  /**
+   * Finds a single DOM element matching `selector` within the optional
+   * `context` of another DOM element (defaulting to `document`).
+   *
+   * @param  {string} selector
+   *         A valid CSS selector, which will be passed to `querySelector`.
+   *
+   * @param  {Element|String} [context=document]
+   *         A DOM element within which to query. Can also be a selector
+   *         string in which case the first matching element will be used
+   *         as context. If missing (or no element matches selector), falls
+   *         back to `document`.
+   *
+   * @return {Element|null}
+   *         The element that was found or null.
+   */
+  const $ = createQuerier('querySelector');
+
+  /**
+   * Finds a all DOM elements matching `selector` within the optional
+   * `context` of another DOM element (defaulting to `document`).
+   *
+   * @param  {string} selector
+   *         A valid CSS selector, which will be passed to `querySelectorAll`.
+   *
+   * @param  {Element|String} [context=document]
+   *         A DOM element within which to query. Can also be a selector
+   *         string in which case the first matching element will be used
+   *         as context. If missing (or no element matches selector), falls
+   *         back to `document`.
+   *
+   * @return {NodeList}
+   *         A element list of elements that were found. Will be empty if none
+   *         were found.
+   *
+   */
+  const $$ = createQuerier('querySelectorAll');
+
+  /**
+   * A safe getComputedStyle.
+   *
+   * This is needed because in Firefox, if the player is loaded in an iframe with
+   * `display:none`, then `getComputedStyle` returns `null`, so, we do a
+   * null-check to make sure that the player doesn't break in these cases.
+   *
+   * @param    {Element} el
+   *           The element you want the computed style of
+   *
+   * @param    {string} prop
+   *           The property name you want
+   *
+   * @see      https://bugzilla.mozilla.org/show_bug.cgi?id=548397
+   */
+  function computedStyle(el, prop) {
+    if (!el || !prop) {
+      return '';
+    }
+    if (typeof window.getComputedStyle === 'function') {
+      let computedStyleValue;
+      try {
+        computedStyleValue = window.getComputedStyle(el);
+      } catch (e) {
+        return '';
+      }
+      return computedStyleValue ? computedStyleValue.getPropertyValue(prop) || computedStyleValue[prop] : '';
+    }
+    return '';
+  }
+
+  /**
+   * Copy document style sheets to another window.
+   *
+   * @param    {Window} win
+   *           The window element you want to copy the document style sheets to.
+   *
+   */
+  function copyStyleSheetsToWindow(win) {
+    [...document.styleSheets].forEach(styleSheet => {
+      try {
+        const cssRules = [...styleSheet.cssRules].map(rule => rule.cssText).join('');
+        const style = document.createElement('style');
+        style.textContent = cssRules;
+        win.document.head.appendChild(style);
+      } catch (e) {
+        const link = document.createElement('link');
+        link.rel = 'stylesheet';
+        link.type = styleSheet.type;
+        // For older Safari this has to be the string; on other browsers setting the MediaList works
+        link.media = styleSheet.media.mediaText;
+        link.href = styleSheet.href;
+        win.document.head.appendChild(link);
+      }
+    });
+  }
+
+  var Dom = /*#__PURE__*/Object.freeze({
+    __proto__: null,
+    isReal: isReal,
+    isEl: isEl,
+    isInFrame: isInFrame,
+    createEl: createEl,
+    textContent: textContent,
+    prependTo: prependTo,
+    hasClass: hasClass,
+    addClass: addClass,
+    removeClass: removeClass,
+    toggleClass: toggleClass,
+    setAttributes: setAttributes,
+    getAttributes: getAttributes,
+    getAttribute: getAttribute,
+    setAttribute: setAttribute,
+    removeAttribute: removeAttribute,
+    blockTextSelection: blockTextSelection,
+    unblockTextSelection: unblockTextSelection,
+    getBoundingClientRect: getBoundingClientRect,
+    findPosition: findPosition,
+    getPointerPosition: getPointerPosition,
+    isTextNode: isTextNode$1,
+    emptyEl: emptyEl,
+    normalizeContent: normalizeContent,
+    appendContent: appendContent,
+    insertContent: insertContent,
+    isSingleLeftClick: isSingleLeftClick,
+    $: $,
+    $$: $$,
+    computedStyle: computedStyle,
+    copyStyleSheetsToWindow: copyStyleSheetsToWindow
+  });
+
+  /**
+   * @file setup.js - Functions for setting up a player without
+   * user interaction based on the data-setup `attribute` of the video tag.
+   *
+   * @module setup
+   */
+  let _windowLoaded = false;
+  let videojs$1;
+
+  /**
+   * Set up any tags that have a data-setup `attribute` when the player is started.
+   */
+  const autoSetup = function () {
+    if (videojs$1.options.autoSetup === false) {
+      return;
+    }
+    const vids = Array.prototype.slice.call(document.getElementsByTagName('video'));
+    const audios = Array.prototype.slice.call(document.getElementsByTagName('audio'));
+    const divs = Array.prototype.slice.call(document.getElementsByTagName('video-js'));
+    const mediaEls = vids.concat(audios, divs);
+
+    // Check if any media elements exist
+    if (mediaEls && mediaEls.length > 0) {
+      for (let i = 0, e = mediaEls.length; i < e; i++) {
+        const mediaEl = mediaEls[i];
+
+        // Check if element exists, has getAttribute func.
+        if (mediaEl && mediaEl.getAttribute) {
+          // Make sure this player hasn't already been set up.
+          if (mediaEl.player === undefined) {
+            const options = mediaEl.getAttribute('data-setup');
+
+            // Check if data-setup attr exists.
+            // We only auto-setup if they've added the data-setup attr.
+            if (options !== null) {
+              // Create new video.js instance.
+              videojs$1(mediaEl);
+            }
+          }
+
+          // If getAttribute isn't defined, we need to wait for the DOM.
+        } else {
+          autoSetupTimeout(1);
+          break;
+        }
+      }
+
+      // No videos were found, so keep looping unless page is finished loading.
+    } else if (!_windowLoaded) {
+      autoSetupTimeout(1);
+    }
+  };
+
+  /**
+   * Wait until the page is loaded before running autoSetup. This will be called in
+   * autoSetup if `hasLoaded` returns false.
+   *
+   * @param {number} wait
+   *        How long to wait in ms
+   *
+   * @param {module:videojs} [vjs]
+   *        The videojs library function
+   */
+  function autoSetupTimeout(wait, vjs) {
+    // Protect against breakage in non-browser environments
+    if (!isReal()) {
+      return;
+    }
+    if (vjs) {
+      videojs$1 = vjs;
+    }
+    window.setTimeout(autoSetup, wait);
+  }
+
+  /**
+   * Used to set the internal tracking of window loaded state to true.
+   *
+   * @private
+   */
+  function setWindowLoaded() {
+    _windowLoaded = true;
+    window.removeEventListener('load', setWindowLoaded);
+  }
+  if (isReal()) {
+    if (document.readyState === 'complete') {
+      setWindowLoaded();
+    } else {
+      /**
+       * Listen for the load event on window, and set _windowLoaded to true.
+       *
+       * We use a standard event listener here to avoid incrementing the GUID
+       * before any players are created.
+       *
+       * @listens load
+       */
+      window.addEventListener('load', setWindowLoaded);
+    }
+  }
+
+  /**
+   * @file stylesheet.js
+   * @module stylesheet
+   */
+
+  /**
+   * Create a DOM style element given a className for it.
+   *
+   * @param {string} className
+   *        The className to add to the created style element.
+   *
+   * @return {Element}
+   *         The element that was created.
+   */
+  const createStyleElement = function (className) {
+    const style = document.createElement('style');
+    style.className = className;
+    return style;
+  };
+
+  /**
+   * Add text to a DOM element.
+   *
+   * @param {Element} el
+   *        The Element to add text content to.
+   *
+   * @param {string} content
+   *        The text to add to the element.
+   */
+  const setTextContent = function (el, content) {
+    if (el.styleSheet) {
+      el.styleSheet.cssText = content;
+    } else {
+      el.textContent = content;
+    }
+  };
+
+  /**
+   * @file dom-data.js
+   * @module dom-data
+   */
+
+  /**
+   * Element Data Store.
+   *
+   * Allows for binding data to an element without putting it directly on the
+   * element. Ex. Event listeners are stored here.
+   * (also from jsninja.com, slightly modified and updated for closure compiler)
+   *
+   * @type {Object}
+   * @private
+   */
+  var DomData = new WeakMap();
+
+  /**
+   * @file guid.js
+   * @module guid
+   */
+
+  // Default value for GUIDs. This allows us to reset the GUID counter in tests.
+  //
+  // The initial GUID is 3 because some users have come to rely on the first
+  // default player ID ending up as `vjs_video_3`.
+  //
+  // See: https://github.com/videojs/video.js/pull/6216
+  const _initialGuid = 3;
+
+  /**
+   * Unique ID for an element or function
+   *
+   * @type {Number}
+   */
+  let _guid = _initialGuid;
+
+  /**
+   * Get a unique auto-incrementing ID by number that has not been returned before.
+   *
+   * @return {number}
+   *         A new unique ID.
+   */
+  function newGUID() {
+    return _guid++;
+  }
+
+  /**
+   * @file events.js. An Event System (John Resig - Secrets of a JS Ninja http://jsninja.com/)
+   * (Original book version wasn't completely usable, so fixed some things and made Closure Compiler compatible)
+   * This should work very similarly to jQuery's events, however it's based off the book version which isn't as
+   * robust as jquery's, so there's probably some differences.
+   *
+   * @file events.js
+   * @module events
+   */
+
+  /**
+   * Clean up the listener cache and dispatchers
+   *
+   * @param {Element|Object} elem
+   *        Element to clean up
+   *
+   * @param {string} type
+   *        Type of event to clean up
+   */
+  function _cleanUpEvents(elem, type) {
+    if (!DomData.has(elem)) {
+      return;
+    }
+    const data = DomData.get(elem);
+
+    // Remove the events of a particular type if there are none left
+    if (data.handlers[type].length === 0) {
+      delete data.handlers[type];
+      // data.handlers[type] = null;
+      // Setting to null was causing an error with data.handlers
+
+      // Remove the meta-handler from the element
+      if (elem.removeEventListener) {
+        elem.removeEventListener(type, data.dispatcher, false);
+      } else if (elem.detachEvent) {
+        elem.detachEvent('on' + type, data.dispatcher);
+      }
+    }
+
+    // Remove the events object if there are no types left
+    if (Object.getOwnPropertyNames(data.handlers).length <= 0) {
+      delete data.handlers;
+      delete data.dispatcher;
+      delete data.disabled;
+    }
+
+    // Finally remove the element data if there is no data left
+    if (Object.getOwnPropertyNames(data).length === 0) {
+      DomData.delete(elem);
+    }
+  }
+
+  /**
+   * Loops through an array of event types and calls the requested method for each type.
+   *
+   * @param {Function} fn
+   *        The event method we want to use.
+   *
+   * @param {Element|Object} elem
+   *        Element or object to bind listeners to
+   *
+   * @param {string[]} types
+   *        Type of event to bind to.
+   *
+   * @param {Function} callback
+   *        Event listener.
+   */
+  function _handleMultipleEvents(fn, elem, types, callback) {
+    types.forEach(function (type) {
+      // Call the event method for each one of the types
+      fn(elem, type, callback);
+    });
+  }
+
+  /**
+   * Fix a native event to have standard property values
+   *
+   * @param {Object} event
+   *        Event object to fix.
+   *
+   * @return {Object}
+   *         Fixed event object.
+   */
+  function fixEvent(event) {
+    if (event.fixed_) {
+      return event;
+    }
+    function returnTrue() {
+      return true;
+    }
+    function returnFalse() {
+      return false;
+    }
+
+    // Test if fixing up is needed
+    // Used to check if !event.stopPropagation instead of isPropagationStopped
+    // But native events return true for stopPropagation, but don't have
+    // other expected methods like isPropagationStopped. Seems to be a problem
+    // with the Javascript Ninja code. So we're just overriding all events now.
+    if (!event || !event.isPropagationStopped || !event.isImmediatePropagationStopped) {
+      const old = event || window.event;
+      event = {};
+      // Clone the old object so that we can modify the values event = {};
+      // IE8 Doesn't like when you mess with native event properties
+      // Firefox returns false for event.hasOwnProperty('type') and other props
+      //  which makes copying more difficult.
+      // TODO: Probably best to create a whitelist of event props
+      for (const key in old) {
+        // Safari 6.0.3 warns you if you try to copy deprecated layerX/Y
+        // Chrome warns you if you try to copy deprecated keyboardEvent.keyLocation
+        // and webkitMovementX/Y
+        // Lighthouse complains if Event.path is copied
+        if (key !== 'layerX' && key !== 'layerY' && key !== 'keyLocation' && key !== 'webkitMovementX' && key !== 'webkitMovementY' && key !== 'path') {
+          // Chrome 32+ warns if you try to copy deprecated returnValue, but
+          // we still want to if preventDefault isn't supported (IE8).
+          if (!(key === 'returnValue' && old.preventDefault)) {
+            event[key] = old[key];
+          }
+        }
+      }
+
+      // The event occurred on this element
+      if (!event.target) {
+        event.target = event.srcElement || document;
+      }
+
+      // Handle which other element the event is related to
+      if (!event.relatedTarget) {
+        event.relatedTarget = event.fromElement === event.target ? event.toElement : event.fromElement;
+      }
+
+      // Stop the default browser action
+      event.preventDefault = function () {
+        if (old.preventDefault) {
+          old.preventDefault();
+        }
+        event.returnValue = false;
+        old.returnValue = false;
+        event.defaultPrevented = true;
+      };
+      event.defaultPrevented = false;
+
+      // Stop the event from bubbling
+      event.stopPropagation = function () {
+        if (old.stopPropagation) {
+          old.stopPropagation();
+        }
+        event.cancelBubble = true;
+        old.cancelBubble = true;
+        event.isPropagationStopped = returnTrue;
+      };
+      event.isPropagationStopped = returnFalse;
+
+      // Stop the event from bubbling and executing other handlers
+      event.stopImmediatePropagation = function () {
+        if (old.stopImmediatePropagation) {
+          old.stopImmediatePropagation();
+        }
+        event.isImmediatePropagationStopped = returnTrue;
+        event.stopPropagation();
+      };
+      event.isImmediatePropagationStopped = returnFalse;
+
+      // Handle mouse position
+      if (event.clientX !== null && event.clientX !== undefined) {
+        const doc = document.documentElement;
+        const body = document.body;
+        event.pageX = event.clientX + (doc && doc.scrollLeft || body && body.scrollLeft || 0) - (doc && doc.clientLeft || body && body.clientLeft || 0);
+        event.pageY = event.clientY + (doc && doc.scrollTop || body && body.scrollTop || 0) - (doc && doc.clientTop || body && body.clientTop || 0);
+      }
+
+      // Handle key presses
+      event.which = event.charCode || event.keyCode;
+
+      // Fix button for mouse clicks:
+      // 0 == left; 1 == middle; 2 == right
+      if (event.button !== null && event.button !== undefined) {
+        // The following is disabled because it does not pass videojs-standard
+        // and... yikes.
+        /* eslint-disable */
+        event.button = event.button & 1 ? 0 : event.button & 4 ? 1 : event.button & 2 ? 2 : 0;
+        /* eslint-enable */
+      }
+    }
+
+    event.fixed_ = true;
+    // Returns fixed-up instance
+    return event;
+  }
+
+  /**
+   * Whether passive event listeners are supported
+   */
+  let _supportsPassive;
+  const supportsPassive = function () {
+    if (typeof _supportsPassive !== 'boolean') {
+      _supportsPassive = false;
+      try {
+        const opts = Object.defineProperty({}, 'passive', {
+          get() {
+            _supportsPassive = true;
+          }
+        });
+        window.addEventListener('test', null, opts);
+        window.removeEventListener('test', null, opts);
+      } catch (e) {
+        // disregard
+      }
+    }
+    return _supportsPassive;
+  };
+
+  /**
+   * Touch events Chrome expects to be passive
+   */
+  const passiveEvents = ['touchstart', 'touchmove'];
+
+  /**
+   * Add an event listener to element
+   * It stores the handler function in a separate cache object
+   * and adds a generic handler to the element's event,
+   * along with a unique id (guid) to the element.
+   *
+   * @param {Element|Object} elem
+   *        Element or object to bind listeners to
+   *
+   * @param {string|string[]} type
+   *        Type of event to bind to.
+   *
+   * @param {Function} fn
+   *        Event listener.
+   */
+  function on(elem, type, fn) {
+    if (Array.isArray(type)) {
+      return _handleMultipleEvents(on, elem, type, fn);
+    }
+    if (!DomData.has(elem)) {
+      DomData.set(elem, {});
+    }
+    const data = DomData.get(elem);
+
+    // We need a place to store all our handler data
+    if (!data.handlers) {
+      data.handlers = {};
+    }
+    if (!data.handlers[type]) {
+      data.handlers[type] = [];
+    }
+    if (!fn.guid) {
+      fn.guid = newGUID();
+    }
+    data.handlers[type].push(fn);
+    if (!data.dispatcher) {
+      data.disabled = false;
+      data.dispatcher = function (event, hash) {
+        if (data.disabled) {
+          return;
+        }
+        event = fixEvent(event);
+        const handlers = data.handlers[event.type];
+        if (handlers) {
+          // Copy handlers so if handlers are added/removed during the process it doesn't throw everything off.
+          const handlersCopy = handlers.slice(0);
+          for (let m = 0, n = handlersCopy.length; m < n; m++) {
+            if (event.isImmediatePropagationStopped()) {
+              break;
+            } else {
+              try {
+                handlersCopy[m].call(elem, event, hash);
+              } catch (e) {
+                log$1.error(e);
+              }
+            }
+          }
+        }
+      };
+    }
+    if (data.handlers[type].length === 1) {
+      if (elem.addEventListener) {
+        let options = false;
+        if (supportsPassive() && passiveEvents.indexOf(type) > -1) {
+          options = {
+            passive: true
+          };
+        }
+        elem.addEventListener(type, data.dispatcher, options);
+      } else if (elem.attachEvent) {
+        elem.attachEvent('on' + type, data.dispatcher);
+      }
+    }
+  }
+
+  /**
+   * Removes event listeners from an element
+   *
+   * @param {Element|Object} elem
+   *        Object to remove listeners from.
+   *
+   * @param {string|string[]} [type]
+   *        Type of listener to remove. Don't include to remove all events from element.
+   *
+   * @param {Function} [fn]
+   *        Specific listener to remove. Don't include to remove listeners for an event
+   *        type.
+   */
+  function off(elem, type, fn) {
+    // Don't want to add a cache object through getElData if not needed
+    if (!DomData.has(elem)) {
+      return;
+    }
+    const data = DomData.get(elem);
+
+    // If no events exist, nothing to unbind
+    if (!data.handlers) {
+      return;
+    }
+    if (Array.isArray(type)) {
+      return _handleMultipleEvents(off, elem, type, fn);
+    }
+
+    // Utility function
+    const removeType = function (el, t) {
+      data.handlers[t] = [];
+      _cleanUpEvents(el, t);
+    };
+
+    // Are we removing all bound events?
+    if (type === undefined) {
+      for (const t in data.handlers) {
+        if (Object.prototype.hasOwnProperty.call(data.handlers || {}, t)) {
+          removeType(elem, t);
+        }
+      }
+      return;
+    }
+    const handlers = data.handlers[type];
+
+    // If no handlers exist, nothing to unbind
+    if (!handlers) {
+      return;
+    }
+
+    // If no listener was provided, remove all listeners for type
+    if (!fn) {
+      removeType(elem, type);
+      return;
+    }
+
+    // We're only removing a single handler
+    if (fn.guid) {
+      for (let n = 0; n < handlers.length; n++) {
+        if (handlers[n].guid === fn.guid) {
+          handlers.splice(n--, 1);
+        }
+      }
+    }
+    _cleanUpEvents(elem, type);
+  }
+
+  /**
+   * Trigger an event for an element
+   *
+   * @param {Element|Object} elem
+   *        Element to trigger an event on
+   *
+   * @param {EventTarget~Event|string} event
+   *        A string (the type) or an event object with a type attribute
+   *
+   * @param {Object} [hash]
+   *        data hash to pass along with the event
+   *
+   * @return {boolean|undefined}
+   *         Returns the opposite of `defaultPrevented` if default was
+   *         prevented. Otherwise, returns `undefined`
+   */
+  function trigger(elem, event, hash) {
+    // Fetches element data and a reference to the parent (for bubbling).
+    // Don't want to add a data object to cache for every parent,
+    // so checking hasElData first.
+    const elemData = DomData.has(elem) ? DomData.get(elem) : {};
+    const parent = elem.parentNode || elem.ownerDocument;
+    // type = event.type || event,
+    // handler;
+
+    // If an event name was passed as a string, creates an event out of it
+    if (typeof event === 'string') {
+      event = {
+        type: event,
+        target: elem
+      };
+    } else if (!event.target) {
+      event.target = elem;
+    }
+
+    // Normalizes the event properties.
+    event = fixEvent(event);
+
+    // If the passed element has a dispatcher, executes the established handlers.
+    if (elemData.dispatcher) {
+      elemData.dispatcher.call(elem, event, hash);
+    }
+
+    // Unless explicitly stopped or the event does not bubble (e.g. media events)
+    // recursively calls this function to bubble the event up the DOM.
+    if (parent && !event.isPropagationStopped() && event.bubbles === true) {
+      trigger.call(null, parent, event, hash);
+
+      // If at the top of the DOM, triggers the default action unless disabled.
+    } else if (!parent && !event.defaultPrevented && event.target && event.target[event.type]) {
+      if (!DomData.has(event.target)) {
+        DomData.set(event.target, {});
+      }
+      const targetData = DomData.get(event.target);
+
+      // Checks if the target has a default action for this event.
+      if (event.target[event.type]) {
+        // Temporarily disables event dispatching on the target as we have already executed the handler.
+        targetData.disabled = true;
+        // Executes the default action.
+        if (typeof event.target[event.type] === 'function') {
+          event.target[event.type]();
+        }
+        // Re-enables event dispatching.
+        targetData.disabled = false;
+      }
+    }
+
+    // Inform the triggerer if the default was prevented by returning false
+    return !event.defaultPrevented;
+  }
+
+  /**
+   * Trigger a listener only once for an event.
+   *
+   * @param {Element|Object} elem
+   *        Element or object to bind to.
+   *
+   * @param {string|string[]} type
+   *        Name/type of event
+   *
+   * @param {Event~EventListener} fn
+   *        Event listener function
+   */
+  function one(elem, type, fn) {
+    if (Array.isArray(type)) {
+      return _handleMultipleEvents(one, elem, type, fn);
+    }
+    const func = function () {
+      off(elem, type, func);
+      fn.apply(this, arguments);
+    };
+
+    // copy the guid to the new function so it can removed using the original function's ID
+    func.guid = fn.guid = fn.guid || newGUID();
+    on(elem, type, func);
+  }
+
+  /**
+   * Trigger a listener only once and then turn if off for all
+   * configured events
+   *
+   * @param {Element|Object} elem
+   *        Element or object to bind to.
+   *
+   * @param {string|string[]} type
+   *        Name/type of event
+   *
+   * @param {Event~EventListener} fn
+   *        Event listener function
+   */
+  function any(elem, type, fn) {
+    const func = function () {
+      off(elem, type, func);
+      fn.apply(this, arguments);
+    };
+
+    // copy the guid to the new function so it can removed using the original function's ID
+    func.guid = fn.guid = fn.guid || newGUID();
+
+    // multiple ons, but one off for everything
+    on(elem, type, func);
+  }
+
+  var Events = /*#__PURE__*/Object.freeze({
+    __proto__: null,
+    fixEvent: fixEvent,
+    on: on,
+    off: off,
+    trigger: trigger,
+    one: one,
+    any: any
+  });
+
+  /**
+   * @file fn.js
+   * @module fn
+   */
+  const UPDATE_REFRESH_INTERVAL = 30;
+
+  /**
+   * A private, internal-only function for changing the context of a function.
+   *
+   * It also stores a unique id on the function so it can be easily removed from
+   * events.
+   *
+   * @private
+   * @function
+   * @param    {*} context
+   *           The object to bind as scope.
+   *
+   * @param    {Function} fn
+   *           The function to be bound to a scope.
+   *
+   * @param    {number} [uid]
+   *           An optional unique ID for the function to be set
+   *
+   * @return   {Function}
+   *           The new function that will be bound into the context given
+   */
+  const bind_ = function (context, fn, uid) {
+    // Make sure the function has a unique ID
+    if (!fn.guid) {
+      fn.guid = newGUID();
+    }
+
+    // Create the new function that changes the context
+    const bound = fn.bind(context);
+
+    // Allow for the ability to individualize this function
+    // Needed in the case where multiple objects might share the same prototype
+    // IF both items add an event listener with the same function, then you try to remove just one
+    // it will remove both because they both have the same guid.
+    // when using this, you need to use the bind method when you remove the listener as well.
+    // currently used in text tracks
+    bound.guid = uid ? uid + '_' + fn.guid : fn.guid;
+    return bound;
+  };
+
+  /**
+   * Wraps the given function, `fn`, with a new function that only invokes `fn`
+   * at most once per every `wait` milliseconds.
+   *
+   * @function
+   * @param    {Function} fn
+   *           The function to be throttled.
+   *
+   * @param    {number}   wait
+   *           The number of milliseconds by which to throttle.
+   *
+   * @return   {Function}
+   */
+  const throttle = function (fn, wait) {
+    let last = window.performance.now();
+    const throttled = function (...args) {
+      const now = window.performance.now();
+      if (now - last >= wait) {
+        fn(...args);
+        last = now;
+      }
+    };
+    return throttled;
+  };
+
+  /**
+   * Creates a debounced function that delays invoking `func` until after `wait`
+   * milliseconds have elapsed since the last time the debounced function was
+   * invoked.
+   *
+   * Inspired by lodash and underscore implementations.
+   *
+   * @function
+   * @param    {Function} func
+   *           The function to wrap with debounce behavior.
+   *
+   * @param    {number} wait
+   *           The number of milliseconds to wait after the last invocation.
+   *
+   * @param    {boolean} [immediate]
+   *           Whether or not to invoke the function immediately upon creation.
+   *
+   * @param    {Object} [context=window]
+   *           The "context" in which the debounced function should debounce. For
+   *           example, if this function should be tied to a Video.js player,
+   *           the player can be passed here. Alternatively, defaults to the
+   *           global `window` object.
+   *
+   * @return   {Function}
+   *           A debounced function.
+   */
+  const debounce = function (func, wait, immediate, context = window) {
+    let timeout;
+    const cancel = () => {
+      context.clearTimeout(timeout);
+      timeout = null;
+    };
+
+    /* eslint-disable consistent-this */
+    const debounced = function () {
+      const self = this;
+      const args = arguments;
+      let later = function () {
+        timeout = null;
+        later = null;
+        if (!immediate) {
+          func.apply(self, args);
+        }
+      };
+      if (!timeout && immediate) {
+        func.apply(self, args);
+      }
+      context.clearTimeout(timeout);
+      timeout = context.setTimeout(later, wait);
+    };
+    /* eslint-enable consistent-this */
+
+    debounced.cancel = cancel;
+    return debounced;
+  };
+
+  var Fn = /*#__PURE__*/Object.freeze({
+    __proto__: null,
+    UPDATE_REFRESH_INTERVAL: UPDATE_REFRESH_INTERVAL,
+    bind_: bind_,
+    throttle: throttle,
+    debounce: debounce
+  });
+
+  /**
+   * @file src/js/event-target.js
+   */
+  let EVENT_MAP;
+
+  /**
+   * `EventTarget` is a class that can have the same API as the DOM `EventTarget`. It
+   * adds shorthand functions that wrap around lengthy functions. For example:
+   * the `on` function is a wrapper around `addEventListener`.
+   *
+   * @see [EventTarget Spec]{@link https://www.w3.org/TR/DOM-Level-2-Events/events.html#Events-EventTarget}
+   * @class EventTarget
+   */
+  class EventTarget$2 {
+    /**
+     * Adds an `event listener` to an instance of an `EventTarget`. An `event listener` is a
+     * function that will get called when an event with a certain name gets triggered.
+     *
+     * @param {string|string[]} type
+     *        An event name or an array of event names.
+     *
+     * @param {Function} fn
+     *        The function to call with `EventTarget`s
+     */
+    on(type, fn) {
+      // Remove the addEventListener alias before calling Events.on
+      // so we don't get into an infinite type loop
+      const ael = this.addEventListener;
+      this.addEventListener = () => {};
+      on(this, type, fn);
+      this.addEventListener = ael;
+    }
+    /**
+     * Removes an `event listener` for a specific event from an instance of `EventTarget`.
+     * This makes it so that the `event listener` will no longer get called when the
+     * named event happens.
+     *
+     * @param {string|string[]} type
+     *        An event name or an array of event names.
+     *
+     * @param {Function} fn
+     *        The function to remove.
+     */
+    off(type, fn) {
+      off(this, type, fn);
+    }
+    /**
+     * This function will add an `event listener` that gets triggered only once. After the
+     * first trigger it will get removed. This is like adding an `event listener`
+     * with {@link EventTarget#on} that calls {@link EventTarget#off} on itself.
+     *
+     * @param {string|string[]} type
+     *        An event name or an array of event names.
+     *
+     * @param {Function} fn
+     *        The function to be called once for each event name.
+     */
+    one(type, fn) {
+      // Remove the addEventListener aliasing Events.on
+      // so we don't get into an infinite type loop
+      const ael = this.addEventListener;
+      this.addEventListener = () => {};
+      one(this, type, fn);
+      this.addEventListener = ael;
+    }
+    /**
+     * This function will add an `event listener` that gets triggered only once and is
+     * removed from all events. This is like adding an array of `event listener`s
+     * with {@link EventTarget#on} that calls {@link EventTarget#off} on all events the
+     * first time it is triggered.
+     *
+     * @param {string|string[]} type
+     *        An event name or an array of event names.
+     *
+     * @param {Function} fn
+     *        The function to be called once for each event name.
+     */
+    any(type, fn) {
+      // Remove the addEventListener aliasing Events.on
+      // so we don't get into an infinite type loop
+      const ael = this.addEventListener;
+      this.addEventListener = () => {};
+      any(this, type, fn);
+      this.addEventListener = ael;
+    }
+    /**
+     * This function causes an event to happen. This will then cause any `event listeners`
+     * that are waiting for that event, to get called. If there are no `event listeners`
+     * for an event then nothing will happen.
+     *
+     * If the name of the `Event` that is being triggered is in `EventTarget.allowedEvents_`.
+     * Trigger will also call the `on` + `uppercaseEventName` function.
+     *
+     * Example:
+     * 'click' is in `EventTarget.allowedEvents_`, so, trigger will attempt to call
+     * `onClick` if it exists.
+     *
+     * @param {string|EventTarget~Event|Object} event
+     *        The name of the event, an `Event`, or an object with a key of type set to
+     *        an event name.
+     */
+    trigger(event) {
+      const type = event.type || event;
+
+      // deprecation
+      // In a future version we should default target to `this`
+      // similar to how we default the target to `elem` in
+      // `Events.trigger`. Right now the default `target` will be
+      // `document` due to the `Event.fixEvent` call.
+      if (typeof event === 'string') {
+        event = {
+          type
+        };
+      }
+      event = fixEvent(event);
+      if (this.allowedEvents_[type] && this['on' + type]) {
+        this['on' + type](event);
+      }
+      trigger(this, event);
+    }
+    queueTrigger(event) {
+      // only set up EVENT_MAP if it'll be used
+      if (!EVENT_MAP) {
+        EVENT_MAP = new Map();
+      }
+      const type = event.type || event;
+      let map = EVENT_MAP.get(this);
+      if (!map) {
+        map = new Map();
+        EVENT_MAP.set(this, map);
+      }
+      const oldTimeout = map.get(type);
+      map.delete(type);
+      window.clearTimeout(oldTimeout);
+      const timeout = window.setTimeout(() => {
+        map.delete(type);
+        // if we cleared out all timeouts for the current target, delete its map
+        if (map.size === 0) {
+          map = null;
+          EVENT_MAP.delete(this);
+        }
+        this.trigger(event);
+      }, 0);
+      map.set(type, timeout);
+    }
+  }
+
+  /**
+   * A Custom DOM event.
+   *
+   * @typedef {CustomEvent} Event
+   * @see [Properties]{@link https://developer.mozilla.org/en-US/docs/Web/API/CustomEvent}
+   */
+
+  /**
+   * All event listeners should follow the following format.
+   *
+   * @callback EventListener
+   * @this {EventTarget}
+   *
+   * @param {Event} event
+   *        the event that triggered this function
+   *
+   * @param {Object} [hash]
+   *        hash of data sent during the event
+   */
+
+  /**
+   * An object containing event names as keys and booleans as values.
+   *
+   * > NOTE: If an event name is set to a true value here {@link EventTarget#trigger}
+   *         will have extra functionality. See that function for more information.
+   *
+   * @property EventTarget.prototype.allowedEvents_
+   * @protected
+   */
+  EventTarget$2.prototype.allowedEvents_ = {};
+
+  /**
+   * An alias of {@link EventTarget#on}. Allows `EventTarget` to mimic
+   * the standard DOM API.
+   *
+   * @function
+   * @see {@link EventTarget#on}
+   */
+  EventTarget$2.prototype.addEventListener = EventTarget$2.prototype.on;
+
+  /**
+   * An alias of {@link EventTarget#off}. Allows `EventTarget` to mimic
+   * the standard DOM API.
+   *
+   * @function
+   * @see {@link EventTarget#off}
+   */
+  EventTarget$2.prototype.removeEventListener = EventTarget$2.prototype.off;
+
+  /**
+   * An alias of {@link EventTarget#trigger}. Allows `EventTarget` to mimic
+   * the standard DOM API.
+   *
+   * @function
+   * @see {@link EventTarget#trigger}
+   */
+  EventTarget$2.prototype.dispatchEvent = EventTarget$2.prototype.trigger;
+
+  /**
+   * @file mixins/evented.js
+   * @module evented
+   */
+  const objName = obj => {
+    if (typeof obj.name === 'function') {
+      return obj.name();
+    }
+    if (typeof obj.name === 'string') {
+      return obj.name;
+    }
+    if (obj.name_) {
+      return obj.name_;
+    }
+    if (obj.constructor && obj.constructor.name) {
+      return obj.constructor.name;
+    }
+    return typeof obj;
+  };
+
+  /**
+   * Returns whether or not an object has had the evented mixin applied.
+   *
+   * @param  {Object} object
+   *         An object to test.
+   *
+   * @return {boolean}
+   *         Whether or not the object appears to be evented.
+   */
+  const isEvented = object => object instanceof EventTarget$2 || !!object.eventBusEl_ && ['on', 'one', 'off', 'trigger'].every(k => typeof object[k] === 'function');
+
+  /**
+   * Adds a callback to run after the evented mixin applied.
+   *
+   * @param  {Object} target
+   *         An object to Add
+   * @param  {Function} callback
+   *         The callback to run.
+   */
+  const addEventedCallback = (target, callback) => {
+    if (isEvented(target)) {
+      callback();
+    } else {
+      if (!target.eventedCallbacks) {
+        target.eventedCallbacks = [];
+      }
+      target.eventedCallbacks.push(callback);
+    }
+  };
+
+  /**
+   * Whether a value is a valid event type - non-empty string or array.
+   *
+   * @private
+   * @param  {string|Array} type
+   *         The type value to test.
+   *
+   * @return {boolean}
+   *         Whether or not the type is a valid event type.
+   */
+  const isValidEventType = type =>
+  // The regex here verifies that the `type` contains at least one non-
+  // whitespace character.
+  typeof type === 'string' && /\S/.test(type) || Array.isArray(type) && !!type.length;
+
+  /**
+   * Validates a value to determine if it is a valid event target. Throws if not.
+   *
+   * @private
+   * @throws {Error}
+   *         If the target does not appear to be a valid event target.
+   *
+   * @param  {Object} target
+   *         The object to test.
+   *
+   * @param  {Object} obj
+   *         The evented object we are validating for
+   *
+   * @param  {string} fnName
+   *         The name of the evented mixin function that called this.
+   */
+  const validateTarget = (target, obj, fnName) => {
+    if (!target || !target.nodeName && !isEvented(target)) {
+      throw new Error(`Invalid target for ${objName(obj)}#${fnName}; must be a DOM node or evented object.`);
+    }
+  };
+
+  /**
+   * Validates a value to determine if it is a valid event target. Throws if not.
+   *
+   * @private
+   * @throws {Error}
+   *         If the type does not appear to be a valid event type.
+   *
+   * @param  {string|Array} type
+   *         The type to test.
+   *
+   * @param  {Object} obj
+  *         The evented object we are validating for
+   *
+   * @param  {string} fnName
+   *         The name of the evented mixin function that called this.
+   */
+  const validateEventType = (type, obj, fnName) => {
+    if (!isValidEventType(type)) {
+      throw new Error(`Invalid event type for ${objName(obj)}#${fnName}; must be a non-empty string or array.`);
+    }
+  };
+
+  /**
+   * Validates a value to determine if it is a valid listener. Throws if not.
+   *
+   * @private
+   * @throws {Error}
+   *         If the listener is not a function.
+   *
+   * @param  {Function} listener
+   *         The listener to test.
+   *
+   * @param  {Object} obj
+   *         The evented object we are validating for
+   *
+   * @param  {string} fnName
+   *         The name of the evented mixin function that called this.
+   */
+  const validateListener = (listener, obj, fnName) => {
+    if (typeof listener !== 'function') {
+      throw new Error(`Invalid listener for ${objName(obj)}#${fnName}; must be a function.`);
+    }
+  };
+
+  /**
+   * Takes an array of arguments given to `on()` or `one()`, validates them, and
+   * normalizes them into an object.
+   *
+   * @private
+   * @param  {Object} self
+   *         The evented object on which `on()` or `one()` was called. This
+   *         object will be bound as the `this` value for the listener.
+   *
+   * @param  {Array} args
+   *         An array of arguments passed to `on()` or `one()`.
+   *
+   * @param  {string} fnName
+   *         The name of the evented mixin function that called this.
+   *
+   * @return {Object}
+   *         An object containing useful values for `on()` or `one()` calls.
+   */
+  const normalizeListenArgs = (self, args, fnName) => {
+    // If the number of arguments is less than 3, the target is always the
+    // evented object itself.
+    const isTargetingSelf = args.length < 3 || args[0] === self || args[0] === self.eventBusEl_;
+    let target;
+    let type;
+    let listener;
+    if (isTargetingSelf) {
+      target = self.eventBusEl_;
+
+      // Deal with cases where we got 3 arguments, but we are still listening to
+      // the evented object itself.
+      if (args.length >= 3) {
+        args.shift();
+      }
+      [type, listener] = args;
+    } else {
+      [target, type, listener] = args;
+    }
+    validateTarget(target, self, fnName);
+    validateEventType(type, self, fnName);
+    validateListener(listener, self, fnName);
+    listener = bind_(self, listener);
+    return {
+      isTargetingSelf,
+      target,
+      type,
+      listener
+    };
+  };
+
+  /**
+   * Adds the listener to the event type(s) on the target, normalizing for
+   * the type of target.
+   *
+   * @private
+   * @param  {Element|Object} target
+   *         A DOM node or evented object.
+   *
+   * @param  {string} method
+   *         The event binding method to use ("on" or "one").
+   *
+   * @param  {string|Array} type
+   *         One or more event type(s).
+   *
+   * @param  {Function} listener
+   *         A listener function.
+   */
+  const listen = (target, method, type, listener) => {
+    validateTarget(target, target, method);
+    if (target.nodeName) {
+      Events[method](target, type, listener);
+    } else {
+      target[method](type, listener);
+    }
+  };
+
+  /**
+   * Contains methods that provide event capabilities to an object which is passed
+   * to {@link module:evented|evented}.
+   *
+   * @mixin EventedMixin
+   */
+  const EventedMixin = {
+    /**
+     * Add a listener to an event (or events) on this object or another evented
+     * object.
+     *
+     * @param  {string|Array|Element|Object} targetOrType
+     *         If this is a string or array, it represents the event type(s)
+     *         that will trigger the listener.
+     *
+     *         Another evented object can be passed here instead, which will
+     *         cause the listener to listen for events on _that_ object.
+     *
+     *         In either case, the listener's `this` value will be bound to
+     *         this object.
+     *
+     * @param  {string|Array|Function} typeOrListener
+     *         If the first argument was a string or array, this should be the
+     *         listener function. Otherwise, this is a string or array of event
+     *         type(s).
+     *
+     * @param  {Function} [listener]
+     *         If the first argument was another evented object, this will be
+     *         the listener function.
+     */
+    on(...args) {
+      const {
+        isTargetingSelf,
+        target,
+        type,
+        listener
+      } = normalizeListenArgs(this, args, 'on');
+      listen(target, 'on', type, listener);
+
+      // If this object is listening to another evented object.
+      if (!isTargetingSelf) {
+        // If this object is disposed, remove the listener.
+        const removeListenerOnDispose = () => this.off(target, type, listener);
+
+        // Use the same function ID as the listener so we can remove it later it
+        // using the ID of the original listener.
+        removeListenerOnDispose.guid = listener.guid;
+
+        // Add a listener to the target's dispose event as well. This ensures
+        // that if the target is disposed BEFORE this object, we remove the
+        // removal listener that was just added. Otherwise, we create a memory leak.
+        const removeRemoverOnTargetDispose = () => this.off('dispose', removeListenerOnDispose);
+
+        // Use the same function ID as the listener so we can remove it later
+        // it using the ID of the original listener.
+        removeRemoverOnTargetDispose.guid = listener.guid;
+        listen(this, 'on', 'dispose', removeListenerOnDispose);
+        listen(target, 'on', 'dispose', removeRemoverOnTargetDispose);
+      }
+    },
+    /**
+     * Add a listener to an event (or events) on this object or another evented
+     * object. The listener will be called once per event and then removed.
+     *
+     * @param  {string|Array|Element|Object} targetOrType
+     *         If this is a string or array, it represents the event type(s)
+     *         that will trigger the listener.
+     *
+     *         Another evented object can be passed here instead, which will
+     *         cause the listener to listen for events on _that_ object.
+     *
+     *         In either case, the listener's `this` value will be bound to
+     *         this object.
+     *
+     * @param  {string|Array|Function} typeOrListener
+     *         If the first argument was a string or array, this should be the
+     *         listener function. Otherwise, this is a string or array of event
+     *         type(s).
+     *
+     * @param  {Function} [listener]
+     *         If the first argument was another evented object, this will be
+     *         the listener function.
+     */
+    one(...args) {
+      const {
+        isTargetingSelf,
+        target,
+        type,
+        listener
+      } = normalizeListenArgs(this, args, 'one');
+
+      // Targeting this evented object.
+      if (isTargetingSelf) {
+        listen(target, 'one', type, listener);
+
+        // Targeting another evented object.
+      } else {
+        // TODO: This wrapper is incorrect! It should only
+        //       remove the wrapper for the event type that called it.
+        //       Instead all listeners are removed on the first trigger!
+        //       see https://github.com/videojs/video.js/issues/5962
+        const wrapper = (...largs) => {
+          this.off(target, type, wrapper);
+          listener.apply(null, largs);
+        };
+
+        // Use the same function ID as the listener so we can remove it later
+        // it using the ID of the original listener.
+        wrapper.guid = listener.guid;
+        listen(target, 'one', type, wrapper);
+      }
+    },
+    /**
+     * Add a listener to an event (or events) on this object or another evented
+     * object. The listener will only be called once for the first event that is triggered
+     * then removed.
+     *
+     * @param  {string|Array|Element|Object} targetOrType
+     *         If this is a string or array, it represents the event type(s)
+     *         that will trigger the listener.
+     *
+     *         Another evented object can be passed here instead, which will
+     *         cause the listener to listen for events on _that_ object.
+     *
+     *         In either case, the listener's `this` value will be bound to
+     *         this object.
+     *
+     * @param  {string|Array|Function} typeOrListener
+     *         If the first argument was a string or array, this should be the
+     *         listener function. Otherwise, this is a string or array of event
+     *         type(s).
+     *
+     * @param  {Function} [listener]
+     *         If the first argument was another evented object, this will be
+     *         the listener function.
+     */
+    any(...args) {
+      const {
+        isTargetingSelf,
+        target,
+        type,
+        listener
+      } = normalizeListenArgs(this, args, 'any');
+
+      // Targeting this evented object.
+      if (isTargetingSelf) {
+        listen(target, 'any', type, listener);
+
+        // Targeting another evented object.
+      } else {
+        const wrapper = (...largs) => {
+          this.off(target, type, wrapper);
+          listener.apply(null, largs);
+        };
+
+        // Use the same function ID as the listener so we can remove it later
+        // it using the ID of the original listener.
+        wrapper.guid = listener.guid;
+        listen(target, 'any', type, wrapper);
+      }
+    },
+    /**
+     * Removes listener(s) from event(s) on an evented object.
+     *
+     * @param  {string|Array|Element|Object} [targetOrType]
+     *         If this is a string or array, it represents the event type(s).
+     *
+     *         Another evented object can be passed here instead, in which case
+     *         ALL 3 arguments are _required_.
+     *
+     * @param  {string|Array|Function} [typeOrListener]
+     *         If the first argument was a string or array, this may be the
+     *         listener function. Otherwise, this is a string or array of event
+     *         type(s).
+     *
+     * @param  {Function} [listener]
+     *         If the first argument was another evented object, this will be
+     *         the listener function; otherwise, _all_ listeners bound to the
+     *         event type(s) will be removed.
+     */
+    off(targetOrType, typeOrListener, listener) {
+      // Targeting this evented object.
+      if (!targetOrType || isValidEventType(targetOrType)) {
+        off(this.eventBusEl_, targetOrType, typeOrListener);
+
+        // Targeting another evented object.
+      } else {
+        const target = targetOrType;
+        const type = typeOrListener;
+
+        // Fail fast and in a meaningful way!
+        validateTarget(target, this, 'off');
+        validateEventType(type, this, 'off');
+        validateListener(listener, this, 'off');
+
+        // Ensure there's at least a guid, even if the function hasn't been used
+        listener = bind_(this, listener);
+
+        // Remove the dispose listener on this evented object, which was given
+        // the same guid as the event listener in on().
+        this.off('dispose', listener);
+        if (target.nodeName) {
+          off(target, type, listener);
+          off(target, 'dispose', listener);
+        } else if (isEvented(target)) {
+          target.off(type, listener);
+          target.off('dispose', listener);
+        }
+      }
+    },
+    /**
+     * Fire an event on this evented object, causing its listeners to be called.
+     *
+     * @param   {string|Object} event
+     *          An event type or an object with a type property.
+     *
+     * @param   {Object} [hash]
+     *          An additional object to pass along to listeners.
+     *
+     * @return {boolean}
+     *          Whether or not the default behavior was prevented.
+     */
+    trigger(event, hash) {
+      validateTarget(this.eventBusEl_, this, 'trigger');
+      const type = event && typeof event !== 'string' ? event.type : event;
+      if (!isValidEventType(type)) {
+        throw new Error(`Invalid event type for ${objName(this)}#trigger; ` + 'must be a non-empty string or object with a type key that has a non-empty value.');
+      }
+      return trigger(this.eventBusEl_, event, hash);
+    }
+  };
+
+  /**
+   * Applies {@link module:evented~EventedMixin|EventedMixin} to a target object.
+   *
+   * @param  {Object} target
+   *         The object to which to add event methods.
+   *
+   * @param  {Object} [options={}]
+   *         Options for customizing the mixin behavior.
+   *
+   * @param  {string} [options.eventBusKey]
+   *         By default, adds a `eventBusEl_` DOM element to the target object,
+   *         which is used as an event bus. If the target object already has a
+   *         DOM element that should be used, pass its key here.
+   *
+   * @return {Object}
+   *         The target object.
+   */
+  function evented(target, options = {}) {
+    const {
+      eventBusKey
+    } = options;
+
+    // Set or create the eventBusEl_.
+    if (eventBusKey) {
+      if (!target[eventBusKey].nodeName) {
+        throw new Error(`The eventBusKey "${eventBusKey}" does not refer to an element.`);
+      }
+      target.eventBusEl_ = target[eventBusKey];
+    } else {
+      target.eventBusEl_ = createEl('span', {
+        className: 'vjs-event-bus'
+      });
+    }
+    Object.assign(target, EventedMixin);
+    if (target.eventedCallbacks) {
+      target.eventedCallbacks.forEach(callback => {
+        callback();
+      });
+    }
+
+    // When any evented object is disposed, it removes all its listeners.
+    target.on('dispose', () => {
+      target.off();
+      [target, target.el_, target.eventBusEl_].forEach(function (val) {
+        if (val && DomData.has(val)) {
+          DomData.delete(val);
+        }
+      });
+      window.setTimeout(() => {
+        target.eventBusEl_ = null;
+      }, 0);
+    });
+    return target;
+  }
+
+  /**
+   * @file mixins/stateful.js
+   * @module stateful
+   */
+
+  /**
+   * Contains methods that provide statefulness to an object which is passed
+   * to {@link module:stateful}.
+   *
+   * @mixin StatefulMixin
+   */
+  const StatefulMixin = {
+    /**
+     * A hash containing arbitrary keys and values representing the state of
+     * the object.
+     *
+     * @type {Object}
+     */
+    state: {},
+    /**
+     * Set the state of an object by mutating its
+     * {@link module:stateful~StatefulMixin.state|state} object in place.
+     *
+     * @fires   module:stateful~StatefulMixin#statechanged
+     * @param   {Object|Function} stateUpdates
+     *          A new set of properties to shallow-merge into the plugin state.
+     *          Can be a plain object or a function returning a plain object.
+     *
+     * @return {Object|undefined}
+     *          An object containing changes that occurred. If no changes
+     *          occurred, returns `undefined`.
+     */
+    setState(stateUpdates) {
+      // Support providing the `stateUpdates` state as a function.
+      if (typeof stateUpdates === 'function') {
+        stateUpdates = stateUpdates();
+      }
+      let changes;
+      each(stateUpdates, (value, key) => {
+        // Record the change if the value is different from what's in the
+        // current state.
+        if (this.state[key] !== value) {
+          changes = changes || {};
+          changes[key] = {
+            from: this.state[key],
+            to: value
+          };
+        }
+        this.state[key] = value;
+      });
+
+      // Only trigger "statechange" if there were changes AND we have a trigger
+      // function. This allows us to not require that the target object be an
+      // evented object.
+      if (changes && isEvented(this)) {
+        /**
+         * An event triggered on an object that is both
+         * {@link module:stateful|stateful} and {@link module:evented|evented}
+         * indicating that its state has changed.
+         *
+         * @event    module:stateful~StatefulMixin#statechanged
+         * @type     {Object}
+         * @property {Object} changes
+         *           A hash containing the properties that were changed and
+         *           the values they were changed `from` and `to`.
+         */
+        this.trigger({
+          changes,
+          type: 'statechanged'
+        });
+      }
+      return changes;
+    }
+  };
+
+  /**
+   * Applies {@link module:stateful~StatefulMixin|StatefulMixin} to a target
+   * object.
+   *
+   * If the target object is {@link module:evented|evented} and has a
+   * `handleStateChanged` method, that method will be automatically bound to the
+   * `statechanged` event on itself.
+   *
+   * @param   {Object} target
+   *          The object to be made stateful.
+   *
+   * @param   {Object} [defaultState]
+   *          A default set of properties to populate the newly-stateful object's
+   *          `state` property.
+   *
+   * @return {Object}
+   *          Returns the `target`.
+   */
+  function stateful(target, defaultState) {
+    Object.assign(target, StatefulMixin);
+
+    // This happens after the mixing-in because we need to replace the `state`
+    // added in that step.
+    target.state = Object.assign({}, target.state, defaultState);
+
+    // Auto-bind the `handleStateChanged` method of the target object if it exists.
+    if (typeof target.handleStateChanged === 'function' && isEvented(target)) {
+      target.on('statechanged', target.handleStateChanged);
+    }
+    return target;
+  }
+
+  /**
+   * @file str.js
+   * @module to-lower-case
+   */
+
+  /**
+   * Lowercase the first letter of a string.
+   *
+   * @param {string} string
+   *        String to be lowercased
+   *
+   * @return {string}
+   *         The string with a lowercased first letter
+   */
+  const toLowerCase = function (string) {
+    if (typeof string !== 'string') {
+      return string;
+    }
+    return string.replace(/./, w => w.toLowerCase());
+  };
+
+  /**
+   * Uppercase the first letter of a string.
+   *
+   * @param {string} string
+   *        String to be uppercased
+   *
+   * @return {string}
+   *         The string with an uppercased first letter
+   */
+  const toTitleCase$1 = function (string) {
+    if (typeof string !== 'string') {
+      return string;
+    }
+    return string.replace(/./, w => w.toUpperCase());
+  };
+
+  /**
+   * Compares the TitleCase versions of the two strings for equality.
+   *
+   * @param {string} str1
+   *        The first string to compare
+   *
+   * @param {string} str2
+   *        The second string to compare
+   *
+   * @return {boolean}
+   *         Whether the TitleCase versions of the strings are equal
+   */
+  const titleCaseEquals = function (str1, str2) {
+    return toTitleCase$1(str1) === toTitleCase$1(str2);
+  };
+
+  var Str = /*#__PURE__*/Object.freeze({
+    __proto__: null,
+    toLowerCase: toLowerCase,
+    toTitleCase: toTitleCase$1,
+    titleCaseEquals: titleCaseEquals
+  });
+
+  var commonjsGlobal = typeof globalThis !== 'undefined' ? globalThis : typeof window !== 'undefined' ? window : typeof global !== 'undefined' ? global : typeof self !== 'undefined' ? self : {};
+
+  function unwrapExports (x) {
+  	return x && x.__esModule && Object.prototype.hasOwnProperty.call(x, 'default') ? x['default'] : x;
+  }
+
+  function createCommonjsModule(fn, module) {
+  	return module = { exports: {} }, fn(module, module.exports), module.exports;
+  }
+
+  var keycode = createCommonjsModule(function (module, exports) {
+    // Source: http://jsfiddle.net/vWx8V/
+    // http://stackoverflow.com/questions/5603195/full-list-of-javascript-keycodes
+
+    /**
+     * Conenience method returns corresponding value for given keyName or keyCode.
+     *
+     * @param {Mixed} keyCode {Number} or keyName {String}
+     * @return {Mixed}
+     * @api public
+     */
+
+    function keyCode(searchInput) {
+      // Keyboard Events
+      if (searchInput && 'object' === typeof searchInput) {
+        var hasKeyCode = searchInput.which || searchInput.keyCode || searchInput.charCode;
+        if (hasKeyCode) searchInput = hasKeyCode;
+      }
+
+      // Numbers
+      if ('number' === typeof searchInput) return names[searchInput];
+
+      // Everything else (cast to string)
+      var search = String(searchInput);
+
+      // check codes
+      var foundNamedKey = codes[search.toLowerCase()];
+      if (foundNamedKey) return foundNamedKey;
+
+      // check aliases
+      var foundNamedKey = aliases[search.toLowerCase()];
+      if (foundNamedKey) return foundNamedKey;
+
+      // weird character?
+      if (search.length === 1) return search.charCodeAt(0);
+      return undefined;
+    }
+
+    /**
+     * Compares a keyboard event with a given keyCode or keyName.
+     *
+     * @param {Event} event Keyboard event that should be tested
+     * @param {Mixed} keyCode {Number} or keyName {String}
+     * @return {Boolean}
+     * @api public
+     */
+    keyCode.isEventKey = function isEventKey(event, nameOrCode) {
+      if (event && 'object' === typeof event) {
+        var keyCode = event.which || event.keyCode || event.charCode;
+        if (keyCode === null || keyCode === undefined) {
+          return false;
+        }
+        if (typeof nameOrCode === 'string') {
+          // check codes
+          var foundNamedKey = codes[nameOrCode.toLowerCase()];
+          if (foundNamedKey) {
+            return foundNamedKey === keyCode;
+          }
+
+          // check aliases
+          var foundNamedKey = aliases[nameOrCode.toLowerCase()];
+          if (foundNamedKey) {
+            return foundNamedKey === keyCode;
+          }
+        } else if (typeof nameOrCode === 'number') {
+          return nameOrCode === keyCode;
+        }
+        return false;
+      }
+    };
+    exports = module.exports = keyCode;
+
+    /**
+     * Get by name
+     *
+     *   exports.code['enter'] // => 13
+     */
+
+    var codes = exports.code = exports.codes = {
+      'backspace': 8,
+      'tab': 9,
+      'enter': 13,
+      'shift': 16,
+      'ctrl': 17,
+      'alt': 18,
+      'pause/break': 19,
+      'caps lock': 20,
+      'esc': 27,
+      'space': 32,
+      'page up': 33,
+      'page down': 34,
+      'end': 35,
+      'home': 36,
+      'left': 37,
+      'up': 38,
+      'right': 39,
+      'down': 40,
+      'insert': 45,
+      'delete': 46,
+      'command': 91,
+      'left command': 91,
+      'right command': 93,
+      'numpad *': 106,
+      'numpad +': 107,
+      'numpad -': 109,
+      'numpad .': 110,
+      'numpad /': 111,
+      'num lock': 144,
+      'scroll lock': 145,
+      'my computer': 182,
+      'my calculator': 183,
+      ';': 186,
+      '=': 187,
+      ',': 188,
+      '-': 189,
+      '.': 190,
+      '/': 191,
+      '`': 192,
+      '[': 219,
+      '\\': 220,
+      ']': 221,
+      "'": 222
+    };
+
+    // Helper aliases
+
+    var aliases = exports.aliases = {
+      'windows': 91,
+      '⇧': 16,
+      '⌥': 18,
+      '⌃': 17,
+      '⌘': 91,
+      'ctl': 17,
+      'control': 17,
+      'option': 18,
+      'pause': 19,
+      'break': 19,
+      'caps': 20,
+      'return': 13,
+      'escape': 27,
+      'spc': 32,
+      'spacebar': 32,
+      'pgup': 33,
+      'pgdn': 34,
+      'ins': 45,
+      'del': 46,
+      'cmd': 91
+    };
+
+    /*!
+     * Programatically add the following
+     */
+
+    // lower case chars
+    for (i = 97; i < 123; i++) codes[String.fromCharCode(i)] = i - 32;
+
+    // numbers
+    for (var i = 48; i < 58; i++) codes[i - 48] = i;
+
+    // function keys
+    for (i = 1; i < 13; i++) codes['f' + i] = i + 111;
+
+    // numpad keys
+    for (i = 0; i < 10; i++) codes['numpad ' + i] = i + 96;
+
+    /**
+     * Get by code
+     *
+     *   exports.name[13] // => 'Enter'
+     */
+
+    var names = exports.names = exports.title = {}; // title for backward compat
+
+    // Create reverse mapping
+    for (i in codes) names[codes[i]] = i;
+
+    // Add aliases
+    for (var alias in aliases) {
+      codes[alias] = aliases[alias];
+    }
+  });
+  keycode.code;
+  keycode.codes;
+  keycode.aliases;
+  keycode.names;
+  keycode.title;
+
+  /**
+   * Player Component - Base class for all UI objects
+   *
+   * @file component.js
+   */
+
+  /**
+   * Base class for all UI Components.
+   * Components are UI objects which represent both a javascript object and an element
+   * in the DOM. They can be children of other components, and can have
+   * children themselves.
+   *
+   * Components can also use methods from {@link EventTarget}
+   */
+  class Component$1 {
+    /**
+     * A callback that is called when a component is ready. Does not have any
+     * parameters and any callback value will be ignored.
+     *
+     * @callback ReadyCallback
+     * @this Component
+     */
+
+    /**
+     * Creates an instance of this class.
+     *
+     * @param { import('./player').default } player
+     *        The `Player` that this class should be attached to.
+     *
+     * @param {Object} [options]
+     *        The key/value store of component options.
+     *
+     * @param {Object[]} [options.children]
+     *        An array of children objects to initialize this component with. Children objects have
+     *        a name property that will be used if more than one component of the same type needs to be
+     *        added.
+     *
+     * @param  {string} [options.className]
+     *         A class or space separated list of classes to add the component
+     *
+     * @param {ReadyCallback} [ready]
+     *        Function that gets called when the `Component` is ready.
+     */
+    constructor(player, options, ready) {
+      // The component might be the player itself and we can't pass `this` to super
+      if (!player && this.play) {
+        this.player_ = player = this; // eslint-disable-line
+      } else {
+        this.player_ = player;
+      }
+      this.isDisposed_ = false;
+
+      // Hold the reference to the parent component via `addChild` method
+      this.parentComponent_ = null;
+
+      // Make a copy of prototype.options_ to protect against overriding defaults
+      this.options_ = merge$2({}, this.options_);
+
+      // Updated options with supplied options
+      options = this.options_ = merge$2(this.options_, options);
+
+      // Get ID from options or options element if one is supplied
+      this.id_ = options.id || options.el && options.el.id;
+
+      // If there was no ID from the options, generate one
+      if (!this.id_) {
+        // Don't require the player ID function in the case of mock players
+        const id = player && player.id && player.id() || 'no_player';
+        this.id_ = `${id}_component_${newGUID()}`;
+      }
+      this.name_ = options.name || null;
+
+      // Create element if one wasn't provided in options
+      if (options.el) {
+        this.el_ = options.el;
+      } else if (options.createEl !== false) {
+        this.el_ = this.createEl();
+      }
+      if (options.className && this.el_) {
+        options.className.split(' ').forEach(c => this.addClass(c));
+      }
+
+      // Remove the placeholder event methods. If the component is evented, the
+      // real methods are added next
+      ['on', 'off', 'one', 'any', 'trigger'].forEach(fn => {
+        this[fn] = undefined;
+      });
+
+      // if evented is anything except false, we want to mixin in evented
+      if (options.evented !== false) {
+        // Make this an evented object and use `el_`, if available, as its event bus
+        evented(this, {
+          eventBusKey: this.el_ ? 'el_' : null
+        });
+        this.handleLanguagechange = this.handleLanguagechange.bind(this);
+        this.on(this.player_, 'languagechange', this.handleLanguagechange);
+      }
+      stateful(this, this.constructor.defaultState);
+      this.children_ = [];
+      this.childIndex_ = {};
+      this.childNameIndex_ = {};
+      this.setTimeoutIds_ = new Set();
+      this.setIntervalIds_ = new Set();
+      this.rafIds_ = new Set();
+      this.namedRafs_ = new Map();
+      this.clearingTimersOnDispose_ = false;
+
+      // Add any child components in options
+      if (options.initChildren !== false) {
+        this.initChildren();
+      }
+
+      // Don't want to trigger ready here or it will go before init is actually
+      // finished for all children that run this constructor
+      this.ready(ready);
+      if (options.reportTouchActivity !== false) {
+        this.enableTouchActivity();
+      }
+    }
+
+    // `on`, `off`, `one`, `any` and `trigger` are here so tsc includes them in definitions.
+    // They are replaced or removed in the constructor
+
+    /**
+     * Adds an `event listener` to an instance of an `EventTarget`. An `event listener` is a
+     * function that will get called when an event with a certain name gets triggered.
+     *
+     * @param {string|string[]} type
+     *        An event name or an array of event names.
+     *
+     * @param {Function} fn
+     *        The function to call with `EventTarget`s
+     */
+    on(type, fn) {}
+
+    /**
+     * Removes an `event listener` for a specific event from an instance of `EventTarget`.
+     * This makes it so that the `event listener` will no longer get called when the
+     * named event happens.
+     *
+     * @param {string|string[]} type
+     *        An event name or an array of event names.
+     *
+     * @param {Function} [fn]
+     *        The function to remove. If not specified, all listeners managed by Video.js will be removed.
+     */
+    off(type, fn) {}
+
+    /**
+     * This function will add an `event listener` that gets triggered only once. After the
+     * first trigger it will get removed. This is like adding an `event listener`
+     * with {@link EventTarget#on} that calls {@link EventTarget#off} on itself.
+     *
+     * @param {string|string[]} type
+     *        An event name or an array of event names.
+     *
+     * @param {Function} fn
+     *        The function to be called once for each event name.
+     */
+    one(type, fn) {}
+
+    /**
+     * This function will add an `event listener` that gets triggered only once and is
+     * removed from all events. This is like adding an array of `event listener`s
+     * with {@link EventTarget#on} that calls {@link EventTarget#off} on all events the
+     * first time it is triggered.
+     *
+     * @param {string|string[]} type
+     *        An event name or an array of event names.
+     *
+     * @param {Function} fn
+     *        The function to be called once for each event name.
+     */
+    any(type, fn) {}
+
+    /**
+     * This function causes an event to happen. This will then cause any `event listeners`
+     * that are waiting for that event, to get called. If there are no `event listeners`
+     * for an event then nothing will happen.
+     *
+     * If the name of the `Event` that is being triggered is in `EventTarget.allowedEvents_`.
+     * Trigger will also call the `on` + `uppercaseEventName` function.
+     *
+     * Example:
+     * 'click' is in `EventTarget.allowedEvents_`, so, trigger will attempt to call
+     * `onClick` if it exists.
+     *
+     * @param {string|Event|Object} event
+     *        The name of the event, an `Event`, or an object with a key of type set to
+     *        an event name.
+     *
+     * @param {Object} [hash]
+     *        Optionally extra argument to pass through to an event listener
+     */
+    trigger(event, hash) {}
+
+    /**
+     * Dispose of the `Component` and all child components.
+     *
+     * @fires Component#dispose
+     *
+     * @param {Object} options
+     * @param {Element} options.originalEl element with which to replace player element
+     */
+    dispose(options = {}) {
+      // Bail out if the component has already been disposed.
+      if (this.isDisposed_) {
+        return;
+      }
+      if (this.readyQueue_) {
+        this.readyQueue_.length = 0;
+      }
+
+      /**
+       * Triggered when a `Component` is disposed.
+       *
+       * @event Component#dispose
+       * @type {Event}
+       *
+       * @property {boolean} [bubbles=false]
+       *           set to false so that the dispose event does not
+       *           bubble up
+       */
+      this.trigger({
+        type: 'dispose',
+        bubbles: false
+      });
+      this.isDisposed_ = true;
+
+      // Dispose all children.
+      if (this.children_) {
+        for (let i = this.children_.length - 1; i >= 0; i--) {
+          if (this.children_[i].dispose) {
+            this.children_[i].dispose();
+          }
+        }
+      }
+
+      // Delete child references
+      this.children_ = null;
+      this.childIndex_ = null;
+      this.childNameIndex_ = null;
+      this.parentComponent_ = null;
+      if (this.el_) {
+        // Remove element from DOM
+        if (this.el_.parentNode) {
+          if (options.restoreEl) {
+            this.el_.parentNode.replaceChild(options.restoreEl, this.el_);
+          } else {
+            this.el_.parentNode.removeChild(this.el_);
+          }
+        }
+        this.el_ = null;
+      }
+
+      // remove reference to the player after disposing of the element
+      this.player_ = null;
+    }
+
+    /**
+     * Determine whether or not this component has been disposed.
+     *
+     * @return {boolean}
+     *         If the component has been disposed, will be `true`. Otherwise, `false`.
+     */
+    isDisposed() {
+      return Boolean(this.isDisposed_);
+    }
+
+    /**
+     * Return the {@link Player} that the `Component` has attached to.
+     *
+     * @return { import('./player').default }
+     *         The player that this `Component` has attached to.
+     */
+    player() {
+      return this.player_;
+    }
+
+    /**
+     * Deep merge of options objects with new options.
+     * > Note: When both `obj` and `options` contain properties whose values are objects.
+     *         The two properties get merged using {@link module:obj.merge}
+     *
+     * @param {Object} obj
+     *        The object that contains new options.
+     *
+     * @return {Object}
+     *         A new object of `this.options_` and `obj` merged together.
+     */
+    options(obj) {
+      if (!obj) {
+        return this.options_;
+      }
+      this.options_ = merge$2(this.options_, obj);
+      return this.options_;
+    }
+
+    /**
+     * Get the `Component`s DOM element
+     *
+     * @return {Element}
+     *         The DOM element for this `Component`.
+     */
+    el() {
+      return this.el_;
+    }
+
+    /**
+     * Create the `Component`s DOM element.
+     *
+     * @param {string} [tagName]
+     *        Element's DOM node type. e.g. 'div'
+     *
+     * @param {Object} [properties]
+     *        An object of properties that should be set.
+     *
+     * @param {Object} [attributes]
+     *        An object of attributes that should be set.
+     *
+     * @return {Element}
+     *         The element that gets created.
+     */
+    createEl(tagName, properties, attributes) {
+      return createEl(tagName, properties, attributes);
+    }
+
+    /**
+     * Localize a string given the string in english.
+     *
+     * If tokens are provided, it'll try and run a simple token replacement on the provided string.
+     * The tokens it looks for look like `{1}` with the index being 1-indexed into the tokens array.
+     *
+     * If a `defaultValue` is provided, it'll use that over `string`,
+     * if a value isn't found in provided language files.
+     * This is useful if you want to have a descriptive key for token replacement
+     * but have a succinct localized string and not require `en.json` to be included.
+     *
+     * Currently, it is used for the progress bar timing.
+     * ```js
+     * {
+     *   "progress bar timing: currentTime={1} duration={2}": "{1} of {2}"
+     * }
+     * ```
+     * It is then used like so:
+     * ```js
+     * this.localize('progress bar timing: currentTime={1} duration{2}',
+     *               [this.player_.currentTime(), this.player_.duration()],
+     *               '{1} of {2}');
+     * ```
+     *
+     * Which outputs something like: `01:23 of 24:56`.
+     *
+     *
+     * @param {string} string
+     *        The string to localize and the key to lookup in the language files.
+     * @param {string[]} [tokens]
+     *        If the current item has token replacements, provide the tokens here.
+     * @param {string} [defaultValue]
+     *        Defaults to `string`. Can be a default value to use for token replacement
+     *        if the lookup key is needed to be separate.
+     *
+     * @return {string}
+     *         The localized string or if no localization exists the english string.
+     */
+    localize(string, tokens, defaultValue = string) {
+      const code = this.player_.language && this.player_.language();
+      const languages = this.player_.languages && this.player_.languages();
+      const language = languages && languages[code];
+      const primaryCode = code && code.split('-')[0];
+      const primaryLang = languages && languages[primaryCode];
+      let localizedString = defaultValue;
+      if (language && language[string]) {
+        localizedString = language[string];
+      } else if (primaryLang && primaryLang[string]) {
+        localizedString = primaryLang[string];
+      }
+      if (tokens) {
+        localizedString = localizedString.replace(/\{(\d+)\}/g, function (match, index) {
+          const value = tokens[index - 1];
+          let ret = value;
+          if (typeof value === 'undefined') {
+            ret = match;
+          }
+          return ret;
+        });
+      }
+      return localizedString;
+    }
+
+    /**
+     * Handles language change for the player in components. Should be overridden by sub-components.
+     *
+     * @abstract
+     */
+    handleLanguagechange() {}
+
+    /**
+     * Return the `Component`s DOM element. This is where children get inserted.
+     * This will usually be the the same as the element returned in {@link Component#el}.
+     *
+     * @return {Element}
+     *         The content element for this `Component`.
+     */
+    contentEl() {
+      return this.contentEl_ || this.el_;
+    }
+
+    /**
+     * Get this `Component`s ID
+     *
+     * @return {string}
+     *         The id of this `Component`
+     */
+    id() {
+      return this.id_;
+    }
+
+    /**
+     * Get the `Component`s name. The name gets used to reference the `Component`
+     * and is set during registration.
+     *
+     * @return {string}
+     *         The name of this `Component`.
+     */
+    name() {
+      return this.name_;
+    }
+
+    /**
+     * Get an array of all child components
+     *
+     * @return {Array}
+     *         The children
+     */
+    children() {
+      return this.children_;
+    }
+
+    /**
+     * Returns the child `Component` with the given `id`.
+     *
+     * @param {string} id
+     *        The id of the child `Component` to get.
+     *
+     * @return {Component|undefined}
+     *         The child `Component` with the given `id` or undefined.
+     */
+    getChildById(id) {
+      return this.childIndex_[id];
+    }
+
+    /**
+     * Returns the child `Component` with the given `name`.
+     *
+     * @param {string} name
+     *        The name of the child `Component` to get.
+     *
+     * @return {Component|undefined}
+     *         The child `Component` with the given `name` or undefined.
+     */
+    getChild(name) {
+      if (!name) {
+        return;
+      }
+      return this.childNameIndex_[name];
+    }
+
+    /**
+     * Returns the descendant `Component` following the givent
+     * descendant `names`. For instance ['foo', 'bar', 'baz'] would
+     * try to get 'foo' on the current component, 'bar' on the 'foo'
+     * component and 'baz' on the 'bar' component and return undefined
+     * if any of those don't exist.
+     *
+     * @param {...string[]|...string} names
+     *        The name of the child `Component` to get.
+     *
+     * @return {Component|undefined}
+     *         The descendant `Component` following the given descendant
+     *         `names` or undefined.
+     */
+    getDescendant(...names) {
+      // flatten array argument into the main array
+      names = names.reduce((acc, n) => acc.concat(n), []);
+      let currentChild = this;
+      for (let i = 0; i < names.length; i++) {
+        currentChild = currentChild.getChild(names[i]);
+        if (!currentChild || !currentChild.getChild) {
+          return;
+        }
+      }
+      return currentChild;
+    }
+
+    /**
+     * Adds an SVG icon element to another element or component.
+     *
+     * @param {string} iconName
+     *        The name of icon. A list of all the icon names can be found at 'sandbox/svg-icons.html'
+     *
+     * @param {Element} [el=this.el()]
+     *        Element to set the title on. Defaults to the current Component's element.
+     *
+     * @return {Element}
+     *        The newly created icon element.
+     */
+    setIcon(iconName, el = this.el()) {
+      // TODO: In v9 of video.js, we will want to remove font icons entirely.
+      // This means this check, as well as the others throughout the code, and
+      // the unecessary CSS for font icons, will need to be removed.
+      // See https://github.com/videojs/video.js/pull/8260 as to which components
+      // need updating.
+      if (!this.player_.options_.experimentalSvgIcons) {
+        return;
+      }
+      const xmlnsURL = 'http://www.w3.org/2000/svg';
+
+      // The below creates an element in the format of:
+      // <span><svg><use>....</use></svg></span>
+      const iconContainer = createEl('span', {
+        className: 'vjs-icon-placeholder vjs-svg-icon'
+      }, {
+        'aria-hidden': 'true'
+      });
+      const svgEl = document.createElementNS(xmlnsURL, 'svg');
+      svgEl.setAttributeNS(null, 'viewBox', '0 0 512 512');
+      const useEl = document.createElementNS(xmlnsURL, 'use');
+      svgEl.appendChild(useEl);
+      useEl.setAttributeNS(null, 'href', `#vjs-icon-${iconName}`);
+      iconContainer.appendChild(svgEl);
+
+      // Replace a pre-existing icon if one exists.
+      if (this.iconIsSet_) {
+        el.replaceChild(iconContainer, el.querySelector('.vjs-icon-placeholder'));
+      } else {
+        el.appendChild(iconContainer);
+      }
+      this.iconIsSet_ = true;
+      return iconContainer;
+    }
+
+    /**
+     * Add a child `Component` inside the current `Component`.
+     *
+     * @param {string|Component} child
+     *        The name or instance of a child to add.
+     *
+     * @param {Object} [options={}]
+     *        The key/value store of options that will get passed to children of
+     *        the child.
+     *
+     * @param {number} [index=this.children_.length]
+     *        The index to attempt to add a child into.
+     *
+     *
+     * @return {Component}
+     *         The `Component` that gets added as a child. When using a string the
+     *         `Component` will get created by this process.
+     */
+    addChild(child, options = {}, index = this.children_.length) {
+      let component;
+      let componentName;
+
+      // If child is a string, create component with options
+      if (typeof child === 'string') {
+        componentName = toTitleCase$1(child);
+        const componentClassName = options.componentClass || componentName;
+
+        // Set name through options
+        options.name = componentName;
+
+        // Create a new object & element for this controls set
+        // If there's no .player_, this is a player
+        const ComponentClass = Component$1.getComponent(componentClassName);
+        if (!ComponentClass) {
+          throw new Error(`Component ${componentClassName} does not exist`);
+        }
+
+        // data stored directly on the videojs object may be
+        // misidentified as a component to retain
+        // backwards-compatibility with 4.x. check to make sure the
+        // component class can be instantiated.
+        if (typeof ComponentClass !== 'function') {
+          return null;
+        }
+        component = new ComponentClass(this.player_ || this, options);
+
+        // child is a component instance
+      } else {
+        component = child;
+      }
+      if (component.parentComponent_) {
+        component.parentComponent_.removeChild(component);
+      }
+      this.children_.splice(index, 0, component);
+      component.parentComponent_ = this;
+      if (typeof component.id === 'function') {
+        this.childIndex_[component.id()] = component;
+      }
+
+      // If a name wasn't used to create the component, check if we can use the
+      // name function of the component
+      componentName = componentName || component.name && toTitleCase$1(component.name());
+      if (componentName) {
+        this.childNameIndex_[componentName] = component;
+        this.childNameIndex_[toLowerCase(componentName)] = component;
+      }
+
+      // Add the UI object's element to the container div (box)
+      // Having an element is not required
+      if (typeof component.el === 'function' && component.el()) {
+        // If inserting before a component, insert before that component's element
+        let refNode = null;
+        if (this.children_[index + 1]) {
+          // Most children are components, but the video tech is an HTML element
+          if (this.children_[index + 1].el_) {
+            refNode = this.children_[index + 1].el_;
+          } else if (isEl(this.children_[index + 1])) {
+            refNode = this.children_[index + 1];
+          }
+        }
+        this.contentEl().insertBefore(component.el(), refNode);
+      }
+
+      // Return so it can stored on parent object if desired.
+      return component;
+    }
+
+    /**
+     * Remove a child `Component` from this `Component`s list of children. Also removes
+     * the child `Component`s element from this `Component`s element.
+     *
+     * @param {Component} component
+     *        The child `Component` to remove.
+     */
+    removeChild(component) {
+      if (typeof component === 'string') {
+        component = this.getChild(component);
+      }
+      if (!component || !this.children_) {
+        return;
+      }
+      let childFound = false;
+      for (let i = this.children_.length - 1; i >= 0; i--) {
+        if (this.children_[i] === component) {
+          childFound = true;
+          this.children_.splice(i, 1);
+          break;
+        }
+      }
+      if (!childFound) {
+        return;
+      }
+      component.parentComponent_ = null;
+      this.childIndex_[component.id()] = null;
+      this.childNameIndex_[toTitleCase$1(component.name())] = null;
+      this.childNameIndex_[toLowerCase(component.name())] = null;
+      const compEl = component.el();
+      if (compEl && compEl.parentNode === this.contentEl()) {
+        this.contentEl().removeChild(component.el());
+      }
+    }
+
+    /**
+     * Add and initialize default child `Component`s based upon options.
+     */
+    initChildren() {
+      const children = this.options_.children;
+      if (children) {
+        // `this` is `parent`
+        const parentOptions = this.options_;
+        const handleAdd = child => {
+          const name = child.name;
+          let opts = child.opts;
+
+          // Allow options for children to be set at the parent options
+          // e.g. videojs(id, { controlBar: false });
+          // instead of videojs(id, { children: { controlBar: false });
+          if (parentOptions[name] !== undefined) {
+            opts = parentOptions[name];
+          }
+
+          // Allow for disabling default components
+          // e.g. options['children']['posterImage'] = false
+          if (opts === false) {
+            return;
+          }
+
+          // Allow options to be passed as a simple boolean if no configuration
+          // is necessary.
+          if (opts === true) {
+            opts = {};
+          }
+
+          // We also want to pass the original player options
+          // to each component as well so they don't need to
+          // reach back into the player for options later.
+          opts.playerOptions = this.options_.playerOptions;
+
+          // Create and add the child component.
+          // Add a direct reference to the child by name on the parent instance.
+          // If two of the same component are used, different names should be supplied
+          // for each
+          const newChild = this.addChild(name, opts);
+          if (newChild) {
+            this[name] = newChild;
+          }
+        };
+
+        // Allow for an array of children details to passed in the options
+        let workingChildren;
+        const Tech = Component$1.getComponent('Tech');
+        if (Array.isArray(children)) {
+          workingChildren = children;
+        } else {
+          workingChildren = Object.keys(children);
+        }
+        workingChildren
+        // children that are in this.options_ but also in workingChildren  would
+        // give us extra children we do not want. So, we want to filter them out.
+        .concat(Object.keys(this.options_).filter(function (child) {
+          return !workingChildren.some(function (wchild) {
+            if (typeof wchild === 'string') {
+              return child === wchild;
+            }
+            return child === wchild.name;
+          });
+        })).map(child => {
+          let name;
+          let opts;
+          if (typeof child === 'string') {
+            name = child;
+            opts = children[name] || this.options_[name] || {};
+          } else {
+            name = child.name;
+            opts = child;
+          }
+          return {
+            name,
+            opts
+          };
+        }).filter(child => {
+          // we have to make sure that child.name isn't in the techOrder since
+          // techs are registered as Components but can't aren't compatible
+          // See https://github.com/videojs/video.js/issues/2772
+          const c = Component$1.getComponent(child.opts.componentClass || toTitleCase$1(child.name));
+          return c && !Tech.isTech(c);
+        }).forEach(handleAdd);
+      }
+    }
+
+    /**
+     * Builds the default DOM class name. Should be overridden by sub-components.
+     *
+     * @return {string}
+     *         The DOM class name for this object.
+     *
+     * @abstract
+     */
+    buildCSSClass() {
+      // Child classes can include a function that does:
+      // return 'CLASS NAME' + this._super();
+      return '';
+    }
+
+    /**
+     * Bind a listener to the component's ready state.
+     * Different from event listeners in that if the ready event has already happened
+     * it will trigger the function immediately.
+     *
+     * @param {ReadyCallback} fn
+     *        Function that gets called when the `Component` is ready.
+     *
+     * @return {Component}
+     *         Returns itself; method can be chained.
+     */
+    ready(fn, sync = false) {
+      if (!fn) {
+        return;
+      }
+      if (!this.isReady_) {
+        this.readyQueue_ = this.readyQueue_ || [];
+        this.readyQueue_.push(fn);
+        return;
+      }
+      if (sync) {
+        fn.call(this);
+      } else {
+        // Call the function asynchronously by default for consistency
+        this.setTimeout(fn, 1);
+      }
+    }
+
+    /**
+     * Trigger all the ready listeners for this `Component`.
+     *
+     * @fires Component#ready
+     */
+    triggerReady() {
+      this.isReady_ = true;
+
+      // Ensure ready is triggered asynchronously
+      this.setTimeout(function () {
+        const readyQueue = this.readyQueue_;
+
+        // Reset Ready Queue
+        this.readyQueue_ = [];
+        if (readyQueue && readyQueue.length > 0) {
+          readyQueue.forEach(function (fn) {
+            fn.call(this);
+          }, this);
+        }
+
+        // Allow for using event listeners also
+        /**
+         * Triggered when a `Component` is ready.
+         *
+         * @event Component#ready
+         * @type {Event}
+         */
+        this.trigger('ready');
+      }, 1);
+    }
+
+    /**
+     * Find a single DOM element matching a `selector`. This can be within the `Component`s
+     * `contentEl()` or another custom context.
+     *
+     * @param {string} selector
+     *        A valid CSS selector, which will be passed to `querySelector`.
+     *
+     * @param {Element|string} [context=this.contentEl()]
+     *        A DOM element within which to query. Can also be a selector string in
+     *        which case the first matching element will get used as context. If
+     *        missing `this.contentEl()` gets used. If  `this.contentEl()` returns
+     *        nothing it falls back to `document`.
+     *
+     * @return {Element|null}
+     *         the dom element that was found, or null
+     *
+     * @see [Information on CSS Selectors](https://developer.mozilla.org/en-US/docs/Web/Guide/CSS/Getting_Started/Selectors)
+     */
+    $(selector, context) {
+      return $(selector, context || this.contentEl());
+    }
+
+    /**
+     * Finds all DOM element matching a `selector`. This can be within the `Component`s
+     * `contentEl()` or another custom context.
+     *
+     * @param {string} selector
+     *        A valid CSS selector, which will be passed to `querySelectorAll`.
+     *
+     * @param {Element|string} [context=this.contentEl()]
+     *        A DOM element within which to query. Can also be a selector string in
+     *        which case the first matching element will get used as context. If
+     *        missing `this.contentEl()` gets used. If  `this.contentEl()` returns
+     *        nothing it falls back to `document`.
+     *
+     * @return {NodeList}
+     *         a list of dom elements that were found
+     *
+     * @see [Information on CSS Selectors](https://developer.mozilla.org/en-US/docs/Web/Guide/CSS/Getting_Started/Selectors)
+     */
+    $$(selector, context) {
+      return $$(selector, context || this.contentEl());
+    }
+
+    /**
+     * Check if a component's element has a CSS class name.
+     *
+     * @param {string} classToCheck
+     *        CSS class name to check.
+     *
+     * @return {boolean}
+     *         - True if the `Component` has the class.
+     *         - False if the `Component` does not have the class`
+     */
+    hasClass(classToCheck) {
+      return hasClass(this.el_, classToCheck);
+    }
+
+    /**
+     * Add a CSS class name to the `Component`s element.
+     *
+     * @param {...string} classesToAdd
+     *        One or more CSS class name to add.
+     */
+    addClass(...classesToAdd) {
+      addClass(this.el_, ...classesToAdd);
+    }
+
+    /**
+     * Remove a CSS class name from the `Component`s element.
+     *
+     * @param {...string} classesToRemove
+     *        One or more CSS class name to remove.
+     */
+    removeClass(...classesToRemove) {
+      removeClass(this.el_, ...classesToRemove);
+    }
+
+    /**
+     * Add or remove a CSS class name from the component's element.
+     * - `classToToggle` gets added when {@link Component#hasClass} would return false.
+     * - `classToToggle` gets removed when {@link Component#hasClass} would return true.
+     *
+     * @param  {string} classToToggle
+     *         The class to add or remove based on (@link Component#hasClass}
+     *
+     * @param  {boolean|Dom~predicate} [predicate]
+     *         An {@link Dom~predicate} function or a boolean
+     */
+    toggleClass(classToToggle, predicate) {
+      toggleClass(this.el_, classToToggle, predicate);
+    }
+
+    /**
+     * Show the `Component`s element if it is hidden by removing the
+     * 'vjs-hidden' class name from it.
+     */
+    show() {
+      this.removeClass('vjs-hidden');
+    }
+
+    /**
+     * Hide the `Component`s element if it is currently showing by adding the
+     * 'vjs-hidden` class name to it.
+     */
+    hide() {
+      this.addClass('vjs-hidden');
+    }
+
+    /**
+     * Lock a `Component`s element in its visible state by adding the 'vjs-lock-showing'
+     * class name to it. Used during fadeIn/fadeOut.
+     *
+     * @private
+     */
+    lockShowing() {
+      this.addClass('vjs-lock-showing');
+    }
+
+    /**
+     * Unlock a `Component`s element from its visible state by removing the 'vjs-lock-showing'
+     * class name from it. Used during fadeIn/fadeOut.
+     *
+     * @private
+     */
+    unlockShowing() {
+      this.removeClass('vjs-lock-showing');
+    }
+
+    /**
+     * Get the value of an attribute on the `Component`s element.
+     *
+     * @param {string} attribute
+     *        Name of the attribute to get the value from.
+     *
+     * @return {string|null}
+     *         - The value of the attribute that was asked for.
+     *         - Can be an empty string on some browsers if the attribute does not exist
+     *           or has no value
+     *         - Most browsers will return null if the attribute does not exist or has
+     *           no value.
+     *
+     * @see [DOM API]{@link https://developer.mozilla.org/en-US/docs/Web/API/Element/getAttribute}
+     */
+    getAttribute(attribute) {
+      return getAttribute(this.el_, attribute);
+    }
+
+    /**
+     * Set the value of an attribute on the `Component`'s element
+     *
+     * @param {string} attribute
+     *        Name of the attribute to set.
+     *
+     * @param {string} value
+     *        Value to set the attribute to.
+     *
+     * @see [DOM API]{@link https://developer.mozilla.org/en-US/docs/Web/API/Element/setAttribute}
+     */
+    setAttribute(attribute, value) {
+      setAttribute(this.el_, attribute, value);
+    }
+
+    /**
+     * Remove an attribute from the `Component`s element.
+     *
+     * @param {string} attribute
+     *        Name of the attribute to remove.
+     *
+     * @see [DOM API]{@link https://developer.mozilla.org/en-US/docs/Web/API/Element/removeAttribute}
+     */
+    removeAttribute(attribute) {
+      removeAttribute(this.el_, attribute);
+    }
+
+    /**
+     * Get or set the width of the component based upon the CSS styles.
+     * See {@link Component#dimension} for more detailed information.
+     *
+     * @param {number|string} [num]
+     *        The width that you want to set postfixed with '%', 'px' or nothing.
+     *
+     * @param {boolean} [skipListeners]
+     *        Skip the componentresize event trigger
+     *
+     * @return {number|undefined}
+     *         The width when getting, zero if there is no width
+     */
+    width(num, skipListeners) {
+      return this.dimension('width', num, skipListeners);
+    }
+
+    /**
+     * Get or set the height of the component based upon the CSS styles.
+     * See {@link Component#dimension} for more detailed information.
+     *
+     * @param {number|string} [num]
+     *        The height that you want to set postfixed with '%', 'px' or nothing.
+     *
+     * @param {boolean} [skipListeners]
+     *        Skip the componentresize event trigger
+     *
+     * @return {number|undefined}
+     *         The height when getting, zero if there is no height
+     */
+    height(num, skipListeners) {
+      return this.dimension('height', num, skipListeners);
+    }
+
+    /**
+     * Set both the width and height of the `Component` element at the same time.
+     *
+     * @param  {number|string} width
+     *         Width to set the `Component`s element to.
+     *
+     * @param  {number|string} height
+     *         Height to set the `Component`s element to.
+     */
+    dimensions(width, height) {
+      // Skip componentresize listeners on width for optimization
+      this.width(width, true);
+      this.height(height);
+    }
+
+    /**
+     * Get or set width or height of the `Component` element. This is the shared code
+     * for the {@link Component#width} and {@link Component#height}.
+     *
+     * Things to know:
+     * - If the width or height in an number this will return the number postfixed with 'px'.
+     * - If the width/height is a percent this will return the percent postfixed with '%'
+     * - Hidden elements have a width of 0 with `window.getComputedStyle`. This function
+     *   defaults to the `Component`s `style.width` and falls back to `window.getComputedStyle`.
+     *   See [this]{@link http://www.foliotek.com/devblog/getting-the-width-of-a-hidden-element-with-jquery-using-width/}
+     *   for more information
+     * - If you want the computed style of the component, use {@link Component#currentWidth}
+     *   and {@link {Component#currentHeight}
+     *
+     * @fires Component#componentresize
+     *
+     * @param {string} widthOrHeight
+     8        'width' or 'height'
+     *
+     * @param  {number|string} [num]
+     8         New dimension
+     *
+     * @param  {boolean} [skipListeners]
+     *         Skip componentresize event trigger
+     *
+     * @return {number|undefined}
+     *         The dimension when getting or 0 if unset
+     */
+    dimension(widthOrHeight, num, skipListeners) {
+      if (num !== undefined) {
+        // Set to zero if null or literally NaN (NaN !== NaN)
+        if (num === null || num !== num) {
+          num = 0;
+        }
+
+        // Check if using css width/height (% or px) and adjust
+        if (('' + num).indexOf('%') !== -1 || ('' + num).indexOf('px') !== -1) {
+          this.el_.style[widthOrHeight] = num;
+        } else if (num === 'auto') {
+          this.el_.style[widthOrHeight] = '';
+        } else {
+          this.el_.style[widthOrHeight] = num + 'px';
+        }
+
+        // skipListeners allows us to avoid triggering the resize event when setting both width and height
+        if (!skipListeners) {
+          /**
+           * Triggered when a component is resized.
+           *
+           * @event Component#componentresize
+           * @type {Event}
+           */
+          this.trigger('componentresize');
+        }
+        return;
+      }
+
+      // Not setting a value, so getting it
+      // Make sure element exists
+      if (!this.el_) {
+        return 0;
+      }
+
+      // Get dimension value from style
+      const val = this.el_.style[widthOrHeight];
+      const pxIndex = val.indexOf('px');
+      if (pxIndex !== -1) {
+        // Return the pixel value with no 'px'
+        return parseInt(val.slice(0, pxIndex), 10);
+      }
+
+      // No px so using % or no style was set, so falling back to offsetWidth/height
+      // If component has display:none, offset will return 0
+      // TODO: handle display:none and no dimension style using px
+      return parseInt(this.el_['offset' + toTitleCase$1(widthOrHeight)], 10);
+    }
+
+    /**
+     * Get the computed width or the height of the component's element.
+     *
+     * Uses `window.getComputedStyle`.
+     *
+     * @param {string} widthOrHeight
+     *        A string containing 'width' or 'height'. Whichever one you want to get.
+     *
+     * @return {number}
+     *         The dimension that gets asked for or 0 if nothing was set
+     *         for that dimension.
+     */
+    currentDimension(widthOrHeight) {
+      let computedWidthOrHeight = 0;
+      if (widthOrHeight !== 'width' && widthOrHeight !== 'height') {
+        throw new Error('currentDimension only accepts width or height value');
+      }
+      computedWidthOrHeight = computedStyle(this.el_, widthOrHeight);
+
+      // remove 'px' from variable and parse as integer
+      computedWidthOrHeight = parseFloat(computedWidthOrHeight);
+
+      // if the computed value is still 0, it's possible that the browser is lying
+      // and we want to check the offset values.
+      // This code also runs wherever getComputedStyle doesn't exist.
+      if (computedWidthOrHeight === 0 || isNaN(computedWidthOrHeight)) {
+        const rule = `offset${toTitleCase$1(widthOrHeight)}`;
+        computedWidthOrHeight = this.el_[rule];
+      }
+      return computedWidthOrHeight;
+    }
+
+    /**
+     * An object that contains width and height values of the `Component`s
+     * computed style. Uses `window.getComputedStyle`.
+     *
+     * @typedef {Object} Component~DimensionObject
+     *
+     * @property {number} width
+     *           The width of the `Component`s computed style.
+     *
+     * @property {number} height
+     *           The height of the `Component`s computed style.
+     */
+
+    /**
+     * Get an object that contains computed width and height values of the
+     * component's element.
+     *
+     * Uses `window.getComputedStyle`.
+     *
+     * @return {Component~DimensionObject}
+     *         The computed dimensions of the component's element.
+     */
+    currentDimensions() {
+      return {
+        width: this.currentDimension('width'),
+        height: this.currentDimension('height')
+      };
+    }
+
+    /**
+     * Get the computed width of the component's element.
+     *
+     * Uses `window.getComputedStyle`.
+     *
+     * @return {number}
+     *         The computed width of the component's element.
+     */
+    currentWidth() {
+      return this.currentDimension('width');
+    }
+
+    /**
+     * Get the computed height of the component's element.
+     *
+     * Uses `window.getComputedStyle`.
+     *
+     * @return {number}
+     *         The computed height of the component's element.
+     */
+    currentHeight() {
+      return this.currentDimension('height');
+    }
+
+    /**
+     * Set the focus to this component
+     */
+    focus() {
+      this.el_.focus();
+    }
+
+    /**
+     * Remove the focus from this component
+     */
+    blur() {
+      this.el_.blur();
+    }
+
+    /**
+     * When this Component receives a `keydown` event which it does not process,
+     *  it passes the event to the Player for handling.
+     *
+     * @param {KeyboardEvent} event
+     *        The `keydown` event that caused this function to be called.
+     */
+    handleKeyDown(event) {
+      if (this.player_) {
+        // We only stop propagation here because we want unhandled events to fall
+        // back to the browser. Exclude Tab for focus trapping.
+        if (!keycode.isEventKey(event, 'Tab')) {
+          event.stopPropagation();
+        }
+        this.player_.handleKeyDown(event);
+      }
+    }
+
+    /**
+     * Many components used to have a `handleKeyPress` method, which was poorly
+     * named because it listened to a `keydown` event. This method name now
+     * delegates to `handleKeyDown`. This means anyone calling `handleKeyPress`
+     * will not see their method calls stop working.
+     *
+     * @param {KeyboardEvent} event
+     *        The event that caused this function to be called.
+     */
+    handleKeyPress(event) {
+      this.handleKeyDown(event);
+    }
+
+    /**
+     * Emit a 'tap' events when touch event support gets detected. This gets used to
+     * support toggling the controls through a tap on the video. They get enabled
+     * because every sub-component would have extra overhead otherwise.
+     *
+     * @protected
+     * @fires Component#tap
+     * @listens Component#touchstart
+     * @listens Component#touchmove
+     * @listens Component#touchleave
+     * @listens Component#touchcancel
+     * @listens Component#touchend
+      */
+    emitTapEvents() {
+      // Track the start time so we can determine how long the touch lasted
+      let touchStart = 0;
+      let firstTouch = null;
+
+      // Maximum movement allowed during a touch event to still be considered a tap
+      // Other popular libs use anywhere from 2 (hammer.js) to 15,
+      // so 10 seems like a nice, round number.
+      const tapMovementThreshold = 10;
+
+      // The maximum length a touch can be while still being considered a tap
+      const touchTimeThreshold = 200;
+      let couldBeTap;
+      this.on('touchstart', function (event) {
+        // If more than one finger, don't consider treating this as a click
+        if (event.touches.length === 1) {
+          // Copy pageX/pageY from the object
+          firstTouch = {
+            pageX: event.touches[0].pageX,
+            pageY: event.touches[0].pageY
+          };
+          // Record start time so we can detect a tap vs. "touch and hold"
+          touchStart = window.performance.now();
+          // Reset couldBeTap tracking
+          couldBeTap = true;
+        }
+      });
+      this.on('touchmove', function (event) {
+        // If more than one finger, don't consider treating this as a click
+        if (event.touches.length > 1) {
+          couldBeTap = false;
+        } else if (firstTouch) {
+          // Some devices will throw touchmoves for all but the slightest of taps.
+          // So, if we moved only a small distance, this could still be a tap
+          const xdiff = event.touches[0].pageX - firstTouch.pageX;
+          const ydiff = event.touches[0].pageY - firstTouch.pageY;
+          const touchDistance = Math.sqrt(xdiff * xdiff + ydiff * ydiff);
+          if (touchDistance > tapMovementThreshold) {
+            couldBeTap = false;
+          }
+        }
+      });
+      const noTap = function () {
+        couldBeTap = false;
+      };
+
+      // TODO: Listen to the original target. http://youtu.be/DujfpXOKUp8?t=13m8s
+      this.on('touchleave', noTap);
+      this.on('touchcancel', noTap);
+
+      // When the touch ends, measure how long it took and trigger the appropriate
+      // event
+      this.on('touchend', function (event) {
+        firstTouch = null;
+        // Proceed only if the touchmove/leave/cancel event didn't happen
+        if (couldBeTap === true) {
+          // Measure how long the touch lasted
+          const touchTime = window.performance.now() - touchStart;
+
+          // Make sure the touch was less than the threshold to be considered a tap
+          if (touchTime < touchTimeThreshold) {
+            // Don't let browser turn this into a click
+            event.preventDefault();
+            /**
+             * Triggered when a `Component` is tapped.
+             *
+             * @event Component#tap
+             * @type {MouseEvent}
+             */
+            this.trigger('tap');
+            // It may be good to copy the touchend event object and change the
+            // type to tap, if the other event properties aren't exact after
+            // Events.fixEvent runs (e.g. event.target)
+          }
+        }
+      });
+    }
+
+    /**
+     * This function reports user activity whenever touch events happen. This can get
+     * turned off by any sub-components that wants touch events to act another way.
+     *
+     * Report user touch activity when touch events occur. User activity gets used to
+     * determine when controls should show/hide. It is simple when it comes to mouse
+     * events, because any mouse event should show the controls. So we capture mouse
+     * events that bubble up to the player and report activity when that happens.
+     * With touch events it isn't as easy as `touchstart` and `touchend` toggle player
+     * controls. So touch events can't help us at the player level either.
+     *
+     * User activity gets checked asynchronously. So what could happen is a tap event
+     * on the video turns the controls off. Then the `touchend` event bubbles up to
+     * the player. Which, if it reported user activity, would turn the controls right
+     * back on. We also don't want to completely block touch events from bubbling up.
+     * Furthermore a `touchmove` event and anything other than a tap, should not turn
+     * controls back on.
+     *
+     * @listens Component#touchstart
+     * @listens Component#touchmove
+     * @listens Component#touchend
+     * @listens Component#touchcancel
+     */
+    enableTouchActivity() {
+      // Don't continue if the root player doesn't support reporting user activity
+      if (!this.player() || !this.player().reportUserActivity) {
+        return;
+      }
+
+      // listener for reporting that the user is active
+      const report = bind_(this.player(), this.player().reportUserActivity);
+      let touchHolding;
+      this.on('touchstart', function () {
+        report();
+        // For as long as the they are touching the device or have their mouse down,
+        // we consider them active even if they're not moving their finger or mouse.
+        // So we want to continue to update that they are active
+        this.clearInterval(touchHolding);
+        // report at the same interval as activityCheck
+        touchHolding = this.setInterval(report, 250);
+      });
+      const touchEnd = function (event) {
+        report();
+        // stop the interval that maintains activity if the touch is holding
+        this.clearInterval(touchHolding);
+      };
+      this.on('touchmove', report);
+      this.on('touchend', touchEnd);
+      this.on('touchcancel', touchEnd);
+    }
+
+    /**
+     * A callback that has no parameters and is bound into `Component`s context.
+     *
+     * @callback Component~GenericCallback
+     * @this Component
+     */
+
+    /**
+     * Creates a function that runs after an `x` millisecond timeout. This function is a
+     * wrapper around `window.setTimeout`. There are a few reasons to use this one
+     * instead though:
+     * 1. It gets cleared via  {@link Component#clearTimeout} when
+     *    {@link Component#dispose} gets called.
+     * 2. The function callback will gets turned into a {@link Component~GenericCallback}
+     *
+     * > Note: You can't use `window.clearTimeout` on the id returned by this function. This
+     *         will cause its dispose listener not to get cleaned up! Please use
+     *         {@link Component#clearTimeout} or {@link Component#dispose} instead.
+     *
+     * @param {Component~GenericCallback} fn
+     *        The function that will be run after `timeout`.
+     *
+     * @param {number} timeout
+     *        Timeout in milliseconds to delay before executing the specified function.
+     *
+     * @return {number}
+     *         Returns a timeout ID that gets used to identify the timeout. It can also
+     *         get used in {@link Component#clearTimeout} to clear the timeout that
+     *         was set.
+     *
+     * @listens Component#dispose
+     * @see [Similar to]{@link https://developer.mozilla.org/en-US/docs/Web/API/WindowTimers/setTimeout}
+     */
+    setTimeout(fn, timeout) {
+      // declare as variables so they are properly available in timeout function
+      // eslint-disable-next-line
+      var timeoutId;
+      fn = bind_(this, fn);
+      this.clearTimersOnDispose_();
+      timeoutId = window.setTimeout(() => {
+        if (this.setTimeoutIds_.has(timeoutId)) {
+          this.setTimeoutIds_.delete(timeoutId);
+        }
+        fn();
+      }, timeout);
+      this.setTimeoutIds_.add(timeoutId);
+      return timeoutId;
+    }
+
+    /**
+     * Clears a timeout that gets created via `window.setTimeout` or
+     * {@link Component#setTimeout}. If you set a timeout via {@link Component#setTimeout}
+     * use this function instead of `window.clearTimout`. If you don't your dispose
+     * listener will not get cleaned up until {@link Component#dispose}!
+     *
+     * @param {number} timeoutId
+     *        The id of the timeout to clear. The return value of
+     *        {@link Component#setTimeout} or `window.setTimeout`.
+     *
+     * @return {number}
+     *         Returns the timeout id that was cleared.
+     *
+     * @see [Similar to]{@link https://developer.mozilla.org/en-US/docs/Web/API/WindowTimers/clearTimeout}
+     */
+    clearTimeout(timeoutId) {
+      if (this.setTimeoutIds_.has(timeoutId)) {
+        this.setTimeoutIds_.delete(timeoutId);
+        window.clearTimeout(timeoutId);
+      }
+      return timeoutId;
+    }
+
+    /**
+     * Creates a function that gets run every `x` milliseconds. This function is a wrapper
+     * around `window.setInterval`. There are a few reasons to use this one instead though.
+     * 1. It gets cleared via  {@link Component#clearInterval} when
+     *    {@link Component#dispose} gets called.
+     * 2. The function callback will be a {@link Component~GenericCallback}
+     *
+     * @param {Component~GenericCallback} fn
+     *        The function to run every `x` seconds.
+     *
+     * @param {number} interval
+     *        Execute the specified function every `x` milliseconds.
+     *
+     * @return {number}
+     *         Returns an id that can be used to identify the interval. It can also be be used in
+     *         {@link Component#clearInterval} to clear the interval.
+     *
+     * @listens Component#dispose
+     * @see [Similar to]{@link https://developer.mozilla.org/en-US/docs/Web/API/WindowTimers/setInterval}
+     */
+    setInterval(fn, interval) {
+      fn = bind_(this, fn);
+      this.clearTimersOnDispose_();
+      const intervalId = window.setInterval(fn, interval);
+      this.setIntervalIds_.add(intervalId);
+      return intervalId;
+    }
+
+    /**
+     * Clears an interval that gets created via `window.setInterval` or
+     * {@link Component#setInterval}. If you set an interval via {@link Component#setInterval}
+     * use this function instead of `window.clearInterval`. If you don't your dispose
+     * listener will not get cleaned up until {@link Component#dispose}!
+     *
+     * @param {number} intervalId
+     *        The id of the interval to clear. The return value of
+     *        {@link Component#setInterval} or `window.setInterval`.
+     *
+     * @return {number}
+     *         Returns the interval id that was cleared.
+     *
+     * @see [Similar to]{@link https://developer.mozilla.org/en-US/docs/Web/API/WindowTimers/clearInterval}
+     */
+    clearInterval(intervalId) {
+      if (this.setIntervalIds_.has(intervalId)) {
+        this.setIntervalIds_.delete(intervalId);
+        window.clearInterval(intervalId);
+      }
+      return intervalId;
+    }
+
+    /**
+     * Queues up a callback to be passed to requestAnimationFrame (rAF), but
+     * with a few extra bonuses:
+     *
+     * - Supports browsers that do not support rAF by falling back to
+     *   {@link Component#setTimeout}.
+     *
+     * - The callback is turned into a {@link Component~GenericCallback} (i.e.
+     *   bound to the component).
+     *
+     * - Automatic cancellation of the rAF callback is handled if the component
+     *   is disposed before it is called.
+     *
+     * @param  {Component~GenericCallback} fn
+     *         A function that will be bound to this component and executed just
+     *         before the browser's next repaint.
+     *
+     * @return {number}
+     *         Returns an rAF ID that gets used to identify the timeout. It can
+     *         also be used in {@link Component#cancelAnimationFrame} to cancel
+     *         the animation frame callback.
+     *
+     * @listens Component#dispose
+     * @see [Similar to]{@link https://developer.mozilla.org/en-US/docs/Web/API/window/requestAnimationFrame}
+     */
+    requestAnimationFrame(fn) {
+      this.clearTimersOnDispose_();
+
+      // declare as variables so they are properly available in rAF function
+      // eslint-disable-next-line
+      var id;
+      fn = bind_(this, fn);
+      id = window.requestAnimationFrame(() => {
+        if (this.rafIds_.has(id)) {
+          this.rafIds_.delete(id);
+        }
+        fn();
+      });
+      this.rafIds_.add(id);
+      return id;
+    }
+
+    /**
+     * Request an animation frame, but only one named animation
+     * frame will be queued. Another will never be added until
+     * the previous one finishes.
+     *
+     * @param {string} name
+     *        The name to give this requestAnimationFrame
+     *
+     * @param  {Component~GenericCallback} fn
+     *         A function that will be bound to this component and executed just
+     *         before the browser's next repaint.
+     */
+    requestNamedAnimationFrame(name, fn) {
+      if (this.namedRafs_.has(name)) {
+        return;
+      }
+      this.clearTimersOnDispose_();
+      fn = bind_(this, fn);
+      const id = this.requestAnimationFrame(() => {
+        fn();
+        if (this.namedRafs_.has(name)) {
+          this.namedRafs_.delete(name);
+        }
+      });
+      this.namedRafs_.set(name, id);
+      return name;
+    }
+
+    /**
+     * Cancels a current named animation frame if it exists.
+     *
+     * @param {string} name
+     *        The name of the requestAnimationFrame to cancel.
+     */
+    cancelNamedAnimationFrame(name) {
+      if (!this.namedRafs_.has(name)) {
+        return;
+      }
+      this.cancelAnimationFrame(this.namedRafs_.get(name));
+      this.namedRafs_.delete(name);
+    }
+
+    /**
+     * Cancels a queued callback passed to {@link Component#requestAnimationFrame}
+     * (rAF).
+     *
+     * If you queue an rAF callback via {@link Component#requestAnimationFrame},
+     * use this function instead of `window.cancelAnimationFrame`. If you don't,
+     * your dispose listener will not get cleaned up until {@link Component#dispose}!
+     *
+     * @param {number} id
+     *        The rAF ID to clear. The return value of {@link Component#requestAnimationFrame}.
+     *
+     * @return {number}
+     *         Returns the rAF ID that was cleared.
+     *
+     * @see [Similar to]{@link https://developer.mozilla.org/en-US/docs/Web/API/window/cancelAnimationFrame}
+     */
+    cancelAnimationFrame(id) {
+      if (this.rafIds_.has(id)) {
+        this.rafIds_.delete(id);
+        window.cancelAnimationFrame(id);
+      }
+      return id;
+    }
+
+    /**
+     * A function to setup `requestAnimationFrame`, `setTimeout`,
+     * and `setInterval`, clearing on dispose.
+     *
+     * > Previously each timer added and removed dispose listeners on it's own.
+     * For better performance it was decided to batch them all, and use `Set`s
+     * to track outstanding timer ids.
+     *
+     * @private
+     */
+    clearTimersOnDispose_() {
+      if (this.clearingTimersOnDispose_) {
+        return;
+      }
+      this.clearingTimersOnDispose_ = true;
+      this.one('dispose', () => {
+        [['namedRafs_', 'cancelNamedAnimationFrame'], ['rafIds_', 'cancelAnimationFrame'], ['setTimeoutIds_', 'clearTimeout'], ['setIntervalIds_', 'clearInterval']].forEach(([idName, cancelName]) => {
+          // for a `Set` key will actually be the value again
+          // so forEach((val, val) =>` but for maps we want to use
+          // the key.
+          this[idName].forEach((val, key) => this[cancelName](key));
+        });
+        this.clearingTimersOnDispose_ = false;
+      });
+    }
+
+    /**
+     * Register a `Component` with `videojs` given the name and the component.
+     *
+     * > NOTE: {@link Tech}s should not be registered as a `Component`. {@link Tech}s
+     *         should be registered using {@link Tech.registerTech} or
+     *         {@link videojs:videojs.registerTech}.
+     *
+     * > NOTE: This function can also be seen on videojs as
+     *         {@link videojs:videojs.registerComponent}.
+     *
+     * @param {string} name
+     *        The name of the `Component` to register.
+     *
+     * @param {Component} ComponentToRegister
+     *        The `Component` class to register.
+     *
+     * @return {Component}
+     *         The `Component` that was registered.
+     */
+    static registerComponent(name, ComponentToRegister) {
+      if (typeof name !== 'string' || !name) {
+        throw new Error(`Illegal component name, "${name}"; must be a non-empty string.`);
+      }
+      const Tech = Component$1.getComponent('Tech');
+
+      // We need to make sure this check is only done if Tech has been registered.
+      const isTech = Tech && Tech.isTech(ComponentToRegister);
+      const isComp = Component$1 === ComponentToRegister || Component$1.prototype.isPrototypeOf(ComponentToRegister.prototype);
+      if (isTech || !isComp) {
+        let reason;
+        if (isTech) {
+          reason = 'techs must be registered using Tech.registerTech()';
+        } else {
+          reason = 'must be a Component subclass';
+        }
+        throw new Error(`Illegal component, "${name}"; ${reason}.`);
+      }
+      name = toTitleCase$1(name);
+      if (!Component$1.components_) {
+        Component$1.components_ = {};
+      }
+      const Player = Component$1.getComponent('Player');
+      if (name === 'Player' && Player && Player.players) {
+        const players = Player.players;
+        const playerNames = Object.keys(players);
+
+        // If we have players that were disposed, then their name will still be
+        // in Players.players. So, we must loop through and verify that the value
+        // for each item is not null. This allows registration of the Player component
+        // after all players have been disposed or before any were created.
+        if (players && playerNames.length > 0 && playerNames.map(pname => players[pname]).every(Boolean)) {
+          throw new Error('Can not register Player component after player has been created.');
+        }
+      }
+      Component$1.components_[name] = ComponentToRegister;
+      Component$1.components_[toLowerCase(name)] = ComponentToRegister;
+      return ComponentToRegister;
+    }
+
+    /**
+     * Get a `Component` based on the name it was registered with.
+     *
+     * @param {string} name
+     *        The Name of the component to get.
+     *
+     * @return {typeof Component}
+     *         The `Component` that got registered under the given name.
+     */
+    static getComponent(name) {
+      if (!name || !Component$1.components_) {
+        return;
+      }
+      return Component$1.components_[name];
+    }
+  }
+  Component$1.registerComponent('Component', Component$1);
+
+  /**
+   * @file time.js
+   * @module time
+   */
+
+  /**
+   * Returns the time for the specified index at the start or end
+   * of a TimeRange object.
+   *
+   * @typedef    {Function} TimeRangeIndex
+   *
+   * @param      {number} [index=0]
+   *             The range number to return the time for.
+   *
+   * @return     {number}
+   *             The time offset at the specified index.
+   *
+   * @deprecated The index argument must be provided.
+   *             In the future, leaving it out will throw an error.
+   */
+
+  /**
+   * An object that contains ranges of time, which mimics {@link TimeRanges}.
+   *
+   * @typedef  {Object} TimeRange
+   *
+   * @property {number} length
+   *           The number of time ranges represented by this object.
+   *
+   * @property {module:time~TimeRangeIndex} start
+   *           Returns the time offset at which a specified time range begins.
+   *
+   * @property {module:time~TimeRangeIndex} end
+   *           Returns the time offset at which a specified time range ends.
+   *
+   * @see https://developer.mozilla.org/en-US/docs/Web/API/TimeRanges
+   */
+
+  /**
+   * Check if any of the time ranges are over the maximum index.
+   *
+   * @private
+   * @param   {string} fnName
+   *          The function name to use for logging
+   *
+   * @param   {number} index
+   *          The index to check
+   *
+   * @param   {number} maxIndex
+   *          The maximum possible index
+   *
+   * @throws  {Error} if the timeRanges provided are over the maxIndex
+   */
+  function rangeCheck(fnName, index, maxIndex) {
+    if (typeof index !== 'number' || index < 0 || index > maxIndex) {
+      throw new Error(`Failed to execute '${fnName}' on 'TimeRanges': The index provided (${index}) is non-numeric or out of bounds (0-${maxIndex}).`);
+    }
+  }
+
+  /**
+   * Get the time for the specified index at the start or end
+   * of a TimeRange object.
+   *
+   * @private
+   * @param      {string} fnName
+   *             The function name to use for logging
+   *
+   * @param      {string} valueIndex
+   *             The property that should be used to get the time. should be
+   *             'start' or 'end'
+   *
+   * @param      {Array} ranges
+   *             An array of time ranges
+   *
+   * @param      {Array} [rangeIndex=0]
+   *             The index to start the search at
+   *
+   * @return     {number}
+   *             The time that offset at the specified index.
+   *
+   * @deprecated rangeIndex must be set to a value, in the future this will throw an error.
+   * @throws     {Error} if rangeIndex is more than the length of ranges
+   */
+  function getRange(fnName, valueIndex, ranges, rangeIndex) {
+    rangeCheck(fnName, rangeIndex, ranges.length - 1);
+    return ranges[rangeIndex][valueIndex];
+  }
+
+  /**
+   * Create a time range object given ranges of time.
+   *
+   * @private
+   * @param   {Array} [ranges]
+   *          An array of time ranges.
+   *
+   * @return  {TimeRange}
+   */
+  function createTimeRangesObj(ranges) {
+    let timeRangesObj;
+    if (ranges === undefined || ranges.length === 0) {
+      timeRangesObj = {
+        length: 0,
+        start() {
+          throw new Error('This TimeRanges object is empty');
+        },
+        end() {
+          throw new Error('This TimeRanges object is empty');
+        }
+      };
+    } else {
+      timeRangesObj = {
+        length: ranges.length,
+        start: getRange.bind(null, 'start', 0, ranges),
+        end: getRange.bind(null, 'end', 1, ranges)
+      };
+    }
+    if (window.Symbol && window.Symbol.iterator) {
+      timeRangesObj[window.Symbol.iterator] = () => (ranges || []).values();
+    }
+    return timeRangesObj;
+  }
+
+  /**
+   * Create a `TimeRange` object which mimics an
+   * {@link https://developer.mozilla.org/en-US/docs/Web/API/TimeRanges|HTML5 TimeRanges instance}.
+   *
+   * @param {number|Array[]} start
+   *        The start of a single range (a number) or an array of ranges (an
+   *        array of arrays of two numbers each).
+   *
+   * @param {number} end
+   *        The end of a single range. Cannot be used with the array form of
+   *        the `start` argument.
+   *
+   * @return {TimeRange}
+   */
+  function createTimeRanges$1(start, end) {
+    if (Array.isArray(start)) {
+      return createTimeRangesObj(start);
+    } else if (start === undefined || end === undefined) {
+      return createTimeRangesObj();
+    }
+    return createTimeRangesObj([[start, end]]);
+  }
+
+  /**
+   * Format seconds as a time string, H:MM:SS or M:SS. Supplying a guide (in
+   * seconds) will force a number of leading zeros to cover the length of the
+   * guide.
+   *
+   * @private
+   * @param  {number} seconds
+   *         Number of seconds to be turned into a string
+   *
+   * @param  {number} guide
+   *         Number (in seconds) to model the string after
+   *
+   * @return {string}
+   *         Time formatted as H:MM:SS or M:SS
+   */
+  const defaultImplementation = function (seconds, guide) {
+    seconds = seconds < 0 ? 0 : seconds;
+    let s = Math.floor(seconds % 60);
+    let m = Math.floor(seconds / 60 % 60);
+    let h = Math.floor(seconds / 3600);
+    const gm = Math.floor(guide / 60 % 60);
+    const gh = Math.floor(guide / 3600);
+
+    // handle invalid times
+    if (isNaN(seconds) || seconds === Infinity) {
+      // '-' is false for all relational operators (e.g. <, >=) so this setting
+      // will add the minimum number of fields specified by the guide
+      h = m = s = '-';
+    }
+
+    // Check if we need to show hours
+    h = h > 0 || gh > 0 ? h + ':' : '';
+
+    // If hours are showing, we may need to add a leading zero.
+    // Always show at least one digit of minutes.
+    m = ((h || gm >= 10) && m < 10 ? '0' + m : m) + ':';
+
+    // Check if leading zero is need for seconds
+    s = s < 10 ? '0' + s : s;
+    return h + m + s;
+  };
+
+  // Internal pointer to the current implementation.
+  let implementation = defaultImplementation;
+
+  /**
+   * Replaces the default formatTime implementation with a custom implementation.
+   *
+   * @param {Function} customImplementation
+   *        A function which will be used in place of the default formatTime
+   *        implementation. Will receive the current time in seconds and the
+   *        guide (in seconds) as arguments.
+   */
+  function setFormatTime(customImplementation) {
+    implementation = customImplementation;
+  }
+
+  /**
+   * Resets formatTime to the default implementation.
+   */
+  function resetFormatTime() {
+    implementation = defaultImplementation;
+  }
+
+  /**
+   * Delegates to either the default time formatting function or a custom
+   * function supplied via `setFormatTime`.
+   *
+   * Formats seconds as a time string (H:MM:SS or M:SS). Supplying a
+   * guide (in seconds) will force a number of leading zeros to cover the
+   * length of the guide.
+   *
+   * @example  formatTime(125, 600) === "02:05"
+   * @param    {number} seconds
+   *           Number of seconds to be turned into a string
+   *
+   * @param    {number} guide
+   *           Number (in seconds) to model the string after
+   *
+   * @return   {string}
+   *           Time formatted as H:MM:SS or M:SS
+   */
+  function formatTime(seconds, guide = seconds) {
+    return implementation(seconds, guide);
+  }
+
+  var Time = /*#__PURE__*/Object.freeze({
+    __proto__: null,
+    createTimeRanges: createTimeRanges$1,
+    createTimeRange: createTimeRanges$1,
+    setFormatTime: setFormatTime,
+    resetFormatTime: resetFormatTime,
+    formatTime: formatTime
+  });
+
+  /**
+   * @file buffer.js
+   * @module buffer
+   */
+
+  /**
+   * Compute the percentage of the media that has been buffered.
+   *
+   * @param { import('./time').TimeRange } buffered
+   *        The current `TimeRanges` object representing buffered time ranges
+   *
+   * @param {number} duration
+   *        Total duration of the media
+   *
+   * @return {number}
+   *         Percent buffered of the total duration in decimal form.
+   */
+  function bufferedPercent(buffered, duration) {
+    let bufferedDuration = 0;
+    let start;
+    let end;
+    if (!duration) {
+      return 0;
+    }
+    if (!buffered || !buffered.length) {
+      buffered = createTimeRanges$1(0, 0);
+    }
+    for (let i = 0; i < buffered.length; i++) {
+      start = buffered.start(i);
+      end = buffered.end(i);
+
+      // buffered end can be bigger than duration by a very small fraction
+      if (end > duration) {
+        end = duration;
+      }
+      bufferedDuration += end - start;
+    }
+    return bufferedDuration / duration;
+  }
+
+  /**
+   * @file media-error.js
+   */
+
+  /**
+   * A Custom `MediaError` class which mimics the standard HTML5 `MediaError` class.
+   *
+   * @param {number|string|Object|MediaError} value
+   *        This can be of multiple types:
+   *        - number: should be a standard error code
+   *        - string: an error message (the code will be 0)
+   *        - Object: arbitrary properties
+   *        - `MediaError` (native): used to populate a video.js `MediaError` object
+   *        - `MediaError` (video.js): will return itself if it's already a
+   *          video.js `MediaError` object.
+   *
+   * @see [MediaError Spec]{@link https://dev.w3.org/html5/spec-author-view/video.html#mediaerror}
+   * @see [Encrypted MediaError Spec]{@link https://www.w3.org/TR/2013/WD-encrypted-media-20130510/#error-codes}
+   *
+   * @class MediaError
+   */
+  function MediaError(value) {
+    // Allow redundant calls to this constructor to avoid having `instanceof`
+    // checks peppered around the code.
+    if (value instanceof MediaError) {
+      return value;
+    }
+    if (typeof value === 'number') {
+      this.code = value;
+    } else if (typeof value === 'string') {
+      // default code is zero, so this is a custom error
+      this.message = value;
+    } else if (isObject$1(value)) {
+      // We assign the `code` property manually because native `MediaError` objects
+      // do not expose it as an own/enumerable property of the object.
+      if (typeof value.code === 'number') {
+        this.code = value.code;
+      }
+      Object.assign(this, value);
+    }
+    if (!this.message) {
+      this.message = MediaError.defaultMessages[this.code] || '';
+    }
+  }
+
+  /**
+   * The error code that refers two one of the defined `MediaError` types
+   *
+   * @type {Number}
+   */
+  MediaError.prototype.code = 0;
+
+  /**
+   * An optional message that to show with the error. Message is not part of the HTML5
+   * video spec but allows for more informative custom errors.
+   *
+   * @type {String}
+   */
+  MediaError.prototype.message = '';
+
+  /**
+   * An optional status code that can be set by plugins to allow even more detail about
+   * the error. For example a plugin might provide a specific HTTP status code and an
+   * error message for that code. Then when the plugin gets that error this class will
+   * know how to display an error message for it. This allows a custom message to show
+   * up on the `Player` error overlay.
+   *
+   * @type {Array}
+   */
+  MediaError.prototype.status = null;
+
+  /**
+   * An object containing an error type, as well as other information regarding the error.
+   *
+   * @typedef {{errorType: string, [key: string]: any}} ErrorMetadata
+   */
+
+  /**
+   * An optional object to give more detail about the error. This can be used to give
+   * a higher level of specificity to an error versus the more generic MediaError codes.
+   * `metadata` expects an `errorType` string that should align with the values from videojs.Error.
+   *
+   * @type {ErrorMetadata}
+   */
+  MediaError.prototype.metadata = null;
+
+  /**
+   * Errors indexed by the W3C standard. The order **CANNOT CHANGE**! See the
+   * specification listed under {@link MediaError} for more information.
+   *
+   * @enum {array}
+   * @readonly
+   * @property {string} 0 - MEDIA_ERR_CUSTOM
+   * @property {string} 1 - MEDIA_ERR_ABORTED
+   * @property {string} 2 - MEDIA_ERR_NETWORK
+   * @property {string} 3 - MEDIA_ERR_DECODE
+   * @property {string} 4 - MEDIA_ERR_SRC_NOT_SUPPORTED
+   * @property {string} 5 - MEDIA_ERR_ENCRYPTED
+   */
+  MediaError.errorTypes = ['MEDIA_ERR_CUSTOM', 'MEDIA_ERR_ABORTED', 'MEDIA_ERR_NETWORK', 'MEDIA_ERR_DECODE', 'MEDIA_ERR_SRC_NOT_SUPPORTED', 'MEDIA_ERR_ENCRYPTED'];
+
+  /**
+   * The default `MediaError` messages based on the {@link MediaError.errorTypes}.
+   *
+   * @type {Array}
+   * @constant
+   */
+  MediaError.defaultMessages = {
+    1: 'You aborted the media playback',
+    2: 'A network error caused the media download to fail part-way.',
+    3: 'The media playback was aborted due to a corruption problem or because the media used features your browser did not support.',
+    4: 'The media could not be loaded, either because the server or network failed or because the format is not supported.',
+    5: 'The media is encrypted and we do not have the keys to decrypt it.'
+  };
+
+  /**
+   * W3C error code for any custom error.
+   *
+   * @member MediaError#MEDIA_ERR_CUSTOM
+   * @constant {number}
+   * @default 0
+   */
+  MediaError.MEDIA_ERR_CUSTOM = 0;
+
+  /**
+   * W3C error code for any custom error.
+   *
+   * @member MediaError.MEDIA_ERR_CUSTOM
+   * @constant {number}
+   * @default 0
+   */
+  MediaError.prototype.MEDIA_ERR_CUSTOM = 0;
+
+  /**
+   * W3C error code for media error aborted.
+   *
+   * @member MediaError#MEDIA_ERR_ABORTED
+   * @constant {number}
+   * @default 1
+   */
+  MediaError.MEDIA_ERR_ABORTED = 1;
+
+  /**
+   * W3C error code for media error aborted.
+   *
+   * @member MediaError.MEDIA_ERR_ABORTED
+   * @constant {number}
+   * @default 1
+   */
+  MediaError.prototype.MEDIA_ERR_ABORTED = 1;
+
+  /**
+   * W3C error code for any network error.
+   *
+   * @member MediaError#MEDIA_ERR_NETWORK
+   * @constant {number}
+   * @default 2
+   */
+  MediaError.MEDIA_ERR_NETWORK = 2;
+
+  /**
+   * W3C error code for any network error.
+   *
+   * @member MediaError.MEDIA_ERR_NETWORK
+   * @constant {number}
+   * @default 2
+   */
+  MediaError.prototype.MEDIA_ERR_NETWORK = 2;
+
+  /**
+   * W3C error code for any decoding error.
+   *
+   * @member MediaError#MEDIA_ERR_DECODE
+   * @constant {number}
+   * @default 3
+   */
+  MediaError.MEDIA_ERR_DECODE = 3;
+
+  /**
+   * W3C error code for any decoding error.
+   *
+   * @member MediaError.MEDIA_ERR_DECODE
+   * @constant {number}
+   * @default 3
+   */
+  MediaError.prototype.MEDIA_ERR_DECODE = 3;
+
+  /**
+   * W3C error code for any time that a source is not supported.
+   *
+   * @member MediaError#MEDIA_ERR_SRC_NOT_SUPPORTED
+   * @constant {number}
+   * @default 4
+   */
+  MediaError.MEDIA_ERR_SRC_NOT_SUPPORTED = 4;
+
+  /**
+   * W3C error code for any time that a source is not supported.
+   *
+   * @member MediaError.MEDIA_ERR_SRC_NOT_SUPPORTED
+   * @constant {number}
+   * @default 4
+   */
+  MediaError.prototype.MEDIA_ERR_SRC_NOT_SUPPORTED = 4;
+
+  /**
+   * W3C error code for any time that a source is encrypted.
+   *
+   * @member MediaError#MEDIA_ERR_ENCRYPTED
+   * @constant {number}
+   * @default 5
+   */
+  MediaError.MEDIA_ERR_ENCRYPTED = 5;
+
+  /**
+   * W3C error code for any time that a source is encrypted.
+   *
+   * @member MediaError.MEDIA_ERR_ENCRYPTED
+   * @constant {number}
+   * @default 5
+   */
+  MediaError.prototype.MEDIA_ERR_ENCRYPTED = 5;
+
+  var tuple = SafeParseTuple;
+  function SafeParseTuple(obj, reviver) {
+    var json;
+    var error = null;
+    try {
+      json = JSON.parse(obj, reviver);
+    } catch (err) {
+      error = err;
+    }
+    return [error, json];
+  }
+
+  /**
+   * Returns whether an object is `Promise`-like (i.e. has a `then` method).
+   *
+   * @param  {Object}  value
+   *         An object that may or may not be `Promise`-like.
+   *
+   * @return {boolean}
+   *         Whether or not the object is `Promise`-like.
+   */
+  function isPromise(value) {
+    return value !== undefined && value !== null && typeof value.then === 'function';
+  }
+
+  /**
+   * Silence a Promise-like object.
+   *
+   * This is useful for avoiding non-harmful, but potentially confusing "uncaught
+   * play promise" rejection error messages.
+   *
+   * @param  {Object} value
+   *         An object that may or may not be `Promise`-like.
+   */
+  function silencePromise(value) {
+    if (isPromise(value)) {
+      value.then(null, e => {});
+    }
+  }
+
+  /**
+   * @file text-track-list-converter.js Utilities for capturing text track state and
+   * re-creating tracks based on a capture.
+   *
+   * @module text-track-list-converter
+   */
+
+  /**
+   * Examine a single {@link TextTrack} and return a JSON-compatible javascript object that
+   * represents the {@link TextTrack}'s state.
+   *
+   * @param {TextTrack} track
+   *        The text track to query.
+   *
+   * @return {Object}
+   *         A serializable javascript representation of the TextTrack.
+   * @private
+   */
+  const trackToJson_ = function (track) {
+    const ret = ['kind', 'label', 'language', 'id', 'inBandMetadataTrackDispatchType', 'mode', 'src'].reduce((acc, prop, i) => {
+      if (track[prop]) {
+        acc[prop] = track[prop];
+      }
+      return acc;
+    }, {
+      cues: track.cues && Array.prototype.map.call(track.cues, function (cue) {
+        return {
+          startTime: cue.startTime,
+          endTime: cue.endTime,
+          text: cue.text,
+          id: cue.id
+        };
+      })
+    });
+    return ret;
+  };
+
+  /**
+   * Examine a {@link Tech} and return a JSON-compatible javascript array that represents the
+   * state of all {@link TextTrack}s currently configured. The return array is compatible with
+   * {@link text-track-list-converter:jsonToTextTracks}.
+   *
+   * @param { import('../tech/tech').default } tech
+   *        The tech object to query
+   *
+   * @return {Array}
+   *         A serializable javascript representation of the {@link Tech}s
+   *         {@link TextTrackList}.
+   */
+  const textTracksToJson = function (tech) {
+    const trackEls = tech.$$('track');
+    const trackObjs = Array.prototype.map.call(trackEls, t => t.track);
+    const tracks = Array.prototype.map.call(trackEls, function (trackEl) {
+      const json = trackToJson_(trackEl.track);
+      if (trackEl.src) {
+        json.src = trackEl.src;
+      }
+      return json;
+    });
+    return tracks.concat(Array.prototype.filter.call(tech.textTracks(), function (track) {
+      return trackObjs.indexOf(track) === -1;
+    }).map(trackToJson_));
+  };
+
+  /**
+   * Create a set of remote {@link TextTrack}s on a {@link Tech} based on an array of javascript
+   * object {@link TextTrack} representations.
+   *
+   * @param {Array} json
+   *        An array of `TextTrack` representation objects, like those that would be
+   *        produced by `textTracksToJson`.
+   *
+   * @param {Tech} tech
+   *        The `Tech` to create the `TextTrack`s on.
+   */
+  const jsonToTextTracks = function (json, tech) {
+    json.forEach(function (track) {
+      const addedTrack = tech.addRemoteTextTrack(track).track;
+      if (!track.src && track.cues) {
+        track.cues.forEach(cue => addedTrack.addCue(cue));
+      }
+    });
+    return tech.textTracks();
+  };
+  var textTrackConverter = {
+    textTracksToJson,
+    jsonToTextTracks,
+    trackToJson_
+  };
+
+  /**
+   * @file modal-dialog.js
+   */
+  const MODAL_CLASS_NAME = 'vjs-modal-dialog';
+
+  /**
+   * The `ModalDialog` displays over the video and its controls, which blocks
+   * interaction with the player until it is closed.
+   *
+   * Modal dialogs include a "Close" button and will close when that button
+   * is activated - or when ESC is pressed anywhere.
+   *
+   * @extends Component
+   */
+  class ModalDialog extends Component$1 {
+    /**
+     * Create an instance of this class.
+     *
+     * @param { import('./player').default } player
+     *        The `Player` that this class should be attached to.
+     *
+     * @param {Object} [options]
+     *        The key/value store of player options.
+     *
+     * @param { import('./utils/dom').ContentDescriptor} [options.content=undefined]
+     *        Provide customized content for this modal.
+     *
+     * @param {string} [options.description]
+     *        A text description for the modal, primarily for accessibility.
+     *
+     * @param {boolean} [options.fillAlways=false]
+     *        Normally, modals are automatically filled only the first time
+     *        they open. This tells the modal to refresh its content
+     *        every time it opens.
+     *
+     * @param {string} [options.label]
+     *        A text label for the modal, primarily for accessibility.
+     *
+     * @param {boolean} [options.pauseOnOpen=true]
+     *        If `true`, playback will will be paused if playing when
+     *        the modal opens, and resumed when it closes.
+     *
+     * @param {boolean} [options.temporary=true]
+     *        If `true`, the modal can only be opened once; it will be
+     *        disposed as soon as it's closed.
+     *
+     * @param {boolean} [options.uncloseable=false]
+     *        If `true`, the user will not be able to close the modal
+     *        through the UI in the normal ways. Programmatic closing is
+     *        still possible.
+     */
+    constructor(player, options) {
+      super(player, options);
+      this.handleKeyDown_ = e => this.handleKeyDown(e);
+      this.close_ = e => this.close(e);
+      this.opened_ = this.hasBeenOpened_ = this.hasBeenFilled_ = false;
+      this.closeable(!this.options_.uncloseable);
+      this.content(this.options_.content);
+
+      // Make sure the contentEl is defined AFTER any children are initialized
+      // because we only want the contents of the modal in the contentEl
+      // (not the UI elements like the close button).
+      this.contentEl_ = createEl('div', {
+        className: `${MODAL_CLASS_NAME}-content`
+      }, {
+        role: 'document'
+      });
+      this.descEl_ = createEl('p', {
+        className: `${MODAL_CLASS_NAME}-description vjs-control-text`,
+        id: this.el().getAttribute('aria-describedby')
+      });
+      textContent(this.descEl_, this.description());
+      this.el_.appendChild(this.descEl_);
+      this.el_.appendChild(this.contentEl_);
+    }
+
+    /**
+     * Create the `ModalDialog`'s DOM element
+     *
+     * @return {Element}
+     *         The DOM element that gets created.
+     */
+    createEl() {
+      return super.createEl('div', {
+        className: this.buildCSSClass(),
+        tabIndex: -1
+      }, {
+        'aria-describedby': `${this.id()}_description`,
+        'aria-hidden': 'true',
+        'aria-label': this.label(),
+        'role': 'dialog',
+        'aria-live': 'polite'
+      });
+    }
+    dispose() {
+      this.contentEl_ = null;
+      this.descEl_ = null;
+      this.previouslyActiveEl_ = null;
+      super.dispose();
+    }
+
+    /**
+     * Builds the default DOM `className`.
+     *
+     * @return {string}
+     *         The DOM `className` for this object.
+     */
+    buildCSSClass() {
+      return `${MODAL_CLASS_NAME} vjs-hidden ${super.buildCSSClass()}`;
+    }
+
+    /**
+     * Returns the label string for this modal. Primarily used for accessibility.
+     *
+     * @return {string}
+     *         the localized or raw label of this modal.
+     */
+    label() {
+      return this.localize(this.options_.label || 'Modal Window');
+    }
+
+    /**
+     * Returns the description string for this modal. Primarily used for
+     * accessibility.
+     *
+     * @return {string}
+     *         The localized or raw description of this modal.
+     */
+    description() {
+      let desc = this.options_.description || this.localize('This is a modal window.');
+
+      // Append a universal closeability message if the modal is closeable.
+      if (this.closeable()) {
+        desc += ' ' + this.localize('This modal can be closed by pressing the Escape key or activating the close button.');
+      }
+      return desc;
+    }
+
+    /**
+     * Opens the modal.
+     *
+     * @fires ModalDialog#beforemodalopen
+     * @fires ModalDialog#modalopen
+     */
+    open() {
+      if (this.opened_) {
+        if (this.options_.fillAlways) {
+          this.fill();
+        }
+        return;
+      }
+      const player = this.player();
+
+      /**
+        * Fired just before a `ModalDialog` is opened.
+        *
+        * @event ModalDialog#beforemodalopen
+        * @type {Event}
+        */
+      this.trigger('beforemodalopen');
+      this.opened_ = true;
+
+      // Fill content if the modal has never opened before and
+      // never been filled.
+      if (this.options_.fillAlways || !this.hasBeenOpened_ && !this.hasBeenFilled_) {
+        this.fill();
+      }
+
+      // If the player was playing, pause it and take note of its previously
+      // playing state.
+      this.wasPlaying_ = !player.paused();
+      if (this.options_.pauseOnOpen && this.wasPlaying_) {
+        player.pause();
+      }
+      this.on('keydown', this.handleKeyDown_);
+
+      // Hide controls and note if they were enabled.
+      this.hadControls_ = player.controls();
+      player.controls(false);
+      this.show();
+      this.conditionalFocus_();
+      this.el().setAttribute('aria-hidden', 'false');
+
+      /**
+        * Fired just after a `ModalDialog` is opened.
+        *
+        * @event ModalDialog#modalopen
+        * @type {Event}
+        */
+      this.trigger('modalopen');
+      this.hasBeenOpened_ = true;
+    }
+
+    /**
+     * If the `ModalDialog` is currently open or closed.
+     *
+     * @param  {boolean} [value]
+     *         If given, it will open (`true`) or close (`false`) the modal.
+     *
+     * @return {boolean}
+     *         the current open state of the modaldialog
+     */
+    opened(value) {
+      if (typeof value === 'boolean') {
+        this[value ? 'open' : 'close']();
+      }
+      return this.opened_;
+    }
+
+    /**
+     * Closes the modal, does nothing if the `ModalDialog` is
+     * not open.
+     *
+     * @fires ModalDialog#beforemodalclose
+     * @fires ModalDialog#modalclose
+     */
+    close() {
+      if (!this.opened_) {
+        return;
+      }
+      const player = this.player();
+
+      /**
+        * Fired just before a `ModalDialog` is closed.
+        *
+        * @event ModalDialog#beforemodalclose
+        * @type {Event}
+        */
+      this.trigger('beforemodalclose');
+      this.opened_ = false;
+      if (this.wasPlaying_ && this.options_.pauseOnOpen) {
+        player.play();
+      }
+      this.off('keydown', this.handleKeyDown_);
+      if (this.hadControls_) {
+        player.controls(true);
+      }
+      this.hide();
+      this.el().setAttribute('aria-hidden', 'true');
+
+      /**
+        * Fired just after a `ModalDialog` is closed.
+        *
+        * @event ModalDialog#modalclose
+        * @type {Event}
+        */
+      this.trigger('modalclose');
+      this.conditionalBlur_();
+      if (this.options_.temporary) {
+        this.dispose();
+      }
+    }
+
+    /**
+     * Check to see if the `ModalDialog` is closeable via the UI.
+     *
+     * @param  {boolean} [value]
+     *         If given as a boolean, it will set the `closeable` option.
+     *
+     * @return {boolean}
+     *         Returns the final value of the closable option.
+     */
+    closeable(value) {
+      if (typeof value === 'boolean') {
+        const closeable = this.closeable_ = !!value;
+        let close = this.getChild('closeButton');
+
+        // If this is being made closeable and has no close button, add one.
+        if (closeable && !close) {
+          // The close button should be a child of the modal - not its
+          // content element, so temporarily change the content element.
+          const temp = this.contentEl_;
+          this.contentEl_ = this.el_;
+          close = this.addChild('closeButton', {
+            controlText: 'Close Modal Dialog'
+          });
+          this.contentEl_ = temp;
+          this.on(close, 'close', this.close_);
+        }
+
+        // If this is being made uncloseable and has a close button, remove it.
+        if (!closeable && close) {
+          this.off(close, 'close', this.close_);
+          this.removeChild(close);
+          close.dispose();
+        }
+      }
+      return this.closeable_;
+    }
+
+    /**
+     * Fill the modal's content element with the modal's "content" option.
+     * The content element will be emptied before this change takes place.
+     */
+    fill() {
+      this.fillWith(this.content());
+    }
+
+    /**
+     * Fill the modal's content element with arbitrary content.
+     * The content element will be emptied before this change takes place.
+     *
+     * @fires ModalDialog#beforemodalfill
+     * @fires ModalDialog#modalfill
+     *
+     * @param { import('./utils/dom').ContentDescriptor} [content]
+     *        The same rules apply to this as apply to the `content` option.
+     */
+    fillWith(content) {
+      const contentEl = this.contentEl();
+      const parentEl = contentEl.parentNode;
+      const nextSiblingEl = contentEl.nextSibling;
+
+      /**
+        * Fired just before a `ModalDialog` is filled with content.
+        *
+        * @event ModalDialog#beforemodalfill
+        * @type {Event}
+        */
+      this.trigger('beforemodalfill');
+      this.hasBeenFilled_ = true;
+
+      // Detach the content element from the DOM before performing
+      // manipulation to avoid modifying the live DOM multiple times.
+      parentEl.removeChild(contentEl);
+      this.empty();
+      insertContent(contentEl, content);
+      /**
+       * Fired just after a `ModalDialog` is filled with content.
+       *
+       * @event ModalDialog#modalfill
+       * @type {Event}
+       */
+      this.trigger('modalfill');
+
+      // Re-inject the re-filled content element.
+      if (nextSiblingEl) {
+        parentEl.insertBefore(contentEl, nextSiblingEl);
+      } else {
+        parentEl.appendChild(contentEl);
+      }
+
+      // make sure that the close button is last in the dialog DOM
+      const closeButton = this.getChild('closeButton');
+      if (closeButton) {
+        parentEl.appendChild(closeButton.el_);
+      }
+    }
+
+    /**
+     * Empties the content element. This happens anytime the modal is filled.
+     *
+     * @fires ModalDialog#beforemodalempty
+     * @fires ModalDialog#modalempty
+     */
+    empty() {
+      /**
+      * Fired just before a `ModalDialog` is emptied.
+      *
+      * @event ModalDialog#beforemodalempty
+      * @type {Event}
+      */
+      this.trigger('beforemodalempty');
+      emptyEl(this.contentEl());
+
+      /**
+      * Fired just after a `ModalDialog` is emptied.
+      *
+      * @event ModalDialog#modalempty
+      * @type {Event}
+      */
+      this.trigger('modalempty');
+    }
+
+    /**
+     * Gets or sets the modal content, which gets normalized before being
+     * rendered into the DOM.
+     *
+     * This does not update the DOM or fill the modal, but it is called during
+     * that process.
+     *
+     * @param  { import('./utils/dom').ContentDescriptor} [value]
+     *         If defined, sets the internal content value to be used on the
+     *         next call(s) to `fill`. This value is normalized before being
+     *         inserted. To "clear" the internal content value, pass `null`.
+     *
+     * @return { import('./utils/dom').ContentDescriptor}
+     *         The current content of the modal dialog
+     */
+    content(value) {
+      if (typeof value !== 'undefined') {
+        this.content_ = value;
+      }
+      return this.content_;
+    }
+
+    /**
+     * conditionally focus the modal dialog if focus was previously on the player.
+     *
+     * @private
+     */
+    conditionalFocus_() {
+      const activeEl = document.activeElement;
+      const playerEl = this.player_.el_;
+      this.previouslyActiveEl_ = null;
+      if (playerEl.contains(activeEl) || playerEl === activeEl) {
+        this.previouslyActiveEl_ = activeEl;
+        this.focus();
+      }
+    }
+
+    /**
+     * conditionally blur the element and refocus the last focused element
+     *
+     * @private
+     */
+    conditionalBlur_() {
+      if (this.previouslyActiveEl_) {
+        this.previouslyActiveEl_.focus();
+        this.previouslyActiveEl_ = null;
+      }
+    }
+
+    /**
+     * Keydown handler. Attached when modal is focused.
+     *
+     * @listens keydown
+     */
+    handleKeyDown(event) {
+      // Do not allow keydowns to reach out of the modal dialog.
+      event.stopPropagation();
+      if (keycode.isEventKey(event, 'Escape') && this.closeable()) {
+        event.preventDefault();
+        this.close();
+        return;
+      }
+
+      // exit early if it isn't a tab key
+      if (!keycode.isEventKey(event, 'Tab')) {
+        return;
+      }
+      const focusableEls = this.focusableEls_();
+      const activeEl = this.el_.querySelector(':focus');
+      let focusIndex;
+      for (let i = 0; i < focusableEls.length; i++) {
+        if (activeEl === focusableEls[i]) {
+          focusIndex = i;
+          break;
+        }
+      }
+      if (document.activeElement === this.el_) {
+        focusIndex = 0;
+      }
+      if (event.shiftKey && focusIndex === 0) {
+        focusableEls[focusableEls.length - 1].focus();
+        event.preventDefault();
+      } else if (!event.shiftKey && focusIndex === focusableEls.length - 1) {
+        focusableEls[0].focus();
+        event.preventDefault();
+      }
+    }
+
+    /**
+     * get all focusable elements
+     *
+     * @private
+     */
+    focusableEls_() {
+      const allChildren = this.el_.querySelectorAll('*');
+      return Array.prototype.filter.call(allChildren, child => {
+        return (child instanceof window.HTMLAnchorElement || child instanceof window.HTMLAreaElement) && child.hasAttribute('href') || (child instanceof window.HTMLInputElement || child instanceof window.HTMLSelectElement || child instanceof window.HTMLTextAreaElement || child instanceof window.HTMLButtonElement) && !child.hasAttribute('disabled') || child instanceof window.HTMLIFrameElement || child instanceof window.HTMLObjectElement || child instanceof window.HTMLEmbedElement || child.hasAttribute('tabindex') && child.getAttribute('tabindex') !== -1 || child.hasAttribute('contenteditable');
+      });
+    }
+  }
+
+  /**
+   * Default options for `ModalDialog` default options.
+   *
+   * @type {Object}
+   * @private
+   */
+  ModalDialog.prototype.options_ = {
+    pauseOnOpen: true,
+    temporary: true
+  };
+  Component$1.registerComponent('ModalDialog', ModalDialog);
+
+  /**
+   * @file track-list.js
+   */
+
+  /**
+   * Common functionaliy between {@link TextTrackList}, {@link AudioTrackList}, and
+   * {@link VideoTrackList}
+   *
+   * @extends EventTarget
+   */
+  class TrackList extends EventTarget$2 {
+    /**
+     * Create an instance of this class
+     *
+     * @param { import('./track').default[] } tracks
+     *        A list of tracks to initialize the list with.
+     *
+     * @abstract
+     */
+    constructor(tracks = []) {
+      super();
+      this.tracks_ = [];
+
+      /**
+       * @memberof TrackList
+       * @member {number} length
+       *         The current number of `Track`s in the this Trackist.
+       * @instance
+       */
+      Object.defineProperty(this, 'length', {
+        get() {
+          return this.tracks_.length;
+        }
+      });
+      for (let i = 0; i < tracks.length; i++) {
+        this.addTrack(tracks[i]);
+      }
+    }
+
+    /**
+     * Add a {@link Track} to the `TrackList`
+     *
+     * @param { import('./track').default } track
+     *        The audio, video, or text track to add to the list.
+     *
+     * @fires TrackList#addtrack
+     */
+    addTrack(track) {
+      const index = this.tracks_.length;
+      if (!('' + index in this)) {
+        Object.defineProperty(this, index, {
+          get() {
+            return this.tracks_[index];
+          }
+        });
+      }
+
+      // Do not add duplicate tracks
+      if (this.tracks_.indexOf(track) === -1) {
+        this.tracks_.push(track);
+        /**
+         * Triggered when a track is added to a track list.
+         *
+         * @event TrackList#addtrack
+         * @type {Event}
+         * @property {Track} track
+         *           A reference to track that was added.
+         */
+        this.trigger({
+          track,
+          type: 'addtrack',
+          target: this
+        });
+      }
+
+      /**
+       * Triggered when a track label is changed.
+       *
+       * @event TrackList#addtrack
+       * @type {Event}
+       * @property {Track} track
+       *           A reference to track that was added.
+       */
+      track.labelchange_ = () => {
+        this.trigger({
+          track,
+          type: 'labelchange',
+          target: this
+        });
+      };
+      if (isEvented(track)) {
+        track.addEventListener('labelchange', track.labelchange_);
+      }
+    }
+
+    /**
+     * Remove a {@link Track} from the `TrackList`
+     *
+     * @param { import('./track').default } rtrack
+     *        The audio, video, or text track to remove from the list.
+     *
+     * @fires TrackList#removetrack
+     */
+    removeTrack(rtrack) {
+      let track;
+      for (let i = 0, l = this.length; i < l; i++) {
+        if (this[i] === rtrack) {
+          track = this[i];
+          if (track.off) {
+            track.off();
+          }
+          this.tracks_.splice(i, 1);
+          break;
+        }
+      }
+      if (!track) {
+        return;
+      }
+
+      /**
+       * Triggered when a track is removed from track list.
+       *
+       * @event TrackList#removetrack
+       * @type {Event}
+       * @property {Track} track
+       *           A reference to track that was removed.
+       */
+      this.trigger({
+        track,
+        type: 'removetrack',
+        target: this
+      });
+    }
+
+    /**
+     * Get a Track from the TrackList by a tracks id
+     *
+     * @param {string} id - the id of the track to get
+     * @method getTrackById
+     * @return { import('./track').default }
+     * @private
+     */
+    getTrackById(id) {
+      let result = null;
+      for (let i = 0, l = this.length; i < l; i++) {
+        const track = this[i];
+        if (track.id === id) {
+          result = track;
+          break;
+        }
+      }
+      return result;
+    }
+  }
+
+  /**
+   * Triggered when a different track is selected/enabled.
+   *
+   * @event TrackList#change
+   * @type {Event}
+   */
+
+  /**
+   * Events that can be called with on + eventName. See {@link EventHandler}.
+   *
+   * @property {Object} TrackList#allowedEvents_
+   * @protected
+   */
+  TrackList.prototype.allowedEvents_ = {
+    change: 'change',
+    addtrack: 'addtrack',
+    removetrack: 'removetrack',
+    labelchange: 'labelchange'
+  };
+
+  // emulate attribute EventHandler support to allow for feature detection
+  for (const event in TrackList.prototype.allowedEvents_) {
+    TrackList.prototype['on' + event] = null;
+  }
+
+  /**
+   * @file audio-track-list.js
+   */
+
+  /**
+   * Anywhere we call this function we diverge from the spec
+   * as we only support one enabled audiotrack at a time
+   *
+   * @param {AudioTrackList} list
+   *        list to work on
+   *
+   * @param { import('./audio-track').default } track
+   *        The track to skip
+   *
+   * @private
+   */
+  const disableOthers$1 = function (list, track) {
+    for (let i = 0; i < list.length; i++) {
+      if (!Object.keys(list[i]).length || track.id === list[i].id) {
+        continue;
+      }
+      // another audio track is enabled, disable it
+      list[i].enabled = false;
+    }
+  };
+
+  /**
+   * The current list of {@link AudioTrack} for a media file.
+   *
+   * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#audiotracklist}
+   * @extends TrackList
+   */
+  class AudioTrackList extends TrackList {
+    /**
+     * Create an instance of this class.
+     *
+     * @param { import('./audio-track').default[] } [tracks=[]]
+     *        A list of `AudioTrack` to instantiate the list with.
+     */
+    constructor(tracks = []) {
+      // make sure only 1 track is enabled
+      // sorted from last index to first index
+      for (let i = tracks.length - 1; i >= 0; i--) {
+        if (tracks[i].enabled) {
+          disableOthers$1(tracks, tracks[i]);
+          break;
+        }
+      }
+      super(tracks);
+      this.changing_ = false;
+    }
+
+    /**
+     * Add an {@link AudioTrack} to the `AudioTrackList`.
+     *
+     * @param { import('./audio-track').default } track
+     *        The AudioTrack to add to the list
+     *
+     * @fires TrackList#addtrack
+     */
+    addTrack(track) {
+      if (track.enabled) {
+        disableOthers$1(this, track);
+      }
+      super.addTrack(track);
+      // native tracks don't have this
+      if (!track.addEventListener) {
+        return;
+      }
+      track.enabledChange_ = () => {
+        // when we are disabling other tracks (since we don't support
+        // more than one track at a time) we will set changing_
+        // to true so that we don't trigger additional change events
+        if (this.changing_) {
+          return;
+        }
+        this.changing_ = true;
+        disableOthers$1(this, track);
+        this.changing_ = false;
+        this.trigger('change');
+      };
+
+      /**
+       * @listens AudioTrack#enabledchange
+       * @fires TrackList#change
+       */
+      track.addEventListener('enabledchange', track.enabledChange_);
+    }
+    removeTrack(rtrack) {
+      super.removeTrack(rtrack);
+      if (rtrack.removeEventListener && rtrack.enabledChange_) {
+        rtrack.removeEventListener('enabledchange', rtrack.enabledChange_);
+        rtrack.enabledChange_ = null;
+      }
+    }
+  }
+
+  /**
+   * @file video-track-list.js
+   */
+
+  /**
+   * Un-select all other {@link VideoTrack}s that are selected.
+   *
+   * @param {VideoTrackList} list
+   *        list to work on
+   *
+   * @param { import('./video-track').default } track
+   *        The track to skip
+   *
+   * @private
+   */
+  const disableOthers = function (list, track) {
+    for (let i = 0; i < list.length; i++) {
+      if (!Object.keys(list[i]).length || track.id === list[i].id) {
+        continue;
+      }
+      // another video track is enabled, disable it
+      list[i].selected = false;
+    }
+  };
+
+  /**
+   * The current list of {@link VideoTrack} for a video.
+   *
+   * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#videotracklist}
+   * @extends TrackList
+   */
+  class VideoTrackList extends TrackList {
+    /**
+     * Create an instance of this class.
+     *
+     * @param {VideoTrack[]} [tracks=[]]
+     *        A list of `VideoTrack` to instantiate the list with.
+     */
+    constructor(tracks = []) {
+      // make sure only 1 track is enabled
+      // sorted from last index to first index
+      for (let i = tracks.length - 1; i >= 0; i--) {
+        if (tracks[i].selected) {
+          disableOthers(tracks, tracks[i]);
+          break;
+        }
+      }
+      super(tracks);
+      this.changing_ = false;
+
+      /**
+       * @member {number} VideoTrackList#selectedIndex
+       *         The current index of the selected {@link VideoTrack`}.
+       */
+      Object.defineProperty(this, 'selectedIndex', {
+        get() {
+          for (let i = 0; i < this.length; i++) {
+            if (this[i].selected) {
+              return i;
+            }
+          }
+          return -1;
+        },
+        set() {}
+      });
+    }
+
+    /**
+     * Add a {@link VideoTrack} to the `VideoTrackList`.
+     *
+     * @param { import('./video-track').default } track
+     *        The VideoTrack to add to the list
+     *
+     * @fires TrackList#addtrack
+     */
+    addTrack(track) {
+      if (track.selected) {
+        disableOthers(this, track);
+      }
+      super.addTrack(track);
+      // native tracks don't have this
+      if (!track.addEventListener) {
+        return;
+      }
+      track.selectedChange_ = () => {
+        if (this.changing_) {
+          return;
+        }
+        this.changing_ = true;
+        disableOthers(this, track);
+        this.changing_ = false;
+        this.trigger('change');
+      };
+
+      /**
+       * @listens VideoTrack#selectedchange
+       * @fires TrackList#change
+       */
+      track.addEventListener('selectedchange', track.selectedChange_);
+    }
+    removeTrack(rtrack) {
+      super.removeTrack(rtrack);
+      if (rtrack.removeEventListener && rtrack.selectedChange_) {
+        rtrack.removeEventListener('selectedchange', rtrack.selectedChange_);
+        rtrack.selectedChange_ = null;
+      }
+    }
+  }
+
+  /**
+   * @file text-track-list.js
+   */
+
+  /**
+   * The current list of {@link TextTrack} for a media file.
+   *
+   * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#texttracklist}
+   * @extends TrackList
+   */
+  class TextTrackList extends TrackList {
+    /**
+     * Add a {@link TextTrack} to the `TextTrackList`
+     *
+     * @param { import('./text-track').default } track
+     *        The text track to add to the list.
+     *
+     * @fires TrackList#addtrack
+     */
+    addTrack(track) {
+      super.addTrack(track);
+      if (!this.queueChange_) {
+        this.queueChange_ = () => this.queueTrigger('change');
+      }
+      if (!this.triggerSelectedlanguagechange) {
+        this.triggerSelectedlanguagechange_ = () => this.trigger('selectedlanguagechange');
+      }
+
+      /**
+       * @listens TextTrack#modechange
+       * @fires TrackList#change
+       */
+      track.addEventListener('modechange', this.queueChange_);
+      const nonLanguageTextTrackKind = ['metadata', 'chapters'];
+      if (nonLanguageTextTrackKind.indexOf(track.kind) === -1) {
+        track.addEventListener('modechange', this.triggerSelectedlanguagechange_);
+      }
+    }
+    removeTrack(rtrack) {
+      super.removeTrack(rtrack);
+
+      // manually remove the event handlers we added
+      if (rtrack.removeEventListener) {
+        if (this.queueChange_) {
+          rtrack.removeEventListener('modechange', this.queueChange_);
+        }
+        if (this.selectedlanguagechange_) {
+          rtrack.removeEventListener('modechange', this.triggerSelectedlanguagechange_);
+        }
+      }
+    }
+  }
+
+  /**
+   * @file html-track-element-list.js
+   */
+
+  /**
+   * The current list of {@link HtmlTrackElement}s.
+   */
+  class HtmlTrackElementList {
+    /**
+     * Create an instance of this class.
+     *
+     * @param {HtmlTrackElement[]} [tracks=[]]
+     *        A list of `HtmlTrackElement` to instantiate the list with.
+     */
+    constructor(trackElements = []) {
+      this.trackElements_ = [];
+
+      /**
+       * @memberof HtmlTrackElementList
+       * @member {number} length
+       *         The current number of `Track`s in the this Trackist.
+       * @instance
+       */
+      Object.defineProperty(this, 'length', {
+        get() {
+          return this.trackElements_.length;
+        }
+      });
+      for (let i = 0, length = trackElements.length; i < length; i++) {
+        this.addTrackElement_(trackElements[i]);
+      }
+    }
+
+    /**
+     * Add an {@link HtmlTrackElement} to the `HtmlTrackElementList`
+     *
+     * @param {HtmlTrackElement} trackElement
+     *        The track element to add to the list.
+     *
+     * @private
+     */
+    addTrackElement_(trackElement) {
+      const index = this.trackElements_.length;
+      if (!('' + index in this)) {
+        Object.defineProperty(this, index, {
+          get() {
+            return this.trackElements_[index];
+          }
+        });
+      }
+
+      // Do not add duplicate elements
+      if (this.trackElements_.indexOf(trackElement) === -1) {
+        this.trackElements_.push(trackElement);
+      }
+    }
+
+    /**
+     * Get an {@link HtmlTrackElement} from the `HtmlTrackElementList` given an
+     * {@link TextTrack}.
+     *
+     * @param {TextTrack} track
+     *        The track associated with a track element.
+     *
+     * @return {HtmlTrackElement|undefined}
+     *         The track element that was found or undefined.
+     *
+     * @private
+     */
+    getTrackElementByTrack_(track) {
+      let trackElement_;
+      for (let i = 0, length = this.trackElements_.length; i < length; i++) {
+        if (track === this.trackElements_[i].track) {
+          trackElement_ = this.trackElements_[i];
+          break;
+        }
+      }
+      return trackElement_;
+    }
+
+    /**
+     * Remove a {@link HtmlTrackElement} from the `HtmlTrackElementList`
+     *
+     * @param {HtmlTrackElement} trackElement
+     *        The track element to remove from the list.
+     *
+     * @private
+     */
+    removeTrackElement_(trackElement) {
+      for (let i = 0, length = this.trackElements_.length; i < length; i++) {
+        if (trackElement === this.trackElements_[i]) {
+          if (this.trackElements_[i].track && typeof this.trackElements_[i].track.off === 'function') {
+            this.trackElements_[i].track.off();
+          }
+          if (typeof this.trackElements_[i].off === 'function') {
+            this.trackElements_[i].off();
+          }
+          this.trackElements_.splice(i, 1);
+          break;
+        }
+      }
+    }
+  }
+
+  /**
+   * @file text-track-cue-list.js
+   */
+
+  /**
+   * @typedef {Object} TextTrackCueList~TextTrackCue
+   *
+   * @property {string} id
+   *           The unique id for this text track cue
+   *
+   * @property {number} startTime
+   *           The start time for this text track cue
+   *
+   * @property {number} endTime
+   *           The end time for this text track cue
+   *
+   * @property {boolean} pauseOnExit
+   *           Pause when the end time is reached if true.
+   *
+   * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#texttrackcue}
+   */
+
+  /**
+   * A List of TextTrackCues.
+   *
+   * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#texttrackcuelist}
+   */
+  class TextTrackCueList {
+    /**
+     * Create an instance of this class..
+     *
+     * @param {Array} cues
+     *        A list of cues to be initialized with
+     */
+    constructor(cues) {
+      TextTrackCueList.prototype.setCues_.call(this, cues);
+
+      /**
+       * @memberof TextTrackCueList
+       * @member {number} length
+       *         The current number of `TextTrackCue`s in the TextTrackCueList.
+       * @instance
+       */
+      Object.defineProperty(this, 'length', {
+        get() {
+          return this.length_;
+        }
+      });
+    }
+
+    /**
+     * A setter for cues in this list. Creates getters
+     * an an index for the cues.
+     *
+     * @param {Array} cues
+     *        An array of cues to set
+     *
+     * @private
+     */
+    setCues_(cues) {
+      const oldLength = this.length || 0;
+      let i = 0;
+      const l = cues.length;
+      this.cues_ = cues;
+      this.length_ = cues.length;
+      const defineProp = function (index) {
+        if (!('' + index in this)) {
+          Object.defineProperty(this, '' + index, {
+            get() {
+              return this.cues_[index];
+            }
+          });
+        }
+      };
+      if (oldLength < l) {
+        i = oldLength;
+        for (; i < l; i++) {
+          defineProp.call(this, i);
+        }
+      }
+    }
+
+    /**
+     * Get a `TextTrackCue` that is currently in the `TextTrackCueList` by id.
+     *
+     * @param {string} id
+     *        The id of the cue that should be searched for.
+     *
+     * @return {TextTrackCueList~TextTrackCue|null}
+     *         A single cue or null if none was found.
+     */
+    getCueById(id) {
+      let result = null;
+      for (let i = 0, l = this.length; i < l; i++) {
+        const cue = this[i];
+        if (cue.id === id) {
+          result = cue;
+          break;
+        }
+      }
+      return result;
+    }
+  }
+
+  /**
+   * @file track-kinds.js
+   */
+
+  /**
+   * All possible `VideoTrackKind`s
+   *
+   * @see https://html.spec.whatwg.org/multipage/embedded-content.html#dom-videotrack-kind
+   * @typedef VideoTrack~Kind
+   * @enum
+   */
+  const VideoTrackKind = {
+    alternative: 'alternative',
+    captions: 'captions',
+    main: 'main',
+    sign: 'sign',
+    subtitles: 'subtitles',
+    commentary: 'commentary'
+  };
+
+  /**
+   * All possible `AudioTrackKind`s
+   *
+   * @see https://html.spec.whatwg.org/multipage/embedded-content.html#dom-audiotrack-kind
+   * @typedef AudioTrack~Kind
+   * @enum
+   */
+  const AudioTrackKind = {
+    'alternative': 'alternative',
+    'descriptions': 'descriptions',
+    'main': 'main',
+    'main-desc': 'main-desc',
+    'translation': 'translation',
+    'commentary': 'commentary'
+  };
+
+  /**
+   * All possible `TextTrackKind`s
+   *
+   * @see https://html.spec.whatwg.org/multipage/embedded-content.html#dom-texttrack-kind
+   * @typedef TextTrack~Kind
+   * @enum
+   */
+  const TextTrackKind = {
+    subtitles: 'subtitles',
+    captions: 'captions',
+    descriptions: 'descriptions',
+    chapters: 'chapters',
+    metadata: 'metadata'
+  };
+
+  /**
+   * All possible `TextTrackMode`s
+   *
+   * @see https://html.spec.whatwg.org/multipage/embedded-content.html#texttrackmode
+   * @typedef TextTrack~Mode
+   * @enum
+   */
+  const TextTrackMode = {
+    disabled: 'disabled',
+    hidden: 'hidden',
+    showing: 'showing'
+  };
+
+  /**
+   * @file track.js
+   */
+
+  /**
+   * A Track class that contains all of the common functionality for {@link AudioTrack},
+   * {@link VideoTrack}, and {@link TextTrack}.
+   *
+   * > Note: This class should not be used directly
+   *
+   * @see {@link https://html.spec.whatwg.org/multipage/embedded-content.html}
+   * @extends EventTarget
+   * @abstract
+   */
+  class Track extends EventTarget$2 {
+    /**
+     * Create an instance of this class.
+     *
+     * @param {Object} [options={}]
+     *        Object of option names and values
+     *
+     * @param {string} [options.kind='']
+     *        A valid kind for the track type you are creating.
+     *
+     * @param {string} [options.id='vjs_track_' + Guid.newGUID()]
+     *        A unique id for this AudioTrack.
+     *
+     * @param {string} [options.label='']
+     *        The menu label for this track.
+     *
+     * @param {string} [options.language='']
+     *        A valid two character language code.
+     *
+     * @abstract
+     */
+    constructor(options = {}) {
+      super();
+      const trackProps = {
+        id: options.id || 'vjs_track_' + newGUID(),
+        kind: options.kind || '',
+        language: options.language || ''
+      };
+      let label = options.label || '';
+
+      /**
+       * @memberof Track
+       * @member {string} id
+       *         The id of this track. Cannot be changed after creation.
+       * @instance
+       *
+       * @readonly
+       */
+
+      /**
+       * @memberof Track
+       * @member {string} kind
+       *         The kind of track that this is. Cannot be changed after creation.
+       * @instance
+       *
+       * @readonly
+       */
+
+      /**
+       * @memberof Track
+       * @member {string} language
+       *         The two letter language code for this track. Cannot be changed after
+       *         creation.
+       * @instance
+       *
+       * @readonly
+       */
+
+      for (const key in trackProps) {
+        Object.defineProperty(this, key, {
+          get() {
+            return trackProps[key];
+          },
+          set() {}
+        });
+      }
+
+      /**
+       * @memberof Track
+       * @member {string} label
+       *         The label of this track. Cannot be changed after creation.
+       * @instance
+       *
+       * @fires Track#labelchange
+       */
+      Object.defineProperty(this, 'label', {
+        get() {
+          return label;
+        },
+        set(newLabel) {
+          if (newLabel !== label) {
+            label = newLabel;
+
+            /**
+             * An event that fires when label changes on this track.
+             *
+             * > Note: This is not part of the spec!
+             *
+             * @event Track#labelchange
+             * @type {Event}
+             */
+            this.trigger('labelchange');
+          }
+        }
+      });
+    }
+  }
+
+  /**
+   * @file url.js
+   * @module url
+   */
+
+  /**
+   * @typedef {Object} url:URLObject
+   *
+   * @property {string} protocol
+   *           The protocol of the url that was parsed.
+   *
+   * @property {string} hostname
+   *           The hostname of the url that was parsed.
+   *
+   * @property {string} port
+   *           The port of the url that was parsed.
+   *
+   * @property {string} pathname
+   *           The pathname of the url that was parsed.
+   *
+   * @property {string} search
+   *           The search query of the url that was parsed.
+   *
+   * @property {string} hash
+   *           The hash of the url that was parsed.
+   *
+   * @property {string} host
+   *           The host of the url that was parsed.
+   */
+
+  /**
+   * Resolve and parse the elements of a URL.
+   *
+   * @function
+   * @param    {String} url
+   *           The url to parse
+   *
+   * @return   {url:URLObject}
+   *           An object of url details
+   */
+  const parseUrl = function (url) {
+    // This entire method can be replace with URL once we are able to drop IE11
+
+    const props = ['protocol', 'hostname', 'port', 'pathname', 'search', 'hash', 'host'];
+
+    // add the url to an anchor and let the browser parse the URL
+    const a = document.createElement('a');
+    a.href = url;
+
+    // Copy the specific URL properties to a new object
+    // This is also needed for IE because the anchor loses its
+    // properties when it's removed from the dom
+    const details = {};
+    for (let i = 0; i < props.length; i++) {
+      details[props[i]] = a[props[i]];
+    }
+
+    // IE adds the port to the host property unlike everyone else. If
+    // a port identifier is added for standard ports, strip it.
+    if (details.protocol === 'http:') {
+      details.host = details.host.replace(/:80$/, '');
+    }
+    if (details.protocol === 'https:') {
+      details.host = details.host.replace(/:443$/, '');
+    }
+    if (!details.protocol) {
+      details.protocol = window.location.protocol;
+    }
+
+    /* istanbul ignore if */
+    if (!details.host) {
+      details.host = window.location.host;
+    }
+    return details;
+  };
+
+  /**
+   * Get absolute version of relative URL.
+   *
+   * @function
+   * @param    {string} url
+   *           URL to make absolute
+   *
+   * @return   {string}
+   *           Absolute URL
+   *
+   * @see      http://stackoverflow.com/questions/470832/getting-an-absolute-url-from-a-relative-one-ie6-issue
+   */
+  const getAbsoluteURL = function (url) {
+    // Check if absolute URL
+    if (!url.match(/^https?:\/\//)) {
+      // Add the url to an anchor and let the browser parse it to convert to an absolute url
+      const a = document.createElement('a');
+      a.href = url;
+      url = a.href;
+    }
+    return url;
+  };
+
+  /**
+   * Returns the extension of the passed file name. It will return an empty string
+   * if passed an invalid path.
+   *
+   * @function
+   * @param    {string} path
+   *           The fileName path like '/path/to/file.mp4'
+   *
+   * @return  {string}
+   *           The extension in lower case or an empty string if no
+   *           extension could be found.
+   */
+  const getFileExtension = function (path) {
+    if (typeof path === 'string') {
+      const splitPathRe = /^(\/?)([\s\S]*?)((?:\.{1,2}|[^\/]+?)(\.([^\.\/\?]+)))(?:[\/]*|[\?].*)$/;
+      const pathParts = splitPathRe.exec(path);
+      if (pathParts) {
+        return pathParts.pop().toLowerCase();
+      }
+    }
+    return '';
+  };
+
+  /**
+   * Returns whether the url passed is a cross domain request or not.
+   *
+   * @function
+   * @param    {string} url
+   *           The url to check.
+   *
+   * @param    {Object} [winLoc]
+   *           the domain to check the url against, defaults to window.location
+   *
+   * @param    {string} [winLoc.protocol]
+   *           The window location protocol defaults to window.location.protocol
+   *
+   * @param    {string} [winLoc.host]
+   *           The window location host defaults to window.location.host
+   *
+   * @return   {boolean}
+   *           Whether it is a cross domain request or not.
+   */
+  const isCrossOrigin = function (url, winLoc = window.location) {
+    const urlInfo = parseUrl(url);
+
+    // IE8 protocol relative urls will return ':' for protocol
+    const srcProtocol = urlInfo.protocol === ':' ? winLoc.protocol : urlInfo.protocol;
+
+    // Check if url is for another domain/origin
+    // IE8 doesn't know location.origin, so we won't rely on it here
+    const crossOrigin = srcProtocol + urlInfo.host !== winLoc.protocol + winLoc.host;
+    return crossOrigin;
+  };
+
+  var Url = /*#__PURE__*/Object.freeze({
+    __proto__: null,
+    parseUrl: parseUrl,
+    getAbsoluteURL: getAbsoluteURL,
+    getFileExtension: getFileExtension,
+    isCrossOrigin: isCrossOrigin
+  });
+
+  var win;
+  if (typeof window !== "undefined") {
+    win = window;
+  } else if (typeof commonjsGlobal !== "undefined") {
+    win = commonjsGlobal;
+  } else if (typeof self !== "undefined") {
+    win = self;
+  } else {
+    win = {};
+  }
+  var window_1 = win;
+
+  var _extends_1 = createCommonjsModule(function (module) {
+    function _extends() {
+      module.exports = _extends = Object.assign ? Object.assign.bind() : function (target) {
+        for (var i = 1; i < arguments.length; i++) {
+          var source = arguments[i];
+          for (var key in source) {
+            if (Object.prototype.hasOwnProperty.call(source, key)) {
+              target[key] = source[key];
+            }
+          }
+        }
+        return target;
+      }, module.exports.__esModule = true, module.exports["default"] = module.exports;
+      return _extends.apply(this, arguments);
+    }
+    module.exports = _extends, module.exports.__esModule = true, module.exports["default"] = module.exports;
+  });
+  var _extends$1 = unwrapExports(_extends_1);
+
+  var isFunction_1 = isFunction;
+  var toString = Object.prototype.toString;
+  function isFunction(fn) {
+    if (!fn) {
+      return false;
+    }
+    var string = toString.call(fn);
+    return string === '[object Function]' || typeof fn === 'function' && string !== '[object RegExp]' || typeof window !== 'undefined' && (
+    // IE8 and below
+    fn === window.setTimeout || fn === window.alert || fn === window.confirm || fn === window.prompt);
+  }
+
+  var httpResponseHandler = function httpResponseHandler(callback, decodeResponseBody) {
+    if (decodeResponseBody === void 0) {
+      decodeResponseBody = false;
+    }
+    return function (err, response, responseBody) {
+      // if the XHR failed, return that error
+      if (err) {
+        callback(err);
+        return;
+      } // if the HTTP status code is 4xx or 5xx, the request also failed
+
+      if (response.statusCode >= 400 && response.statusCode <= 599) {
+        var cause = responseBody;
+        if (decodeResponseBody) {
+          if (window_1.TextDecoder) {
+            var charset = getCharset(response.headers && response.headers['content-type']);
+            try {
+              cause = new TextDecoder(charset).decode(responseBody);
+            } catch (e) {}
+          } else {
+            cause = String.fromCharCode.apply(null, new Uint8Array(responseBody));
+          }
+        }
+        callback({
+          cause: cause
+        });
+        return;
+      } // otherwise, request succeeded
+
+      callback(null, responseBody);
+    };
+  };
+  function getCharset(contentTypeHeader) {
+    if (contentTypeHeader === void 0) {
+      contentTypeHeader = '';
+    }
+    return contentTypeHeader.toLowerCase().split(';').reduce(function (charset, contentType) {
+      var _contentType$split = contentType.split('='),
+        type = _contentType$split[0],
+        value = _contentType$split[1];
+      if (type.trim() === 'charset') {
+        return value.trim();
+      }
+      return charset;
+    }, 'utf-8');
+  }
+  var httpHandler = httpResponseHandler;
+
+  createXHR.httpHandler = httpHandler;
+  /**
+   * @license
+   * slighly modified parse-headers 2.0.2 <https://github.com/kesla/parse-headers/>
+   * Copyright (c) 2014 David Björklund
+   * Available under the MIT license
+   * <https://github.com/kesla/parse-headers/blob/master/LICENCE>
+   */
+
+  var parseHeaders = function parseHeaders(headers) {
+    var result = {};
+    if (!headers) {
+      return result;
+    }
+    headers.trim().split('\n').forEach(function (row) {
+      var index = row.indexOf(':');
+      var key = row.slice(0, index).trim().toLowerCase();
+      var value = row.slice(index + 1).trim();
+      if (typeof result[key] === 'undefined') {
+        result[key] = value;
+      } else if (Array.isArray(result[key])) {
+        result[key].push(value);
+      } else {
+        result[key] = [result[key], value];
+      }
+    });
+    return result;
+  };
+  var lib = createXHR; // Allow use of default import syntax in TypeScript
+
+  var default_1 = createXHR;
+  createXHR.XMLHttpRequest = window_1.XMLHttpRequest || noop$1;
+  createXHR.XDomainRequest = "withCredentials" in new createXHR.XMLHttpRequest() ? createXHR.XMLHttpRequest : window_1.XDomainRequest;
+  forEachArray(["get", "put", "post", "patch", "head", "delete"], function (method) {
+    createXHR[method === "delete" ? "del" : method] = function (uri, options, callback) {
+      options = initParams(uri, options, callback);
+      options.method = method.toUpperCase();
+      return _createXHR(options);
+    };
+  });
+  function forEachArray(array, iterator) {
+    for (var i = 0; i < array.length; i++) {
+      iterator(array[i]);
+    }
+  }
+  function isEmpty(obj) {
+    for (var i in obj) {
+      if (obj.hasOwnProperty(i)) return false;
+    }
+    return true;
+  }
+  function initParams(uri, options, callback) {
+    var params = uri;
+    if (isFunction_1(options)) {
+      callback = options;
+      if (typeof uri === "string") {
+        params = {
+          uri: uri
+        };
+      }
+    } else {
+      params = _extends_1({}, options, {
+        uri: uri
+      });
+    }
+    params.callback = callback;
+    return params;
+  }
+  function createXHR(uri, options, callback) {
+    options = initParams(uri, options, callback);
+    return _createXHR(options);
+  }
+  function _createXHR(options) {
+    if (typeof options.callback === "undefined") {
+      throw new Error("callback argument missing");
+    }
+    var called = false;
+    var callback = function cbOnce(err, response, body) {
+      if (!called) {
+        called = true;
+        options.callback(err, response, body);
+      }
+    };
+    function readystatechange() {
+      if (xhr.readyState === 4) {
+        setTimeout(loadFunc, 0);
+      }
+    }
+    function getBody() {
+      // Chrome with requestType=blob throws errors arround when even testing access to responseText
+      var body = undefined;
+      if (xhr.response) {
+        body = xhr.response;
+      } else {
+        body = xhr.responseText || getXml(xhr);
+      }
+      if (isJson) {
+        try {
+          body = JSON.parse(body);
+        } catch (e) {}
+      }
+      return body;
+    }
+    function errorFunc(evt) {
+      clearTimeout(timeoutTimer);
+      if (!(evt instanceof Error)) {
+        evt = new Error("" + (evt || "Unknown XMLHttpRequest Error"));
+      }
+      evt.statusCode = 0;
+      return callback(evt, failureResponse);
+    } // will load the data & process the response in a special response object
+
+    function loadFunc() {
+      if (aborted) return;
+      var status;
+      clearTimeout(timeoutTimer);
+      if (options.useXDR && xhr.status === undefined) {
+        //IE8 CORS GET successful response doesn't have a status field, but body is fine
+        status = 200;
+      } else {
+        status = xhr.status === 1223 ? 204 : xhr.status;
+      }
+      var response = failureResponse;
+      var err = null;
+      if (status !== 0) {
+        response = {
+          body: getBody(),
+          statusCode: status,
+          method: method,
+          headers: {},
+          url: uri,
+          rawRequest: xhr
+        };
+        if (xhr.getAllResponseHeaders) {
+          //remember xhr can in fact be XDR for CORS in IE
+          response.headers = parseHeaders(xhr.getAllResponseHeaders());
+        }
+      } else {
+        err = new Error("Internal XMLHttpRequest Error");
+      }
+      return callback(err, response, response.body);
+    }
+    var xhr = options.xhr || null;
+    if (!xhr) {
+      if (options.cors || options.useXDR) {
+        xhr = new createXHR.XDomainRequest();
+      } else {
+        xhr = new createXHR.XMLHttpRequest();
+      }
+    }
+    var key;
+    var aborted;
+    var uri = xhr.url = options.uri || options.url;
+    var method = xhr.method = options.method || "GET";
+    var body = options.body || options.data;
+    var headers = xhr.headers = options.headers || {};
+    var sync = !!options.sync;
+    var isJson = false;
+    var timeoutTimer;
+    var failureResponse = {
+      body: undefined,
+      headers: {},
+      statusCode: 0,
+      method: method,
+      url: uri,
+      rawRequest: xhr
+    };
+    if ("json" in options && options.json !== false) {
+      isJson = true;
+      headers["accept"] || headers["Accept"] || (headers["Accept"] = "application/json"); //Don't override existing accept header declared by user
+
+      if (method !== "GET" && method !== "HEAD") {
+        headers["content-type"] || headers["Content-Type"] || (headers["Content-Type"] = "application/json"); //Don't override existing accept header declared by user
+
+        body = JSON.stringify(options.json === true ? body : options.json);
+      }
+    }
+    xhr.onreadystatechange = readystatechange;
+    xhr.onload = loadFunc;
+    xhr.onerror = errorFunc; // IE9 must have onprogress be set to a unique function.
+
+    xhr.onprogress = function () {// IE must die
+    };
+    xhr.onabort = function () {
+      aborted = true;
+    };
+    xhr.ontimeout = errorFunc;
+    xhr.open(method, uri, !sync, options.username, options.password); //has to be after open
+
+    if (!sync) {
+      xhr.withCredentials = !!options.withCredentials;
+    } // Cannot set timeout with sync request
+    // not setting timeout on the xhr object, because of old webkits etc. not handling that correctly
+    // both npm's request and jquery 1.x use this kind of timeout, so this is being consistent
+
+    if (!sync && options.timeout > 0) {
+      timeoutTimer = setTimeout(function () {
+        if (aborted) return;
+        aborted = true; //IE9 may still call readystatechange
+
+        xhr.abort("timeout");
+        var e = new Error("XMLHttpRequest timeout");
+        e.code = "ETIMEDOUT";
+        errorFunc(e);
+      }, options.timeout);
+    }
+    if (xhr.setRequestHeader) {
+      for (key in headers) {
+        if (headers.hasOwnProperty(key)) {
+          xhr.setRequestHeader(key, headers[key]);
+        }
+      }
+    } else if (options.headers && !isEmpty(options.headers)) {
+      throw new Error("Headers cannot be set on an XDomainRequest object");
+    }
+    if ("responseType" in options) {
+      xhr.responseType = options.responseType;
+    }
+    if ("beforeSend" in options && typeof options.beforeSend === "function") {
+      options.beforeSend(xhr);
+    } // Microsoft Edge browser sends "undefined" when send is called with undefined value.
+    // XMLHttpRequest spec says to pass null as body to indicate no body
+    // See https://github.com/naugtur/xhr/issues/100.
+
+    xhr.send(body || null);
+    return xhr;
+  }
+  function getXml(xhr) {
+    // xhr.responseXML will throw Exception "InvalidStateError" or "DOMException"
+    // See https://developer.mozilla.org/en-US/docs/Web/API/XMLHttpRequest/responseXML.
+    try {
+      if (xhr.responseType === "document") {
+        return xhr.responseXML;
+      }
+      var firefoxBugTakenEffect = xhr.responseXML && xhr.responseXML.documentElement.nodeName === "parsererror";
+      if (xhr.responseType === "" && !firefoxBugTakenEffect) {
+        return xhr.responseXML;
+      }
+    } catch (e) {}
+    return null;
+  }
+  function noop$1() {}
+  lib.default = default_1;
+
+  /**
+   * @file text-track.js
+   */
+
+  /**
+   * Takes a webvtt file contents and parses it into cues
+   *
+   * @param {string} srcContent
+   *        webVTT file contents
+   *
+   * @param {TextTrack} track
+   *        TextTrack to add cues to. Cues come from the srcContent.
+   *
+   * @private
+   */
+  const parseCues = function (srcContent, track) {
+    const parser = new window.WebVTT.Parser(window, window.vttjs, window.WebVTT.StringDecoder());
+    const errors = [];
+    parser.oncue = function (cue) {
+      track.addCue(cue);
+    };
+    parser.onparsingerror = function (error) {
+      errors.push(error);
+    };
+    parser.onflush = function () {
+      track.trigger({
+        type: 'loadeddata',
+        target: track
+      });
+    };
+    parser.parse(srcContent);
+    if (errors.length > 0) {
+      if (window.console && window.console.groupCollapsed) {
+        window.console.groupCollapsed(`Text Track parsing errors for ${track.src}`);
+      }
+      errors.forEach(error => log$1.error(error));
+      if (window.console && window.console.groupEnd) {
+        window.console.groupEnd();
+      }
+    }
+    parser.flush();
+  };
+
+  /**
+   * Load a `TextTrack` from a specified url.
+   *
+   * @param {string} src
+   *        Url to load track from.
+   *
+   * @param {TextTrack} track
+   *        Track to add cues to. Comes from the content at the end of `url`.
+   *
+   * @private
+   */
+  const loadTrack = function (src, track) {
+    const opts = {
+      uri: src
+    };
+    const crossOrigin = isCrossOrigin(src);
+    if (crossOrigin) {
+      opts.cors = crossOrigin;
+    }
+    const withCredentials = track.tech_.crossOrigin() === 'use-credentials';
+    if (withCredentials) {
+      opts.withCredentials = withCredentials;
+    }
+    lib(opts, bind_(this, function (err, response, responseBody) {
+      if (err) {
+        return log$1.error(err, response);
+      }
+      track.loaded_ = true;
+
+      // Make sure that vttjs has loaded, otherwise, wait till it finished loading
+      // NOTE: this is only used for the alt/video.novtt.js build
+      if (typeof window.WebVTT !== 'function') {
+        if (track.tech_) {
+          // to prevent use before define eslint error, we define loadHandler
+          // as a let here
+          track.tech_.any(['vttjsloaded', 'vttjserror'], event => {
+            if (event.type === 'vttjserror') {
+              log$1.error(`vttjs failed to load, stopping trying to process ${track.src}`);
+              return;
+            }
+            return parseCues(responseBody, track);
+          });
+        }
+      } else {
+        parseCues(responseBody, track);
+      }
+    }));
+  };
+
+  /**
+   * A representation of a single `TextTrack`.
+   *
+   * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#texttrack}
+   * @extends Track
+   */
+  class TextTrack extends Track {
+    /**
+     * Create an instance of this class.
+     *
+     * @param {Object} options={}
+     *        Object of option names and values
+     *
+     * @param { import('../tech/tech').default } options.tech
+     *        A reference to the tech that owns this TextTrack.
+     *
+     * @param {TextTrack~Kind} [options.kind='subtitles']
+     *        A valid text track kind.
+     *
+     * @param {TextTrack~Mode} [options.mode='disabled']
+     *        A valid text track mode.
+     *
+     * @param {string} [options.id='vjs_track_' + Guid.newGUID()]
+     *        A unique id for this TextTrack.
+     *
+     * @param {string} [options.label='']
+     *        The menu label for this track.
+     *
+     * @param {string} [options.language='']
+     *        A valid two character language code.
+     *
+     * @param {string} [options.srclang='']
+     *        A valid two character language code. An alternative, but deprioritized
+     *        version of `options.language`
+     *
+     * @param {string} [options.src]
+     *        A url to TextTrack cues.
+     *
+     * @param {boolean} [options.default]
+     *        If this track should default to on or off.
+     */
+    constructor(options = {}) {
+      if (!options.tech) {
+        throw new Error('A tech was not provided.');
+      }
+      const settings = merge$2(options, {
+        kind: TextTrackKind[options.kind] || 'subtitles',
+        language: options.language || options.srclang || ''
+      });
+      let mode = TextTrackMode[settings.mode] || 'disabled';
+      const default_ = settings.default;
+      if (settings.kind === 'metadata' || settings.kind === 'chapters') {
+        mode = 'hidden';
+      }
+      super(settings);
+      this.tech_ = settings.tech;
+      this.cues_ = [];
+      this.activeCues_ = [];
+      this.preload_ = this.tech_.preloadTextTracks !== false;
+      const cues = new TextTrackCueList(this.cues_);
+      const activeCues = new TextTrackCueList(this.activeCues_);
+      let changed = false;
+      this.timeupdateHandler = bind_(this, function (event = {}) {
+        if (this.tech_.isDisposed()) {
+          return;
+        }
+        if (!this.tech_.isReady_) {
+          if (event.type !== 'timeupdate') {
+            this.rvf_ = this.tech_.requestVideoFrameCallback(this.timeupdateHandler);
+          }
+          return;
+        }
+
+        // Accessing this.activeCues for the side-effects of updating itself
+        // due to its nature as a getter function. Do not remove or cues will
+        // stop updating!
+        // Use the setter to prevent deletion from uglify (pure_getters rule)
+        this.activeCues = this.activeCues;
+        if (changed) {
+          this.trigger('cuechange');
+          changed = false;
+        }
+        if (event.type !== 'timeupdate') {
+          this.rvf_ = this.tech_.requestVideoFrameCallback(this.timeupdateHandler);
+        }
+      });
+      const disposeHandler = () => {
+        this.stopTracking();
+      };
+      this.tech_.one('dispose', disposeHandler);
+      if (mode !== 'disabled') {
+        this.startTracking();
+      }
+      Object.defineProperties(this, {
+        /**
+         * @memberof TextTrack
+         * @member {boolean} default
+         *         If this track was set to be on or off by default. Cannot be changed after
+         *         creation.
+         * @instance
+         *
+         * @readonly
+         */
+        default: {
+          get() {
+            return default_;
+          },
+          set() {}
+        },
+        /**
+         * @memberof TextTrack
+         * @member {string} mode
+         *         Set the mode of this TextTrack to a valid {@link TextTrack~Mode}. Will
+         *         not be set if setting to an invalid mode.
+         * @instance
+         *
+         * @fires TextTrack#modechange
+         */
+        mode: {
+          get() {
+            return mode;
+          },
+          set(newMode) {
+            if (!TextTrackMode[newMode]) {
+              return;
+            }
+            if (mode === newMode) {
+              return;
+            }
+            mode = newMode;
+            if (!this.preload_ && mode !== 'disabled' && this.cues.length === 0) {
+              // On-demand load.
+              loadTrack(this.src, this);
+            }
+            this.stopTracking();
+            if (mode !== 'disabled') {
+              this.startTracking();
+            }
+            /**
+             * An event that fires when mode changes on this track. This allows
+             * the TextTrackList that holds this track to act accordingly.
+             *
+             * > Note: This is not part of the spec!
+             *
+             * @event TextTrack#modechange
+             * @type {Event}
+             */
+            this.trigger('modechange');
+          }
+        },
+        /**
+         * @memberof TextTrack
+         * @member {TextTrackCueList} cues
+         *         The text track cue list for this TextTrack.
+         * @instance
+         */
+        cues: {
+          get() {
+            if (!this.loaded_) {
+              return null;
+            }
+            return cues;
+          },
+          set() {}
+        },
+        /**
+         * @memberof TextTrack
+         * @member {TextTrackCueList} activeCues
+         *         The list text track cues that are currently active for this TextTrack.
+         * @instance
+         */
+        activeCues: {
+          get() {
+            if (!this.loaded_) {
+              return null;
+            }
+
+            // nothing to do
+            if (this.cues.length === 0) {
+              return activeCues;
+            }
+            const ct = this.tech_.currentTime();
+            const active = [];
+            for (let i = 0, l = this.cues.length; i < l; i++) {
+              const cue = this.cues[i];
+              if (cue.startTime <= ct && cue.endTime >= ct) {
+                active.push(cue);
+              }
+            }
+            changed = false;
+            if (active.length !== this.activeCues_.length) {
+              changed = true;
+            } else {
+              for (let i = 0; i < active.length; i++) {
+                if (this.activeCues_.indexOf(active[i]) === -1) {
+                  changed = true;
+                }
+              }
+            }
+            this.activeCues_ = active;
+            activeCues.setCues_(this.activeCues_);
+            return activeCues;
+          },
+          // /!\ Keep this setter empty (see the timeupdate handler above)
+          set() {}
+        }
+      });
+      if (settings.src) {
+        this.src = settings.src;
+        if (!this.preload_) {
+          // Tracks will load on-demand.
+          // Act like we're loaded for other purposes.
+          this.loaded_ = true;
+        }
+        if (this.preload_ || settings.kind !== 'subtitles' && settings.kind !== 'captions') {
+          loadTrack(this.src, this);
+        }
+      } else {
+        this.loaded_ = true;
+      }
+    }
+    startTracking() {
+      // More precise cues based on requestVideoFrameCallback with a requestAnimationFram fallback
+      this.rvf_ = this.tech_.requestVideoFrameCallback(this.timeupdateHandler);
+      // Also listen to timeupdate in case rVFC/rAF stops (window in background, audio in video el)
+      this.tech_.on('timeupdate', this.timeupdateHandler);
+    }
+    stopTracking() {
+      if (this.rvf_) {
+        this.tech_.cancelVideoFrameCallback(this.rvf_);
+        this.rvf_ = undefined;
+      }
+      this.tech_.off('timeupdate', this.timeupdateHandler);
+    }
+
+    /**
+     * Add a cue to the internal list of cues.
+     *
+     * @param {TextTrack~Cue} cue
+     *        The cue to add to our internal list
+     */
+    addCue(originalCue) {
+      let cue = originalCue;
+
+      // Testing if the cue is a VTTCue in a way that survives minification
+      if (!('getCueAsHTML' in cue)) {
+        cue = new window.vttjs.VTTCue(originalCue.startTime, originalCue.endTime, originalCue.text);
+        for (const prop in originalCue) {
+          if (!(prop in cue)) {
+            cue[prop] = originalCue[prop];
+          }
+        }
+
+        // make sure that `id` is copied over
+        cue.id = originalCue.id;
+        cue.originalCue_ = originalCue;
+      }
+      const tracks = this.tech_.textTracks();
+      for (let i = 0; i < tracks.length; i++) {
+        if (tracks[i] !== this) {
+          tracks[i].removeCue(cue);
+        }
+      }
+      this.cues_.push(cue);
+      this.cues.setCues_(this.cues_);
+    }
+
+    /**
+     * Remove a cue from our internal list
+     *
+     * @param {TextTrack~Cue} removeCue
+     *        The cue to remove from our internal list
+     */
+    removeCue(removeCue) {
+      let i = this.cues_.length;
+      while (i--) {
+        const cue = this.cues_[i];
+        if (cue === removeCue || cue.originalCue_ && cue.originalCue_ === removeCue) {
+          this.cues_.splice(i, 1);
+          this.cues.setCues_(this.cues_);
+          break;
+        }
+      }
+    }
+  }
+
+  /**
+   * cuechange - One or more cues in the track have become active or stopped being active.
+   * @protected
+   */
+  TextTrack.prototype.allowedEvents_ = {
+    cuechange: 'cuechange'
+  };
+
+  /**
+   * A representation of a single `AudioTrack`. If it is part of an {@link AudioTrackList}
+   * only one `AudioTrack` in the list will be enabled at a time.
+   *
+   * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#audiotrack}
+   * @extends Track
+   */
+  class AudioTrack extends Track {
+    /**
+     * Create an instance of this class.
+     *
+     * @param {Object} [options={}]
+     *        Object of option names and values
+     *
+     * @param {AudioTrack~Kind} [options.kind='']
+     *        A valid audio track kind
+     *
+     * @param {string} [options.id='vjs_track_' + Guid.newGUID()]
+     *        A unique id for this AudioTrack.
+     *
+     * @param {string} [options.label='']
+     *        The menu label for this track.
+     *
+     * @param {string} [options.language='']
+     *        A valid two character language code.
+     *
+     * @param {boolean} [options.enabled]
+     *        If this track is the one that is currently playing. If this track is part of
+     *        an {@link AudioTrackList}, only one {@link AudioTrack} will be enabled.
+     */
+    constructor(options = {}) {
+      const settings = merge$2(options, {
+        kind: AudioTrackKind[options.kind] || ''
+      });
+      super(settings);
+      let enabled = false;
+
+      /**
+       * @memberof AudioTrack
+       * @member {boolean} enabled
+       *         If this `AudioTrack` is enabled or not. When setting this will
+       *         fire {@link AudioTrack#enabledchange} if the state of enabled is changed.
+       * @instance
+       *
+       * @fires VideoTrack#selectedchange
+       */
+      Object.defineProperty(this, 'enabled', {
+        get() {
+          return enabled;
+        },
+        set(newEnabled) {
+          // an invalid or unchanged value
+          if (typeof newEnabled !== 'boolean' || newEnabled === enabled) {
+            return;
+          }
+          enabled = newEnabled;
+
+          /**
+           * An event that fires when enabled changes on this track. This allows
+           * the AudioTrackList that holds this track to act accordingly.
+           *
+           * > Note: This is not part of the spec! Native tracks will do
+           *         this internally without an event.
+           *
+           * @event AudioTrack#enabledchange
+           * @type {Event}
+           */
+          this.trigger('enabledchange');
+        }
+      });
+
+      // if the user sets this track to selected then
+      // set selected to that true value otherwise
+      // we keep it false
+      if (settings.enabled) {
+        this.enabled = settings.enabled;
+      }
+      this.loaded_ = true;
+    }
+  }
+
+  /**
+   * A representation of a single `VideoTrack`.
+   *
+   * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#videotrack}
+   * @extends Track
+   */
+  class VideoTrack extends Track {
+    /**
+     * Create an instance of this class.
+     *
+     * @param {Object} [options={}]
+     *        Object of option names and values
+     *
+     * @param {string} [options.kind='']
+     *        A valid {@link VideoTrack~Kind}
+     *
+     * @param {string} [options.id='vjs_track_' + Guid.newGUID()]
+     *        A unique id for this AudioTrack.
+     *
+     * @param {string} [options.label='']
+     *        The menu label for this track.
+     *
+     * @param {string} [options.language='']
+     *        A valid two character language code.
+     *
+     * @param {boolean} [options.selected]
+     *        If this track is the one that is currently playing.
+     */
+    constructor(options = {}) {
+      const settings = merge$2(options, {
+        kind: VideoTrackKind[options.kind] || ''
+      });
+      super(settings);
+      let selected = false;
+
+      /**
+       * @memberof VideoTrack
+       * @member {boolean} selected
+       *         If this `VideoTrack` is selected or not. When setting this will
+       *         fire {@link VideoTrack#selectedchange} if the state of selected changed.
+       * @instance
+       *
+       * @fires VideoTrack#selectedchange
+       */
+      Object.defineProperty(this, 'selected', {
+        get() {
+          return selected;
+        },
+        set(newSelected) {
+          // an invalid or unchanged value
+          if (typeof newSelected !== 'boolean' || newSelected === selected) {
+            return;
+          }
+          selected = newSelected;
+
+          /**
+           * An event that fires when selected changes on this track. This allows
+           * the VideoTrackList that holds this track to act accordingly.
+           *
+           * > Note: This is not part of the spec! Native tracks will do
+           *         this internally without an event.
+           *
+           * @event VideoTrack#selectedchange
+           * @type {Event}
+           */
+          this.trigger('selectedchange');
+        }
+      });
+
+      // if the user sets this track to selected then
+      // set selected to that true value otherwise
+      // we keep it false
+      if (settings.selected) {
+        this.selected = settings.selected;
+      }
+    }
+  }
+
+  /**
+   * @file html-track-element.js
+   */
+
+  /**
+   * A single track represented in the DOM.
+   *
+   * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#htmltrackelement}
+   * @extends EventTarget
+   */
+  class HTMLTrackElement extends EventTarget$2 {
+    /**
+     * Create an instance of this class.
+     *
+     * @param {Object} options={}
+     *        Object of option names and values
+     *
+     * @param { import('../tech/tech').default } options.tech
+     *        A reference to the tech that owns this HTMLTrackElement.
+     *
+     * @param {TextTrack~Kind} [options.kind='subtitles']
+     *        A valid text track kind.
+     *
+     * @param {TextTrack~Mode} [options.mode='disabled']
+     *        A valid text track mode.
+     *
+     * @param {string} [options.id='vjs_track_' + Guid.newGUID()]
+     *        A unique id for this TextTrack.
+     *
+     * @param {string} [options.label='']
+     *        The menu label for this track.
+     *
+     * @param {string} [options.language='']
+     *        A valid two character language code.
+     *
+     * @param {string} [options.srclang='']
+     *        A valid two character language code. An alternative, but deprioritized
+     *        version of `options.language`
+     *
+     * @param {string} [options.src]
+     *        A url to TextTrack cues.
+     *
+     * @param {boolean} [options.default]
+     *        If this track should default to on or off.
+     */
+    constructor(options = {}) {
+      super();
+      let readyState;
+      const track = new TextTrack(options);
+      this.kind = track.kind;
+      this.src = track.src;
+      this.srclang = track.language;
+      this.label = track.label;
+      this.default = track.default;
+      Object.defineProperties(this, {
+        /**
+         * @memberof HTMLTrackElement
+         * @member {HTMLTrackElement~ReadyState} readyState
+         *         The current ready state of the track element.
+         * @instance
+         */
+        readyState: {
+          get() {
+            return readyState;
+          }
+        },
+        /**
+         * @memberof HTMLTrackElement
+         * @member {TextTrack} track
+         *         The underlying TextTrack object.
+         * @instance
+         *
+         */
+        track: {
+          get() {
+            return track;
+          }
+        }
+      });
+      readyState = HTMLTrackElement.NONE;
+
+      /**
+       * @listens TextTrack#loadeddata
+       * @fires HTMLTrackElement#load
+       */
+      track.addEventListener('loadeddata', () => {
+        readyState = HTMLTrackElement.LOADED;
+        this.trigger({
+          type: 'load',
+          target: this
+        });
+      });
+    }
+  }
+
+  /**
+   * @protected
+   */
+  HTMLTrackElement.prototype.allowedEvents_ = {
+    load: 'load'
+  };
+
+  /**
+   * The text track not loaded state.
+   *
+   * @type {number}
+   * @static
+   */
+  HTMLTrackElement.NONE = 0;
+
+  /**
+   * The text track loading state.
+   *
+   * @type {number}
+   * @static
+   */
+  HTMLTrackElement.LOADING = 1;
+
+  /**
+   * The text track loaded state.
+   *
+   * @type {number}
+   * @static
+   */
+  HTMLTrackElement.LOADED = 2;
+
+  /**
+   * The text track failed to load state.
+   *
+   * @type {number}
+   * @static
+   */
+  HTMLTrackElement.ERROR = 3;
+
+  /*
+   * This file contains all track properties that are used in
+   * player.js, tech.js, html5.js and possibly other techs in the future.
+   */
+
+  const NORMAL = {
+    audio: {
+      ListClass: AudioTrackList,
+      TrackClass: AudioTrack,
+      capitalName: 'Audio'
+    },
+    video: {
+      ListClass: VideoTrackList,
+      TrackClass: VideoTrack,
+      capitalName: 'Video'
+    },
+    text: {
+      ListClass: TextTrackList,
+      TrackClass: TextTrack,
+      capitalName: 'Text'
+    }
+  };
+  Object.keys(NORMAL).forEach(function (type) {
+    NORMAL[type].getterName = `${type}Tracks`;
+    NORMAL[type].privateName = `${type}Tracks_`;
+  });
+  const REMOTE = {
+    remoteText: {
+      ListClass: TextTrackList,
+      TrackClass: TextTrack,
+      capitalName: 'RemoteText',
+      getterName: 'remoteTextTracks',
+      privateName: 'remoteTextTracks_'
+    },
+    remoteTextEl: {
+      ListClass: HtmlTrackElementList,
+      TrackClass: HTMLTrackElement,
+      capitalName: 'RemoteTextTrackEls',
+      getterName: 'remoteTextTrackEls',
+      privateName: 'remoteTextTrackEls_'
+    }
+  };
+  const ALL = Object.assign({}, NORMAL, REMOTE);
+  REMOTE.names = Object.keys(REMOTE);
+  NORMAL.names = Object.keys(NORMAL);
+  ALL.names = [].concat(REMOTE.names).concat(NORMAL.names);
+
+  var minDoc = {};
+
+  var topLevel = typeof commonjsGlobal !== 'undefined' ? commonjsGlobal : typeof window !== 'undefined' ? window : {};
+  var doccy;
+  if (typeof document !== 'undefined') {
+    doccy = document;
+  } else {
+    doccy = topLevel['__GLOBAL_DOCUMENT_CACHE@4'];
+    if (!doccy) {
+      doccy = topLevel['__GLOBAL_DOCUMENT_CACHE@4'] = minDoc;
+    }
+  }
+  var document_1 = doccy;
+
+  /**
+   * Copyright 2013 vtt.js Contributors
+   *
+   * Licensed under the Apache License, Version 2.0 (the "License");
+   * you may not use this file except in compliance with the License.
+   * You may obtain a copy of the License at
+   *
+   *   http://www.apache.org/licenses/LICENSE-2.0
+   *
+   * Unless required by applicable law or agreed to in writing, software
+   * distributed under the License is distributed on an "AS IS" BASIS,
+   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   * See the License for the specific language governing permissions and
+   * limitations under the License.
+   */
+
+  /* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+  /* vim: set shiftwidth=2 tabstop=2 autoindent cindent expandtab: */
+
+  var _objCreate = Object.create || function () {
+    function F() {}
+    return function (o) {
+      if (arguments.length !== 1) {
+        throw new Error('Object.create shim only accepts one parameter.');
+      }
+      F.prototype = o;
+      return new F();
+    };
+  }();
+
+  // Creates a new ParserError object from an errorData object. The errorData
+  // object should have default code and message properties. The default message
+  // property can be overriden by passing in a message parameter.
+  // See ParsingError.Errors below for acceptable errors.
+  function ParsingError(errorData, message) {
+    this.name = "ParsingError";
+    this.code = errorData.code;
+    this.message = message || errorData.message;
+  }
+  ParsingError.prototype = _objCreate(Error.prototype);
+  ParsingError.prototype.constructor = ParsingError;
+
+  // ParsingError metadata for acceptable ParsingErrors.
+  ParsingError.Errors = {
+    BadSignature: {
+      code: 0,
+      message: "Malformed WebVTT signature."
+    },
+    BadTimeStamp: {
+      code: 1,
+      message: "Malformed time stamp."
+    }
+  };
+
+  // Try to parse input as a time stamp.
+  function parseTimeStamp(input) {
+    function computeSeconds(h, m, s, f) {
+      return (h | 0) * 3600 + (m | 0) * 60 + (s | 0) + (f | 0) / 1000;
+    }
+    var m = input.match(/^(\d+):(\d{1,2})(:\d{1,2})?\.(\d{3})/);
+    if (!m) {
+      return null;
+    }
+    if (m[3]) {
+      // Timestamp takes the form of [hours]:[minutes]:[seconds].[milliseconds]
+      return computeSeconds(m[1], m[2], m[3].replace(":", ""), m[4]);
+    } else if (m[1] > 59) {
+      // Timestamp takes the form of [hours]:[minutes].[milliseconds]
+      // First position is hours as it's over 59.
+      return computeSeconds(m[1], m[2], 0, m[4]);
+    } else {
+      // Timestamp takes the form of [minutes]:[seconds].[milliseconds]
+      return computeSeconds(0, m[1], m[2], m[4]);
+    }
+  }
+
+  // A settings object holds key/value pairs and will ignore anything but the first
+  // assignment to a specific key.
+  function Settings() {
+    this.values = _objCreate(null);
+  }
+  Settings.prototype = {
+    // Only accept the first assignment to any key.
+    set: function (k, v) {
+      if (!this.get(k) && v !== "") {
+        this.values[k] = v;
+      }
+    },
+    // Return the value for a key, or a default value.
+    // If 'defaultKey' is passed then 'dflt' is assumed to be an object with
+    // a number of possible default values as properties where 'defaultKey' is
+    // the key of the property that will be chosen; otherwise it's assumed to be
+    // a single value.
+    get: function (k, dflt, defaultKey) {
+      if (defaultKey) {
+        return this.has(k) ? this.values[k] : dflt[defaultKey];
+      }
+      return this.has(k) ? this.values[k] : dflt;
+    },
+    // Check whether we have a value for a key.
+    has: function (k) {
+      return k in this.values;
+    },
+    // Accept a setting if its one of the given alternatives.
+    alt: function (k, v, a) {
+      for (var n = 0; n < a.length; ++n) {
+        if (v === a[n]) {
+          this.set(k, v);
+          break;
+        }
+      }
+    },
+    // Accept a setting if its a valid (signed) integer.
+    integer: function (k, v) {
+      if (/^-?\d+$/.test(v)) {
+        // integer
+        this.set(k, parseInt(v, 10));
+      }
+    },
+    // Accept a setting if its a valid percentage.
+    percent: function (k, v) {
+      if (v.match(/^([\d]{1,3})(\.[\d]*)?%$/)) {
+        v = parseFloat(v);
+        if (v >= 0 && v <= 100) {
+          this.set(k, v);
+          return true;
+        }
+      }
+      return false;
+    }
+  };
+
+  // Helper function to parse input into groups separated by 'groupDelim', and
+  // interprete each group as a key/value pair separated by 'keyValueDelim'.
+  function parseOptions(input, callback, keyValueDelim, groupDelim) {
+    var groups = groupDelim ? input.split(groupDelim) : [input];
+    for (var i in groups) {
+      if (typeof groups[i] !== "string") {
+        continue;
+      }
+      var kv = groups[i].split(keyValueDelim);
+      if (kv.length !== 2) {
+        continue;
+      }
+      var k = kv[0].trim();
+      var v = kv[1].trim();
+      callback(k, v);
+    }
+  }
+  function parseCue(input, cue, regionList) {
+    // Remember the original input if we need to throw an error.
+    var oInput = input;
+    // 4.1 WebVTT timestamp
+    function consumeTimeStamp() {
+      var ts = parseTimeStamp(input);
+      if (ts === null) {
+        throw new ParsingError(ParsingError.Errors.BadTimeStamp, "Malformed timestamp: " + oInput);
+      }
+      // Remove time stamp from input.
+      input = input.replace(/^[^\sa-zA-Z-]+/, "");
+      return ts;
+    }
+
+    // 4.4.2 WebVTT cue settings
+    function consumeCueSettings(input, cue) {
+      var settings = new Settings();
+      parseOptions(input, function (k, v) {
+        switch (k) {
+          case "region":
+            // Find the last region we parsed with the same region id.
+            for (var i = regionList.length - 1; i >= 0; i--) {
+              if (regionList[i].id === v) {
+                settings.set(k, regionList[i].region);
+                break;
+              }
+            }
+            break;
+          case "vertical":
+            settings.alt(k, v, ["rl", "lr"]);
+            break;
+          case "line":
+            var vals = v.split(","),
+              vals0 = vals[0];
+            settings.integer(k, vals0);
+            settings.percent(k, vals0) ? settings.set("snapToLines", false) : null;
+            settings.alt(k, vals0, ["auto"]);
+            if (vals.length === 2) {
+              settings.alt("lineAlign", vals[1], ["start", "center", "end"]);
+            }
+            break;
+          case "position":
+            vals = v.split(",");
+            settings.percent(k, vals[0]);
+            if (vals.length === 2) {
+              settings.alt("positionAlign", vals[1], ["start", "center", "end"]);
+            }
+            break;
+          case "size":
+            settings.percent(k, v);
+            break;
+          case "align":
+            settings.alt(k, v, ["start", "center", "end", "left", "right"]);
+            break;
+        }
+      }, /:/, /\s/);
+
+      // Apply default values for any missing fields.
+      cue.region = settings.get("region", null);
+      cue.vertical = settings.get("vertical", "");
+      try {
+        cue.line = settings.get("line", "auto");
+      } catch (e) {}
+      cue.lineAlign = settings.get("lineAlign", "start");
+      cue.snapToLines = settings.get("snapToLines", true);
+      cue.size = settings.get("size", 100);
+      // Safari still uses the old middle value and won't accept center
+      try {
+        cue.align = settings.get("align", "center");
+      } catch (e) {
+        cue.align = settings.get("align", "middle");
+      }
+      try {
+        cue.position = settings.get("position", "auto");
+      } catch (e) {
+        cue.position = settings.get("position", {
+          start: 0,
+          left: 0,
+          center: 50,
+          middle: 50,
+          end: 100,
+          right: 100
+        }, cue.align);
+      }
+      cue.positionAlign = settings.get("positionAlign", {
+        start: "start",
+        left: "start",
+        center: "center",
+        middle: "center",
+        end: "end",
+        right: "end"
+      }, cue.align);
+    }
+    function skipWhitespace() {
+      input = input.replace(/^\s+/, "");
+    }
+
+    // 4.1 WebVTT cue timings.
+    skipWhitespace();
+    cue.startTime = consumeTimeStamp(); // (1) collect cue start time
+    skipWhitespace();
+    if (input.substr(0, 3) !== "-->") {
+      // (3) next characters must match "-->"
+      throw new ParsingError(ParsingError.Errors.BadTimeStamp, "Malformed time stamp (time stamps must be separated by '-->'): " + oInput);
+    }
+    input = input.substr(3);
+    skipWhitespace();
+    cue.endTime = consumeTimeStamp(); // (5) collect cue end time
+
+    // 4.1 WebVTT cue settings list.
+    skipWhitespace();
+    consumeCueSettings(input, cue);
+  }
+
+  // When evaluating this file as part of a Webpack bundle for server
+  // side rendering, `document` is an empty object.
+  var TEXTAREA_ELEMENT = document_1.createElement && document_1.createElement("textarea");
+  var TAG_NAME = {
+    c: "span",
+    i: "i",
+    b: "b",
+    u: "u",
+    ruby: "ruby",
+    rt: "rt",
+    v: "span",
+    lang: "span"
+  };
+
+  // 5.1 default text color
+  // 5.2 default text background color is equivalent to text color with bg_ prefix
+  var DEFAULT_COLOR_CLASS = {
+    white: 'rgba(255,255,255,1)',
+    lime: 'rgba(0,255,0,1)',
+    cyan: 'rgba(0,255,255,1)',
+    red: 'rgba(255,0,0,1)',
+    yellow: 'rgba(255,255,0,1)',
+    magenta: 'rgba(255,0,255,1)',
+    blue: 'rgba(0,0,255,1)',
+    black: 'rgba(0,0,0,1)'
+  };
+  var TAG_ANNOTATION = {
+    v: "title",
+    lang: "lang"
+  };
+  var NEEDS_PARENT = {
+    rt: "ruby"
+  };
+
+  // Parse content into a document fragment.
+  function parseContent(window, input) {
+    function nextToken() {
+      // Check for end-of-string.
+      if (!input) {
+        return null;
+      }
+
+      // Consume 'n' characters from the input.
+      function consume(result) {
+        input = input.substr(result.length);
+        return result;
+      }
+      var m = input.match(/^([^<]*)(<[^>]*>?)?/);
+      // If there is some text before the next tag, return it, otherwise return
+      // the tag.
+      return consume(m[1] ? m[1] : m[2]);
+    }
+    function unescape(s) {
+      TEXTAREA_ELEMENT.innerHTML = s;
+      s = TEXTAREA_ELEMENT.textContent;
+      TEXTAREA_ELEMENT.textContent = "";
+      return s;
+    }
+    function shouldAdd(current, element) {
+      return !NEEDS_PARENT[element.localName] || NEEDS_PARENT[element.localName] === current.localName;
+    }
+
+    // Create an element for this tag.
+    function createElement(type, annotation) {
+      var tagName = TAG_NAME[type];
+      if (!tagName) {
+        return null;
+      }
+      var element = window.document.createElement(tagName);
+      var name = TAG_ANNOTATION[type];
+      if (name && annotation) {
+        element[name] = annotation.trim();
+      }
+      return element;
+    }
+    var rootDiv = window.document.createElement("div"),
+      current = rootDiv,
+      t,
+      tagStack = [];
+    while ((t = nextToken()) !== null) {
+      if (t[0] === '<') {
+        if (t[1] === "/") {
+          // If the closing tag matches, move back up to the parent node.
+          if (tagStack.length && tagStack[tagStack.length - 1] === t.substr(2).replace(">", "")) {
+            tagStack.pop();
+            current = current.parentNode;
+          }
+          // Otherwise just ignore the end tag.
+          continue;
+        }
+        var ts = parseTimeStamp(t.substr(1, t.length - 2));
+        var node;
+        if (ts) {
+          // Timestamps are lead nodes as well.
+          node = window.document.createProcessingInstruction("timestamp", ts);
+          current.appendChild(node);
+          continue;
+        }
+        var m = t.match(/^<([^.\s/0-9>]+)(\.[^\s\\>]+)?([^>\\]+)?(\\?)>?$/);
+        // If we can't parse the tag, skip to the next tag.
+        if (!m) {
+          continue;
+        }
+        // Try to construct an element, and ignore the tag if we couldn't.
+        node = createElement(m[1], m[3]);
+        if (!node) {
+          continue;
+        }
+        // Determine if the tag should be added based on the context of where it
+        // is placed in the cuetext.
+        if (!shouldAdd(current, node)) {
+          continue;
+        }
+        // Set the class list (as a list of classes, separated by space).
+        if (m[2]) {
+          var classes = m[2].split('.');
+          classes.forEach(function (cl) {
+            var bgColor = /^bg_/.test(cl);
+            // slice out `bg_` if it's a background color
+            var colorName = bgColor ? cl.slice(3) : cl;
+            if (DEFAULT_COLOR_CLASS.hasOwnProperty(colorName)) {
+              var propName = bgColor ? 'background-color' : 'color';
+              var propValue = DEFAULT_COLOR_CLASS[colorName];
+              node.style[propName] = propValue;
+            }
+          });
+          node.className = classes.join(' ');
+        }
+        // Append the node to the current node, and enter the scope of the new
+        // node.
+        tagStack.push(m[1]);
+        current.appendChild(node);
+        current = node;
+        continue;
+      }
+
+      // Text nodes are leaf nodes.
+      current.appendChild(window.document.createTextNode(unescape(t)));
+    }
+    return rootDiv;
+  }
+
+  // This is a list of all the Unicode characters that have a strong
+  // right-to-left category. What this means is that these characters are
+  // written right-to-left for sure. It was generated by pulling all the strong
+  // right-to-left characters out of the Unicode data table. That table can
+  // found at: http://www.unicode.org/Public/UNIDATA/UnicodeData.txt
+  var strongRTLRanges = [[0x5be, 0x5be], [0x5c0, 0x5c0], [0x5c3, 0x5c3], [0x5c6, 0x5c6], [0x5d0, 0x5ea], [0x5f0, 0x5f4], [0x608, 0x608], [0x60b, 0x60b], [0x60d, 0x60d], [0x61b, 0x61b], [0x61e, 0x64a], [0x66d, 0x66f], [0x671, 0x6d5], [0x6e5, 0x6e6], [0x6ee, 0x6ef], [0x6fa, 0x70d], [0x70f, 0x710], [0x712, 0x72f], [0x74d, 0x7a5], [0x7b1, 0x7b1], [0x7c0, 0x7ea], [0x7f4, 0x7f5], [0x7fa, 0x7fa], [0x800, 0x815], [0x81a, 0x81a], [0x824, 0x824], [0x828, 0x828], [0x830, 0x83e], [0x840, 0x858], [0x85e, 0x85e], [0x8a0, 0x8a0], [0x8a2, 0x8ac], [0x200f, 0x200f], [0xfb1d, 0xfb1d], [0xfb1f, 0xfb28], [0xfb2a, 0xfb36], [0xfb38, 0xfb3c], [0xfb3e, 0xfb3e], [0xfb40, 0xfb41], [0xfb43, 0xfb44], [0xfb46, 0xfbc1], [0xfbd3, 0xfd3d], [0xfd50, 0xfd8f], [0xfd92, 0xfdc7], [0xfdf0, 0xfdfc], [0xfe70, 0xfe74], [0xfe76, 0xfefc], [0x10800, 0x10805], [0x10808, 0x10808], [0x1080a, 0x10835], [0x10837, 0x10838], [0x1083c, 0x1083c], [0x1083f, 0x10855], [0x10857, 0x1085f], [0x10900, 0x1091b], [0x10920, 0x10939], [0x1093f, 0x1093f], [0x10980, 0x109b7], [0x109be, 0x109bf], [0x10a00, 0x10a00], [0x10a10, 0x10a13], [0x10a15, 0x10a17], [0x10a19, 0x10a33], [0x10a40, 0x10a47], [0x10a50, 0x10a58], [0x10a60, 0x10a7f], [0x10b00, 0x10b35], [0x10b40, 0x10b55], [0x10b58, 0x10b72], [0x10b78, 0x10b7f], [0x10c00, 0x10c48], [0x1ee00, 0x1ee03], [0x1ee05, 0x1ee1f], [0x1ee21, 0x1ee22], [0x1ee24, 0x1ee24], [0x1ee27, 0x1ee27], [0x1ee29, 0x1ee32], [0x1ee34, 0x1ee37], [0x1ee39, 0x1ee39], [0x1ee3b, 0x1ee3b], [0x1ee42, 0x1ee42], [0x1ee47, 0x1ee47], [0x1ee49, 0x1ee49], [0x1ee4b, 0x1ee4b], [0x1ee4d, 0x1ee4f], [0x1ee51, 0x1ee52], [0x1ee54, 0x1ee54], [0x1ee57, 0x1ee57], [0x1ee59, 0x1ee59], [0x1ee5b, 0x1ee5b], [0x1ee5d, 0x1ee5d], [0x1ee5f, 0x1ee5f], [0x1ee61, 0x1ee62], [0x1ee64, 0x1ee64], [0x1ee67, 0x1ee6a], [0x1ee6c, 0x1ee72], [0x1ee74, 0x1ee77], [0x1ee79, 0x1ee7c], [0x1ee7e, 0x1ee7e], [0x1ee80, 0x1ee89], [0x1ee8b, 0x1ee9b], [0x1eea1, 0x1eea3], [0x1eea5, 0x1eea9], [0x1eeab, 0x1eebb], [0x10fffd, 0x10fffd]];
+  function isStrongRTLChar(charCode) {
+    for (var i = 0; i < strongRTLRanges.length; i++) {
+      var currentRange = strongRTLRanges[i];
+      if (charCode >= currentRange[0] && charCode <= currentRange[1]) {
+        return true;
+      }
+    }
+    return false;
+  }
+  function determineBidi(cueDiv) {
+    var nodeStack = [],
+      text = "",
+      charCode;
+    if (!cueDiv || !cueDiv.childNodes) {
+      return "ltr";
+    }
+    function pushNodes(nodeStack, node) {
+      for (var i = node.childNodes.length - 1; i >= 0; i--) {
+        nodeStack.push(node.childNodes[i]);
+      }
+    }
+    function nextTextNode(nodeStack) {
+      if (!nodeStack || !nodeStack.length) {
+        return null;
+      }
+      var node = nodeStack.pop(),
+        text = node.textContent || node.innerText;
+      if (text) {
+        // TODO: This should match all unicode type B characters (paragraph
+        // separator characters). See issue #115.
+        var m = text.match(/^.*(\n|\r)/);
+        if (m) {
+          nodeStack.length = 0;
+          return m[0];
+        }
+        return text;
+      }
+      if (node.tagName === "ruby") {
+        return nextTextNode(nodeStack);
+      }
+      if (node.childNodes) {
+        pushNodes(nodeStack, node);
+        return nextTextNode(nodeStack);
+      }
+    }
+    pushNodes(nodeStack, cueDiv);
+    while (text = nextTextNode(nodeStack)) {
+      for (var i = 0; i < text.length; i++) {
+        charCode = text.charCodeAt(i);
+        if (isStrongRTLChar(charCode)) {
+          return "rtl";
+        }
+      }
+    }
+    return "ltr";
+  }
+  function computeLinePos(cue) {
+    if (typeof cue.line === "number" && (cue.snapToLines || cue.line >= 0 && cue.line <= 100)) {
+      return cue.line;
+    }
+    if (!cue.track || !cue.track.textTrackList || !cue.track.textTrackList.mediaElement) {
+      return -1;
+    }
+    var track = cue.track,
+      trackList = track.textTrackList,
+      count = 0;
+    for (var i = 0; i < trackList.length && trackList[i] !== track; i++) {
+      if (trackList[i].mode === "showing") {
+        count++;
+      }
+    }
+    return ++count * -1;
+  }
+  function StyleBox() {}
+
+  // Apply styles to a div. If there is no div passed then it defaults to the
+  // div on 'this'.
+  StyleBox.prototype.applyStyles = function (styles, div) {
+    div = div || this.div;
+    for (var prop in styles) {
+      if (styles.hasOwnProperty(prop)) {
+        div.style[prop] = styles[prop];
+      }
+    }
+  };
+  StyleBox.prototype.formatStyle = function (val, unit) {
+    return val === 0 ? 0 : val + unit;
+  };
+
+  // Constructs the computed display state of the cue (a div). Places the div
+  // into the overlay which should be a block level element (usually a div).
+  function CueStyleBox(window, cue, styleOptions) {
+    StyleBox.call(this);
+    this.cue = cue;
+
+    // Parse our cue's text into a DOM tree rooted at 'cueDiv'. This div will
+    // have inline positioning and will function as the cue background box.
+    this.cueDiv = parseContent(window, cue.text);
+    var styles = {
+      color: "rgba(255, 255, 255, 1)",
+      backgroundColor: "rgba(0, 0, 0, 0.8)",
+      position: "relative",
+      left: 0,
+      right: 0,
+      top: 0,
+      bottom: 0,
+      display: "inline",
+      writingMode: cue.vertical === "" ? "horizontal-tb" : cue.vertical === "lr" ? "vertical-lr" : "vertical-rl",
+      unicodeBidi: "plaintext"
+    };
+    this.applyStyles(styles, this.cueDiv);
+
+    // Create an absolutely positioned div that will be used to position the cue
+    // div. Note, all WebVTT cue-setting alignments are equivalent to the CSS
+    // mirrors of them except middle instead of center on Safari.
+    this.div = window.document.createElement("div");
+    styles = {
+      direction: determineBidi(this.cueDiv),
+      writingMode: cue.vertical === "" ? "horizontal-tb" : cue.vertical === "lr" ? "vertical-lr" : "vertical-rl",
+      unicodeBidi: "plaintext",
+      textAlign: cue.align === "middle" ? "center" : cue.align,
+      font: styleOptions.font,
+      whiteSpace: "pre-line",
+      position: "absolute"
+    };
+    this.applyStyles(styles);
+    this.div.appendChild(this.cueDiv);
+
+    // Calculate the distance from the reference edge of the viewport to the text
+    // position of the cue box. The reference edge will be resolved later when
+    // the box orientation styles are applied.
+    var textPos = 0;
+    switch (cue.positionAlign) {
+      case "start":
+      case "line-left":
+        textPos = cue.position;
+        break;
+      case "center":
+        textPos = cue.position - cue.size / 2;
+        break;
+      case "end":
+      case "line-right":
+        textPos = cue.position - cue.size;
+        break;
+    }
+
+    // Horizontal box orientation; textPos is the distance from the left edge of the
+    // area to the left edge of the box and cue.size is the distance extending to
+    // the right from there.
+    if (cue.vertical === "") {
+      this.applyStyles({
+        left: this.formatStyle(textPos, "%"),
+        width: this.formatStyle(cue.size, "%")
+      });
+      // Vertical box orientation; textPos is the distance from the top edge of the
+      // area to the top edge of the box and cue.size is the height extending
+      // downwards from there.
+    } else {
+      this.applyStyles({
+        top: this.formatStyle(textPos, "%"),
+        height: this.formatStyle(cue.size, "%")
+      });
+    }
+    this.move = function (box) {
+      this.applyStyles({
+        top: this.formatStyle(box.top, "px"),
+        bottom: this.formatStyle(box.bottom, "px"),
+        left: this.formatStyle(box.left, "px"),
+        right: this.formatStyle(box.right, "px"),
+        height: this.formatStyle(box.height, "px"),
+        width: this.formatStyle(box.width, "px")
+      });
+    };
+  }
+  CueStyleBox.prototype = _objCreate(StyleBox.prototype);
+  CueStyleBox.prototype.constructor = CueStyleBox;
+
+  // Represents the co-ordinates of an Element in a way that we can easily
+  // compute things with such as if it overlaps or intersects with another Element.
+  // Can initialize it with either a StyleBox or another BoxPosition.
+  function BoxPosition(obj) {
+    // Either a BoxPosition was passed in and we need to copy it, or a StyleBox
+    // was passed in and we need to copy the results of 'getBoundingClientRect'
+    // as the object returned is readonly. All co-ordinate values are in reference
+    // to the viewport origin (top left).
+    var lh, height, width, top;
+    if (obj.div) {
+      height = obj.div.offsetHeight;
+      width = obj.div.offsetWidth;
+      top = obj.div.offsetTop;
+      var rects = (rects = obj.div.childNodes) && (rects = rects[0]) && rects.getClientRects && rects.getClientRects();
+      obj = obj.div.getBoundingClientRect();
+      // In certain cases the outter div will be slightly larger then the sum of
+      // the inner div's lines. This could be due to bold text, etc, on some platforms.
+      // In this case we should get the average line height and use that. This will
+      // result in the desired behaviour.
+      lh = rects ? Math.max(rects[0] && rects[0].height || 0, obj.height / rects.length) : 0;
+    }
+    this.left = obj.left;
+    this.right = obj.right;
+    this.top = obj.top || top;
+    this.height = obj.height || height;
+    this.bottom = obj.bottom || top + (obj.height || height);
+    this.width = obj.width || width;
+    this.lineHeight = lh !== undefined ? lh : obj.lineHeight;
+  }
+
+  // Move the box along a particular axis. Optionally pass in an amount to move
+  // the box. If no amount is passed then the default is the line height of the
+  // box.
+  BoxPosition.prototype.move = function (axis, toMove) {
+    toMove = toMove !== undefined ? toMove : this.lineHeight;
+    switch (axis) {
+      case "+x":
+        this.left += toMove;
+        this.right += toMove;
+        break;
+      case "-x":
+        this.left -= toMove;
+        this.right -= toMove;
+        break;
+      case "+y":
+        this.top += toMove;
+        this.bottom += toMove;
+        break;
+      case "-y":
+        this.top -= toMove;
+        this.bottom -= toMove;
+        break;
+    }
+  };
+
+  // Check if this box overlaps another box, b2.
+  BoxPosition.prototype.overlaps = function (b2) {
+    return this.left < b2.right && this.right > b2.left && this.top < b2.bottom && this.bottom > b2.top;
+  };
+
+  // Check if this box overlaps any other boxes in boxes.
+  BoxPosition.prototype.overlapsAny = function (boxes) {
+    for (var i = 0; i < boxes.length; i++) {
+      if (this.overlaps(boxes[i])) {
+        return true;
+      }
+    }
+    return false;
+  };
+
+  // Check if this box is within another box.
+  BoxPosition.prototype.within = function (container) {
+    return this.top >= container.top && this.bottom <= container.bottom && this.left >= container.left && this.right <= container.right;
+  };
+
+  // Check if this box is entirely within the container or it is overlapping
+  // on the edge opposite of the axis direction passed. For example, if "+x" is
+  // passed and the box is overlapping on the left edge of the container, then
+  // return true.
+  BoxPosition.prototype.overlapsOppositeAxis = function (container, axis) {
+    switch (axis) {
+      case "+x":
+        return this.left < container.left;
+      case "-x":
+        return this.right > container.right;
+      case "+y":
+        return this.top < container.top;
+      case "-y":
+        return this.bottom > container.bottom;
+    }
+  };
+
+  // Find the percentage of the area that this box is overlapping with another
+  // box.
+  BoxPosition.prototype.intersectPercentage = function (b2) {
+    var x = Math.max(0, Math.min(this.right, b2.right) - Math.max(this.left, b2.left)),
+      y = Math.max(0, Math.min(this.bottom, b2.bottom) - Math.max(this.top, b2.top)),
+      intersectArea = x * y;
+    return intersectArea / (this.height * this.width);
+  };
+
+  // Convert the positions from this box to CSS compatible positions using
+  // the reference container's positions. This has to be done because this
+  // box's positions are in reference to the viewport origin, whereas, CSS
+  // values are in referecne to their respective edges.
+  BoxPosition.prototype.toCSSCompatValues = function (reference) {
+    return {
+      top: this.top - reference.top,
+      bottom: reference.bottom - this.bottom,
+      left: this.left - reference.left,
+      right: reference.right - this.right,
+      height: this.height,
+      width: this.width
+    };
+  };
+
+  // Get an object that represents the box's position without anything extra.
+  // Can pass a StyleBox, HTMLElement, or another BoxPositon.
+  BoxPosition.getSimpleBoxPosition = function (obj) {
+    var height = obj.div ? obj.div.offsetHeight : obj.tagName ? obj.offsetHeight : 0;
+    var width = obj.div ? obj.div.offsetWidth : obj.tagName ? obj.offsetWidth : 0;
+    var top = obj.div ? obj.div.offsetTop : obj.tagName ? obj.offsetTop : 0;
+    obj = obj.div ? obj.div.getBoundingClientRect() : obj.tagName ? obj.getBoundingClientRect() : obj;
+    var ret = {
+      left: obj.left,
+      right: obj.right,
+      top: obj.top || top,
+      height: obj.height || height,
+      bottom: obj.bottom || top + (obj.height || height),
+      width: obj.width || width
+    };
+    return ret;
+  };
+
+  // Move a StyleBox to its specified, or next best, position. The containerBox
+  // is the box that contains the StyleBox, such as a div. boxPositions are
+  // a list of other boxes that the styleBox can't overlap with.
+  function moveBoxToLinePosition(window, styleBox, containerBox, boxPositions) {
+    // Find the best position for a cue box, b, on the video. The axis parameter
+    // is a list of axis, the order of which, it will move the box along. For example:
+    // Passing ["+x", "-x"] will move the box first along the x axis in the positive
+    // direction. If it doesn't find a good position for it there it will then move
+    // it along the x axis in the negative direction.
+    function findBestPosition(b, axis) {
+      var bestPosition,
+        specifiedPosition = new BoxPosition(b),
+        percentage = 1; // Highest possible so the first thing we get is better.
+
+      for (var i = 0; i < axis.length; i++) {
+        while (b.overlapsOppositeAxis(containerBox, axis[i]) || b.within(containerBox) && b.overlapsAny(boxPositions)) {
+          b.move(axis[i]);
+        }
+        // We found a spot where we aren't overlapping anything. This is our
+        // best position.
+        if (b.within(containerBox)) {
+          return b;
+        }
+        var p = b.intersectPercentage(containerBox);
+        // If we're outside the container box less then we were on our last try
+        // then remember this position as the best position.
+        if (percentage > p) {
+          bestPosition = new BoxPosition(b);
+          percentage = p;
+        }
+        // Reset the box position to the specified position.
+        b = new BoxPosition(specifiedPosition);
+      }
+      return bestPosition || specifiedPosition;
+    }
+    var boxPosition = new BoxPosition(styleBox),
+      cue = styleBox.cue,
+      linePos = computeLinePos(cue),
+      axis = [];
+
+    // If we have a line number to align the cue to.
+    if (cue.snapToLines) {
+      var size;
+      switch (cue.vertical) {
+        case "":
+          axis = ["+y", "-y"];
+          size = "height";
+          break;
+        case "rl":
+          axis = ["+x", "-x"];
+          size = "width";
+          break;
+        case "lr":
+          axis = ["-x", "+x"];
+          size = "width";
+          break;
+      }
+      var step = boxPosition.lineHeight,
+        position = step * Math.round(linePos),
+        maxPosition = containerBox[size] + step,
+        initialAxis = axis[0];
+
+      // If the specified intial position is greater then the max position then
+      // clamp the box to the amount of steps it would take for the box to
+      // reach the max position.
+      if (Math.abs(position) > maxPosition) {
+        position = position < 0 ? -1 : 1;
+        position *= Math.ceil(maxPosition / step) * step;
+      }
+
+      // If computed line position returns negative then line numbers are
+      // relative to the bottom of the video instead of the top. Therefore, we
+      // need to increase our initial position by the length or width of the
+      // video, depending on the writing direction, and reverse our axis directions.
+      if (linePos < 0) {
+        position += cue.vertical === "" ? containerBox.height : containerBox.width;
+        axis = axis.reverse();
+      }
+
+      // Move the box to the specified position. This may not be its best
+      // position.
+      boxPosition.move(initialAxis, position);
+    } else {
+      // If we have a percentage line value for the cue.
+      var calculatedPercentage = boxPosition.lineHeight / containerBox.height * 100;
+      switch (cue.lineAlign) {
+        case "center":
+          linePos -= calculatedPercentage / 2;
+          break;
+        case "end":
+          linePos -= calculatedPercentage;
+          break;
+      }
+
+      // Apply initial line position to the cue box.
+      switch (cue.vertical) {
+        case "":
+          styleBox.applyStyles({
+            top: styleBox.formatStyle(linePos, "%")
+          });
+          break;
+        case "rl":
+          styleBox.applyStyles({
+            left: styleBox.formatStyle(linePos, "%")
+          });
+          break;
+        case "lr":
+          styleBox.applyStyles({
+            right: styleBox.formatStyle(linePos, "%")
+          });
+          break;
+      }
+      axis = ["+y", "-x", "+x", "-y"];
+
+      // Get the box position again after we've applied the specified positioning
+      // to it.
+      boxPosition = new BoxPosition(styleBox);
+    }
+    var bestPosition = findBestPosition(boxPosition, axis);
+    styleBox.move(bestPosition.toCSSCompatValues(containerBox));
+  }
+  function WebVTT$1() {
+    // Nothing
+  }
+
+  // Helper to allow strings to be decoded instead of the default binary utf8 data.
+  WebVTT$1.StringDecoder = function () {
+    return {
+      decode: function (data) {
+        if (!data) {
+          return "";
+        }
+        if (typeof data !== "string") {
+          throw new Error("Error - expected string data.");
+        }
+        return decodeURIComponent(encodeURIComponent(data));
+      }
+    };
+  };
+  WebVTT$1.convertCueToDOMTree = function (window, cuetext) {
+    if (!window || !cuetext) {
+      return null;
+    }
+    return parseContent(window, cuetext);
+  };
+  var FONT_SIZE_PERCENT = 0.05;
+  var FONT_STYLE = "sans-serif";
+  var CUE_BACKGROUND_PADDING = "1.5%";
+
+  // Runs the processing model over the cues and regions passed to it.
+  // @param overlay A block level element (usually a div) that the computed cues
+  //                and regions will be placed into.
+  WebVTT$1.processCues = function (window, cues, overlay) {
+    if (!window || !cues || !overlay) {
+      return null;
+    }
+
+    // Remove all previous children.
+    while (overlay.firstChild) {
+      overlay.removeChild(overlay.firstChild);
+    }
+    var paddedOverlay = window.document.createElement("div");
+    paddedOverlay.style.position = "absolute";
+    paddedOverlay.style.left = "0";
+    paddedOverlay.style.right = "0";
+    paddedOverlay.style.top = "0";
+    paddedOverlay.style.bottom = "0";
+    paddedOverlay.style.margin = CUE_BACKGROUND_PADDING;
+    overlay.appendChild(paddedOverlay);
+
+    // Determine if we need to compute the display states of the cues. This could
+    // be the case if a cue's state has been changed since the last computation or
+    // if it has not been computed yet.
+    function shouldCompute(cues) {
+      for (var i = 0; i < cues.length; i++) {
+        if (cues[i].hasBeenReset || !cues[i].displayState) {
+          return true;
+        }
+      }
+      return false;
+    }
+
+    // We don't need to recompute the cues' display states. Just reuse them.
+    if (!shouldCompute(cues)) {
+      for (var i = 0; i < cues.length; i++) {
+        paddedOverlay.appendChild(cues[i].displayState);
+      }
+      return;
+    }
+    var boxPositions = [],
+      containerBox = BoxPosition.getSimpleBoxPosition(paddedOverlay),
+      fontSize = Math.round(containerBox.height * FONT_SIZE_PERCENT * 100) / 100;
+    var styleOptions = {
+      font: fontSize + "px " + FONT_STYLE
+    };
+    (function () {
+      var styleBox, cue;
+      for (var i = 0; i < cues.length; i++) {
+        cue = cues[i];
+
+        // Compute the intial position and styles of the cue div.
+        styleBox = new CueStyleBox(window, cue, styleOptions);
+        paddedOverlay.appendChild(styleBox.div);
+
+        // Move the cue div to it's correct line position.
+        moveBoxToLinePosition(window, styleBox, containerBox, boxPositions);
+
+        // Remember the computed div so that we don't have to recompute it later
+        // if we don't have too.
+        cue.displayState = styleBox.div;
+        boxPositions.push(BoxPosition.getSimpleBoxPosition(styleBox));
+      }
+    })();
+  };
+  WebVTT$1.Parser = function (window, vttjs, decoder) {
+    if (!decoder) {
+      decoder = vttjs;
+      vttjs = {};
+    }
+    if (!vttjs) {
+      vttjs = {};
+    }
+    this.window = window;
+    this.vttjs = vttjs;
+    this.state = "INITIAL";
+    this.buffer = "";
+    this.decoder = decoder || new TextDecoder("utf8");
+    this.regionList = [];
+  };
+  WebVTT$1.Parser.prototype = {
+    // If the error is a ParsingError then report it to the consumer if
+    // possible. If it's not a ParsingError then throw it like normal.
+    reportOrThrowError: function (e) {
+      if (e instanceof ParsingError) {
+        this.onparsingerror && this.onparsingerror(e);
+      } else {
+        throw e;
+      }
+    },
+    parse: function (data) {
+      var self = this;
+
+      // If there is no data then we won't decode it, but will just try to parse
+      // whatever is in buffer already. This may occur in circumstances, for
+      // example when flush() is called.
+      if (data) {
+        // Try to decode the data that we received.
+        self.buffer += self.decoder.decode(data, {
+          stream: true
+        });
+      }
+      function collectNextLine() {
+        var buffer = self.buffer;
+        var pos = 0;
+        while (pos < buffer.length && buffer[pos] !== '\r' && buffer[pos] !== '\n') {
+          ++pos;
+        }
+        var line = buffer.substr(0, pos);
+        // Advance the buffer early in case we fail below.
+        if (buffer[pos] === '\r') {
+          ++pos;
+        }
+        if (buffer[pos] === '\n') {
+          ++pos;
+        }
+        self.buffer = buffer.substr(pos);
+        return line;
+      }
+
+      // 3.4 WebVTT region and WebVTT region settings syntax
+      function parseRegion(input) {
+        var settings = new Settings();
+        parseOptions(input, function (k, v) {
+          switch (k) {
+            case "id":
+              settings.set(k, v);
+              break;
+            case "width":
+              settings.percent(k, v);
+              break;
+            case "lines":
+              settings.integer(k, v);
+              break;
+            case "regionanchor":
+            case "viewportanchor":
+              var xy = v.split(',');
+              if (xy.length !== 2) {
+                break;
+              }
+              // We have to make sure both x and y parse, so use a temporary
+              // settings object here.
+              var anchor = new Settings();
+              anchor.percent("x", xy[0]);
+              anchor.percent("y", xy[1]);
+              if (!anchor.has("x") || !anchor.has("y")) {
+                break;
+              }
+              settings.set(k + "X", anchor.get("x"));
+              settings.set(k + "Y", anchor.get("y"));
+              break;
+            case "scroll":
+              settings.alt(k, v, ["up"]);
+              break;
+          }
+        }, /=/, /\s/);
+
+        // Create the region, using default values for any values that were not
+        // specified.
+        if (settings.has("id")) {
+          var region = new (self.vttjs.VTTRegion || self.window.VTTRegion)();
+          region.width = settings.get("width", 100);
+          region.lines = settings.get("lines", 3);
+          region.regionAnchorX = settings.get("regionanchorX", 0);
+          region.regionAnchorY = settings.get("regionanchorY", 100);
+          region.viewportAnchorX = settings.get("viewportanchorX", 0);
+          region.viewportAnchorY = settings.get("viewportanchorY", 100);
+          region.scroll = settings.get("scroll", "");
+          // Register the region.
+          self.onregion && self.onregion(region);
+          // Remember the VTTRegion for later in case we parse any VTTCues that
+          // reference it.
+          self.regionList.push({
+            id: settings.get("id"),
+            region: region
+          });
+        }
+      }
+
+      // draft-pantos-http-live-streaming-20
+      // https://tools.ietf.org/html/draft-pantos-http-live-streaming-20#section-3.5
+      // 3.5 WebVTT
+      function parseTimestampMap(input) {
+        var settings = new Settings();
+        parseOptions(input, function (k, v) {
+          switch (k) {
+            case "MPEGT":
+              settings.integer(k + 'S', v);
+              break;
+            case "LOCA":
+              settings.set(k + 'L', parseTimeStamp(v));
+              break;
+          }
+        }, /[^\d]:/, /,/);
+        self.ontimestampmap && self.ontimestampmap({
+          "MPEGTS": settings.get("MPEGTS"),
+          "LOCAL": settings.get("LOCAL")
+        });
+      }
+
+      // 3.2 WebVTT metadata header syntax
+      function parseHeader(input) {
+        if (input.match(/X-TIMESTAMP-MAP/)) {
+          // This line contains HLS X-TIMESTAMP-MAP metadata
+          parseOptions(input, function (k, v) {
+            switch (k) {
+              case "X-TIMESTAMP-MAP":
+                parseTimestampMap(v);
+                break;
+            }
+          }, /=/);
+        } else {
+          parseOptions(input, function (k, v) {
+            switch (k) {
+              case "Region":
+                // 3.3 WebVTT region metadata header syntax
+                parseRegion(v);
+                break;
+            }
+          }, /:/);
+        }
+      }
+
+      // 5.1 WebVTT file parsing.
+      try {
+        var line;
+        if (self.state === "INITIAL") {
+          // We can't start parsing until we have the first line.
+          if (!/\r\n|\n/.test(self.buffer)) {
+            return this;
+          }
+          line = collectNextLine();
+          var m = line.match(/^WEBVTT([ \t].*)?$/);
+          if (!m || !m[0]) {
+            throw new ParsingError(ParsingError.Errors.BadSignature);
+          }
+          self.state = "HEADER";
+        }
+        var alreadyCollectedLine = false;
+        while (self.buffer) {
+          // We can't parse a line until we have the full line.
+          if (!/\r\n|\n/.test(self.buffer)) {
+            return this;
+          }
+          if (!alreadyCollectedLine) {
+            line = collectNextLine();
+          } else {
+            alreadyCollectedLine = false;
+          }
+          switch (self.state) {
+            case "HEADER":
+              // 13-18 - Allow a header (metadata) under the WEBVTT line.
+              if (/:/.test(line)) {
+                parseHeader(line);
+              } else if (!line) {
+                // An empty line terminates the header and starts the body (cues).
+                self.state = "ID";
+              }
+              continue;
+            case "NOTE":
+              // Ignore NOTE blocks.
+              if (!line) {
+                self.state = "ID";
+              }
+              continue;
+            case "ID":
+              // Check for the start of NOTE blocks.
+              if (/^NOTE($|[ \t])/.test(line)) {
+                self.state = "NOTE";
+                break;
+              }
+              // 19-29 - Allow any number of line terminators, then initialize new cue values.
+              if (!line) {
+                continue;
+              }
+              self.cue = new (self.vttjs.VTTCue || self.window.VTTCue)(0, 0, "");
+              // Safari still uses the old middle value and won't accept center
+              try {
+                self.cue.align = "center";
+              } catch (e) {
+                self.cue.align = "middle";
+              }
+              self.state = "CUE";
+              // 30-39 - Check if self line contains an optional identifier or timing data.
+              if (line.indexOf("-->") === -1) {
+                self.cue.id = line;
+                continue;
+              }
+            // Process line as start of a cue.
+            /*falls through*/
+            case "CUE":
+              // 40 - Collect cue timings and settings.
+              try {
+                parseCue(line, self.cue, self.regionList);
+              } catch (e) {
+                self.reportOrThrowError(e);
+                // In case of an error ignore rest of the cue.
+                self.cue = null;
+                self.state = "BADCUE";
+                continue;
+              }
+              self.state = "CUETEXT";
+              continue;
+            case "CUETEXT":
+              var hasSubstring = line.indexOf("-->") !== -1;
+              // 34 - If we have an empty line then report the cue.
+              // 35 - If we have the special substring '-->' then report the cue,
+              // but do not collect the line as we need to process the current
+              // one as a new cue.
+              if (!line || hasSubstring && (alreadyCollectedLine = true)) {
+                // We are done parsing self cue.
+                self.oncue && self.oncue(self.cue);
+                self.cue = null;
+                self.state = "ID";
+                continue;
+              }
+              if (self.cue.text) {
+                self.cue.text += "\n";
+              }
+              self.cue.text += line.replace(/\u2028/g, '\n').replace(/u2029/g, '\n');
+              continue;
+            case "BADCUE":
+              // BADCUE
+              // 54-62 - Collect and discard the remaining cue.
+              if (!line) {
+                self.state = "ID";
+              }
+              continue;
+          }
+        }
+      } catch (e) {
+        self.reportOrThrowError(e);
+
+        // If we are currently parsing a cue, report what we have.
+        if (self.state === "CUETEXT" && self.cue && self.oncue) {
+          self.oncue(self.cue);
+        }
+        self.cue = null;
+        // Enter BADWEBVTT state if header was not parsed correctly otherwise
+        // another exception occurred so enter BADCUE state.
+        self.state = self.state === "INITIAL" ? "BADWEBVTT" : "BADCUE";
+      }
+      return this;
+    },
+    flush: function () {
+      var self = this;
+      try {
+        // Finish decoding the stream.
+        self.buffer += self.decoder.decode();
+        // Synthesize the end of the current cue or region.
+        if (self.cue || self.state === "HEADER") {
+          self.buffer += "\n\n";
+          self.parse();
+        }
+        // If we've flushed, parsed, and we're still on the INITIAL state then
+        // that means we don't have enough of the stream to parse the first
+        // line.
+        if (self.state === "INITIAL") {
+          throw new ParsingError(ParsingError.Errors.BadSignature);
+        }
+      } catch (e) {
+        self.reportOrThrowError(e);
+      }
+      self.onflush && self.onflush();
+      return this;
+    }
+  };
+  var vtt = WebVTT$1;
+
+  /**
+   * Copyright 2013 vtt.js Contributors
+   *
+   * Licensed under the Apache License, Version 2.0 (the "License");
+   * you may not use this file except in compliance with the License.
+   * You may obtain a copy of the License at
+   *
+   *   http://www.apache.org/licenses/LICENSE-2.0
+   *
+   * Unless required by applicable law or agreed to in writing, software
+   * distributed under the License is distributed on an "AS IS" BASIS,
+   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   * See the License for the specific language governing permissions and
+   * limitations under the License.
+   */
+
+  var autoKeyword = "auto";
+  var directionSetting = {
+    "": 1,
+    "lr": 1,
+    "rl": 1
+  };
+  var alignSetting = {
+    "start": 1,
+    "center": 1,
+    "end": 1,
+    "left": 1,
+    "right": 1,
+    "auto": 1,
+    "line-left": 1,
+    "line-right": 1
+  };
+  function findDirectionSetting(value) {
+    if (typeof value !== "string") {
+      return false;
+    }
+    var dir = directionSetting[value.toLowerCase()];
+    return dir ? value.toLowerCase() : false;
+  }
+  function findAlignSetting(value) {
+    if (typeof value !== "string") {
+      return false;
+    }
+    var align = alignSetting[value.toLowerCase()];
+    return align ? value.toLowerCase() : false;
+  }
+  function VTTCue(startTime, endTime, text) {
+    /**
+     * Shim implementation specific properties. These properties are not in
+     * the spec.
+     */
+
+    // Lets us know when the VTTCue's data has changed in such a way that we need
+    // to recompute its display state. This lets us compute its display state
+    // lazily.
+    this.hasBeenReset = false;
+
+    /**
+     * VTTCue and TextTrackCue properties
+     * http://dev.w3.org/html5/webvtt/#vttcue-interface
+     */
+
+    var _id = "";
+    var _pauseOnExit = false;
+    var _startTime = startTime;
+    var _endTime = endTime;
+    var _text = text;
+    var _region = null;
+    var _vertical = "";
+    var _snapToLines = true;
+    var _line = "auto";
+    var _lineAlign = "start";
+    var _position = "auto";
+    var _positionAlign = "auto";
+    var _size = 100;
+    var _align = "center";
+    Object.defineProperties(this, {
+      "id": {
+        enumerable: true,
+        get: function () {
+          return _id;
+        },
+        set: function (value) {
+          _id = "" + value;
+        }
+      },
+      "pauseOnExit": {
+        enumerable: true,
+        get: function () {
+          return _pauseOnExit;
+        },
+        set: function (value) {
+          _pauseOnExit = !!value;
+        }
+      },
+      "startTime": {
+        enumerable: true,
+        get: function () {
+          return _startTime;
+        },
+        set: function (value) {
+          if (typeof value !== "number") {
+            throw new TypeError("Start time must be set to a number.");
+          }
+          _startTime = value;
+          this.hasBeenReset = true;
+        }
+      },
+      "endTime": {
+        enumerable: true,
+        get: function () {
+          return _endTime;
+        },
+        set: function (value) {
+          if (typeof value !== "number") {
+            throw new TypeError("End time must be set to a number.");
+          }
+          _endTime = value;
+          this.hasBeenReset = true;
+        }
+      },
+      "text": {
+        enumerable: true,
+        get: function () {
+          return _text;
+        },
+        set: function (value) {
+          _text = "" + value;
+          this.hasBeenReset = true;
+        }
+      },
+      "region": {
+        enumerable: true,
+        get: function () {
+          return _region;
+        },
+        set: function (value) {
+          _region = value;
+          this.hasBeenReset = true;
+        }
+      },
+      "vertical": {
+        enumerable: true,
+        get: function () {
+          return _vertical;
+        },
+        set: function (value) {
+          var setting = findDirectionSetting(value);
+          // Have to check for false because the setting an be an empty string.
+          if (setting === false) {
+            throw new SyntaxError("Vertical: an invalid or illegal direction string was specified.");
+          }
+          _vertical = setting;
+          this.hasBeenReset = true;
+        }
+      },
+      "snapToLines": {
+        enumerable: true,
+        get: function () {
+          return _snapToLines;
+        },
+        set: function (value) {
+          _snapToLines = !!value;
+          this.hasBeenReset = true;
+        }
+      },
+      "line": {
+        enumerable: true,
+        get: function () {
+          return _line;
+        },
+        set: function (value) {
+          if (typeof value !== "number" && value !== autoKeyword) {
+            throw new SyntaxError("Line: an invalid number or illegal string was specified.");
+          }
+          _line = value;
+          this.hasBeenReset = true;
+        }
+      },
+      "lineAlign": {
+        enumerable: true,
+        get: function () {
+          return _lineAlign;
+        },
+        set: function (value) {
+          var setting = findAlignSetting(value);
+          if (!setting) {
+            console.warn("lineAlign: an invalid or illegal string was specified.");
+          } else {
+            _lineAlign = setting;
+            this.hasBeenReset = true;
+          }
+        }
+      },
+      "position": {
+        enumerable: true,
+        get: function () {
+          return _position;
+        },
+        set: function (value) {
+          if (value < 0 || value > 100) {
+            throw new Error("Position must be between 0 and 100.");
+          }
+          _position = value;
+          this.hasBeenReset = true;
+        }
+      },
+      "positionAlign": {
+        enumerable: true,
+        get: function () {
+          return _positionAlign;
+        },
+        set: function (value) {
+          var setting = findAlignSetting(value);
+          if (!setting) {
+            console.warn("positionAlign: an invalid or illegal string was specified.");
+          } else {
+            _positionAlign = setting;
+            this.hasBeenReset = true;
+          }
+        }
+      },
+      "size": {
+        enumerable: true,
+        get: function () {
+          return _size;
+        },
+        set: function (value) {
+          if (value < 0 || value > 100) {
+            throw new Error("Size must be between 0 and 100.");
+          }
+          _size = value;
+          this.hasBeenReset = true;
+        }
+      },
+      "align": {
+        enumerable: true,
+        get: function () {
+          return _align;
+        },
+        set: function (value) {
+          var setting = findAlignSetting(value);
+          if (!setting) {
+            throw new SyntaxError("align: an invalid or illegal alignment string was specified.");
+          }
+          _align = setting;
+          this.hasBeenReset = true;
+        }
+      }
+    });
+
+    /**
+     * Other <track> spec defined properties
+     */
+
+    // http://www.whatwg.org/specs/web-apps/current-work/multipage/the-video-element.html#text-track-cue-display-state
+    this.displayState = undefined;
+  }
+
+  /**
+   * VTTCue methods
+   */
+
+  VTTCue.prototype.getCueAsHTML = function () {
+    // Assume WebVTT.convertCueToDOMTree is on the global.
+    return WebVTT.convertCueToDOMTree(window, this.text);
+  };
+  var vttcue = VTTCue;
+
+  /**
+   * Copyright 2013 vtt.js Contributors
+   *
+   * Licensed under the Apache License, Version 2.0 (the "License");
+   * you may not use this file except in compliance with the License.
+   * You may obtain a copy of the License at
+   *
+   *   http://www.apache.org/licenses/LICENSE-2.0
+   *
+   * Unless required by applicable law or agreed to in writing, software
+   * distributed under the License is distributed on an "AS IS" BASIS,
+   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   * See the License for the specific language governing permissions and
+   * limitations under the License.
+   */
+
+  var scrollSetting = {
+    "": true,
+    "up": true
+  };
+  function findScrollSetting(value) {
+    if (typeof value !== "string") {
+      return false;
+    }
+    var scroll = scrollSetting[value.toLowerCase()];
+    return scroll ? value.toLowerCase() : false;
+  }
+  function isValidPercentValue(value) {
+    return typeof value === "number" && value >= 0 && value <= 100;
+  }
+
+  // VTTRegion shim http://dev.w3.org/html5/webvtt/#vttregion-interface
+  function VTTRegion() {
+    var _width = 100;
+    var _lines = 3;
+    var _regionAnchorX = 0;
+    var _regionAnchorY = 100;
+    var _viewportAnchorX = 0;
+    var _viewportAnchorY = 100;
+    var _scroll = "";
+    Object.defineProperties(this, {
+      "width": {
+        enumerable: true,
+        get: function () {
+          return _width;
+        },
+        set: function (value) {
+          if (!isValidPercentValue(value)) {
+            throw new Error("Width must be between 0 and 100.");
+          }
+          _width = value;
+        }
+      },
+      "lines": {
+        enumerable: true,
+        get: function () {
+          return _lines;
+        },
+        set: function (value) {
+          if (typeof value !== "number") {
+            throw new TypeError("Lines must be set to a number.");
+          }
+          _lines = value;
+        }
+      },
+      "regionAnchorY": {
+        enumerable: true,
+        get: function () {
+          return _regionAnchorY;
+        },
+        set: function (value) {
+          if (!isValidPercentValue(value)) {
+            throw new Error("RegionAnchorX must be between 0 and 100.");
+          }
+          _regionAnchorY = value;
+        }
+      },
+      "regionAnchorX": {
+        enumerable: true,
+        get: function () {
+          return _regionAnchorX;
+        },
+        set: function (value) {
+          if (!isValidPercentValue(value)) {
+            throw new Error("RegionAnchorY must be between 0 and 100.");
+          }
+          _regionAnchorX = value;
+        }
+      },
+      "viewportAnchorY": {
+        enumerable: true,
+        get: function () {
+          return _viewportAnchorY;
+        },
+        set: function (value) {
+          if (!isValidPercentValue(value)) {
+            throw new Error("ViewportAnchorY must be between 0 and 100.");
+          }
+          _viewportAnchorY = value;
+        }
+      },
+      "viewportAnchorX": {
+        enumerable: true,
+        get: function () {
+          return _viewportAnchorX;
+        },
+        set: function (value) {
+          if (!isValidPercentValue(value)) {
+            throw new Error("ViewportAnchorX must be between 0 and 100.");
+          }
+          _viewportAnchorX = value;
+        }
+      },
+      "scroll": {
+        enumerable: true,
+        get: function () {
+          return _scroll;
+        },
+        set: function (value) {
+          var setting = findScrollSetting(value);
+          // Have to check for false as an empty string is a legal value.
+          if (setting === false) {
+            console.warn("Scroll: an invalid or illegal string was specified.");
+          } else {
+            _scroll = setting;
+          }
+        }
+      }
+    });
+  }
+  var vttregion = VTTRegion;
+
+  var browserIndex = createCommonjsModule(function (module) {
+    /**
+     * Copyright 2013 vtt.js Contributors
+     *
+     * Licensed under the Apache License, Version 2.0 (the "License");
+     * you may not use this file except in compliance with the License.
+     * You may obtain a copy of the License at
+     *
+     *   http://www.apache.org/licenses/LICENSE-2.0
+     *
+     * Unless required by applicable law or agreed to in writing, software
+     * distributed under the License is distributed on an "AS IS" BASIS,
+     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     * See the License for the specific language governing permissions and
+     * limitations under the License.
+     */
+
+    // Default exports for Node. Export the extended versions of VTTCue and
+    // VTTRegion in Node since we likely want the capability to convert back and
+    // forth between JSON. If we don't then it's not that big of a deal since we're
+    // off browser.
+
+    var vttjs = module.exports = {
+      WebVTT: vtt,
+      VTTCue: vttcue,
+      VTTRegion: vttregion
+    };
+    window_1.vttjs = vttjs;
+    window_1.WebVTT = vttjs.WebVTT;
+    var cueShim = vttjs.VTTCue;
+    var regionShim = vttjs.VTTRegion;
+    var nativeVTTCue = window_1.VTTCue;
+    var nativeVTTRegion = window_1.VTTRegion;
+    vttjs.shim = function () {
+      window_1.VTTCue = cueShim;
+      window_1.VTTRegion = regionShim;
+    };
+    vttjs.restore = function () {
+      window_1.VTTCue = nativeVTTCue;
+      window_1.VTTRegion = nativeVTTRegion;
+    };
+    if (!window_1.VTTCue) {
+      vttjs.shim();
+    }
+  });
+  browserIndex.WebVTT;
+  browserIndex.VTTCue;
+  browserIndex.VTTRegion;
+
+  /**
+   * @file tech.js
+   */
+
+  /**
+   * An Object containing a structure like: `{src: 'url', type: 'mimetype'}` or string
+   * that just contains the src url alone.
+   * * `var SourceObject = {src: 'http://ex.com/video.mp4', type: 'video/mp4'};`
+     * `var SourceString = 'http://example.com/some-video.mp4';`
+   *
+   * @typedef {Object|string} SourceObject
+   *
+   * @property {string} src
+   *           The url to the source
+   *
+   * @property {string} type
+   *           The mime type of the source
+   */
+
+  /**
+   * A function used by {@link Tech} to create a new {@link TextTrack}.
+   *
+   * @private
+   *
+   * @param {Tech} self
+   *        An instance of the Tech class.
+   *
+   * @param {string} kind
+   *        `TextTrack` kind (subtitles, captions, descriptions, chapters, or metadata)
+   *
+   * @param {string} [label]
+   *        Label to identify the text track
+   *
+   * @param {string} [language]
+   *        Two letter language abbreviation
+   *
+   * @param {Object} [options={}]
+   *        An object with additional text track options
+   *
+   * @return {TextTrack}
+   *          The text track that was created.
+   */
+  function createTrackHelper(self, kind, label, language, options = {}) {
+    const tracks = self.textTracks();
+    options.kind = kind;
+    if (label) {
+      options.label = label;
+    }
+    if (language) {
+      options.language = language;
+    }
+    options.tech = self;
+    const track = new ALL.text.TrackClass(options);
+    tracks.addTrack(track);
+    return track;
+  }
+
+  /**
+   * This is the base class for media playback technology controllers, such as
+   * {@link HTML5}
+   *
+   * @extends Component
+   */
+  class Tech extends Component$1 {
+    /**
+    * Create an instance of this Tech.
+    *
+    * @param {Object} [options]
+    *        The key/value store of player options.
+    *
+    * @param {Function} [ready]
+    *        Callback function to call when the `HTML5` Tech is ready.
+    */
+    constructor(options = {}, ready = function () {}) {
+      // we don't want the tech to report user activity automatically.
+      // This is done manually in addControlsListeners
+      options.reportTouchActivity = false;
+      super(null, options, ready);
+      this.onDurationChange_ = e => this.onDurationChange(e);
+      this.trackProgress_ = e => this.trackProgress(e);
+      this.trackCurrentTime_ = e => this.trackCurrentTime(e);
+      this.stopTrackingCurrentTime_ = e => this.stopTrackingCurrentTime(e);
+      this.disposeSourceHandler_ = e => this.disposeSourceHandler(e);
+      this.queuedHanders_ = new Set();
+
+      // keep track of whether the current source has played at all to
+      // implement a very limited played()
+      this.hasStarted_ = false;
+      this.on('playing', function () {
+        this.hasStarted_ = true;
+      });
+      this.on('loadstart', function () {
+        this.hasStarted_ = false;
+      });
+      ALL.names.forEach(name => {
+        const props = ALL[name];
+        if (options && options[props.getterName]) {
+          this[props.privateName] = options[props.getterName];
+        }
+      });
+
+      // Manually track progress in cases where the browser/tech doesn't report it.
+      if (!this.featuresProgressEvents) {
+        this.manualProgressOn();
+      }
+
+      // Manually track timeupdates in cases where the browser/tech doesn't report it.
+      if (!this.featuresTimeupdateEvents) {
+        this.manualTimeUpdatesOn();
+      }
+      ['Text', 'Audio', 'Video'].forEach(track => {
+        if (options[`native${track}Tracks`] === false) {
+          this[`featuresNative${track}Tracks`] = false;
+        }
+      });
+      if (options.nativeCaptions === false || options.nativeTextTracks === false) {
+        this.featuresNativeTextTracks = false;
+      } else if (options.nativeCaptions === true || options.nativeTextTracks === true) {
+        this.featuresNativeTextTracks = true;
+      }
+      if (!this.featuresNativeTextTracks) {
+        this.emulateTextTracks();
+      }
+      this.preloadTextTracks = options.preloadTextTracks !== false;
+      this.autoRemoteTextTracks_ = new ALL.text.ListClass();
+      this.initTrackListeners();
+
+      // Turn on component tap events only if not using native controls
+      if (!options.nativeControlsForTouch) {
+        this.emitTapEvents();
+      }
+      if (this.constructor) {
+        this.name_ = this.constructor.name || 'Unknown Tech';
+      }
+    }
+
+    /**
+     * A special function to trigger source set in a way that will allow player
+     * to re-trigger if the player or tech are not ready yet.
+     *
+     * @fires Tech#sourceset
+     * @param {string} src The source string at the time of the source changing.
+     */
+    triggerSourceset(src) {
+      if (!this.isReady_) {
+        // on initial ready we have to trigger source set
+        // 1ms after ready so that player can watch for it.
+        this.one('ready', () => this.setTimeout(() => this.triggerSourceset(src), 1));
+      }
+
+      /**
+       * Fired when the source is set on the tech causing the media element
+       * to reload.
+       *
+       * @see {@link Player#event:sourceset}
+       * @event Tech#sourceset
+       * @type {Event}
+       */
+      this.trigger({
+        src,
+        type: 'sourceset'
+      });
+    }
+
+    /* Fallbacks for unsupported event types
+    ================================================================================ */
+
+    /**
+     * Polyfill the `progress` event for browsers that don't support it natively.
+     *
+     * @see {@link Tech#trackProgress}
+     */
+    manualProgressOn() {
+      this.on('durationchange', this.onDurationChange_);
+      this.manualProgress = true;
+
+      // Trigger progress watching when a source begins loading
+      this.one('ready', this.trackProgress_);
+    }
+
+    /**
+     * Turn off the polyfill for `progress` events that was created in
+     * {@link Tech#manualProgressOn}
+     */
+    manualProgressOff() {
+      this.manualProgress = false;
+      this.stopTrackingProgress();
+      this.off('durationchange', this.onDurationChange_);
+    }
+
+    /**
+     * This is used to trigger a `progress` event when the buffered percent changes. It
+     * sets an interval function that will be called every 500 milliseconds to check if the
+     * buffer end percent has changed.
+     *
+     * > This function is called by {@link Tech#manualProgressOn}
+     *
+     * @param {Event} event
+     *        The `ready` event that caused this to run.
+     *
+     * @listens Tech#ready
+     * @fires Tech#progress
+     */
+    trackProgress(event) {
+      this.stopTrackingProgress();
+      this.progressInterval = this.setInterval(bind_(this, function () {
+        // Don't trigger unless buffered amount is greater than last time
+
+        const numBufferedPercent = this.bufferedPercent();
+        if (this.bufferedPercent_ !== numBufferedPercent) {
+          /**
+           * See {@link Player#progress}
+           *
+           * @event Tech#progress
+           * @type {Event}
+           */
+          this.trigger('progress');
+        }
+        this.bufferedPercent_ = numBufferedPercent;
+        if (numBufferedPercent === 1) {
+          this.stopTrackingProgress();
+        }
+      }), 500);
+    }
+
+    /**
+     * Update our internal duration on a `durationchange` event by calling
+     * {@link Tech#duration}.
+     *
+     * @param {Event} event
+     *        The `durationchange` event that caused this to run.
+     *
+     * @listens Tech#durationchange
+     */
+    onDurationChange(event) {
+      this.duration_ = this.duration();
+    }
+
+    /**
+     * Get and create a `TimeRange` object for buffering.
+     *
+     * @return { import('../utils/time').TimeRange }
+     *         The time range object that was created.
+     */
+    buffered() {
+      return createTimeRanges$1(0, 0);
+    }
+
+    /**
+     * Get the percentage of the current video that is currently buffered.
+     *
+     * @return {number}
+     *         A number from 0 to 1 that represents the decimal percentage of the
+     *         video that is buffered.
+     *
+     */
+    bufferedPercent() {
+      return bufferedPercent(this.buffered(), this.duration_);
+    }
+
+    /**
+     * Turn off the polyfill for `progress` events that was created in
+     * {@link Tech#manualProgressOn}
+     * Stop manually tracking progress events by clearing the interval that was set in
+     * {@link Tech#trackProgress}.
+     */
+    stopTrackingProgress() {
+      this.clearInterval(this.progressInterval);
+    }
+
+    /**
+     * Polyfill the `timeupdate` event for browsers that don't support it.
+     *
+     * @see {@link Tech#trackCurrentTime}
+     */
+    manualTimeUpdatesOn() {
+      this.manualTimeUpdates = true;
+      this.on('play', this.trackCurrentTime_);
+      this.on('pause', this.stopTrackingCurrentTime_);
+    }
+
+    /**
+     * Turn off the polyfill for `timeupdate` events that was created in
+     * {@link Tech#manualTimeUpdatesOn}
+     */
+    manualTimeUpdatesOff() {
+      this.manualTimeUpdates = false;
+      this.stopTrackingCurrentTime();
+      this.off('play', this.trackCurrentTime_);
+      this.off('pause', this.stopTrackingCurrentTime_);
+    }
+
+    /**
+     * Sets up an interval function to track current time and trigger `timeupdate` every
+     * 250 milliseconds.
+     *
+     * @listens Tech#play
+     * @triggers Tech#timeupdate
+     */
+    trackCurrentTime() {
+      if (this.currentTimeInterval) {
+        this.stopTrackingCurrentTime();
+      }
+      this.currentTimeInterval = this.setInterval(function () {
+        /**
+         * Triggered at an interval of 250ms to indicated that time is passing in the video.
+         *
+         * @event Tech#timeupdate
+         * @type {Event}
+         */
+        this.trigger({
+          type: 'timeupdate',
+          target: this,
+          manuallyTriggered: true
+        });
+
+        // 42 = 24 fps // 250 is what Webkit uses // FF uses 15
+      }, 250);
+    }
+
+    /**
+     * Stop the interval function created in {@link Tech#trackCurrentTime} so that the
+     * `timeupdate` event is no longer triggered.
+     *
+     * @listens {Tech#pause}
+     */
+    stopTrackingCurrentTime() {
+      this.clearInterval(this.currentTimeInterval);
+
+      // #1002 - if the video ends right before the next timeupdate would happen,
+      // the progress bar won't make it all the way to the end
+      this.trigger({
+        type: 'timeupdate',
+        target: this,
+        manuallyTriggered: true
+      });
+    }
+
+    /**
+     * Turn off all event polyfills, clear the `Tech`s {@link AudioTrackList},
+     * {@link VideoTrackList}, and {@link TextTrackList}, and dispose of this Tech.
+     *
+     * @fires Component#dispose
+     */
+    dispose() {
+      // clear out all tracks because we can't reuse them between techs
+      this.clearTracks(NORMAL.names);
+
+      // Turn off any manual progress or timeupdate tracking
+      if (this.manualProgress) {
+        this.manualProgressOff();
+      }
+      if (this.manualTimeUpdates) {
+        this.manualTimeUpdatesOff();
+      }
+      super.dispose();
+    }
+
+    /**
+     * Clear out a single `TrackList` or an array of `TrackLists` given their names.
+     *
+     * > Note: Techs without source handlers should call this between sources for `video`
+     *         & `audio` tracks. You don't want to use them between tracks!
+     *
+     * @param {string[]|string} types
+     *        TrackList names to clear, valid names are `video`, `audio`, and
+     *        `text`.
+     */
+    clearTracks(types) {
+      types = [].concat(types);
+      // clear out all tracks because we can't reuse them between techs
+      types.forEach(type => {
+        const list = this[`${type}Tracks`]() || [];
+        let i = list.length;
+        while (i--) {
+          const track = list[i];
+          if (type === 'text') {
+            this.removeRemoteTextTrack(track);
+          }
+          list.removeTrack(track);
+        }
+      });
+    }
+
+    /**
+     * Remove any TextTracks added via addRemoteTextTrack that are
+     * flagged for automatic garbage collection
+     */
+    cleanupAutoTextTracks() {
+      const list = this.autoRemoteTextTracks_ || [];
+      let i = list.length;
+      while (i--) {
+        const track = list[i];
+        this.removeRemoteTextTrack(track);
+      }
+    }
+
+    /**
+     * Reset the tech, which will removes all sources and reset the internal readyState.
+     *
+     * @abstract
+     */
+    reset() {}
+
+    /**
+     * Get the value of `crossOrigin` from the tech.
+     *
+     * @abstract
+     *
+     * @see {Html5#crossOrigin}
+     */
+    crossOrigin() {}
+
+    /**
+     * Set the value of `crossOrigin` on the tech.
+     *
+     * @abstract
+     *
+     * @param {string} crossOrigin the crossOrigin value
+     * @see {Html5#setCrossOrigin}
+     */
+    setCrossOrigin() {}
+
+    /**
+     * Get or set an error on the Tech.
+     *
+     * @param {MediaError} [err]
+     *        Error to set on the Tech
+     *
+     * @return {MediaError|null}
+     *         The current error object on the tech, or null if there isn't one.
+     */
+    error(err) {
+      if (err !== undefined) {
+        this.error_ = new MediaError(err);
+        this.trigger('error');
+      }
+      return this.error_;
+    }
+
+    /**
+     * Returns the `TimeRange`s that have been played through for the current source.
+     *
+     * > NOTE: This implementation is incomplete. It does not track the played `TimeRange`.
+     *         It only checks whether the source has played at all or not.
+     *
+     * @return { import('../utils/time').TimeRange }
+     *         - A single time range if this video has played
+     *         - An empty set of ranges if not.
+     */
+    played() {
+      if (this.hasStarted_) {
+        return createTimeRanges$1(0, 0);
+      }
+      return createTimeRanges$1();
+    }
+
+    /**
+     * Start playback
+     *
+     * @abstract
+     *
+     * @see {Html5#play}
+     */
+    play() {}
+
+    /**
+     * Set whether we are scrubbing or not
+     *
+     * @abstract
+     * @param {boolean} _isScrubbing
+     *                  - true for we are currently scrubbing
+     *                  - false for we are no longer scrubbing
+     *
+     * @see {Html5#setScrubbing}
+     */
+    setScrubbing(_isScrubbing) {}
+
+    /**
+     * Get whether we are scrubbing or not
+     *
+     * @abstract
+     *
+     * @see {Html5#scrubbing}
+     */
+    scrubbing() {}
+
+    /**
+     * Causes a manual time update to occur if {@link Tech#manualTimeUpdatesOn} was
+     * previously called.
+     *
+     * @param {number} _seconds
+     *        Set the current time of the media to this.
+     * @fires Tech#timeupdate
+     */
+    setCurrentTime(_seconds) {
+      // improve the accuracy of manual timeupdates
+      if (this.manualTimeUpdates) {
+        /**
+         * A manual `timeupdate` event.
+         *
+         * @event Tech#timeupdate
+         * @type {Event}
+         */
+        this.trigger({
+          type: 'timeupdate',
+          target: this,
+          manuallyTriggered: true
+        });
+      }
+    }
+
+    /**
+     * Turn on listeners for {@link VideoTrackList}, {@link {AudioTrackList}, and
+     * {@link TextTrackList} events.
+     *
+     * This adds {@link EventTarget~EventListeners} for `addtrack`, and  `removetrack`.
+     *
+     * @fires Tech#audiotrackchange
+     * @fires Tech#videotrackchange
+     * @fires Tech#texttrackchange
+     */
+    initTrackListeners() {
+      /**
+        * Triggered when tracks are added or removed on the Tech {@link AudioTrackList}
+        *
+        * @event Tech#audiotrackchange
+        * @type {Event}
+        */
+
+      /**
+        * Triggered when tracks are added or removed on the Tech {@link VideoTrackList}
+        *
+        * @event Tech#videotrackchange
+        * @type {Event}
+        */
+
+      /**
+        * Triggered when tracks are added or removed on the Tech {@link TextTrackList}
+        *
+        * @event Tech#texttrackchange
+        * @type {Event}
+        */
+      NORMAL.names.forEach(name => {
+        const props = NORMAL[name];
+        const trackListChanges = () => {
+          this.trigger(`${name}trackchange`);
+        };
+        const tracks = this[props.getterName]();
+        tracks.addEventListener('removetrack', trackListChanges);
+        tracks.addEventListener('addtrack', trackListChanges);
+        this.on('dispose', () => {
+          tracks.removeEventListener('removetrack', trackListChanges);
+          tracks.removeEventListener('addtrack', trackListChanges);
+        });
+      });
+    }
+
+    /**
+     * Emulate TextTracks using vtt.js if necessary
+     *
+     * @fires Tech#vttjsloaded
+     * @fires Tech#vttjserror
+     */
+    addWebVttScript_() {
+      if (window.WebVTT) {
+        return;
+      }
+
+      // Initially, Tech.el_ is a child of a dummy-div wait until the Component system
+      // signals that the Tech is ready at which point Tech.el_ is part of the DOM
+      // before inserting the WebVTT script
+      if (document.body.contains(this.el())) {
+        // load via require if available and vtt.js script location was not passed in
+        // as an option. novtt builds will turn the above require call into an empty object
+        // which will cause this if check to always fail.
+        if (!this.options_['vtt.js'] && isPlain(browserIndex) && Object.keys(browserIndex).length > 0) {
+          this.trigger('vttjsloaded');
+          return;
+        }
+
+        // load vtt.js via the script location option or the cdn of no location was
+        // passed in
+        const script = document.createElement('script');
+        script.src = this.options_['vtt.js'] || 'https://vjs.zencdn.net/vttjs/0.14.1/vtt.min.js';
+        script.onload = () => {
+          /**
+           * Fired when vtt.js is loaded.
+           *
+           * @event Tech#vttjsloaded
+           * @type {Event}
+           */
+          this.trigger('vttjsloaded');
+        };
+        script.onerror = () => {
+          /**
+           * Fired when vtt.js was not loaded due to an error
+           *
+           * @event Tech#vttjsloaded
+           * @type {Event}
+           */
+          this.trigger('vttjserror');
+        };
+        this.on('dispose', () => {
+          script.onload = null;
+          script.onerror = null;
+        });
+        // but have not loaded yet and we set it to true before the inject so that
+        // we don't overwrite the injected window.WebVTT if it loads right away
+        window.WebVTT = true;
+        this.el().parentNode.appendChild(script);
+      } else {
+        this.ready(this.addWebVttScript_);
+      }
+    }
+
+    /**
+     * Emulate texttracks
+     *
+     */
+    emulateTextTracks() {
+      const tracks = this.textTracks();
+      const remoteTracks = this.remoteTextTracks();
+      const handleAddTrack = e => tracks.addTrack(e.track);
+      const handleRemoveTrack = e => tracks.removeTrack(e.track);
+      remoteTracks.on('addtrack', handleAddTrack);
+      remoteTracks.on('removetrack', handleRemoveTrack);
+      this.addWebVttScript_();
+      const updateDisplay = () => this.trigger('texttrackchange');
+      const textTracksChanges = () => {
+        updateDisplay();
+        for (let i = 0; i < tracks.length; i++) {
+          const track = tracks[i];
+          track.removeEventListener('cuechange', updateDisplay);
+          if (track.mode === 'showing') {
+            track.addEventListener('cuechange', updateDisplay);
+          }
+        }
+      };
+      textTracksChanges();
+      tracks.addEventListener('change', textTracksChanges);
+      tracks.addEventListener('addtrack', textTracksChanges);
+      tracks.addEventListener('removetrack', textTracksChanges);
+      this.on('dispose', function () {
+        remoteTracks.off('addtrack', handleAddTrack);
+        remoteTracks.off('removetrack', handleRemoveTrack);
+        tracks.removeEventListener('change', textTracksChanges);
+        tracks.removeEventListener('addtrack', textTracksChanges);
+        tracks.removeEventListener('removetrack', textTracksChanges);
+        for (let i = 0; i < tracks.length; i++) {
+          const track = tracks[i];
+          track.removeEventListener('cuechange', updateDisplay);
+        }
+      });
+    }
+
+    /**
+     * Create and returns a remote {@link TextTrack} object.
+     *
+     * @param {string} kind
+     *        `TextTrack` kind (subtitles, captions, descriptions, chapters, or metadata)
+     *
+     * @param {string} [label]
+     *        Label to identify the text track
+     *
+     * @param {string} [language]
+     *        Two letter language abbreviation
+     *
+     * @return {TextTrack}
+     *         The TextTrack that gets created.
+     */
+    addTextTrack(kind, label, language) {
+      if (!kind) {
+        throw new Error('TextTrack kind is required but was not provided');
+      }
+      return createTrackHelper(this, kind, label, language);
+    }
+
+    /**
+     * Create an emulated TextTrack for use by addRemoteTextTrack
+     *
+     * This is intended to be overridden by classes that inherit from
+     * Tech in order to create native or custom TextTracks.
+     *
+     * @param {Object} options
+     *        The object should contain the options to initialize the TextTrack with.
+     *
+     * @param {string} [options.kind]
+     *        `TextTrack` kind (subtitles, captions, descriptions, chapters, or metadata).
+     *
+     * @param {string} [options.label].
+     *        Label to identify the text track
+     *
+     * @param {string} [options.language]
+     *        Two letter language abbreviation.
+     *
+     * @return {HTMLTrackElement}
+     *         The track element that gets created.
+     */
+    createRemoteTextTrack(options) {
+      const track = merge$2(options, {
+        tech: this
+      });
+      return new REMOTE.remoteTextEl.TrackClass(track);
+    }
+
+    /**
+     * Creates a remote text track object and returns an html track element.
+     *
+     * > Note: This can be an emulated {@link HTMLTrackElement} or a native one.
+     *
+     * @param {Object} options
+     *        See {@link Tech#createRemoteTextTrack} for more detailed properties.
+     *
+     * @param {boolean} [manualCleanup=false]
+     *        - When false: the TextTrack will be automatically removed from the video
+     *          element whenever the source changes
+     *        - When True: The TextTrack will have to be cleaned up manually
+     *
+     * @return {HTMLTrackElement}
+     *         An Html Track Element.
+     *
+     */
+    addRemoteTextTrack(options = {}, manualCleanup) {
+      const htmlTrackElement = this.createRemoteTextTrack(options);
+      if (typeof manualCleanup !== 'boolean') {
+        manualCleanup = false;
+      }
+
+      // store HTMLTrackElement and TextTrack to remote list
+      this.remoteTextTrackEls().addTrackElement_(htmlTrackElement);
+      this.remoteTextTracks().addTrack(htmlTrackElement.track);
+      if (manualCleanup === false) {
+        // create the TextTrackList if it doesn't exist
+        this.ready(() => this.autoRemoteTextTracks_.addTrack(htmlTrackElement.track));
+      }
+      return htmlTrackElement;
+    }
+
+    /**
+     * Remove a remote text track from the remote `TextTrackList`.
+     *
+     * @param {TextTrack} track
+     *        `TextTrack` to remove from the `TextTrackList`
+     */
+    removeRemoteTextTrack(track) {
+      const trackElement = this.remoteTextTrackEls().getTrackElementByTrack_(track);
+
+      // remove HTMLTrackElement and TextTrack from remote list
+      this.remoteTextTrackEls().removeTrackElement_(trackElement);
+      this.remoteTextTracks().removeTrack(track);
+      this.autoRemoteTextTracks_.removeTrack(track);
+    }
+
+    /**
+     * Gets available media playback quality metrics as specified by the W3C's Media
+     * Playback Quality API.
+     *
+     * @see [Spec]{@link https://wicg.github.io/media-playback-quality}
+     *
+     * @return {Object}
+     *         An object with supported media playback quality metrics
+     *
+     * @abstract
+     */
+    getVideoPlaybackQuality() {
+      return {};
+    }
+
+    /**
+     * Attempt to create a floating video window always on top of other windows
+     * so that users may continue consuming media while they interact with other
+     * content sites, or applications on their device.
+     *
+     * @see [Spec]{@link https://wicg.github.io/picture-in-picture}
+     *
+     * @return {Promise|undefined}
+     *         A promise with a Picture-in-Picture window if the browser supports
+     *         Promises (or one was passed in as an option). It returns undefined
+     *         otherwise.
+     *
+     * @abstract
+     */
+    requestPictureInPicture() {
+      return Promise.reject();
+    }
+
+    /**
+     * A method to check for the value of the 'disablePictureInPicture' <video> property.
+     * Defaults to true, as it should be considered disabled if the tech does not support pip
+     *
+     * @abstract
+     */
+    disablePictureInPicture() {
+      return true;
+    }
+
+    /**
+     * A method to set or unset the 'disablePictureInPicture' <video> property.
+     *
+     * @abstract
+     */
+    setDisablePictureInPicture() {}
+
+    /**
+     * A fallback implementation of requestVideoFrameCallback using requestAnimationFrame
+     *
+     * @param {function} cb
+     * @return {number} request id
+     */
+    requestVideoFrameCallback(cb) {
+      const id = newGUID();
+      if (!this.isReady_ || this.paused()) {
+        this.queuedHanders_.add(id);
+        this.one('playing', () => {
+          if (this.queuedHanders_.has(id)) {
+            this.queuedHanders_.delete(id);
+            cb();
+          }
+        });
+      } else {
+        this.requestNamedAnimationFrame(id, cb);
+      }
+      return id;
+    }
+
+    /**
+     * A fallback implementation of cancelVideoFrameCallback
+     *
+     * @param {number} id id of callback to be cancelled
+     */
+    cancelVideoFrameCallback(id) {
+      if (this.queuedHanders_.has(id)) {
+        this.queuedHanders_.delete(id);
+      } else {
+        this.cancelNamedAnimationFrame(id);
+      }
+    }
+
+    /**
+     * A method to set a poster from a `Tech`.
+     *
+     * @abstract
+     */
+    setPoster() {}
+
+    /**
+     * A method to check for the presence of the 'playsinline' <video> attribute.
+     *
+     * @abstract
+     */
+    playsinline() {}
+
+    /**
+     * A method to set or unset the 'playsinline' <video> attribute.
+     *
+     * @abstract
+     */
+    setPlaysinline() {}
+
+    /**
+     * Attempt to force override of native audio tracks.
+     *
+     * @param {boolean} override - If set to true native audio will be overridden,
+     * otherwise native audio will potentially be used.
+     *
+     * @abstract
+     */
+    overrideNativeAudioTracks(override) {}
+
+    /**
+     * Attempt to force override of native video tracks.
+     *
+     * @param {boolean} override - If set to true native video will be overridden,
+     * otherwise native video will potentially be used.
+     *
+     * @abstract
+     */
+    overrideNativeVideoTracks(override) {}
+
+    /**
+     * Check if the tech can support the given mime-type.
+     *
+     * The base tech does not support any type, but source handlers might
+     * overwrite this.
+     *
+     * @param  {string} _type
+     *         The mimetype to check for support
+     *
+     * @return {string}
+     *         'probably', 'maybe', or empty string
+     *
+     * @see [Spec]{@link https://developer.mozilla.org/en-US/docs/Web/API/HTMLMediaElement/canPlayType}
+     *
+     * @abstract
+     */
+    canPlayType(_type) {
+      return '';
+    }
+
+    /**
+     * Check if the type is supported by this tech.
+     *
+     * The base tech does not support any type, but source handlers might
+     * overwrite this.
+     *
+     * @param {string} _type
+     *        The media type to check
+     * @return {string} Returns the native video element's response
+     */
+    static canPlayType(_type) {
+      return '';
+    }
+
+    /**
+     * Check if the tech can support the given source
+     *
+     * @param {Object} srcObj
+     *        The source object
+     * @param {Object} options
+     *        The options passed to the tech
+     * @return {string} 'probably', 'maybe', or '' (empty string)
+     */
+    static canPlaySource(srcObj, options) {
+      return Tech.canPlayType(srcObj.type);
+    }
+
+    /*
+     * Return whether the argument is a Tech or not.
+     * Can be passed either a Class like `Html5` or a instance like `player.tech_`
+     *
+     * @param {Object} component
+     *        The item to check
+     *
+     * @return {boolean}
+     *         Whether it is a tech or not
+     *         - True if it is a tech
+     *         - False if it is not
+     */
+    static isTech(component) {
+      return component.prototype instanceof Tech || component instanceof Tech || component === Tech;
+    }
+
+    /**
+     * Registers a `Tech` into a shared list for videojs.
+     *
+     * @param {string} name
+     *        Name of the `Tech` to register.
+     *
+     * @param {Object} tech
+     *        The `Tech` class to register.
+     */
+    static registerTech(name, tech) {
+      if (!Tech.techs_) {
+        Tech.techs_ = {};
+      }
+      if (!Tech.isTech(tech)) {
+        throw new Error(`Tech ${name} must be a Tech`);
+      }
+      if (!Tech.canPlayType) {
+        throw new Error('Techs must have a static canPlayType method on them');
+      }
+      if (!Tech.canPlaySource) {
+        throw new Error('Techs must have a static canPlaySource method on them');
+      }
+      name = toTitleCase$1(name);
+      Tech.techs_[name] = tech;
+      Tech.techs_[toLowerCase(name)] = tech;
+      if (name !== 'Tech') {
+        // camel case the techName for use in techOrder
+        Tech.defaultTechOrder_.push(name);
+      }
+      return tech;
+    }
+
+    /**
+     * Get a `Tech` from the shared list by name.
+     *
+     * @param {string} name
+     *        `camelCase` or `TitleCase` name of the Tech to get
+     *
+     * @return {Tech|undefined}
+     *         The `Tech` or undefined if there was no tech with the name requested.
+     */
+    static getTech(name) {
+      if (!name) {
+        return;
+      }
+      if (Tech.techs_ && Tech.techs_[name]) {
+        return Tech.techs_[name];
+      }
+      name = toTitleCase$1(name);
+      if (window && window.videojs && window.videojs[name]) {
+        log$1.warn(`The ${name} tech was added to the videojs object when it should be registered using videojs.registerTech(name, tech)`);
+        return window.videojs[name];
+      }
+    }
+  }
+
+  /**
+   * Get the {@link VideoTrackList}
+   *
+   * @returns {VideoTrackList}
+   * @method Tech.prototype.videoTracks
+   */
+
+  /**
+   * Get the {@link AudioTrackList}
+   *
+   * @returns {AudioTrackList}
+   * @method Tech.prototype.audioTracks
+   */
+
+  /**
+   * Get the {@link TextTrackList}
+   *
+   * @returns {TextTrackList}
+   * @method Tech.prototype.textTracks
+   */
+
+  /**
+   * Get the remote element {@link TextTrackList}
+   *
+   * @returns {TextTrackList}
+   * @method Tech.prototype.remoteTextTracks
+   */
+
+  /**
+   * Get the remote element {@link HtmlTrackElementList}
+   *
+   * @returns {HtmlTrackElementList}
+   * @method Tech.prototype.remoteTextTrackEls
+   */
+
+  ALL.names.forEach(function (name) {
+    const props = ALL[name];
+    Tech.prototype[props.getterName] = function () {
+      this[props.privateName] = this[props.privateName] || new props.ListClass();
+      return this[props.privateName];
+    };
+  });
+
+  /**
+   * List of associated text tracks
+   *
+   * @type {TextTrackList}
+   * @private
+   * @property Tech#textTracks_
+   */
+
+  /**
+   * List of associated audio tracks.
+   *
+   * @type {AudioTrackList}
+   * @private
+   * @property Tech#audioTracks_
+   */
+
+  /**
+   * List of associated video tracks.
+   *
+   * @type {VideoTrackList}
+   * @private
+   * @property Tech#videoTracks_
+   */
+
+  /**
+   * Boolean indicating whether the `Tech` supports volume control.
+   *
+   * @type {boolean}
+   * @default
+   */
+  Tech.prototype.featuresVolumeControl = true;
+
+  /**
+   * Boolean indicating whether the `Tech` supports muting volume.
+   *
+   * @type {boolean}
+   * @default
+   */
+  Tech.prototype.featuresMuteControl = true;
+
+  /**
+   * Boolean indicating whether the `Tech` supports fullscreen resize control.
+   * Resizing plugins using request fullscreen reloads the plugin
+   *
+   * @type {boolean}
+   * @default
+   */
+  Tech.prototype.featuresFullscreenResize = false;
+
+  /**
+   * Boolean indicating whether the `Tech` supports changing the speed at which the video
+   * plays. Examples:
+   *   - Set player to play 2x (twice) as fast
+   *   - Set player to play 0.5x (half) as fast
+   *
+   * @type {boolean}
+   * @default
+   */
+  Tech.prototype.featuresPlaybackRate = false;
+
+  /**
+   * Boolean indicating whether the `Tech` supports the `progress` event.
+   * This will be used to determine if {@link Tech#manualProgressOn} should be called.
+   *
+   * @type {boolean}
+   * @default
+   */
+  Tech.prototype.featuresProgressEvents = false;
+
+  /**
+   * Boolean indicating whether the `Tech` supports the `sourceset` event.
+   *
+   * A tech should set this to `true` and then use {@link Tech#triggerSourceset}
+   * to trigger a {@link Tech#event:sourceset} at the earliest time after getting
+   * a new source.
+   *
+   * @type {boolean}
+   * @default
+   */
+  Tech.prototype.featuresSourceset = false;
+
+  /**
+   * Boolean indicating whether the `Tech` supports the `timeupdate` event.
+   * This will be used to determine if {@link Tech#manualTimeUpdates} should be called.
+   *
+   * @type {boolean}
+   * @default
+   */
+  Tech.prototype.featuresTimeupdateEvents = false;
+
+  /**
+   * Boolean indicating whether the `Tech` supports the native `TextTrack`s.
+   * This will help us integrate with native `TextTrack`s if the browser supports them.
+   *
+   * @type {boolean}
+   * @default
+   */
+  Tech.prototype.featuresNativeTextTracks = false;
+
+  /**
+   * Boolean indicating whether the `Tech` supports `requestVideoFrameCallback`.
+   *
+   * @type {boolean}
+   * @default
+   */
+  Tech.prototype.featuresVideoFrameCallback = false;
+
+  /**
+   * A functional mixin for techs that want to use the Source Handler pattern.
+   * Source handlers are scripts for handling specific formats.
+   * The source handler pattern is used for adaptive formats (HLS, DASH) that
+   * manually load video data and feed it into a Source Buffer (Media Source Extensions)
+   * Example: `Tech.withSourceHandlers.call(MyTech);`
+   *
+   * @param {Tech} _Tech
+   *        The tech to add source handler functions to.
+   *
+   * @mixes Tech~SourceHandlerAdditions
+   */
+  Tech.withSourceHandlers = function (_Tech) {
+    /**
+     * Register a source handler
+     *
+     * @param {Function} handler
+     *        The source handler class
+     *
+     * @param {number} [index]
+     *        Register it at the following index
+     */
+    _Tech.registerSourceHandler = function (handler, index) {
+      let handlers = _Tech.sourceHandlers;
+      if (!handlers) {
+        handlers = _Tech.sourceHandlers = [];
+      }
+      if (index === undefined) {
+        // add to the end of the list
+        index = handlers.length;
+      }
+      handlers.splice(index, 0, handler);
+    };
+
+    /**
+     * Check if the tech can support the given type. Also checks the
+     * Techs sourceHandlers.
+     *
+     * @param {string} type
+     *         The mimetype to check.
+     *
+     * @return {string}
+     *         'probably', 'maybe', or '' (empty string)
+     */
+    _Tech.canPlayType = function (type) {
+      const handlers = _Tech.sourceHandlers || [];
+      let can;
+      for (let i = 0; i < handlers.length; i++) {
+        can = handlers[i].canPlayType(type);
+        if (can) {
+          return can;
+        }
+      }
+      return '';
+    };
+
+    /**
+     * Returns the first source handler that supports the source.
+     *
+     * TODO: Answer question: should 'probably' be prioritized over 'maybe'
+     *
+     * @param {SourceObject} source
+     *        The source object
+     *
+     * @param {Object} options
+     *        The options passed to the tech
+     *
+     * @return {SourceHandler|null}
+     *          The first source handler that supports the source or null if
+     *          no SourceHandler supports the source
+     */
+    _Tech.selectSourceHandler = function (source, options) {
+      const handlers = _Tech.sourceHandlers || [];
+      let can;
+      for (let i = 0; i < handlers.length; i++) {
+        can = handlers[i].canHandleSource(source, options);
+        if (can) {
+          return handlers[i];
+        }
+      }
+      return null;
+    };
+
+    /**
+     * Check if the tech can support the given source.
+     *
+     * @param {SourceObject} srcObj
+     *        The source object
+     *
+     * @param {Object} options
+     *        The options passed to the tech
+     *
+     * @return {string}
+     *         'probably', 'maybe', or '' (empty string)
+     */
+    _Tech.canPlaySource = function (srcObj, options) {
+      const sh = _Tech.selectSourceHandler(srcObj, options);
+      if (sh) {
+        return sh.canHandleSource(srcObj, options);
+      }
+      return '';
+    };
+
+    /**
+     * When using a source handler, prefer its implementation of
+     * any function normally provided by the tech.
+     */
+    const deferrable = ['seekable', 'seeking', 'duration'];
+
+    /**
+     * A wrapper around {@link Tech#seekable} that will call a `SourceHandler`s seekable
+     * function if it exists, with a fallback to the Techs seekable function.
+     *
+     * @method _Tech.seekable
+     */
+
+    /**
+     * A wrapper around {@link Tech#duration} that will call a `SourceHandler`s duration
+     * function if it exists, otherwise it will fallback to the techs duration function.
+     *
+     * @method _Tech.duration
+     */
+
+    deferrable.forEach(function (fnName) {
+      const originalFn = this[fnName];
+      if (typeof originalFn !== 'function') {
+        return;
+      }
+      this[fnName] = function () {
+        if (this.sourceHandler_ && this.sourceHandler_[fnName]) {
+          return this.sourceHandler_[fnName].apply(this.sourceHandler_, arguments);
+        }
+        return originalFn.apply(this, arguments);
+      };
+    }, _Tech.prototype);
+
+    /**
+     * Create a function for setting the source using a source object
+     * and source handlers.
+     * Should never be called unless a source handler was found.
+     *
+     * @param {SourceObject} source
+     *        A source object with src and type keys
+     */
+    _Tech.prototype.setSource = function (source) {
+      let sh = _Tech.selectSourceHandler(source, this.options_);
+      if (!sh) {
+        // Fall back to a native source handler when unsupported sources are
+        // deliberately set
+        if (_Tech.nativeSourceHandler) {
+          sh = _Tech.nativeSourceHandler;
+        } else {
+          log$1.error('No source handler found for the current source.');
+        }
+      }
+
+      // Dispose any existing source handler
+      this.disposeSourceHandler();
+      this.off('dispose', this.disposeSourceHandler_);
+      if (sh !== _Tech.nativeSourceHandler) {
+        this.currentSource_ = source;
+      }
+      this.sourceHandler_ = sh.handleSource(source, this, this.options_);
+      this.one('dispose', this.disposeSourceHandler_);
+    };
+
+    /**
+     * Clean up any existing SourceHandlers and listeners when the Tech is disposed.
+     *
+     * @listens Tech#dispose
+     */
+    _Tech.prototype.disposeSourceHandler = function () {
+      // if we have a source and get another one
+      // then we are loading something new
+      // than clear all of our current tracks
+      if (this.currentSource_) {
+        this.clearTracks(['audio', 'video']);
+        this.currentSource_ = null;
+      }
+
+      // always clean up auto-text tracks
+      this.cleanupAutoTextTracks();
+      if (this.sourceHandler_) {
+        if (this.sourceHandler_.dispose) {
+          this.sourceHandler_.dispose();
+        }
+        this.sourceHandler_ = null;
+      }
+    };
+  };
+
+  // The base Tech class needs to be registered as a Component. It is the only
+  // Tech that can be registered as a Component.
+  Component$1.registerComponent('Tech', Tech);
+  Tech.registerTech('Tech', Tech);
+
+  /**
+   * A list of techs that should be added to techOrder on Players
+   *
+   * @private
+   */
+  Tech.defaultTechOrder_ = [];
+
+  /**
+   * @file middleware.js
+   * @module middleware
+   */
+  const middlewares = {};
+  const middlewareInstances = {};
+  const TERMINATOR = {};
+
+  /**
+   * A middleware object is a plain JavaScript object that has methods that
+   * match the {@link Tech} methods found in the lists of allowed
+   * {@link module:middleware.allowedGetters|getters},
+   * {@link module:middleware.allowedSetters|setters}, and
+   * {@link module:middleware.allowedMediators|mediators}.
+   *
+   * @typedef {Object} MiddlewareObject
+   */
+
+  /**
+   * A middleware factory function that should return a
+   * {@link module:middleware~MiddlewareObject|MiddlewareObject}.
+   *
+   * This factory will be called for each player when needed, with the player
+   * passed in as an argument.
+   *
+   * @callback MiddlewareFactory
+   * @param { import('../player').default } player
+   *        A Video.js player.
+   */
+
+  /**
+   * Define a middleware that the player should use by way of a factory function
+   * that returns a middleware object.
+   *
+   * @param  {string} type
+   *         The MIME type to match or `"*"` for all MIME types.
+   *
+   * @param  {MiddlewareFactory} middleware
+   *         A middleware factory function that will be executed for
+   *         matching types.
+   */
+  function use(type, middleware) {
+    middlewares[type] = middlewares[type] || [];
+    middlewares[type].push(middleware);
+  }
+
+  /**
+   * Asynchronously sets a source using middleware by recursing through any
+   * matching middlewares and calling `setSource` on each, passing along the
+   * previous returned value each time.
+   *
+   * @param  { import('../player').default } player
+   *         A {@link Player} instance.
+   *
+   * @param  {Tech~SourceObject} src
+   *         A source object.
+   *
+   * @param  {Function}
+   *         The next middleware to run.
+   */
+  function setSource(player, src, next) {
+    player.setTimeout(() => setSourceHelper(src, middlewares[src.type], next, player), 1);
+  }
+
+  /**
+   * When the tech is set, passes the tech to each middleware's `setTech` method.
+   *
+   * @param {Object[]} middleware
+   *        An array of middleware instances.
+   *
+   * @param { import('../tech/tech').default } tech
+   *        A Video.js tech.
+   */
+  function setTech(middleware, tech) {
+    middleware.forEach(mw => mw.setTech && mw.setTech(tech));
+  }
+
+  /**
+   * Calls a getter on the tech first, through each middleware
+   * from right to left to the player.
+   *
+   * @param  {Object[]} middleware
+   *         An array of middleware instances.
+   *
+   * @param  { import('../tech/tech').default } tech
+   *         The current tech.
+   *
+   * @param  {string} method
+   *         A method name.
+   *
+   * @return {*}
+   *         The final value from the tech after middleware has intercepted it.
+   */
+  function get(middleware, tech, method) {
+    return middleware.reduceRight(middlewareIterator(method), tech[method]());
+  }
+
+  /**
+   * Takes the argument given to the player and calls the setter method on each
+   * middleware from left to right to the tech.
+   *
+   * @param  {Object[]} middleware
+   *         An array of middleware instances.
+   *
+   * @param  { import('../tech/tech').default } tech
+   *         The current tech.
+   *
+   * @param  {string} method
+   *         A method name.
+   *
+   * @param  {*} arg
+   *         The value to set on the tech.
+   *
+   * @return {*}
+   *         The return value of the `method` of the `tech`.
+   */
+  function set(middleware, tech, method, arg) {
+    return tech[method](middleware.reduce(middlewareIterator(method), arg));
+  }
+
+  /**
+   * Takes the argument given to the player and calls the `call` version of the
+   * method on each middleware from left to right.
+   *
+   * Then, call the passed in method on the tech and return the result unchanged
+   * back to the player, through middleware, this time from right to left.
+   *
+   * @param  {Object[]} middleware
+   *         An array of middleware instances.
+   *
+   * @param  { import('../tech/tech').default } tech
+   *         The current tech.
+   *
+   * @param  {string} method
+   *         A method name.
+   *
+   * @param  {*} arg
+   *         The value to set on the tech.
+   *
+   * @return {*}
+   *         The return value of the `method` of the `tech`, regardless of the
+   *         return values of middlewares.
+   */
+  function mediate(middleware, tech, method, arg = null) {
+    const callMethod = 'call' + toTitleCase$1(method);
+    const middlewareValue = middleware.reduce(middlewareIterator(callMethod), arg);
+    const terminated = middlewareValue === TERMINATOR;
+    // deprecated. The `null` return value should instead return TERMINATOR to
+    // prevent confusion if a techs method actually returns null.
+    const returnValue = terminated ? null : tech[method](middlewareValue);
+    executeRight(middleware, method, returnValue, terminated);
+    return returnValue;
+  }
+
+  /**
+   * Enumeration of allowed getters where the keys are method names.
+   *
+   * @type {Object}
+   */
+  const allowedGetters = {
+    buffered: 1,
+    currentTime: 1,
+    duration: 1,
+    muted: 1,
+    played: 1,
+    paused: 1,
+    seekable: 1,
+    volume: 1,
+    ended: 1
+  };
+
+  /**
+   * Enumeration of allowed setters where the keys are method names.
+   *
+   * @type {Object}
+   */
+  const allowedSetters = {
+    setCurrentTime: 1,
+    setMuted: 1,
+    setVolume: 1
+  };
+
+  /**
+   * Enumeration of allowed mediators where the keys are method names.
+   *
+   * @type {Object}
+   */
+  const allowedMediators = {
+    play: 1,
+    pause: 1
+  };
+  function middlewareIterator(method) {
+    return (value, mw) => {
+      // if the previous middleware terminated, pass along the termination
+      if (value === TERMINATOR) {
+        return TERMINATOR;
+      }
+      if (mw[method]) {
+        return mw[method](value);
+      }
+      return value;
+    };
+  }
+  function executeRight(mws, method, value, terminated) {
+    for (let i = mws.length - 1; i >= 0; i--) {
+      const mw = mws[i];
+      if (mw[method]) {
+        mw[method](terminated, value);
+      }
+    }
+  }
+
+  /**
+   * Clear the middleware cache for a player.
+   *
+   * @param  { import('../player').default } player
+   *         A {@link Player} instance.
+   */
+  function clearCacheForPlayer(player) {
+    middlewareInstances[player.id()] = null;
+  }
+
+  /**
+   * {
+   *  [playerId]: [[mwFactory, mwInstance], ...]
+   * }
+   *
+   * @private
+   */
+  function getOrCreateFactory(player, mwFactory) {
+    const mws = middlewareInstances[player.id()];
+    let mw = null;
+    if (mws === undefined || mws === null) {
+      mw = mwFactory(player);
+      middlewareInstances[player.id()] = [[mwFactory, mw]];
+      return mw;
+    }
+    for (let i = 0; i < mws.length; i++) {
+      const [mwf, mwi] = mws[i];
+      if (mwf !== mwFactory) {
+        continue;
+      }
+      mw = mwi;
+    }
+    if (mw === null) {
+      mw = mwFactory(player);
+      mws.push([mwFactory, mw]);
+    }
+    return mw;
+  }
+  function setSourceHelper(src = {}, middleware = [], next, player, acc = [], lastRun = false) {
+    const [mwFactory, ...mwrest] = middleware;
+
+    // if mwFactory is a string, then we're at a fork in the road
+    if (typeof mwFactory === 'string') {
+      setSourceHelper(src, middlewares[mwFactory], next, player, acc, lastRun);
+
+      // if we have an mwFactory, call it with the player to get the mw,
+      // then call the mw's setSource method
+    } else if (mwFactory) {
+      const mw = getOrCreateFactory(player, mwFactory);
+
+      // if setSource isn't present, implicitly select this middleware
+      if (!mw.setSource) {
+        acc.push(mw);
+        return setSourceHelper(src, mwrest, next, player, acc, lastRun);
+      }
+      mw.setSource(Object.assign({}, src), function (err, _src) {
+        // something happened, try the next middleware on the current level
+        // make sure to use the old src
+        if (err) {
+          return setSourceHelper(src, mwrest, next, player, acc, lastRun);
+        }
+
+        // we've succeeded, now we need to go deeper
+        acc.push(mw);
+
+        // if it's the same type, continue down the current chain
+        // otherwise, we want to go down the new chain
+        setSourceHelper(_src, src.type === _src.type ? mwrest : middlewares[_src.type], next, player, acc, lastRun);
+      });
+    } else if (mwrest.length) {
+      setSourceHelper(src, mwrest, next, player, acc, lastRun);
+    } else if (lastRun) {
+      next(src, acc);
+    } else {
+      setSourceHelper(src, middlewares['*'], next, player, acc, true);
+    }
+  }
+
+  /**
+   * Mimetypes
+   *
+   * @see https://www.iana.org/assignments/media-types/media-types.xhtml
+   * @typedef Mimetypes~Kind
+   * @enum
+   */
+  const MimetypesKind = {
+    opus: 'video/ogg',
+    ogv: 'video/ogg',
+    mp4: 'video/mp4',
+    mov: 'video/mp4',
+    m4v: 'video/mp4',
+    mkv: 'video/x-matroska',
+    m4a: 'audio/mp4',
+    mp3: 'audio/mpeg',
+    aac: 'audio/aac',
+    caf: 'audio/x-caf',
+    flac: 'audio/flac',
+    oga: 'audio/ogg',
+    wav: 'audio/wav',
+    m3u8: 'application/x-mpegURL',
+    mpd: 'application/dash+xml',
+    jpg: 'image/jpeg',
+    jpeg: 'image/jpeg',
+    gif: 'image/gif',
+    png: 'image/png',
+    svg: 'image/svg+xml',
+    webp: 'image/webp'
+  };
+
+  /**
+   * Get the mimetype of a given src url if possible
+   *
+   * @param {string} src
+   *        The url to the src
+   *
+   * @return {string}
+   *         return the mimetype if it was known or empty string otherwise
+   */
+  const getMimetype = function (src = '') {
+    const ext = getFileExtension(src);
+    const mimetype = MimetypesKind[ext.toLowerCase()];
+    return mimetype || '';
+  };
+
+  /**
+   * Find the mime type of a given source string if possible. Uses the player
+   * source cache.
+   *
+   * @param { import('../player').default } player
+   *        The player object
+   *
+   * @param {string} src
+   *        The source string
+   *
+   * @return {string}
+   *         The type that was found
+   */
+  const findMimetype = (player, src) => {
+    if (!src) {
+      return '';
+    }
+
+    // 1. check for the type in the `source` cache
+    if (player.cache_.source.src === src && player.cache_.source.type) {
+      return player.cache_.source.type;
+    }
+
+    // 2. see if we have this source in our `currentSources` cache
+    const matchingSources = player.cache_.sources.filter(s => s.src === src);
+    if (matchingSources.length) {
+      return matchingSources[0].type;
+    }
+
+    // 3. look for the src url in source elements and use the type there
+    const sources = player.$$('source');
+    for (let i = 0; i < sources.length; i++) {
+      const s = sources[i];
+      if (s.type && s.src && s.src === src) {
+        return s.type;
+      }
+    }
+
+    // 4. finally fallback to our list of mime types based on src url extension
+    return getMimetype(src);
+  };
+
+  /**
+   * @module filter-source
+   */
+
+  /**
+   * Filter out single bad source objects or multiple source objects in an
+   * array. Also flattens nested source object arrays into a 1 dimensional
+   * array of source objects.
+   *
+   * @param {Tech~SourceObject|Tech~SourceObject[]} src
+   *        The src object to filter
+   *
+   * @return {Tech~SourceObject[]}
+   *         An array of sourceobjects containing only valid sources
+   *
+   * @private
+   */
+  const filterSource = function (src) {
+    // traverse array
+    if (Array.isArray(src)) {
+      let newsrc = [];
+      src.forEach(function (srcobj) {
+        srcobj = filterSource(srcobj);
+        if (Array.isArray(srcobj)) {
+          newsrc = newsrc.concat(srcobj);
+        } else if (isObject$1(srcobj)) {
+          newsrc.push(srcobj);
+        }
+      });
+      src = newsrc;
+    } else if (typeof src === 'string' && src.trim()) {
+      // convert string into object
+      src = [fixSource({
+        src
+      })];
+    } else if (isObject$1(src) && typeof src.src === 'string' && src.src && src.src.trim()) {
+      // src is already valid
+      src = [fixSource(src)];
+    } else {
+      // invalid source, turn it into an empty array
+      src = [];
+    }
+    return src;
+  };
+
+  /**
+   * Checks src mimetype, adding it when possible
+   *
+   * @param {Tech~SourceObject} src
+   *        The src object to check
+   * @return {Tech~SourceObject}
+   *        src Object with known type
+   */
+  function fixSource(src) {
+    if (!src.type) {
+      const mimetype = getMimetype(src.src);
+      if (mimetype) {
+        src.type = mimetype;
+      }
+    }
+    return src;
+  }
+
+  var icons = "<svg xmlns=\"http://www.w3.org/2000/svg\">\n  <defs>\n    <symbol viewBox=\"0 0 48 48\" id=\"vjs-icon-play\">\n      <path d=\"M16 10v28l22-14z\"></path>\n    </symbol>\n    <symbol viewBox=\"0 0 48 48\" id=\"vjs-icon-pause\">\n      <path d=\"M12 38h8V10h-8v28zm16-28v28h8V10h-8z\"></path>\n    </symbol>\n    <symbol viewBox=\"0 0 48 48\" id=\"vjs-icon-audio\">\n      <path d=\"M24 2C14.06 2 6 10.06 6 20v14c0 3.31 2.69 6 6 6h6V24h-8v-4c0-7.73 6.27-14 14-14s14 6.27 14 14v4h-8v16h6c3.31 0 6-2.69 6-6V20c0-9.94-8.06-18-18-18z\"></path>\n    </symbol>\n    <symbol viewBox=\"0 0 48 48\" id=\"vjs-icon-captions\">\n      <path d=\"M38 8H10c-2.21 0-4 1.79-4 4v24c0 2.21 1.79 4 4 4h28c2.21 0 4-1.79 4-4V12c0-2.21-1.79-4-4-4zM22 22h-3v-1h-4v6h4v-1h3v2a2 2 0 0 1-2 2h-6a2 2 0 0 1-2-2v-8a2 2 0 0 1 2-2h6a2 2 0 0 1 2 2v2zm14 0h-3v-1h-4v6h4v-1h3v2a2 2 0 0 1-2 2h-6a2 2 0 0 1-2-2v-8a2 2 0 0 1 2-2h6a2 2 0 0 1 2 2v2z\"></path>\n    </symbol>\n    <symbol viewBox=\"0 0 48 48\" id=\"vjs-icon-subtitles\">\n      <path d=\"M40 8H8c-2.21 0-4 1.79-4 4v24c0 2.21 1.79 4 4 4h32c2.21 0 4-1.79 4-4V12c0-2.21-1.79-4-4-4zM8 24h8v4H8v-4zm20 12H8v-4h20v4zm12 0h-8v-4h8v4zm0-8H20v-4h20v4z\"></path>\n    </symbol>\n    <symbol viewBox=\"0 0 48 48\" id=\"vjs-icon-fullscreen-enter\">\n      <path d=\"M14 28h-4v10h10v-4h-6v-6zm-4-8h4v-6h6v-4H10v10zm24 14h-6v4h10V28h-4v6zm-6-24v4h6v6h4V10H28z\"></path>\n    </symbol>\n    <symbol viewBox=\"0 0 48 48\" id=\"vjs-icon-fullscreen-exit\">\n      <path d=\"M10 32h6v6h4V28H10v4zm6-16h-6v4h10V10h-4v6zm12 22h4v-6h6v-4H28v10zm4-22v-6h-4v10h10v-4h-6z\"></path>\n    </symbol>\n    <symbol viewBox=\"0 0 48 48\" id=\"vjs-icon-play-circle\">\n      <path d=\"M20 33l12-9-12-9v18zm4-29C12.95 4 4 12.95 4 24s8.95 20 20 20 20-8.95 20-20S35.05 4 24 4zm0 36c-8.82 0-16-7.18-16-16S15.18 8 24 8s16 7.18 16 16-7.18 16-16 16z\"></path>\n    </symbol>\n    <symbol viewBox=\"0 0 48 48\" id=\"vjs-icon-volume-mute\">\n      <path d=\"M33 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28 6.46z\"></path>\n    </symbol>\n    <symbol viewBox=\"0 0 48 48\" id=\"vjs-icon-spinner\">\n      <path d=\"M18.8 21l9.53-16.51C26.94 4.18 25.49 4 24 4c-4.8 0-9.19 1.69-12.64 4.51l7.33 12.69.11-.2zm24.28-3c-1.84-5.85-6.3-10.52-11.99-12.68L23.77 18h19.31zm.52 2H28.62l.58 1 9.53 16.5C41.99 33.94 44 29.21 44 24c0-1.37-.14-2.71-.4-4zm-26.53 4l-7.8-13.5C6.01 14.06 4 18.79 4 24c0 1.37.14 2.71.4 4h14.98l-2.31-4zM4.92 30c1.84 5.85 6.3 10.52 11.99 12.68L24.23 30H4.92zm22.54 0l-7.8 13.51c1.4.31 2.85.49 4.34.49 4.8 0 9.19-1.69 12.64-4.51L29.31 26.8 27.46 30z\"></path>\n    </symbol>\n    <symbol viewBox=\"0 0 24 24\" id=\"vjs-icon-hd\">\n      <path d=\"M19 3H5a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h14c1.1 0 2-.9 2-2V5c0-1.1-.9-2-2-2zm-8 12H9.5v-2h-2v2H6V9h1.5v2.5h2V9H11v6zm2-6h4c.55 0 1 .45 1 1v4c0 .55-.45 1-1 1h-4V9zm1.5 4.5h2v-3h-2v3z\"></path>\n    </symbol>\n    <symbol viewBox=\"0 0 48 48\" id=\"vjs-icon-chapters\">\n      <path d=\"M6 26h4v-4H6v4zm0 8h4v-4H6v4zm0-16h4v-4H6v4zm8 8h28v-4H14v4zm0 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id=\"vjs-icon-file-download\">\n      <path d=\"M10.8 40.55q-1.35 0-2.375-1T7.4 37.15v-7.7h3.4v7.7h26.35v-7.7h3.4v7.7q0 1.4-1 2.4t-2.4 1zM24 32.1L13.9 22.05l2.45-2.45 5.95 5.95V7.15h3.4v18.4l5.95-5.95 2.45 2.45z\"></path>\n    </symbol>\n    <symbol viewBox=\"0 0 48 48\" id=\"vjs-icon-file-download-done\">\n      <path d=\"M9.8 40.5v-3.45h28.4v3.45zm9.2-9.05L7.4 19.85l2.45-2.35L19 26.65l19.2-19.2 2.4 2.4z\"></path>\n    </symbol>\n    <symbol viewBox=\"0 0 48 48\" id=\"vjs-icon-file-download-off\">\n      <path d=\"M4.9 4.75L43.25 43.1 41 45.3l-4.75-4.75q-.05.05-.075.025-.025-.025-.075-.025H10.8q-1.35 0-2.375-1T7.4 37.15v-7.7h3.4v7.7h22.05l-7-7-1.85 1.8L13.9 21.9l1.85-1.85L2.7 7zm26.75 14.7l2.45 2.45-3.75 3.8-2.45-2.5zM25.7 7.15V21.1l-3.4-3.45V7.15z\"></path>\n    </symbol>\n    <symbol viewBox=\"0 0 48 48\" id=\"vjs-icon-share\">\n      <path d=\"M36 32.17c-1.52 0-2.89.59-3.93 1.54L17.82 25.4c.11-.45.18-.92.18-1.4s-.07-.95-.18-1.4l14.1-8.23c1.07 1 2.5 1.62 4.08 1.62 3.31 0 6-2.69 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+
+  /**
+   * @file loader.js
+   */
+
+  /**
+   * The `MediaLoader` is the `Component` that decides which playback technology to load
+   * when a player is initialized.
+   *
+   * @extends Component
+   */
+  class MediaLoader extends Component$1 {
+    /**
+     * Create an instance of this class.
+     *
+     * @param { import('../player').default } player
+     *        The `Player` that this class should attach to.
+     *
+     * @param {Object} [options]
+     *        The key/value store of player options.
+     *
+     * @param {Function} [ready]
+     *        The function that is run when this component is ready.
+     */
+    constructor(player, options, ready) {
+      // MediaLoader has no element
+      const options_ = merge$2({
+        createEl: false
+      }, options);
+      super(player, options_, ready);
+
+      // If there are no sources when the player is initialized,
+      // load the first supported playback technology.
+
+      if (!options.playerOptions.sources || options.playerOptions.sources.length === 0) {
+        for (let i = 0, j = options.playerOptions.techOrder; i < j.length; i++) {
+          const techName = toTitleCase$1(j[i]);
+          let tech = Tech.getTech(techName);
+
+          // Support old behavior of techs being registered as components.
+          // Remove once that deprecated behavior is removed.
+          if (!techName) {
+            tech = Component$1.getComponent(techName);
+          }
+
+          // Check if the browser supports this technology
+          if (tech && tech.isSupported()) {
+            player.loadTech_(techName);
+            break;
+          }
+        }
+      } else {
+        // Loop through playback technologies (e.g. HTML5) and check for support.
+        // Then load the best source.
+        // A few assumptions here:
+        //   All playback technologies respect preload false.
+        player.src(options.playerOptions.sources);
+      }
+    }
+  }
+  Component$1.registerComponent('MediaLoader', MediaLoader);
+
+  /**
+   * @file clickable-component.js
+   */
+
+  /**
+   * Component which is clickable or keyboard actionable, but is not a
+   * native HTML button.
+   *
+   * @extends Component
+   */
+  class ClickableComponent extends Component$1 {
+    /**
+     * Creates an instance of this class.
+     *
+     * @param  { import('./player').default } player
+     *         The `Player` that this class should be attached to.
+     *
+     * @param  {Object} [options]
+     *         The key/value store of component options.
+     *
+     * @param  {function} [options.clickHandler]
+     *         The function to call when the button is clicked / activated
+     *
+     * @param  {string} [options.controlText]
+     *         The text to set on the button
+     *
+     * @param  {string} [options.className]
+     *         A class or space separated list of classes to add the component
+     *
+     */
+    constructor(player, options) {
+      super(player, options);
+      if (this.options_.controlText) {
+        this.controlText(this.options_.controlText);
+      }
+      this.handleMouseOver_ = e => this.handleMouseOver(e);
+      this.handleMouseOut_ = e => this.handleMouseOut(e);
+      this.handleClick_ = e => this.handleClick(e);
+      this.handleKeyDown_ = e => this.handleKeyDown(e);
+      this.emitTapEvents();
+      this.enable();
+    }
+
+    /**
+     * Create the `ClickableComponent`s DOM element.
+     *
+     * @param {string} [tag=div]
+     *        The element's node type.
+     *
+     * @param {Object} [props={}]
+     *        An object of properties that should be set on the element.
+     *
+     * @param {Object} [attributes={}]
+     *        An object of attributes that should be set on the element.
+     *
+     * @return {Element}
+     *         The element that gets created.
+     */
+    createEl(tag = 'div', props = {}, attributes = {}) {
+      props = Object.assign({
+        className: this.buildCSSClass(),
+        tabIndex: 0
+      }, props);
+      if (tag === 'button') {
+        log$1.error(`Creating a ClickableComponent with an HTML element of ${tag} is not supported; use a Button instead.`);
+      }
+
+      // Add ARIA attributes for clickable element which is not a native HTML button
+      attributes = Object.assign({
+        role: 'button'
+      }, attributes);
+      this.tabIndex_ = props.tabIndex;
+      const el = createEl(tag, props, attributes);
+      if (!this.player_.options_.experimentalSvgIcons) {
+        el.appendChild(createEl('span', {
+          className: 'vjs-icon-placeholder'
+        }, {
+          'aria-hidden': true
+        }));
+      }
+      this.createControlTextEl(el);
+      return el;
+    }
+    dispose() {
+      // remove controlTextEl_ on dispose
+      this.controlTextEl_ = null;
+      super.dispose();
+    }
+
+    /**
+     * Create a control text element on this `ClickableComponent`
+     *
+     * @param {Element} [el]
+     *        Parent element for the control text.
+     *
+     * @return {Element}
+     *         The control text element that gets created.
+     */
+    createControlTextEl(el) {
+      this.controlTextEl_ = createEl('span', {
+        className: 'vjs-control-text'
+      }, {
+        // let the screen reader user know that the text of the element may change
+        'aria-live': 'polite'
+      });
+      if (el) {
+        el.appendChild(this.controlTextEl_);
+      }
+      this.controlText(this.controlText_, el);
+      return this.controlTextEl_;
+    }
+
+    /**
+     * Get or set the localize text to use for the controls on the `ClickableComponent`.
+     *
+     * @param {string} [text]
+     *        Control text for element.
+     *
+     * @param {Element} [el=this.el()]
+     *        Element to set the title on.
+     *
+     * @return {string}
+     *         - The control text when getting
+     */
+    controlText(text, el = this.el()) {
+      if (text === undefined) {
+        return this.controlText_ || 'Need Text';
+      }
+      const localizedText = this.localize(text);
+
+      /** @protected */
+      this.controlText_ = text;
+      textContent(this.controlTextEl_, localizedText);
+      if (!this.nonIconControl && !this.player_.options_.noUITitleAttributes) {
+        // Set title attribute if only an icon is shown
+        el.setAttribute('title', localizedText);
+      }
+    }
+
+    /**
+     * Builds the default DOM `className`.
+     *
+     * @return {string}
+     *         The DOM `className` for this object.
+     */
+    buildCSSClass() {
+      return `vjs-control vjs-button ${super.buildCSSClass()}`;
+    }
+
+    /**
+     * Enable this `ClickableComponent`
+     */
+    enable() {
+      if (!this.enabled_) {
+        this.enabled_ = true;
+        this.removeClass('vjs-disabled');
+        this.el_.setAttribute('aria-disabled', 'false');
+        if (typeof this.tabIndex_ !== 'undefined') {
+          this.el_.setAttribute('tabIndex', this.tabIndex_);
+        }
+        this.on(['tap', 'click'], this.handleClick_);
+        this.on('keydown', this.handleKeyDown_);
+      }
+    }
+
+    /**
+     * Disable this `ClickableComponent`
+     */
+    disable() {
+      this.enabled_ = false;
+      this.addClass('vjs-disabled');
+      this.el_.setAttribute('aria-disabled', 'true');
+      if (typeof this.tabIndex_ !== 'undefined') {
+        this.el_.removeAttribute('tabIndex');
+      }
+      this.off('mouseover', this.handleMouseOver_);
+      this.off('mouseout', this.handleMouseOut_);
+      this.off(['tap', 'click'], this.handleClick_);
+      this.off('keydown', this.handleKeyDown_);
+    }
+
+    /**
+     * Handles language change in ClickableComponent for the player in components
+     *
+     *
+     */
+    handleLanguagechange() {
+      this.controlText(this.controlText_);
+    }
+
+    /**
+     * Event handler that is called when a `ClickableComponent` receives a
+     * `click` or `tap` event.
+     *
+     * @param {Event} event
+     *        The `tap` or `click` event that caused this function to be called.
+     *
+     * @listens tap
+     * @listens click
+     * @abstract
+     */
+    handleClick(event) {
+      if (this.options_.clickHandler) {
+        this.options_.clickHandler.call(this, arguments);
+      }
+    }
+
+    /**
+     * Event handler that is called when a `ClickableComponent` receives a
+     * `keydown` event.
+     *
+     * By default, if the key is Space or Enter, it will trigger a `click` event.
+     *
+     * @param {KeyboardEvent} event
+     *        The `keydown` event that caused this function to be called.
+     *
+     * @listens keydown
+     */
+    handleKeyDown(event) {
+      // Support Space or Enter key operation to fire a click event. Also,
+      // prevent the event from propagating through the DOM and triggering
+      // Player hotkeys.
+      if (keycode.isEventKey(event, 'Space') || keycode.isEventKey(event, 'Enter')) {
+        event.preventDefault();
+        event.stopPropagation();
+        this.trigger('click');
+      } else {
+        // Pass keypress handling up for unsupported keys
+        super.handleKeyDown(event);
+      }
+    }
+  }
+  Component$1.registerComponent('ClickableComponent', ClickableComponent);
+
+  /**
+   * @file poster-image.js
+   */
+
+  /**
+   * A `ClickableComponent` that handles showing the poster image for the player.
+   *
+   * @extends ClickableComponent
+   */
+  class PosterImage extends ClickableComponent {
+    /**
+     * Create an instance of this class.
+     *
+     * @param { import('./player').default } player
+     *        The `Player` that this class should attach to.
+     *
+     * @param {Object} [options]
+     *        The key/value store of player options.
+     */
+    constructor(player, options) {
+      super(player, options);
+      this.update();
+      this.update_ = e => this.update(e);
+      player.on('posterchange', this.update_);
+    }
+
+    /**
+     * Clean up and dispose of the `PosterImage`.
+     */
+    dispose() {
+      this.player().off('posterchange', this.update_);
+      super.dispose();
+    }
+
+    /**
+     * Create the `PosterImage`s DOM element.
+     *
+     * @return {Element}
+     *         The element that gets created.
+     */
+    createEl() {
+      // The el is an empty div to keep position in the DOM
+      // A picture and img el will be inserted when a source is set
+      return createEl('div', {
+        className: 'vjs-poster'
+      });
+    }
+
+    /**
+     * Get or set the `PosterImage`'s crossOrigin option.
+     *
+     * @param {string|null} [value]
+     *        The value to set the crossOrigin to. If an argument is
+     *        given, must be one of `'anonymous'` or `'use-credentials'`, or 'null'.
+     *
+     * @return {string|null}
+     *         - The current crossOrigin value of the `Player` when getting.
+     *         - undefined when setting
+     */
+    crossOrigin(value) {
+      // `null` can be set to unset a value
+      if (typeof value === 'undefined') {
+        if (this.$('img')) {
+          // If the poster's element exists, give its value
+          return this.$('img').crossOrigin;
+        } else if (this.player_.tech_ && this.player_.tech_.isReady_) {
+          // If not but the tech is ready, query the tech
+          return this.player_.crossOrigin();
+        }
+        // Otherwise check options as the  poster is usually set before the state of crossorigin
+        // can be retrieved by the getter
+        return this.player_.options_.crossOrigin || this.player_.options_.crossorigin || null;
+      }
+      if (value !== null && value !== 'anonymous' && value !== 'use-credentials') {
+        this.player_.log.warn(`crossOrigin must be null,  "anonymous" or "use-credentials", given "${value}"`);
+        return;
+      }
+      if (this.$('img')) {
+        this.$('img').crossOrigin = value;
+      }
+      return;
+    }
+
+    /**
+     * An {@link EventTarget~EventListener} for {@link Player#posterchange} events.
+     *
+     * @listens Player#posterchange
+     *
+     * @param {Event} [event]
+     *        The `Player#posterchange` event that triggered this function.
+     */
+    update(event) {
+      const url = this.player().poster();
+      this.setSrc(url);
+
+      // If there's no poster source we should display:none on this component
+      // so it's not still clickable or right-clickable
+      if (url) {
+        this.show();
+      } else {
+        this.hide();
+      }
+    }
+
+    /**
+     * Set the source of the `PosterImage` depending on the display method. (Re)creates
+     * the inner picture and img elementss when needed.
+     *
+     * @param {string} [url]
+     *        The URL to the source for the `PosterImage`. If not specified or falsy,
+     *        any source and ant inner picture/img are removed.
+     */
+    setSrc(url) {
+      if (!url) {
+        this.el_.textContent = '';
+        return;
+      }
+      if (!this.$('img')) {
+        this.el_.appendChild(createEl('picture', {
+          className: 'vjs-poster',
+          // Don't want poster to be tabbable.
+          tabIndex: -1
+        }, {}, createEl('img', {
+          loading: 'lazy',
+          crossOrigin: this.crossOrigin()
+        }, {
+          alt: ''
+        })));
+      }
+      this.$('img').src = url;
+    }
+
+    /**
+     * An {@link EventTarget~EventListener} for clicks on the `PosterImage`. See
+     * {@link ClickableComponent#handleClick} for instances where this will be triggered.
+     *
+     * @listens tap
+     * @listens click
+     * @listens keydown
+     *
+     * @param {Event} event
+     +        The `click`, `tap` or `keydown` event that caused this function to be called.
+     */
+    handleClick(event) {
+      // We don't want a click to trigger playback when controls are disabled
+      if (!this.player_.controls()) {
+        return;
+      }
+      if (this.player_.tech(true)) {
+        this.player_.tech(true).focus();
+      }
+      if (this.player_.paused()) {
+        silencePromise(this.player_.play());
+      } else {
+        this.player_.pause();
+      }
+    }
+  }
+
+  /**
+   * Get or set the `PosterImage`'s crossorigin option. For the HTML5 player, this
+   * sets the `crossOrigin` property on the `<img>` tag to control the CORS
+   * behavior.
+   *
+   * @param {string|null} [value]
+   *        The value to set the `PosterImages`'s crossorigin to. If an argument is
+   *        given, must be one of `anonymous` or `use-credentials`.
+   *
+   * @return {string|null|undefined}
+   *         - The current crossorigin value of the `Player` when getting.
+   *         - undefined when setting
+   */
+  PosterImage.prototype.crossorigin = PosterImage.prototype.crossOrigin;
+  Component$1.registerComponent('PosterImage', PosterImage);
+
+  /**
+   * @file text-track-display.js
+   */
+  const darkGray = '#222';
+  const lightGray = '#ccc';
+  const fontMap = {
+    monospace: 'monospace',
+    sansSerif: 'sans-serif',
+    serif: 'serif',
+    monospaceSansSerif: '"Andale Mono", "Lucida Console", monospace',
+    monospaceSerif: '"Courier New", monospace',
+    proportionalSansSerif: 'sans-serif',
+    proportionalSerif: 'serif',
+    casual: '"Comic Sans MS", Impact, fantasy',
+    script: '"Monotype Corsiva", cursive',
+    smallcaps: '"Andale Mono", "Lucida Console", monospace, sans-serif'
+  };
+
+  /**
+   * Construct an rgba color from a given hex color code.
+   *
+   * @param {number} color
+   *        Hex number for color, like #f0e or #f604e2.
+   *
+   * @param {number} opacity
+   *        Value for opacity, 0.0 - 1.0.
+   *
+   * @return {string}
+   *         The rgba color that was created, like 'rgba(255, 0, 0, 0.3)'.
+   */
+  function constructColor(color, opacity) {
+    let hex;
+    if (color.length === 4) {
+      // color looks like "#f0e"
+      hex = color[1] + color[1] + color[2] + color[2] + color[3] + color[3];
+    } else if (color.length === 7) {
+      // color looks like "#f604e2"
+      hex = color.slice(1);
+    } else {
+      throw new Error('Invalid color code provided, ' + color + '; must be formatted as e.g. #f0e or #f604e2.');
+    }
+    return 'rgba(' + parseInt(hex.slice(0, 2), 16) + ',' + parseInt(hex.slice(2, 4), 16) + ',' + parseInt(hex.slice(4, 6), 16) + ',' + opacity + ')';
+  }
+
+  /**
+   * Try to update the style of a DOM element. Some style changes will throw an error,
+   * particularly in IE8. Those should be noops.
+   *
+   * @param {Element} el
+   *        The DOM element to be styled.
+   *
+   * @param {string} style
+   *        The CSS property on the element that should be styled.
+   *
+   * @param {string} rule
+   *        The style rule that should be applied to the property.
+   *
+   * @private
+   */
+  function tryUpdateStyle(el, style, rule) {
+    try {
+      el.style[style] = rule;
+    } catch (e) {
+      // Satisfies linter.
+      return;
+    }
+  }
+
+  /**
+   * Converts the CSS top/right/bottom/left property numeric value to string in pixels.
+   *
+   * @param {number} position
+   *        The CSS top/right/bottom/left property value.
+   *
+   * @return {string}
+   *          The CSS property value that was created, like '10px'.
+   *
+   * @private
+   */
+  function getCSSPositionValue(position) {
+    return position ? `${position}px` : '';
+  }
+
+  /**
+   * The component for displaying text track cues.
+   *
+   * @extends Component
+   */
+  class TextTrackDisplay extends Component$1 {
+    /**
+     * Creates an instance of this class.
+     *
+     * @param { import('../player').default } player
+     *        The `Player` that this class should be attached to.
+     *
+     * @param {Object} [options]
+     *        The key/value store of player options.
+     *
+     * @param {Function} [ready]
+     *        The function to call when `TextTrackDisplay` is ready.
+     */
+    constructor(player, options, ready) {
+      super(player, options, ready);
+      const updateDisplayTextHandler = e => this.updateDisplay(e);
+      const updateDisplayHandler = e => {
+        this.updateDisplayOverlay();
+        this.updateDisplay(e);
+      };
+      player.on('loadstart', e => this.toggleDisplay(e));
+      player.on('texttrackchange', updateDisplayTextHandler);
+      player.on('loadedmetadata', e => {
+        this.updateDisplayOverlay();
+        this.preselectTrack(e);
+      });
+
+      // This used to be called during player init, but was causing an error
+      // if a track should show by default and the display hadn't loaded yet.
+      // Should probably be moved to an external track loader when we support
+      // tracks that don't need a display.
+      player.ready(bind_(this, function () {
+        if (player.tech_ && player.tech_.featuresNativeTextTracks) {
+          this.hide();
+          return;
+        }
+        player.on('fullscreenchange', updateDisplayHandler);
+        player.on('playerresize', updateDisplayHandler);
+        const screenOrientation = window.screen.orientation || window;
+        const changeOrientationEvent = window.screen.orientation ? 'change' : 'orientationchange';
+        screenOrientation.addEventListener(changeOrientationEvent, updateDisplayHandler);
+        player.on('dispose', () => screenOrientation.removeEventListener(changeOrientationEvent, updateDisplayHandler));
+        const tracks = this.options_.playerOptions.tracks || [];
+        for (let i = 0; i < tracks.length; i++) {
+          this.player_.addRemoteTextTrack(tracks[i], true);
+        }
+        this.preselectTrack();
+      }));
+    }
+
+    /**
+    * Preselect a track following this precedence:
+    * - matches the previously selected {@link TextTrack}'s language and kind
+    * - matches the previously selected {@link TextTrack}'s language only
+    * - is the first default captions track
+    * - is the first default descriptions track
+    *
+    * @listens Player#loadstart
+    */
+    preselectTrack() {
+      const modes = {
+        captions: 1,
+        subtitles: 1
+      };
+      const trackList = this.player_.textTracks();
+      const userPref = this.player_.cache_.selectedLanguage;
+      let firstDesc;
+      let firstCaptions;
+      let preferredTrack;
+      for (let i = 0; i < trackList.length; i++) {
+        const track = trackList[i];
+        if (userPref && userPref.enabled && userPref.language && userPref.language === track.language && track.kind in modes) {
+          // Always choose the track that matches both language and kind
+          if (track.kind === userPref.kind) {
+            preferredTrack = track;
+            // or choose the first track that matches language
+          } else if (!preferredTrack) {
+            preferredTrack = track;
+          }
+
+          // clear everything if offTextTrackMenuItem was clicked
+        } else if (userPref && !userPref.enabled) {
+          preferredTrack = null;
+          firstDesc = null;
+          firstCaptions = null;
+        } else if (track.default) {
+          if (track.kind === 'descriptions' && !firstDesc) {
+            firstDesc = track;
+          } else if (track.kind in modes && !firstCaptions) {
+            firstCaptions = track;
+          }
+        }
+      }
+
+      // The preferredTrack matches the user preference and takes
+      // precedence over all the other tracks.
+      // So, display the preferredTrack before the first default track
+      // and the subtitles/captions track before the descriptions track
+      if (preferredTrack) {
+        preferredTrack.mode = 'showing';
+      } else if (firstCaptions) {
+        firstCaptions.mode = 'showing';
+      } else if (firstDesc) {
+        firstDesc.mode = 'showing';
+      }
+    }
+
+    /**
+     * Turn display of {@link TextTrack}'s from the current state into the other state.
+     * There are only two states:
+     * - 'shown'
+     * - 'hidden'
+     *
+     * @listens Player#loadstart
+     */
+    toggleDisplay() {
+      if (this.player_.tech_ && this.player_.tech_.featuresNativeTextTracks) {
+        this.hide();
+      } else {
+        this.show();
+      }
+    }
+
+    /**
+     * Create the {@link Component}'s DOM element.
+     *
+     * @return {Element}
+     *         The element that was created.
+     */
+    createEl() {
+      return super.createEl('div', {
+        className: 'vjs-text-track-display'
+      }, {
+        'translate': 'yes',
+        'aria-live': 'off',
+        'aria-atomic': 'true'
+      });
+    }
+
+    /**
+     * Clear all displayed {@link TextTrack}s.
+     */
+    clearDisplay() {
+      if (typeof window.WebVTT === 'function') {
+        window.WebVTT.processCues(window, [], this.el_);
+      }
+    }
+
+    /**
+     * Update the displayed TextTrack when a either a {@link Player#texttrackchange} or
+     * a {@link Player#fullscreenchange} is fired.
+     *
+     * @listens Player#texttrackchange
+     * @listens Player#fullscreenchange
+     */
+    updateDisplay() {
+      const tracks = this.player_.textTracks();
+      const allowMultipleShowingTracks = this.options_.allowMultipleShowingTracks;
+      this.clearDisplay();
+      if (allowMultipleShowingTracks) {
+        const showingTracks = [];
+        for (let i = 0; i < tracks.length; ++i) {
+          const track = tracks[i];
+          if (track.mode !== 'showing') {
+            continue;
+          }
+          showingTracks.push(track);
+        }
+        this.updateForTrack(showingTracks);
+        return;
+      }
+
+      //  Track display prioritization model: if multiple tracks are 'showing',
+      //  display the first 'subtitles' or 'captions' track which is 'showing',
+      //  otherwise display the first 'descriptions' track which is 'showing'
+
+      let descriptionsTrack = null;
+      let captionsSubtitlesTrack = null;
+      let i = tracks.length;
+      while (i--) {
+        const track = tracks[i];
+        if (track.mode === 'showing') {
+          if (track.kind === 'descriptions') {
+            descriptionsTrack = track;
+          } else {
+            captionsSubtitlesTrack = track;
+          }
+        }
+      }
+      if (captionsSubtitlesTrack) {
+        if (this.getAttribute('aria-live') !== 'off') {
+          this.setAttribute('aria-live', 'off');
+        }
+        this.updateForTrack(captionsSubtitlesTrack);
+      } else if (descriptionsTrack) {
+        if (this.getAttribute('aria-live') !== 'assertive') {
+          this.setAttribute('aria-live', 'assertive');
+        }
+        this.updateForTrack(descriptionsTrack);
+      }
+    }
+
+    /**
+     * Updates the displayed TextTrack to be sure it overlays the video when a either
+     * a {@link Player#texttrackchange} or a {@link Player#fullscreenchange} is fired.
+     */
+    updateDisplayOverlay() {
+      // inset-inline and inset-block are not supprted on old chrome, but these are
+      // only likely to be used on TV devices
+      if (!this.player_.videoHeight() || !window.CSS.supports('inset-inline: 10px')) {
+        return;
+      }
+      const playerWidth = this.player_.currentWidth();
+      const playerHeight = this.player_.currentHeight();
+      const playerAspectRatio = playerWidth / playerHeight;
+      const videoAspectRatio = this.player_.videoWidth() / this.player_.videoHeight();
+      let insetInlineMatch = 0;
+      let insetBlockMatch = 0;
+      if (Math.abs(playerAspectRatio - videoAspectRatio) > 0.1) {
+        if (playerAspectRatio > videoAspectRatio) {
+          insetInlineMatch = Math.round((playerWidth - playerHeight * videoAspectRatio) / 2);
+        } else {
+          insetBlockMatch = Math.round((playerHeight - playerWidth / videoAspectRatio) / 2);
+        }
+      }
+      tryUpdateStyle(this.el_, 'insetInline', getCSSPositionValue(insetInlineMatch));
+      tryUpdateStyle(this.el_, 'insetBlock', getCSSPositionValue(insetBlockMatch));
+    }
+
+    /**
+     * Style {@Link TextTrack} activeCues according to {@Link TextTrackSettings}.
+     *
+     * @param {TextTrack} track
+     *        Text track object containing active cues to style.
+     */
+    updateDisplayState(track) {
+      const overrides = this.player_.textTrackSettings.getValues();
+      const cues = track.activeCues;
+      let i = cues.length;
+      while (i--) {
+        const cue = cues[i];
+        if (!cue) {
+          continue;
+        }
+        const cueDiv = cue.displayState;
+        if (overrides.color) {
+          cueDiv.firstChild.style.color = overrides.color;
+        }
+        if (overrides.textOpacity) {
+          tryUpdateStyle(cueDiv.firstChild, 'color', constructColor(overrides.color || '#fff', overrides.textOpacity));
+        }
+        if (overrides.backgroundColor) {
+          cueDiv.firstChild.style.backgroundColor = overrides.backgroundColor;
+        }
+        if (overrides.backgroundOpacity) {
+          tryUpdateStyle(cueDiv.firstChild, 'backgroundColor', constructColor(overrides.backgroundColor || '#000', overrides.backgroundOpacity));
+        }
+        if (overrides.windowColor) {
+          if (overrides.windowOpacity) {
+            tryUpdateStyle(cueDiv, 'backgroundColor', constructColor(overrides.windowColor, overrides.windowOpacity));
+          } else {
+            cueDiv.style.backgroundColor = overrides.windowColor;
+          }
+        }
+        if (overrides.edgeStyle) {
+          if (overrides.edgeStyle === 'dropshadow') {
+            cueDiv.firstChild.style.textShadow = `2px 2px 3px ${darkGray}, 2px 2px 4px ${darkGray}, 2px 2px 5px ${darkGray}`;
+          } else if (overrides.edgeStyle === 'raised') {
+            cueDiv.firstChild.style.textShadow = `1px 1px ${darkGray}, 2px 2px ${darkGray}, 3px 3px ${darkGray}`;
+          } else if (overrides.edgeStyle === 'depressed') {
+            cueDiv.firstChild.style.textShadow = `1px 1px ${lightGray}, 0 1px ${lightGray}, -1px -1px ${darkGray}, 0 -1px ${darkGray}`;
+          } else if (overrides.edgeStyle === 'uniform') {
+            cueDiv.firstChild.style.textShadow = `0 0 4px ${darkGray}, 0 0 4px ${darkGray}, 0 0 4px ${darkGray}, 0 0 4px ${darkGray}`;
+          }
+        }
+        if (overrides.fontPercent && overrides.fontPercent !== 1) {
+          const fontSize = window.parseFloat(cueDiv.style.fontSize);
+          cueDiv.style.fontSize = fontSize * overrides.fontPercent + 'px';
+          cueDiv.style.height = 'auto';
+          cueDiv.style.top = 'auto';
+        }
+        if (overrides.fontFamily && overrides.fontFamily !== 'default') {
+          if (overrides.fontFamily === 'small-caps') {
+            cueDiv.firstChild.style.fontVariant = 'small-caps';
+          } else {
+            cueDiv.firstChild.style.fontFamily = fontMap[overrides.fontFamily];
+          }
+        }
+      }
+    }
+
+    /**
+     * Add an {@link TextTrack} to to the {@link Tech}s {@link TextTrackList}.
+     *
+     * @param {TextTrack|TextTrack[]} tracks
+     *        Text track object or text track array to be added to the list.
+     */
+    updateForTrack(tracks) {
+      if (!Array.isArray(tracks)) {
+        tracks = [tracks];
+      }
+      if (typeof window.WebVTT !== 'function' || tracks.every(track => {
+        return !track.activeCues;
+      })) {
+        return;
+      }
+      const cues = [];
+
+      // push all active track cues
+      for (let i = 0; i < tracks.length; ++i) {
+        const track = tracks[i];
+        for (let j = 0; j < track.activeCues.length; ++j) {
+          cues.push(track.activeCues[j]);
+        }
+      }
+
+      // removes all cues before it processes new ones
+      window.WebVTT.processCues(window, cues, this.el_);
+
+      // add unique class to each language text track & add settings styling if necessary
+      for (let i = 0; i < tracks.length; ++i) {
+        const track = tracks[i];
+        for (let j = 0; j < track.activeCues.length; ++j) {
+          const cueEl = track.activeCues[j].displayState;
+          addClass(cueEl, 'vjs-text-track-cue', 'vjs-text-track-cue-' + (track.language ? track.language : i));
+          if (track.language) {
+            setAttribute(cueEl, 'lang', track.language);
+          }
+        }
+        if (this.player_.textTrackSettings) {
+          this.updateDisplayState(track);
+        }
+      }
+    }
+  }
+  Component$1.registerComponent('TextTrackDisplay', TextTrackDisplay);
+
+  /**
+   * @file loading-spinner.js
+   */
+
+  /**
+   * A loading spinner for use during waiting/loading events.
+   *
+   * @extends Component
+   */
+  class LoadingSpinner extends Component$1 {
+    /**
+     * Create the `LoadingSpinner`s DOM element.
+     *
+     * @return {Element}
+     *         The dom element that gets created.
+     */
+    createEl() {
+      const isAudio = this.player_.isAudio();
+      const playerType = this.localize(isAudio ? 'Audio Player' : 'Video Player');
+      const controlText = createEl('span', {
+        className: 'vjs-control-text',
+        textContent: this.localize('{1} is loading.', [playerType])
+      });
+      const el = super.createEl('div', {
+        className: 'vjs-loading-spinner',
+        dir: 'ltr'
+      });
+      el.appendChild(controlText);
+      return el;
+    }
+
+    /**
+     * Update control text on languagechange
+     */
+    handleLanguagechange() {
+      this.$('.vjs-control-text').textContent = this.localize('{1} is loading.', [this.player_.isAudio() ? 'Audio Player' : 'Video Player']);
+    }
+  }
+  Component$1.registerComponent('LoadingSpinner', LoadingSpinner);
+
+  /**
+   * @file button.js
+   */
+
+  /**
+   * Base class for all buttons.
+   *
+   * @extends ClickableComponent
+   */
+  class Button extends ClickableComponent {
+    /**
+     * Create the `Button`s DOM element.
+     *
+     * @param {string} [tag="button"]
+     *        The element's node type. This argument is IGNORED: no matter what
+     *        is passed, it will always create a `button` element.
+     *
+     * @param {Object} [props={}]
+     *        An object of properties that should be set on the element.
+     *
+     * @param {Object} [attributes={}]
+     *        An object of attributes that should be set on the element.
+     *
+     * @return {Element}
+     *         The element that gets created.
+     */
+    createEl(tag, props = {}, attributes = {}) {
+      tag = 'button';
+      props = Object.assign({
+        className: this.buildCSSClass()
+      }, props);
+
+      // Add attributes for button element
+      attributes = Object.assign({
+        // Necessary since the default button type is "submit"
+        type: 'button'
+      }, attributes);
+      const el = createEl(tag, props, attributes);
+      if (!this.player_.options_.experimentalSvgIcons) {
+        el.appendChild(createEl('span', {
+          className: 'vjs-icon-placeholder'
+        }, {
+          'aria-hidden': true
+        }));
+      }
+      this.createControlTextEl(el);
+      return el;
+    }
+
+    /**
+     * Add a child `Component` inside of this `Button`.
+     *
+     * @param {string|Component} child
+     *        The name or instance of a child to add.
+     *
+     * @param {Object} [options={}]
+     *        The key/value store of options that will get passed to children of
+     *        the child.
+     *
+     * @return {Component}
+     *         The `Component` that gets added as a child. When using a string the
+     *         `Component` will get created by this process.
+     *
+     * @deprecated since version 5
+     */
+    addChild(child, options = {}) {
+      const className = this.constructor.name;
+      log$1.warn(`Adding an actionable (user controllable) child to a Button (${className}) is not supported; use a ClickableComponent instead.`);
+
+      // Avoid the error message generated by ClickableComponent's addChild method
+      return Component$1.prototype.addChild.call(this, child, options);
+    }
+
+    /**
+     * Enable the `Button` element so that it can be activated or clicked. Use this with
+     * {@link Button#disable}.
+     */
+    enable() {
+      super.enable();
+      this.el_.removeAttribute('disabled');
+    }
+
+    /**
+     * Disable the `Button` element so that it cannot be activated or clicked. Use this with
+     * {@link Button#enable}.
+     */
+    disable() {
+      super.disable();
+      this.el_.setAttribute('disabled', 'disabled');
+    }
+
+    /**
+     * This gets called when a `Button` has focus and `keydown` is triggered via a key
+     * press.
+     *
+     * @param {KeyboardEvent} event
+     *        The event that caused this function to get called.
+     *
+     * @listens keydown
+     */
+    handleKeyDown(event) {
+      // Ignore Space or Enter key operation, which is handled by the browser for
+      // a button - though not for its super class, ClickableComponent. Also,
+      // prevent the event from propagating through the DOM and triggering Player
+      // hotkeys. We do not preventDefault here because we _want_ the browser to
+      // handle it.
+      if (keycode.isEventKey(event, 'Space') || keycode.isEventKey(event, 'Enter')) {
+        event.stopPropagation();
+        return;
+      }
+
+      // Pass keypress handling up for unsupported keys
+      super.handleKeyDown(event);
+    }
+  }
+  Component$1.registerComponent('Button', Button);
+
+  /**
+   * @file big-play-button.js
+   */
+
+  /**
+   * The initial play button that shows before the video has played. The hiding of the
+   * `BigPlayButton` get done via CSS and `Player` states.
+   *
+   * @extends Button
+   */
+  class BigPlayButton extends Button {
+    constructor(player, options) {
+      super(player, options);
+      this.mouseused_ = false;
+      this.setIcon('play');
+      this.on('mousedown', e => this.handleMouseDown(e));
+    }
+
+    /**
+     * Builds the default DOM `className`.
+     *
+     * @return {string}
+     *         The DOM `className` for this object. Always returns 'vjs-big-play-button'.
+     */
+    buildCSSClass() {
+      return 'vjs-big-play-button';
+    }
+
+    /**
+     * This gets called when a `BigPlayButton` "clicked". See {@link ClickableComponent}
+     * for more detailed information on what a click can be.
+     *
+     * @param {KeyboardEvent|MouseEvent|TouchEvent} event
+     *        The `keydown`, `tap`, or `click` event that caused this function to be
+     *        called.
+     *
+     * @listens tap
+     * @listens click
+     */
+    handleClick(event) {
+      const playPromise = this.player_.play();
+
+      // exit early if clicked via the mouse
+      if (this.mouseused_ && 'clientX' in event && 'clientY' in event) {
+        silencePromise(playPromise);
+        if (this.player_.tech(true)) {
+          this.player_.tech(true).focus();
+        }
+        return;
+      }
+      const cb = this.player_.getChild('controlBar');
+      const playToggle = cb && cb.getChild('playToggle');
+      if (!playToggle) {
+        this.player_.tech(true).focus();
+        return;
+      }
+      const playFocus = () => playToggle.focus();
+      if (isPromise(playPromise)) {
+        playPromise.then(playFocus, () => {});
+      } else {
+        this.setTimeout(playFocus, 1);
+      }
+    }
+
+    /**
+     * Event handler that is called when a `BigPlayButton` receives a
+     * `keydown` event.
+     *
+     * @param {KeyboardEvent} event
+     *        The `keydown` event that caused this function to be called.
+     *
+     * @listens keydown
+     */
+    handleKeyDown(event) {
+      this.mouseused_ = false;
+      super.handleKeyDown(event);
+    }
+
+    /**
+     * Handle `mousedown` events on the `BigPlayButton`.
+     *
+     * @param {MouseEvent} event
+     *        `mousedown` or `touchstart` event that triggered this function
+     *
+     * @listens mousedown
+     */
+    handleMouseDown(event) {
+      this.mouseused_ = true;
+    }
+  }
+
+  /**
+   * The text that should display over the `BigPlayButton`s controls. Added to for localization.
+   *
+   * @type {string}
+   * @protected
+   */
+  BigPlayButton.prototype.controlText_ = 'Play Video';
+  Component$1.registerComponent('BigPlayButton', BigPlayButton);
+
+  /**
+   * @file close-button.js
+   */
+
+  /**
+   * The `CloseButton` is a `{@link Button}` that fires a `close` event when
+   * it gets clicked.
+   *
+   * @extends Button
+   */
+  class CloseButton extends Button {
+    /**
+    * Creates an instance of the this class.
+    *
+    * @param  { import('./player').default } player
+    *         The `Player` that this class should be attached to.
+    *
+    * @param  {Object} [options]
+    *         The key/value store of player options.
+    */
+    constructor(player, options) {
+      super(player, options);
+      this.setIcon('cancel');
+      this.controlText(options && options.controlText || this.localize('Close'));
+    }
+
+    /**
+    * Builds the default DOM `className`.
+    *
+    * @return {string}
+    *         The DOM `className` for this object.
+    */
+    buildCSSClass() {
+      return `vjs-close-button ${super.buildCSSClass()}`;
+    }
+
+    /**
+     * This gets called when a `CloseButton` gets clicked. See
+     * {@link ClickableComponent#handleClick} for more information on when
+     * this will be triggered
+     *
+     * @param {Event} event
+     *        The `keydown`, `tap`, or `click` event that caused this function to be
+     *        called.
+     *
+     * @listens tap
+     * @listens click
+     * @fires CloseButton#close
+     */
+    handleClick(event) {
+      /**
+       * Triggered when the a `CloseButton` is clicked.
+       *
+       * @event CloseButton#close
+       * @type {Event}
+       *
+       * @property {boolean} [bubbles=false]
+       *           set to false so that the close event does not
+       *           bubble up to parents if there is no listener
+       */
+      this.trigger({
+        type: 'close',
+        bubbles: false
+      });
+    }
+    /**
+     * Event handler that is called when a `CloseButton` receives a
+     * `keydown` event.
+     *
+     * By default, if the key is Esc, it will trigger a `click` event.
+     *
+     * @param {KeyboardEvent} event
+     *        The `keydown` event that caused this function to be called.
+     *
+     * @listens keydown
+     */
+    handleKeyDown(event) {
+      // Esc button will trigger `click` event
+      if (keycode.isEventKey(event, 'Esc')) {
+        event.preventDefault();
+        event.stopPropagation();
+        this.trigger('click');
+      } else {
+        // Pass keypress handling up for unsupported keys
+        super.handleKeyDown(event);
+      }
+    }
+  }
+  Component$1.registerComponent('CloseButton', CloseButton);
+
+  /**
+   * @file play-toggle.js
+   */
+
+  /**
+   * Button to toggle between play and pause.
+   *
+   * @extends Button
+   */
+  class PlayToggle extends Button {
+    /**
+     * Creates an instance of this class.
+     *
+     * @param { import('./player').default } player
+     *        The `Player` that this class should be attached to.
+     *
+     * @param {Object} [options={}]
+     *        The key/value store of player options.
+     */
+    constructor(player, options = {}) {
+      super(player, options);
+
+      // show or hide replay icon
+      options.replay = options.replay === undefined || options.replay;
+      this.setIcon('play');
+      this.on(player, 'play', e => this.handlePlay(e));
+      this.on(player, 'pause', e => this.handlePause(e));
+      if (options.replay) {
+        this.on(player, 'ended', e => this.handleEnded(e));
+      }
+    }
+
+    /**
+     * Builds the default DOM `className`.
+     *
+     * @return {string}
+     *         The DOM `className` for this object.
+     */
+    buildCSSClass() {
+      return `vjs-play-control ${super.buildCSSClass()}`;
+    }
+
+    /**
+     * This gets called when an `PlayToggle` is "clicked". See
+     * {@link ClickableComponent} for more detailed information on what a click can be.
+     *
+     * @param {Event} [event]
+     *        The `keydown`, `tap`, or `click` event that caused this function to be
+     *        called.
+     *
+     * @listens tap
+     * @listens click
+     */
+    handleClick(event) {
+      if (this.player_.paused()) {
+        silencePromise(this.player_.play());
+      } else {
+        this.player_.pause();
+      }
+    }
+
+    /**
+     * This gets called once after the video has ended and the user seeks so that
+     * we can change the replay button back to a play button.
+     *
+     * @param {Event} [event]
+     *        The event that caused this function to run.
+     *
+     * @listens Player#seeked
+     */
+    handleSeeked(event) {
+      this.removeClass('vjs-ended');
+      if (this.player_.paused()) {
+        this.handlePause(event);
+      } else {
+        this.handlePlay(event);
+      }
+    }
+
+    /**
+     * Add the vjs-playing class to the element so it can change appearance.
+     *
+     * @param {Event} [event]
+     *        The event that caused this function to run.
+     *
+     * @listens Player#play
+     */
+    handlePlay(event) {
+      this.removeClass('vjs-ended', 'vjs-paused');
+      this.addClass('vjs-playing');
+      // change the button text to "Pause"
+      this.setIcon('pause');
+      this.controlText('Pause');
+    }
+
+    /**
+     * Add the vjs-paused class to the element so it can change appearance.
+     *
+     * @param {Event} [event]
+     *        The event that caused this function to run.
+     *
+     * @listens Player#pause
+     */
+    handlePause(event) {
+      this.removeClass('vjs-playing');
+      this.addClass('vjs-paused');
+      // change the button text to "Play"
+      this.setIcon('play');
+      this.controlText('Play');
+    }
+
+    /**
+     * Add the vjs-ended class to the element so it can change appearance
+     *
+     * @param {Event} [event]
+     *        The event that caused this function to run.
+     *
+     * @listens Player#ended
+     */
+    handleEnded(event) {
+      this.removeClass('vjs-playing');
+      this.addClass('vjs-ended');
+      // change the button text to "Replay"
+      this.setIcon('replay');
+      this.controlText('Replay');
+
+      // on the next seek remove the replay button
+      this.one(this.player_, 'seeked', e => this.handleSeeked(e));
+    }
+  }
+
+  /**
+   * The text that should display over the `PlayToggle`s controls. Added for localization.
+   *
+   * @type {string}
+   * @protected
+   */
+  PlayToggle.prototype.controlText_ = 'Play';
+  Component$1.registerComponent('PlayToggle', PlayToggle);
+
+  /**
+   * @file time-display.js
+   */
+
+  /**
+   * Displays time information about the video
+   *
+   * @extends Component
+   */
+  class TimeDisplay extends Component$1 {
+    /**
+     * Creates an instance of this class.
+     *
+     * @param { import('../../player').default } player
+     *        The `Player` that this class should be attached to.
+     *
+     * @param {Object} [options]
+     *        The key/value store of player options.
+     */
+    constructor(player, options) {
+      super(player, options);
+      this.on(player, ['timeupdate', 'ended', 'seeking'], e => this.update(e));
+      this.updateTextNode_();
+    }
+
+    /**
+     * Create the `Component`'s DOM element
+     *
+     * @return {Element}
+     *         The element that was created.
+     */
+    createEl() {
+      const className = this.buildCSSClass();
+      const el = super.createEl('div', {
+        className: `${className} vjs-time-control vjs-control`
+      });
+      const span = createEl('span', {
+        className: 'vjs-control-text',
+        textContent: `${this.localize(this.labelText_)}\u00a0`
+      }, {
+        role: 'presentation'
+      });
+      el.appendChild(span);
+      this.contentEl_ = createEl('span', {
+        className: `${className}-display`
+      }, {
+        // span elements have no implicit role, but some screen readers (notably VoiceOver)
+        // treat them as a break between items in the DOM when using arrow keys
+        // (or left-to-right swipes on iOS) to read contents of a page. Using
+        // role='presentation' causes VoiceOver to NOT treat this span as a break.
+        role: 'presentation'
+      });
+      el.appendChild(this.contentEl_);
+      return el;
+    }
+    dispose() {
+      this.contentEl_ = null;
+      this.textNode_ = null;
+      super.dispose();
+    }
+
+    /**
+     * Updates the displayed time according to the `updateContent` function which is defined in the child class.
+     *
+     * @param {Event} [event]
+     *          The `timeupdate`, `ended` or `seeking` (if enableSmoothSeeking is true) event that caused this function to be called.
+     */
+    update(event) {
+      if (!this.player_.options_.enableSmoothSeeking && event.type === 'seeking') {
+        return;
+      }
+      this.updateContent(event);
+    }
+
+    /**
+     * Updates the time display text node with a new time
+     *
+     * @param {number} [time=0] the time to update to
+     *
+     * @private
+     */
+    updateTextNode_(time = 0) {
+      time = formatTime(time);
+      if (this.formattedTime_ === time) {
+        return;
+      }
+      this.formattedTime_ = time;
+      this.requestNamedAnimationFrame('TimeDisplay#updateTextNode_', () => {
+        if (!this.contentEl_) {
+          return;
+        }
+        let oldNode = this.textNode_;
+        if (oldNode && this.contentEl_.firstChild !== oldNode) {
+          oldNode = null;
+          log$1.warn('TimeDisplay#updateTextnode_: Prevented replacement of text node element since it was no longer a child of this node. Appending a new node instead.');
+        }
+        this.textNode_ = document.createTextNode(this.formattedTime_);
+        if (!this.textNode_) {
+          return;
+        }
+        if (oldNode) {
+          this.contentEl_.replaceChild(this.textNode_, oldNode);
+        } else {
+          this.contentEl_.appendChild(this.textNode_);
+        }
+      });
+    }
+
+    /**
+     * To be filled out in the child class, should update the displayed time
+     * in accordance with the fact that the current time has changed.
+     *
+     * @param {Event} [event]
+     *        The `timeupdate`  event that caused this to run.
+     *
+     * @listens Player#timeupdate
+     */
+    updateContent(event) {}
+  }
+
+  /**
+   * The text that is added to the `TimeDisplay` for screen reader users.
+   *
+   * @type {string}
+   * @private
+   */
+  TimeDisplay.prototype.labelText_ = 'Time';
+
+  /**
+   * The text that should display over the `TimeDisplay`s controls. Added to for localization.
+   *
+   * @type {string}
+   * @protected
+   *
+   * @deprecated in v7; controlText_ is not used in non-active display Components
+   */
+  TimeDisplay.prototype.controlText_ = 'Time';
+  Component$1.registerComponent('TimeDisplay', TimeDisplay);
+
+  /**
+   * @file current-time-display.js
+   */
+
+  /**
+   * Displays the current time
+   *
+   * @extends Component
+   */
+  class CurrentTimeDisplay extends TimeDisplay {
+    /**
+     * Builds the default DOM `className`.
+     *
+     * @return {string}
+     *         The DOM `className` for this object.
+     */
+    buildCSSClass() {
+      return 'vjs-current-time';
+    }
+
+    /**
+     * Update current time display
+     *
+     * @param {Event} [event]
+     *        The `timeupdate` event that caused this function to run.
+     *
+     * @listens Player#timeupdate
+     */
+    updateContent(event) {
+      // Allows for smooth scrubbing, when player can't keep up.
+      let time;
+      if (this.player_.ended()) {
+        time = this.player_.duration();
+      } else {
+        time = this.player_.scrubbing() ? this.player_.getCache().currentTime : this.player_.currentTime();
+      }
+      this.updateTextNode_(time);
+    }
+  }
+
+  /**
+   * The text that is added to the `CurrentTimeDisplay` for screen reader users.
+   *
+   * @type {string}
+   * @private
+   */
+  CurrentTimeDisplay.prototype.labelText_ = 'Current Time';
+
+  /**
+   * The text that should display over the `CurrentTimeDisplay`s controls. Added to for localization.
+   *
+   * @type {string}
+   * @protected
+   *
+   * @deprecated in v7; controlText_ is not used in non-active display Components
+   */
+  CurrentTimeDisplay.prototype.controlText_ = 'Current Time';
+  Component$1.registerComponent('CurrentTimeDisplay', CurrentTimeDisplay);
+
+  /**
+   * @file duration-display.js
+   */
+
+  /**
+   * Displays the duration
+   *
+   * @extends Component
+   */
+  class DurationDisplay extends TimeDisplay {
+    /**
+     * Creates an instance of this class.
+     *
+     * @param { import('../../player').default } player
+     *        The `Player` that this class should be attached to.
+     *
+     * @param {Object} [options]
+     *        The key/value store of player options.
+     */
+    constructor(player, options) {
+      super(player, options);
+      const updateContent = e => this.updateContent(e);
+
+      // we do not want to/need to throttle duration changes,
+      // as they should always display the changed duration as
+      // it has changed
+      this.on(player, 'durationchange', updateContent);
+
+      // Listen to loadstart because the player duration is reset when a new media element is loaded,
+      // but the durationchange on the user agent will not fire.
+      // @see [Spec]{@link https://www.w3.org/TR/2011/WD-html5-20110113/video.html#media-element-load-algorithm}
+      this.on(player, 'loadstart', updateContent);
+
+      // Also listen for timeupdate (in the parent) and loadedmetadata because removing those
+      // listeners could have broken dependent applications/libraries. These
+      // can likely be removed for 7.0.
+      this.on(player, 'loadedmetadata', updateContent);
+    }
+
+    /**
+     * Builds the default DOM `className`.
+     *
+     * @return {string}
+     *         The DOM `className` for this object.
+     */
+    buildCSSClass() {
+      return 'vjs-duration';
+    }
+
+    /**
+     * Update duration time display.
+     *
+     * @param {Event} [event]
+     *        The `durationchange`, `timeupdate`, or `loadedmetadata` event that caused
+     *        this function to be called.
+     *
+     * @listens Player#durationchange
+     * @listens Player#timeupdate
+     * @listens Player#loadedmetadata
+     */
+    updateContent(event) {
+      const duration = this.player_.duration();
+      this.updateTextNode_(duration);
+    }
+  }
+
+  /**
+   * The text that is added to the `DurationDisplay` for screen reader users.
+   *
+   * @type {string}
+   * @private
+   */
+  DurationDisplay.prototype.labelText_ = 'Duration';
+
+  /**
+   * The text that should display over the `DurationDisplay`s controls. Added to for localization.
+   *
+   * @type {string}
+   * @protected
+   *
+   * @deprecated in v7; controlText_ is not used in non-active display Components
+   */
+  DurationDisplay.prototype.controlText_ = 'Duration';
+  Component$1.registerComponent('DurationDisplay', DurationDisplay);
+
+  /**
+   * @file time-divider.js
+   */
+
+  /**
+   * The separator between the current time and duration.
+   * Can be hidden if it's not needed in the design.
+   *
+   * @extends Component
+   */
+  class TimeDivider extends Component$1 {
+    /**
+     * Create the component's DOM element
+     *
+     * @return {Element}
+     *         The element that was created.
+     */
+    createEl() {
+      const el = super.createEl('div', {
+        className: 'vjs-time-control vjs-time-divider'
+      }, {
+        // this element and its contents can be hidden from assistive techs since
+        // it is made extraneous by the announcement of the control text
+        // for the current time and duration displays
+        'aria-hidden': true
+      });
+      const div = super.createEl('div');
+      const span = super.createEl('span', {
+        textContent: '/'
+      });
+      div.appendChild(span);
+      el.appendChild(div);
+      return el;
+    }
+  }
+  Component$1.registerComponent('TimeDivider', TimeDivider);
+
+  /**
+   * @file remaining-time-display.js
+   */
+
+  /**
+   * Displays the time left in the video
+   *
+   * @extends Component
+   */
+  class RemainingTimeDisplay extends TimeDisplay {
+    /**
+     * Creates an instance of this class.
+     *
+     * @param { import('../../player').default } player
+     *        The `Player` that this class should be attached to.
+     *
+     * @param {Object} [options]
+     *        The key/value store of player options.
+     */
+    constructor(player, options) {
+      super(player, options);
+      this.on(player, 'durationchange', e => this.updateContent(e));
+    }
+
+    /**
+     * Builds the default DOM `className`.
+     *
+     * @return {string}
+     *         The DOM `className` for this object.
+     */
+    buildCSSClass() {
+      return 'vjs-remaining-time';
+    }
+
+    /**
+     * Create the `Component`'s DOM element with the "minus" character prepend to the time
+     *
+     * @return {Element}
+     *         The element that was created.
+     */
+    createEl() {
+      const el = super.createEl();
+      if (this.options_.displayNegative !== false) {
+        el.insertBefore(createEl('span', {}, {
+          'aria-hidden': true
+        }, '-'), this.contentEl_);
+      }
+      return el;
+    }
+
+    /**
+     * Update remaining time display.
+     *
+     * @param {Event} [event]
+     *        The `timeupdate` or `durationchange` event that caused this to run.
+     *
+     * @listens Player#timeupdate
+     * @listens Player#durationchange
+     */
+    updateContent(event) {
+      if (typeof this.player_.duration() !== 'number') {
+        return;
+      }
+      let time;
+
+      // @deprecated We should only use remainingTimeDisplay
+      // as of video.js 7
+      if (this.player_.ended()) {
+        time = 0;
+      } else if (this.player_.remainingTimeDisplay) {
+        time = this.player_.remainingTimeDisplay();
+      } else {
+        time = this.player_.remainingTime();
+      }
+      this.updateTextNode_(time);
+    }
+  }
+
+  /**
+   * The text that is added to the `RemainingTimeDisplay` for screen reader users.
+   *
+   * @type {string}
+   * @private
+   */
+  RemainingTimeDisplay.prototype.labelText_ = 'Remaining Time';
+
+  /**
+   * The text that should display over the `RemainingTimeDisplay`s controls. Added to for localization.
+   *
+   * @type {string}
+   * @protected
+   *
+   * @deprecated in v7; controlText_ is not used in non-active display Components
+   */
+  RemainingTimeDisplay.prototype.controlText_ = 'Remaining Time';
+  Component$1.registerComponent('RemainingTimeDisplay', RemainingTimeDisplay);
+
+  /**
+   * @file live-display.js
+   */
+
+  // TODO - Future make it click to snap to live
+
+  /**
+   * Displays the live indicator when duration is Infinity.
+   *
+   * @extends Component
+   */
+  class LiveDisplay extends Component$1 {
+    /**
+     * Creates an instance of this class.
+     *
+     * @param { import('./player').default } player
+     *        The `Player` that this class should be attached to.
+     *
+     * @param {Object} [options]
+     *        The key/value store of player options.
+     */
+    constructor(player, options) {
+      super(player, options);
+      this.updateShowing();
+      this.on(this.player(), 'durationchange', e => this.updateShowing(e));
+    }
+
+    /**
+     * Create the `Component`'s DOM element
+     *
+     * @return {Element}
+     *         The element that was created.
+     */
+    createEl() {
+      const el = super.createEl('div', {
+        className: 'vjs-live-control vjs-control'
+      });
+      this.contentEl_ = createEl('div', {
+        className: 'vjs-live-display'
+      }, {
+        'aria-live': 'off'
+      });
+      this.contentEl_.appendChild(createEl('span', {
+        className: 'vjs-control-text',
+        textContent: `${this.localize('Stream Type')}\u00a0`
+      }));
+      this.contentEl_.appendChild(document.createTextNode(this.localize('LIVE')));
+      el.appendChild(this.contentEl_);
+      return el;
+    }
+    dispose() {
+      this.contentEl_ = null;
+      super.dispose();
+    }
+
+    /**
+     * Check the duration to see if the LiveDisplay should be showing or not. Then show/hide
+     * it accordingly
+     *
+     * @param {Event} [event]
+     *        The {@link Player#durationchange} event that caused this function to run.
+     *
+     * @listens Player#durationchange
+     */
+    updateShowing(event) {
+      if (this.player().duration() === Infinity) {
+        this.show();
+      } else {
+        this.hide();
+      }
+    }
+  }
+  Component$1.registerComponent('LiveDisplay', LiveDisplay);
+
+  /**
+   * @file seek-to-live.js
+   */
+
+  /**
+   * Displays the live indicator when duration is Infinity.
+   *
+   * @extends Component
+   */
+  class SeekToLive extends Button {
+    /**
+     * Creates an instance of this class.
+     *
+     * @param { import('./player').default } player
+     *        The `Player` that this class should be attached to.
+     *
+     * @param {Object} [options]
+     *        The key/value store of player options.
+     */
+    constructor(player, options) {
+      super(player, options);
+      this.updateLiveEdgeStatus();
+      if (this.player_.liveTracker) {
+        this.updateLiveEdgeStatusHandler_ = e => this.updateLiveEdgeStatus(e);
+        this.on(this.player_.liveTracker, 'liveedgechange', this.updateLiveEdgeStatusHandler_);
+      }
+    }
+
+    /**
+     * Create the `Component`'s DOM element
+     *
+     * @return {Element}
+     *         The element that was created.
+     */
+    createEl() {
+      const el = super.createEl('button', {
+        className: 'vjs-seek-to-live-control vjs-control'
+      });
+      this.setIcon('circle', el);
+      this.textEl_ = createEl('span', {
+        className: 'vjs-seek-to-live-text',
+        textContent: this.localize('LIVE')
+      }, {
+        'aria-hidden': 'true'
+      });
+      el.appendChild(this.textEl_);
+      return el;
+    }
+
+    /**
+     * Update the state of this button if we are at the live edge
+     * or not
+     */
+    updateLiveEdgeStatus() {
+      // default to live edge
+      if (!this.player_.liveTracker || this.player_.liveTracker.atLiveEdge()) {
+        this.setAttribute('aria-disabled', true);
+        this.addClass('vjs-at-live-edge');
+        this.controlText('Seek to live, currently playing live');
+      } else {
+        this.setAttribute('aria-disabled', false);
+        this.removeClass('vjs-at-live-edge');
+        this.controlText('Seek to live, currently behind live');
+      }
+    }
+
+    /**
+     * On click bring us as near to the live point as possible.
+     * This requires that we wait for the next `live-seekable-change`
+     * event which will happen every segment length seconds.
+     */
+    handleClick() {
+      this.player_.liveTracker.seekToLiveEdge();
+    }
+
+    /**
+     * Dispose of the element and stop tracking
+     */
+    dispose() {
+      if (this.player_.liveTracker) {
+        this.off(this.player_.liveTracker, 'liveedgechange', this.updateLiveEdgeStatusHandler_);
+      }
+      this.textEl_ = null;
+      super.dispose();
+    }
+  }
+  /**
+   * The text that should display over the `SeekToLive`s control. Added for localization.
+   *
+   * @type {string}
+   * @protected
+   */
+  SeekToLive.prototype.controlText_ = 'Seek to live, currently playing live';
+  Component$1.registerComponent('SeekToLive', SeekToLive);
+
+  /**
+   * @file num.js
+   * @module num
+   */
+
+  /**
+   * Keep a number between a min and a max value
+   *
+   * @param {number} number
+   *        The number to clamp
+   *
+   * @param {number} min
+   *        The minimum value
+   * @param {number} max
+   *        The maximum value
+   *
+   * @return {number}
+   *         the clamped number
+   */
+  function clamp(number, min, max) {
+    number = Number(number);
+    return Math.min(max, Math.max(min, isNaN(number) ? min : number));
+  }
+
+  var Num = /*#__PURE__*/Object.freeze({
+    __proto__: null,
+    clamp: clamp
+  });
+
+  /**
+   * @file slider.js
+   */
+
+  /**
+   * The base functionality for a slider. Can be vertical or horizontal.
+   * For instance the volume bar or the seek bar on a video is a slider.
+   *
+   * @extends Component
+   */
+  class Slider extends Component$1 {
+    /**
+    * Create an instance of this class
+    *
+    * @param { import('../player').default } player
+    *        The `Player` that this class should be attached to.
+    *
+    * @param {Object} [options]
+    *        The key/value store of player options.
+    */
+    constructor(player, options) {
+      super(player, options);
+      this.handleMouseDown_ = e => this.handleMouseDown(e);
+      this.handleMouseUp_ = e => this.handleMouseUp(e);
+      this.handleKeyDown_ = e => this.handleKeyDown(e);
+      this.handleClick_ = e => this.handleClick(e);
+      this.handleMouseMove_ = e => this.handleMouseMove(e);
+      this.update_ = e => this.update(e);
+
+      // Set property names to bar to match with the child Slider class is looking for
+      this.bar = this.getChild(this.options_.barName);
+
+      // Set a horizontal or vertical class on the slider depending on the slider type
+      this.vertical(!!this.options_.vertical);
+      this.enable();
+    }
+
+    /**
+     * Are controls are currently enabled for this slider or not.
+     *
+     * @return {boolean}
+     *         true if controls are enabled, false otherwise
+     */
+    enabled() {
+      return this.enabled_;
+    }
+
+    /**
+     * Enable controls for this slider if they are disabled
+     */
+    enable() {
+      if (this.enabled()) {
+        return;
+      }
+      this.on('mousedown', this.handleMouseDown_);
+      this.on('touchstart', this.handleMouseDown_);
+      this.on('keydown', this.handleKeyDown_);
+      this.on('click', this.handleClick_);
+
+      // TODO: deprecated, controlsvisible does not seem to be fired
+      this.on(this.player_, 'controlsvisible', this.update);
+      if (this.playerEvent) {
+        this.on(this.player_, this.playerEvent, this.update);
+      }
+      this.removeClass('disabled');
+      this.setAttribute('tabindex', 0);
+      this.enabled_ = true;
+    }
+
+    /**
+     * Disable controls for this slider if they are enabled
+     */
+    disable() {
+      if (!this.enabled()) {
+        return;
+      }
+      const doc = this.bar.el_.ownerDocument;
+      this.off('mousedown', this.handleMouseDown_);
+      this.off('touchstart', this.handleMouseDown_);
+      this.off('keydown', this.handleKeyDown_);
+      this.off('click', this.handleClick_);
+      this.off(this.player_, 'controlsvisible', this.update_);
+      this.off(doc, 'mousemove', this.handleMouseMove_);
+      this.off(doc, 'mouseup', this.handleMouseUp_);
+      this.off(doc, 'touchmove', this.handleMouseMove_);
+      this.off(doc, 'touchend', this.handleMouseUp_);
+      this.removeAttribute('tabindex');
+      this.addClass('disabled');
+      if (this.playerEvent) {
+        this.off(this.player_, this.playerEvent, this.update);
+      }
+      this.enabled_ = false;
+    }
+
+    /**
+     * Create the `Slider`s DOM element.
+     *
+     * @param {string} type
+     *        Type of element to create.
+     *
+     * @param {Object} [props={}]
+     *        List of properties in Object form.
+     *
+     * @param {Object} [attributes={}]
+     *        list of attributes in Object form.
+     *
+     * @return {Element}
+     *         The element that gets created.
+     */
+    createEl(type, props = {}, attributes = {}) {
+      // Add the slider element class to all sub classes
+      props.className = props.className + ' vjs-slider';
+      props = Object.assign({
+        tabIndex: 0
+      }, props);
+      attributes = Object.assign({
+        'role': 'slider',
+        'aria-valuenow': 0,
+        'aria-valuemin': 0,
+        'aria-valuemax': 100
+      }, attributes);
+      return super.createEl(type, props, attributes);
+    }
+
+    /**
+     * Handle `mousedown` or `touchstart` events on the `Slider`.
+     *
+     * @param {MouseEvent} event
+     *        `mousedown` or `touchstart` event that triggered this function
+     *
+     * @listens mousedown
+     * @listens touchstart
+     * @fires Slider#slideractive
+     */
+    handleMouseDown(event) {
+      const doc = this.bar.el_.ownerDocument;
+      if (event.type === 'mousedown') {
+        event.preventDefault();
+      }
+      // Do not call preventDefault() on touchstart in Chrome
+      // to avoid console warnings. Use a 'touch-action: none' style
+      // instead to prevent unintended scrolling.
+      // https://developers.google.com/web/updates/2017/01/scrolling-intervention
+      if (event.type === 'touchstart' && !IS_CHROME) {
+        event.preventDefault();
+      }
+      blockTextSelection();
+      this.addClass('vjs-sliding');
+      /**
+       * Triggered when the slider is in an active state
+       *
+       * @event Slider#slideractive
+       * @type {MouseEvent}
+       */
+      this.trigger('slideractive');
+      this.on(doc, 'mousemove', this.handleMouseMove_);
+      this.on(doc, 'mouseup', this.handleMouseUp_);
+      this.on(doc, 'touchmove', this.handleMouseMove_);
+      this.on(doc, 'touchend', this.handleMouseUp_);
+      this.handleMouseMove(event, true);
+    }
+
+    /**
+     * Handle the `mousemove`, `touchmove`, and `mousedown` events on this `Slider`.
+     * The `mousemove` and `touchmove` events will only only trigger this function during
+     * `mousedown` and `touchstart`. This is due to {@link Slider#handleMouseDown} and
+     * {@link Slider#handleMouseUp}.
+     *
+     * @param {MouseEvent} event
+     *        `mousedown`, `mousemove`, `touchstart`, or `touchmove` event that triggered
+     *        this function
+     * @param {boolean} mouseDown this is a flag that should be set to true if `handleMouseMove` is called directly. It allows us to skip things that should not happen if coming from mouse down but should happen on regular mouse move handler. Defaults to false.
+     *
+     * @listens mousemove
+     * @listens touchmove
+     */
+    handleMouseMove(event) {}
+
+    /**
+     * Handle `mouseup` or `touchend` events on the `Slider`.
+     *
+     * @param {MouseEvent} event
+     *        `mouseup` or `touchend` event that triggered this function.
+     *
+     * @listens touchend
+     * @listens mouseup
+     * @fires Slider#sliderinactive
+     */
+    handleMouseUp(event) {
+      const doc = this.bar.el_.ownerDocument;
+      unblockTextSelection();
+      this.removeClass('vjs-sliding');
+      /**
+       * Triggered when the slider is no longer in an active state.
+       *
+       * @event Slider#sliderinactive
+       * @type {Event}
+       */
+      this.trigger('sliderinactive');
+      this.off(doc, 'mousemove', this.handleMouseMove_);
+      this.off(doc, 'mouseup', this.handleMouseUp_);
+      this.off(doc, 'touchmove', this.handleMouseMove_);
+      this.off(doc, 'touchend', this.handleMouseUp_);
+      this.update();
+    }
+
+    /**
+     * Update the progress bar of the `Slider`.
+     *
+     * @return {number}
+     *          The percentage of progress the progress bar represents as a
+     *          number from 0 to 1.
+     */
+    update() {
+      // In VolumeBar init we have a setTimeout for update that pops and update
+      // to the end of the execution stack. The player is destroyed before then
+      // update will cause an error
+      // If there's no bar...
+      if (!this.el_ || !this.bar) {
+        return;
+      }
+
+      // clamp progress between 0 and 1
+      // and only round to four decimal places, as we round to two below
+      const progress = this.getProgress();
+      if (progress === this.progress_) {
+        return progress;
+      }
+      this.progress_ = progress;
+      this.requestNamedAnimationFrame('Slider#update', () => {
+        // Set the new bar width or height
+        const sizeKey = this.vertical() ? 'height' : 'width';
+
+        // Convert to a percentage for css value
+        this.bar.el().style[sizeKey] = (progress * 100).toFixed(2) + '%';
+      });
+      return progress;
+    }
+
+    /**
+     * Get the percentage of the bar that should be filled
+     * but clamped and rounded.
+     *
+     * @return {number}
+     *         percentage filled that the slider is
+     */
+    getProgress() {
+      return Number(clamp(this.getPercent(), 0, 1).toFixed(4));
+    }
+
+    /**
+     * Calculate distance for slider
+     *
+     * @param {Event} event
+     *        The event that caused this function to run.
+     *
+     * @return {number}
+     *         The current position of the Slider.
+     *         - position.x for vertical `Slider`s
+     *         - position.y for horizontal `Slider`s
+     */
+    calculateDistance(event) {
+      const position = getPointerPosition(this.el_, event);
+      if (this.vertical()) {
+        return position.y;
+      }
+      return position.x;
+    }
+
+    /**
+     * Handle a `keydown` event on the `Slider`. Watches for left, right, up, and down
+     * arrow keys. This function will only be called when the slider has focus. See
+     * {@link Slider#handleFocus} and {@link Slider#handleBlur}.
+     *
+     * @param {KeyboardEvent} event
+     *        the `keydown` event that caused this function to run.
+     *
+     * @listens keydown
+     */
+    handleKeyDown(event) {
+      // Left and Down Arrows
+      if (keycode.isEventKey(event, 'Left') || keycode.isEventKey(event, 'Down')) {
+        event.preventDefault();
+        event.stopPropagation();
+        this.stepBack();
+
+        // Up and Right Arrows
+      } else if (keycode.isEventKey(event, 'Right') || keycode.isEventKey(event, 'Up')) {
+        event.preventDefault();
+        event.stopPropagation();
+        this.stepForward();
+      } else {
+        // Pass keydown handling up for unsupported keys
+        super.handleKeyDown(event);
+      }
+    }
+
+    /**
+     * Listener for click events on slider, used to prevent clicks
+     *   from bubbling up to parent elements like button menus.
+     *
+     * @param {Object} event
+     *        Event that caused this object to run
+     */
+    handleClick(event) {
+      event.stopPropagation();
+      event.preventDefault();
+    }
+
+    /**
+     * Get/set if slider is horizontal for vertical
+     *
+     * @param {boolean} [bool]
+     *        - true if slider is vertical,
+     *        - false is horizontal
+     *
+     * @return {boolean}
+     *         - true if slider is vertical, and getting
+     *         - false if the slider is horizontal, and getting
+     */
+    vertical(bool) {
+      if (bool === undefined) {
+        return this.vertical_ || false;
+      }
+      this.vertical_ = !!bool;
+      if (this.vertical_) {
+        this.addClass('vjs-slider-vertical');
+      } else {
+        this.addClass('vjs-slider-horizontal');
+      }
+    }
+  }
+  Component$1.registerComponent('Slider', Slider);
+
+  /**
+   * @file load-progress-bar.js
+   */
+
+  // get the percent width of a time compared to the total end
+  const percentify = (time, end) => clamp(time / end * 100, 0, 100).toFixed(2) + '%';
+
+  /**
+   * Shows loading progress
+   *
+   * @extends Component
+   */
+  class LoadProgressBar extends Component$1 {
+    /**
+     * Creates an instance of this class.
+     *
+     * @param { import('../../player').default } player
+     *        The `Player` that this class should be attached to.
+     *
+     * @param {Object} [options]
+     *        The key/value store of player options.
+     */
+    constructor(player, options) {
+      super(player, options);
+      this.partEls_ = [];
+      this.on(player, 'progress', e => this.update(e));
+    }
+
+    /**
+     * Create the `Component`'s DOM element
+     *
+     * @return {Element}
+     *         The element that was created.
+     */
+    createEl() {
+      const el = super.createEl('div', {
+        className: 'vjs-load-progress'
+      });
+      const wrapper = createEl('span', {
+        className: 'vjs-control-text'
+      });
+      const loadedText = createEl('span', {
+        textContent: this.localize('Loaded')
+      });
+      const separator = document.createTextNode(': ');
+      this.percentageEl_ = createEl('span', {
+        className: 'vjs-control-text-loaded-percentage',
+        textContent: '0%'
+      });
+      el.appendChild(wrapper);
+      wrapper.appendChild(loadedText);
+      wrapper.appendChild(separator);
+      wrapper.appendChild(this.percentageEl_);
+      return el;
+    }
+    dispose() {
+      this.partEls_ = null;
+      this.percentageEl_ = null;
+      super.dispose();
+    }
+
+    /**
+     * Update progress bar
+     *
+     * @param {Event} [event]
+     *        The `progress` event that caused this function to run.
+     *
+     * @listens Player#progress
+     */
+    update(event) {
+      this.requestNamedAnimationFrame('LoadProgressBar#update', () => {
+        const liveTracker = this.player_.liveTracker;
+        const buffered = this.player_.buffered();
+        const duration = liveTracker && liveTracker.isLive() ? liveTracker.seekableEnd() : this.player_.duration();
+        const bufferedEnd = this.player_.bufferedEnd();
+        const children = this.partEls_;
+        const percent = percentify(bufferedEnd, duration);
+        if (this.percent_ !== percent) {
+          // update the width of the progress bar
+          this.el_.style.width = percent;
+          // update the control-text
+          textContent(this.percentageEl_, percent);
+          this.percent_ = percent;
+        }
+
+        // add child elements to represent the individual buffered time ranges
+        for (let i = 0; i < buffered.length; i++) {
+          const start = buffered.start(i);
+          const end = buffered.end(i);
+          let part = children[i];
+          if (!part) {
+            part = this.el_.appendChild(createEl());
+            children[i] = part;
+          }
+
+          //  only update if changed
+          if (part.dataset.start === start && part.dataset.end === end) {
+            continue;
+          }
+          part.dataset.start = start;
+          part.dataset.end = end;
+
+          // set the percent based on the width of the progress bar (bufferedEnd)
+          part.style.left = percentify(start, bufferedEnd);
+          part.style.width = percentify(end - start, bufferedEnd);
+        }
+
+        // remove unused buffered range elements
+        for (let i = children.length; i > buffered.length; i--) {
+          this.el_.removeChild(children[i - 1]);
+        }
+        children.length = buffered.length;
+      });
+    }
+  }
+  Component$1.registerComponent('LoadProgressBar', LoadProgressBar);
+
+  /**
+   * @file time-tooltip.js
+   */
+
+  /**
+   * Time tooltips display a time above the progress bar.
+   *
+   * @extends Component
+   */
+  class TimeTooltip extends Component$1 {
+    /**
+     * Creates an instance of this class.
+     *
+     * @param { import('../../player').default } player
+     *        The {@link Player} that this class should be attached to.
+     *
+     * @param {Object} [options]
+     *        The key/value store of player options.
+     */
+    constructor(player, options) {
+      super(player, options);
+      this.update = throttle(bind_(this, this.update), UPDATE_REFRESH_INTERVAL);
+    }
+
+    /**
+     * Create the time tooltip DOM element
+     *
+     * @return {Element}
+     *         The element that was created.
+     */
+    createEl() {
+      return super.createEl('div', {
+        className: 'vjs-time-tooltip'
+      }, {
+        'aria-hidden': 'true'
+      });
+    }
+
+    /**
+     * Updates the position of the time tooltip relative to the `SeekBar`.
+     *
+     * @param {Object} seekBarRect
+     *        The `ClientRect` for the {@link SeekBar} element.
+     *
+     * @param {number} seekBarPoint
+     *        A number from 0 to 1, representing a horizontal reference point
+     *        from the left edge of the {@link SeekBar}
+     */
+    update(seekBarRect, seekBarPoint, content) {
+      const tooltipRect = findPosition(this.el_);
+      const playerRect = getBoundingClientRect(this.player_.el());
+      const seekBarPointPx = seekBarRect.width * seekBarPoint;
+
+      // do nothing if either rect isn't available
+      // for example, if the player isn't in the DOM for testing
+      if (!playerRect || !tooltipRect) {
+        return;
+      }
+
+      // This is the space left of the `seekBarPoint` available within the bounds
+      // of the player. We calculate any gap between the left edge of the player
+      // and the left edge of the `SeekBar` and add the number of pixels in the
+      // `SeekBar` before hitting the `seekBarPoint`
+      let spaceLeftOfPoint = seekBarRect.left - playerRect.left + seekBarPointPx;
+
+      // This is the space right of the `seekBarPoint` available within the bounds
+      // of the player. We calculate the number of pixels from the `seekBarPoint`
+      // to the right edge of the `SeekBar` and add to that any gap between the
+      // right edge of the `SeekBar` and the player.
+      let spaceRightOfPoint = seekBarRect.width - seekBarPointPx + (playerRect.right - seekBarRect.right);
+
+      // spaceRightOfPoint is always NaN for mouse time display
+      // because the seekbarRect does not have a right property. This causes
+      // the mouse tool tip to be truncated when it's close to the right edge of the player.
+      // In such cases, we ignore the `playerRect.right - seekBarRect.right` value when calculating.
+      // For the sake of consistency, we ignore seekBarRect.left - playerRect.left for the left edge.
+      if (!spaceRightOfPoint) {
+        spaceRightOfPoint = seekBarRect.width - seekBarPointPx;
+        spaceLeftOfPoint = seekBarPointPx;
+      }
+      // This is the number of pixels by which the tooltip will need to be pulled
+      // further to the right to center it over the `seekBarPoint`.
+      let pullTooltipBy = tooltipRect.width / 2;
+
+      // Adjust the `pullTooltipBy` distance to the left or right depending on
+      // the results of the space calculations above.
+      if (spaceLeftOfPoint < pullTooltipBy) {
+        pullTooltipBy += pullTooltipBy - spaceLeftOfPoint;
+      } else if (spaceRightOfPoint < pullTooltipBy) {
+        pullTooltipBy = spaceRightOfPoint;
+      }
+
+      // Due to the imprecision of decimal/ratio based calculations and varying
+      // rounding behaviors, there are cases where the spacing adjustment is off
+      // by a pixel or two. This adds insurance to these calculations.
+      if (pullTooltipBy < 0) {
+        pullTooltipBy = 0;
+      } else if (pullTooltipBy > tooltipRect.width) {
+        pullTooltipBy = tooltipRect.width;
+      }
+
+      // prevent small width fluctuations within 0.4px from
+      // changing the value below.
+      // This really helps for live to prevent the play
+      // progress time tooltip from jittering
+      pullTooltipBy = Math.round(pullTooltipBy);
+      this.el_.style.right = `-${pullTooltipBy}px`;
+      this.write(content);
+    }
+
+    /**
+     * Write the time to the tooltip DOM element.
+     *
+     * @param {string} content
+     *        The formatted time for the tooltip.
+     */
+    write(content) {
+      textContent(this.el_, content);
+    }
+
+    /**
+     * Updates the position of the time tooltip relative to the `SeekBar`.
+     *
+     * @param {Object} seekBarRect
+     *        The `ClientRect` for the {@link SeekBar} element.
+     *
+     * @param {number} seekBarPoint
+     *        A number from 0 to 1, representing a horizontal reference point
+     *        from the left edge of the {@link SeekBar}
+     *
+     * @param {number} time
+     *        The time to update the tooltip to, not used during live playback
+     *
+     * @param {Function} cb
+     *        A function that will be called during the request animation frame
+     *        for tooltips that need to do additional animations from the default
+     */
+    updateTime(seekBarRect, seekBarPoint, time, cb) {
+      this.requestNamedAnimationFrame('TimeTooltip#updateTime', () => {
+        let content;
+        const duration = this.player_.duration();
+        if (this.player_.liveTracker && this.player_.liveTracker.isLive()) {
+          const liveWindow = this.player_.liveTracker.liveWindow();
+          const secondsBehind = liveWindow - seekBarPoint * liveWindow;
+          content = (secondsBehind < 1 ? '' : '-') + formatTime(secondsBehind, liveWindow);
+        } else {
+          content = formatTime(time, duration);
+        }
+        this.update(seekBarRect, seekBarPoint, content);
+        if (cb) {
+          cb();
+        }
+      });
+    }
+  }
+  Component$1.registerComponent('TimeTooltip', TimeTooltip);
+
+  /**
+   * @file play-progress-bar.js
+   */
+
+  /**
+   * Used by {@link SeekBar} to display media playback progress as part of the
+   * {@link ProgressControl}.
+   *
+   * @extends Component
+   */
+  class PlayProgressBar extends Component$1 {
+    /**
+     * Creates an instance of this class.
+     *
+     * @param { import('../../player').default } player
+     *        The {@link Player} that this class should be attached to.
+     *
+     * @param {Object} [options]
+     *        The key/value store of player options.
+     */
+    constructor(player, options) {
+      super(player, options);
+      this.setIcon('circle');
+      this.update = throttle(bind_(this, this.update), UPDATE_REFRESH_INTERVAL);
+    }
+
+    /**
+     * Create the the DOM element for this class.
+     *
+     * @return {Element}
+     *         The element that was created.
+     */
+    createEl() {
+      return super.createEl('div', {
+        className: 'vjs-play-progress vjs-slider-bar'
+      }, {
+        'aria-hidden': 'true'
+      });
+    }
+
+    /**
+     * Enqueues updates to its own DOM as well as the DOM of its
+     * {@link TimeTooltip} child.
+     *
+     * @param {Object} seekBarRect
+     *        The `ClientRect` for the {@link SeekBar} element.
+     *
+     * @param {number} seekBarPoint
+     *        A number from 0 to 1, representing a horizontal reference point
+     *        from the left edge of the {@link SeekBar}
+     */
+    update(seekBarRect, seekBarPoint) {
+      const timeTooltip = this.getChild('timeTooltip');
+      if (!timeTooltip) {
+        return;
+      }
+      const time = this.player_.scrubbing() ? this.player_.getCache().currentTime : this.player_.currentTime();
+      timeTooltip.updateTime(seekBarRect, seekBarPoint, time);
+    }
+  }
+
+  /**
+   * Default options for {@link PlayProgressBar}.
+   *
+   * @type {Object}
+   * @private
+   */
+  PlayProgressBar.prototype.options_ = {
+    children: []
+  };
+
+  // Time tooltips should not be added to a player on mobile devices
+  if (!IS_IOS && !IS_ANDROID) {
+    PlayProgressBar.prototype.options_.children.push('timeTooltip');
+  }
+  Component$1.registerComponent('PlayProgressBar', PlayProgressBar);
+
+  /**
+   * @file mouse-time-display.js
+   */
+
+  /**
+   * The {@link MouseTimeDisplay} component tracks mouse movement over the
+   * {@link ProgressControl}. It displays an indicator and a {@link TimeTooltip}
+   * indicating the time which is represented by a given point in the
+   * {@link ProgressControl}.
+   *
+   * @extends Component
+   */
+  class MouseTimeDisplay extends Component$1 {
+    /**
+     * Creates an instance of this class.
+     *
+     * @param { import('../../player').default } player
+     *        The {@link Player} that this class should be attached to.
+     *
+     * @param {Object} [options]
+     *        The key/value store of player options.
+     */
+    constructor(player, options) {
+      super(player, options);
+      this.update = throttle(bind_(this, this.update), UPDATE_REFRESH_INTERVAL);
+    }
+
+    /**
+     * Create the DOM element for this class.
+     *
+     * @return {Element}
+     *         The element that was created.
+     */
+    createEl() {
+      return super.createEl('div', {
+        className: 'vjs-mouse-display'
+      });
+    }
+
+    /**
+     * Enqueues updates to its own DOM as well as the DOM of its
+     * {@link TimeTooltip} child.
+     *
+     * @param {Object} seekBarRect
+     *        The `ClientRect` for the {@link SeekBar} element.
+     *
+     * @param {number} seekBarPoint
+     *        A number from 0 to 1, representing a horizontal reference point
+     *        from the left edge of the {@link SeekBar}
+     */
+    update(seekBarRect, seekBarPoint) {
+      const time = seekBarPoint * this.player_.duration();
+      this.getChild('timeTooltip').updateTime(seekBarRect, seekBarPoint, time, () => {
+        this.el_.style.left = `${seekBarRect.width * seekBarPoint}px`;
+      });
+    }
+  }
+
+  /**
+   * Default options for `MouseTimeDisplay`
+   *
+   * @type {Object}
+   * @private
+   */
+  MouseTimeDisplay.prototype.options_ = {
+    children: ['timeTooltip']
+  };
+  Component$1.registerComponent('MouseTimeDisplay', MouseTimeDisplay);
+
+  /**
+   * @file seek-bar.js
+   */
+
+  // The number of seconds the `step*` functions move the timeline.
+  const STEP_SECONDS = 5;
+
+  // The multiplier of STEP_SECONDS that PgUp/PgDown move the timeline.
+  const PAGE_KEY_MULTIPLIER = 12;
+
+  /**
+   * Seek bar and container for the progress bars. Uses {@link PlayProgressBar}
+   * as its `bar`.
+   *
+   * @extends Slider
+   */
+  class SeekBar extends Slider {
+    /**
+     * Creates an instance of this class.
+     *
+     * @param { import('../../player').default } player
+     *        The `Player` that this class should be attached to.
+     *
+     * @param {Object} [options]
+     *        The key/value store of player options.
+     */
+    constructor(player, options) {
+      super(player, options);
+      this.setEventHandlers_();
+    }
+
+    /**
+     * Sets the event handlers
+     *
+     * @private
+     */
+    setEventHandlers_() {
+      this.update_ = bind_(this, this.update);
+      this.update = throttle(this.update_, UPDATE_REFRESH_INTERVAL);
+      this.on(this.player_, ['ended', 'durationchange', 'timeupdate'], this.update);
+      if (this.player_.liveTracker) {
+        this.on(this.player_.liveTracker, 'liveedgechange', this.update);
+      }
+
+      // when playing, let's ensure we smoothly update the play progress bar
+      // via an interval
+      this.updateInterval = null;
+      this.enableIntervalHandler_ = e => this.enableInterval_(e);
+      this.disableIntervalHandler_ = e => this.disableInterval_(e);
+      this.on(this.player_, ['playing'], this.enableIntervalHandler_);
+      this.on(this.player_, ['ended', 'pause', 'waiting'], this.disableIntervalHandler_);
+
+      // we don't need to update the play progress if the document is hidden,
+      // also, this causes the CPU to spike and eventually crash the page on IE11.
+      if ('hidden' in document && 'visibilityState' in document) {
+        this.on(document, 'visibilitychange', this.toggleVisibility_);
+      }
+    }
+    toggleVisibility_(e) {
+      if (document.visibilityState === 'hidden') {
+        this.cancelNamedAnimationFrame('SeekBar#update');
+        this.cancelNamedAnimationFrame('Slider#update');
+        this.disableInterval_(e);
+      } else {
+        if (!this.player_.ended() && !this.player_.paused()) {
+          this.enableInterval_();
+        }
+
+        // we just switched back to the page and someone may be looking, so, update ASAP
+        this.update();
+      }
+    }
+    enableInterval_() {
+      if (this.updateInterval) {
+        return;
+      }
+      this.updateInterval = this.setInterval(this.update, UPDATE_REFRESH_INTERVAL);
+    }
+    disableInterval_(e) {
+      if (this.player_.liveTracker && this.player_.liveTracker.isLive() && e && e.type !== 'ended') {
+        return;
+      }
+      if (!this.updateInterval) {
+        return;
+      }
+      this.clearInterval(this.updateInterval);
+      this.updateInterval = null;
+    }
+
+    /**
+     * Create the `Component`'s DOM element
+     *
+     * @return {Element}
+     *         The element that was created.
+     */
+    createEl() {
+      return super.createEl('div', {
+        className: 'vjs-progress-holder'
+      }, {
+        'aria-label': this.localize('Progress Bar')
+      });
+    }
+
+    /**
+     * This function updates the play progress bar and accessibility
+     * attributes to whatever is passed in.
+     *
+     * @param {Event} [event]
+     *        The `timeupdate` or `ended` event that caused this to run.
+     *
+     * @listens Player#timeupdate
+     *
+     * @return {number}
+     *          The current percent at a number from 0-1
+     */
+    update(event) {
+      // ignore updates while the tab is hidden
+      if (document.visibilityState === 'hidden') {
+        return;
+      }
+      const percent = super.update();
+      this.requestNamedAnimationFrame('SeekBar#update', () => {
+        const currentTime = this.player_.ended() ? this.player_.duration() : this.getCurrentTime_();
+        const liveTracker = this.player_.liveTracker;
+        let duration = this.player_.duration();
+        if (liveTracker && liveTracker.isLive()) {
+          duration = this.player_.liveTracker.liveCurrentTime();
+        }
+        if (this.percent_ !== percent) {
+          // machine readable value of progress bar (percentage complete)
+          this.el_.setAttribute('aria-valuenow', (percent * 100).toFixed(2));
+          this.percent_ = percent;
+        }
+        if (this.currentTime_ !== currentTime || this.duration_ !== duration) {
+          // human readable value of progress bar (time complete)
+          this.el_.setAttribute('aria-valuetext', this.localize('progress bar timing: currentTime={1} duration={2}', [formatTime(currentTime, duration), formatTime(duration, duration)], '{1} of {2}'));
+          this.currentTime_ = currentTime;
+          this.duration_ = duration;
+        }
+
+        // update the progress bar time tooltip with the current time
+        if (this.bar) {
+          this.bar.update(getBoundingClientRect(this.el()), this.getProgress());
+        }
+      });
+      return percent;
+    }
+
+    /**
+     * Prevent liveThreshold from causing seeks to seem like they
+     * are not happening from a user perspective.
+     *
+     * @param {number} ct
+     *        current time to seek to
+     */
+    userSeek_(ct) {
+      if (this.player_.liveTracker && this.player_.liveTracker.isLive()) {
+        this.player_.liveTracker.nextSeekedFromUser();
+      }
+      this.player_.currentTime(ct);
+    }
+
+    /**
+     * Get the value of current time but allows for smooth scrubbing,
+     * when player can't keep up.
+     *
+     * @return {number}
+     *         The current time value to display
+     *
+     * @private
+     */
+    getCurrentTime_() {
+      return this.player_.scrubbing() ? this.player_.getCache().currentTime : this.player_.currentTime();
+    }
+
+    /**
+     * Get the percentage of media played so far.
+     *
+     * @return {number}
+     *         The percentage of media played so far (0 to 1).
+     */
+    getPercent() {
+      const currentTime = this.getCurrentTime_();
+      let percent;
+      const liveTracker = this.player_.liveTracker;
+      if (liveTracker && liveTracker.isLive()) {
+        percent = (currentTime - liveTracker.seekableStart()) / liveTracker.liveWindow();
+
+        // prevent the percent from changing at the live edge
+        if (liveTracker.atLiveEdge()) {
+          percent = 1;
+        }
+      } else {
+        percent = currentTime / this.player_.duration();
+      }
+      return percent;
+    }
+
+    /**
+     * Handle mouse down on seek bar
+     *
+     * @param {MouseEvent} event
+     *        The `mousedown` event that caused this to run.
+     *
+     * @listens mousedown
+     */
+    handleMouseDown(event) {
+      if (!isSingleLeftClick(event)) {
+        return;
+      }
+
+      // Stop event propagation to prevent double fire in progress-control.js
+      event.stopPropagation();
+      this.videoWasPlaying = !this.player_.paused();
+      this.player_.pause();
+      super.handleMouseDown(event);
+    }
+
+    /**
+     * Handle mouse move on seek bar
+     *
+     * @param {MouseEvent} event
+     *        The `mousemove` event that caused this to run.
+     * @param {boolean} mouseDown this is a flag that should be set to true if `handleMouseMove` is called directly. It allows us to skip things that should not happen if coming from mouse down but should happen on regular mouse move handler. Defaults to false
+     *
+     * @listens mousemove
+     */
+    handleMouseMove(event, mouseDown = false) {
+      if (!isSingleLeftClick(event) || isNaN(this.player_.duration())) {
+        return;
+      }
+      if (!mouseDown && !this.player_.scrubbing()) {
+        this.player_.scrubbing(true);
+      }
+      let newTime;
+      const distance = this.calculateDistance(event);
+      const liveTracker = this.player_.liveTracker;
+      if (!liveTracker || !liveTracker.isLive()) {
+        newTime = distance * this.player_.duration();
+
+        // Don't let video end while scrubbing.
+        if (newTime === this.player_.duration()) {
+          newTime = newTime - 0.1;
+        }
+      } else {
+        if (distance >= 0.99) {
+          liveTracker.seekToLiveEdge();
+          return;
+        }
+        const seekableStart = liveTracker.seekableStart();
+        const seekableEnd = liveTracker.liveCurrentTime();
+        newTime = seekableStart + distance * liveTracker.liveWindow();
+
+        // Don't let video end while scrubbing.
+        if (newTime >= seekableEnd) {
+          newTime = seekableEnd;
+        }
+
+        // Compensate for precision differences so that currentTime is not less
+        // than seekable start
+        if (newTime <= seekableStart) {
+          newTime = seekableStart + 0.1;
+        }
+
+        // On android seekableEnd can be Infinity sometimes,
+        // this will cause newTime to be Infinity, which is
+        // not a valid currentTime.
+        if (newTime === Infinity) {
+          return;
+        }
+      }
+
+      // Set new time (tell player to seek to new time)
+      this.userSeek_(newTime);
+      if (this.player_.options_.enableSmoothSeeking) {
+        this.update();
+      }
+    }
+    enable() {
+      super.enable();
+      const mouseTimeDisplay = this.getChild('mouseTimeDisplay');
+      if (!mouseTimeDisplay) {
+        return;
+      }
+      mouseTimeDisplay.show();
+    }
+    disable() {
+      super.disable();
+      const mouseTimeDisplay = this.getChild('mouseTimeDisplay');
+      if (!mouseTimeDisplay) {
+        return;
+      }
+      mouseTimeDisplay.hide();
+    }
+
+    /**
+     * Handle mouse up on seek bar
+     *
+     * @param {MouseEvent} event
+     *        The `mouseup` event that caused this to run.
+     *
+     * @listens mouseup
+     */
+    handleMouseUp(event) {
+      super.handleMouseUp(event);
+
+      // Stop event propagation to prevent double fire in progress-control.js
+      if (event) {
+        event.stopPropagation();
+      }
+      this.player_.scrubbing(false);
+
+      /**
+       * Trigger timeupdate because we're done seeking and the time has changed.
+       * This is particularly useful for if the player is paused to time the time displays.
+       *
+       * @event Tech#timeupdate
+       * @type {Event}
+       */
+      this.player_.trigger({
+        type: 'timeupdate',
+        target: this,
+        manuallyTriggered: true
+      });
+      if (this.videoWasPlaying) {
+        silencePromise(this.player_.play());
+      } else {
+        // We're done seeking and the time has changed.
+        // If the player is paused, make sure we display the correct time on the seek bar.
+        this.update_();
+      }
+    }
+
+    /**
+     * Move more quickly fast forward for keyboard-only users
+     */
+    stepForward() {
+      this.userSeek_(this.player_.currentTime() + STEP_SECONDS);
+    }
+
+    /**
+     * Move more quickly rewind for keyboard-only users
+     */
+    stepBack() {
+      this.userSeek_(this.player_.currentTime() - STEP_SECONDS);
+    }
+
+    /**
+     * Toggles the playback state of the player
+     * This gets called when enter or space is used on the seekbar
+     *
+     * @param {KeyboardEvent} event
+     *        The `keydown` event that caused this function to be called
+     *
+     */
+    handleAction(event) {
+      if (this.player_.paused()) {
+        this.player_.play();
+      } else {
+        this.player_.pause();
+      }
+    }
+
+    /**
+     * Called when this SeekBar has focus and a key gets pressed down.
+     * Supports the following keys:
+     *
+     *   Space or Enter key fire a click event
+     *   Home key moves to start of the timeline
+     *   End key moves to end of the timeline
+     *   Digit "0" through "9" keys move to 0%, 10% ... 80%, 90% of the timeline
+     *   PageDown key moves back a larger step than ArrowDown
+     *   PageUp key moves forward a large step
+     *
+     * @param {KeyboardEvent} event
+     *        The `keydown` event that caused this function to be called.
+     *
+     * @listens keydown
+     */
+    handleKeyDown(event) {
+      const liveTracker = this.player_.liveTracker;
+      if (keycode.isEventKey(event, 'Space') || keycode.isEventKey(event, 'Enter')) {
+        event.preventDefault();
+        event.stopPropagation();
+        this.handleAction(event);
+      } else if (keycode.isEventKey(event, 'Home')) {
+        event.preventDefault();
+        event.stopPropagation();
+        this.userSeek_(0);
+      } else if (keycode.isEventKey(event, 'End')) {
+        event.preventDefault();
+        event.stopPropagation();
+        if (liveTracker && liveTracker.isLive()) {
+          this.userSeek_(liveTracker.liveCurrentTime());
+        } else {
+          this.userSeek_(this.player_.duration());
+        }
+      } else if (/^[0-9]$/.test(keycode(event))) {
+        event.preventDefault();
+        event.stopPropagation();
+        const gotoFraction = (keycode.codes[keycode(event)] - keycode.codes['0']) * 10.0 / 100.0;
+        if (liveTracker && liveTracker.isLive()) {
+          this.userSeek_(liveTracker.seekableStart() + liveTracker.liveWindow() * gotoFraction);
+        } else {
+          this.userSeek_(this.player_.duration() * gotoFraction);
+        }
+      } else if (keycode.isEventKey(event, 'PgDn')) {
+        event.preventDefault();
+        event.stopPropagation();
+        this.userSeek_(this.player_.currentTime() - STEP_SECONDS * PAGE_KEY_MULTIPLIER);
+      } else if (keycode.isEventKey(event, 'PgUp')) {
+        event.preventDefault();
+        event.stopPropagation();
+        this.userSeek_(this.player_.currentTime() + STEP_SECONDS * PAGE_KEY_MULTIPLIER);
+      } else {
+        // Pass keydown handling up for unsupported keys
+        super.handleKeyDown(event);
+      }
+    }
+    dispose() {
+      this.disableInterval_();
+      this.off(this.player_, ['ended', 'durationchange', 'timeupdate'], this.update);
+      if (this.player_.liveTracker) {
+        this.off(this.player_.liveTracker, 'liveedgechange', this.update);
+      }
+      this.off(this.player_, ['playing'], this.enableIntervalHandler_);
+      this.off(this.player_, ['ended', 'pause', 'waiting'], this.disableIntervalHandler_);
+
+      // we don't need to update the play progress if the document is hidden,
+      // also, this causes the CPU to spike and eventually crash the page on IE11.
+      if ('hidden' in document && 'visibilityState' in document) {
+        this.off(document, 'visibilitychange', this.toggleVisibility_);
+      }
+      super.dispose();
+    }
+  }
+
+  /**
+   * Default options for the `SeekBar`
+   *
+   * @type {Object}
+   * @private
+   */
+  SeekBar.prototype.options_ = {
+    children: ['loadProgressBar', 'playProgressBar'],
+    barName: 'playProgressBar'
+  };
+
+  // MouseTimeDisplay tooltips should not be added to a player on mobile devices
+  if (!IS_IOS && !IS_ANDROID) {
+    SeekBar.prototype.options_.children.splice(1, 0, 'mouseTimeDisplay');
+  }
+  Component$1.registerComponent('SeekBar', SeekBar);
+
+  /**
+   * @file progress-control.js
+   */
+
+  /**
+   * The Progress Control component contains the seek bar, load progress,
+   * and play progress.
+   *
+   * @extends Component
+   */
+  class ProgressControl extends Component$1 {
+    /**
+     * Creates an instance of this class.
+     *
+     * @param { import('../../player').default } player
+     *        The `Player` that this class should be attached to.
+     *
+     * @param {Object} [options]
+     *        The key/value store of player options.
+     */
+    constructor(player, options) {
+      super(player, options);
+      this.handleMouseMove = throttle(bind_(this, this.handleMouseMove), UPDATE_REFRESH_INTERVAL);
+      this.throttledHandleMouseSeek = throttle(bind_(this, this.handleMouseSeek), UPDATE_REFRESH_INTERVAL);
+      this.handleMouseUpHandler_ = e => this.handleMouseUp(e);
+      this.handleMouseDownHandler_ = e => this.handleMouseDown(e);
+      this.enable();
+    }
+
+    /**
+     * Create the `Component`'s DOM element
+     *
+     * @return {Element}
+     *         The element that was created.
+     */
+    createEl() {
+      return super.createEl('div', {
+        className: 'vjs-progress-control vjs-control'
+      });
+    }
+
+    /**
+     * When the mouse moves over the `ProgressControl`, the pointer position
+     * gets passed down to the `MouseTimeDisplay` component.
+     *
+     * @param {Event} event
+     *        The `mousemove` event that caused this function to run.
+     *
+     * @listen mousemove
+     */
+    handleMouseMove(event) {
+      const seekBar = this.getChild('seekBar');
+      if (!seekBar) {
+        return;
+      }
+      const playProgressBar = seekBar.getChild('playProgressBar');
+      const mouseTimeDisplay = seekBar.getChild('mouseTimeDisplay');
+      if (!playProgressBar && !mouseTimeDisplay) {
+        return;
+      }
+      const seekBarEl = seekBar.el();
+      const seekBarRect = findPosition(seekBarEl);
+      let seekBarPoint = getPointerPosition(seekBarEl, event).x;
+
+      // The default skin has a gap on either side of the `SeekBar`. This means
+      // that it's possible to trigger this behavior outside the boundaries of
+      // the `SeekBar`. This ensures we stay within it at all times.
+      seekBarPoint = clamp(seekBarPoint, 0, 1);
+      if (mouseTimeDisplay) {
+        mouseTimeDisplay.update(seekBarRect, seekBarPoint);
+      }
+      if (playProgressBar) {
+        playProgressBar.update(seekBarRect, seekBar.getProgress());
+      }
+    }
+
+    /**
+     * A throttled version of the {@link ProgressControl#handleMouseSeek} listener.
+     *
+     * @method ProgressControl#throttledHandleMouseSeek
+     * @param {Event} event
+     *        The `mousemove` event that caused this function to run.
+     *
+     * @listen mousemove
+     * @listen touchmove
+     */
+
+    /**
+     * Handle `mousemove` or `touchmove` events on the `ProgressControl`.
+     *
+     * @param {Event} event
+     *        `mousedown` or `touchstart` event that triggered this function
+     *
+     * @listens mousemove
+     * @listens touchmove
+     */
+    handleMouseSeek(event) {
+      const seekBar = this.getChild('seekBar');
+      if (seekBar) {
+        seekBar.handleMouseMove(event);
+      }
+    }
+
+    /**
+     * Are controls are currently enabled for this progress control.
+     *
+     * @return {boolean}
+     *         true if controls are enabled, false otherwise
+     */
+    enabled() {
+      return this.enabled_;
+    }
+
+    /**
+     * Disable all controls on the progress control and its children
+     */
+    disable() {
+      this.children().forEach(child => child.disable && child.disable());
+      if (!this.enabled()) {
+        return;
+      }
+      this.off(['mousedown', 'touchstart'], this.handleMouseDownHandler_);
+      this.off(this.el_, 'mousemove', this.handleMouseMove);
+      this.removeListenersAddedOnMousedownAndTouchstart();
+      this.addClass('disabled');
+      this.enabled_ = false;
+
+      // Restore normal playback state if controls are disabled while scrubbing
+      if (this.player_.scrubbing()) {
+        const seekBar = this.getChild('seekBar');
+        this.player_.scrubbing(false);
+        if (seekBar.videoWasPlaying) {
+          silencePromise(this.player_.play());
+        }
+      }
+    }
+
+    /**
+     * Enable all controls on the progress control and its children
+     */
+    enable() {
+      this.children().forEach(child => child.enable && child.enable());
+      if (this.enabled()) {
+        return;
+      }
+      this.on(['mousedown', 'touchstart'], this.handleMouseDownHandler_);
+      this.on(this.el_, 'mousemove', this.handleMouseMove);
+      this.removeClass('disabled');
+      this.enabled_ = true;
+    }
+
+    /**
+     * Cleanup listeners after the user finishes interacting with the progress controls
+     */
+    removeListenersAddedOnMousedownAndTouchstart() {
+      const doc = this.el_.ownerDocument;
+      this.off(doc, 'mousemove', this.throttledHandleMouseSeek);
+      this.off(doc, 'touchmove', this.throttledHandleMouseSeek);
+      this.off(doc, 'mouseup', this.handleMouseUpHandler_);
+      this.off(doc, 'touchend', this.handleMouseUpHandler_);
+    }
+
+    /**
+     * Handle `mousedown` or `touchstart` events on the `ProgressControl`.
+     *
+     * @param {Event} event
+     *        `mousedown` or `touchstart` event that triggered this function
+     *
+     * @listens mousedown
+     * @listens touchstart
+     */
+    handleMouseDown(event) {
+      const doc = this.el_.ownerDocument;
+      const seekBar = this.getChild('seekBar');
+      if (seekBar) {
+        seekBar.handleMouseDown(event);
+      }
+      this.on(doc, 'mousemove', this.throttledHandleMouseSeek);
+      this.on(doc, 'touchmove', this.throttledHandleMouseSeek);
+      this.on(doc, 'mouseup', this.handleMouseUpHandler_);
+      this.on(doc, 'touchend', this.handleMouseUpHandler_);
+    }
+
+    /**
+     * Handle `mouseup` or `touchend` events on the `ProgressControl`.
+     *
+     * @param {Event} event
+     *        `mouseup` or `touchend` event that triggered this function.
+     *
+     * @listens touchend
+     * @listens mouseup
+     */
+    handleMouseUp(event) {
+      const seekBar = this.getChild('seekBar');
+      if (seekBar) {
+        seekBar.handleMouseUp(event);
+      }
+      this.removeListenersAddedOnMousedownAndTouchstart();
+    }
+  }
+
+  /**
+   * Default options for `ProgressControl`
+   *
+   * @type {Object}
+   * @private
+   */
+  ProgressControl.prototype.options_ = {
+    children: ['seekBar']
+  };
+  Component$1.registerComponent('ProgressControl', ProgressControl);
+
+  /**
+   * @file picture-in-picture-toggle.js
+   */
+
+  /**
+   * Toggle Picture-in-Picture mode
+   *
+   * @extends Button
+   */
+  class PictureInPictureToggle extends Button {
+    /**
+     * Creates an instance of this class.
+     *
+     * @param { import('./player').default } player
+     *        The `Player` that this class should be attached to.
+     *
+     * @param {Object} [options]
+     *        The key/value store of player options.
+     *
+     * @listens Player#enterpictureinpicture
+     * @listens Player#leavepictureinpicture
+     */
+    constructor(player, options) {
+      super(player, options);
+      this.setIcon('picture-in-picture-enter');
+      this.on(player, ['enterpictureinpicture', 'leavepictureinpicture'], e => this.handlePictureInPictureChange(e));
+      this.on(player, ['disablepictureinpicturechanged', 'loadedmetadata'], e => this.handlePictureInPictureEnabledChange(e));
+      this.on(player, ['loadedmetadata', 'audioonlymodechange', 'audiopostermodechange'], () => this.handlePictureInPictureAudioModeChange());
+
+      // TODO: Deactivate button on player emptied event.
+      this.disable();
+    }
+
+    /**
+     * Builds the default DOM `className`.
+     *
+     * @return {string}
+     *         The DOM `className` for this object.
+     */
+    buildCSSClass() {
+      return `vjs-picture-in-picture-control vjs-hidden ${super.buildCSSClass()}`;
+    }
+
+    /**
+     * Displays or hides the button depending on the audio mode detection.
+     * Exits picture-in-picture if it is enabled when switching to audio mode.
+     */
+    handlePictureInPictureAudioModeChange() {
+      // This audio detection will not detect HLS or DASH audio-only streams because there was no reliable way to detect them at the time
+      const isSourceAudio = this.player_.currentType().substring(0, 5) === 'audio';
+      const isAudioMode = isSourceAudio || this.player_.audioPosterMode() || this.player_.audioOnlyMode();
+      if (!isAudioMode) {
+        this.show();
+        return;
+      }
+      if (this.player_.isInPictureInPicture()) {
+        this.player_.exitPictureInPicture();
+      }
+      this.hide();
+    }
+
+    /**
+     * Enables or disables button based on availability of a Picture-In-Picture mode.
+     *
+     * Enabled if
+     * - `player.options().enableDocumentPictureInPicture` is true and
+     *   window.documentPictureInPicture is available; or
+     * - `player.disablePictureInPicture()` is false and
+     *   element.requestPictureInPicture is available
+     */
+    handlePictureInPictureEnabledChange() {
+      if (document.pictureInPictureEnabled && this.player_.disablePictureInPicture() === false || this.player_.options_.enableDocumentPictureInPicture && 'documentPictureInPicture' in window) {
+        this.enable();
+      } else {
+        this.disable();
+      }
+    }
+
+    /**
+     * Handles enterpictureinpicture and leavepictureinpicture on the player and change control text accordingly.
+     *
+     * @param {Event} [event]
+     *        The {@link Player#enterpictureinpicture} or {@link Player#leavepictureinpicture} event that caused this function to be
+     *        called.
+     *
+     * @listens Player#enterpictureinpicture
+     * @listens Player#leavepictureinpicture
+     */
+    handlePictureInPictureChange(event) {
+      if (this.player_.isInPictureInPicture()) {
+        this.setIcon('picture-in-picture-exit');
+        this.controlText('Exit Picture-in-Picture');
+      } else {
+        this.setIcon('picture-in-picture-enter');
+        this.controlText('Picture-in-Picture');
+      }
+      this.handlePictureInPictureEnabledChange();
+    }
+
+    /**
+     * This gets called when an `PictureInPictureToggle` is "clicked". See
+     * {@link ClickableComponent} for more detailed information on what a click can be.
+     *
+     * @param {Event} [event]
+     *        The `keydown`, `tap`, or `click` event that caused this function to be
+     *        called.
+     *
+     * @listens tap
+     * @listens click
+     */
+    handleClick(event) {
+      if (!this.player_.isInPictureInPicture()) {
+        this.player_.requestPictureInPicture();
+      } else {
+        this.player_.exitPictureInPicture();
+      }
+    }
+
+    /**
+     * Show the `Component`s element if it is hidden by removing the
+     * 'vjs-hidden' class name from it only in browsers that support the Picture-in-Picture API.
+     */
+    show() {
+      // Does not allow to display the pictureInPictureToggle in browsers that do not support the Picture-in-Picture API, e.g. Firefox.
+      if (typeof document.exitPictureInPicture !== 'function') {
+        return;
+      }
+      super.show();
+    }
+  }
+
+  /**
+   * The text that should display over the `PictureInPictureToggle`s controls. Added for localization.
+   *
+   * @type {string}
+   * @protected
+   */
+  PictureInPictureToggle.prototype.controlText_ = 'Picture-in-Picture';
+  Component$1.registerComponent('PictureInPictureToggle', PictureInPictureToggle);
+
+  /**
+   * @file fullscreen-toggle.js
+   */
+
+  /**
+   * Toggle fullscreen video
+   *
+   * @extends Button
+   */
+  class FullscreenToggle extends Button {
+    /**
+     * Creates an instance of this class.
+     *
+     * @param { import('./player').default } player
+     *        The `Player` that this class should be attached to.
+     *
+     * @param {Object} [options]
+     *        The key/value store of player options.
+     */
+    constructor(player, options) {
+      super(player, options);
+      this.setIcon('fullscreen-enter');
+      this.on(player, 'fullscreenchange', e => this.handleFullscreenChange(e));
+      if (document[player.fsApi_.fullscreenEnabled] === false) {
+        this.disable();
+      }
+    }
+
+    /**
+     * Builds the default DOM `className`.
+     *
+     * @return {string}
+     *         The DOM `className` for this object.
+     */
+    buildCSSClass() {
+      return `vjs-fullscreen-control ${super.buildCSSClass()}`;
+    }
+
+    /**
+     * Handles fullscreenchange on the player and change control text accordingly.
+     *
+     * @param {Event} [event]
+     *        The {@link Player#fullscreenchange} event that caused this function to be
+     *        called.
+     *
+     * @listens Player#fullscreenchange
+     */
+    handleFullscreenChange(event) {
+      if (this.player_.isFullscreen()) {
+        this.controlText('Exit Fullscreen');
+        this.setIcon('fullscreen-exit');
+      } else {
+        this.controlText('Fullscreen');
+        this.setIcon('fullscreen-enter');
+      }
+    }
+
+    /**
+     * This gets called when an `FullscreenToggle` is "clicked". See
+     * {@link ClickableComponent} for more detailed information on what a click can be.
+     *
+     * @param {Event} [event]
+     *        The `keydown`, `tap`, or `click` event that caused this function to be
+     *        called.
+     *
+     * @listens tap
+     * @listens click
+     */
+    handleClick(event) {
+      if (!this.player_.isFullscreen()) {
+        this.player_.requestFullscreen();
+      } else {
+        this.player_.exitFullscreen();
+      }
+    }
+  }
+
+  /**
+   * The text that should display over the `FullscreenToggle`s controls. Added for localization.
+   *
+   * @type {string}
+   * @protected
+   */
+  FullscreenToggle.prototype.controlText_ = 'Fullscreen';
+  Component$1.registerComponent('FullscreenToggle', FullscreenToggle);
+
+  /**
+   * Check if volume control is supported and if it isn't hide the
+   * `Component` that was passed  using the `vjs-hidden` class.
+   *
+   * @param { import('../../component').default } self
+   *        The component that should be hidden if volume is unsupported
+   *
+   * @param { import('../../player').default } player
+   *        A reference to the player
+   *
+   * @private
+   */
+  const checkVolumeSupport = function (self, player) {
+    // hide volume controls when they're not supported by the current tech
+    if (player.tech_ && !player.tech_.featuresVolumeControl) {
+      self.addClass('vjs-hidden');
+    }
+    self.on(player, 'loadstart', function () {
+      if (!player.tech_.featuresVolumeControl) {
+        self.addClass('vjs-hidden');
+      } else {
+        self.removeClass('vjs-hidden');
+      }
+    });
+  };
+
+  /**
+   * @file volume-level.js
+   */
+
+  /**
+   * Shows volume level
+   *
+   * @extends Component
+   */
+  class VolumeLevel extends Component$1 {
+    /**
+     * Create the `Component`'s DOM element
+     *
+     * @return {Element}
+     *         The element that was created.
+     */
+    createEl() {
+      const el = super.createEl('div', {
+        className: 'vjs-volume-level'
+      });
+      this.setIcon('circle', el);
+      el.appendChild(super.createEl('span', {
+        className: 'vjs-control-text'
+      }));
+      return el;
+    }
+  }
+  Component$1.registerComponent('VolumeLevel', VolumeLevel);
+
+  /**
+   * @file volume-level-tooltip.js
+   */
+
+  /**
+   * Volume level tooltips display a volume above or side by side the volume bar.
+   *
+   * @extends Component
+   */
+  class VolumeLevelTooltip extends Component$1 {
+    /**
+     * Creates an instance of this class.
+     *
+     * @param { import('../../player').default } player
+     *        The {@link Player} that this class should be attached to.
+     *
+     * @param {Object} [options]
+     *        The key/value store of player options.
+     */
+    constructor(player, options) {
+      super(player, options);
+      this.update = throttle(bind_(this, this.update), UPDATE_REFRESH_INTERVAL);
+    }
+
+    /**
+     * Create the volume tooltip DOM element
+     *
+     * @return {Element}
+     *         The element that was created.
+     */
+    createEl() {
+      return super.createEl('div', {
+        className: 'vjs-volume-tooltip'
+      }, {
+        'aria-hidden': 'true'
+      });
+    }
+
+    /**
+     * Updates the position of the tooltip relative to the `VolumeBar` and
+     * its content text.
+     *
+     * @param {Object} rangeBarRect
+     *        The `ClientRect` for the {@link VolumeBar} element.
+     *
+     * @param {number} rangeBarPoint
+     *        A number from 0 to 1, representing a horizontal/vertical reference point
+     *        from the left edge of the {@link VolumeBar}
+     *
+     * @param {boolean} vertical
+     *        Referees to the Volume control position
+     *        in the control bar{@link VolumeControl}
+     *
+     */
+    update(rangeBarRect, rangeBarPoint, vertical, content) {
+      if (!vertical) {
+        const tooltipRect = getBoundingClientRect(this.el_);
+        const playerRect = getBoundingClientRect(this.player_.el());
+        const volumeBarPointPx = rangeBarRect.width * rangeBarPoint;
+        if (!playerRect || !tooltipRect) {
+          return;
+        }
+        const spaceLeftOfPoint = rangeBarRect.left - playerRect.left + volumeBarPointPx;
+        const spaceRightOfPoint = rangeBarRect.width - volumeBarPointPx + (playerRect.right - rangeBarRect.right);
+        let pullTooltipBy = tooltipRect.width / 2;
+        if (spaceLeftOfPoint < pullTooltipBy) {
+          pullTooltipBy += pullTooltipBy - spaceLeftOfPoint;
+        } else if (spaceRightOfPoint < pullTooltipBy) {
+          pullTooltipBy = spaceRightOfPoint;
+        }
+        if (pullTooltipBy < 0) {
+          pullTooltipBy = 0;
+        } else if (pullTooltipBy > tooltipRect.width) {
+          pullTooltipBy = tooltipRect.width;
+        }
+        this.el_.style.right = `-${pullTooltipBy}px`;
+      }
+      this.write(`${content}%`);
+    }
+
+    /**
+     * Write the volume to the tooltip DOM element.
+     *
+     * @param {string} content
+     *        The formatted volume for the tooltip.
+     */
+    write(content) {
+      textContent(this.el_, content);
+    }
+
+    /**
+     * Updates the position of the volume tooltip relative to the `VolumeBar`.
+     *
+     * @param {Object} rangeBarRect
+     *        The `ClientRect` for the {@link VolumeBar} element.
+     *
+     * @param {number} rangeBarPoint
+     *        A number from 0 to 1, representing a horizontal/vertical reference point
+     *        from the left edge of the {@link VolumeBar}
+     *
+     * @param {boolean} vertical
+     *        Referees to the Volume control position
+     *        in the control bar{@link VolumeControl}
+     *
+     * @param {number} volume
+     *        The volume level to update the tooltip to
+     *
+     * @param {Function} cb
+     *        A function that will be called during the request animation frame
+     *        for tooltips that need to do additional animations from the default
+     */
+    updateVolume(rangeBarRect, rangeBarPoint, vertical, volume, cb) {
+      this.requestNamedAnimationFrame('VolumeLevelTooltip#updateVolume', () => {
+        this.update(rangeBarRect, rangeBarPoint, vertical, volume.toFixed(0));
+        if (cb) {
+          cb();
+        }
+      });
+    }
+  }
+  Component$1.registerComponent('VolumeLevelTooltip', VolumeLevelTooltip);
+
+  /**
+   * @file mouse-volume-level-display.js
+   */
+
+  /**
+   * The {@link MouseVolumeLevelDisplay} component tracks mouse movement over the
+   * {@link VolumeControl}. It displays an indicator and a {@link VolumeLevelTooltip}
+   * indicating the volume level which is represented by a given point in the
+   * {@link VolumeBar}.
+   *
+   * @extends Component
+   */
+  class MouseVolumeLevelDisplay extends Component$1 {
+    /**
+     * Creates an instance of this class.
+     *
+     * @param { import('../../player').default } player
+     *        The {@link Player} that this class should be attached to.
+     *
+     * @param {Object} [options]
+     *        The key/value store of player options.
+     */
+    constructor(player, options) {
+      super(player, options);
+      this.update = throttle(bind_(this, this.update), UPDATE_REFRESH_INTERVAL);
+    }
+
+    /**
+     * Create the DOM element for this class.
+     *
+     * @return {Element}
+     *         The element that was created.
+     */
+    createEl() {
+      return super.createEl('div', {
+        className: 'vjs-mouse-display'
+      });
+    }
+
+    /**
+     * Enquires updates to its own DOM as well as the DOM of its
+     * {@link VolumeLevelTooltip} child.
+     *
+     * @param {Object} rangeBarRect
+     *        The `ClientRect` for the {@link VolumeBar} element.
+     *
+     * @param {number} rangeBarPoint
+     *        A number from 0 to 1, representing a horizontal/vertical reference point
+     *        from the left edge of the {@link VolumeBar}
+     *
+     * @param {boolean} vertical
+     *        Referees to the Volume control position
+     *        in the control bar{@link VolumeControl}
+     *
+     */
+    update(rangeBarRect, rangeBarPoint, vertical) {
+      const volume = 100 * rangeBarPoint;
+      this.getChild('volumeLevelTooltip').updateVolume(rangeBarRect, rangeBarPoint, vertical, volume, () => {
+        if (vertical) {
+          this.el_.style.bottom = `${rangeBarRect.height * rangeBarPoint}px`;
+        } else {
+          this.el_.style.left = `${rangeBarRect.width * rangeBarPoint}px`;
+        }
+      });
+    }
+  }
+
+  /**
+   * Default options for `MouseVolumeLevelDisplay`
+   *
+   * @type {Object}
+   * @private
+   */
+  MouseVolumeLevelDisplay.prototype.options_ = {
+    children: ['volumeLevelTooltip']
+  };
+  Component$1.registerComponent('MouseVolumeLevelDisplay', MouseVolumeLevelDisplay);
+
+  /**
+   * @file volume-bar.js
+   */
+
+  /**
+   * The bar that contains the volume level and can be clicked on to adjust the level
+   *
+   * @extends Slider
+   */
+  class VolumeBar extends Slider {
+    /**
+     * Creates an instance of this class.
+     *
+     * @param { import('../../player').default } player
+     *        The `Player` that this class should be attached to.
+     *
+     * @param {Object} [options]
+     *        The key/value store of player options.
+     */
+    constructor(player, options) {
+      super(player, options);
+      this.on('slideractive', e => this.updateLastVolume_(e));
+      this.on(player, 'volumechange', e => this.updateARIAAttributes(e));
+      player.ready(() => this.updateARIAAttributes());
+    }
+
+    /**
+     * Create the `Component`'s DOM element
+     *
+     * @return {Element}
+     *         The element that was created.
+     */
+    createEl() {
+      return super.createEl('div', {
+        className: 'vjs-volume-bar vjs-slider-bar'
+      }, {
+        'aria-label': this.localize('Volume Level'),
+        'aria-live': 'polite'
+      });
+    }
+
+    /**
+     * Handle mouse down on volume bar
+     *
+     * @param {Event} event
+     *        The `mousedown` event that caused this to run.
+     *
+     * @listens mousedown
+     */
+    handleMouseDown(event) {
+      if (!isSingleLeftClick(event)) {
+        return;
+      }
+      super.handleMouseDown(event);
+    }
+
+    /**
+     * Handle movement events on the {@link VolumeMenuButton}.
+     *
+     * @param {Event} event
+     *        The event that caused this function to run.
+     *
+     * @listens mousemove
+     */
+    handleMouseMove(event) {
+      const mouseVolumeLevelDisplay = this.getChild('mouseVolumeLevelDisplay');
+      if (mouseVolumeLevelDisplay) {
+        const volumeBarEl = this.el();
+        const volumeBarRect = getBoundingClientRect(volumeBarEl);
+        const vertical = this.vertical();
+        let volumeBarPoint = getPointerPosition(volumeBarEl, event);
+        volumeBarPoint = vertical ? volumeBarPoint.y : volumeBarPoint.x;
+        // The default skin has a gap on either side of the `VolumeBar`. This means
+        // that it's possible to trigger this behavior outside the boundaries of
+        // the `VolumeBar`. This ensures we stay within it at all times.
+        volumeBarPoint = clamp(volumeBarPoint, 0, 1);
+        mouseVolumeLevelDisplay.update(volumeBarRect, volumeBarPoint, vertical);
+      }
+      if (!isSingleLeftClick(event)) {
+        return;
+      }
+      this.checkMuted();
+      this.player_.volume(this.calculateDistance(event));
+    }
+
+    /**
+     * If the player is muted unmute it.
+     */
+    checkMuted() {
+      if (this.player_.muted()) {
+        this.player_.muted(false);
+      }
+    }
+
+    /**
+     * Get percent of volume level
+     *
+     * @return {number}
+     *         Volume level percent as a decimal number.
+     */
+    getPercent() {
+      if (this.player_.muted()) {
+        return 0;
+      }
+      return this.player_.volume();
+    }
+
+    /**
+     * Increase volume level for keyboard users
+     */
+    stepForward() {
+      this.checkMuted();
+      this.player_.volume(this.player_.volume() + 0.1);
+    }
+
+    /**
+     * Decrease volume level for keyboard users
+     */
+    stepBack() {
+      this.checkMuted();
+      this.player_.volume(this.player_.volume() - 0.1);
+    }
+
+    /**
+     * Update ARIA accessibility attributes
+     *
+     * @param {Event} [event]
+     *        The `volumechange` event that caused this function to run.
+     *
+     * @listens Player#volumechange
+     */
+    updateARIAAttributes(event) {
+      const ariaValue = this.player_.muted() ? 0 : this.volumeAsPercentage_();
+      this.el_.setAttribute('aria-valuenow', ariaValue);
+      this.el_.setAttribute('aria-valuetext', ariaValue + '%');
+    }
+
+    /**
+     * Returns the current value of the player volume as a percentage
+     *
+     * @private
+     */
+    volumeAsPercentage_() {
+      return Math.round(this.player_.volume() * 100);
+    }
+
+    /**
+     * When user starts dragging the VolumeBar, store the volume and listen for
+     * the end of the drag. When the drag ends, if the volume was set to zero,
+     * set lastVolume to the stored volume.
+     *
+     * @listens slideractive
+     * @private
+     */
+    updateLastVolume_() {
+      const volumeBeforeDrag = this.player_.volume();
+      this.one('sliderinactive', () => {
+        if (this.player_.volume() === 0) {
+          this.player_.lastVolume_(volumeBeforeDrag);
+        }
+      });
+    }
+  }
+
+  /**
+   * Default options for the `VolumeBar`
+   *
+   * @type {Object}
+   * @private
+   */
+  VolumeBar.prototype.options_ = {
+    children: ['volumeLevel'],
+    barName: 'volumeLevel'
+  };
+
+  // MouseVolumeLevelDisplay tooltip should not be added to a player on mobile devices
+  if (!IS_IOS && !IS_ANDROID) {
+    VolumeBar.prototype.options_.children.splice(0, 0, 'mouseVolumeLevelDisplay');
+  }
+
+  /**
+   * Call the update event for this Slider when this event happens on the player.
+   *
+   * @type {string}
+   */
+  VolumeBar.prototype.playerEvent = 'volumechange';
+  Component$1.registerComponent('VolumeBar', VolumeBar);
+
+  /**
+   * @file volume-control.js
+   */
+
+  /**
+   * The component for controlling the volume level
+   *
+   * @extends Component
+   */
+  class VolumeControl extends Component$1 {
+    /**
+     * Creates an instance of this class.
+     *
+     * @param { import('../../player').default } player
+     *        The `Player` that this class should be attached to.
+     *
+     * @param {Object} [options={}]
+     *        The key/value store of player options.
+     */
+    constructor(player, options = {}) {
+      options.vertical = options.vertical || false;
+
+      // Pass the vertical option down to the VolumeBar if
+      // the VolumeBar is turned on.
+      if (typeof options.volumeBar === 'undefined' || isPlain(options.volumeBar)) {
+        options.volumeBar = options.volumeBar || {};
+        options.volumeBar.vertical = options.vertical;
+      }
+      super(player, options);
+
+      // hide this control if volume support is missing
+      checkVolumeSupport(this, player);
+      this.throttledHandleMouseMove = throttle(bind_(this, this.handleMouseMove), UPDATE_REFRESH_INTERVAL);
+      this.handleMouseUpHandler_ = e => this.handleMouseUp(e);
+      this.on('mousedown', e => this.handleMouseDown(e));
+      this.on('touchstart', e => this.handleMouseDown(e));
+      this.on('mousemove', e => this.handleMouseMove(e));
+
+      // while the slider is active (the mouse has been pressed down and
+      // is dragging) or in focus we do not want to hide the VolumeBar
+      this.on(this.volumeBar, ['focus', 'slideractive'], () => {
+        this.volumeBar.addClass('vjs-slider-active');
+        this.addClass('vjs-slider-active');
+        this.trigger('slideractive');
+      });
+      this.on(this.volumeBar, ['blur', 'sliderinactive'], () => {
+        this.volumeBar.removeClass('vjs-slider-active');
+        this.removeClass('vjs-slider-active');
+        this.trigger('sliderinactive');
+      });
+    }
+
+    /**
+     * Create the `Component`'s DOM element
+     *
+     * @return {Element}
+     *         The element that was created.
+     */
+    createEl() {
+      let orientationClass = 'vjs-volume-horizontal';
+      if (this.options_.vertical) {
+        orientationClass = 'vjs-volume-vertical';
+      }
+      return super.createEl('div', {
+        className: `vjs-volume-control vjs-control ${orientationClass}`
+      });
+    }
+
+    /**
+     * Handle `mousedown` or `touchstart` events on the `VolumeControl`.
+     *
+     * @param {Event} event
+     *        `mousedown` or `touchstart` event that triggered this function
+     *
+     * @listens mousedown
+     * @listens touchstart
+     */
+    handleMouseDown(event) {
+      const doc = this.el_.ownerDocument;
+      this.on(doc, 'mousemove', this.throttledHandleMouseMove);
+      this.on(doc, 'touchmove', this.throttledHandleMouseMove);
+      this.on(doc, 'mouseup', this.handleMouseUpHandler_);
+      this.on(doc, 'touchend', this.handleMouseUpHandler_);
+    }
+
+    /**
+     * Handle `mouseup` or `touchend` events on the `VolumeControl`.
+     *
+     * @param {Event} event
+     *        `mouseup` or `touchend` event that triggered this function.
+     *
+     * @listens touchend
+     * @listens mouseup
+     */
+    handleMouseUp(event) {
+      const doc = this.el_.ownerDocument;
+      this.off(doc, 'mousemove', this.throttledHandleMouseMove);
+      this.off(doc, 'touchmove', this.throttledHandleMouseMove);
+      this.off(doc, 'mouseup', this.handleMouseUpHandler_);
+      this.off(doc, 'touchend', this.handleMouseUpHandler_);
+    }
+
+    /**
+     * Handle `mousedown` or `touchstart` events on the `VolumeControl`.
+     *
+     * @param {Event} event
+     *        `mousedown` or `touchstart` event that triggered this function
+     *
+     * @listens mousedown
+     * @listens touchstart
+     */
+    handleMouseMove(event) {
+      this.volumeBar.handleMouseMove(event);
+    }
+  }
+
+  /**
+   * Default options for the `VolumeControl`
+   *
+   * @type {Object}
+   * @private
+   */
+  VolumeControl.prototype.options_ = {
+    children: ['volumeBar']
+  };
+  Component$1.registerComponent('VolumeControl', VolumeControl);
+
+  /**
+   * Check if muting volume is supported and if it isn't hide the mute toggle
+   * button.
+   *
+   * @param { import('../../component').default } self
+   *        A reference to the mute toggle button
+   *
+   * @param { import('../../player').default } player
+   *        A reference to the player
+   *
+   * @private
+   */
+  const checkMuteSupport = function (self, player) {
+    // hide mute toggle button if it's not supported by the current tech
+    if (player.tech_ && !player.tech_.featuresMuteControl) {
+      self.addClass('vjs-hidden');
+    }
+    self.on(player, 'loadstart', function () {
+      if (!player.tech_.featuresMuteControl) {
+        self.addClass('vjs-hidden');
+      } else {
+        self.removeClass('vjs-hidden');
+      }
+    });
+  };
+
+  /**
+   * @file mute-toggle.js
+   */
+
+  /**
+   * A button component for muting the audio.
+   *
+   * @extends Button
+   */
+  class MuteToggle extends Button {
+    /**
+     * Creates an instance of this class.
+     *
+     * @param { import('./player').default } player
+     *        The `Player` that this class should be attached to.
+     *
+     * @param {Object} [options]
+     *        The key/value store of player options.
+     */
+    constructor(player, options) {
+      super(player, options);
+
+      // hide this control if volume support is missing
+      checkMuteSupport(this, player);
+      this.on(player, ['loadstart', 'volumechange'], e => this.update(e));
+    }
+
+    /**
+     * Builds the default DOM `className`.
+     *
+     * @return {string}
+     *         The DOM `className` for this object.
+     */
+    buildCSSClass() {
+      return `vjs-mute-control ${super.buildCSSClass()}`;
+    }
+
+    /**
+     * This gets called when an `MuteToggle` is "clicked". See
+     * {@link ClickableComponent} for more detailed information on what a click can be.
+     *
+     * @param {Event} [event]
+     *        The `keydown`, `tap`, or `click` event that caused this function to be
+     *        called.
+     *
+     * @listens tap
+     * @listens click
+     */
+    handleClick(event) {
+      const vol = this.player_.volume();
+      const lastVolume = this.player_.lastVolume_();
+      if (vol === 0) {
+        const volumeToSet = lastVolume < 0.1 ? 0.1 : lastVolume;
+        this.player_.volume(volumeToSet);
+        this.player_.muted(false);
+      } else {
+        this.player_.muted(this.player_.muted() ? false : true);
+      }
+    }
+
+    /**
+     * Update the `MuteToggle` button based on the state of `volume` and `muted`
+     * on the player.
+     *
+     * @param {Event} [event]
+     *        The {@link Player#loadstart} event if this function was called
+     *        through an event.
+     *
+     * @listens Player#loadstart
+     * @listens Player#volumechange
+     */
+    update(event) {
+      this.updateIcon_();
+      this.updateControlText_();
+    }
+
+    /**
+     * Update the appearance of the `MuteToggle` icon.
+     *
+     * Possible states (given `level` variable below):
+     * - 0: crossed out
+     * - 1: zero bars of volume
+     * - 2: one bar of volume
+     * - 3: two bars of volume
+     *
+     * @private
+     */
+    updateIcon_() {
+      const vol = this.player_.volume();
+      let level = 3;
+      this.setIcon('volume-high');
+
+      // in iOS when a player is loaded with muted attribute
+      // and volume is changed with a native mute button
+      // we want to make sure muted state is updated
+      if (IS_IOS && this.player_.tech_ && this.player_.tech_.el_) {
+        this.player_.muted(this.player_.tech_.el_.muted);
+      }
+      if (vol === 0 || this.player_.muted()) {
+        this.setIcon('volume-mute');
+        level = 0;
+      } else if (vol < 0.33) {
+        this.setIcon('volume-low');
+        level = 1;
+      } else if (vol < 0.67) {
+        this.setIcon('volume-medium');
+        level = 2;
+      }
+      removeClass(this.el_, [0, 1, 2, 3].reduce((str, i) => str + `${i ? ' ' : ''}vjs-vol-${i}`, ''));
+      addClass(this.el_, `vjs-vol-${level}`);
+    }
+
+    /**
+     * If `muted` has changed on the player, update the control text
+     * (`title` attribute on `vjs-mute-control` element and content of
+     * `vjs-control-text` element).
+     *
+     * @private
+     */
+    updateControlText_() {
+      const soundOff = this.player_.muted() || this.player_.volume() === 0;
+      const text = soundOff ? 'Unmute' : 'Mute';
+      if (this.controlText() !== text) {
+        this.controlText(text);
+      }
+    }
+  }
+
+  /**
+   * The text that should display over the `MuteToggle`s controls. Added for localization.
+   *
+   * @type {string}
+   * @protected
+   */
+  MuteToggle.prototype.controlText_ = 'Mute';
+  Component$1.registerComponent('MuteToggle', MuteToggle);
+
+  /**
+   * @file volume-control.js
+   */
+
+  /**
+   * A Component to contain the MuteToggle and VolumeControl so that
+   * they can work together.
+   *
+   * @extends Component
+   */
+  class VolumePanel extends Component$1 {
+    /**
+     * Creates an instance of this class.
+     *
+     * @param { import('./player').default } player
+     *        The `Player` that this class should be attached to.
+     *
+     * @param {Object} [options={}]
+     *        The key/value store of player options.
+     */
+    constructor(player, options = {}) {
+      if (typeof options.inline !== 'undefined') {
+        options.inline = options.inline;
+      } else {
+        options.inline = true;
+      }
+
+      // pass the inline option down to the VolumeControl as vertical if
+      // the VolumeControl is on.
+      if (typeof options.volumeControl === 'undefined' || isPlain(options.volumeControl)) {
+        options.volumeControl = options.volumeControl || {};
+        options.volumeControl.vertical = !options.inline;
+      }
+      super(player, options);
+
+      // this handler is used by mouse handler methods below
+      this.handleKeyPressHandler_ = e => this.handleKeyPress(e);
+      this.on(player, ['loadstart'], e => this.volumePanelState_(e));
+      this.on(this.muteToggle, 'keyup', e => this.handleKeyPress(e));
+      this.on(this.volumeControl, 'keyup', e => this.handleVolumeControlKeyUp(e));
+      this.on('keydown', e => this.handleKeyPress(e));
+      this.on('mouseover', e => this.handleMouseOver(e));
+      this.on('mouseout', e => this.handleMouseOut(e));
+
+      // while the slider is active (the mouse has been pressed down and
+      // is dragging) we do not want to hide the VolumeBar
+      this.on(this.volumeControl, ['slideractive'], this.sliderActive_);
+      this.on(this.volumeControl, ['sliderinactive'], this.sliderInactive_);
+    }
+
+    /**
+     * Add vjs-slider-active class to the VolumePanel
+     *
+     * @listens VolumeControl#slideractive
+     * @private
+     */
+    sliderActive_() {
+      this.addClass('vjs-slider-active');
+    }
+
+    /**
+     * Removes vjs-slider-active class to the VolumePanel
+     *
+     * @listens VolumeControl#sliderinactive
+     * @private
+     */
+    sliderInactive_() {
+      this.removeClass('vjs-slider-active');
+    }
+
+    /**
+     * Adds vjs-hidden or vjs-mute-toggle-only to the VolumePanel
+     * depending on MuteToggle and VolumeControl state
+     *
+     * @listens Player#loadstart
+     * @private
+     */
+    volumePanelState_() {
+      // hide volume panel if neither volume control or mute toggle
+      // are displayed
+      if (this.volumeControl.hasClass('vjs-hidden') && this.muteToggle.hasClass('vjs-hidden')) {
+        this.addClass('vjs-hidden');
+      }
+
+      // if only mute toggle is visible we don't want
+      // volume panel expanding when hovered or active
+      if (this.volumeControl.hasClass('vjs-hidden') && !this.muteToggle.hasClass('vjs-hidden')) {
+        this.addClass('vjs-mute-toggle-only');
+      }
+    }
+
+    /**
+     * Create the `Component`'s DOM element
+     *
+     * @return {Element}
+     *         The element that was created.
+     */
+    createEl() {
+      let orientationClass = 'vjs-volume-panel-horizontal';
+      if (!this.options_.inline) {
+        orientationClass = 'vjs-volume-panel-vertical';
+      }
+      return super.createEl('div', {
+        className: `vjs-volume-panel vjs-control ${orientationClass}`
+      });
+    }
+
+    /**
+     * Dispose of the `volume-panel` and all child components.
+     */
+    dispose() {
+      this.handleMouseOut();
+      super.dispose();
+    }
+
+    /**
+     * Handles `keyup` events on the `VolumeControl`, looking for ESC, which closes
+     * the volume panel and sets focus on `MuteToggle`.
+     *
+     * @param {Event} event
+     *        The `keyup` event that caused this function to be called.
+     *
+     * @listens keyup
+     */
+    handleVolumeControlKeyUp(event) {
+      if (keycode.isEventKey(event, 'Esc')) {
+        this.muteToggle.focus();
+      }
+    }
+
+    /**
+     * This gets called when a `VolumePanel` gains hover via a `mouseover` event.
+     * Turns on listening for `mouseover` event. When they happen it
+     * calls `this.handleMouseOver`.
+     *
+     * @param {Event} event
+     *        The `mouseover` event that caused this function to be called.
+     *
+     * @listens mouseover
+     */
+    handleMouseOver(event) {
+      this.addClass('vjs-hover');
+      on(document, 'keyup', this.handleKeyPressHandler_);
+    }
+
+    /**
+     * This gets called when a `VolumePanel` gains hover via a `mouseout` event.
+     * Turns on listening for `mouseout` event. When they happen it
+     * calls `this.handleMouseOut`.
+     *
+     * @param {Event} event
+     *        The `mouseout` event that caused this function to be called.
+     *
+     * @listens mouseout
+     */
+    handleMouseOut(event) {
+      this.removeClass('vjs-hover');
+      off(document, 'keyup', this.handleKeyPressHandler_);
+    }
+
+    /**
+     * Handles `keyup` event on the document or `keydown` event on the `VolumePanel`,
+     * looking for ESC, which hides the `VolumeControl`.
+     *
+     * @param {Event} event
+     *        The keypress that triggered this event.
+     *
+     * @listens keydown | keyup
+     */
+    handleKeyPress(event) {
+      if (keycode.isEventKey(event, 'Esc')) {
+        this.handleMouseOut();
+      }
+    }
+  }
+
+  /**
+   * Default options for the `VolumeControl`
+   *
+   * @type {Object}
+   * @private
+   */
+  VolumePanel.prototype.options_ = {
+    children: ['muteToggle', 'volumeControl']
+  };
+  Component$1.registerComponent('VolumePanel', VolumePanel);
+
+  /**
+   * Button to skip forward a configurable amount of time
+   * through a video. Renders in the control bar.
+   *
+   * e.g. options: {controlBar: {skipButtons: forward: 5}}
+   *
+   * @extends Button
+   */
+  class SkipForward extends Button {
+    constructor(player, options) {
+      super(player, options);
+      this.validOptions = [5, 10, 30];
+      this.skipTime = this.getSkipForwardTime();
+      if (this.skipTime && this.validOptions.includes(this.skipTime)) {
+        this.setIcon(`forward-${this.skipTime}`);
+        this.controlText(this.localize('Skip forward {1} seconds', [this.skipTime.toLocaleString(player.language())]));
+        this.show();
+      } else {
+        this.hide();
+      }
+    }
+    getSkipForwardTime() {
+      const playerOptions = this.options_.playerOptions;
+      return playerOptions.controlBar && playerOptions.controlBar.skipButtons && playerOptions.controlBar.skipButtons.forward;
+    }
+    buildCSSClass() {
+      return `vjs-skip-forward-${this.getSkipForwardTime()} ${super.buildCSSClass()}`;
+    }
+
+    /**
+     * On click, skips forward in the duration/seekable range by a configurable amount of seconds.
+     * If the time left in the duration/seekable range is less than the configured 'skip forward' time,
+     * skips to end of duration/seekable range.
+     *
+     * Handle a click on a `SkipForward` button
+     *
+     * @param {EventTarget~Event} event
+     *        The `click` event that caused this function
+     *        to be called
+     */
+    handleClick(event) {
+      if (isNaN(this.player_.duration())) {
+        return;
+      }
+      const currentVideoTime = this.player_.currentTime();
+      const liveTracker = this.player_.liveTracker;
+      const duration = liveTracker && liveTracker.isLive() ? liveTracker.seekableEnd() : this.player_.duration();
+      let newTime;
+      if (currentVideoTime + this.skipTime <= duration) {
+        newTime = currentVideoTime + this.skipTime;
+      } else {
+        newTime = duration;
+      }
+      this.player_.currentTime(newTime);
+    }
+
+    /**
+     * Update control text on languagechange
+     */
+    handleLanguagechange() {
+      this.controlText(this.localize('Skip forward {1} seconds', [this.skipTime]));
+    }
+  }
+  SkipForward.prototype.controlText_ = 'Skip Forward';
+  Component$1.registerComponent('SkipForward', SkipForward);
+
+  /**
+   * Button to skip backward a configurable amount of time
+   * through a video. Renders in the control bar.
+   *
+   *  * e.g. options: {controlBar: {skipButtons: backward: 5}}
+   *
+   * @extends Button
+   */
+  class SkipBackward extends Button {
+    constructor(player, options) {
+      super(player, options);
+      this.validOptions = [5, 10, 30];
+      this.skipTime = this.getSkipBackwardTime();
+      if (this.skipTime && this.validOptions.includes(this.skipTime)) {
+        this.setIcon(`replay-${this.skipTime}`);
+        this.controlText(this.localize('Skip backward {1} seconds', [this.skipTime.toLocaleString(player.language())]));
+        this.show();
+      } else {
+        this.hide();
+      }
+    }
+    getSkipBackwardTime() {
+      const playerOptions = this.options_.playerOptions;
+      return playerOptions.controlBar && playerOptions.controlBar.skipButtons && playerOptions.controlBar.skipButtons.backward;
+    }
+    buildCSSClass() {
+      return `vjs-skip-backward-${this.getSkipBackwardTime()} ${super.buildCSSClass()}`;
+    }
+
+    /**
+     * On click, skips backward in the video by a configurable amount of seconds.
+     * If the current time in the video is less than the configured 'skip backward' time,
+     * skips to beginning of video or seekable range.
+     *
+     * Handle a click on a `SkipBackward` button
+     *
+     * @param {EventTarget~Event} event
+     *        The `click` event that caused this function
+     *        to be called
+     */
+    handleClick(event) {
+      const currentVideoTime = this.player_.currentTime();
+      const liveTracker = this.player_.liveTracker;
+      const seekableStart = liveTracker && liveTracker.isLive() && liveTracker.seekableStart();
+      let newTime;
+      if (seekableStart && currentVideoTime - this.skipTime <= seekableStart) {
+        newTime = seekableStart;
+      } else if (currentVideoTime >= this.skipTime) {
+        newTime = currentVideoTime - this.skipTime;
+      } else {
+        newTime = 0;
+      }
+      this.player_.currentTime(newTime);
+    }
+
+    /**
+     * Update control text on languagechange
+     */
+    handleLanguagechange() {
+      this.controlText(this.localize('Skip backward {1} seconds', [this.skipTime]));
+    }
+  }
+  SkipBackward.prototype.controlText_ = 'Skip Backward';
+  Component$1.registerComponent('SkipBackward', SkipBackward);
+
+  /**
+   * @file menu.js
+   */
+
+  /**
+   * The Menu component is used to build popup menus, including subtitle and
+   * captions selection menus.
+   *
+   * @extends Component
+   */
+  class Menu extends Component$1 {
+    /**
+     * Create an instance of this class.
+     *
+     * @param { import('../player').default } player
+     *        the player that this component should attach to
+     *
+     * @param {Object} [options]
+     *        Object of option names and values
+     *
+     */
+    constructor(player, options) {
+      super(player, options);
+      if (options) {
+        this.menuButton_ = options.menuButton;
+      }
+      this.focusedChild_ = -1;
+      this.on('keydown', e => this.handleKeyDown(e));
+
+      // All the menu item instances share the same blur handler provided by the menu container.
+      this.boundHandleBlur_ = e => this.handleBlur(e);
+      this.boundHandleTapClick_ = e => this.handleTapClick(e);
+    }
+
+    /**
+     * Add event listeners to the {@link MenuItem}.
+     *
+     * @param {Object} component
+     *        The instance of the `MenuItem` to add listeners to.
+     *
+     */
+    addEventListenerForItem(component) {
+      if (!(component instanceof Component$1)) {
+        return;
+      }
+      this.on(component, 'blur', this.boundHandleBlur_);
+      this.on(component, ['tap', 'click'], this.boundHandleTapClick_);
+    }
+
+    /**
+     * Remove event listeners from the {@link MenuItem}.
+     *
+     * @param {Object} component
+     *        The instance of the `MenuItem` to remove listeners.
+     *
+     */
+    removeEventListenerForItem(component) {
+      if (!(component instanceof Component$1)) {
+        return;
+      }
+      this.off(component, 'blur', this.boundHandleBlur_);
+      this.off(component, ['tap', 'click'], this.boundHandleTapClick_);
+    }
+
+    /**
+     * This method will be called indirectly when the component has been added
+     * before the component adds to the new menu instance by `addItem`.
+     * In this case, the original menu instance will remove the component
+     * by calling `removeChild`.
+     *
+     * @param {Object} component
+     *        The instance of the `MenuItem`
+     */
+    removeChild(component) {
+      if (typeof component === 'string') {
+        component = this.getChild(component);
+      }
+      this.removeEventListenerForItem(component);
+      super.removeChild(component);
+    }
+
+    /**
+     * Add a {@link MenuItem} to the menu.
+     *
+     * @param {Object|string} component
+     *        The name or instance of the `MenuItem` to add.
+     *
+     */
+    addItem(component) {
+      const childComponent = this.addChild(component);
+      if (childComponent) {
+        this.addEventListenerForItem(childComponent);
+      }
+    }
+
+    /**
+     * Create the `Menu`s DOM element.
+     *
+     * @return {Element}
+     *         the element that was created
+     */
+    createEl() {
+      const contentElType = this.options_.contentElType || 'ul';
+      this.contentEl_ = createEl(contentElType, {
+        className: 'vjs-menu-content'
+      });
+      this.contentEl_.setAttribute('role', 'menu');
+      const el = super.createEl('div', {
+        append: this.contentEl_,
+        className: 'vjs-menu'
+      });
+      el.appendChild(this.contentEl_);
+
+      // Prevent clicks from bubbling up. Needed for Menu Buttons,
+      // where a click on the parent is significant
+      on(el, 'click', function (event) {
+        event.preventDefault();
+        event.stopImmediatePropagation();
+      });
+      return el;
+    }
+    dispose() {
+      this.contentEl_ = null;
+      this.boundHandleBlur_ = null;
+      this.boundHandleTapClick_ = null;
+      super.dispose();
+    }
+
+    /**
+     * Called when a `MenuItem` loses focus.
+     *
+     * @param {Event} event
+     *        The `blur` event that caused this function to be called.
+     *
+     * @listens blur
+     */
+    handleBlur(event) {
+      const relatedTarget = event.relatedTarget || document.activeElement;
+
+      // Close menu popup when a user clicks outside the menu
+      if (!this.children().some(element => {
+        return element.el() === relatedTarget;
+      })) {
+        const btn = this.menuButton_;
+        if (btn && btn.buttonPressed_ && relatedTarget !== btn.el().firstChild) {
+          btn.unpressButton();
+        }
+      }
+    }
+
+    /**
+     * Called when a `MenuItem` gets clicked or tapped.
+     *
+     * @param {Event} event
+     *        The `click` or `tap` event that caused this function to be called.
+     *
+     * @listens click,tap
+     */
+    handleTapClick(event) {
+      // Unpress the associated MenuButton, and move focus back to it
+      if (this.menuButton_) {
+        this.menuButton_.unpressButton();
+        const childComponents = this.children();
+        if (!Array.isArray(childComponents)) {
+          return;
+        }
+        const foundComponent = childComponents.filter(component => component.el() === event.target)[0];
+        if (!foundComponent) {
+          return;
+        }
+
+        // don't focus menu button if item is a caption settings item
+        // because focus will move elsewhere
+        if (foundComponent.name() !== 'CaptionSettingsMenuItem') {
+          this.menuButton_.focus();
+        }
+      }
+    }
+
+    /**
+     * Handle a `keydown` event on this menu. This listener is added in the constructor.
+     *
+     * @param {KeyboardEvent} event
+     *        A `keydown` event that happened on the menu.
+     *
+     * @listens keydown
+     */
+    handleKeyDown(event) {
+      // Left and Down Arrows
+      if (keycode.isEventKey(event, 'Left') || keycode.isEventKey(event, 'Down')) {
+        event.preventDefault();
+        event.stopPropagation();
+        this.stepForward();
+
+        // Up and Right Arrows
+      } else if (keycode.isEventKey(event, 'Right') || keycode.isEventKey(event, 'Up')) {
+        event.preventDefault();
+        event.stopPropagation();
+        this.stepBack();
+      }
+    }
+
+    /**
+     * Move to next (lower) menu item for keyboard users.
+     */
+    stepForward() {
+      let stepChild = 0;
+      if (this.focusedChild_ !== undefined) {
+        stepChild = this.focusedChild_ + 1;
+      }
+      this.focus(stepChild);
+    }
+
+    /**
+     * Move to previous (higher) menu item for keyboard users.
+     */
+    stepBack() {
+      let stepChild = 0;
+      if (this.focusedChild_ !== undefined) {
+        stepChild = this.focusedChild_ - 1;
+      }
+      this.focus(stepChild);
+    }
+
+    /**
+     * Set focus on a {@link MenuItem} in the `Menu`.
+     *
+     * @param {Object|string} [item=0]
+     *        Index of child item set focus on.
+     */
+    focus(item = 0) {
+      const children = this.children().slice();
+      const haveTitle = children.length && children[0].hasClass('vjs-menu-title');
+      if (haveTitle) {
+        children.shift();
+      }
+      if (children.length > 0) {
+        if (item < 0) {
+          item = 0;
+        } else if (item >= children.length) {
+          item = children.length - 1;
+        }
+        this.focusedChild_ = item;
+        children[item].el_.focus();
+      }
+    }
+  }
+  Component$1.registerComponent('Menu', Menu);
+
+  /**
+   * @file menu-button.js
+   */
+
+  /**
+   * A `MenuButton` class for any popup {@link Menu}.
+   *
+   * @extends Component
+   */
+  class MenuButton extends Component$1 {
+    /**
+     * Creates an instance of this class.
+     *
+     * @param { import('../player').default } player
+     *        The `Player` that this class should be attached to.
+     *
+     * @param {Object} [options={}]
+     *        The key/value store of player options.
+     */
+    constructor(player, options = {}) {
+      super(player, options);
+      this.menuButton_ = new Button(player, options);
+      this.menuButton_.controlText(this.controlText_);
+      this.menuButton_.el_.setAttribute('aria-haspopup', 'true');
+
+      // Add buildCSSClass values to the button, not the wrapper
+      const buttonClass = Button.prototype.buildCSSClass();
+      this.menuButton_.el_.className = this.buildCSSClass() + ' ' + buttonClass;
+      this.menuButton_.removeClass('vjs-control');
+      this.addChild(this.menuButton_);
+      this.update();
+      this.enabled_ = true;
+      const handleClick = e => this.handleClick(e);
+      this.handleMenuKeyUp_ = e => this.handleMenuKeyUp(e);
+      this.on(this.menuButton_, 'tap', handleClick);
+      this.on(this.menuButton_, 'click', handleClick);
+      this.on(this.menuButton_, 'keydown', e => this.handleKeyDown(e));
+      this.on(this.menuButton_, 'mouseenter', () => {
+        this.addClass('vjs-hover');
+        this.menu.show();
+        on(document, 'keyup', this.handleMenuKeyUp_);
+      });
+      this.on('mouseleave', e => this.handleMouseLeave(e));
+      this.on('keydown', e => this.handleSubmenuKeyDown(e));
+    }
+
+    /**
+     * Update the menu based on the current state of its items.
+     */
+    update() {
+      const menu = this.createMenu();
+      if (this.menu) {
+        this.menu.dispose();
+        this.removeChild(this.menu);
+      }
+      this.menu = menu;
+      this.addChild(menu);
+
+      /**
+       * Track the state of the menu button
+       *
+       * @type {Boolean}
+       * @private
+       */
+      this.buttonPressed_ = false;
+      this.menuButton_.el_.setAttribute('aria-expanded', 'false');
+      if (this.items && this.items.length <= this.hideThreshold_) {
+        this.hide();
+        this.menu.contentEl_.removeAttribute('role');
+      } else {
+        this.show();
+        this.menu.contentEl_.setAttribute('role', 'menu');
+      }
+    }
+
+    /**
+     * Create the menu and add all items to it.
+     *
+     * @return {Menu}
+     *         The constructed menu
+     */
+    createMenu() {
+      const menu = new Menu(this.player_, {
+        menuButton: this
+      });
+
+      /**
+       * Hide the menu if the number of items is less than or equal to this threshold. This defaults
+       * to 0 and whenever we add items which can be hidden to the menu we'll increment it. We list
+       * it here because every time we run `createMenu` we need to reset the value.
+       *
+       * @protected
+       * @type {Number}
+       */
+      this.hideThreshold_ = 0;
+
+      // Add a title list item to the top
+      if (this.options_.title) {
+        const titleEl = createEl('li', {
+          className: 'vjs-menu-title',
+          textContent: toTitleCase$1(this.options_.title),
+          tabIndex: -1
+        });
+        const titleComponent = new Component$1(this.player_, {
+          el: titleEl
+        });
+        menu.addItem(titleComponent);
+      }
+      this.items = this.createItems();
+      if (this.items) {
+        // Add menu items to the menu
+        for (let i = 0; i < this.items.length; i++) {
+          menu.addItem(this.items[i]);
+        }
+      }
+      return menu;
+    }
+
+    /**
+     * Create the list of menu items. Specific to each subclass.
+     *
+     * @abstract
+     */
+    createItems() {}
+
+    /**
+     * Create the `MenuButtons`s DOM element.
+     *
+     * @return {Element}
+     *         The element that gets created.
+     */
+    createEl() {
+      return super.createEl('div', {
+        className: this.buildWrapperCSSClass()
+      }, {});
+    }
+
+    /**
+     * Overwrites the `setIcon` method from `Component`.
+     * In this case, we want the icon to be appended to the menuButton.
+     *
+     * @param {string} name
+     *         The icon name to be added.
+     */
+    setIcon(name) {
+      super.setIcon(name, this.menuButton_.el_);
+    }
+
+    /**
+     * Allow sub components to stack CSS class names for the wrapper element
+     *
+     * @return {string}
+     *         The constructed wrapper DOM `className`
+     */
+    buildWrapperCSSClass() {
+      let menuButtonClass = 'vjs-menu-button';
+
+      // If the inline option is passed, we want to use different styles altogether.
+      if (this.options_.inline === true) {
+        menuButtonClass += '-inline';
+      } else {
+        menuButtonClass += '-popup';
+      }
+
+      // TODO: Fix the CSS so that this isn't necessary
+      const buttonClass = Button.prototype.buildCSSClass();
+      return `vjs-menu-button ${menuButtonClass} ${buttonClass} ${super.buildCSSClass()}`;
+    }
+
+    /**
+     * Builds the default DOM `className`.
+     *
+     * @return {string}
+     *         The DOM `className` for this object.
+     */
+    buildCSSClass() {
+      let menuButtonClass = 'vjs-menu-button';
+
+      // If the inline option is passed, we want to use different styles altogether.
+      if (this.options_.inline === true) {
+        menuButtonClass += '-inline';
+      } else {
+        menuButtonClass += '-popup';
+      }
+      return `vjs-menu-button ${menuButtonClass} ${super.buildCSSClass()}`;
+    }
+
+    /**
+     * Get or set the localized control text that will be used for accessibility.
+     *
+     * > NOTE: This will come from the internal `menuButton_` element.
+     *
+     * @param {string} [text]
+     *        Control text for element.
+     *
+     * @param {Element} [el=this.menuButton_.el()]
+     *        Element to set the title on.
+     *
+     * @return {string}
+     *         - The control text when getting
+     */
+    controlText(text, el = this.menuButton_.el()) {
+      return this.menuButton_.controlText(text, el);
+    }
+
+    /**
+     * Dispose of the `menu-button` and all child components.
+     */
+    dispose() {
+      this.handleMouseLeave();
+      super.dispose();
+    }
+
+    /**
+     * Handle a click on a `MenuButton`.
+     * See {@link ClickableComponent#handleClick} for instances where this is called.
+     *
+     * @param {Event} event
+     *        The `keydown`, `tap`, or `click` event that caused this function to be
+     *        called.
+     *
+     * @listens tap
+     * @listens click
+     */
+    handleClick(event) {
+      if (this.buttonPressed_) {
+        this.unpressButton();
+      } else {
+        this.pressButton();
+      }
+    }
+
+    /**
+     * Handle `mouseleave` for `MenuButton`.
+     *
+     * @param {Event} event
+     *        The `mouseleave` event that caused this function to be called.
+     *
+     * @listens mouseleave
+     */
+    handleMouseLeave(event) {
+      this.removeClass('vjs-hover');
+      off(document, 'keyup', this.handleMenuKeyUp_);
+    }
+
+    /**
+     * Set the focus to the actual button, not to this element
+     */
+    focus() {
+      this.menuButton_.focus();
+    }
+
+    /**
+     * Remove the focus from the actual button, not this element
+     */
+    blur() {
+      this.menuButton_.blur();
+    }
+
+    /**
+     * Handle tab, escape, down arrow, and up arrow keys for `MenuButton`. See
+     * {@link ClickableComponent#handleKeyDown} for instances where this is called.
+     *
+     * @param {Event} event
+     *        The `keydown` event that caused this function to be called.
+     *
+     * @listens keydown
+     */
+    handleKeyDown(event) {
+      // Escape or Tab unpress the 'button'
+      if (keycode.isEventKey(event, 'Esc') || keycode.isEventKey(event, 'Tab')) {
+        if (this.buttonPressed_) {
+          this.unpressButton();
+        }
+
+        // Don't preventDefault for Tab key - we still want to lose focus
+        if (!keycode.isEventKey(event, 'Tab')) {
+          event.preventDefault();
+          // Set focus back to the menu button's button
+          this.menuButton_.focus();
+        }
+        // Up Arrow or Down Arrow also 'press' the button to open the menu
+      } else if (keycode.isEventKey(event, 'Up') || keycode.isEventKey(event, 'Down')) {
+        if (!this.buttonPressed_) {
+          event.preventDefault();
+          this.pressButton();
+        }
+      }
+    }
+
+    /**
+     * Handle a `keyup` event on a `MenuButton`. The listener for this is added in
+     * the constructor.
+     *
+     * @param {Event} event
+     *        Key press event
+     *
+     * @listens keyup
+     */
+    handleMenuKeyUp(event) {
+      // Escape hides popup menu
+      if (keycode.isEventKey(event, 'Esc') || keycode.isEventKey(event, 'Tab')) {
+        this.removeClass('vjs-hover');
+      }
+    }
+
+    /**
+     * This method name now delegates to `handleSubmenuKeyDown`. This means
+     * anyone calling `handleSubmenuKeyPress` will not see their method calls
+     * stop working.
+     *
+     * @param {Event} event
+     *        The event that caused this function to be called.
+     */
+    handleSubmenuKeyPress(event) {
+      this.handleSubmenuKeyDown(event);
+    }
+
+    /**
+     * Handle a `keydown` event on a sub-menu. The listener for this is added in
+     * the constructor.
+     *
+     * @param {Event} event
+     *        Key press event
+     *
+     * @listens keydown
+     */
+    handleSubmenuKeyDown(event) {
+      // Escape or Tab unpress the 'button'
+      if (keycode.isEventKey(event, 'Esc') || keycode.isEventKey(event, 'Tab')) {
+        if (this.buttonPressed_) {
+          this.unpressButton();
+        }
+        // Don't preventDefault for Tab key - we still want to lose focus
+        if (!keycode.isEventKey(event, 'Tab')) {
+          event.preventDefault();
+          // Set focus back to the menu button's button
+          this.menuButton_.focus();
+        }
+      }
+    }
+
+    /**
+     * Put the current `MenuButton` into a pressed state.
+     */
+    pressButton() {
+      if (this.enabled_) {
+        this.buttonPressed_ = true;
+        this.menu.show();
+        this.menu.lockShowing();
+        this.menuButton_.el_.setAttribute('aria-expanded', 'true');
+
+        // set the focus into the submenu, except on iOS where it is resulting in
+        // undesired scrolling behavior when the player is in an iframe
+        if (IS_IOS && isInFrame()) {
+          // Return early so that the menu isn't focused
+          return;
+        }
+        this.menu.focus();
+      }
+    }
+
+    /**
+     * Take the current `MenuButton` out of a pressed state.
+     */
+    unpressButton() {
+      if (this.enabled_) {
+        this.buttonPressed_ = false;
+        this.menu.unlockShowing();
+        this.menu.hide();
+        this.menuButton_.el_.setAttribute('aria-expanded', 'false');
+      }
+    }
+
+    /**
+     * Disable the `MenuButton`. Don't allow it to be clicked.
+     */
+    disable() {
+      this.unpressButton();
+      this.enabled_ = false;
+      this.addClass('vjs-disabled');
+      this.menuButton_.disable();
+    }
+
+    /**
+     * Enable the `MenuButton`. Allow it to be clicked.
+     */
+    enable() {
+      this.enabled_ = true;
+      this.removeClass('vjs-disabled');
+      this.menuButton_.enable();
+    }
+  }
+  Component$1.registerComponent('MenuButton', MenuButton);
+
+  /**
+   * @file track-button.js
+   */
+
+  /**
+   * The base class for buttons that toggle specific  track types (e.g. subtitles).
+   *
+   * @extends MenuButton
+   */
+  class TrackButton extends MenuButton {
+    /**
+     * Creates an instance of this class.
+     *
+     * @param { import('./player').default } player
+     *        The `Player` that this class should be attached to.
+     *
+     * @param {Object} [options]
+     *        The key/value store of player options.
+     */
+    constructor(player, options) {
+      const tracks = options.tracks;
+      super(player, options);
+      if (this.items.length <= 1) {
+        this.hide();
+      }
+      if (!tracks) {
+        return;
+      }
+      const updateHandler = bind_(this, this.update);
+      tracks.addEventListener('removetrack', updateHandler);
+      tracks.addEventListener('addtrack', updateHandler);
+      tracks.addEventListener('labelchange', updateHandler);
+      this.player_.on('ready', updateHandler);
+      this.player_.on('dispose', function () {
+        tracks.removeEventListener('removetrack', updateHandler);
+        tracks.removeEventListener('addtrack', updateHandler);
+        tracks.removeEventListener('labelchange', updateHandler);
+      });
+    }
+  }
+  Component$1.registerComponent('TrackButton', TrackButton);
+
+  /**
+   * @file menu-keys.js
+   */
+
+  /**
+    * All keys used for operation of a menu (`MenuButton`, `Menu`, and `MenuItem`)
+    * Note that 'Enter' and 'Space' are not included here (otherwise they would
+    * prevent the `MenuButton` and `MenuItem` from being keyboard-clickable)
+   *
+    * @typedef MenuKeys
+    * @array
+    */
+  const MenuKeys = ['Tab', 'Esc', 'Up', 'Down', 'Right', 'Left'];
+
+  /**
+   * @file menu-item.js
+   */
+
+  /**
+   * The component for a menu item. `<li>`
+   *
+   * @extends ClickableComponent
+   */
+  class MenuItem extends ClickableComponent {
+    /**
+     * Creates an instance of the this class.
+     *
+     * @param { import('../player').default } player
+     *        The `Player` that this class should be attached to.
+     *
+     * @param {Object} [options={}]
+     *        The key/value store of player options.
+     *
+     */
+    constructor(player, options) {
+      super(player, options);
+      this.selectable = options.selectable;
+      this.isSelected_ = options.selected || false;
+      this.multiSelectable = options.multiSelectable;
+      this.selected(this.isSelected_);
+      if (this.selectable) {
+        if (this.multiSelectable) {
+          this.el_.setAttribute('role', 'menuitemcheckbox');
+        } else {
+          this.el_.setAttribute('role', 'menuitemradio');
+        }
+      } else {
+        this.el_.setAttribute('role', 'menuitem');
+      }
+    }
+
+    /**
+     * Create the `MenuItem's DOM element
+     *
+     * @param {string} [type=li]
+     *        Element's node type, not actually used, always set to `li`.
+     *
+     * @param {Object} [props={}]
+     *        An object of properties that should be set on the element
+     *
+     * @param {Object} [attrs={}]
+     *        An object of attributes that should be set on the element
+     *
+     * @return {Element}
+     *         The element that gets created.
+     */
+    createEl(type, props, attrs) {
+      // The control is textual, not just an icon
+      this.nonIconControl = true;
+      const el = super.createEl('li', Object.assign({
+        className: 'vjs-menu-item',
+        tabIndex: -1
+      }, props), attrs);
+
+      // swap icon with menu item text.
+      const menuItemEl = createEl('span', {
+        className: 'vjs-menu-item-text',
+        textContent: this.localize(this.options_.label)
+      });
+
+      // If using SVG icons, the element with vjs-icon-placeholder will be added separately.
+      if (this.player_.options_.experimentalSvgIcons) {
+        el.appendChild(menuItemEl);
+      } else {
+        el.replaceChild(menuItemEl, el.querySelector('.vjs-icon-placeholder'));
+      }
+      return el;
+    }
+
+    /**
+     * Ignore keys which are used by the menu, but pass any other ones up. See
+     * {@link ClickableComponent#handleKeyDown} for instances where this is called.
+     *
+     * @param {KeyboardEvent} event
+     *        The `keydown` event that caused this function to be called.
+     *
+     * @listens keydown
+     */
+    handleKeyDown(event) {
+      if (!MenuKeys.some(key => keycode.isEventKey(event, key))) {
+        // Pass keydown handling up for unused keys
+        super.handleKeyDown(event);
+      }
+    }
+
+    /**
+     * Any click on a `MenuItem` puts it into the selected state.
+     * See {@link ClickableComponent#handleClick} for instances where this is called.
+     *
+     * @param {Event} event
+     *        The `keydown`, `tap`, or `click` event that caused this function to be
+     *        called.
+     *
+     * @listens tap
+     * @listens click
+     */
+    handleClick(event) {
+      this.selected(true);
+    }
+
+    /**
+     * Set the state for this menu item as selected or not.
+     *
+     * @param {boolean} selected
+     *        if the menu item is selected or not
+     */
+    selected(selected) {
+      if (this.selectable) {
+        if (selected) {
+          this.addClass('vjs-selected');
+          this.el_.setAttribute('aria-checked', 'true');
+          // aria-checked isn't fully supported by browsers/screen readers,
+          // so indicate selected state to screen reader in the control text.
+          this.controlText(', selected');
+          this.isSelected_ = true;
+        } else {
+          this.removeClass('vjs-selected');
+          this.el_.setAttribute('aria-checked', 'false');
+          // Indicate un-selected state to screen reader
+          this.controlText('');
+          this.isSelected_ = false;
+        }
+      }
+    }
+  }
+  Component$1.registerComponent('MenuItem', MenuItem);
+
+  /**
+   * @file text-track-menu-item.js
+   */
+
+  /**
+   * The specific menu item type for selecting a language within a text track kind
+   *
+   * @extends MenuItem
+   */
+  class TextTrackMenuItem extends MenuItem {
+    /**
+     * Creates an instance of this class.
+     *
+     * @param { import('../../player').default } player
+     *        The `Player` that this class should be attached to.
+     *
+     * @param {Object} [options]
+     *        The key/value store of player options.
+     */
+    constructor(player, options) {
+      const track = options.track;
+      const tracks = player.textTracks();
+
+      // Modify options for parent MenuItem class's init.
+      options.label = track.label || track.language || 'Unknown';
+      options.selected = track.mode === 'showing';
+      super(player, options);
+      this.track = track;
+      // Determine the relevant kind(s) of tracks for this component and filter
+      // out empty kinds.
+      this.kinds = (options.kinds || [options.kind || this.track.kind]).filter(Boolean);
+      const changeHandler = (...args) => {
+        this.handleTracksChange.apply(this, args);
+      };
+      const selectedLanguageChangeHandler = (...args) => {
+        this.handleSelectedLanguageChange.apply(this, args);
+      };
+      player.on(['loadstart', 'texttrackchange'], changeHandler);
+      tracks.addEventListener('change', changeHandler);
+      tracks.addEventListener('selectedlanguagechange', selectedLanguageChangeHandler);
+      this.on('dispose', function () {
+        player.off(['loadstart', 'texttrackchange'], changeHandler);
+        tracks.removeEventListener('change', changeHandler);
+        tracks.removeEventListener('selectedlanguagechange', selectedLanguageChangeHandler);
+      });
+
+      // iOS7 doesn't dispatch change events to TextTrackLists when an
+      // associated track's mode changes. Without something like
+      // Object.observe() (also not present on iOS7), it's not
+      // possible to detect changes to the mode attribute and polyfill
+      // the change event. As a poor substitute, we manually dispatch
+      // change events whenever the controls modify the mode.
+      if (tracks.onchange === undefined) {
+        let event;
+        this.on(['tap', 'click'], function () {
+          if (typeof window.Event !== 'object') {
+            // Android 2.3 throws an Illegal Constructor error for window.Event
+            try {
+              event = new window.Event('change');
+            } catch (err) {
+              // continue regardless of error
+            }
+          }
+          if (!event) {
+            event = document.createEvent('Event');
+            event.initEvent('change', true, true);
+          }
+          tracks.dispatchEvent(event);
+        });
+      }
+
+      // set the default state based on current tracks
+      this.handleTracksChange();
+    }
+
+    /**
+     * This gets called when an `TextTrackMenuItem` is "clicked". See
+     * {@link ClickableComponent} for more detailed information on what a click can be.
+     *
+     * @param {Event} event
+     *        The `keydown`, `tap`, or `click` event that caused this function to be
+     *        called.
+     *
+     * @listens tap
+     * @listens click
+     */
+    handleClick(event) {
+      const referenceTrack = this.track;
+      const tracks = this.player_.textTracks();
+      super.handleClick(event);
+      if (!tracks) {
+        return;
+      }
+      for (let i = 0; i < tracks.length; i++) {
+        const track = tracks[i];
+
+        // If the track from the text tracks list is not of the right kind,
+        // skip it. We do not want to affect tracks of incompatible kind(s).
+        if (this.kinds.indexOf(track.kind) === -1) {
+          continue;
+        }
+
+        // If this text track is the component's track and it is not showing,
+        // set it to showing.
+        if (track === referenceTrack) {
+          if (track.mode !== 'showing') {
+            track.mode = 'showing';
+          }
+
+          // If this text track is not the component's track and it is not
+          // disabled, set it to disabled.
+        } else if (track.mode !== 'disabled') {
+          track.mode = 'disabled';
+        }
+      }
+    }
+
+    /**
+     * Handle text track list change
+     *
+     * @param {Event} event
+     *        The `change` event that caused this function to be called.
+     *
+     * @listens TextTrackList#change
+     */
+    handleTracksChange(event) {
+      const shouldBeSelected = this.track.mode === 'showing';
+
+      // Prevent redundant selected() calls because they may cause
+      // screen readers to read the appended control text unnecessarily
+      if (shouldBeSelected !== this.isSelected_) {
+        this.selected(shouldBeSelected);
+      }
+    }
+    handleSelectedLanguageChange(event) {
+      if (this.track.mode === 'showing') {
+        const selectedLanguage = this.player_.cache_.selectedLanguage;
+
+        // Don't replace the kind of track across the same language
+        if (selectedLanguage && selectedLanguage.enabled && selectedLanguage.language === this.track.language && selectedLanguage.kind !== this.track.kind) {
+          return;
+        }
+        this.player_.cache_.selectedLanguage = {
+          enabled: true,
+          language: this.track.language,
+          kind: this.track.kind
+        };
+      }
+    }
+    dispose() {
+      // remove reference to track object on dispose
+      this.track = null;
+      super.dispose();
+    }
+  }
+  Component$1.registerComponent('TextTrackMenuItem', TextTrackMenuItem);
+
+  /**
+   * @file off-text-track-menu-item.js
+   */
+
+  /**
+   * A special menu item for turning off a specific type of text track
+   *
+   * @extends TextTrackMenuItem
+   */
+  class OffTextTrackMenuItem extends TextTrackMenuItem {
+    /**
+     * Creates an instance of this class.
+     *
+     * @param { import('../../player').default } player
+     *        The `Player` that this class should be attached to.
+     *
+     * @param {Object} [options]
+     *        The key/value store of player options.
+     */
+    constructor(player, options) {
+      // Create pseudo track info
+      // Requires options['kind']
+      options.track = {
+        player,
+        // it is no longer necessary to store `kind` or `kinds` on the track itself
+        // since they are now stored in the `kinds` property of all instances of
+        // TextTrackMenuItem, but this will remain for backwards compatibility
+        kind: options.kind,
+        kinds: options.kinds,
+        default: false,
+        mode: 'disabled'
+      };
+      if (!options.kinds) {
+        options.kinds = [options.kind];
+      }
+      if (options.label) {
+        options.track.label = options.label;
+      } else {
+        options.track.label = options.kinds.join(' and ') + ' off';
+      }
+
+      // MenuItem is selectable
+      options.selectable = true;
+      // MenuItem is NOT multiSelectable (i.e. only one can be marked "selected" at a time)
+      options.multiSelectable = false;
+      super(player, options);
+    }
+
+    /**
+     * Handle text track change
+     *
+     * @param {Event} event
+     *        The event that caused this function to run
+     */
+    handleTracksChange(event) {
+      const tracks = this.player().textTracks();
+      let shouldBeSelected = true;
+      for (let i = 0, l = tracks.length; i < l; i++) {
+        const track = tracks[i];
+        if (this.options_.kinds.indexOf(track.kind) > -1 && track.mode === 'showing') {
+          shouldBeSelected = false;
+          break;
+        }
+      }
+
+      // Prevent redundant selected() calls because they may cause
+      // screen readers to read the appended control text unnecessarily
+      if (shouldBeSelected !== this.isSelected_) {
+        this.selected(shouldBeSelected);
+      }
+    }
+    handleSelectedLanguageChange(event) {
+      const tracks = this.player().textTracks();
+      let allHidden = true;
+      for (let i = 0, l = tracks.length; i < l; i++) {
+        const track = tracks[i];
+        if (['captions', 'descriptions', 'subtitles'].indexOf(track.kind) > -1 && track.mode === 'showing') {
+          allHidden = false;
+          break;
+        }
+      }
+      if (allHidden) {
+        this.player_.cache_.selectedLanguage = {
+          enabled: false
+        };
+      }
+    }
+
+    /**
+     * Update control text and label on languagechange
+     */
+    handleLanguagechange() {
+      this.$('.vjs-menu-item-text').textContent = this.player_.localize(this.options_.label);
+      super.handleLanguagechange();
+    }
+  }
+  Component$1.registerComponent('OffTextTrackMenuItem', OffTextTrackMenuItem);
+
+  /**
+   * @file text-track-button.js
+   */
+
+  /**
+   * The base class for buttons that toggle specific text track types (e.g. subtitles)
+   *
+   * @extends MenuButton
+   */
+  class TextTrackButton extends TrackButton {
+    /**
+     * Creates an instance of this class.
+     *
+     * @param { import('../../player').default } player
+     *        The `Player` that this class should be attached to.
+     *
+     * @param {Object} [options={}]
+     *        The key/value store of player options.
+     */
+    constructor(player, options = {}) {
+      options.tracks = player.textTracks();
+      super(player, options);
+    }
+
+    /**
+     * Create a menu item for each text track
+     *
+     * @param {TextTrackMenuItem[]} [items=[]]
+     *        Existing array of items to use during creation
+     *
+     * @return {TextTrackMenuItem[]}
+     *         Array of menu items that were created
+     */
+    createItems(items = [], TrackMenuItem = TextTrackMenuItem) {
+      // Label is an override for the [track] off label
+      // USed to localise captions/subtitles
+      let label;
+      if (this.label_) {
+        label = `${this.label_} off`;
+      }
+      // Add an OFF menu item to turn all tracks off
+      items.push(new OffTextTrackMenuItem(this.player_, {
+        kinds: this.kinds_,
+        kind: this.kind_,
+        label
+      }));
+      this.hideThreshold_ += 1;
+      const tracks = this.player_.textTracks();
+      if (!Array.isArray(this.kinds_)) {
+        this.kinds_ = [this.kind_];
+      }
+      for (let i = 0; i < tracks.length; i++) {
+        const track = tracks[i];
+
+        // only add tracks that are of an appropriate kind and have a label
+        if (this.kinds_.indexOf(track.kind) > -1) {
+          const item = new TrackMenuItem(this.player_, {
+            track,
+            kinds: this.kinds_,
+            kind: this.kind_,
+            // MenuItem is selectable
+            selectable: true,
+            // MenuItem is NOT multiSelectable (i.e. only one can be marked "selected" at a time)
+            multiSelectable: false
+          });
+          item.addClass(`vjs-${track.kind}-menu-item`);
+          items.push(item);
+        }
+      }
+      return items;
+    }
+  }
+  Component$1.registerComponent('TextTrackButton', TextTrackButton);
+
+  /**
+   * @file chapters-track-menu-item.js
+   */
+
+  /**
+   * The chapter track menu item
+   *
+   * @extends MenuItem
+   */
+  class ChaptersTrackMenuItem extends MenuItem {
+    /**
+     * Creates an instance of this class.
+     *
+     * @param { import('../../player').default } player
+     *        The `Player` that this class should be attached to.
+     *
+     * @param {Object} [options]
+     *        The key/value store of player options.
+     */
+    constructor(player, options) {
+      const track = options.track;
+      const cue = options.cue;
+      const currentTime = player.currentTime();
+
+      // Modify options for parent MenuItem class's init.
+      options.selectable = true;
+      options.multiSelectable = false;
+      options.label = cue.text;
+      options.selected = cue.startTime <= currentTime && currentTime < cue.endTime;
+      super(player, options);
+      this.track = track;
+      this.cue = cue;
+    }
+
+    /**
+     * This gets called when an `ChaptersTrackMenuItem` is "clicked". See
+     * {@link ClickableComponent} for more detailed information on what a click can be.
+     *
+     * @param {Event} [event]
+     *        The `keydown`, `tap`, or `click` event that caused this function to be
+     *        called.
+     *
+     * @listens tap
+     * @listens click
+     */
+    handleClick(event) {
+      super.handleClick();
+      this.player_.currentTime(this.cue.startTime);
+    }
+  }
+  Component$1.registerComponent('ChaptersTrackMenuItem', ChaptersTrackMenuItem);
+
+  /**
+   * @file chapters-button.js
+   */
+
+  /**
+   * The button component for toggling and selecting chapters
+   * Chapters act much differently than other text tracks
+   * Cues are navigation vs. other tracks of alternative languages
+   *
+   * @extends TextTrackButton
+   */
+  class ChaptersButton extends TextTrackButton {
+    /**
+     * Creates an instance of this class.
+     *
+     * @param { import('../../player').default } player
+     *        The `Player` that this class should be attached to.
+     *
+     * @param {Object} [options]
+     *        The key/value store of player options.
+     *
+     * @param {Function} [ready]
+     *        The function to call when this function is ready.
+     */
+    constructor(player, options, ready) {
+      super(player, options, ready);
+      this.setIcon('chapters');
+      this.selectCurrentItem_ = () => {
+        this.items.forEach(item => {
+          item.selected(this.track_.activeCues[0] === item.cue);
+        });
+      };
+    }
+
+    /**
+     * Builds the default DOM `className`.
+     *
+     * @return {string}
+     *         The DOM `className` for this object.
+     */
+    buildCSSClass() {
+      return `vjs-chapters-button ${super.buildCSSClass()}`;
+    }
+    buildWrapperCSSClass() {
+      return `vjs-chapters-button ${super.buildWrapperCSSClass()}`;
+    }
+
+    /**
+     * Update the menu based on the current state of its items.
+     *
+     * @param {Event} [event]
+     *        An event that triggered this function to run.
+     *
+     * @listens TextTrackList#addtrack
+     * @listens TextTrackList#removetrack
+     * @listens TextTrackList#change
+     */
+    update(event) {
+      if (event && event.track && event.track.kind !== 'chapters') {
+        return;
+      }
+      const track = this.findChaptersTrack();
+      if (track !== this.track_) {
+        this.setTrack(track);
+        super.update();
+      } else if (!this.items || track && track.cues && track.cues.length !== this.items.length) {
+        // Update the menu initially or if the number of cues has changed since set
+        super.update();
+      }
+    }
+
+    /**
+     * Set the currently selected track for the chapters button.
+     *
+     * @param {TextTrack} track
+     *        The new track to select. Nothing will change if this is the currently selected
+     *        track.
+     */
+    setTrack(track) {
+      if (this.track_ === track) {
+        return;
+      }
+      if (!this.updateHandler_) {
+        this.updateHandler_ = this.update.bind(this);
+      }
+
+      // here this.track_ refers to the old track instance
+      if (this.track_) {
+        const remoteTextTrackEl = this.player_.remoteTextTrackEls().getTrackElementByTrack_(this.track_);
+        if (remoteTextTrackEl) {
+          remoteTextTrackEl.removeEventListener('load', this.updateHandler_);
+        }
+        this.track_.removeEventListener('cuechange', this.selectCurrentItem_);
+        this.track_ = null;
+      }
+      this.track_ = track;
+
+      // here this.track_ refers to the new track instance
+      if (this.track_) {
+        this.track_.mode = 'hidden';
+        const remoteTextTrackEl = this.player_.remoteTextTrackEls().getTrackElementByTrack_(this.track_);
+        if (remoteTextTrackEl) {
+          remoteTextTrackEl.addEventListener('load', this.updateHandler_);
+        }
+        this.track_.addEventListener('cuechange', this.selectCurrentItem_);
+      }
+    }
+
+    /**
+     * Find the track object that is currently in use by this ChaptersButton
+     *
+     * @return {TextTrack|undefined}
+     *         The current track or undefined if none was found.
+     */
+    findChaptersTrack() {
+      const tracks = this.player_.textTracks() || [];
+      for (let i = tracks.length - 1; i >= 0; i--) {
+        // We will always choose the last track as our chaptersTrack
+        const track = tracks[i];
+        if (track.kind === this.kind_) {
+          return track;
+        }
+      }
+    }
+
+    /**
+     * Get the caption for the ChaptersButton based on the track label. This will also
+     * use the current tracks localized kind as a fallback if a label does not exist.
+     *
+     * @return {string}
+     *         The tracks current label or the localized track kind.
+     */
+    getMenuCaption() {
+      if (this.track_ && this.track_.label) {
+        return this.track_.label;
+      }
+      return this.localize(toTitleCase$1(this.kind_));
+    }
+
+    /**
+     * Create menu from chapter track
+     *
+     * @return { import('../../menu/menu').default }
+     *         New menu for the chapter buttons
+     */
+    createMenu() {
+      this.options_.title = this.getMenuCaption();
+      return super.createMenu();
+    }
+
+    /**
+     * Create a menu item for each text track
+     *
+     * @return  { import('./text-track-menu-item').default[] }
+     *         Array of menu items
+     */
+    createItems() {
+      const items = [];
+      if (!this.track_) {
+        return items;
+      }
+      const cues = this.track_.cues;
+      if (!cues) {
+        return items;
+      }
+      for (let i = 0, l = cues.length; i < l; i++) {
+        const cue = cues[i];
+        const mi = new ChaptersTrackMenuItem(this.player_, {
+          track: this.track_,
+          cue
+        });
+        items.push(mi);
+      }
+      return items;
+    }
+  }
+
+  /**
+   * `kind` of TextTrack to look for to associate it with this menu.
+   *
+   * @type {string}
+   * @private
+   */
+  ChaptersButton.prototype.kind_ = 'chapters';
+
+  /**
+   * The text that should display over the `ChaptersButton`s controls. Added for localization.
+   *
+   * @type {string}
+   * @protected
+   */
+  ChaptersButton.prototype.controlText_ = 'Chapters';
+  Component$1.registerComponent('ChaptersButton', ChaptersButton);
+
+  /**
+   * @file descriptions-button.js
+   */
+
+  /**
+   * The button component for toggling and selecting descriptions
+   *
+   * @extends TextTrackButton
+   */
+  class DescriptionsButton extends TextTrackButton {
+    /**
+     * Creates an instance of this class.
+     *
+     * @param { import('../../player').default } player
+     *        The `Player` that this class should be attached to.
+     *
+     * @param {Object} [options]
+     *        The key/value store of player options.
+     *
+     * @param {Function} [ready]
+     *        The function to call when this component is ready.
+     */
+    constructor(player, options, ready) {
+      super(player, options, ready);
+      this.setIcon('audio-description');
+      const tracks = player.textTracks();
+      const changeHandler = bind_(this, this.handleTracksChange);
+      tracks.addEventListener('change', changeHandler);
+      this.on('dispose', function () {
+        tracks.removeEventListener('change', changeHandler);
+      });
+    }
+
+    /**
+     * Handle text track change
+     *
+     * @param {Event} event
+     *        The event that caused this function to run
+     *
+     * @listens TextTrackList#change
+     */
+    handleTracksChange(event) {
+      const tracks = this.player().textTracks();
+      let disabled = false;
+
+      // Check whether a track of a different kind is showing
+      for (let i = 0, l = tracks.length; i < l; i++) {
+        const track = tracks[i];
+        if (track.kind !== this.kind_ && track.mode === 'showing') {
+          disabled = true;
+          break;
+        }
+      }
+
+      // If another track is showing, disable this menu button
+      if (disabled) {
+        this.disable();
+      } else {
+        this.enable();
+      }
+    }
+
+    /**
+     * Builds the default DOM `className`.
+     *
+     * @return {string}
+     *         The DOM `className` for this object.
+     */
+    buildCSSClass() {
+      return `vjs-descriptions-button ${super.buildCSSClass()}`;
+    }
+    buildWrapperCSSClass() {
+      return `vjs-descriptions-button ${super.buildWrapperCSSClass()}`;
+    }
+  }
+
+  /**
+   * `kind` of TextTrack to look for to associate it with this menu.
+   *
+   * @type {string}
+   * @private
+   */
+  DescriptionsButton.prototype.kind_ = 'descriptions';
+
+  /**
+   * The text that should display over the `DescriptionsButton`s controls. Added for localization.
+   *
+   * @type {string}
+   * @protected
+   */
+  DescriptionsButton.prototype.controlText_ = 'Descriptions';
+  Component$1.registerComponent('DescriptionsButton', DescriptionsButton);
+
+  /**
+   * @file subtitles-button.js
+   */
+
+  /**
+   * The button component for toggling and selecting subtitles
+   *
+   * @extends TextTrackButton
+   */
+  class SubtitlesButton extends TextTrackButton {
+    /**
+     * Creates an instance of this class.
+     *
+     * @param { import('../../player').default } player
+     *        The `Player` that this class should be attached to.
+     *
+     * @param {Object} [options]
+     *        The key/value store of player options.
+     *
+     * @param {Function} [ready]
+     *        The function to call when this component is ready.
+     */
+    constructor(player, options, ready) {
+      super(player, options, ready);
+      this.setIcon('subtitles');
+    }
+
+    /**
+     * Builds the default DOM `className`.
+     *
+     * @return {string}
+     *         The DOM `className` for this object.
+     */
+    buildCSSClass() {
+      return `vjs-subtitles-button ${super.buildCSSClass()}`;
+    }
+    buildWrapperCSSClass() {
+      return `vjs-subtitles-button ${super.buildWrapperCSSClass()}`;
+    }
+  }
+
+  /**
+   * `kind` of TextTrack to look for to associate it with this menu.
+   *
+   * @type {string}
+   * @private
+   */
+  SubtitlesButton.prototype.kind_ = 'subtitles';
+
+  /**
+   * The text that should display over the `SubtitlesButton`s controls. Added for localization.
+   *
+   * @type {string}
+   * @protected
+   */
+  SubtitlesButton.prototype.controlText_ = 'Subtitles';
+  Component$1.registerComponent('SubtitlesButton', SubtitlesButton);
+
+  /**
+   * @file caption-settings-menu-item.js
+   */
+
+  /**
+   * The menu item for caption track settings menu
+   *
+   * @extends TextTrackMenuItem
+   */
+  class CaptionSettingsMenuItem extends TextTrackMenuItem {
+    /**
+     * Creates an instance of this class.
+     *
+     * @param { import('../../player').default } player
+     *        The `Player` that this class should be attached to.
+     *
+     * @param {Object} [options]
+     *        The key/value store of player options.
+     */
+    constructor(player, options) {
+      options.track = {
+        player,
+        kind: options.kind,
+        label: options.kind + ' settings',
+        selectable: false,
+        default: false,
+        mode: 'disabled'
+      };
+
+      // CaptionSettingsMenuItem has no concept of 'selected'
+      options.selectable = false;
+      options.name = 'CaptionSettingsMenuItem';
+      super(player, options);
+      this.addClass('vjs-texttrack-settings');
+      this.controlText(', opens ' + options.kind + ' settings dialog');
+    }
+
+    /**
+     * This gets called when an `CaptionSettingsMenuItem` is "clicked". See
+     * {@link ClickableComponent} for more detailed information on what a click can be.
+     *
+     * @param {Event} [event]
+     *        The `keydown`, `tap`, or `click` event that caused this function to be
+     *        called.
+     *
+     * @listens tap
+     * @listens click
+     */
+    handleClick(event) {
+      this.player().getChild('textTrackSettings').open();
+    }
+
+    /**
+     * Update control text and label on languagechange
+     */
+    handleLanguagechange() {
+      this.$('.vjs-menu-item-text').textContent = this.player_.localize(this.options_.kind + ' settings');
+      super.handleLanguagechange();
+    }
+  }
+  Component$1.registerComponent('CaptionSettingsMenuItem', CaptionSettingsMenuItem);
+
+  /**
+   * @file captions-button.js
+   */
+
+  /**
+   * The button component for toggling and selecting captions
+   *
+   * @extends TextTrackButton
+   */
+  class CaptionsButton extends TextTrackButton {
+    /**
+     * Creates an instance of this class.
+     *
+     * @param { import('../../player').default } player
+     *        The `Player` that this class should be attached to.
+     *
+     * @param {Object} [options]
+     *        The key/value store of player options.
+     *
+     * @param {Function} [ready]
+     *        The function to call when this component is ready.
+     */
+    constructor(player, options, ready) {
+      super(player, options, ready);
+      this.setIcon('captions');
+    }
+
+    /**
+     * Builds the default DOM `className`.
+     *
+     * @return {string}
+     *         The DOM `className` for this object.
+     */
+    buildCSSClass() {
+      return `vjs-captions-button ${super.buildCSSClass()}`;
+    }
+    buildWrapperCSSClass() {
+      return `vjs-captions-button ${super.buildWrapperCSSClass()}`;
+    }
+
+    /**
+     * Create caption menu items
+     *
+     * @return {CaptionSettingsMenuItem[]}
+     *         The array of current menu items.
+     */
+    createItems() {
+      const items = [];
+      if (!(this.player().tech_ && this.player().tech_.featuresNativeTextTracks) && this.player().getChild('textTrackSettings')) {
+        items.push(new CaptionSettingsMenuItem(this.player_, {
+          kind: this.kind_
+        }));
+        this.hideThreshold_ += 1;
+      }
+      return super.createItems(items);
+    }
+  }
+
+  /**
+   * `kind` of TextTrack to look for to associate it with this menu.
+   *
+   * @type {string}
+   * @private
+   */
+  CaptionsButton.prototype.kind_ = 'captions';
+
+  /**
+   * The text that should display over the `CaptionsButton`s controls. Added for localization.
+   *
+   * @type {string}
+   * @protected
+   */
+  CaptionsButton.prototype.controlText_ = 'Captions';
+  Component$1.registerComponent('CaptionsButton', CaptionsButton);
+
+  /**
+   * @file subs-caps-menu-item.js
+   */
+
+  /**
+   * SubsCapsMenuItem has an [cc] icon to distinguish captions from subtitles
+   * in the SubsCapsMenu.
+   *
+   * @extends TextTrackMenuItem
+   */
+  class SubsCapsMenuItem extends TextTrackMenuItem {
+    createEl(type, props, attrs) {
+      const el = super.createEl(type, props, attrs);
+      const parentSpan = el.querySelector('.vjs-menu-item-text');
+      if (this.options_.track.kind === 'captions') {
+        if (this.player_.options_.experimentalSvgIcons) {
+          this.setIcon('captions', el);
+        } else {
+          parentSpan.appendChild(createEl('span', {
+            className: 'vjs-icon-placeholder'
+          }, {
+            'aria-hidden': true
+          }));
+        }
+        parentSpan.appendChild(createEl('span', {
+          className: 'vjs-control-text',
+          // space added as the text will visually flow with the
+          // label
+          textContent: ` ${this.localize('Captions')}`
+        }));
+      }
+      return el;
+    }
+  }
+  Component$1.registerComponent('SubsCapsMenuItem', SubsCapsMenuItem);
+
+  /**
+   * @file sub-caps-button.js
+   */
+
+  /**
+   * The button component for toggling and selecting captions and/or subtitles
+   *
+   * @extends TextTrackButton
+   */
+  class SubsCapsButton extends TextTrackButton {
+    /**
+     * Creates an instance of this class.
+     *
+     * @param { import('../../player').default } player
+     *        The `Player` that this class should be attached to.
+     *
+     * @param {Object} [options]
+     *        The key/value store of player options.
+     *
+     * @param {Function} [ready]
+     *        The function to call when this component is ready.
+     */
+    constructor(player, options = {}) {
+      super(player, options);
+
+      // Although North America uses "captions" in most cases for
+      // "captions and subtitles" other locales use "subtitles"
+      this.label_ = 'subtitles';
+      this.setIcon('subtitles');
+      if (['en', 'en-us', 'en-ca', 'fr-ca'].indexOf(this.player_.language_) > -1) {
+        this.label_ = 'captions';
+        this.setIcon('captions');
+      }
+      this.menuButton_.controlText(toTitleCase$1(this.label_));
+    }
+
+    /**
+     * Builds the default DOM `className`.
+     *
+     * @return {string}
+     *         The DOM `className` for this object.
+     */
+    buildCSSClass() {
+      return `vjs-subs-caps-button ${super.buildCSSClass()}`;
+    }
+    buildWrapperCSSClass() {
+      return `vjs-subs-caps-button ${super.buildWrapperCSSClass()}`;
+    }
+
+    /**
+     * Create caption/subtitles menu items
+     *
+     * @return {CaptionSettingsMenuItem[]}
+     *         The array of current menu items.
+     */
+    createItems() {
+      let items = [];
+      if (!(this.player().tech_ && this.player().tech_.featuresNativeTextTracks) && this.player().getChild('textTrackSettings')) {
+        items.push(new CaptionSettingsMenuItem(this.player_, {
+          kind: this.label_
+        }));
+        this.hideThreshold_ += 1;
+      }
+      items = super.createItems(items, SubsCapsMenuItem);
+      return items;
+    }
+  }
+
+  /**
+   * `kind`s of TextTrack to look for to associate it with this menu.
+   *
+   * @type {array}
+   * @private
+   */
+  SubsCapsButton.prototype.kinds_ = ['captions', 'subtitles'];
+
+  /**
+   * The text that should display over the `SubsCapsButton`s controls.
+   *
+   *
+   * @type {string}
+   * @protected
+   */
+  SubsCapsButton.prototype.controlText_ = 'Subtitles';
+  Component$1.registerComponent('SubsCapsButton', SubsCapsButton);
+
+  /**
+   * @file audio-track-menu-item.js
+   */
+
+  /**
+   * An {@link AudioTrack} {@link MenuItem}
+   *
+   * @extends MenuItem
+   */
+  class AudioTrackMenuItem extends MenuItem {
+    /**
+     * Creates an instance of this class.
+     *
+     * @param { import('../../player').default } player
+     *        The `Player` that this class should be attached to.
+     *
+     * @param {Object} [options]
+     *        The key/value store of player options.
+     */
+    constructor(player, options) {
+      const track = options.track;
+      const tracks = player.audioTracks();
+
+      // Modify options for parent MenuItem class's init.
+      options.label = track.label || track.language || 'Unknown';
+      options.selected = track.enabled;
+      super(player, options);
+      this.track = track;
+      this.addClass(`vjs-${track.kind}-menu-item`);
+      const changeHandler = (...args) => {
+        this.handleTracksChange.apply(this, args);
+      };
+      tracks.addEventListener('change', changeHandler);
+      this.on('dispose', () => {
+        tracks.removeEventListener('change', changeHandler);
+      });
+    }
+    createEl(type, props, attrs) {
+      const el = super.createEl(type, props, attrs);
+      const parentSpan = el.querySelector('.vjs-menu-item-text');
+      if (['main-desc', 'description'].indexOf(this.options_.track.kind) >= 0) {
+        parentSpan.appendChild(createEl('span', {
+          className: 'vjs-icon-placeholder'
+        }, {
+          'aria-hidden': true
+        }));
+        parentSpan.appendChild(createEl('span', {
+          className: 'vjs-control-text',
+          textContent: ' ' + this.localize('Descriptions')
+        }));
+      }
+      return el;
+    }
+
+    /**
+     * This gets called when an `AudioTrackMenuItem is "clicked". See {@link ClickableComponent}
+     * for more detailed information on what a click can be.
+     *
+     * @param {Event} [event]
+     *        The `keydown`, `tap`, or `click` event that caused this function to be
+     *        called.
+     *
+     * @listens tap
+     * @listens click
+     */
+    handleClick(event) {
+      super.handleClick(event);
+
+      // the audio track list will automatically toggle other tracks
+      // off for us.
+      this.track.enabled = true;
+
+      // when native audio tracks are used, we want to make sure that other tracks are turned off
+      if (this.player_.tech_.featuresNativeAudioTracks) {
+        const tracks = this.player_.audioTracks();
+        for (let i = 0; i < tracks.length; i++) {
+          const track = tracks[i];
+
+          // skip the current track since we enabled it above
+          if (track === this.track) {
+            continue;
+          }
+          track.enabled = track === this.track;
+        }
+      }
+    }
+
+    /**
+     * Handle any {@link AudioTrack} change.
+     *
+     * @param {Event} [event]
+     *        The {@link AudioTrackList#change} event that caused this to run.
+     *
+     * @listens AudioTrackList#change
+     */
+    handleTracksChange(event) {
+      this.selected(this.track.enabled);
+    }
+  }
+  Component$1.registerComponent('AudioTrackMenuItem', AudioTrackMenuItem);
+
+  /**
+   * @file audio-track-button.js
+   */
+
+  /**
+   * The base class for buttons that toggle specific {@link AudioTrack} types.
+   *
+   * @extends TrackButton
+   */
+  class AudioTrackButton extends TrackButton {
+    /**
+     * Creates an instance of this class.
+     *
+     * @param {Player} player
+     *        The `Player` that this class should be attached to.
+     *
+     * @param {Object} [options={}]
+     *        The key/value store of player options.
+     */
+    constructor(player, options = {}) {
+      options.tracks = player.audioTracks();
+      super(player, options);
+      this.setIcon('audio');
+    }
+
+    /**
+     * Builds the default DOM `className`.
+     *
+     * @return {string}
+     *         The DOM `className` for this object.
+     */
+    buildCSSClass() {
+      return `vjs-audio-button ${super.buildCSSClass()}`;
+    }
+    buildWrapperCSSClass() {
+      return `vjs-audio-button ${super.buildWrapperCSSClass()}`;
+    }
+
+    /**
+     * Create a menu item for each audio track
+     *
+     * @param {AudioTrackMenuItem[]} [items=[]]
+     *        An array of existing menu items to use.
+     *
+     * @return {AudioTrackMenuItem[]}
+     *         An array of menu items
+     */
+    createItems(items = []) {
+      // if there's only one audio track, there no point in showing it
+      this.hideThreshold_ = 1;
+      const tracks = this.player_.audioTracks();
+      for (let i = 0; i < tracks.length; i++) {
+        const track = tracks[i];
+        items.push(new AudioTrackMenuItem(this.player_, {
+          track,
+          // MenuItem is selectable
+          selectable: true,
+          // MenuItem is NOT multiSelectable (i.e. only one can be marked "selected" at a time)
+          multiSelectable: false
+        }));
+      }
+      return items;
+    }
+  }
+
+  /**
+   * The text that should display over the `AudioTrackButton`s controls. Added for localization.
+   *
+   * @type {string}
+   * @protected
+   */
+  AudioTrackButton.prototype.controlText_ = 'Audio Track';
+  Component$1.registerComponent('AudioTrackButton', AudioTrackButton);
+
+  /**
+   * @file playback-rate-menu-item.js
+   */
+
+  /**
+   * The specific menu item type for selecting a playback rate.
+   *
+   * @extends MenuItem
+   */
+  class PlaybackRateMenuItem extends MenuItem {
+    /**
+     * Creates an instance of this class.
+     *
+     * @param { import('../../player').default } player
+     *        The `Player` that this class should be attached to.
+     *
+     * @param {Object} [options]
+     *        The key/value store of player options.
+     */
+    constructor(player, options) {
+      const label = options.rate;
+      const rate = parseFloat(label, 10);
+
+      // Modify options for parent MenuItem class's init.
+      options.label = label;
+      options.selected = rate === player.playbackRate();
+      options.selectable = true;
+      options.multiSelectable = false;
+      super(player, options);
+      this.label = label;
+      this.rate = rate;
+      this.on(player, 'ratechange', e => this.update(e));
+    }
+
+    /**
+     * This gets called when an `PlaybackRateMenuItem` is "clicked". See
+     * {@link ClickableComponent} for more detailed information on what a click can be.
+     *
+     * @param {Event} [event]
+     *        The `keydown`, `tap`, or `click` event that caused this function to be
+     *        called.
+     *
+     * @listens tap
+     * @listens click
+     */
+    handleClick(event) {
+      super.handleClick();
+      this.player().playbackRate(this.rate);
+    }
+
+    /**
+     * Update the PlaybackRateMenuItem when the playbackrate changes.
+     *
+     * @param {Event} [event]
+     *        The `ratechange` event that caused this function to run.
+     *
+     * @listens Player#ratechange
+     */
+    update(event) {
+      this.selected(this.player().playbackRate() === this.rate);
+    }
+  }
+
+  /**
+   * The text that should display over the `PlaybackRateMenuItem`s controls. Added for localization.
+   *
+   * @type {string}
+   * @private
+   */
+  PlaybackRateMenuItem.prototype.contentElType = 'button';
+  Component$1.registerComponent('PlaybackRateMenuItem', PlaybackRateMenuItem);
+
+  /**
+   * @file playback-rate-menu-button.js
+   */
+
+  /**
+   * The component for controlling the playback rate.
+   *
+   * @extends MenuButton
+   */
+  class PlaybackRateMenuButton extends MenuButton {
+    /**
+     * Creates an instance of this class.
+     *
+     * @param { import('../../player').default } player
+     *        The `Player` that this class should be attached to.
+     *
+     * @param {Object} [options]
+     *        The key/value store of player options.
+     */
+    constructor(player, options) {
+      super(player, options);
+      this.menuButton_.el_.setAttribute('aria-describedby', this.labelElId_);
+      this.updateVisibility();
+      this.updateLabel();
+      this.on(player, 'loadstart', e => this.updateVisibility(e));
+      this.on(player, 'ratechange', e => this.updateLabel(e));
+      this.on(player, 'playbackrateschange', e => this.handlePlaybackRateschange(e));
+    }
+
+    /**
+     * Create the `Component`'s DOM element
+     *
+     * @return {Element}
+     *         The element that was created.
+     */
+    createEl() {
+      const el = super.createEl();
+      this.labelElId_ = 'vjs-playback-rate-value-label-' + this.id_;
+      this.labelEl_ = createEl('div', {
+        className: 'vjs-playback-rate-value',
+        id: this.labelElId_,
+        textContent: '1x'
+      });
+      el.appendChild(this.labelEl_);
+      return el;
+    }
+    dispose() {
+      this.labelEl_ = null;
+      super.dispose();
+    }
+
+    /**
+     * Builds the default DOM `className`.
+     *
+     * @return {string}
+     *         The DOM `className` for this object.
+     */
+    buildCSSClass() {
+      return `vjs-playback-rate ${super.buildCSSClass()}`;
+    }
+    buildWrapperCSSClass() {
+      return `vjs-playback-rate ${super.buildWrapperCSSClass()}`;
+    }
+
+    /**
+     * Create the list of menu items. Specific to each subclass.
+     *
+     */
+    createItems() {
+      const rates = this.playbackRates();
+      const items = [];
+      for (let i = rates.length - 1; i >= 0; i--) {
+        items.push(new PlaybackRateMenuItem(this.player(), {
+          rate: rates[i] + 'x'
+        }));
+      }
+      return items;
+    }
+
+    /**
+     * On playbackrateschange, update the menu to account for the new items.
+     *
+     * @listens Player#playbackrateschange
+     */
+    handlePlaybackRateschange(event) {
+      this.update();
+    }
+
+    /**
+     * Get possible playback rates
+     *
+     * @return {Array}
+     *         All possible playback rates
+     */
+    playbackRates() {
+      const player = this.player();
+      return player.playbackRates && player.playbackRates() || [];
+    }
+
+    /**
+     * Get whether playback rates is supported by the tech
+     * and an array of playback rates exists
+     *
+     * @return {boolean}
+     *         Whether changing playback rate is supported
+     */
+    playbackRateSupported() {
+      return this.player().tech_ && this.player().tech_.featuresPlaybackRate && this.playbackRates() && this.playbackRates().length > 0;
+    }
+
+    /**
+     * Hide playback rate controls when they're no playback rate options to select
+     *
+     * @param {Event} [event]
+     *        The event that caused this function to run.
+     *
+     * @listens Player#loadstart
+     */
+    updateVisibility(event) {
+      if (this.playbackRateSupported()) {
+        this.removeClass('vjs-hidden');
+      } else {
+        this.addClass('vjs-hidden');
+      }
+    }
+
+    /**
+     * Update button label when rate changed
+     *
+     * @param {Event} [event]
+     *        The event that caused this function to run.
+     *
+     * @listens Player#ratechange
+     */
+    updateLabel(event) {
+      if (this.playbackRateSupported()) {
+        this.labelEl_.textContent = this.player().playbackRate() + 'x';
+      }
+    }
+  }
+
+  /**
+   * The text that should display over the `PlaybackRateMenuButton`s controls.
+   *
+   * Added for localization.
+   *
+   * @type {string}
+   * @protected
+   */
+  PlaybackRateMenuButton.prototype.controlText_ = 'Playback Rate';
+  Component$1.registerComponent('PlaybackRateMenuButton', PlaybackRateMenuButton);
+
+  /**
+   * @file spacer.js
+   */
+
+  /**
+   * Just an empty spacer element that can be used as an append point for plugins, etc.
+   * Also can be used to create space between elements when necessary.
+   *
+   * @extends Component
+   */
+  class Spacer extends Component$1 {
+    /**
+    * Builds the default DOM `className`.
+    *
+    * @return {string}
+    *         The DOM `className` for this object.
+    */
+    buildCSSClass() {
+      return `vjs-spacer ${super.buildCSSClass()}`;
+    }
+
+    /**
+     * Create the `Component`'s DOM element
+     *
+     * @return {Element}
+     *         The element that was created.
+     */
+    createEl(tag = 'div', props = {}, attributes = {}) {
+      if (!props.className) {
+        props.className = this.buildCSSClass();
+      }
+      return super.createEl(tag, props, attributes);
+    }
+  }
+  Component$1.registerComponent('Spacer', Spacer);
+
+  /**
+   * @file custom-control-spacer.js
+   */
+
+  /**
+   * Spacer specifically meant to be used as an insertion point for new plugins, etc.
+   *
+   * @extends Spacer
+   */
+  class CustomControlSpacer extends Spacer {
+    /**
+     * Builds the default DOM `className`.
+     *
+     * @return {string}
+     *         The DOM `className` for this object.
+     */
+    buildCSSClass() {
+      return `vjs-custom-control-spacer ${super.buildCSSClass()}`;
+    }
+
+    /**
+     * Create the `Component`'s DOM element
+     *
+     * @return {Element}
+     *         The element that was created.
+     */
+    createEl() {
+      return super.createEl('div', {
+        className: this.buildCSSClass(),
+        // No-flex/table-cell mode requires there be some content
+        // in the cell to fill the remaining space of the table.
+        textContent: '\u00a0'
+      });
+    }
+  }
+  Component$1.registerComponent('CustomControlSpacer', CustomControlSpacer);
+
+  /**
+   * @file control-bar.js
+   */
+
+  /**
+   * Container of main controls.
+   *
+   * @extends Component
+   */
+  class ControlBar extends Component$1 {
+    /**
+     * Create the `Component`'s DOM element
+     *
+     * @return {Element}
+     *         The element that was created.
+     */
+    createEl() {
+      return super.createEl('div', {
+        className: 'vjs-control-bar',
+        dir: 'ltr'
+      });
+    }
+  }
+
+  /**
+   * Default options for `ControlBar`
+   *
+   * @type {Object}
+   * @private
+   */
+  ControlBar.prototype.options_ = {
+    children: ['playToggle', 'skipBackward', 'skipForward', 'volumePanel', 'currentTimeDisplay', 'timeDivider', 'durationDisplay', 'progressControl', 'liveDisplay', 'seekToLive', 'remainingTimeDisplay', 'customControlSpacer', 'playbackRateMenuButton', 'chaptersButton', 'descriptionsButton', 'subsCapsButton', 'audioTrackButton', 'pictureInPictureToggle', 'fullscreenToggle']
+  };
+  Component$1.registerComponent('ControlBar', ControlBar);
+
+  /**
+   * @file error-display.js
+   */
+
+  /**
+   * A display that indicates an error has occurred. This means that the video
+   * is unplayable.
+   *
+   * @extends ModalDialog
+   */
+  class ErrorDisplay extends ModalDialog {
+    /**
+     * Creates an instance of this class.
+     *
+     * @param  { import('./player').default } player
+     *         The `Player` that this class should be attached to.
+     *
+     * @param  {Object} [options]
+     *         The key/value store of player options.
+     */
+    constructor(player, options) {
+      super(player, options);
+      this.on(player, 'error', e => {
+        this.open(e);
+      });
+    }
+
+    /**
+     * Builds the default DOM `className`.
+     *
+     * @return {string}
+     *         The DOM `className` for this object.
+     *
+     * @deprecated Since version 5.
+     */
+    buildCSSClass() {
+      return `vjs-error-display ${super.buildCSSClass()}`;
+    }
+
+    /**
+     * Gets the localized error message based on the `Player`s error.
+     *
+     * @return {string}
+     *         The `Player`s error message localized or an empty string.
+     */
+    content() {
+      const error = this.player().error();
+      return error ? this.localize(error.message) : '';
+    }
+  }
+
+  /**
+   * The default options for an `ErrorDisplay`.
+   *
+   * @private
+   */
+  ErrorDisplay.prototype.options_ = Object.assign({}, ModalDialog.prototype.options_, {
+    pauseOnOpen: false,
+    fillAlways: true,
+    temporary: false,
+    uncloseable: true
+  });
+  Component$1.registerComponent('ErrorDisplay', ErrorDisplay);
+
+  /**
+   * @file text-track-settings.js
+   */
+  const LOCAL_STORAGE_KEY$1 = 'vjs-text-track-settings';
+  const COLOR_BLACK = ['#000', 'Black'];
+  const COLOR_BLUE = ['#00F', 'Blue'];
+  const COLOR_CYAN = ['#0FF', 'Cyan'];
+  const COLOR_GREEN = ['#0F0', 'Green'];
+  const COLOR_MAGENTA = ['#F0F', 'Magenta'];
+  const COLOR_RED = ['#F00', 'Red'];
+  const COLOR_WHITE = ['#FFF', 'White'];
+  const COLOR_YELLOW = ['#FF0', 'Yellow'];
+  const OPACITY_OPAQUE = ['1', 'Opaque'];
+  const OPACITY_SEMI = ['0.5', 'Semi-Transparent'];
+  const OPACITY_TRANS = ['0', 'Transparent'];
+
+  // Configuration for the various <select> elements in the DOM of this component.
+  //
+  // Possible keys include:
+  //
+  // `default`:
+  //   The default option index. Only needs to be provided if not zero.
+  // `parser`:
+  //   A function which is used to parse the value from the selected option in
+  //   a customized way.
+  // `selector`:
+  //   The selector used to find the associated <select> element.
+  const selectConfigs = {
+    backgroundColor: {
+      selector: '.vjs-bg-color > select',
+      id: 'captions-background-color-%s',
+      label: 'Color',
+      options: [COLOR_BLACK, COLOR_WHITE, COLOR_RED, COLOR_GREEN, COLOR_BLUE, COLOR_YELLOW, COLOR_MAGENTA, COLOR_CYAN]
+    },
+    backgroundOpacity: {
+      selector: '.vjs-bg-opacity > select',
+      id: 'captions-background-opacity-%s',
+      label: 'Opacity',
+      options: [OPACITY_OPAQUE, OPACITY_SEMI, OPACITY_TRANS]
+    },
+    color: {
+      selector: '.vjs-text-color > select',
+      id: 'captions-foreground-color-%s',
+      label: 'Color',
+      options: [COLOR_WHITE, COLOR_BLACK, COLOR_RED, COLOR_GREEN, COLOR_BLUE, COLOR_YELLOW, COLOR_MAGENTA, COLOR_CYAN]
+    },
+    edgeStyle: {
+      selector: '.vjs-edge-style > select',
+      id: '%s',
+      label: 'Text Edge Style',
+      options: [['none', 'None'], ['raised', 'Raised'], ['depressed', 'Depressed'], ['uniform', 'Uniform'], ['dropshadow', 'Drop shadow']]
+    },
+    fontFamily: {
+      selector: '.vjs-font-family > select',
+      id: 'captions-font-family-%s',
+      label: 'Font Family',
+      options: [['proportionalSansSerif', 'Proportional Sans-Serif'], ['monospaceSansSerif', 'Monospace Sans-Serif'], ['proportionalSerif', 'Proportional Serif'], ['monospaceSerif', 'Monospace Serif'], ['casual', 'Casual'], ['script', 'Script'], ['small-caps', 'Small Caps']]
+    },
+    fontPercent: {
+      selector: '.vjs-font-percent > select',
+      id: 'captions-font-size-%s',
+      label: 'Font Size',
+      options: [['0.50', '50%'], ['0.75', '75%'], ['1.00', '100%'], ['1.25', '125%'], ['1.50', '150%'], ['1.75', '175%'], ['2.00', '200%'], ['3.00', '300%'], ['4.00', '400%']],
+      default: 2,
+      parser: v => v === '1.00' ? null : Number(v)
+    },
+    textOpacity: {
+      selector: '.vjs-text-opacity > select',
+      id: 'captions-foreground-opacity-%s',
+      label: 'Opacity',
+      options: [OPACITY_OPAQUE, OPACITY_SEMI]
+    },
+    // Options for this object are defined below.
+    windowColor: {
+      selector: '.vjs-window-color > select',
+      id: 'captions-window-color-%s',
+      label: 'Color'
+    },
+    // Options for this object are defined below.
+    windowOpacity: {
+      selector: '.vjs-window-opacity > select',
+      id: 'captions-window-opacity-%s',
+      label: 'Opacity',
+      options: [OPACITY_TRANS, OPACITY_SEMI, OPACITY_OPAQUE]
+    }
+  };
+  selectConfigs.windowColor.options = selectConfigs.backgroundColor.options;
+
+  /**
+   * Get the actual value of an option.
+   *
+   * @param  {string} value
+   *         The value to get
+   *
+   * @param  {Function} [parser]
+   *         Optional function to adjust the value.
+   *
+   * @return {*}
+   *         - Will be `undefined` if no value exists
+   *         - Will be `undefined` if the given value is "none".
+   *         - Will be the actual value otherwise.
+   *
+   * @private
+   */
+  function parseOptionValue(value, parser) {
+    if (parser) {
+      value = parser(value);
+    }
+    if (value && value !== 'none') {
+      return value;
+    }
+  }
+
+  /**
+   * Gets the value of the selected <option> element within a <select> element.
+   *
+   * @param  {Element} el
+   *         the element to look in
+   *
+   * @param  {Function} [parser]
+   *         Optional function to adjust the value.
+   *
+   * @return {*}
+   *         - Will be `undefined` if no value exists
+   *         - Will be `undefined` if the given value is "none".
+   *         - Will be the actual value otherwise.
+   *
+   * @private
+   */
+  function getSelectedOptionValue(el, parser) {
+    const value = el.options[el.options.selectedIndex].value;
+    return parseOptionValue(value, parser);
+  }
+
+  /**
+   * Sets the selected <option> element within a <select> element based on a
+   * given value.
+   *
+   * @param {Element} el
+   *        The element to look in.
+   *
+   * @param {string} value
+   *        the property to look on.
+   *
+   * @param {Function} [parser]
+   *        Optional function to adjust the value before comparing.
+   *
+   * @private
+   */
+  function setSelectedOption(el, value, parser) {
+    if (!value) {
+      return;
+    }
+    for (let i = 0; i < el.options.length; i++) {
+      if (parseOptionValue(el.options[i].value, parser) === value) {
+        el.selectedIndex = i;
+        break;
+      }
+    }
+  }
+
+  /**
+   * Manipulate Text Tracks settings.
+   *
+   * @extends ModalDialog
+   */
+  class TextTrackSettings extends ModalDialog {
+    /**
+     * Creates an instance of this class.
+     *
+     * @param { import('../player').default } player
+     *         The `Player` that this class should be attached to.
+     *
+     * @param {Object} [options]
+     *         The key/value store of player options.
+     */
+    constructor(player, options) {
+      options.temporary = false;
+      super(player, options);
+      this.updateDisplay = this.updateDisplay.bind(this);
+
+      // fill the modal and pretend we have opened it
+      this.fill();
+      this.hasBeenOpened_ = this.hasBeenFilled_ = true;
+      this.endDialog = createEl('p', {
+        className: 'vjs-control-text',
+        textContent: this.localize('End of dialog window.')
+      });
+      this.el().appendChild(this.endDialog);
+      this.setDefaults();
+
+      // Grab `persistTextTrackSettings` from the player options if not passed in child options
+      if (options.persistTextTrackSettings === undefined) {
+        this.options_.persistTextTrackSettings = this.options_.playerOptions.persistTextTrackSettings;
+      }
+      this.on(this.$('.vjs-done-button'), 'click', () => {
+        this.saveSettings();
+        this.close();
+      });
+      this.on(this.$('.vjs-default-button'), 'click', () => {
+        this.setDefaults();
+        this.updateDisplay();
+      });
+      each(selectConfigs, config => {
+        this.on(this.$(config.selector), 'change', this.updateDisplay);
+      });
+      if (this.options_.persistTextTrackSettings) {
+        this.restoreSettings();
+      }
+    }
+    dispose() {
+      this.endDialog = null;
+      super.dispose();
+    }
+
+    /**
+     * Create a <select> element with configured options.
+     *
+     * @param {string} key
+     *        Configuration key to use during creation.
+     *
+     * @param {string} [legendId]
+     *        Id of associated <legend>.
+     *
+     * @param {string} [type=label]
+     *        Type of labelling element, `label` or `legend`
+     *
+     * @return {string}
+     *         An HTML string.
+     *
+     * @private
+     */
+    createElSelect_(key, legendId = '', type = 'label') {
+      const config = selectConfigs[key];
+      const id = config.id.replace('%s', this.id_);
+      const selectLabelledbyIds = [legendId, id].join(' ').trim();
+      const guid = `vjs_select_${newGUID()}`;
+      return [`<${type} id="${id}"${type === 'label' ? ` for="${guid}" class="vjs-label"` : ''}>`, this.localize(config.label), `</${type}>`, `<select aria-labelledby="${selectLabelledbyIds}" id="${guid}">`].concat(config.options.map(o => {
+        const optionId = id + '-' + o[1].replace(/\W+/g, '');
+        return [`<option id="${optionId}" value="${o[0]}" `, `aria-labelledby="${selectLabelledbyIds} ${optionId}">`, this.localize(o[1]), '</option>'].join('');
+      })).concat('</select>').join('');
+    }
+
+    /**
+     * Create foreground color element for the component
+     *
+     * @return {string}
+     *         An HTML string.
+     *
+     * @private
+     */
+    createElFgColor_() {
+      const legendId = `captions-text-legend-${this.id_}`;
+      return ['<fieldset class="vjs-fg vjs-track-setting">', `<legend id="${legendId}">`, this.localize('Text'), '</legend>', '<span class="vjs-text-color">', this.createElSelect_('color', legendId), '</span>', '<span class="vjs-text-opacity vjs-opacity">', this.createElSelect_('textOpacity', legendId), '</span>', '</fieldset>'].join('');
+    }
+
+    /**
+     * Create background color element for the component
+     *
+     * @return {string}
+     *         An HTML string.
+     *
+     * @private
+     */
+    createElBgColor_() {
+      const legendId = `captions-background-${this.id_}`;
+      return ['<fieldset class="vjs-bg vjs-track-setting">', `<legend id="${legendId}">`, this.localize('Text Background'), '</legend>', '<span class="vjs-bg-color">', this.createElSelect_('backgroundColor', legendId), '</span>', '<span class="vjs-bg-opacity vjs-opacity">', this.createElSelect_('backgroundOpacity', legendId), '</span>', '</fieldset>'].join('');
+    }
+
+    /**
+     * Create window color element for the component
+     *
+     * @return {string}
+     *         An HTML string.
+     *
+     * @private
+     */
+    createElWinColor_() {
+      const legendId = `captions-window-${this.id_}`;
+      return ['<fieldset class="vjs-window vjs-track-setting">', `<legend id="${legendId}">`, this.localize('Caption Area Background'), '</legend>', '<span class="vjs-window-color">', this.createElSelect_('windowColor', legendId), '</span>', '<span class="vjs-window-opacity vjs-opacity">', this.createElSelect_('windowOpacity', legendId), '</span>', '</fieldset>'].join('');
+    }
+
+    /**
+     * Create color elements for the component
+     *
+     * @return {Element}
+     *         The element that was created
+     *
+     * @private
+     */
+    createElColors_() {
+      return createEl('div', {
+        className: 'vjs-track-settings-colors',
+        innerHTML: [this.createElFgColor_(), this.createElBgColor_(), this.createElWinColor_()].join('')
+      });
+    }
+
+    /**
+     * Create font elements for the component
+     *
+     * @return {Element}
+     *         The element that was created.
+     *
+     * @private
+     */
+    createElFont_() {
+      return createEl('div', {
+        className: 'vjs-track-settings-font',
+        innerHTML: ['<fieldset class="vjs-font-percent vjs-track-setting">', this.createElSelect_('fontPercent', '', 'legend'), '</fieldset>', '<fieldset class="vjs-edge-style vjs-track-setting">', this.createElSelect_('edgeStyle', '', 'legend'), '</fieldset>', '<fieldset class="vjs-font-family vjs-track-setting">', this.createElSelect_('fontFamily', '', 'legend'), '</fieldset>'].join('')
+      });
+    }
+
+    /**
+     * Create controls for the component
+     *
+     * @return {Element}
+     *         The element that was created.
+     *
+     * @private
+     */
+    createElControls_() {
+      const defaultsDescription = this.localize('restore all settings to the default values');
+      return createEl('div', {
+        className: 'vjs-track-settings-controls',
+        innerHTML: [`<button type="button" class="vjs-default-button" title="${defaultsDescription}">`, this.localize('Reset'), `<span class="vjs-control-text"> ${defaultsDescription}</span>`, '</button>', `<button type="button" class="vjs-done-button">${this.localize('Done')}</button>`].join('')
+      });
+    }
+    content() {
+      return [this.createElColors_(), this.createElFont_(), this.createElControls_()];
+    }
+    label() {
+      return this.localize('Caption Settings Dialog');
+    }
+    description() {
+      return this.localize('Beginning of dialog window. Escape will cancel and close the window.');
+    }
+    buildCSSClass() {
+      return super.buildCSSClass() + ' vjs-text-track-settings';
+    }
+
+    /**
+     * Gets an object of text track settings (or null).
+     *
+     * @return {Object}
+     *         An object with config values parsed from the DOM or localStorage.
+     */
+    getValues() {
+      return reduce(selectConfigs, (accum, config, key) => {
+        const value = getSelectedOptionValue(this.$(config.selector), config.parser);
+        if (value !== undefined) {
+          accum[key] = value;
+        }
+        return accum;
+      }, {});
+    }
+
+    /**
+     * Sets text track settings from an object of values.
+     *
+     * @param {Object} values
+     *        An object with config values parsed from the DOM or localStorage.
+     */
+    setValues(values) {
+      each(selectConfigs, (config, key) => {
+        setSelectedOption(this.$(config.selector), values[key], config.parser);
+      });
+    }
+
+    /**
+     * Sets all `<select>` elements to their default values.
+     */
+    setDefaults() {
+      each(selectConfigs, config => {
+        const index = config.hasOwnProperty('default') ? config.default : 0;
+        this.$(config.selector).selectedIndex = index;
+      });
+    }
+
+    /**
+     * Restore texttrack settings from localStorage
+     */
+    restoreSettings() {
+      let values;
+      try {
+        values = JSON.parse(window.localStorage.getItem(LOCAL_STORAGE_KEY$1));
+      } catch (err) {
+        log$1.warn(err);
+      }
+      if (values) {
+        this.setValues(values);
+      }
+    }
+
+    /**
+     * Save text track settings to localStorage
+     */
+    saveSettings() {
+      if (!this.options_.persistTextTrackSettings) {
+        return;
+      }
+      const values = this.getValues();
+      try {
+        if (Object.keys(values).length) {
+          window.localStorage.setItem(LOCAL_STORAGE_KEY$1, JSON.stringify(values));
+        } else {
+          window.localStorage.removeItem(LOCAL_STORAGE_KEY$1);
+        }
+      } catch (err) {
+        log$1.warn(err);
+      }
+    }
+
+    /**
+     * Update display of text track settings
+     */
+    updateDisplay() {
+      const ttDisplay = this.player_.getChild('textTrackDisplay');
+      if (ttDisplay) {
+        ttDisplay.updateDisplay();
+      }
+    }
+
+    /**
+     * conditionally blur the element and refocus the captions button
+     *
+     * @private
+     */
+    conditionalBlur_() {
+      this.previouslyActiveEl_ = null;
+      const cb = this.player_.controlBar;
+      const subsCapsBtn = cb && cb.subsCapsButton;
+      const ccBtn = cb && cb.captionsButton;
+      if (subsCapsBtn) {
+        subsCapsBtn.focus();
+      } else if (ccBtn) {
+        ccBtn.focus();
+      }
+    }
+
+    /**
+     * Repopulate dialog with new localizations on languagechange
+     */
+    handleLanguagechange() {
+      this.fill();
+    }
+  }
+  Component$1.registerComponent('TextTrackSettings', TextTrackSettings);
+
+  /**
+   * @file resize-manager.js
+   */
+
+  /**
+   * A Resize Manager. It is in charge of triggering `playerresize` on the player in the right conditions.
+   *
+   * It'll either create an iframe and use a debounced resize handler on it or use the new {@link https://wicg.github.io/ResizeObserver/|ResizeObserver}.
+   *
+   * If the ResizeObserver is available natively, it will be used. A polyfill can be passed in as an option.
+   * If a `playerresize` event is not needed, the ResizeManager component can be removed from the player, see the example below.
+   *
+   * @example <caption>How to disable the resize manager</caption>
+   * const player = videojs('#vid', {
+   *   resizeManager: false
+   * });
+   *
+   * @see {@link https://wicg.github.io/ResizeObserver/|ResizeObserver specification}
+   *
+   * @extends Component
+   */
+  class ResizeManager extends Component$1 {
+    /**
+     * Create the ResizeManager.
+     *
+     * @param {Object} player
+     *        The `Player` that this class should be attached to.
+     *
+     * @param {Object} [options]
+     *        The key/value store of ResizeManager options.
+     *
+     * @param {Object} [options.ResizeObserver]
+     *        A polyfill for ResizeObserver can be passed in here.
+     *        If this is set to null it will ignore the native ResizeObserver and fall back to the iframe fallback.
+     */
+    constructor(player, options) {
+      let RESIZE_OBSERVER_AVAILABLE = options.ResizeObserver || window.ResizeObserver;
+
+      // if `null` was passed, we want to disable the ResizeObserver
+      if (options.ResizeObserver === null) {
+        RESIZE_OBSERVER_AVAILABLE = false;
+      }
+
+      // Only create an element when ResizeObserver isn't available
+      const options_ = merge$2({
+        createEl: !RESIZE_OBSERVER_AVAILABLE,
+        reportTouchActivity: false
+      }, options);
+      super(player, options_);
+      this.ResizeObserver = options.ResizeObserver || window.ResizeObserver;
+      this.loadListener_ = null;
+      this.resizeObserver_ = null;
+      this.debouncedHandler_ = debounce(() => {
+        this.resizeHandler();
+      }, 100, false, this);
+      if (RESIZE_OBSERVER_AVAILABLE) {
+        this.resizeObserver_ = new this.ResizeObserver(this.debouncedHandler_);
+        this.resizeObserver_.observe(player.el());
+      } else {
+        this.loadListener_ = () => {
+          if (!this.el_ || !this.el_.contentWindow) {
+            return;
+          }
+          const debouncedHandler_ = this.debouncedHandler_;
+          let unloadListener_ = this.unloadListener_ = function () {
+            off(this, 'resize', debouncedHandler_);
+            off(this, 'unload', unloadListener_);
+            unloadListener_ = null;
+          };
+
+          // safari and edge can unload the iframe before resizemanager dispose
+          // we have to dispose of event handlers correctly before that happens
+          on(this.el_.contentWindow, 'unload', unloadListener_);
+          on(this.el_.contentWindow, 'resize', debouncedHandler_);
+        };
+        this.one('load', this.loadListener_);
+      }
+    }
+    createEl() {
+      return super.createEl('iframe', {
+        className: 'vjs-resize-manager',
+        tabIndex: -1,
+        title: this.localize('No content')
+      }, {
+        'aria-hidden': 'true'
+      });
+    }
+
+    /**
+     * Called when a resize is triggered on the iframe or a resize is observed via the ResizeObserver
+     *
+     * @fires Player#playerresize
+     */
+    resizeHandler() {
+      /**
+       * Called when the player size has changed
+       *
+       * @event Player#playerresize
+       * @type {Event}
+       */
+      // make sure player is still around to trigger
+      // prevents this from causing an error after dispose
+      if (!this.player_ || !this.player_.trigger) {
+        return;
+      }
+      this.player_.trigger('playerresize');
+    }
+    dispose() {
+      if (this.debouncedHandler_) {
+        this.debouncedHandler_.cancel();
+      }
+      if (this.resizeObserver_) {
+        if (this.player_.el()) {
+          this.resizeObserver_.unobserve(this.player_.el());
+        }
+        this.resizeObserver_.disconnect();
+      }
+      if (this.loadListener_) {
+        this.off('load', this.loadListener_);
+      }
+      if (this.el_ && this.el_.contentWindow && this.unloadListener_) {
+        this.unloadListener_.call(this.el_.contentWindow);
+      }
+      this.ResizeObserver = null;
+      this.resizeObserver = null;
+      this.debouncedHandler_ = null;
+      this.loadListener_ = null;
+      super.dispose();
+    }
+  }
+  Component$1.registerComponent('ResizeManager', ResizeManager);
+
+  const defaults = {
+    trackingThreshold: 20,
+    liveTolerance: 15
+  };
+
+  /*
+    track when we are at the live edge, and other helpers for live playback */
+
+  /**
+   * A class for checking live current time and determining when the player
+   * is at or behind the live edge.
+   */
+  class LiveTracker extends Component$1 {
+    /**
+     * Creates an instance of this class.
+     *
+     * @param { import('./player').default } player
+     *        The `Player` that this class should be attached to.
+     *
+     * @param {Object} [options]
+     *        The key/value store of player options.
+     *
+     * @param {number} [options.trackingThreshold=20]
+     *        Number of seconds of live window (seekableEnd - seekableStart) that
+     *        media needs to have before the liveui will be shown.
+     *
+     * @param {number} [options.liveTolerance=15]
+     *        Number of seconds behind live that we have to be
+     *        before we will be considered non-live. Note that this will only
+     *        be used when playing at the live edge. This allows large seekable end
+     *        changes to not effect whether we are live or not.
+     */
+    constructor(player, options) {
+      // LiveTracker does not need an element
+      const options_ = merge$2(defaults, options, {
+        createEl: false
+      });
+      super(player, options_);
+      this.trackLiveHandler_ = () => this.trackLive_();
+      this.handlePlay_ = e => this.handlePlay(e);
+      this.handleFirstTimeupdate_ = e => this.handleFirstTimeupdate(e);
+      this.handleSeeked_ = e => this.handleSeeked(e);
+      this.seekToLiveEdge_ = e => this.seekToLiveEdge(e);
+      this.reset_();
+      this.on(this.player_, 'durationchange', e => this.handleDurationchange(e));
+      // we should try to toggle tracking on canplay as native playback engines, like Safari
+      // may not have the proper values for things like seekableEnd until then
+      this.on(this.player_, 'canplay', () => this.toggleTracking());
+    }
+
+    /**
+     * all the functionality for tracking when seek end changes
+     * and for tracking how far past seek end we should be
+     */
+    trackLive_() {
+      const seekable = this.player_.seekable();
+
+      // skip undefined seekable
+      if (!seekable || !seekable.length) {
+        return;
+      }
+      const newTime = Number(window.performance.now().toFixed(4));
+      const deltaTime = this.lastTime_ === -1 ? 0 : (newTime - this.lastTime_) / 1000;
+      this.lastTime_ = newTime;
+      this.pastSeekEnd_ = this.pastSeekEnd() + deltaTime;
+      const liveCurrentTime = this.liveCurrentTime();
+      const currentTime = this.player_.currentTime();
+
+      // we are behind live if any are true
+      // 1. the player is paused
+      // 2. the user seeked to a location 2 seconds away from live
+      // 3. the difference between live and current time is greater
+      //    liveTolerance which defaults to 15s
+      let isBehind = this.player_.paused() || this.seekedBehindLive_ || Math.abs(liveCurrentTime - currentTime) > this.options_.liveTolerance;
+
+      // we cannot be behind if
+      // 1. until we have not seen a timeupdate yet
+      // 2. liveCurrentTime is Infinity, which happens on Android and Native Safari
+      if (!this.timeupdateSeen_ || liveCurrentTime === Infinity) {
+        isBehind = false;
+      }
+      if (isBehind !== this.behindLiveEdge_) {
+        this.behindLiveEdge_ = isBehind;
+        this.trigger('liveedgechange');
+      }
+    }
+
+    /**
+     * handle a durationchange event on the player
+     * and start/stop tracking accordingly.
+     */
+    handleDurationchange() {
+      this.toggleTracking();
+    }
+
+    /**
+     * start/stop tracking
+     */
+    toggleTracking() {
+      if (this.player_.duration() === Infinity && this.liveWindow() >= this.options_.trackingThreshold) {
+        if (this.player_.options_.liveui) {
+          this.player_.addClass('vjs-liveui');
+        }
+        this.startTracking();
+      } else {
+        this.player_.removeClass('vjs-liveui');
+        this.stopTracking();
+      }
+    }
+
+    /**
+     * start tracking live playback
+     */
+    startTracking() {
+      if (this.isTracking()) {
+        return;
+      }
+
+      // If we haven't seen a timeupdate, we need to check whether playback
+      // began before this component started tracking. This can happen commonly
+      // when using autoplay.
+      if (!this.timeupdateSeen_) {
+        this.timeupdateSeen_ = this.player_.hasStarted();
+      }
+      this.trackingInterval_ = this.setInterval(this.trackLiveHandler_, UPDATE_REFRESH_INTERVAL);
+      this.trackLive_();
+      this.on(this.player_, ['play', 'pause'], this.trackLiveHandler_);
+      if (!this.timeupdateSeen_) {
+        this.one(this.player_, 'play', this.handlePlay_);
+        this.one(this.player_, 'timeupdate', this.handleFirstTimeupdate_);
+      } else {
+        this.on(this.player_, 'seeked', this.handleSeeked_);
+      }
+    }
+
+    /**
+     * handle the first timeupdate on the player if it wasn't already playing
+     * when live tracker started tracking.
+     */
+    handleFirstTimeupdate() {
+      this.timeupdateSeen_ = true;
+      this.on(this.player_, 'seeked', this.handleSeeked_);
+    }
+
+    /**
+     * Keep track of what time a seek starts, and listen for seeked
+     * to find where a seek ends.
+     */
+    handleSeeked() {
+      const timeDiff = Math.abs(this.liveCurrentTime() - this.player_.currentTime());
+      this.seekedBehindLive_ = this.nextSeekedFromUser_ && timeDiff > 2;
+      this.nextSeekedFromUser_ = false;
+      this.trackLive_();
+    }
+
+    /**
+     * handle the first play on the player, and make sure that we seek
+     * right to the live edge.
+     */
+    handlePlay() {
+      this.one(this.player_, 'timeupdate', this.seekToLiveEdge_);
+    }
+
+    /**
+     * Stop tracking, and set all internal variables to
+     * their initial value.
+     */
+    reset_() {
+      this.lastTime_ = -1;
+      this.pastSeekEnd_ = 0;
+      this.lastSeekEnd_ = -1;
+      this.behindLiveEdge_ = true;
+      this.timeupdateSeen_ = false;
+      this.seekedBehindLive_ = false;
+      this.nextSeekedFromUser_ = false;
+      this.clearInterval(this.trackingInterval_);
+      this.trackingInterval_ = null;
+      this.off(this.player_, ['play', 'pause'], this.trackLiveHandler_);
+      this.off(this.player_, 'seeked', this.handleSeeked_);
+      this.off(this.player_, 'play', this.handlePlay_);
+      this.off(this.player_, 'timeupdate', this.handleFirstTimeupdate_);
+      this.off(this.player_, 'timeupdate', this.seekToLiveEdge_);
+    }
+
+    /**
+     * The next seeked event is from the user. Meaning that any seek
+     * > 2s behind live will be considered behind live for real and
+     * liveTolerance will be ignored.
+     */
+    nextSeekedFromUser() {
+      this.nextSeekedFromUser_ = true;
+    }
+
+    /**
+     * stop tracking live playback
+     */
+    stopTracking() {
+      if (!this.isTracking()) {
+        return;
+      }
+      this.reset_();
+      this.trigger('liveedgechange');
+    }
+
+    /**
+     * A helper to get the player seekable end
+     * so that we don't have to null check everywhere
+     *
+     * @return {number}
+     *         The furthest seekable end or Infinity.
+     */
+    seekableEnd() {
+      const seekable = this.player_.seekable();
+      const seekableEnds = [];
+      let i = seekable ? seekable.length : 0;
+      while (i--) {
+        seekableEnds.push(seekable.end(i));
+      }
+
+      // grab the furthest seekable end after sorting, or if there are none
+      // default to Infinity
+      return seekableEnds.length ? seekableEnds.sort()[seekableEnds.length - 1] : Infinity;
+    }
+
+    /**
+     * A helper to get the player seekable start
+     * so that we don't have to null check everywhere
+     *
+     * @return {number}
+     *         The earliest seekable start or 0.
+     */
+    seekableStart() {
+      const seekable = this.player_.seekable();
+      const seekableStarts = [];
+      let i = seekable ? seekable.length : 0;
+      while (i--) {
+        seekableStarts.push(seekable.start(i));
+      }
+
+      // grab the first seekable start after sorting, or if there are none
+      // default to 0
+      return seekableStarts.length ? seekableStarts.sort()[0] : 0;
+    }
+
+    /**
+     * Get the live time window aka
+     * the amount of time between seekable start and
+     * live current time.
+     *
+     * @return {number}
+     *         The amount of seconds that are seekable in
+     *         the live video.
+     */
+    liveWindow() {
+      const liveCurrentTime = this.liveCurrentTime();
+
+      // if liveCurrenTime is Infinity then we don't have a liveWindow at all
+      if (liveCurrentTime === Infinity) {
+        return 0;
+      }
+      return liveCurrentTime - this.seekableStart();
+    }
+
+    /**
+     * Determines if the player is live, only checks if this component
+     * is tracking live playback or not
+     *
+     * @return {boolean}
+     *         Whether liveTracker is tracking
+     */
+    isLive() {
+      return this.isTracking();
+    }
+
+    /**
+     * Determines if currentTime is at the live edge and won't fall behind
+     * on each seekableendchange
+     *
+     * @return {boolean}
+     *         Whether playback is at the live edge
+     */
+    atLiveEdge() {
+      return !this.behindLiveEdge();
+    }
+
+    /**
+     * get what we expect the live current time to be
+     *
+     * @return {number}
+     *         The expected live current time
+     */
+    liveCurrentTime() {
+      return this.pastSeekEnd() + this.seekableEnd();
+    }
+
+    /**
+     * The number of seconds that have occurred after seekable end
+     * changed. This will be reset to 0 once seekable end changes.
+     *
+     * @return {number}
+     *         Seconds past the current seekable end
+     */
+    pastSeekEnd() {
+      const seekableEnd = this.seekableEnd();
+      if (this.lastSeekEnd_ !== -1 && seekableEnd !== this.lastSeekEnd_) {
+        this.pastSeekEnd_ = 0;
+      }
+      this.lastSeekEnd_ = seekableEnd;
+      return this.pastSeekEnd_;
+    }
+
+    /**
+     * If we are currently behind the live edge, aka currentTime will be
+     * behind on a seekableendchange
+     *
+     * @return {boolean}
+     *         If we are behind the live edge
+     */
+    behindLiveEdge() {
+      return this.behindLiveEdge_;
+    }
+
+    /**
+     * Whether live tracker is currently tracking or not.
+     */
+    isTracking() {
+      return typeof this.trackingInterval_ === 'number';
+    }
+
+    /**
+     * Seek to the live edge if we are behind the live edge
+     */
+    seekToLiveEdge() {
+      this.seekedBehindLive_ = false;
+      if (this.atLiveEdge()) {
+        return;
+      }
+      this.nextSeekedFromUser_ = false;
+      this.player_.currentTime(this.liveCurrentTime());
+    }
+
+    /**
+     * Dispose of liveTracker
+     */
+    dispose() {
+      this.stopTracking();
+      super.dispose();
+    }
+  }
+  Component$1.registerComponent('LiveTracker', LiveTracker);
+
+  /**
+   * Displays an element over the player which contains an optional title and
+   * description for the current content.
+   *
+   * Much of the code for this component originated in the now obsolete
+   * videojs-dock plugin: https://github.com/brightcove/videojs-dock/
+   *
+   * @extends Component
+   */
+  class TitleBar extends Component$1 {
+    constructor(player, options) {
+      super(player, options);
+      this.on('statechanged', e => this.updateDom_());
+      this.updateDom_();
+    }
+
+    /**
+     * Create the `TitleBar`'s DOM element
+     *
+     * @return {Element}
+     *         The element that was created.
+     */
+    createEl() {
+      this.els = {
+        title: createEl('div', {
+          className: 'vjs-title-bar-title',
+          id: `vjs-title-bar-title-${newGUID()}`
+        }),
+        description: createEl('div', {
+          className: 'vjs-title-bar-description',
+          id: `vjs-title-bar-description-${newGUID()}`
+        })
+      };
+      return createEl('div', {
+        className: 'vjs-title-bar'
+      }, {}, values$1(this.els));
+    }
+
+    /**
+     * Updates the DOM based on the component's state object.
+     */
+    updateDom_() {
+      const tech = this.player_.tech_;
+      const techEl = tech && tech.el_;
+      const techAriaAttrs = {
+        title: 'aria-labelledby',
+        description: 'aria-describedby'
+      };
+      ['title', 'description'].forEach(k => {
+        const value = this.state[k];
+        const el = this.els[k];
+        const techAriaAttr = techAriaAttrs[k];
+        emptyEl(el);
+        if (value) {
+          textContent(el, value);
+        }
+
+        // If there is a tech element available, update its ARIA attributes
+        // according to whether a title and/or description have been provided.
+        if (techEl) {
+          techEl.removeAttribute(techAriaAttr);
+          if (value) {
+            techEl.setAttribute(techAriaAttr, el.id);
+          }
+        }
+      });
+      if (this.state.title || this.state.description) {
+        this.show();
+      } else {
+        this.hide();
+      }
+    }
+
+    /**
+     * Update the contents of the title bar component with new title and
+     * description text.
+     *
+     * If both title and description are missing, the title bar will be hidden.
+     *
+     * If either title or description are present, the title bar will be visible.
+     *
+     * NOTE: Any previously set value will be preserved. To unset a previously
+     * set value, you must pass an empty string or null.
+     *
+     * For example:
+     *
+     * ```
+     * update({title: 'foo', description: 'bar'}) // title: 'foo', description: 'bar'
+     * update({description: 'bar2'}) // title: 'foo', description: 'bar2'
+     * update({title: ''}) // title: '', description: 'bar2'
+     * update({title: 'foo', description: null}) // title: 'foo', description: null
+     * ```
+     *
+     * @param  {Object} [options={}]
+     *         An options object. When empty, the title bar will be hidden.
+     *
+     * @param  {string} [options.title]
+     *         A title to display in the title bar.
+     *
+     * @param  {string} [options.description]
+     *         A description to display in the title bar.
+     */
+    update(options) {
+      this.setState(options);
+    }
+
+    /**
+     * Dispose the component.
+     */
+    dispose() {
+      const tech = this.player_.tech_;
+      const techEl = tech && tech.el_;
+      if (techEl) {
+        techEl.removeAttribute('aria-labelledby');
+        techEl.removeAttribute('aria-describedby');
+      }
+      super.dispose();
+      this.els = null;
+    }
+  }
+  Component$1.registerComponent('TitleBar', TitleBar);
+
+  /**
+   * This function is used to fire a sourceset when there is something
+   * similar to `mediaEl.load()` being called. It will try to find the source via
+   * the `src` attribute and then the `<source>` elements. It will then fire `sourceset`
+   * with the source that was found or empty string if we cannot know. If it cannot
+   * find a source then `sourceset` will not be fired.
+   *
+   * @param { import('./html5').default } tech
+   *        The tech object that sourceset was setup on
+   *
+   * @return {boolean}
+   *         returns false if the sourceset was not fired and true otherwise.
+   */
+  const sourcesetLoad = tech => {
+    const el = tech.el();
+
+    // if `el.src` is set, that source will be loaded.
+    if (el.hasAttribute('src')) {
+      tech.triggerSourceset(el.src);
+      return true;
+    }
+
+    /**
+     * Since there isn't a src property on the media element, source elements will be used for
+     * implementing the source selection algorithm. This happens asynchronously and
+     * for most cases were there is more than one source we cannot tell what source will
+     * be loaded, without re-implementing the source selection algorithm. At this time we are not
+     * going to do that. There are three special cases that we do handle here though:
+     *
+     * 1. If there are no sources, do not fire `sourceset`.
+     * 2. If there is only one `<source>` with a `src` property/attribute that is our `src`
+     * 3. If there is more than one `<source>` but all of them have the same `src` url.
+     *    That will be our src.
+     */
+    const sources = tech.$$('source');
+    const srcUrls = [];
+    let src = '';
+
+    // if there are no sources, do not fire sourceset
+    if (!sources.length) {
+      return false;
+    }
+
+    // only count valid/non-duplicate source elements
+    for (let i = 0; i < sources.length; i++) {
+      const url = sources[i].src;
+      if (url && srcUrls.indexOf(url) === -1) {
+        srcUrls.push(url);
+      }
+    }
+
+    // there were no valid sources
+    if (!srcUrls.length) {
+      return false;
+    }
+
+    // there is only one valid source element url
+    // use that
+    if (srcUrls.length === 1) {
+      src = srcUrls[0];
+    }
+    tech.triggerSourceset(src);
+    return true;
+  };
+
+  /**
+   * our implementation of an `innerHTML` descriptor for browsers
+   * that do not have one.
+   */
+  const innerHTMLDescriptorPolyfill = Object.defineProperty({}, 'innerHTML', {
+    get() {
+      return this.cloneNode(true).innerHTML;
+    },
+    set(v) {
+      // make a dummy node to use innerHTML on
+      const dummy = document.createElement(this.nodeName.toLowerCase());
+
+      // set innerHTML to the value provided
+      dummy.innerHTML = v;
+
+      // make a document fragment to hold the nodes from dummy
+      const docFrag = document.createDocumentFragment();
+
+      // copy all of the nodes created by the innerHTML on dummy
+      // to the document fragment
+      while (dummy.childNodes.length) {
+        docFrag.appendChild(dummy.childNodes[0]);
+      }
+
+      // remove content
+      this.innerText = '';
+
+      // now we add all of that html in one by appending the
+      // document fragment. This is how innerHTML does it.
+      window.Element.prototype.appendChild.call(this, docFrag);
+
+      // then return the result that innerHTML's setter would
+      return this.innerHTML;
+    }
+  });
+
+  /**
+   * Get a property descriptor given a list of priorities and the
+   * property to get.
+   */
+  const getDescriptor = (priority, prop) => {
+    let descriptor = {};
+    for (let i = 0; i < priority.length; i++) {
+      descriptor = Object.getOwnPropertyDescriptor(priority[i], prop);
+      if (descriptor && descriptor.set && descriptor.get) {
+        break;
+      }
+    }
+    descriptor.enumerable = true;
+    descriptor.configurable = true;
+    return descriptor;
+  };
+  const getInnerHTMLDescriptor = tech => getDescriptor([tech.el(), window.HTMLMediaElement.prototype, window.Element.prototype, innerHTMLDescriptorPolyfill], 'innerHTML');
+
+  /**
+   * Patches browser internal functions so that we can tell synchronously
+   * if a `<source>` was appended to the media element. For some reason this
+   * causes a `sourceset` if the the media element is ready and has no source.
+   * This happens when:
+   * - The page has just loaded and the media element does not have a source.
+   * - The media element was emptied of all sources, then `load()` was called.
+   *
+   * It does this by patching the following functions/properties when they are supported:
+   *
+   * - `append()` - can be used to add a `<source>` element to the media element
+   * - `appendChild()` - can be used to add a `<source>` element to the media element
+   * - `insertAdjacentHTML()` -  can be used to add a `<source>` element to the media element
+   * - `innerHTML` -  can be used to add a `<source>` element to the media element
+   *
+   * @param {Html5} tech
+   *        The tech object that sourceset is being setup on.
+   */
+  const firstSourceWatch = function (tech) {
+    const el = tech.el();
+
+    // make sure firstSourceWatch isn't setup twice.
+    if (el.resetSourceWatch_) {
+      return;
+    }
+    const old = {};
+    const innerDescriptor = getInnerHTMLDescriptor(tech);
+    const appendWrapper = appendFn => (...args) => {
+      const retval = appendFn.apply(el, args);
+      sourcesetLoad(tech);
+      return retval;
+    };
+    ['append', 'appendChild', 'insertAdjacentHTML'].forEach(k => {
+      if (!el[k]) {
+        return;
+      }
+
+      // store the old function
+      old[k] = el[k];
+
+      // call the old function with a sourceset if a source
+      // was loaded
+      el[k] = appendWrapper(old[k]);
+    });
+    Object.defineProperty(el, 'innerHTML', merge$2(innerDescriptor, {
+      set: appendWrapper(innerDescriptor.set)
+    }));
+    el.resetSourceWatch_ = () => {
+      el.resetSourceWatch_ = null;
+      Object.keys(old).forEach(k => {
+        el[k] = old[k];
+      });
+      Object.defineProperty(el, 'innerHTML', innerDescriptor);
+    };
+
+    // on the first sourceset, we need to revert our changes
+    tech.one('sourceset', el.resetSourceWatch_);
+  };
+
+  /**
+   * our implementation of a `src` descriptor for browsers
+   * that do not have one
+   */
+  const srcDescriptorPolyfill = Object.defineProperty({}, 'src', {
+    get() {
+      if (this.hasAttribute('src')) {
+        return getAbsoluteURL(window.Element.prototype.getAttribute.call(this, 'src'));
+      }
+      return '';
+    },
+    set(v) {
+      window.Element.prototype.setAttribute.call(this, 'src', v);
+      return v;
+    }
+  });
+  const getSrcDescriptor = tech => getDescriptor([tech.el(), window.HTMLMediaElement.prototype, srcDescriptorPolyfill], 'src');
+
+  /**
+   * setup `sourceset` handling on the `Html5` tech. This function
+   * patches the following element properties/functions:
+   *
+   * - `src` - to determine when `src` is set
+   * - `setAttribute()` - to determine when `src` is set
+   * - `load()` - this re-triggers the source selection algorithm, and can
+   *              cause a sourceset.
+   *
+   * If there is no source when we are adding `sourceset` support or during a `load()`
+   * we also patch the functions listed in `firstSourceWatch`.
+   *
+   * @param {Html5} tech
+   *        The tech to patch
+   */
+  const setupSourceset = function (tech) {
+    if (!tech.featuresSourceset) {
+      return;
+    }
+    const el = tech.el();
+
+    // make sure sourceset isn't setup twice.
+    if (el.resetSourceset_) {
+      return;
+    }
+    const srcDescriptor = getSrcDescriptor(tech);
+    const oldSetAttribute = el.setAttribute;
+    const oldLoad = el.load;
+    Object.defineProperty(el, 'src', merge$2(srcDescriptor, {
+      set: v => {
+        const retval = srcDescriptor.set.call(el, v);
+
+        // we use the getter here to get the actual value set on src
+        tech.triggerSourceset(el.src);
+        return retval;
+      }
+    }));
+    el.setAttribute = (n, v) => {
+      const retval = oldSetAttribute.call(el, n, v);
+      if (/src/i.test(n)) {
+        tech.triggerSourceset(el.src);
+      }
+      return retval;
+    };
+    el.load = () => {
+      const retval = oldLoad.call(el);
+
+      // if load was called, but there was no source to fire
+      // sourceset on. We have to watch for a source append
+      // as that can trigger a `sourceset` when the media element
+      // has no source
+      if (!sourcesetLoad(tech)) {
+        tech.triggerSourceset('');
+        firstSourceWatch(tech);
+      }
+      return retval;
+    };
+    if (el.currentSrc) {
+      tech.triggerSourceset(el.currentSrc);
+    } else if (!sourcesetLoad(tech)) {
+      firstSourceWatch(tech);
+    }
+    el.resetSourceset_ = () => {
+      el.resetSourceset_ = null;
+      el.load = oldLoad;
+      el.setAttribute = oldSetAttribute;
+      Object.defineProperty(el, 'src', srcDescriptor);
+      if (el.resetSourceWatch_) {
+        el.resetSourceWatch_();
+      }
+    };
+  };
+
+  /**
+   * @file html5.js
+   */
+
+  /**
+   * HTML5 Media Controller - Wrapper for HTML5 Media API
+   *
+   * @mixes Tech~SourceHandlerAdditions
+   * @extends Tech
+   */
+  class Html5 extends Tech {
+    /**
+    * Create an instance of this Tech.
+    *
+    * @param {Object} [options]
+    *        The key/value store of player options.
+    *
+    * @param {Function} [ready]
+    *        Callback function to call when the `HTML5` Tech is ready.
+    */
+    constructor(options, ready) {
+      super(options, ready);
+      const source = options.source;
+      let crossoriginTracks = false;
+      this.featuresVideoFrameCallback = this.featuresVideoFrameCallback && this.el_.tagName === 'VIDEO';
+
+      // Set the source if one is provided
+      // 1) Check if the source is new (if not, we want to keep the original so playback isn't interrupted)
+      // 2) Check to see if the network state of the tag was failed at init, and if so, reset the source
+      // anyway so the error gets fired.
+      if (source && (this.el_.currentSrc !== source.src || options.tag && options.tag.initNetworkState_ === 3)) {
+        this.setSource(source);
+      } else {
+        this.handleLateInit_(this.el_);
+      }
+
+      // setup sourceset after late sourceset/init
+      if (options.enableSourceset) {
+        this.setupSourcesetHandling_();
+      }
+      this.isScrubbing_ = false;
+      if (this.el_.hasChildNodes()) {
+        const nodes = this.el_.childNodes;
+        let nodesLength = nodes.length;
+        const removeNodes = [];
+        while (nodesLength--) {
+          const node = nodes[nodesLength];
+          const nodeName = node.nodeName.toLowerCase();
+          if (nodeName === 'track') {
+            if (!this.featuresNativeTextTracks) {
+              // Empty video tag tracks so the built-in player doesn't use them also.
+              // This may not be fast enough to stop HTML5 browsers from reading the tags
+              // so we'll need to turn off any default tracks if we're manually doing
+              // captions and subtitles. videoElement.textTracks
+              removeNodes.push(node);
+            } else {
+              // store HTMLTrackElement and TextTrack to remote list
+              this.remoteTextTrackEls().addTrackElement_(node);
+              this.remoteTextTracks().addTrack(node.track);
+              this.textTracks().addTrack(node.track);
+              if (!crossoriginTracks && !this.el_.hasAttribute('crossorigin') && isCrossOrigin(node.src)) {
+                crossoriginTracks = true;
+              }
+            }
+          }
+        }
+        for (let i = 0; i < removeNodes.length; i++) {
+          this.el_.removeChild(removeNodes[i]);
+        }
+      }
+      this.proxyNativeTracks_();
+      if (this.featuresNativeTextTracks && crossoriginTracks) {
+        log$1.warn('Text Tracks are being loaded from another origin but the crossorigin attribute isn\'t used.\n' + 'This may prevent text tracks from loading.');
+      }
+
+      // prevent iOS Safari from disabling metadata text tracks during native playback
+      this.restoreMetadataTracksInIOSNativePlayer_();
+
+      // Determine if native controls should be used
+      // Our goal should be to get the custom controls on mobile solid everywhere
+      // so we can remove this all together. Right now this will block custom
+      // controls on touch enabled laptops like the Chrome Pixel
+      if ((TOUCH_ENABLED || IS_IPHONE) && options.nativeControlsForTouch === true) {
+        this.setControls(true);
+      }
+
+      // on iOS, we want to proxy `webkitbeginfullscreen` and `webkitendfullscreen`
+      // into a `fullscreenchange` event
+      this.proxyWebkitFullscreen_();
+      this.triggerReady();
+    }
+
+    /**
+     * Dispose of `HTML5` media element and remove all tracks.
+     */
+    dispose() {
+      if (this.el_ && this.el_.resetSourceset_) {
+        this.el_.resetSourceset_();
+      }
+      Html5.disposeMediaElement(this.el_);
+      this.options_ = null;
+
+      // tech will handle clearing of the emulated track list
+      super.dispose();
+    }
+
+    /**
+     * Modify the media element so that we can detect when
+     * the source is changed. Fires `sourceset` just after the source has changed
+     */
+    setupSourcesetHandling_() {
+      setupSourceset(this);
+    }
+
+    /**
+     * When a captions track is enabled in the iOS Safari native player, all other
+     * tracks are disabled (including metadata tracks), which nulls all of their
+     * associated cue points. This will restore metadata tracks to their pre-fullscreen
+     * state in those cases so that cue points are not needlessly lost.
+     *
+     * @private
+     */
+    restoreMetadataTracksInIOSNativePlayer_() {
+      const textTracks = this.textTracks();
+      let metadataTracksPreFullscreenState;
+
+      // captures a snapshot of every metadata track's current state
+      const takeMetadataTrackSnapshot = () => {
+        metadataTracksPreFullscreenState = [];
+        for (let i = 0; i < textTracks.length; i++) {
+          const track = textTracks[i];
+          if (track.kind === 'metadata') {
+            metadataTracksPreFullscreenState.push({
+              track,
+              storedMode: track.mode
+            });
+          }
+        }
+      };
+
+      // snapshot each metadata track's initial state, and update the snapshot
+      // each time there is a track 'change' event
+      takeMetadataTrackSnapshot();
+      textTracks.addEventListener('change', takeMetadataTrackSnapshot);
+      this.on('dispose', () => textTracks.removeEventListener('change', takeMetadataTrackSnapshot));
+      const restoreTrackMode = () => {
+        for (let i = 0; i < metadataTracksPreFullscreenState.length; i++) {
+          const storedTrack = metadataTracksPreFullscreenState[i];
+          if (storedTrack.track.mode === 'disabled' && storedTrack.track.mode !== storedTrack.storedMode) {
+            storedTrack.track.mode = storedTrack.storedMode;
+          }
+        }
+        // we only want this handler to be executed on the first 'change' event
+        textTracks.removeEventListener('change', restoreTrackMode);
+      };
+
+      // when we enter fullscreen playback, stop updating the snapshot and
+      // restore all track modes to their pre-fullscreen state
+      this.on('webkitbeginfullscreen', () => {
+        textTracks.removeEventListener('change', takeMetadataTrackSnapshot);
+
+        // remove the listener before adding it just in case it wasn't previously removed
+        textTracks.removeEventListener('change', restoreTrackMode);
+        textTracks.addEventListener('change', restoreTrackMode);
+      });
+
+      // start updating the snapshot again after leaving fullscreen
+      this.on('webkitendfullscreen', () => {
+        // remove the listener before adding it just in case it wasn't previously removed
+        textTracks.removeEventListener('change', takeMetadataTrackSnapshot);
+        textTracks.addEventListener('change', takeMetadataTrackSnapshot);
+
+        // remove the restoreTrackMode handler in case it wasn't triggered during fullscreen playback
+        textTracks.removeEventListener('change', restoreTrackMode);
+      });
+    }
+
+    /**
+     * Attempt to force override of tracks for the given type
+     *
+     * @param {string} type - Track type to override, possible values include 'Audio',
+     * 'Video', and 'Text'.
+     * @param {boolean} override - If set to true native audio/video will be overridden,
+     * otherwise native audio/video will potentially be used.
+     * @private
+     */
+    overrideNative_(type, override) {
+      // If there is no behavioral change don't add/remove listeners
+      if (override !== this[`featuresNative${type}Tracks`]) {
+        return;
+      }
+      const lowerCaseType = type.toLowerCase();
+      if (this[`${lowerCaseType}TracksListeners_`]) {
+        Object.keys(this[`${lowerCaseType}TracksListeners_`]).forEach(eventName => {
+          const elTracks = this.el()[`${lowerCaseType}Tracks`];
+          elTracks.removeEventListener(eventName, this[`${lowerCaseType}TracksListeners_`][eventName]);
+        });
+      }
+      this[`featuresNative${type}Tracks`] = !override;
+      this[`${lowerCaseType}TracksListeners_`] = null;
+      this.proxyNativeTracksForType_(lowerCaseType);
+    }
+
+    /**
+     * Attempt to force override of native audio tracks.
+     *
+     * @param {boolean} override - If set to true native audio will be overridden,
+     * otherwise native audio will potentially be used.
+     */
+    overrideNativeAudioTracks(override) {
+      this.overrideNative_('Audio', override);
+    }
+
+    /**
+     * Attempt to force override of native video tracks.
+     *
+     * @param {boolean} override - If set to true native video will be overridden,
+     * otherwise native video will potentially be used.
+     */
+    overrideNativeVideoTracks(override) {
+      this.overrideNative_('Video', override);
+    }
+
+    /**
+     * Proxy native track list events for the given type to our track
+     * lists if the browser we are playing in supports that type of track list.
+     *
+     * @param {string} name - Track type; values include 'audio', 'video', and 'text'
+     * @private
+     */
+    proxyNativeTracksForType_(name) {
+      const props = NORMAL[name];
+      const elTracks = this.el()[props.getterName];
+      const techTracks = this[props.getterName]();
+      if (!this[`featuresNative${props.capitalName}Tracks`] || !elTracks || !elTracks.addEventListener) {
+        return;
+      }
+      const listeners = {
+        change: e => {
+          const event = {
+            type: 'change',
+            target: techTracks,
+            currentTarget: techTracks,
+            srcElement: techTracks
+          };
+          techTracks.trigger(event);
+
+          // if we are a text track change event, we should also notify the
+          // remote text track list. This can potentially cause a false positive
+          // if we were to get a change event on a non-remote track and
+          // we triggered the event on the remote text track list which doesn't
+          // contain that track. However, best practices mean looping through the
+          // list of tracks and searching for the appropriate mode value, so,
+          // this shouldn't pose an issue
+          if (name === 'text') {
+            this[REMOTE.remoteText.getterName]().trigger(event);
+          }
+        },
+        addtrack(e) {
+          techTracks.addTrack(e.track);
+        },
+        removetrack(e) {
+          techTracks.removeTrack(e.track);
+        }
+      };
+      const removeOldTracks = function () {
+        const removeTracks = [];
+        for (let i = 0; i < techTracks.length; i++) {
+          let found = false;
+          for (let j = 0; j < elTracks.length; j++) {
+            if (elTracks[j] === techTracks[i]) {
+              found = true;
+              break;
+            }
+          }
+          if (!found) {
+            removeTracks.push(techTracks[i]);
+          }
+        }
+        while (removeTracks.length) {
+          techTracks.removeTrack(removeTracks.shift());
+        }
+      };
+      this[props.getterName + 'Listeners_'] = listeners;
+      Object.keys(listeners).forEach(eventName => {
+        const listener = listeners[eventName];
+        elTracks.addEventListener(eventName, listener);
+        this.on('dispose', e => elTracks.removeEventListener(eventName, listener));
+      });
+
+      // Remove (native) tracks that are not used anymore
+      this.on('loadstart', removeOldTracks);
+      this.on('dispose', e => this.off('loadstart', removeOldTracks));
+    }
+
+    /**
+     * Proxy all native track list events to our track lists if the browser we are playing
+     * in supports that type of track list.
+     *
+     * @private
+     */
+    proxyNativeTracks_() {
+      NORMAL.names.forEach(name => {
+        this.proxyNativeTracksForType_(name);
+      });
+    }
+
+    /**
+     * Create the `Html5` Tech's DOM element.
+     *
+     * @return {Element}
+     *         The element that gets created.
+     */
+    createEl() {
+      let el = this.options_.tag;
+
+      // Check if this browser supports moving the element into the box.
+      // On the iPhone video will break if you move the element,
+      // So we have to create a brand new element.
+      // If we ingested the player div, we do not need to move the media element.
+      if (!el || !(this.options_.playerElIngest || this.movingMediaElementInDOM)) {
+        // If the original tag is still there, clone and remove it.
+        if (el) {
+          const clone = el.cloneNode(true);
+          if (el.parentNode) {
+            el.parentNode.insertBefore(clone, el);
+          }
+          Html5.disposeMediaElement(el);
+          el = clone;
+        } else {
+          el = document.createElement('video');
+
+          // determine if native controls should be used
+          const tagAttributes = this.options_.tag && getAttributes(this.options_.tag);
+          const attributes = merge$2({}, tagAttributes);
+          if (!TOUCH_ENABLED || this.options_.nativeControlsForTouch !== true) {
+            delete attributes.controls;
+          }
+          setAttributes(el, Object.assign(attributes, {
+            id: this.options_.techId,
+            class: 'vjs-tech'
+          }));
+        }
+        el.playerId = this.options_.playerId;
+      }
+      if (typeof this.options_.preload !== 'undefined') {
+        setAttribute(el, 'preload', this.options_.preload);
+      }
+      if (this.options_.disablePictureInPicture !== undefined) {
+        el.disablePictureInPicture = this.options_.disablePictureInPicture;
+      }
+
+      // Update specific tag settings, in case they were overridden
+      // `autoplay` has to be *last* so that `muted` and `playsinline` are present
+      // when iOS/Safari or other browsers attempt to autoplay.
+      const settingsAttrs = ['loop', 'muted', 'playsinline', 'autoplay'];
+      for (let i = 0; i < settingsAttrs.length; i++) {
+        const attr = settingsAttrs[i];
+        const value = this.options_[attr];
+        if (typeof value !== 'undefined') {
+          if (value) {
+            setAttribute(el, attr, attr);
+          } else {
+            removeAttribute(el, attr);
+          }
+          el[attr] = value;
+        }
+      }
+      return el;
+    }
+
+    /**
+     * This will be triggered if the loadstart event has already fired, before videojs was
+     * ready. Two known examples of when this can happen are:
+     * 1. If we're loading the playback object after it has started loading
+     * 2. The media is already playing the (often with autoplay on) then
+     *
+     * This function will fire another loadstart so that videojs can catchup.
+     *
+     * @fires Tech#loadstart
+     *
+     * @return {undefined}
+     *         returns nothing.
+     */
+    handleLateInit_(el) {
+      if (el.networkState === 0 || el.networkState === 3) {
+        // The video element hasn't started loading the source yet
+        // or didn't find a source
+        return;
+      }
+      if (el.readyState === 0) {
+        // NetworkState is set synchronously BUT loadstart is fired at the
+        // end of the current stack, usually before setInterval(fn, 0).
+        // So at this point we know loadstart may have already fired or is
+        // about to fire, and either way the player hasn't seen it yet.
+        // We don't want to fire loadstart prematurely here and cause a
+        // double loadstart so we'll wait and see if it happens between now
+        // and the next loop, and fire it if not.
+        // HOWEVER, we also want to make sure it fires before loadedmetadata
+        // which could also happen between now and the next loop, so we'll
+        // watch for that also.
+        let loadstartFired = false;
+        const setLoadstartFired = function () {
+          loadstartFired = true;
+        };
+        this.on('loadstart', setLoadstartFired);
+        const triggerLoadstart = function () {
+          // We did miss the original loadstart. Make sure the player
+          // sees loadstart before loadedmetadata
+          if (!loadstartFired) {
+            this.trigger('loadstart');
+          }
+        };
+        this.on('loadedmetadata', triggerLoadstart);
+        this.ready(function () {
+          this.off('loadstart', setLoadstartFired);
+          this.off('loadedmetadata', triggerLoadstart);
+          if (!loadstartFired) {
+            // We did miss the original native loadstart. Fire it now.
+            this.trigger('loadstart');
+          }
+        });
+        return;
+      }
+
+      // From here on we know that loadstart already fired and we missed it.
+      // The other readyState events aren't as much of a problem if we double
+      // them, so not going to go to as much trouble as loadstart to prevent
+      // that unless we find reason to.
+      const eventsToTrigger = ['loadstart'];
+
+      // loadedmetadata: newly equal to HAVE_METADATA (1) or greater
+      eventsToTrigger.push('loadedmetadata');
+
+      // loadeddata: newly increased to HAVE_CURRENT_DATA (2) or greater
+      if (el.readyState >= 2) {
+        eventsToTrigger.push('loadeddata');
+      }
+
+      // canplay: newly increased to HAVE_FUTURE_DATA (3) or greater
+      if (el.readyState >= 3) {
+        eventsToTrigger.push('canplay');
+      }
+
+      // canplaythrough: newly equal to HAVE_ENOUGH_DATA (4)
+      if (el.readyState >= 4) {
+        eventsToTrigger.push('canplaythrough');
+      }
+
+      // We still need to give the player time to add event listeners
+      this.ready(function () {
+        eventsToTrigger.forEach(function (type) {
+          this.trigger(type);
+        }, this);
+      });
+    }
+
+    /**
+     * Set whether we are scrubbing or not.
+     * This is used to decide whether we should use `fastSeek` or not.
+     * `fastSeek` is used to provide trick play on Safari browsers.
+     *
+     * @param {boolean} isScrubbing
+     *                  - true for we are currently scrubbing
+     *                  - false for we are no longer scrubbing
+     */
+    setScrubbing(isScrubbing) {
+      this.isScrubbing_ = isScrubbing;
+    }
+
+    /**
+     * Get whether we are scrubbing or not.
+     *
+     * @return {boolean} isScrubbing
+     *                  - true for we are currently scrubbing
+     *                  - false for we are no longer scrubbing
+     */
+    scrubbing() {
+      return this.isScrubbing_;
+    }
+
+    /**
+     * Set current time for the `HTML5` tech.
+     *
+     * @param {number} seconds
+     *        Set the current time of the media to this.
+     */
+    setCurrentTime(seconds) {
+      try {
+        if (this.isScrubbing_ && this.el_.fastSeek && IS_ANY_SAFARI) {
+          this.el_.fastSeek(seconds);
+        } else {
+          this.el_.currentTime = seconds;
+        }
+      } catch (e) {
+        log$1(e, 'Video is not ready. (Video.js)');
+        // this.warning(VideoJS.warnings.videoNotReady);
+      }
+    }
+
+    /**
+     * Get the current duration of the HTML5 media element.
+     *
+     * @return {number}
+     *         The duration of the media or 0 if there is no duration.
+     */
+    duration() {
+      // Android Chrome will report duration as Infinity for VOD HLS until after
+      // playback has started, which triggers the live display erroneously.
+      // Return NaN if playback has not started and trigger a durationupdate once
+      // the duration can be reliably known.
+      if (this.el_.duration === Infinity && IS_ANDROID && IS_CHROME && this.el_.currentTime === 0) {
+        // Wait for the first `timeupdate` with currentTime > 0 - there may be
+        // several with 0
+        const checkProgress = () => {
+          if (this.el_.currentTime > 0) {
+            // Trigger durationchange for genuinely live video
+            if (this.el_.duration === Infinity) {
+              this.trigger('durationchange');
+            }
+            this.off('timeupdate', checkProgress);
+          }
+        };
+        this.on('timeupdate', checkProgress);
+        return NaN;
+      }
+      return this.el_.duration || NaN;
+    }
+
+    /**
+     * Get the current width of the HTML5 media element.
+     *
+     * @return {number}
+     *         The width of the HTML5 media element.
+     */
+    width() {
+      return this.el_.offsetWidth;
+    }
+
+    /**
+     * Get the current height of the HTML5 media element.
+     *
+     * @return {number}
+     *         The height of the HTML5 media element.
+     */
+    height() {
+      return this.el_.offsetHeight;
+    }
+
+    /**
+     * Proxy iOS `webkitbeginfullscreen` and `webkitendfullscreen` into
+     * `fullscreenchange` event.
+     *
+     * @private
+     * @fires fullscreenchange
+     * @listens webkitendfullscreen
+     * @listens webkitbeginfullscreen
+     * @listens webkitbeginfullscreen
+     */
+    proxyWebkitFullscreen_() {
+      if (!('webkitDisplayingFullscreen' in this.el_)) {
+        return;
+      }
+      const endFn = function () {
+        this.trigger('fullscreenchange', {
+          isFullscreen: false
+        });
+        // Safari will sometimes set controls on the videoelement when existing fullscreen.
+        if (this.el_.controls && !this.options_.nativeControlsForTouch && this.controls()) {
+          this.el_.controls = false;
+        }
+      };
+      const beginFn = function () {
+        if ('webkitPresentationMode' in this.el_ && this.el_.webkitPresentationMode !== 'picture-in-picture') {
+          this.one('webkitendfullscreen', endFn);
+          this.trigger('fullscreenchange', {
+            isFullscreen: true,
+            // set a flag in case another tech triggers fullscreenchange
+            nativeIOSFullscreen: true
+          });
+        }
+      };
+      this.on('webkitbeginfullscreen', beginFn);
+      this.on('dispose', () => {
+        this.off('webkitbeginfullscreen', beginFn);
+        this.off('webkitendfullscreen', endFn);
+      });
+    }
+
+    /**
+     * Check if fullscreen is supported on the video el.
+     *
+     * @return {boolean}
+     *         - True if fullscreen is supported.
+     *         - False if fullscreen is not supported.
+     */
+    supportsFullScreen() {
+      return typeof this.el_.webkitEnterFullScreen === 'function';
+    }
+
+    /**
+     * Request that the `HTML5` Tech enter fullscreen.
+     */
+    enterFullScreen() {
+      const video = this.el_;
+      if (video.paused && video.networkState <= video.HAVE_METADATA) {
+        // attempt to prime the video element for programmatic access
+        // this isn't necessary on the desktop but shouldn't hurt
+        silencePromise(this.el_.play());
+
+        // playing and pausing synchronously during the transition to fullscreen
+        // can get iOS ~6.1 devices into a play/pause loop
+        this.setTimeout(function () {
+          video.pause();
+          try {
+            video.webkitEnterFullScreen();
+          } catch (e) {
+            this.trigger('fullscreenerror', e);
+          }
+        }, 0);
+      } else {
+        try {
+          video.webkitEnterFullScreen();
+        } catch (e) {
+          this.trigger('fullscreenerror', e);
+        }
+      }
+    }
+
+    /**
+     * Request that the `HTML5` Tech exit fullscreen.
+     */
+    exitFullScreen() {
+      if (!this.el_.webkitDisplayingFullscreen) {
+        this.trigger('fullscreenerror', new Error('The video is not fullscreen'));
+        return;
+      }
+      this.el_.webkitExitFullScreen();
+    }
+
+    /**
+     * Create a floating video window always on top of other windows so that users may
+     * continue consuming media while they interact with other content sites, or
+     * applications on their device.
+     *
+     * @see [Spec]{@link https://wicg.github.io/picture-in-picture}
+     *
+     * @return {Promise}
+     *         A promise with a Picture-in-Picture window.
+     */
+    requestPictureInPicture() {
+      return this.el_.requestPictureInPicture();
+    }
+
+    /**
+     * Native requestVideoFrameCallback if supported by browser/tech, or fallback
+     * Don't use rVCF on Safari when DRM is playing, as it doesn't fire
+     * Needs to be checked later than the constructor
+     * This will be a false positive for clear sources loaded after a Fairplay source
+     *
+     * @param {function} cb function to call
+     * @return {number} id of request
+     */
+    requestVideoFrameCallback(cb) {
+      if (this.featuresVideoFrameCallback && !this.el_.webkitKeys) {
+        return this.el_.requestVideoFrameCallback(cb);
+      }
+      return super.requestVideoFrameCallback(cb);
+    }
+
+    /**
+     * Native or fallback requestVideoFrameCallback
+     *
+     * @param {number} id request id to cancel
+     */
+    cancelVideoFrameCallback(id) {
+      if (this.featuresVideoFrameCallback && !this.el_.webkitKeys) {
+        this.el_.cancelVideoFrameCallback(id);
+      } else {
+        super.cancelVideoFrameCallback(id);
+      }
+    }
+
+    /**
+     * A getter/setter for the `Html5` Tech's source object.
+     * > Note: Please use {@link Html5#setSource}
+     *
+     * @param {Tech~SourceObject} [src]
+     *        The source object you want to set on the `HTML5` techs element.
+     *
+     * @return {Tech~SourceObject|undefined}
+     *         - The current source object when a source is not passed in.
+     *         - undefined when setting
+     *
+     * @deprecated Since version 5.
+     */
+    src(src) {
+      if (src === undefined) {
+        return this.el_.src;
+      }
+
+      // Setting src through `src` instead of `setSrc` will be deprecated
+      this.setSrc(src);
+    }
+
+    /**
+     * Reset the tech by removing all sources and then calling
+     * {@link Html5.resetMediaElement}.
+     */
+    reset() {
+      Html5.resetMediaElement(this.el_);
+    }
+
+    /**
+     * Get the current source on the `HTML5` Tech. Falls back to returning the source from
+     * the HTML5 media element.
+     *
+     * @return {Tech~SourceObject}
+     *         The current source object from the HTML5 tech. With a fallback to the
+     *         elements source.
+     */
+    currentSrc() {
+      if (this.currentSource_) {
+        return this.currentSource_.src;
+      }
+      return this.el_.currentSrc;
+    }
+
+    /**
+     * Set controls attribute for the HTML5 media Element.
+     *
+     * @param {string} val
+     *        Value to set the controls attribute to
+     */
+    setControls(val) {
+      this.el_.controls = !!val;
+    }
+
+    /**
+     * Create and returns a remote {@link TextTrack} object.
+     *
+     * @param {string} kind
+     *        `TextTrack` kind (subtitles, captions, descriptions, chapters, or metadata)
+     *
+     * @param {string} [label]
+     *        Label to identify the text track
+     *
+     * @param {string} [language]
+     *        Two letter language abbreviation
+     *
+     * @return {TextTrack}
+     *         The TextTrack that gets created.
+     */
+    addTextTrack(kind, label, language) {
+      if (!this.featuresNativeTextTracks) {
+        return super.addTextTrack(kind, label, language);
+      }
+      return this.el_.addTextTrack(kind, label, language);
+    }
+
+    /**
+     * Creates either native TextTrack or an emulated TextTrack depending
+     * on the value of `featuresNativeTextTracks`
+     *
+     * @param {Object} options
+     *        The object should contain the options to initialize the TextTrack with.
+     *
+     * @param {string} [options.kind]
+     *        `TextTrack` kind (subtitles, captions, descriptions, chapters, or metadata).
+     *
+     * @param {string} [options.label]
+     *        Label to identify the text track
+     *
+     * @param {string} [options.language]
+     *        Two letter language abbreviation.
+     *
+     * @param {boolean} [options.default]
+     *        Default this track to on.
+     *
+     * @param {string} [options.id]
+     *        The internal id to assign this track.
+     *
+     * @param {string} [options.src]
+     *        A source url for the track.
+     *
+     * @return {HTMLTrackElement}
+     *         The track element that gets created.
+     */
+    createRemoteTextTrack(options) {
+      if (!this.featuresNativeTextTracks) {
+        return super.createRemoteTextTrack(options);
+      }
+      const htmlTrackElement = document.createElement('track');
+      if (options.kind) {
+        htmlTrackElement.kind = options.kind;
+      }
+      if (options.label) {
+        htmlTrackElement.label = options.label;
+      }
+      if (options.language || options.srclang) {
+        htmlTrackElement.srclang = options.language || options.srclang;
+      }
+      if (options.default) {
+        htmlTrackElement.default = options.default;
+      }
+      if (options.id) {
+        htmlTrackElement.id = options.id;
+      }
+      if (options.src) {
+        htmlTrackElement.src = options.src;
+      }
+      return htmlTrackElement;
+    }
+
+    /**
+     * Creates a remote text track object and returns an html track element.
+     *
+     * @param {Object} options The object should contain values for
+     * kind, language, label, and src (location of the WebVTT file)
+     * @param {boolean} [manualCleanup=false] if set to true, the TextTrack
+     * will not be removed from the TextTrackList and HtmlTrackElementList
+     * after a source change
+     * @return {HTMLTrackElement} An Html Track Element.
+     * This can be an emulated {@link HTMLTrackElement} or a native one.
+     *
+     */
+    addRemoteTextTrack(options, manualCleanup) {
+      const htmlTrackElement = super.addRemoteTextTrack(options, manualCleanup);
+      if (this.featuresNativeTextTracks) {
+        this.el().appendChild(htmlTrackElement);
+      }
+      return htmlTrackElement;
+    }
+
+    /**
+     * Remove remote `TextTrack` from `TextTrackList` object
+     *
+     * @param {TextTrack} track
+     *        `TextTrack` object to remove
+     */
+    removeRemoteTextTrack(track) {
+      super.removeRemoteTextTrack(track);
+      if (this.featuresNativeTextTracks) {
+        const tracks = this.$$('track');
+        let i = tracks.length;
+        while (i--) {
+          if (track === tracks[i] || track === tracks[i].track) {
+            this.el().removeChild(tracks[i]);
+          }
+        }
+      }
+    }
+
+    /**
+     * Gets available media playback quality metrics as specified by the W3C's Media
+     * Playback Quality API.
+     *
+     * @see [Spec]{@link https://wicg.github.io/media-playback-quality}
+     *
+     * @return {Object}
+     *         An object with supported media playback quality metrics
+     */
+    getVideoPlaybackQuality() {
+      if (typeof this.el().getVideoPlaybackQuality === 'function') {
+        return this.el().getVideoPlaybackQuality();
+      }
+      const videoPlaybackQuality = {};
+      if (typeof this.el().webkitDroppedFrameCount !== 'undefined' && typeof this.el().webkitDecodedFrameCount !== 'undefined') {
+        videoPlaybackQuality.droppedVideoFrames = this.el().webkitDroppedFrameCount;
+        videoPlaybackQuality.totalVideoFrames = this.el().webkitDecodedFrameCount;
+      }
+      if (window.performance) {
+        videoPlaybackQuality.creationTime = window.performance.now();
+      }
+      return videoPlaybackQuality;
+    }
+  }
+
+  /* HTML5 Support Testing ---------------------------------------------------- */
+
+  /**
+   * Element for testing browser HTML5 media capabilities
+   *
+   * @type {Element}
+   * @constant
+   * @private
+   */
+  defineLazyProperty(Html5, 'TEST_VID', function () {
+    if (!isReal()) {
+      return;
+    }
+    const video = document.createElement('video');
+    const track = document.createElement('track');
+    track.kind = 'captions';
+    track.srclang = 'en';
+    track.label = 'English';
+    video.appendChild(track);
+    return video;
+  });
+
+  /**
+   * Check if HTML5 media is supported by this browser/device.
+   *
+   * @return {boolean}
+   *         - True if HTML5 media is supported.
+   *         - False if HTML5 media is not supported.
+   */
+  Html5.isSupported = function () {
+    // IE with no Media Player is a LIAR! (#984)
+    try {
+      Html5.TEST_VID.volume = 0.5;
+    } catch (e) {
+      return false;
+    }
+    return !!(Html5.TEST_VID && Html5.TEST_VID.canPlayType);
+  };
+
+  /**
+   * Check if the tech can support the given type
+   *
+   * @param {string} type
+   *        The mimetype to check
+   * @return {string} 'probably', 'maybe', or '' (empty string)
+   */
+  Html5.canPlayType = function (type) {
+    return Html5.TEST_VID.canPlayType(type);
+  };
+
+  /**
+   * Check if the tech can support the given source
+   *
+   * @param {Object} srcObj
+   *        The source object
+   * @param {Object} options
+   *        The options passed to the tech
+   * @return {string} 'probably', 'maybe', or '' (empty string)
+   */
+  Html5.canPlaySource = function (srcObj, options) {
+    return Html5.canPlayType(srcObj.type);
+  };
+
+  /**
+   * Check if the volume can be changed in this browser/device.
+   * Volume cannot be changed in a lot of mobile devices.
+   * Specifically, it can't be changed from 1 on iOS.
+   *
+   * @return {boolean}
+   *         - True if volume can be controlled
+   *         - False otherwise
+   */
+  Html5.canControlVolume = function () {
+    // IE will error if Windows Media Player not installed #3315
+    try {
+      const volume = Html5.TEST_VID.volume;
+      Html5.TEST_VID.volume = volume / 2 + 0.1;
+      const canControl = volume !== Html5.TEST_VID.volume;
+
+      // With the introduction of iOS 15, there are cases where the volume is read as
+      // changed but reverts back to its original state at the start of the next tick.
+      // To determine whether volume can be controlled on iOS,
+      // a timeout is set and the volume is checked asynchronously.
+      // Since `features` doesn't currently work asynchronously, the value is manually set.
+      if (canControl && IS_IOS) {
+        window.setTimeout(() => {
+          if (Html5 && Html5.prototype) {
+            Html5.prototype.featuresVolumeControl = volume !== Html5.TEST_VID.volume;
+          }
+        });
+
+        // default iOS to false, which will be updated in the timeout above.
+        return false;
+      }
+      return canControl;
+    } catch (e) {
+      return false;
+    }
+  };
+
+  /**
+   * Check if the volume can be muted in this browser/device.
+   * Some devices, e.g. iOS, don't allow changing volume
+   * but permits muting/unmuting.
+   *
+   * @return {boolean}
+   *      - True if volume can be muted
+   *      - False otherwise
+   */
+  Html5.canMuteVolume = function () {
+    try {
+      const muted = Html5.TEST_VID.muted;
+
+      // in some versions of iOS muted property doesn't always
+      // work, so we want to set both property and attribute
+      Html5.TEST_VID.muted = !muted;
+      if (Html5.TEST_VID.muted) {
+        setAttribute(Html5.TEST_VID, 'muted', 'muted');
+      } else {
+        removeAttribute(Html5.TEST_VID, 'muted', 'muted');
+      }
+      return muted !== Html5.TEST_VID.muted;
+    } catch (e) {
+      return false;
+    }
+  };
+
+  /**
+   * Check if the playback rate can be changed in this browser/device.
+   *
+   * @return {boolean}
+   *         - True if playback rate can be controlled
+   *         - False otherwise
+   */
+  Html5.canControlPlaybackRate = function () {
+    // Playback rate API is implemented in Android Chrome, but doesn't do anything
+    // https://github.com/videojs/video.js/issues/3180
+    if (IS_ANDROID && IS_CHROME && CHROME_VERSION < 58) {
+      return false;
+    }
+    // IE will error if Windows Media Player not installed #3315
+    try {
+      const playbackRate = Html5.TEST_VID.playbackRate;
+      Html5.TEST_VID.playbackRate = playbackRate / 2 + 0.1;
+      return playbackRate !== Html5.TEST_VID.playbackRate;
+    } catch (e) {
+      return false;
+    }
+  };
+
+  /**
+   * Check if we can override a video/audio elements attributes, with
+   * Object.defineProperty.
+   *
+   * @return {boolean}
+   *         - True if builtin attributes can be overridden
+   *         - False otherwise
+   */
+  Html5.canOverrideAttributes = function () {
+    // if we cannot overwrite the src/innerHTML property, there is no support
+    // iOS 7 safari for instance cannot do this.
+    try {
+      const noop = () => {};
+      Object.defineProperty(document.createElement('video'), 'src', {
+        get: noop,
+        set: noop
+      });
+      Object.defineProperty(document.createElement('audio'), 'src', {
+        get: noop,
+        set: noop
+      });
+      Object.defineProperty(document.createElement('video'), 'innerHTML', {
+        get: noop,
+        set: noop
+      });
+      Object.defineProperty(document.createElement('audio'), 'innerHTML', {
+        get: noop,
+        set: noop
+      });
+    } catch (e) {
+      return false;
+    }
+    return true;
+  };
+
+  /**
+   * Check to see if native `TextTrack`s are supported by this browser/device.
+   *
+   * @return {boolean}
+   *         - True if native `TextTrack`s are supported.
+   *         - False otherwise
+   */
+  Html5.supportsNativeTextTracks = function () {
+    return IS_ANY_SAFARI || IS_IOS && IS_CHROME;
+  };
+
+  /**
+   * Check to see if native `VideoTrack`s are supported by this browser/device
+   *
+   * @return {boolean}
+   *        - True if native `VideoTrack`s are supported.
+   *        - False otherwise
+   */
+  Html5.supportsNativeVideoTracks = function () {
+    return !!(Html5.TEST_VID && Html5.TEST_VID.videoTracks);
+  };
+
+  /**
+   * Check to see if native `AudioTrack`s are supported by this browser/device
+   *
+   * @return {boolean}
+   *        - True if native `AudioTrack`s are supported.
+   *        - False otherwise
+   */
+  Html5.supportsNativeAudioTracks = function () {
+    return !!(Html5.TEST_VID && Html5.TEST_VID.audioTracks);
+  };
+
+  /**
+   * An array of events available on the Html5 tech.
+   *
+   * @private
+   * @type {Array}
+   */
+  Html5.Events = ['loadstart', 'suspend', 'abort', 'error', 'emptied', 'stalled', 'loadedmetadata', 'loadeddata', 'canplay', 'canplaythrough', 'playing', 'waiting', 'seeking', 'seeked', 'ended', 'durationchange', 'timeupdate', 'progress', 'play', 'pause', 'ratechange', 'resize', 'volumechange'];
+
+  /**
+   * Boolean indicating whether the `Tech` supports volume control.
+   *
+   * @type {boolean}
+   * @default {@link Html5.canControlVolume}
+   */
+  /**
+   * Boolean indicating whether the `Tech` supports muting volume.
+   *
+   * @type {boolean}
+   * @default {@link Html5.canMuteVolume}
+   */
+
+  /**
+   * Boolean indicating whether the `Tech` supports changing the speed at which the media
+   * plays. Examples:
+   *   - Set player to play 2x (twice) as fast
+   *   - Set player to play 0.5x (half) as fast
+   *
+   * @type {boolean}
+   * @default {@link Html5.canControlPlaybackRate}
+   */
+
+  /**
+   * Boolean indicating whether the `Tech` supports the `sourceset` event.
+   *
+   * @type {boolean}
+   * @default
+   */
+  /**
+   * Boolean indicating whether the `HTML5` tech currently supports native `TextTrack`s.
+   *
+   * @type {boolean}
+   * @default {@link Html5.supportsNativeTextTracks}
+   */
+  /**
+   * Boolean indicating whether the `HTML5` tech currently supports native `VideoTrack`s.
+   *
+   * @type {boolean}
+   * @default {@link Html5.supportsNativeVideoTracks}
+   */
+  /**
+   * Boolean indicating whether the `HTML5` tech currently supports native `AudioTrack`s.
+   *
+   * @type {boolean}
+   * @default {@link Html5.supportsNativeAudioTracks}
+   */
+  [['featuresMuteControl', 'canMuteVolume'], ['featuresPlaybackRate', 'canControlPlaybackRate'], ['featuresSourceset', 'canOverrideAttributes'], ['featuresNativeTextTracks', 'supportsNativeTextTracks'], ['featuresNativeVideoTracks', 'supportsNativeVideoTracks'], ['featuresNativeAudioTracks', 'supportsNativeAudioTracks']].forEach(function ([key, fn]) {
+    defineLazyProperty(Html5.prototype, key, () => Html5[fn](), true);
+  });
+  Html5.prototype.featuresVolumeControl = Html5.canControlVolume();
+
+  /**
+   * Boolean indicating whether the `HTML5` tech currently supports the media element
+   * moving in the DOM. iOS breaks if you move the media element, so this is set this to
+   * false there. Everywhere else this should be true.
+   *
+   * @type {boolean}
+   * @default
+   */
+  Html5.prototype.movingMediaElementInDOM = !IS_IOS;
+
+  // TODO: Previous comment: No longer appears to be used. Can probably be removed.
+  //       Is this true?
+  /**
+   * Boolean indicating whether the `HTML5` tech currently supports automatic media resize
+   * when going into fullscreen.
+   *
+   * @type {boolean}
+   * @default
+   */
+  Html5.prototype.featuresFullscreenResize = true;
+
+  /**
+   * Boolean indicating whether the `HTML5` tech currently supports the progress event.
+   * If this is false, manual `progress` events will be triggered instead.
+   *
+   * @type {boolean}
+   * @default
+   */
+  Html5.prototype.featuresProgressEvents = true;
+
+  /**
+   * Boolean indicating whether the `HTML5` tech currently supports the timeupdate event.
+   * If this is false, manual `timeupdate` events will be triggered instead.
+   *
+   * @default
+   */
+  Html5.prototype.featuresTimeupdateEvents = true;
+
+  /**
+   * Whether the HTML5 el supports `requestVideoFrameCallback`
+   *
+   * @type {boolean}
+   */
+  Html5.prototype.featuresVideoFrameCallback = !!(Html5.TEST_VID && Html5.TEST_VID.requestVideoFrameCallback);
+  Html5.disposeMediaElement = function (el) {
+    if (!el) {
+      return;
+    }
+    if (el.parentNode) {
+      el.parentNode.removeChild(el);
+    }
+
+    // remove any child track or source nodes to prevent their loading
+    while (el.hasChildNodes()) {
+      el.removeChild(el.firstChild);
+    }
+
+    // remove any src reference. not setting `src=''` because that causes a warning
+    // in firefox
+    el.removeAttribute('src');
+
+    // force the media element to update its loading state by calling load()
+    // however IE on Windows 7N has a bug that throws an error so need a try/catch (#793)
+    if (typeof el.load === 'function') {
+      // wrapping in an iife so it's not deoptimized (#1060#discussion_r10324473)
+      (function () {
+        try {
+          el.load();
+        } catch (e) {
+          // not supported
+        }
+      })();
+    }
+  };
+  Html5.resetMediaElement = function (el) {
+    if (!el) {
+      return;
+    }
+    const sources = el.querySelectorAll('source');
+    let i = sources.length;
+    while (i--) {
+      el.removeChild(sources[i]);
+    }
+
+    // remove any src reference.
+    // not setting `src=''` because that throws an error
+    el.removeAttribute('src');
+    if (typeof el.load === 'function') {
+      // wrapping in an iife so it's not deoptimized (#1060#discussion_r10324473)
+      (function () {
+        try {
+          el.load();
+        } catch (e) {
+          // satisfy linter
+        }
+      })();
+    }
+  };
+
+  /* Native HTML5 element property wrapping ----------------------------------- */
+  // Wrap native boolean attributes with getters that check both property and attribute
+  // The list is as followed:
+  // muted, defaultMuted, autoplay, controls, loop, playsinline
+  [
+  /**
+   * Get the value of `muted` from the media element. `muted` indicates
+   * that the volume for the media should be set to silent. This does not actually change
+   * the `volume` attribute.
+   *
+   * @method Html5#muted
+   * @return {boolean}
+   *         - True if the value of `volume` should be ignored and the audio set to silent.
+   *         - False if the value of `volume` should be used.
+   *
+   * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-muted}
+   */
+  'muted',
+  /**
+   * Get the value of `defaultMuted` from the media element. `defaultMuted` indicates
+   * whether the media should start muted or not. Only changes the default state of the
+   * media. `muted` and `defaultMuted` can have different values. {@link Html5#muted} indicates the
+   * current state.
+   *
+   * @method Html5#defaultMuted
+   * @return {boolean}
+   *         - The value of `defaultMuted` from the media element.
+   *         - True indicates that the media should start muted.
+   *         - False indicates that the media should not start muted
+   *
+   * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-defaultmuted}
+   */
+  'defaultMuted',
+  /**
+   * Get the value of `autoplay` from the media element. `autoplay` indicates
+   * that the media should start to play as soon as the page is ready.
+   *
+   * @method Html5#autoplay
+   * @return {boolean}
+   *         - The value of `autoplay` from the media element.
+   *         - True indicates that the media should start as soon as the page loads.
+   *         - False indicates that the media should not start as soon as the page loads.
+   *
+   * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#attr-media-autoplay}
+   */
+  'autoplay',
+  /**
+   * Get the value of `controls` from the media element. `controls` indicates
+   * whether the native media controls should be shown or hidden.
+   *
+   * @method Html5#controls
+   * @return {boolean}
+   *         - The value of `controls` from the media element.
+   *         - True indicates that native controls should be showing.
+   *         - False indicates that native controls should be hidden.
+   *
+   * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#attr-media-controls}
+   */
+  'controls',
+  /**
+   * Get the value of `loop` from the media element. `loop` indicates
+   * that the media should return to the start of the media and continue playing once
+   * it reaches the end.
+   *
+   * @method Html5#loop
+   * @return {boolean}
+   *         - The value of `loop` from the media element.
+   *         - True indicates that playback should seek back to start once
+   *           the end of a media is reached.
+   *         - False indicates that playback should not loop back to the start when the
+   *           end of the media is reached.
+   *
+   * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#attr-media-loop}
+   */
+  'loop',
+  /**
+   * Get the value of `playsinline` from the media element. `playsinline` indicates
+   * to the browser that non-fullscreen playback is preferred when fullscreen
+   * playback is the native default, such as in iOS Safari.
+   *
+   * @method Html5#playsinline
+   * @return {boolean}
+   *         - The value of `playsinline` from the media element.
+   *         - True indicates that the media should play inline.
+   *         - False indicates that the media should not play inline.
+   *
+   * @see [Spec]{@link https://html.spec.whatwg.org/#attr-video-playsinline}
+   */
+  'playsinline'].forEach(function (prop) {
+    Html5.prototype[prop] = function () {
+      return this.el_[prop] || this.el_.hasAttribute(prop);
+    };
+  });
+
+  // Wrap native boolean attributes with setters that set both property and attribute
+  // The list is as followed:
+  // setMuted, setDefaultMuted, setAutoplay, setLoop, setPlaysinline
+  // setControls is special-cased above
+  [
+  /**
+   * Set the value of `muted` on the media element. `muted` indicates that the current
+   * audio level should be silent.
+   *
+   * @method Html5#setMuted
+   * @param {boolean} muted
+   *        - True if the audio should be set to silent
+   *        - False otherwise
+   *
+   * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-muted}
+   */
+  'muted',
+  /**
+   * Set the value of `defaultMuted` on the media element. `defaultMuted` indicates that the current
+   * audio level should be silent, but will only effect the muted level on initial playback..
+   *
+   * @method Html5.prototype.setDefaultMuted
+   * @param {boolean} defaultMuted
+   *        - True if the audio should be set to silent
+   *        - False otherwise
+   *
+   * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-defaultmuted}
+   */
+  'defaultMuted',
+  /**
+   * Set the value of `autoplay` on the media element. `autoplay` indicates
+   * that the media should start to play as soon as the page is ready.
+   *
+   * @method Html5#setAutoplay
+   * @param {boolean} autoplay
+   *         - True indicates that the media should start as soon as the page loads.
+   *         - False indicates that the media should not start as soon as the page loads.
+   *
+   * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#attr-media-autoplay}
+   */
+  'autoplay',
+  /**
+   * Set the value of `loop` on the media element. `loop` indicates
+   * that the media should return to the start of the media and continue playing once
+   * it reaches the end.
+   *
+   * @method Html5#setLoop
+   * @param {boolean} loop
+   *         - True indicates that playback should seek back to start once
+   *           the end of a media is reached.
+   *         - False indicates that playback should not loop back to the start when the
+   *           end of the media is reached.
+   *
+   * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#attr-media-loop}
+   */
+  'loop',
+  /**
+   * Set the value of `playsinline` from the media element. `playsinline` indicates
+   * to the browser that non-fullscreen playback is preferred when fullscreen
+   * playback is the native default, such as in iOS Safari.
+   *
+   * @method Html5#setPlaysinline
+   * @param {boolean} playsinline
+   *         - True indicates that the media should play inline.
+   *         - False indicates that the media should not play inline.
+   *
+   * @see [Spec]{@link https://html.spec.whatwg.org/#attr-video-playsinline}
+   */
+  'playsinline'].forEach(function (prop) {
+    Html5.prototype['set' + toTitleCase$1(prop)] = function (v) {
+      this.el_[prop] = v;
+      if (v) {
+        this.el_.setAttribute(prop, prop);
+      } else {
+        this.el_.removeAttribute(prop);
+      }
+    };
+  });
+
+  // Wrap native properties with a getter
+  // The list is as followed
+  // paused, currentTime, buffered, volume, poster, preload, error, seeking
+  // seekable, ended, playbackRate, defaultPlaybackRate, disablePictureInPicture
+  // played, networkState, readyState, videoWidth, videoHeight, crossOrigin
+  [
+  /**
+   * Get the value of `paused` from the media element. `paused` indicates whether the media element
+   * is currently paused or not.
+   *
+   * @method Html5#paused
+   * @return {boolean}
+   *         The value of `paused` from the media element.
+   *
+   * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-paused}
+   */
+  'paused',
+  /**
+   * Get the value of `currentTime` from the media element. `currentTime` indicates
+   * the current second that the media is at in playback.
+   *
+   * @method Html5#currentTime
+   * @return {number}
+   *         The value of `currentTime` from the media element.
+   *
+   * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-currenttime}
+   */
+  'currentTime',
+  /**
+   * Get the value of `buffered` from the media element. `buffered` is a `TimeRange`
+   * object that represents the parts of the media that are already downloaded and
+   * available for playback.
+   *
+   * @method Html5#buffered
+   * @return {TimeRange}
+   *         The value of `buffered` from the media element.
+   *
+   * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-buffered}
+   */
+  'buffered',
+  /**
+   * Get the value of `volume` from the media element. `volume` indicates
+   * the current playback volume of audio for a media. `volume` will be a value from 0
+   * (silent) to 1 (loudest and default).
+   *
+   * @method Html5#volume
+   * @return {number}
+   *         The value of `volume` from the media element. Value will be between 0-1.
+   *
+   * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-a-volume}
+   */
+  'volume',
+  /**
+   * Get the value of `poster` from the media element. `poster` indicates
+   * that the url of an image file that can/will be shown when no media data is available.
+   *
+   * @method Html5#poster
+   * @return {string}
+   *         The value of `poster` from the media element. Value will be a url to an
+   *         image.
+   *
+   * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#attr-video-poster}
+   */
+  'poster',
+  /**
+   * Get the value of `preload` from the media element. `preload` indicates
+   * what should download before the media is interacted with. It can have the following
+   * values:
+   * - none: nothing should be downloaded
+   * - metadata: poster and the first few frames of the media may be downloaded to get
+   *   media dimensions and other metadata
+   * - auto: allow the media and metadata for the media to be downloaded before
+   *    interaction
+   *
+   * @method Html5#preload
+   * @return {string}
+   *         The value of `preload` from the media element. Will be 'none', 'metadata',
+   *         or 'auto'.
+   *
+   * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#attr-media-preload}
+   */
+  'preload',
+  /**
+   * Get the value of the `error` from the media element. `error` indicates any
+   * MediaError that may have occurred during playback. If error returns null there is no
+   * current error.
+   *
+   * @method Html5#error
+   * @return {MediaError|null}
+   *         The value of `error` from the media element. Will be `MediaError` if there
+   *         is a current error and null otherwise.
+   *
+   * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-error}
+   */
+  'error',
+  /**
+   * Get the value of `seeking` from the media element. `seeking` indicates whether the
+   * media is currently seeking to a new position or not.
+   *
+   * @method Html5#seeking
+   * @return {boolean}
+   *         - The value of `seeking` from the media element.
+   *         - True indicates that the media is currently seeking to a new position.
+   *         - False indicates that the media is not seeking to a new position at this time.
+   *
+   * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-seeking}
+   */
+  'seeking',
+  /**
+   * Get the value of `seekable` from the media element. `seekable` returns a
+   * `TimeRange` object indicating ranges of time that can currently be `seeked` to.
+   *
+   * @method Html5#seekable
+   * @return {TimeRange}
+   *         The value of `seekable` from the media element. A `TimeRange` object
+   *         indicating the current ranges of time that can be seeked to.
+   *
+   * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-seekable}
+   */
+  'seekable',
+  /**
+   * Get the value of `ended` from the media element. `ended` indicates whether
+   * the media has reached the end or not.
+   *
+   * @method Html5#ended
+   * @return {boolean}
+   *         - The value of `ended` from the media element.
+   *         - True indicates that the media has ended.
+   *         - False indicates that the media has not ended.
+   *
+   * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-ended}
+   */
+  'ended',
+  /**
+   * Get the value of `playbackRate` from the media element. `playbackRate` indicates
+   * the rate at which the media is currently playing back. Examples:
+   *   - if playbackRate is set to 2, media will play twice as fast.
+   *   - if playbackRate is set to 0.5, media will play half as fast.
+   *
+   * @method Html5#playbackRate
+   * @return {number}
+   *         The value of `playbackRate` from the media element. A number indicating
+   *         the current playback speed of the media, where 1 is normal speed.
+   *
+   * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-playbackrate}
+   */
+  'playbackRate',
+  /**
+   * Get the value of `defaultPlaybackRate` from the media element. `defaultPlaybackRate` indicates
+   * the rate at which the media is currently playing back. This value will not indicate the current
+   * `playbackRate` after playback has started, use {@link Html5#playbackRate} for that.
+   *
+   * Examples:
+   *   - if defaultPlaybackRate is set to 2, media will play twice as fast.
+   *   - if defaultPlaybackRate is set to 0.5, media will play half as fast.
+   *
+   * @method Html5.prototype.defaultPlaybackRate
+   * @return {number}
+   *         The value of `defaultPlaybackRate` from the media element. A number indicating
+   *         the current playback speed of the media, where 1 is normal speed.
+   *
+   * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-playbackrate}
+   */
+  'defaultPlaybackRate',
+  /**
+   * Get the value of 'disablePictureInPicture' from the video element.
+   *
+   * @method Html5#disablePictureInPicture
+   * @return {boolean} value
+   *         - The value of `disablePictureInPicture` from the video element.
+   *         - True indicates that the video can't be played in Picture-In-Picture mode
+   *         - False indicates that the video can be played in Picture-In-Picture mode
+   *
+   * @see [Spec]{@link https://w3c.github.io/picture-in-picture/#disable-pip}
+   */
+  'disablePictureInPicture',
+  /**
+   * Get the value of `played` from the media element. `played` returns a `TimeRange`
+   * object representing points in the media timeline that have been played.
+   *
+   * @method Html5#played
+   * @return {TimeRange}
+   *         The value of `played` from the media element. A `TimeRange` object indicating
+   *         the ranges of time that have been played.
+   *
+   * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-played}
+   */
+  'played',
+  /**
+   * Get the value of `networkState` from the media element. `networkState` indicates
+   * the current network state. It returns an enumeration from the following list:
+   * - 0: NETWORK_EMPTY
+   * - 1: NETWORK_IDLE
+   * - 2: NETWORK_LOADING
+   * - 3: NETWORK_NO_SOURCE
+   *
+   * @method Html5#networkState
+   * @return {number}
+   *         The value of `networkState` from the media element. This will be a number
+   *         from the list in the description.
+   *
+   * @see [Spec] {@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-networkstate}
+   */
+  'networkState',
+  /**
+   * Get the value of `readyState` from the media element. `readyState` indicates
+   * the current state of the media element. It returns an enumeration from the
+   * following list:
+   * - 0: HAVE_NOTHING
+   * - 1: HAVE_METADATA
+   * - 2: HAVE_CURRENT_DATA
+   * - 3: HAVE_FUTURE_DATA
+   * - 4: HAVE_ENOUGH_DATA
+   *
+   * @method Html5#readyState
+   * @return {number}
+   *         The value of `readyState` from the media element. This will be a number
+   *         from the list in the description.
+   *
+   * @see [Spec] {@link https://www.w3.org/TR/html5/embedded-content-0.html#ready-states}
+   */
+  'readyState',
+  /**
+   * Get the value of `videoWidth` from the video element. `videoWidth` indicates
+   * the current width of the video in css pixels.
+   *
+   * @method Html5#videoWidth
+   * @return {number}
+   *         The value of `videoWidth` from the video element. This will be a number
+   *         in css pixels.
+   *
+   * @see [Spec] {@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-video-videowidth}
+   */
+  'videoWidth',
+  /**
+   * Get the value of `videoHeight` from the video element. `videoHeight` indicates
+   * the current height of the video in css pixels.
+   *
+   * @method Html5#videoHeight
+   * @return {number}
+   *         The value of `videoHeight` from the video element. This will be a number
+   *         in css pixels.
+   *
+   * @see [Spec] {@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-video-videowidth}
+   */
+  'videoHeight',
+  /**
+   * Get the value of `crossOrigin` from the media element. `crossOrigin` indicates
+   * to the browser that should sent the cookies along with the requests for the
+   * different assets/playlists
+   *
+   * @method Html5#crossOrigin
+   * @return {string}
+   *         - anonymous indicates that the media should not sent cookies.
+   *         - use-credentials indicates that the media should sent cookies along the requests.
+   *
+   * @see [Spec]{@link https://html.spec.whatwg.org/#attr-media-crossorigin}
+   */
+  'crossOrigin'].forEach(function (prop) {
+    Html5.prototype[prop] = function () {
+      return this.el_[prop];
+    };
+  });
+
+  // Wrap native properties with a setter in this format:
+  // set + toTitleCase(name)
+  // The list is as follows:
+  // setVolume, setSrc, setPoster, setPreload, setPlaybackRate, setDefaultPlaybackRate,
+  // setDisablePictureInPicture, setCrossOrigin
+  [
+  /**
+   * Set the value of `volume` on the media element. `volume` indicates the current
+   * audio level as a percentage in decimal form. This means that 1 is 100%, 0.5 is 50%, and
+   * so on.
+   *
+   * @method Html5#setVolume
+   * @param {number} percentAsDecimal
+   *        The volume percent as a decimal. Valid range is from 0-1.
+   *
+   * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-a-volume}
+   */
+  'volume',
+  /**
+   * Set the value of `src` on the media element. `src` indicates the current
+   * {@link Tech~SourceObject} for the media.
+   *
+   * @method Html5#setSrc
+   * @param {Tech~SourceObject} src
+   *        The source object to set as the current source.
+   *
+   * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-src}
+   */
+  'src',
+  /**
+   * Set the value of `poster` on the media element. `poster` is the url to
+   * an image file that can/will be shown when no media data is available.
+   *
+   * @method Html5#setPoster
+   * @param {string} poster
+   *        The url to an image that should be used as the `poster` for the media
+   *        element.
+   *
+   * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#attr-media-poster}
+   */
+  'poster',
+  /**
+   * Set the value of `preload` on the media element. `preload` indicates
+   * what should download before the media is interacted with. It can have the following
+   * values:
+   * - none: nothing should be downloaded
+   * - metadata: poster and the first few frames of the media may be downloaded to get
+   *   media dimensions and other metadata
+   * - auto: allow the media and metadata for the media to be downloaded before
+   *    interaction
+   *
+   * @method Html5#setPreload
+   * @param {string} preload
+   *         The value of `preload` to set on the media element. Must be 'none', 'metadata',
+   *         or 'auto'.
+   *
+   * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#attr-media-preload}
+   */
+  'preload',
+  /**
+   * Set the value of `playbackRate` on the media element. `playbackRate` indicates
+   * the rate at which the media should play back. Examples:
+   *   - if playbackRate is set to 2, media will play twice as fast.
+   *   - if playbackRate is set to 0.5, media will play half as fast.
+   *
+   * @method Html5#setPlaybackRate
+   * @return {number}
+   *         The value of `playbackRate` from the media element. A number indicating
+   *         the current playback speed of the media, where 1 is normal speed.
+   *
+   * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-playbackrate}
+   */
+  'playbackRate',
+  /**
+   * Set the value of `defaultPlaybackRate` on the media element. `defaultPlaybackRate` indicates
+   * the rate at which the media should play back upon initial startup. Changing this value
+   * after a video has started will do nothing. Instead you should used {@link Html5#setPlaybackRate}.
+   *
+   * Example Values:
+   *   - if playbackRate is set to 2, media will play twice as fast.
+   *   - if playbackRate is set to 0.5, media will play half as fast.
+   *
+   * @method Html5.prototype.setDefaultPlaybackRate
+   * @return {number}
+   *         The value of `defaultPlaybackRate` from the media element. A number indicating
+   *         the current playback speed of the media, where 1 is normal speed.
+   *
+   * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-defaultplaybackrate}
+   */
+  'defaultPlaybackRate',
+  /**
+   * Prevents the browser from suggesting a Picture-in-Picture context menu
+   * or to request Picture-in-Picture automatically in some cases.
+   *
+   * @method Html5#setDisablePictureInPicture
+   * @param {boolean} value
+   *         The true value will disable Picture-in-Picture mode.
+   *
+   * @see [Spec]{@link https://w3c.github.io/picture-in-picture/#disable-pip}
+   */
+  'disablePictureInPicture',
+  /**
+   * Set the value of `crossOrigin` from the media element. `crossOrigin` indicates
+   * to the browser that should sent the cookies along with the requests for the
+   * different assets/playlists
+   *
+   * @method Html5#setCrossOrigin
+   * @param {string} crossOrigin
+   *         - anonymous indicates that the media should not sent cookies.
+   *         - use-credentials indicates that the media should sent cookies along the requests.
+   *
+   * @see [Spec]{@link https://html.spec.whatwg.org/#attr-media-crossorigin}
+   */
+  'crossOrigin'].forEach(function (prop) {
+    Html5.prototype['set' + toTitleCase$1(prop)] = function (v) {
+      this.el_[prop] = v;
+    };
+  });
+
+  // wrap native functions with a function
+  // The list is as follows:
+  // pause, load, play
+  [
+  /**
+   * A wrapper around the media elements `pause` function. This will call the `HTML5`
+   * media elements `pause` function.
+   *
+   * @method Html5#pause
+   * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-pause}
+   */
+  'pause',
+  /**
+   * A wrapper around the media elements `load` function. This will call the `HTML5`s
+   * media element `load` function.
+   *
+   * @method Html5#load
+   * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-load}
+   */
+  'load',
+  /**
+   * A wrapper around the media elements `play` function. This will call the `HTML5`s
+   * media element `play` function.
+   *
+   * @method Html5#play
+   * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-play}
+   */
+  'play'].forEach(function (prop) {
+    Html5.prototype[prop] = function () {
+      return this.el_[prop]();
+    };
+  });
+  Tech.withSourceHandlers(Html5);
+
+  /**
+   * Native source handler for Html5, simply passes the source to the media element.
+   *
+   * @property {Tech~SourceObject} source
+   *        The source object
+   *
+   * @property {Html5} tech
+   *        The instance of the HTML5 tech.
+   */
+  Html5.nativeSourceHandler = {};
+
+  /**
+   * Check if the media element can play the given mime type.
+   *
+   * @param {string} type
+   *        The mimetype to check
+   *
+   * @return {string}
+   *         'probably', 'maybe', or '' (empty string)
+   */
+  Html5.nativeSourceHandler.canPlayType = function (type) {
+    // IE without MediaPlayer throws an error (#519)
+    try {
+      return Html5.TEST_VID.canPlayType(type);
+    } catch (e) {
+      return '';
+    }
+  };
+
+  /**
+   * Check if the media element can handle a source natively.
+   *
+   * @param {Tech~SourceObject} source
+   *         The source object
+   *
+   * @param {Object} [options]
+   *         Options to be passed to the tech.
+   *
+   * @return {string}
+   *         'probably', 'maybe', or '' (empty string).
+   */
+  Html5.nativeSourceHandler.canHandleSource = function (source, options) {
+    // If a type was provided we should rely on that
+    if (source.type) {
+      return Html5.nativeSourceHandler.canPlayType(source.type);
+
+      // If no type, fall back to checking 'video/[EXTENSION]'
+    } else if (source.src) {
+      const ext = getFileExtension(source.src);
+      return Html5.nativeSourceHandler.canPlayType(`video/${ext}`);
+    }
+    return '';
+  };
+
+  /**
+   * Pass the source to the native media element.
+   *
+   * @param {Tech~SourceObject} source
+   *        The source object
+   *
+   * @param {Html5} tech
+   *        The instance of the Html5 tech
+   *
+   * @param {Object} [options]
+   *        The options to pass to the source
+   */
+  Html5.nativeSourceHandler.handleSource = function (source, tech, options) {
+    tech.setSrc(source.src);
+  };
+
+  /**
+   * A noop for the native dispose function, as cleanup is not needed.
+   */
+  Html5.nativeSourceHandler.dispose = function () {};
+
+  // Register the native source handler
+  Html5.registerSourceHandler(Html5.nativeSourceHandler);
+  Tech.registerTech('Html5', Html5);
+
+  /**
+   * @file player.js
+   */
+
+  // The following tech events are simply re-triggered
+  // on the player when they happen
+  const TECH_EVENTS_RETRIGGER = [
+  /**
+   * Fired while the user agent is downloading media data.
+   *
+   * @event Player#progress
+   * @type {Event}
+   */
+  /**
+   * Retrigger the `progress` event that was triggered by the {@link Tech}.
+   *
+   * @private
+   * @method Player#handleTechProgress_
+   * @fires Player#progress
+   * @listens Tech#progress
+   */
+  'progress',
+  /**
+   * Fires when the loading of an audio/video is aborted.
+   *
+   * @event Player#abort
+   * @type {Event}
+   */
+  /**
+   * Retrigger the `abort` event that was triggered by the {@link Tech}.
+   *
+   * @private
+   * @method Player#handleTechAbort_
+   * @fires Player#abort
+   * @listens Tech#abort
+   */
+  'abort',
+  /**
+   * Fires when the browser is intentionally not getting media data.
+   *
+   * @event Player#suspend
+   * @type {Event}
+   */
+  /**
+   * Retrigger the `suspend` event that was triggered by the {@link Tech}.
+   *
+   * @private
+   * @method Player#handleTechSuspend_
+   * @fires Player#suspend
+   * @listens Tech#suspend
+   */
+  'suspend',
+  /**
+   * Fires when the current playlist is empty.
+   *
+   * @event Player#emptied
+   * @type {Event}
+   */
+  /**
+   * Retrigger the `emptied` event that was triggered by the {@link Tech}.
+   *
+   * @private
+   * @method Player#handleTechEmptied_
+   * @fires Player#emptied
+   * @listens Tech#emptied
+   */
+  'emptied',
+  /**
+   * Fires when the browser is trying to get media data, but data is not available.
+   *
+   * @event Player#stalled
+   * @type {Event}
+   */
+  /**
+   * Retrigger the `stalled` event that was triggered by the {@link Tech}.
+   *
+   * @private
+   * @method Player#handleTechStalled_
+   * @fires Player#stalled
+   * @listens Tech#stalled
+   */
+  'stalled',
+  /**
+   * Fires when the browser has loaded meta data for the audio/video.
+   *
+   * @event Player#loadedmetadata
+   * @type {Event}
+   */
+  /**
+   * Retrigger the `loadedmetadata` event that was triggered by the {@link Tech}.
+   *
+   * @private
+   * @method Player#handleTechLoadedmetadata_
+   * @fires Player#loadedmetadata
+   * @listens Tech#loadedmetadata
+   */
+  'loadedmetadata',
+  /**
+   * Fires when the browser has loaded the current frame of the audio/video.
+   *
+   * @event Player#loadeddata
+   * @type {event}
+   */
+  /**
+   * Retrigger the `loadeddata` event that was triggered by the {@link Tech}.
+   *
+   * @private
+   * @method Player#handleTechLoaddeddata_
+   * @fires Player#loadeddata
+   * @listens Tech#loadeddata
+   */
+  'loadeddata',
+  /**
+   * Fires when the current playback position has changed.
+   *
+   * @event Player#timeupdate
+   * @type {event}
+   */
+  /**
+   * Retrigger the `timeupdate` event that was triggered by the {@link Tech}.
+   *
+   * @private
+   * @method Player#handleTechTimeUpdate_
+   * @fires Player#timeupdate
+   * @listens Tech#timeupdate
+   */
+  'timeupdate',
+  /**
+   * Fires when the video's intrinsic dimensions change
+   *
+   * @event Player#resize
+   * @type {event}
+   */
+  /**
+   * Retrigger the `resize` event that was triggered by the {@link Tech}.
+   *
+   * @private
+   * @method Player#handleTechResize_
+   * @fires Player#resize
+   * @listens Tech#resize
+   */
+  'resize',
+  /**
+   * Fires when the volume has been changed
+   *
+   * @event Player#volumechange
+   * @type {event}
+   */
+  /**
+   * Retrigger the `volumechange` event that was triggered by the {@link Tech}.
+   *
+   * @private
+   * @method Player#handleTechVolumechange_
+   * @fires Player#volumechange
+   * @listens Tech#volumechange
+   */
+  'volumechange',
+  /**
+   * Fires when the text track has been changed
+   *
+   * @event Player#texttrackchange
+   * @type {event}
+   */
+  /**
+   * Retrigger the `texttrackchange` event that was triggered by the {@link Tech}.
+   *
+   * @private
+   * @method Player#handleTechTexttrackchange_
+   * @fires Player#texttrackchange
+   * @listens Tech#texttrackchange
+   */
+  'texttrackchange'];
+
+  // events to queue when playback rate is zero
+  // this is a hash for the sole purpose of mapping non-camel-cased event names
+  // to camel-cased function names
+  const TECH_EVENTS_QUEUE = {
+    canplay: 'CanPlay',
+    canplaythrough: 'CanPlayThrough',
+    playing: 'Playing',
+    seeked: 'Seeked'
+  };
+  const BREAKPOINT_ORDER = ['tiny', 'xsmall', 'small', 'medium', 'large', 'xlarge', 'huge'];
+  const BREAKPOINT_CLASSES = {};
+
+  // grep: vjs-layout-tiny
+  // grep: vjs-layout-x-small
+  // grep: vjs-layout-small
+  // grep: vjs-layout-medium
+  // grep: vjs-layout-large
+  // grep: vjs-layout-x-large
+  // grep: vjs-layout-huge
+  BREAKPOINT_ORDER.forEach(k => {
+    const v = k.charAt(0) === 'x' ? `x-${k.substring(1)}` : k;
+    BREAKPOINT_CLASSES[k] = `vjs-layout-${v}`;
+  });
+  const DEFAULT_BREAKPOINTS = {
+    tiny: 210,
+    xsmall: 320,
+    small: 425,
+    medium: 768,
+    large: 1440,
+    xlarge: 2560,
+    huge: Infinity
+  };
+
+  /**
+   * An instance of the `Player` class is created when any of the Video.js setup methods
+   * are used to initialize a video.
+   *
+   * After an instance has been created it can be accessed globally in three ways:
+   * 1. By calling `videojs.getPlayer('example_video_1');`
+   * 2. By calling `videojs('example_video_1');` (not recommended)
+   * 2. By using it directly via `videojs.players.example_video_1;`
+   *
+   * @extends Component
+   * @global
+   */
+  class Player extends Component$1 {
+    /**
+     * Create an instance of this class.
+     *
+     * @param {Element} tag
+     *        The original video DOM element used for configuring options.
+     *
+     * @param {Object} [options]
+     *        Object of option names and values.
+     *
+     * @param {Function} [ready]
+     *        Ready callback function.
+     */
+    constructor(tag, options, ready) {
+      // Make sure tag ID exists
+      // also here.. probably better
+      tag.id = tag.id || options.id || `vjs_video_${newGUID()}`;
+
+      // Set Options
+      // The options argument overrides options set in the video tag
+      // which overrides globally set options.
+      // This latter part coincides with the load order
+      // (tag must exist before Player)
+      options = Object.assign(Player.getTagSettings(tag), options);
+
+      // Delay the initialization of children because we need to set up
+      // player properties first, and can't use `this` before `super()`
+      options.initChildren = false;
+
+      // Same with creating the element
+      options.createEl = false;
+
+      // don't auto mixin the evented mixin
+      options.evented = false;
+
+      // we don't want the player to report touch activity on itself
+      // see enableTouchActivity in Component
+      options.reportTouchActivity = false;
+
+      // If language is not set, get the closest lang attribute
+      if (!options.language) {
+        const closest = tag.closest('[lang]');
+        if (closest) {
+          options.language = closest.getAttribute('lang');
+        }
+      }
+
+      // Run base component initializing with new options
+      super(null, options, ready);
+
+      // Create bound methods for document listeners.
+      this.boundDocumentFullscreenChange_ = e => this.documentFullscreenChange_(e);
+      this.boundFullWindowOnEscKey_ = e => this.fullWindowOnEscKey(e);
+      this.boundUpdateStyleEl_ = e => this.updateStyleEl_(e);
+      this.boundApplyInitTime_ = e => this.applyInitTime_(e);
+      this.boundUpdateCurrentBreakpoint_ = e => this.updateCurrentBreakpoint_(e);
+      this.boundHandleTechClick_ = e => this.handleTechClick_(e);
+      this.boundHandleTechDoubleClick_ = e => this.handleTechDoubleClick_(e);
+      this.boundHandleTechTouchStart_ = e => this.handleTechTouchStart_(e);
+      this.boundHandleTechTouchMove_ = e => this.handleTechTouchMove_(e);
+      this.boundHandleTechTouchEnd_ = e => this.handleTechTouchEnd_(e);
+      this.boundHandleTechTap_ = e => this.handleTechTap_(e);
+
+      // default isFullscreen_ to false
+      this.isFullscreen_ = false;
+
+      // create logger
+      this.log = createLogger(this.id_);
+
+      // Hold our own reference to fullscreen api so it can be mocked in tests
+      this.fsApi_ = FullscreenApi;
+
+      // Tracks when a tech changes the poster
+      this.isPosterFromTech_ = false;
+
+      // Holds callback info that gets queued when playback rate is zero
+      // and a seek is happening
+      this.queuedCallbacks_ = [];
+
+      // Turn off API access because we're loading a new tech that might load asynchronously
+      this.isReady_ = false;
+
+      // Init state hasStarted_
+      this.hasStarted_ = false;
+
+      // Init state userActive_
+      this.userActive_ = false;
+
+      // Init debugEnabled_
+      this.debugEnabled_ = false;
+
+      // Init state audioOnlyMode_
+      this.audioOnlyMode_ = false;
+
+      // Init state audioPosterMode_
+      this.audioPosterMode_ = false;
+
+      // Init state audioOnlyCache_
+      this.audioOnlyCache_ = {
+        playerHeight: null,
+        hiddenChildren: []
+      };
+
+      // if the global option object was accidentally blown away by
+      // someone, bail early with an informative error
+      if (!this.options_ || !this.options_.techOrder || !this.options_.techOrder.length) {
+        throw new Error('No techOrder specified. Did you overwrite ' + 'videojs.options instead of just changing the ' + 'properties you want to override?');
+      }
+
+      // Store the original tag used to set options
+      this.tag = tag;
+
+      // Store the tag attributes used to restore html5 element
+      this.tagAttributes = tag && getAttributes(tag);
+
+      // Update current language
+      this.language(this.options_.language);
+
+      // Update Supported Languages
+      if (options.languages) {
+        // Normalise player option languages to lowercase
+        const languagesToLower = {};
+        Object.getOwnPropertyNames(options.languages).forEach(function (name) {
+          languagesToLower[name.toLowerCase()] = options.languages[name];
+        });
+        this.languages_ = languagesToLower;
+      } else {
+        this.languages_ = Player.prototype.options_.languages;
+      }
+      this.resetCache_();
+
+      // Set poster
+      /** @type string */
+      this.poster_ = options.poster || '';
+
+      // Set controls
+      /** @type {boolean} */
+      this.controls_ = !!options.controls;
+
+      // Original tag settings stored in options
+      // now remove immediately so native controls don't flash.
+      // May be turned back on by HTML5 tech if nativeControlsForTouch is true
+      tag.controls = false;
+      tag.removeAttribute('controls');
+      this.changingSrc_ = false;
+      this.playCallbacks_ = [];
+      this.playTerminatedQueue_ = [];
+
+      // the attribute overrides the option
+      if (tag.hasAttribute('autoplay')) {
+        this.autoplay(true);
+      } else {
+        // otherwise use the setter to validate and
+        // set the correct value.
+        this.autoplay(this.options_.autoplay);
+      }
+
+      // check plugins
+      if (options.plugins) {
+        Object.keys(options.plugins).forEach(name => {
+          if (typeof this[name] !== 'function') {
+            throw new Error(`plugin "${name}" does not exist`);
+          }
+        });
+      }
+
+      /*
+       * Store the internal state of scrubbing
+       *
+       * @private
+       * @return {Boolean} True if the user is scrubbing
+       */
+      this.scrubbing_ = false;
+      this.el_ = this.createEl();
+
+      // Make this an evented object and use `el_` as its event bus.
+      evented(this, {
+        eventBusKey: 'el_'
+      });
+
+      // listen to document and player fullscreenchange handlers so we receive those events
+      // before a user can receive them so we can update isFullscreen appropriately.
+      // make sure that we listen to fullscreenchange events before everything else to make sure that
+      // our isFullscreen method is updated properly for internal components as well as external.
+      if (this.fsApi_.requestFullscreen) {
+        on(document, this.fsApi_.fullscreenchange, this.boundDocumentFullscreenChange_);
+        this.on(this.fsApi_.fullscreenchange, this.boundDocumentFullscreenChange_);
+      }
+      if (this.fluid_) {
+        this.on(['playerreset', 'resize'], this.boundUpdateStyleEl_);
+      }
+      // We also want to pass the original player options to each component and plugin
+      // as well so they don't need to reach back into the player for options later.
+      // We also need to do another copy of this.options_ so we don't end up with
+      // an infinite loop.
+      const playerOptionsCopy = merge$2(this.options_);
+
+      // Load plugins
+      if (options.plugins) {
+        Object.keys(options.plugins).forEach(name => {
+          this[name](options.plugins[name]);
+        });
+      }
+
+      // Enable debug mode to fire debugon event for all plugins.
+      if (options.debug) {
+        this.debug(true);
+      }
+      this.options_.playerOptions = playerOptionsCopy;
+      this.middleware_ = [];
+      this.playbackRates(options.playbackRates);
+      if (options.experimentalSvgIcons) {
+        // Add SVG Sprite to the DOM
+        const parser = new window.DOMParser();
+        const parsedSVG = parser.parseFromString(icons, 'image/svg+xml');
+        const errorNode = parsedSVG.querySelector('parsererror');
+        if (errorNode) {
+          log$1.warn('Failed to load SVG Icons. Falling back to Font Icons.');
+          this.options_.experimentalSvgIcons = null;
+        } else {
+          const sprite = parsedSVG.documentElement;
+          sprite.style.display = 'none';
+          this.el_.appendChild(sprite);
+          this.addClass('vjs-svg-icons-enabled');
+        }
+      }
+      this.initChildren();
+
+      // Set isAudio based on whether or not an audio tag was used
+      this.isAudio(tag.nodeName.toLowerCase() === 'audio');
+
+      // Update controls className. Can't do this when the controls are initially
+      // set because the element doesn't exist yet.
+      if (this.controls()) {
+        this.addClass('vjs-controls-enabled');
+      } else {
+        this.addClass('vjs-controls-disabled');
+      }
+
+      // Set ARIA label and region role depending on player type
+      this.el_.setAttribute('role', 'region');
+      if (this.isAudio()) {
+        this.el_.setAttribute('aria-label', this.localize('Audio Player'));
+      } else {
+        this.el_.setAttribute('aria-label', this.localize('Video Player'));
+      }
+      if (this.isAudio()) {
+        this.addClass('vjs-audio');
+      }
+
+      // TODO: Make this smarter. Toggle user state between touching/mousing
+      // using events, since devices can have both touch and mouse events.
+      // TODO: Make this check be performed again when the window switches between monitors
+      // (See https://github.com/videojs/video.js/issues/5683)
+      if (TOUCH_ENABLED) {
+        this.addClass('vjs-touch-enabled');
+      }
+
+      // iOS Safari has broken hover handling
+      if (!IS_IOS) {
+        this.addClass('vjs-workinghover');
+      }
+
+      // Make player easily findable by ID
+      Player.players[this.id_] = this;
+
+      // Add a major version class to aid css in plugins
+      const majorVersion = version$5.split('.')[0];
+      this.addClass(`vjs-v${majorVersion}`);
+
+      // When the player is first initialized, trigger activity so components
+      // like the control bar show themselves if needed
+      this.userActive(true);
+      this.reportUserActivity();
+      this.one('play', e => this.listenForUserActivity_(e));
+      this.on('keydown', e => this.handleKeyDown(e));
+      this.on('languagechange', e => this.handleLanguagechange(e));
+      this.breakpoints(this.options_.breakpoints);
+      this.responsive(this.options_.responsive);
+
+      // Calling both the audio mode methods after the player is fully
+      // setup to be able to listen to the events triggered by them
+      this.on('ready', () => {
+        // Calling the audioPosterMode method first so that
+        // the audioOnlyMode can take precedence when both options are set to true
+        this.audioPosterMode(this.options_.audioPosterMode);
+        this.audioOnlyMode(this.options_.audioOnlyMode);
+      });
+    }
+
+    /**
+     * Destroys the video player and does any necessary cleanup.
+     *
+     * This is especially helpful if you are dynamically adding and removing videos
+     * to/from the DOM.
+     *
+     * @fires Player#dispose
+     */
+    dispose() {
+      /**
+       * Called when the player is being disposed of.
+       *
+       * @event Player#dispose
+       * @type {Event}
+       */
+      this.trigger('dispose');
+      // prevent dispose from being called twice
+      this.off('dispose');
+
+      // Make sure all player-specific document listeners are unbound. This is
+      off(document, this.fsApi_.fullscreenchange, this.boundDocumentFullscreenChange_);
+      off(document, 'keydown', this.boundFullWindowOnEscKey_);
+      if (this.styleEl_ && this.styleEl_.parentNode) {
+        this.styleEl_.parentNode.removeChild(this.styleEl_);
+        this.styleEl_ = null;
+      }
+
+      // Kill reference to this player
+      Player.players[this.id_] = null;
+      if (this.tag && this.tag.player) {
+        this.tag.player = null;
+      }
+      if (this.el_ && this.el_.player) {
+        this.el_.player = null;
+      }
+      if (this.tech_) {
+        this.tech_.dispose();
+        this.isPosterFromTech_ = false;
+        this.poster_ = '';
+      }
+      if (this.playerElIngest_) {
+        this.playerElIngest_ = null;
+      }
+      if (this.tag) {
+        this.tag = null;
+      }
+      clearCacheForPlayer(this);
+
+      // remove all event handlers for track lists
+      // all tracks and track listeners are removed on
+      // tech dispose
+      ALL.names.forEach(name => {
+        const props = ALL[name];
+        const list = this[props.getterName]();
+
+        // if it is not a native list
+        // we have to manually remove event listeners
+        if (list && list.off) {
+          list.off();
+        }
+      });
+
+      // the actual .el_ is removed here, or replaced if
+      super.dispose({
+        restoreEl: this.options_.restoreEl
+      });
+    }
+
+    /**
+     * Create the `Player`'s DOM element.
+     *
+     * @return {Element}
+     *         The DOM element that gets created.
+     */
+    createEl() {
+      let tag = this.tag;
+      let el;
+      let playerElIngest = this.playerElIngest_ = tag.parentNode && tag.parentNode.hasAttribute && tag.parentNode.hasAttribute('data-vjs-player');
+      const divEmbed = this.tag.tagName.toLowerCase() === 'video-js';
+      if (playerElIngest) {
+        el = this.el_ = tag.parentNode;
+      } else if (!divEmbed) {
+        el = this.el_ = super.createEl('div');
+      }
+
+      // Copy over all the attributes from the tag, including ID and class
+      // ID will now reference player box, not the video tag
+      const attrs = getAttributes(tag);
+      if (divEmbed) {
+        el = this.el_ = tag;
+        tag = this.tag = document.createElement('video');
+        while (el.children.length) {
+          tag.appendChild(el.firstChild);
+        }
+        if (!hasClass(el, 'video-js')) {
+          addClass(el, 'video-js');
+        }
+        el.appendChild(tag);
+        playerElIngest = this.playerElIngest_ = el;
+        // move properties over from our custom `video-js` element
+        // to our new `video` element. This will move things like
+        // `src` or `controls` that were set via js before the player
+        // was initialized.
+        Object.keys(el).forEach(k => {
+          try {
+            tag[k] = el[k];
+          } catch (e) {
+            // we got a a property like outerHTML which we can't actually copy, ignore it
+          }
+        });
+      }
+
+      // set tabindex to -1 to remove the video element from the focus order
+      tag.setAttribute('tabindex', '-1');
+      attrs.tabindex = '-1';
+
+      // Workaround for #4583 on Chrome (on Windows) with JAWS.
+      // See https://github.com/FreedomScientific/VFO-standards-support/issues/78
+      // Note that we can't detect if JAWS is being used, but this ARIA attribute
+      // doesn't change behavior of Chrome if JAWS is not being used
+      if (IS_CHROME && IS_WINDOWS) {
+        tag.setAttribute('role', 'application');
+        attrs.role = 'application';
+      }
+
+      // Remove width/height attrs from tag so CSS can make it 100% width/height
+      tag.removeAttribute('width');
+      tag.removeAttribute('height');
+      if ('width' in attrs) {
+        delete attrs.width;
+      }
+      if ('height' in attrs) {
+        delete attrs.height;
+      }
+      Object.getOwnPropertyNames(attrs).forEach(function (attr) {
+        // don't copy over the class attribute to the player element when we're in a div embed
+        // the class is already set up properly in the divEmbed case
+        // and we want to make sure that the `video-js` class doesn't get lost
+        if (!(divEmbed && attr === 'class')) {
+          el.setAttribute(attr, attrs[attr]);
+        }
+        if (divEmbed) {
+          tag.setAttribute(attr, attrs[attr]);
+        }
+      });
+
+      // Update tag id/class for use as HTML5 playback tech
+      // Might think we should do this after embedding in container so .vjs-tech class
+      // doesn't flash 100% width/height, but class only applies with .video-js parent
+      tag.playerId = tag.id;
+      tag.id += '_html5_api';
+      tag.className = 'vjs-tech';
+
+      // Make player findable on elements
+      tag.player = el.player = this;
+      // Default state of video is paused
+      this.addClass('vjs-paused');
+      const deviceClassNames = ['IS_SMART_TV', 'IS_TIZEN', 'IS_WEBOS', 'IS_ANDROID', 'IS_IPAD', 'IS_IPHONE'].filter(key => browser[key]).map(key => {
+        return 'vjs-device-' + key.substring(3).toLowerCase().replace(/\_/g, '-');
+      });
+      this.addClass(...deviceClassNames);
+
+      // Add a style element in the player that we'll use to set the width/height
+      // of the player in a way that's still overridable by CSS, just like the
+      // video element
+      if (window.VIDEOJS_NO_DYNAMIC_STYLE !== true) {
+        this.styleEl_ = createStyleElement('vjs-styles-dimensions');
+        const defaultsStyleEl = $('.vjs-styles-defaults');
+        const head = $('head');
+        head.insertBefore(this.styleEl_, defaultsStyleEl ? defaultsStyleEl.nextSibling : head.firstChild);
+      }
+      this.fill_ = false;
+      this.fluid_ = false;
+
+      // Pass in the width/height/aspectRatio options which will update the style el
+      this.width(this.options_.width);
+      this.height(this.options_.height);
+      this.fill(this.options_.fill);
+      this.fluid(this.options_.fluid);
+      this.aspectRatio(this.options_.aspectRatio);
+      // support both crossOrigin and crossorigin to reduce confusion and issues around the name
+      this.crossOrigin(this.options_.crossOrigin || this.options_.crossorigin);
+
+      // Hide any links within the video/audio tag,
+      // because IE doesn't hide them completely from screen readers.
+      const links = tag.getElementsByTagName('a');
+      for (let i = 0; i < links.length; i++) {
+        const linkEl = links.item(i);
+        addClass(linkEl, 'vjs-hidden');
+        linkEl.setAttribute('hidden', 'hidden');
+      }
+
+      // insertElFirst seems to cause the networkState to flicker from 3 to 2, so
+      // keep track of the original for later so we can know if the source originally failed
+      tag.initNetworkState_ = tag.networkState;
+
+      // Wrap video tag in div (el/box) container
+      if (tag.parentNode && !playerElIngest) {
+        tag.parentNode.insertBefore(el, tag);
+      }
+
+      // insert the tag as the first child of the player element
+      // then manually add it to the children array so that this.addChild
+      // will work properly for other components
+      //
+      // Breaks iPhone, fixed in HTML5 setup.
+      prependTo(tag, el);
+      this.children_.unshift(tag);
+
+      // Set lang attr on player to ensure CSS :lang() in consistent with player
+      // if it's been set to something different to the doc
+      this.el_.setAttribute('lang', this.language_);
+      this.el_.setAttribute('translate', 'no');
+      this.el_ = el;
+      return el;
+    }
+
+    /**
+     * Get or set the `Player`'s crossOrigin option. For the HTML5 player, this
+     * sets the `crossOrigin` property on the `<video>` tag to control the CORS
+     * behavior.
+     *
+     * @see [Video Element Attributes]{@link https://developer.mozilla.org/en-US/docs/Web/HTML/Element/video#attr-crossorigin}
+     *
+     * @param {string|null} [value]
+     *        The value to set the `Player`'s crossOrigin to. If an argument is
+     *        given, must be one of `'anonymous'` or `'use-credentials'`, or 'null'.
+     *
+     * @return {string|null|undefined}
+     *         - The current crossOrigin value of the `Player` when getting.
+     *         - undefined when setting
+     */
+    crossOrigin(value) {
+      // `null` can be set to unset a value
+      if (typeof value === 'undefined') {
+        return this.techGet_('crossOrigin');
+      }
+      if (value !== null && value !== 'anonymous' && value !== 'use-credentials') {
+        log$1.warn(`crossOrigin must be null,  "anonymous" or "use-credentials", given "${value}"`);
+        return;
+      }
+      this.techCall_('setCrossOrigin', value);
+      if (this.posterImage) {
+        this.posterImage.crossOrigin(value);
+      }
+      return;
+    }
+
+    /**
+     * A getter/setter for the `Player`'s width. Returns the player's configured value.
+     * To get the current width use `currentWidth()`.
+     *
+     * @param {number|string} [value]
+     *        CSS value to set the `Player`'s width to.
+     *
+     * @return {number|undefined}
+     *         - The current width of the `Player` when getting.
+     *         - Nothing when setting
+     */
+    width(value) {
+      return this.dimension('width', value);
+    }
+
+    /**
+     * A getter/setter for the `Player`'s height. Returns the player's configured value.
+     * To get the current height use `currentheight()`.
+     *
+     * @param {number|string} [value]
+     *        CSS value to set the `Player`'s height to.
+     *
+     * @return {number|undefined}
+     *         - The current height of the `Player` when getting.
+     *         - Nothing when setting
+     */
+    height(value) {
+      return this.dimension('height', value);
+    }
+
+    /**
+     * A getter/setter for the `Player`'s width & height.
+     *
+     * @param {string} dimension
+     *        This string can be:
+     *        - 'width'
+     *        - 'height'
+     *
+     * @param {number|string} [value]
+     *        Value for dimension specified in the first argument.
+     *
+     * @return {number}
+     *         The dimension arguments value when getting (width/height).
+     */
+    dimension(dimension, value) {
+      const privDimension = dimension + '_';
+      if (value === undefined) {
+        return this[privDimension] || 0;
+      }
+      if (value === '' || value === 'auto') {
+        // If an empty string is given, reset the dimension to be automatic
+        this[privDimension] = undefined;
+        this.updateStyleEl_();
+        return;
+      }
+      const parsedVal = parseFloat(value);
+      if (isNaN(parsedVal)) {
+        log$1.error(`Improper value "${value}" supplied for for ${dimension}`);
+        return;
+      }
+      this[privDimension] = parsedVal;
+      this.updateStyleEl_();
+    }
+
+    /**
+     * A getter/setter/toggler for the vjs-fluid `className` on the `Player`.
+     *
+     * Turning this on will turn off fill mode.
+     *
+     * @param {boolean} [bool]
+     *        - A value of true adds the class.
+     *        - A value of false removes the class.
+     *        - No value will be a getter.
+     *
+     * @return {boolean|undefined}
+     *         - The value of fluid when getting.
+     *         - `undefined` when setting.
+     */
+    fluid(bool) {
+      if (bool === undefined) {
+        return !!this.fluid_;
+      }
+      this.fluid_ = !!bool;
+      if (isEvented(this)) {
+        this.off(['playerreset', 'resize'], this.boundUpdateStyleEl_);
+      }
+      if (bool) {
+        this.addClass('vjs-fluid');
+        this.fill(false);
+        addEventedCallback(this, () => {
+          this.on(['playerreset', 'resize'], this.boundUpdateStyleEl_);
+        });
+      } else {
+        this.removeClass('vjs-fluid');
+      }
+      this.updateStyleEl_();
+    }
+
+    /**
+     * A getter/setter/toggler for the vjs-fill `className` on the `Player`.
+     *
+     * Turning this on will turn off fluid mode.
+     *
+     * @param {boolean} [bool]
+     *        - A value of true adds the class.
+     *        - A value of false removes the class.
+     *        - No value will be a getter.
+     *
+     * @return {boolean|undefined}
+     *         - The value of fluid when getting.
+     *         - `undefined` when setting.
+     */
+    fill(bool) {
+      if (bool === undefined) {
+        return !!this.fill_;
+      }
+      this.fill_ = !!bool;
+      if (bool) {
+        this.addClass('vjs-fill');
+        this.fluid(false);
+      } else {
+        this.removeClass('vjs-fill');
+      }
+    }
+
+    /**
+     * Get/Set the aspect ratio
+     *
+     * @param {string} [ratio]
+     *        Aspect ratio for player
+     *
+     * @return {string|undefined}
+     *         returns the current aspect ratio when getting
+     */
+
+    /**
+     * A getter/setter for the `Player`'s aspect ratio.
+     *
+     * @param {string} [ratio]
+     *        The value to set the `Player`'s aspect ratio to.
+     *
+     * @return {string|undefined}
+     *         - The current aspect ratio of the `Player` when getting.
+     *         - undefined when setting
+     */
+    aspectRatio(ratio) {
+      if (ratio === undefined) {
+        return this.aspectRatio_;
+      }
+
+      // Check for width:height format
+      if (!/^\d+\:\d+$/.test(ratio)) {
+        throw new Error('Improper value supplied for aspect ratio. The format should be width:height, for example 16:9.');
+      }
+      this.aspectRatio_ = ratio;
+
+      // We're assuming if you set an aspect ratio you want fluid mode,
+      // because in fixed mode you could calculate width and height yourself.
+      this.fluid(true);
+      this.updateStyleEl_();
+    }
+
+    /**
+     * Update styles of the `Player` element (height, width and aspect ratio).
+     *
+     * @private
+     * @listens Tech#loadedmetadata
+     */
+    updateStyleEl_() {
+      if (window.VIDEOJS_NO_DYNAMIC_STYLE === true) {
+        const width = typeof this.width_ === 'number' ? this.width_ : this.options_.width;
+        const height = typeof this.height_ === 'number' ? this.height_ : this.options_.height;
+        const techEl = this.tech_ && this.tech_.el();
+        if (techEl) {
+          if (width >= 0) {
+            techEl.width = width;
+          }
+          if (height >= 0) {
+            techEl.height = height;
+          }
+        }
+        return;
+      }
+      let width;
+      let height;
+      let aspectRatio;
+      let idClass;
+
+      // The aspect ratio is either used directly or to calculate width and height.
+      if (this.aspectRatio_ !== undefined && this.aspectRatio_ !== 'auto') {
+        // Use any aspectRatio that's been specifically set
+        aspectRatio = this.aspectRatio_;
+      } else if (this.videoWidth() > 0) {
+        // Otherwise try to get the aspect ratio from the video metadata
+        aspectRatio = this.videoWidth() + ':' + this.videoHeight();
+      } else {
+        // Or use a default. The video element's is 2:1, but 16:9 is more common.
+        aspectRatio = '16:9';
+      }
+
+      // Get the ratio as a decimal we can use to calculate dimensions
+      const ratioParts = aspectRatio.split(':');
+      const ratioMultiplier = ratioParts[1] / ratioParts[0];
+      if (this.width_ !== undefined) {
+        // Use any width that's been specifically set
+        width = this.width_;
+      } else if (this.height_ !== undefined) {
+        // Or calculate the width from the aspect ratio if a height has been set
+        width = this.height_ / ratioMultiplier;
+      } else {
+        // Or use the video's metadata, or use the video el's default of 300
+        width = this.videoWidth() || 300;
+      }
+      if (this.height_ !== undefined) {
+        // Use any height that's been specifically set
+        height = this.height_;
+      } else {
+        // Otherwise calculate the height from the ratio and the width
+        height = width * ratioMultiplier;
+      }
+
+      // Ensure the CSS class is valid by starting with an alpha character
+      if (/^[^a-zA-Z]/.test(this.id())) {
+        idClass = 'dimensions-' + this.id();
+      } else {
+        idClass = this.id() + '-dimensions';
+      }
+
+      // Ensure the right class is still on the player for the style element
+      this.addClass(idClass);
+      setTextContent(this.styleEl_, `
+      .${idClass} {
+        width: ${width}px;
+        height: ${height}px;
+      }
+
+      .${idClass}.vjs-fluid:not(.vjs-audio-only-mode) {
+        padding-top: ${ratioMultiplier * 100}%;
+      }
+    `);
+    }
+
+    /**
+     * Load/Create an instance of playback {@link Tech} including element
+     * and API methods. Then append the `Tech` element in `Player` as a child.
+     *
+     * @param {string} techName
+     *        name of the playback technology
+     *
+     * @param {string} source
+     *        video source
+     *
+     * @private
+     */
+    loadTech_(techName, source) {
+      // Pause and remove current playback technology
+      if (this.tech_) {
+        this.unloadTech_();
+      }
+      const titleTechName = toTitleCase$1(techName);
+      const camelTechName = techName.charAt(0).toLowerCase() + techName.slice(1);
+
+      // get rid of the HTML5 video tag as soon as we are using another tech
+      if (titleTechName !== 'Html5' && this.tag) {
+        Tech.getTech('Html5').disposeMediaElement(this.tag);
+        this.tag.player = null;
+        this.tag = null;
+      }
+      this.techName_ = titleTechName;
+
+      // Turn off API access because we're loading a new tech that might load asynchronously
+      this.isReady_ = false;
+      let autoplay = this.autoplay();
+
+      // if autoplay is a string (or `true` with normalizeAutoplay: true) we pass false to the tech
+      // because the player is going to handle autoplay on `loadstart`
+      if (typeof this.autoplay() === 'string' || this.autoplay() === true && this.options_.normalizeAutoplay) {
+        autoplay = false;
+      }
+
+      // Grab tech-specific options from player options and add source and parent element to use.
+      const techOptions = {
+        source,
+        autoplay,
+        'nativeControlsForTouch': this.options_.nativeControlsForTouch,
+        'playerId': this.id(),
+        'techId': `${this.id()}_${camelTechName}_api`,
+        'playsinline': this.options_.playsinline,
+        'preload': this.options_.preload,
+        'loop': this.options_.loop,
+        'disablePictureInPicture': this.options_.disablePictureInPicture,
+        'muted': this.options_.muted,
+        'poster': this.poster(),
+        'language': this.language(),
+        'playerElIngest': this.playerElIngest_ || false,
+        'vtt.js': this.options_['vtt.js'],
+        'canOverridePoster': !!this.options_.techCanOverridePoster,
+        'enableSourceset': this.options_.enableSourceset
+      };
+      ALL.names.forEach(name => {
+        const props = ALL[name];
+        techOptions[props.getterName] = this[props.privateName];
+      });
+      Object.assign(techOptions, this.options_[titleTechName]);
+      Object.assign(techOptions, this.options_[camelTechName]);
+      Object.assign(techOptions, this.options_[techName.toLowerCase()]);
+      if (this.tag) {
+        techOptions.tag = this.tag;
+      }
+      if (source && source.src === this.cache_.src && this.cache_.currentTime > 0) {
+        techOptions.startTime = this.cache_.currentTime;
+      }
+
+      // Initialize tech instance
+      const TechClass = Tech.getTech(techName);
+      if (!TechClass) {
+        throw new Error(`No Tech named '${titleTechName}' exists! '${titleTechName}' should be registered using videojs.registerTech()'`);
+      }
+      this.tech_ = new TechClass(techOptions);
+
+      // player.triggerReady is always async, so don't need this to be async
+      this.tech_.ready(bind_(this, this.handleTechReady_), true);
+      textTrackConverter.jsonToTextTracks(this.textTracksJson_ || [], this.tech_);
+
+      // Listen to all HTML5-defined events and trigger them on the player
+      TECH_EVENTS_RETRIGGER.forEach(event => {
+        this.on(this.tech_, event, e => this[`handleTech${toTitleCase$1(event)}_`](e));
+      });
+      Object.keys(TECH_EVENTS_QUEUE).forEach(event => {
+        this.on(this.tech_, event, eventObj => {
+          if (this.tech_.playbackRate() === 0 && this.tech_.seeking()) {
+            this.queuedCallbacks_.push({
+              callback: this[`handleTech${TECH_EVENTS_QUEUE[event]}_`].bind(this),
+              event: eventObj
+            });
+            return;
+          }
+          this[`handleTech${TECH_EVENTS_QUEUE[event]}_`](eventObj);
+        });
+      });
+      this.on(this.tech_, 'loadstart', e => this.handleTechLoadStart_(e));
+      this.on(this.tech_, 'sourceset', e => this.handleTechSourceset_(e));
+      this.on(this.tech_, 'waiting', e => this.handleTechWaiting_(e));
+      this.on(this.tech_, 'ended', e => this.handleTechEnded_(e));
+      this.on(this.tech_, 'seeking', e => this.handleTechSeeking_(e));
+      this.on(this.tech_, 'play', e => this.handleTechPlay_(e));
+      this.on(this.tech_, 'pause', e => this.handleTechPause_(e));
+      this.on(this.tech_, 'durationchange', e => this.handleTechDurationChange_(e));
+      this.on(this.tech_, 'fullscreenchange', (e, data) => this.handleTechFullscreenChange_(e, data));
+      this.on(this.tech_, 'fullscreenerror', (e, err) => this.handleTechFullscreenError_(e, err));
+      this.on(this.tech_, 'enterpictureinpicture', e => this.handleTechEnterPictureInPicture_(e));
+      this.on(this.tech_, 'leavepictureinpicture', e => this.handleTechLeavePictureInPicture_(e));
+      this.on(this.tech_, 'error', e => this.handleTechError_(e));
+      this.on(this.tech_, 'posterchange', e => this.handleTechPosterChange_(e));
+      this.on(this.tech_, 'textdata', e => this.handleTechTextData_(e));
+      this.on(this.tech_, 'ratechange', e => this.handleTechRateChange_(e));
+      this.on(this.tech_, 'loadedmetadata', this.boundUpdateStyleEl_);
+      this.usingNativeControls(this.techGet_('controls'));
+      if (this.controls() && !this.usingNativeControls()) {
+        this.addTechControlsListeners_();
+      }
+
+      // Add the tech element in the DOM if it was not already there
+      // Make sure to not insert the original video element if using Html5
+      if (this.tech_.el().parentNode !== this.el() && (titleTechName !== 'Html5' || !this.tag)) {
+        prependTo(this.tech_.el(), this.el());
+      }
+
+      // Get rid of the original video tag reference after the first tech is loaded
+      if (this.tag) {
+        this.tag.player = null;
+        this.tag = null;
+      }
+    }
+
+    /**
+     * Unload and dispose of the current playback {@link Tech}.
+     *
+     * @private
+     */
+    unloadTech_() {
+      // Save the current text tracks so that we can reuse the same text tracks with the next tech
+      ALL.names.forEach(name => {
+        const props = ALL[name];
+        this[props.privateName] = this[props.getterName]();
+      });
+      this.textTracksJson_ = textTrackConverter.textTracksToJson(this.tech_);
+      this.isReady_ = false;
+      this.tech_.dispose();
+      this.tech_ = false;
+      if (this.isPosterFromTech_) {
+        this.poster_ = '';
+        this.trigger('posterchange');
+      }
+      this.isPosterFromTech_ = false;
+    }
+
+    /**
+     * Return a reference to the current {@link Tech}.
+     * It will print a warning by default about the danger of using the tech directly
+     * but any argument that is passed in will silence the warning.
+     *
+     * @param {*} [safety]
+     *        Anything passed in to silence the warning
+     *
+     * @return {Tech}
+     *         The Tech
+     */
+    tech(safety) {
+      if (safety === undefined) {
+        log$1.warn('Using the tech directly can be dangerous. I hope you know what you\'re doing.\n' + 'See https://github.com/videojs/video.js/issues/2617 for more info.\n');
+      }
+      return this.tech_;
+    }
+
+    /**
+     * An object that contains Video.js version.
+     *
+     * @typedef {Object} PlayerVersion
+     *
+     * @property {string} 'video.js' - Video.js version
+     */
+
+    /**
+     * Returns an object with Video.js version.
+     *
+     * @return {PlayerVersion}
+     *          An object with Video.js version.
+     */
+    version() {
+      return {
+        'video.js': version$5
+      };
+    }
+
+    /**
+     * Set up click and touch listeners for the playback element
+     *
+     * - On desktops: a click on the video itself will toggle playback
+     * - On mobile devices: a click on the video toggles controls
+     *   which is done by toggling the user state between active and
+     *   inactive
+     * - A tap can signal that a user has become active or has become inactive
+     *   e.g. a quick tap on an iPhone movie should reveal the controls. Another
+     *   quick tap should hide them again (signaling the user is in an inactive
+     *   viewing state)
+     * - In addition to this, we still want the user to be considered inactive after
+     *   a few seconds of inactivity.
+     *
+     * > Note: the only part of iOS interaction we can't mimic with this setup
+     * is a touch and hold on the video element counting as activity in order to
+     * keep the controls showing, but that shouldn't be an issue. A touch and hold
+     * on any controls will still keep the user active
+     *
+     * @private
+     */
+    addTechControlsListeners_() {
+      // Make sure to remove all the previous listeners in case we are called multiple times.
+      this.removeTechControlsListeners_();
+      this.on(this.tech_, 'click', this.boundHandleTechClick_);
+      this.on(this.tech_, 'dblclick', this.boundHandleTechDoubleClick_);
+
+      // If the controls were hidden we don't want that to change without a tap event
+      // so we'll check if the controls were already showing before reporting user
+      // activity
+      this.on(this.tech_, 'touchstart', this.boundHandleTechTouchStart_);
+      this.on(this.tech_, 'touchmove', this.boundHandleTechTouchMove_);
+      this.on(this.tech_, 'touchend', this.boundHandleTechTouchEnd_);
+
+      // The tap listener needs to come after the touchend listener because the tap
+      // listener cancels out any reportedUserActivity when setting userActive(false)
+      this.on(this.tech_, 'tap', this.boundHandleTechTap_);
+    }
+
+    /**
+     * Remove the listeners used for click and tap controls. This is needed for
+     * toggling to controls disabled, where a tap/touch should do nothing.
+     *
+     * @private
+     */
+    removeTechControlsListeners_() {
+      // We don't want to just use `this.off()` because there might be other needed
+      // listeners added by techs that extend this.
+      this.off(this.tech_, 'tap', this.boundHandleTechTap_);
+      this.off(this.tech_, 'touchstart', this.boundHandleTechTouchStart_);
+      this.off(this.tech_, 'touchmove', this.boundHandleTechTouchMove_);
+      this.off(this.tech_, 'touchend', this.boundHandleTechTouchEnd_);
+      this.off(this.tech_, 'click', this.boundHandleTechClick_);
+      this.off(this.tech_, 'dblclick', this.boundHandleTechDoubleClick_);
+    }
+
+    /**
+     * Player waits for the tech to be ready
+     *
+     * @private
+     */
+    handleTechReady_() {
+      this.triggerReady();
+
+      // Keep the same volume as before
+      if (this.cache_.volume) {
+        this.techCall_('setVolume', this.cache_.volume);
+      }
+
+      // Look if the tech found a higher resolution poster while loading
+      this.handleTechPosterChange_();
+
+      // Update the duration if available
+      this.handleTechDurationChange_();
+    }
+
+    /**
+     * Retrigger the `loadstart` event that was triggered by the {@link Tech}.
+     *
+     * @fires Player#loadstart
+     * @listens Tech#loadstart
+     * @private
+     */
+    handleTechLoadStart_() {
+      // TODO: Update to use `emptied` event instead. See #1277.
+
+      this.removeClass('vjs-ended', 'vjs-seeking');
+
+      // reset the error state
+      this.error(null);
+
+      // Update the duration
+      this.handleTechDurationChange_();
+      if (!this.paused()) {
+        /**
+         * Fired when the user agent begins looking for media data
+         *
+         * @event Player#loadstart
+         * @type {Event}
+         */
+        this.trigger('loadstart');
+      } else {
+        // reset the hasStarted state
+        this.hasStarted(false);
+        this.trigger('loadstart');
+      }
+
+      // autoplay happens after loadstart for the browser,
+      // so we mimic that behavior
+      this.manualAutoplay_(this.autoplay() === true && this.options_.normalizeAutoplay ? 'play' : this.autoplay());
+    }
+
+    /**
+     * Handle autoplay string values, rather than the typical boolean
+     * values that should be handled by the tech. Note that this is not
+     * part of any specification. Valid values and what they do can be
+     * found on the autoplay getter at Player#autoplay()
+     */
+    manualAutoplay_(type) {
+      if (!this.tech_ || typeof type !== 'string') {
+        return;
+      }
+
+      // Save original muted() value, set muted to true, and attempt to play().
+      // On promise rejection, restore muted from saved value
+      const resolveMuted = () => {
+        const previouslyMuted = this.muted();
+        this.muted(true);
+        const restoreMuted = () => {
+          this.muted(previouslyMuted);
+        };
+
+        // restore muted on play terminatation
+        this.playTerminatedQueue_.push(restoreMuted);
+        const mutedPromise = this.play();
+        if (!isPromise(mutedPromise)) {
+          return;
+        }
+        return mutedPromise.catch(err => {
+          restoreMuted();
+          throw new Error(`Rejection at manualAutoplay. Restoring muted value. ${err ? err : ''}`);
+        });
+      };
+      let promise;
+
+      // if muted defaults to true
+      // the only thing we can do is call play
+      if (type === 'any' && !this.muted()) {
+        promise = this.play();
+        if (isPromise(promise)) {
+          promise = promise.catch(resolveMuted);
+        }
+      } else if (type === 'muted' && !this.muted()) {
+        promise = resolveMuted();
+      } else {
+        promise = this.play();
+      }
+      if (!isPromise(promise)) {
+        return;
+      }
+      return promise.then(() => {
+        this.trigger({
+          type: 'autoplay-success',
+          autoplay: type
+        });
+      }).catch(() => {
+        this.trigger({
+          type: 'autoplay-failure',
+          autoplay: type
+        });
+      });
+    }
+
+    /**
+     * Update the internal source caches so that we return the correct source from
+     * `src()`, `currentSource()`, and `currentSources()`.
+     *
+     * > Note: `currentSources` will not be updated if the source that is passed in exists
+     *         in the current `currentSources` cache.
+     *
+     *
+     * @param {Tech~SourceObject} srcObj
+     *        A string or object source to update our caches to.
+     */
+    updateSourceCaches_(srcObj = '') {
+      let src = srcObj;
+      let type = '';
+      if (typeof src !== 'string') {
+        src = srcObj.src;
+        type = srcObj.type;
+      }
+
+      // make sure all the caches are set to default values
+      // to prevent null checking
+      this.cache_.source = this.cache_.source || {};
+      this.cache_.sources = this.cache_.sources || [];
+
+      // try to get the type of the src that was passed in
+      if (src && !type) {
+        type = findMimetype(this, src);
+      }
+
+      // update `currentSource` cache always
+      this.cache_.source = merge$2({}, srcObj, {
+        src,
+        type
+      });
+      const matchingSources = this.cache_.sources.filter(s => s.src && s.src === src);
+      const sourceElSources = [];
+      const sourceEls = this.$$('source');
+      const matchingSourceEls = [];
+      for (let i = 0; i < sourceEls.length; i++) {
+        const sourceObj = getAttributes(sourceEls[i]);
+        sourceElSources.push(sourceObj);
+        if (sourceObj.src && sourceObj.src === src) {
+          matchingSourceEls.push(sourceObj.src);
+        }
+      }
+
+      // if we have matching source els but not matching sources
+      // the current source cache is not up to date
+      if (matchingSourceEls.length && !matchingSources.length) {
+        this.cache_.sources = sourceElSources;
+        // if we don't have matching source or source els set the
+        // sources cache to the `currentSource` cache
+      } else if (!matchingSources.length) {
+        this.cache_.sources = [this.cache_.source];
+      }
+
+      // update the tech `src` cache
+      this.cache_.src = src;
+    }
+
+    /**
+     * *EXPERIMENTAL* Fired when the source is set or changed on the {@link Tech}
+     * causing the media element to reload.
+     *
+     * It will fire for the initial source and each subsequent source.
+     * This event is a custom event from Video.js and is triggered by the {@link Tech}.
+     *
+     * The event object for this event contains a `src` property that will contain the source
+     * that was available when the event was triggered. This is generally only necessary if Video.js
+     * is switching techs while the source was being changed.
+     *
+     * It is also fired when `load` is called on the player (or media element)
+     * because the {@link https://html.spec.whatwg.org/multipage/media.html#dom-media-load|specification for `load`}
+     * says that the resource selection algorithm needs to be aborted and restarted.
+     * In this case, it is very likely that the `src` property will be set to the
+     * empty string `""` to indicate we do not know what the source will be but
+     * that it is changing.
+     *
+     * *This event is currently still experimental and may change in minor releases.*
+     * __To use this, pass `enableSourceset` option to the player.__
+     *
+     * @event Player#sourceset
+     * @type {Event}
+     * @prop {string} src
+     *                The source url available when the `sourceset` was triggered.
+     *                It will be an empty string if we cannot know what the source is
+     *                but know that the source will change.
+     */
+    /**
+     * Retrigger the `sourceset` event that was triggered by the {@link Tech}.
+     *
+     * @fires Player#sourceset
+     * @listens Tech#sourceset
+     * @private
+     */
+    handleTechSourceset_(event) {
+      // only update the source cache when the source
+      // was not updated using the player api
+      if (!this.changingSrc_) {
+        let updateSourceCaches = src => this.updateSourceCaches_(src);
+        const playerSrc = this.currentSource().src;
+        const eventSrc = event.src;
+
+        // if we have a playerSrc that is not a blob, and a tech src that is a blob
+        if (playerSrc && !/^blob:/.test(playerSrc) && /^blob:/.test(eventSrc)) {
+          // if both the tech source and the player source were updated we assume
+          // something like @videojs/http-streaming did the sourceset and skip updating the source cache.
+          if (!this.lastSource_ || this.lastSource_.tech !== eventSrc && this.lastSource_.player !== playerSrc) {
+            updateSourceCaches = () => {};
+          }
+        }
+
+        // update the source to the initial source right away
+        // in some cases this will be empty string
+        updateSourceCaches(eventSrc);
+
+        // if the `sourceset` `src` was an empty string
+        // wait for a `loadstart` to update the cache to `currentSrc`.
+        // If a sourceset happens before a `loadstart`, we reset the state
+        if (!event.src) {
+          this.tech_.any(['sourceset', 'loadstart'], e => {
+            // if a sourceset happens before a `loadstart` there
+            // is nothing to do as this `handleTechSourceset_`
+            // will be called again and this will be handled there.
+            if (e.type === 'sourceset') {
+              return;
+            }
+            const techSrc = this.techGet_('currentSrc');
+            this.lastSource_.tech = techSrc;
+            this.updateSourceCaches_(techSrc);
+          });
+        }
+      }
+      this.lastSource_ = {
+        player: this.currentSource().src,
+        tech: event.src
+      };
+      this.trigger({
+        src: event.src,
+        type: 'sourceset'
+      });
+    }
+
+    /**
+     * Add/remove the vjs-has-started class
+     *
+     *
+     * @param {boolean} request
+     *        - true: adds the class
+     *        - false: remove the class
+     *
+     * @return {boolean}
+     *         the boolean value of hasStarted_
+     */
+    hasStarted(request) {
+      if (request === undefined) {
+        // act as getter, if we have no request to change
+        return this.hasStarted_;
+      }
+      if (request === this.hasStarted_) {
+        return;
+      }
+      this.hasStarted_ = request;
+      if (this.hasStarted_) {
+        this.addClass('vjs-has-started');
+      } else {
+        this.removeClass('vjs-has-started');
+      }
+    }
+
+    /**
+     * Fired whenever the media begins or resumes playback
+     *
+     * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#dom-media-play}
+     * @fires Player#play
+     * @listens Tech#play
+     * @private
+     */
+    handleTechPlay_() {
+      this.removeClass('vjs-ended', 'vjs-paused');
+      this.addClass('vjs-playing');
+
+      // hide the poster when the user hits play
+      this.hasStarted(true);
+      /**
+       * Triggered whenever an {@link Tech#play} event happens. Indicates that
+       * playback has started or resumed.
+       *
+       * @event Player#play
+       * @type {Event}
+       */
+      this.trigger('play');
+    }
+
+    /**
+     * Retrigger the `ratechange` event that was triggered by the {@link Tech}.
+     *
+     * If there were any events queued while the playback rate was zero, fire
+     * those events now.
+     *
+     * @private
+     * @method Player#handleTechRateChange_
+     * @fires Player#ratechange
+     * @listens Tech#ratechange
+     */
+    handleTechRateChange_() {
+      if (this.tech_.playbackRate() > 0 && this.cache_.lastPlaybackRate === 0) {
+        this.queuedCallbacks_.forEach(queued => queued.callback(queued.event));
+        this.queuedCallbacks_ = [];
+      }
+      this.cache_.lastPlaybackRate = this.tech_.playbackRate();
+      /**
+       * Fires when the playing speed of the audio/video is changed
+       *
+       * @event Player#ratechange
+       * @type {event}
+       */
+      this.trigger('ratechange');
+    }
+
+    /**
+     * Retrigger the `waiting` event that was triggered by the {@link Tech}.
+     *
+     * @fires Player#waiting
+     * @listens Tech#waiting
+     * @private
+     */
+    handleTechWaiting_() {
+      this.addClass('vjs-waiting');
+      /**
+       * A readyState change on the DOM element has caused playback to stop.
+       *
+       * @event Player#waiting
+       * @type {Event}
+       */
+      this.trigger('waiting');
+
+      // Browsers may emit a timeupdate event after a waiting event. In order to prevent
+      // premature removal of the waiting class, wait for the time to change.
+      const timeWhenWaiting = this.currentTime();
+      const timeUpdateListener = () => {
+        if (timeWhenWaiting !== this.currentTime()) {
+          this.removeClass('vjs-waiting');
+          this.off('timeupdate', timeUpdateListener);
+        }
+      };
+      this.on('timeupdate', timeUpdateListener);
+    }
+
+    /**
+     * Retrigger the `canplay` event that was triggered by the {@link Tech}.
+     * > Note: This is not consistent between browsers. See #1351
+     *
+     * @fires Player#canplay
+     * @listens Tech#canplay
+     * @private
+     */
+    handleTechCanPlay_() {
+      this.removeClass('vjs-waiting');
+      /**
+       * The media has a readyState of HAVE_FUTURE_DATA or greater.
+       *
+       * @event Player#canplay
+       * @type {Event}
+       */
+      this.trigger('canplay');
+    }
+
+    /**
+     * Retrigger the `canplaythrough` event that was triggered by the {@link Tech}.
+     *
+     * @fires Player#canplaythrough
+     * @listens Tech#canplaythrough
+     * @private
+     */
+    handleTechCanPlayThrough_() {
+      this.removeClass('vjs-waiting');
+      /**
+       * The media has a readyState of HAVE_ENOUGH_DATA or greater. This means that the
+       * entire media file can be played without buffering.
+       *
+       * @event Player#canplaythrough
+       * @type {Event}
+       */
+      this.trigger('canplaythrough');
+    }
+
+    /**
+     * Retrigger the `playing` event that was triggered by the {@link Tech}.
+     *
+     * @fires Player#playing
+     * @listens Tech#playing
+     * @private
+     */
+    handleTechPlaying_() {
+      this.removeClass('vjs-waiting');
+      /**
+       * The media is no longer blocked from playback, and has started playing.
+       *
+       * @event Player#playing
+       * @type {Event}
+       */
+      this.trigger('playing');
+    }
+
+    /**
+     * Retrigger the `seeking` event that was triggered by the {@link Tech}.
+     *
+     * @fires Player#seeking
+     * @listens Tech#seeking
+     * @private
+     */
+    handleTechSeeking_() {
+      this.addClass('vjs-seeking');
+      /**
+       * Fired whenever the player is jumping to a new time
+       *
+       * @event Player#seeking
+       * @type {Event}
+       */
+      this.trigger('seeking');
+    }
+
+    /**
+     * Retrigger the `seeked` event that was triggered by the {@link Tech}.
+     *
+     * @fires Player#seeked
+     * @listens Tech#seeked
+     * @private
+     */
+    handleTechSeeked_() {
+      this.removeClass('vjs-seeking', 'vjs-ended');
+      /**
+       * Fired when the player has finished jumping to a new time
+       *
+       * @event Player#seeked
+       * @type {Event}
+       */
+      this.trigger('seeked');
+    }
+
+    /**
+     * Retrigger the `pause` event that was triggered by the {@link Tech}.
+     *
+     * @fires Player#pause
+     * @listens Tech#pause
+     * @private
+     */
+    handleTechPause_() {
+      this.removeClass('vjs-playing');
+      this.addClass('vjs-paused');
+      /**
+       * Fired whenever the media has been paused
+       *
+       * @event Player#pause
+       * @type {Event}
+       */
+      this.trigger('pause');
+    }
+
+    /**
+     * Retrigger the `ended` event that was triggered by the {@link Tech}.
+     *
+     * @fires Player#ended
+     * @listens Tech#ended
+     * @private
+     */
+    handleTechEnded_() {
+      this.addClass('vjs-ended');
+      this.removeClass('vjs-waiting');
+      if (this.options_.loop) {
+        this.currentTime(0);
+        this.play();
+      } else if (!this.paused()) {
+        this.pause();
+      }
+
+      /**
+       * Fired when the end of the media resource is reached (currentTime == duration)
+       *
+       * @event Player#ended
+       * @type {Event}
+       */
+      this.trigger('ended');
+    }
+
+    /**
+     * Fired when the duration of the media resource is first known or changed
+     *
+     * @listens Tech#durationchange
+     * @private
+     */
+    handleTechDurationChange_() {
+      this.duration(this.techGet_('duration'));
+    }
+
+    /**
+     * Handle a click on the media element to play/pause
+     *
+     * @param {Event} event
+     *        the event that caused this function to trigger
+     *
+     * @listens Tech#click
+     * @private
+     */
+    handleTechClick_(event) {
+      // When controls are disabled a click should not toggle playback because
+      // the click is considered a control
+      if (!this.controls_) {
+        return;
+      }
+      if (this.options_ === undefined || this.options_.userActions === undefined || this.options_.userActions.click === undefined || this.options_.userActions.click !== false) {
+        if (this.options_ !== undefined && this.options_.userActions !== undefined && typeof this.options_.userActions.click === 'function') {
+          this.options_.userActions.click.call(this, event);
+        } else if (this.paused()) {
+          silencePromise(this.play());
+        } else {
+          this.pause();
+        }
+      }
+    }
+
+    /**
+     * Handle a double-click on the media element to enter/exit fullscreen
+     *
+     * @param {Event} event
+     *        the event that caused this function to trigger
+     *
+     * @listens Tech#dblclick
+     * @private
+     */
+    handleTechDoubleClick_(event) {
+      if (!this.controls_) {
+        return;
+      }
+
+      // we do not want to toggle fullscreen state
+      // when double-clicking inside a control bar or a modal
+      const inAllowedEls = Array.prototype.some.call(this.$$('.vjs-control-bar, .vjs-modal-dialog'), el => el.contains(event.target));
+      if (!inAllowedEls) {
+        /*
+         * options.userActions.doubleClick
+         *
+         * If `undefined` or `true`, double-click toggles fullscreen if controls are present
+         * Set to `false` to disable double-click handling
+         * Set to a function to substitute an external double-click handler
+         */
+        if (this.options_ === undefined || this.options_.userActions === undefined || this.options_.userActions.doubleClick === undefined || this.options_.userActions.doubleClick !== false) {
+          if (this.options_ !== undefined && this.options_.userActions !== undefined && typeof this.options_.userActions.doubleClick === 'function') {
+            this.options_.userActions.doubleClick.call(this, event);
+          } else if (this.isFullscreen()) {
+            this.exitFullscreen();
+          } else {
+            this.requestFullscreen();
+          }
+        }
+      }
+    }
+
+    /**
+     * Handle a tap on the media element. It will toggle the user
+     * activity state, which hides and shows the controls.
+     *
+     * @listens Tech#tap
+     * @private
+     */
+    handleTechTap_() {
+      this.userActive(!this.userActive());
+    }
+
+    /**
+     * Handle touch to start
+     *
+     * @listens Tech#touchstart
+     * @private
+     */
+    handleTechTouchStart_() {
+      this.userWasActive = this.userActive();
+    }
+
+    /**
+     * Handle touch to move
+     *
+     * @listens Tech#touchmove
+     * @private
+     */
+    handleTechTouchMove_() {
+      if (this.userWasActive) {
+        this.reportUserActivity();
+      }
+    }
+
+    /**
+     * Handle touch to end
+     *
+     * @param {Event} event
+     *        the touchend event that triggered
+     *        this function
+     *
+     * @listens Tech#touchend
+     * @private
+     */
+    handleTechTouchEnd_(event) {
+      // Stop the mouse events from also happening
+      if (event.cancelable) {
+        event.preventDefault();
+      }
+    }
+
+    /**
+     * @private
+     */
+    toggleFullscreenClass_() {
+      if (this.isFullscreen()) {
+        this.addClass('vjs-fullscreen');
+      } else {
+        this.removeClass('vjs-fullscreen');
+      }
+    }
+
+    /**
+     * when the document fschange event triggers it calls this
+     */
+    documentFullscreenChange_(e) {
+      const targetPlayer = e.target.player;
+
+      // if another player was fullscreen
+      // do a null check for targetPlayer because older firefox's would put document as e.target
+      if (targetPlayer && targetPlayer !== this) {
+        return;
+      }
+      const el = this.el();
+      let isFs = document[this.fsApi_.fullscreenElement] === el;
+      if (!isFs && el.matches) {
+        isFs = el.matches(':' + this.fsApi_.fullscreen);
+      }
+      this.isFullscreen(isFs);
+    }
+
+    /**
+     * Handle Tech Fullscreen Change
+     *
+     * @param {Event} event
+     *        the fullscreenchange event that triggered this function
+     *
+     * @param {Object} data
+     *        the data that was sent with the event
+     *
+     * @private
+     * @listens Tech#fullscreenchange
+     * @fires Player#fullscreenchange
+     */
+    handleTechFullscreenChange_(event, data) {
+      if (data) {
+        if (data.nativeIOSFullscreen) {
+          this.addClass('vjs-ios-native-fs');
+          this.tech_.one('webkitendfullscreen', () => {
+            this.removeClass('vjs-ios-native-fs');
+          });
+        }
+        this.isFullscreen(data.isFullscreen);
+      }
+    }
+    handleTechFullscreenError_(event, err) {
+      this.trigger('fullscreenerror', err);
+    }
+
+    /**
+     * @private
+     */
+    togglePictureInPictureClass_() {
+      if (this.isInPictureInPicture()) {
+        this.addClass('vjs-picture-in-picture');
+      } else {
+        this.removeClass('vjs-picture-in-picture');
+      }
+    }
+
+    /**
+     * Handle Tech Enter Picture-in-Picture.
+     *
+     * @param {Event} event
+     *        the enterpictureinpicture event that triggered this function
+     *
+     * @private
+     * @listens Tech#enterpictureinpicture
+     */
+    handleTechEnterPictureInPicture_(event) {
+      this.isInPictureInPicture(true);
+    }
+
+    /**
+     * Handle Tech Leave Picture-in-Picture.
+     *
+     * @param {Event} event
+     *        the leavepictureinpicture event that triggered this function
+     *
+     * @private
+     * @listens Tech#leavepictureinpicture
+     */
+    handleTechLeavePictureInPicture_(event) {
+      this.isInPictureInPicture(false);
+    }
+
+    /**
+     * Fires when an error occurred during the loading of an audio/video.
+     *
+     * @private
+     * @listens Tech#error
+     */
+    handleTechError_() {
+      const error = this.tech_.error();
+      if (error) {
+        this.error(error);
+      }
+    }
+
+    /**
+     * Retrigger the `textdata` event that was triggered by the {@link Tech}.
+     *
+     * @fires Player#textdata
+     * @listens Tech#textdata
+     * @private
+     */
+    handleTechTextData_() {
+      let data = null;
+      if (arguments.length > 1) {
+        data = arguments[1];
+      }
+
+      /**
+       * Fires when we get a textdata event from tech
+       *
+       * @event Player#textdata
+       * @type {Event}
+       */
+      this.trigger('textdata', data);
+    }
+
+    /**
+     * Get object for cached values.
+     *
+     * @return {Object}
+     *         get the current object cache
+     */
+    getCache() {
+      return this.cache_;
+    }
+
+    /**
+     * Resets the internal cache object.
+     *
+     * Using this function outside the player constructor or reset method may
+     * have unintended side-effects.
+     *
+     * @private
+     */
+    resetCache_() {
+      this.cache_ = {
+        // Right now, the currentTime is not _really_ cached because it is always
+        // retrieved from the tech (see: currentTime). However, for completeness,
+        // we set it to zero here to ensure that if we do start actually caching
+        // it, we reset it along with everything else.
+        currentTime: 0,
+        initTime: 0,
+        inactivityTimeout: this.options_.inactivityTimeout,
+        duration: NaN,
+        lastVolume: 1,
+        lastPlaybackRate: this.defaultPlaybackRate(),
+        media: null,
+        src: '',
+        source: {},
+        sources: [],
+        playbackRates: [],
+        volume: 1
+      };
+    }
+
+    /**
+     * Pass values to the playback tech
+     *
+     * @param {string} [method]
+     *        the method to call
+     *
+     * @param {Object} [arg]
+     *        the argument to pass
+     *
+     * @private
+     */
+    techCall_(method, arg) {
+      // If it's not ready yet, call method when it is
+
+      this.ready(function () {
+        if (method in allowedSetters) {
+          return set(this.middleware_, this.tech_, method, arg);
+        } else if (method in allowedMediators) {
+          return mediate(this.middleware_, this.tech_, method, arg);
+        }
+        try {
+          if (this.tech_) {
+            this.tech_[method](arg);
+          }
+        } catch (e) {
+          log$1(e);
+          throw e;
+        }
+      }, true);
+    }
+
+    /**
+     * Mediate attempt to call playback tech method
+     * and return the value of the method called.
+     *
+     * @param {string} method
+     *        Tech method
+     *
+     * @return {*}
+     *         Value returned by the tech method called, undefined if tech
+     *         is not ready or tech method is not present
+     *
+     * @private
+     */
+    techGet_(method) {
+      if (!this.tech_ || !this.tech_.isReady_) {
+        return;
+      }
+      if (method in allowedGetters) {
+        return get(this.middleware_, this.tech_, method);
+      } else if (method in allowedMediators) {
+        return mediate(this.middleware_, this.tech_, method);
+      }
+
+      // Log error when playback tech object is present but method
+      // is undefined or unavailable
+      try {
+        return this.tech_[method]();
+      } catch (e) {
+        // When building additional tech libs, an expected method may not be defined yet
+        if (this.tech_[method] === undefined) {
+          log$1(`Video.js: ${method} method not defined for ${this.techName_} playback technology.`, e);
+          throw e;
+        }
+
+        // When a method isn't available on the object it throws a TypeError
+        if (e.name === 'TypeError') {
+          log$1(`Video.js: ${method} unavailable on ${this.techName_} playback technology element.`, e);
+          this.tech_.isReady_ = false;
+          throw e;
+        }
+
+        // If error unknown, just log and throw
+        log$1(e);
+        throw e;
+      }
+    }
+
+    /**
+     * Attempt to begin playback at the first opportunity.
+     *
+     * @return {Promise|undefined}
+     *         Returns a promise if the browser supports Promises (or one
+     *         was passed in as an option). This promise will be resolved on
+     *         the return value of play. If this is undefined it will fulfill the
+     *         promise chain otherwise the promise chain will be fulfilled when
+     *         the promise from play is fulfilled.
+     */
+    play() {
+      return new Promise(resolve => {
+        this.play_(resolve);
+      });
+    }
+
+    /**
+     * The actual logic for play, takes a callback that will be resolved on the
+     * return value of play. This allows us to resolve to the play promise if there
+     * is one on modern browsers.
+     *
+     * @private
+     * @param {Function} [callback]
+     *        The callback that should be called when the techs play is actually called
+     */
+    play_(callback = silencePromise) {
+      this.playCallbacks_.push(callback);
+      const isSrcReady = Boolean(!this.changingSrc_ && (this.src() || this.currentSrc()));
+      const isSafariOrIOS = Boolean(IS_ANY_SAFARI || IS_IOS);
+
+      // treat calls to play_ somewhat like the `one` event function
+      if (this.waitToPlay_) {
+        this.off(['ready', 'loadstart'], this.waitToPlay_);
+        this.waitToPlay_ = null;
+      }
+
+      // if the player/tech is not ready or the src itself is not ready
+      // queue up a call to play on `ready` or `loadstart`
+      if (!this.isReady_ || !isSrcReady) {
+        this.waitToPlay_ = e => {
+          this.play_();
+        };
+        this.one(['ready', 'loadstart'], this.waitToPlay_);
+
+        // if we are in Safari, there is a high chance that loadstart will trigger after the gesture timeperiod
+        // in that case, we need to prime the video element by calling load so it'll be ready in time
+        if (!isSrcReady && isSafariOrIOS) {
+          this.load();
+        }
+        return;
+      }
+
+      // If the player/tech is ready and we have a source, we can attempt playback.
+      const val = this.techGet_('play');
+
+      // For native playback, reset the progress bar if we get a play call from a replay.
+      const isNativeReplay = isSafariOrIOS && this.hasClass('vjs-ended');
+      if (isNativeReplay) {
+        this.resetProgressBar_();
+      }
+      // play was terminated if the returned value is null
+      if (val === null) {
+        this.runPlayTerminatedQueue_();
+      } else {
+        this.runPlayCallbacks_(val);
+      }
+    }
+
+    /**
+     * These functions will be run when if play is terminated. If play
+     * runPlayCallbacks_ is run these function will not be run. This allows us
+     * to differentiate between a terminated play and an actual call to play.
+     */
+    runPlayTerminatedQueue_() {
+      const queue = this.playTerminatedQueue_.slice(0);
+      this.playTerminatedQueue_ = [];
+      queue.forEach(function (q) {
+        q();
+      });
+    }
+
+    /**
+     * When a callback to play is delayed we have to run these
+     * callbacks when play is actually called on the tech. This function
+     * runs the callbacks that were delayed and accepts the return value
+     * from the tech.
+     *
+     * @param {undefined|Promise} val
+     *        The return value from the tech.
+     */
+    runPlayCallbacks_(val) {
+      const callbacks = this.playCallbacks_.slice(0);
+      this.playCallbacks_ = [];
+      // clear play terminatedQueue since we finished a real play
+      this.playTerminatedQueue_ = [];
+      callbacks.forEach(function (cb) {
+        cb(val);
+      });
+    }
+
+    /**
+     * Pause the video playback
+     */
+    pause() {
+      this.techCall_('pause');
+    }
+
+    /**
+     * Check if the player is paused or has yet to play
+     *
+     * @return {boolean}
+     *         - false: if the media is currently playing
+     *         - true: if media is not currently playing
+     */
+    paused() {
+      // The initial state of paused should be true (in Safari it's actually false)
+      return this.techGet_('paused') === false ? false : true;
+    }
+
+    /**
+     * Get a TimeRange object representing the current ranges of time that the user
+     * has played.
+     *
+     * @return { import('./utils/time').TimeRange }
+     *         A time range object that represents all the increments of time that have
+     *         been played.
+     */
+    played() {
+      return this.techGet_('played') || createTimeRanges$1(0, 0);
+    }
+
+    /**
+     * Sets or returns whether or not the user is "scrubbing". Scrubbing is
+     * when the user has clicked the progress bar handle and is
+     * dragging it along the progress bar.
+     *
+     * @param {boolean} [isScrubbing]
+     *        whether the user is or is not scrubbing
+     *
+     * @return {boolean|undefined}
+     *         - The value of scrubbing when getting
+     *         - Nothing when setting
+     */
+    scrubbing(isScrubbing) {
+      if (typeof isScrubbing === 'undefined') {
+        return this.scrubbing_;
+      }
+      this.scrubbing_ = !!isScrubbing;
+      this.techCall_('setScrubbing', this.scrubbing_);
+      if (isScrubbing) {
+        this.addClass('vjs-scrubbing');
+      } else {
+        this.removeClass('vjs-scrubbing');
+      }
+    }
+
+    /**
+     * Get or set the current time (in seconds)
+     *
+     * @param {number|string} [seconds]
+     *        The time to seek to in seconds
+     *
+     * @return {number|undefined}
+     *         - the current time in seconds when getting
+     *         - Nothing when setting
+     */
+    currentTime(seconds) {
+      if (seconds === undefined) {
+        // cache last currentTime and return. default to 0 seconds
+        //
+        // Caching the currentTime is meant to prevent a massive amount of reads on the tech's
+        // currentTime when scrubbing, but may not provide much performance benefit after all.
+        // Should be tested. Also something has to read the actual current time or the cache will
+        // never get updated.
+        this.cache_.currentTime = this.techGet_('currentTime') || 0;
+        return this.cache_.currentTime;
+      }
+      if (seconds < 0) {
+        seconds = 0;
+      }
+      if (!this.isReady_ || this.changingSrc_ || !this.tech_ || !this.tech_.isReady_) {
+        this.cache_.initTime = seconds;
+        this.off('canplay', this.boundApplyInitTime_);
+        this.one('canplay', this.boundApplyInitTime_);
+        return;
+      }
+      this.techCall_('setCurrentTime', seconds);
+      this.cache_.initTime = 0;
+      if (isFinite(seconds)) {
+        this.cache_.currentTime = Number(seconds);
+      }
+    }
+
+    /**
+     * Apply the value of initTime stored in cache as currentTime.
+     *
+     * @private
+     */
+    applyInitTime_() {
+      this.currentTime(this.cache_.initTime);
+    }
+
+    /**
+     * Normally gets the length in time of the video in seconds;
+     * in all but the rarest use cases an argument will NOT be passed to the method
+     *
+     * > **NOTE**: The video must have started loading before the duration can be
+     * known, and depending on preload behaviour may not be known until the video starts
+     * playing.
+     *
+     * @fires Player#durationchange
+     *
+     * @param {number} [seconds]
+     *        The duration of the video to set in seconds
+     *
+     * @return {number|undefined}
+     *         - The duration of the video in seconds when getting
+     *         - Nothing when setting
+     */
+    duration(seconds) {
+      if (seconds === undefined) {
+        // return NaN if the duration is not known
+        return this.cache_.duration !== undefined ? this.cache_.duration : NaN;
+      }
+      seconds = parseFloat(seconds);
+
+      // Standardize on Infinity for signaling video is live
+      if (seconds < 0) {
+        seconds = Infinity;
+      }
+      if (seconds !== this.cache_.duration) {
+        // Cache the last set value for optimized scrubbing
+        this.cache_.duration = seconds;
+        if (seconds === Infinity) {
+          this.addClass('vjs-live');
+        } else {
+          this.removeClass('vjs-live');
+        }
+        if (!isNaN(seconds)) {
+          // Do not fire durationchange unless the duration value is known.
+          // @see [Spec]{@link https://www.w3.org/TR/2011/WD-html5-20110113/video.html#media-element-load-algorithm}
+
+          /**
+           * @event Player#durationchange
+           * @type {Event}
+           */
+          this.trigger('durationchange');
+        }
+      }
+    }
+
+    /**
+     * Calculates how much time is left in the video. Not part
+     * of the native video API.
+     *
+     * @return {number}
+     *         The time remaining in seconds
+     */
+    remainingTime() {
+      return this.duration() - this.currentTime();
+    }
+
+    /**
+     * A remaining time function that is intended to be used when
+     * the time is to be displayed directly to the user.
+     *
+     * @return {number}
+     *         The rounded time remaining in seconds
+     */
+    remainingTimeDisplay() {
+      return Math.floor(this.duration()) - Math.floor(this.currentTime());
+    }
+
+    //
+    // Kind of like an array of portions of the video that have been downloaded.
+
+    /**
+     * Get a TimeRange object with an array of the times of the video
+     * that have been downloaded. If you just want the percent of the
+     * video that's been downloaded, use bufferedPercent.
+     *
+     * @see [Buffered Spec]{@link http://dev.w3.org/html5/spec/video.html#dom-media-buffered}
+     *
+     * @return { import('./utils/time').TimeRange }
+     *         A mock {@link TimeRanges} object (following HTML spec)
+     */
+    buffered() {
+      let buffered = this.techGet_('buffered');
+      if (!buffered || !buffered.length) {
+        buffered = createTimeRanges$1(0, 0);
+      }
+      return buffered;
+    }
+
+    /**
+     * Get the TimeRanges of the media that are currently available
+     * for seeking to.
+     *
+     * @see [Seekable Spec]{@link https://html.spec.whatwg.org/multipage/media.html#dom-media-seekable}
+     *
+     * @return { import('./utils/time').TimeRange }
+     *         A mock {@link TimeRanges} object (following HTML spec)
+     */
+    seekable() {
+      let seekable = this.techGet_('seekable');
+      if (!seekable || !seekable.length) {
+        seekable = createTimeRanges$1(0, 0);
+      }
+      return seekable;
+    }
+
+    /**
+     * Returns whether the player is in the "seeking" state.
+     *
+     * @return {boolean} True if the player is in the seeking state, false if not.
+     */
+    seeking() {
+      return this.techGet_('seeking');
+    }
+
+    /**
+     * Returns whether the player is in the "ended" state.
+     *
+     * @return {boolean} True if the player is in the ended state, false if not.
+     */
+    ended() {
+      return this.techGet_('ended');
+    }
+
+    /**
+     * Returns the current state of network activity for the element, from
+     * the codes in the list below.
+     * - NETWORK_EMPTY (numeric value 0)
+     *   The element has not yet been initialised. All attributes are in
+     *   their initial states.
+     * - NETWORK_IDLE (numeric value 1)
+     *   The element's resource selection algorithm is active and has
+     *   selected a resource, but it is not actually using the network at
+     *   this time.
+     * - NETWORK_LOADING (numeric value 2)
+     *   The user agent is actively trying to download data.
+     * - NETWORK_NO_SOURCE (numeric value 3)
+     *   The element's resource selection algorithm is active, but it has
+     *   not yet found a resource to use.
+     *
+     * @see https://html.spec.whatwg.org/multipage/embedded-content.html#network-states
+     * @return {number} the current network activity state
+     */
+    networkState() {
+      return this.techGet_('networkState');
+    }
+
+    /**
+     * Returns a value that expresses the current state of the element
+     * with respect to rendering the current playback position, from the
+     * codes in the list below.
+     * - HAVE_NOTHING (numeric value 0)
+     *   No information regarding the media resource is available.
+     * - HAVE_METADATA (numeric value 1)
+     *   Enough of the resource has been obtained that the duration of the
+     *   resource is available.
+     * - HAVE_CURRENT_DATA (numeric value 2)
+     *   Data for the immediate current playback position is available.
+     * - HAVE_FUTURE_DATA (numeric value 3)
+     *   Data for the immediate current playback position is available, as
+     *   well as enough data for the user agent to advance the current
+     *   playback position in the direction of playback.
+     * - HAVE_ENOUGH_DATA (numeric value 4)
+     *   The user agent estimates that enough data is available for
+     *   playback to proceed uninterrupted.
+     *
+     * @see https://html.spec.whatwg.org/multipage/embedded-content.html#dom-media-readystate
+     * @return {number} the current playback rendering state
+     */
+    readyState() {
+      return this.techGet_('readyState');
+    }
+
+    /**
+     * Get the percent (as a decimal) of the video that's been downloaded.
+     * This method is not a part of the native HTML video API.
+     *
+     * @return {number}
+     *         A decimal between 0 and 1 representing the percent
+     *         that is buffered 0 being 0% and 1 being 100%
+     */
+    bufferedPercent() {
+      return bufferedPercent(this.buffered(), this.duration());
+    }
+
+    /**
+     * Get the ending time of the last buffered time range
+     * This is used in the progress bar to encapsulate all time ranges.
+     *
+     * @return {number}
+     *         The end of the last buffered time range
+     */
+    bufferedEnd() {
+      const buffered = this.buffered();
+      const duration = this.duration();
+      let end = buffered.end(buffered.length - 1);
+      if (end > duration) {
+        end = duration;
+      }
+      return end;
+    }
+
+    /**
+     * Get or set the current volume of the media
+     *
+     * @param  {number} [percentAsDecimal]
+     *         The new volume as a decimal percent:
+     *         - 0 is muted/0%/off
+     *         - 1.0 is 100%/full
+     *         - 0.5 is half volume or 50%
+     *
+     * @return {number|undefined}
+     *         The current volume as a percent when getting
+     */
+    volume(percentAsDecimal) {
+      let vol;
+      if (percentAsDecimal !== undefined) {
+        // Force value to between 0 and 1
+        vol = Math.max(0, Math.min(1, percentAsDecimal));
+        this.cache_.volume = vol;
+        this.techCall_('setVolume', vol);
+        if (vol > 0) {
+          this.lastVolume_(vol);
+        }
+        return;
+      }
+
+      // Default to 1 when returning current volume.
+      vol = parseFloat(this.techGet_('volume'));
+      return isNaN(vol) ? 1 : vol;
+    }
+
+    /**
+     * Get the current muted state, or turn mute on or off
+     *
+     * @param {boolean} [muted]
+     *        - true to mute
+     *        - false to unmute
+     *
+     * @return {boolean|undefined}
+     *         - true if mute is on and getting
+     *         - false if mute is off and getting
+     *         - nothing if setting
+     */
+    muted(muted) {
+      if (muted !== undefined) {
+        this.techCall_('setMuted', muted);
+        return;
+      }
+      return this.techGet_('muted') || false;
+    }
+
+    /**
+     * Get the current defaultMuted state, or turn defaultMuted on or off. defaultMuted
+     * indicates the state of muted on initial playback.
+     *
+     * ```js
+     *   var myPlayer = videojs('some-player-id');
+     *
+     *   myPlayer.src("http://www.example.com/path/to/video.mp4");
+     *
+     *   // get, should be false
+     *   console.log(myPlayer.defaultMuted());
+     *   // set to true
+     *   myPlayer.defaultMuted(true);
+     *   // get should be true
+     *   console.log(myPlayer.defaultMuted());
+     * ```
+     *
+     * @param {boolean} [defaultMuted]
+     *        - true to mute
+     *        - false to unmute
+     *
+     * @return {boolean|undefined}
+     *         - true if defaultMuted is on and getting
+     *         - false if defaultMuted is off and getting
+     *         - Nothing when setting
+     */
+    defaultMuted(defaultMuted) {
+      if (defaultMuted !== undefined) {
+        this.techCall_('setDefaultMuted', defaultMuted);
+      }
+      return this.techGet_('defaultMuted') || false;
+    }
+
+    /**
+     * Get the last volume, or set it
+     *
+     * @param  {number} [percentAsDecimal]
+     *         The new last volume as a decimal percent:
+     *         - 0 is muted/0%/off
+     *         - 1.0 is 100%/full
+     *         - 0.5 is half volume or 50%
+     *
+     * @return {number|undefined}
+     *         - The current value of lastVolume as a percent when getting
+     *         - Nothing when setting
+     *
+     * @private
+     */
+    lastVolume_(percentAsDecimal) {
+      if (percentAsDecimal !== undefined && percentAsDecimal !== 0) {
+        this.cache_.lastVolume = percentAsDecimal;
+        return;
+      }
+      return this.cache_.lastVolume;
+    }
+
+    /**
+     * Check if current tech can support native fullscreen
+     * (e.g. with built in controls like iOS)
+     *
+     * @return {boolean}
+     *         if native fullscreen is supported
+     */
+    supportsFullScreen() {
+      return this.techGet_('supportsFullScreen') || false;
+    }
+
+    /**
+     * Check if the player is in fullscreen mode or tell the player that it
+     * is or is not in fullscreen mode.
+     *
+     * > NOTE: As of the latest HTML5 spec, isFullscreen is no longer an official
+     * property and instead document.fullscreenElement is used. But isFullscreen is
+     * still a valuable property for internal player workings.
+     *
+     * @param  {boolean} [isFS]
+     *         Set the players current fullscreen state
+     *
+     * @return {boolean|undefined}
+     *         - true if fullscreen is on and getting
+     *         - false if fullscreen is off and getting
+     *         - Nothing when setting
+     */
+    isFullscreen(isFS) {
+      if (isFS !== undefined) {
+        const oldValue = this.isFullscreen_;
+        this.isFullscreen_ = Boolean(isFS);
+
+        // if we changed fullscreen state and we're in prefixed mode, trigger fullscreenchange
+        // this is the only place where we trigger fullscreenchange events for older browsers
+        // fullWindow mode is treated as a prefixed event and will get a fullscreenchange event as well
+        if (this.isFullscreen_ !== oldValue && this.fsApi_.prefixed) {
+          /**
+             * @event Player#fullscreenchange
+             * @type {Event}
+             */
+          this.trigger('fullscreenchange');
+        }
+        this.toggleFullscreenClass_();
+        return;
+      }
+      return this.isFullscreen_;
+    }
+
+    /**
+     * Increase the size of the video to full screen
+     * In some browsers, full screen is not supported natively, so it enters
+     * "full window mode", where the video fills the browser window.
+     * In browsers and devices that support native full screen, sometimes the
+     * browser's default controls will be shown, and not the Video.js custom skin.
+     * This includes most mobile devices (iOS, Android) and older versions of
+     * Safari.
+     *
+     * @param  {Object} [fullscreenOptions]
+     *         Override the player fullscreen options
+     *
+     * @fires Player#fullscreenchange
+     */
+    requestFullscreen(fullscreenOptions) {
+      if (this.isInPictureInPicture()) {
+        this.exitPictureInPicture();
+      }
+      const self = this;
+      return new Promise((resolve, reject) => {
+        function offHandler() {
+          self.off('fullscreenerror', errorHandler);
+          self.off('fullscreenchange', changeHandler);
+        }
+        function changeHandler() {
+          offHandler();
+          resolve();
+        }
+        function errorHandler(e, err) {
+          offHandler();
+          reject(err);
+        }
+        self.one('fullscreenchange', changeHandler);
+        self.one('fullscreenerror', errorHandler);
+        const promise = self.requestFullscreenHelper_(fullscreenOptions);
+        if (promise) {
+          promise.then(offHandler, offHandler);
+          promise.then(resolve, reject);
+        }
+      });
+    }
+    requestFullscreenHelper_(fullscreenOptions) {
+      let fsOptions;
+
+      // Only pass fullscreen options to requestFullscreen in spec-compliant browsers.
+      // Use defaults or player configured option unless passed directly to this method.
+      if (!this.fsApi_.prefixed) {
+        fsOptions = this.options_.fullscreen && this.options_.fullscreen.options || {};
+        if (fullscreenOptions !== undefined) {
+          fsOptions = fullscreenOptions;
+        }
+      }
+
+      // This method works as follows:
+      // 1. if a fullscreen api is available, use it
+      //   1. call requestFullscreen with potential options
+      //   2. if we got a promise from above, use it to update isFullscreen()
+      // 2. otherwise, if the tech supports fullscreen, call `enterFullScreen` on it.
+      //   This is particularly used for iPhone, older iPads, and non-safari browser on iOS.
+      // 3. otherwise, use "fullWindow" mode
+      if (this.fsApi_.requestFullscreen) {
+        const promise = this.el_[this.fsApi_.requestFullscreen](fsOptions);
+
+        // Even on browsers with promise support this may not return a promise
+        if (promise) {
+          promise.then(() => this.isFullscreen(true), () => this.isFullscreen(false));
+        }
+        return promise;
+      } else if (this.tech_.supportsFullScreen() && !this.options_.preferFullWindow === true) {
+        // we can't take the video.js controls fullscreen but we can go fullscreen
+        // with native controls
+        this.techCall_('enterFullScreen');
+      } else {
+        // fullscreen isn't supported so we'll just stretch the video element to
+        // fill the viewport
+        this.enterFullWindow();
+      }
+    }
+
+    /**
+     * Return the video to its normal size after having been in full screen mode
+     *
+     * @fires Player#fullscreenchange
+     */
+    exitFullscreen() {
+      const self = this;
+      return new Promise((resolve, reject) => {
+        function offHandler() {
+          self.off('fullscreenerror', errorHandler);
+          self.off('fullscreenchange', changeHandler);
+        }
+        function changeHandler() {
+          offHandler();
+          resolve();
+        }
+        function errorHandler(e, err) {
+          offHandler();
+          reject(err);
+        }
+        self.one('fullscreenchange', changeHandler);
+        self.one('fullscreenerror', errorHandler);
+        const promise = self.exitFullscreenHelper_();
+        if (promise) {
+          promise.then(offHandler, offHandler);
+          // map the promise to our resolve/reject methods
+          promise.then(resolve, reject);
+        }
+      });
+    }
+    exitFullscreenHelper_() {
+      if (this.fsApi_.requestFullscreen) {
+        const promise = document[this.fsApi_.exitFullscreen]();
+
+        // Even on browsers with promise support this may not return a promise
+        if (promise) {
+          // we're splitting the promise here, so, we want to catch the
+          // potential error so that this chain doesn't have unhandled errors
+          silencePromise(promise.then(() => this.isFullscreen(false)));
+        }
+        return promise;
+      } else if (this.tech_.supportsFullScreen() && !this.options_.preferFullWindow === true) {
+        this.techCall_('exitFullScreen');
+      } else {
+        this.exitFullWindow();
+      }
+    }
+
+    /**
+     * When fullscreen isn't supported we can stretch the
+     * video container to as wide as the browser will let us.
+     *
+     * @fires Player#enterFullWindow
+     */
+    enterFullWindow() {
+      this.isFullscreen(true);
+      this.isFullWindow = true;
+
+      // Storing original doc overflow value to return to when fullscreen is off
+      this.docOrigOverflow = document.documentElement.style.overflow;
+
+      // Add listener for esc key to exit fullscreen
+      on(document, 'keydown', this.boundFullWindowOnEscKey_);
+
+      // Hide any scroll bars
+      document.documentElement.style.overflow = 'hidden';
+
+      // Apply fullscreen styles
+      addClass(document.body, 'vjs-full-window');
+
+      /**
+       * @event Player#enterFullWindow
+       * @type {Event}
+       */
+      this.trigger('enterFullWindow');
+    }
+
+    /**
+     * Check for call to either exit full window or
+     * full screen on ESC key
+     *
+     * @param {string} event
+     *        Event to check for key press
+     */
+    fullWindowOnEscKey(event) {
+      if (keycode.isEventKey(event, 'Esc')) {
+        if (this.isFullscreen() === true) {
+          if (!this.isFullWindow) {
+            this.exitFullscreen();
+          } else {
+            this.exitFullWindow();
+          }
+        }
+      }
+    }
+
+    /**
+     * Exit full window
+     *
+     * @fires Player#exitFullWindow
+     */
+    exitFullWindow() {
+      this.isFullscreen(false);
+      this.isFullWindow = false;
+      off(document, 'keydown', this.boundFullWindowOnEscKey_);
+
+      // Unhide scroll bars.
+      document.documentElement.style.overflow = this.docOrigOverflow;
+
+      // Remove fullscreen styles
+      removeClass(document.body, 'vjs-full-window');
+
+      // Resize the box, controller, and poster to original sizes
+      // this.positionAll();
+      /**
+       * @event Player#exitFullWindow
+       * @type {Event}
+       */
+      this.trigger('exitFullWindow');
+    }
+
+    /**
+     * Get or set disable Picture-in-Picture mode.
+     *
+     * @param {boolean} [value]
+     *                  - true will disable Picture-in-Picture mode
+     *                  - false will enable Picture-in-Picture mode
+     */
+    disablePictureInPicture(value) {
+      if (value === undefined) {
+        return this.techGet_('disablePictureInPicture');
+      }
+      this.techCall_('setDisablePictureInPicture', value);
+      this.options_.disablePictureInPicture = value;
+      this.trigger('disablepictureinpicturechanged');
+    }
+
+    /**
+     * Check if the player is in Picture-in-Picture mode or tell the player that it
+     * is or is not in Picture-in-Picture mode.
+     *
+     * @param  {boolean} [isPiP]
+     *         Set the players current Picture-in-Picture state
+     *
+     * @return {boolean|undefined}
+     *         - true if Picture-in-Picture is on and getting
+     *         - false if Picture-in-Picture is off and getting
+     *         - nothing if setting
+     */
+    isInPictureInPicture(isPiP) {
+      if (isPiP !== undefined) {
+        this.isInPictureInPicture_ = !!isPiP;
+        this.togglePictureInPictureClass_();
+        return;
+      }
+      return !!this.isInPictureInPicture_;
+    }
+
+    /**
+     * Create a floating video window always on top of other windows so that users may
+     * continue consuming media while they interact with other content sites, or
+     * applications on their device.
+     *
+     * This can use document picture-in-picture or element picture in picture
+     *
+     * Set `enableDocumentPictureInPicture` to `true` to use docPiP on a supported browser
+     * Else set `disablePictureInPicture` to `false` to disable elPiP on a supported browser
+     *
+     *
+     * @see [Spec]{@link https://w3c.github.io/picture-in-picture/}
+     * @see [Spec]{@link https://wicg.github.io/document-picture-in-picture/}
+     *
+     * @fires Player#enterpictureinpicture
+     *
+     * @return {Promise}
+     *         A promise with a Picture-in-Picture window.
+     */
+    requestPictureInPicture() {
+      if (this.options_.enableDocumentPictureInPicture && window.documentPictureInPicture) {
+        const pipContainer = document.createElement(this.el().tagName);
+        pipContainer.classList = this.el().classList;
+        pipContainer.classList.add('vjs-pip-container');
+        if (this.posterImage) {
+          pipContainer.appendChild(this.posterImage.el().cloneNode(true));
+        }
+        if (this.titleBar) {
+          pipContainer.appendChild(this.titleBar.el().cloneNode(true));
+        }
+        pipContainer.appendChild(createEl('p', {
+          className: 'vjs-pip-text'
+        }, {}, this.localize('Playing in picture-in-picture')));
+        return window.documentPictureInPicture.requestWindow({
+          // The aspect ratio won't be correct, Chrome bug https://crbug.com/1407629
+          width: this.videoWidth(),
+          height: this.videoHeight()
+        }).then(pipWindow => {
+          copyStyleSheetsToWindow(pipWindow);
+          this.el_.parentNode.insertBefore(pipContainer, this.el_);
+          pipWindow.document.body.appendChild(this.el_);
+          pipWindow.document.body.classList.add('vjs-pip-window');
+          this.player_.isInPictureInPicture(true);
+          this.player_.trigger({
+            type: 'enterpictureinpicture',
+            pipWindow
+          });
+
+          // Listen for the PiP closing event to move the video back.
+          pipWindow.addEventListener('pagehide', event => {
+            const pipVideo = event.target.querySelector('.video-js');
+            pipContainer.parentNode.replaceChild(pipVideo, pipContainer);
+            this.player_.isInPictureInPicture(false);
+            this.player_.trigger('leavepictureinpicture');
+          });
+          return pipWindow;
+        });
+      }
+      if ('pictureInPictureEnabled' in document && this.disablePictureInPicture() === false) {
+        /**
+         * This event fires when the player enters picture in picture mode
+         *
+         * @event Player#enterpictureinpicture
+         * @type {Event}
+         */
+        return this.techGet_('requestPictureInPicture');
+      }
+      return Promise.reject('No PiP mode is available');
+    }
+
+    /**
+     * Exit Picture-in-Picture mode.
+     *
+     * @see [Spec]{@link https://wicg.github.io/picture-in-picture}
+     *
+     * @fires Player#leavepictureinpicture
+     *
+     * @return {Promise}
+     *         A promise.
+     */
+    exitPictureInPicture() {
+      if (window.documentPictureInPicture && window.documentPictureInPicture.window) {
+        // With documentPictureInPicture, Player#leavepictureinpicture is fired in the pagehide handler
+        window.documentPictureInPicture.window.close();
+        return Promise.resolve();
+      }
+      if ('pictureInPictureEnabled' in document) {
+        /**
+         * This event fires when the player leaves picture in picture mode
+         *
+         * @event Player#leavepictureinpicture
+         * @type {Event}
+         */
+        return document.exitPictureInPicture();
+      }
+    }
+
+    /**
+     * Called when this Player has focus and a key gets pressed down, or when
+     * any Component of this player receives a key press that it doesn't handle.
+     * This allows player-wide hotkeys (either as defined below, or optionally
+     * by an external function).
+     *
+     * @param {KeyboardEvent} event
+     *        The `keydown` event that caused this function to be called.
+     *
+     * @listens keydown
+     */
+    handleKeyDown(event) {
+      const {
+        userActions
+      } = this.options_;
+
+      // Bail out if hotkeys are not configured.
+      if (!userActions || !userActions.hotkeys) {
+        return;
+      }
+
+      // Function that determines whether or not to exclude an element from
+      // hotkeys handling.
+      const excludeElement = el => {
+        const tagName = el.tagName.toLowerCase();
+
+        // The first and easiest test is for `contenteditable` elements.
+        if (el.isContentEditable) {
+          return true;
+        }
+
+        // Inputs matching these types will still trigger hotkey handling as
+        // they are not text inputs.
+        const allowedInputTypes = ['button', 'checkbox', 'hidden', 'radio', 'reset', 'submit'];
+        if (tagName === 'input') {
+          return allowedInputTypes.indexOf(el.type) === -1;
+        }
+
+        // The final test is by tag name. These tags will be excluded entirely.
+        const excludedTags = ['textarea'];
+        return excludedTags.indexOf(tagName) !== -1;
+      };
+
+      // Bail out if the user is focused on an interactive form element.
+      if (excludeElement(this.el_.ownerDocument.activeElement)) {
+        return;
+      }
+      if (typeof userActions.hotkeys === 'function') {
+        userActions.hotkeys.call(this, event);
+      } else {
+        this.handleHotkeys(event);
+      }
+    }
+
+    /**
+     * Called when this Player receives a hotkey keydown event.
+     * Supported player-wide hotkeys are:
+     *
+     *   f          - toggle fullscreen
+     *   m          - toggle mute
+     *   k or Space - toggle play/pause
+     *
+     * @param {Event} event
+     *        The `keydown` event that caused this function to be called.
+     */
+    handleHotkeys(event) {
+      const hotkeys = this.options_.userActions ? this.options_.userActions.hotkeys : {};
+
+      // set fullscreenKey, muteKey, playPauseKey from `hotkeys`, use defaults if not set
+      const {
+        fullscreenKey = keydownEvent => keycode.isEventKey(keydownEvent, 'f'),
+        muteKey = keydownEvent => keycode.isEventKey(keydownEvent, 'm'),
+        playPauseKey = keydownEvent => keycode.isEventKey(keydownEvent, 'k') || keycode.isEventKey(keydownEvent, 'Space')
+      } = hotkeys;
+      if (fullscreenKey.call(this, event)) {
+        event.preventDefault();
+        event.stopPropagation();
+        const FSToggle = Component$1.getComponent('FullscreenToggle');
+        if (document[this.fsApi_.fullscreenEnabled] !== false) {
+          FSToggle.prototype.handleClick.call(this, event);
+        }
+      } else if (muteKey.call(this, event)) {
+        event.preventDefault();
+        event.stopPropagation();
+        const MuteToggle = Component$1.getComponent('MuteToggle');
+        MuteToggle.prototype.handleClick.call(this, event);
+      } else if (playPauseKey.call(this, event)) {
+        event.preventDefault();
+        event.stopPropagation();
+        const PlayToggle = Component$1.getComponent('PlayToggle');
+        PlayToggle.prototype.handleClick.call(this, event);
+      }
+    }
+
+    /**
+     * Check whether the player can play a given mimetype
+     *
+     * @see https://www.w3.org/TR/2011/WD-html5-20110113/video.html#dom-navigator-canplaytype
+     *
+     * @param {string} type
+     *        The mimetype to check
+     *
+     * @return {string}
+     *         'probably', 'maybe', or '' (empty string)
+     */
+    canPlayType(type) {
+      let can;
+
+      // Loop through each playback technology in the options order
+      for (let i = 0, j = this.options_.techOrder; i < j.length; i++) {
+        const techName = j[i];
+        let tech = Tech.getTech(techName);
+
+        // Support old behavior of techs being registered as components.
+        // Remove once that deprecated behavior is removed.
+        if (!tech) {
+          tech = Component$1.getComponent(techName);
+        }
+
+        // Check if the current tech is defined before continuing
+        if (!tech) {
+          log$1.error(`The "${techName}" tech is undefined. Skipped browser support check for that tech.`);
+          continue;
+        }
+
+        // Check if the browser supports this technology
+        if (tech.isSupported()) {
+          can = tech.canPlayType(type);
+          if (can) {
+            return can;
+          }
+        }
+      }
+      return '';
+    }
+
+    /**
+     * Select source based on tech-order or source-order
+     * Uses source-order selection if `options.sourceOrder` is truthy. Otherwise,
+     * defaults to tech-order selection
+     *
+     * @param {Array} sources
+     *        The sources for a media asset
+     *
+     * @return {Object|boolean}
+     *         Object of source and tech order or false
+     */
+    selectSource(sources) {
+      // Get only the techs specified in `techOrder` that exist and are supported by the
+      // current platform
+      const techs = this.options_.techOrder.map(techName => {
+        return [techName, Tech.getTech(techName)];
+      }).filter(([techName, tech]) => {
+        // Check if the current tech is defined before continuing
+        if (tech) {
+          // Check if the browser supports this technology
+          return tech.isSupported();
+        }
+        log$1.error(`The "${techName}" tech is undefined. Skipped browser support check for that tech.`);
+        return false;
+      });
+
+      // Iterate over each `innerArray` element once per `outerArray` element and execute
+      // `tester` with both. If `tester` returns a non-falsy value, exit early and return
+      // that value.
+      const findFirstPassingTechSourcePair = function (outerArray, innerArray, tester) {
+        let found;
+        outerArray.some(outerChoice => {
+          return innerArray.some(innerChoice => {
+            found = tester(outerChoice, innerChoice);
+            if (found) {
+              return true;
+            }
+          });
+        });
+        return found;
+      };
+      let foundSourceAndTech;
+      const flip = fn => (a, b) => fn(b, a);
+      const finder = ([techName, tech], source) => {
+        if (tech.canPlaySource(source, this.options_[techName.toLowerCase()])) {
+          return {
+            source,
+            tech: techName
+          };
+        }
+      };
+
+      // Depending on the truthiness of `options.sourceOrder`, we swap the order of techs and sources
+      // to select from them based on their priority.
+      if (this.options_.sourceOrder) {
+        // Source-first ordering
+        foundSourceAndTech = findFirstPassingTechSourcePair(sources, techs, flip(finder));
+      } else {
+        // Tech-first ordering
+        foundSourceAndTech = findFirstPassingTechSourcePair(techs, sources, finder);
+      }
+      return foundSourceAndTech || false;
+    }
+
+    /**
+     * Executes source setting and getting logic
+     *
+     * @param {Tech~SourceObject|Tech~SourceObject[]|string} [source]
+     *        A SourceObject, an array of SourceObjects, or a string referencing
+     *        a URL to a media source. It is _highly recommended_ that an object
+     *        or array of objects is used here, so that source selection
+     *        algorithms can take the `type` into account.
+     *
+     *        If not provided, this method acts as a getter.
+     * @param {boolean} [isRetry]
+     *        Indicates whether this is being called internally as a result of a retry
+     *
+     * @return {string|undefined}
+     *         If the `source` argument is missing, returns the current source
+     *         URL. Otherwise, returns nothing/undefined.
+     */
+    handleSrc_(source, isRetry) {
+      // getter usage
+      if (typeof source === 'undefined') {
+        return this.cache_.src || '';
+      }
+
+      // Reset retry behavior for new source
+      if (this.resetRetryOnError_) {
+        this.resetRetryOnError_();
+      }
+
+      // filter out invalid sources and turn our source into
+      // an array of source objects
+      const sources = filterSource(source);
+
+      // if a source was passed in then it is invalid because
+      // it was filtered to a zero length Array. So we have to
+      // show an error
+      if (!sources.length) {
+        this.setTimeout(function () {
+          this.error({
+            code: 4,
+            message: this.options_.notSupportedMessage
+          });
+        }, 0);
+        return;
+      }
+
+      // initial sources
+      this.changingSrc_ = true;
+
+      // Only update the cached source list if we are not retrying a new source after error,
+      // since in that case we want to include the failed source(s) in the cache
+      if (!isRetry) {
+        this.cache_.sources = sources;
+      }
+      this.updateSourceCaches_(sources[0]);
+
+      // middlewareSource is the source after it has been changed by middleware
+      setSource(this, sources[0], (middlewareSource, mws) => {
+        this.middleware_ = mws;
+
+        // since sourceSet is async we have to update the cache again after we select a source since
+        // the source that is selected could be out of order from the cache update above this callback.
+        if (!isRetry) {
+          this.cache_.sources = sources;
+        }
+        this.updateSourceCaches_(middlewareSource);
+        const err = this.src_(middlewareSource);
+        if (err) {
+          if (sources.length > 1) {
+            return this.handleSrc_(sources.slice(1));
+          }
+          this.changingSrc_ = false;
+
+          // We need to wrap this in a timeout to give folks a chance to add error event handlers
+          this.setTimeout(function () {
+            this.error({
+              code: 4,
+              message: this.options_.notSupportedMessage
+            });
+          }, 0);
+
+          // we could not find an appropriate tech, but let's still notify the delegate that this is it
+          // this needs a better comment about why this is needed
+          this.triggerReady();
+          return;
+        }
+        setTech(mws, this.tech_);
+      });
+
+      // Try another available source if this one fails before playback.
+      if (sources.length > 1) {
+        const retry = () => {
+          // Remove the error modal
+          this.error(null);
+          this.handleSrc_(sources.slice(1), true);
+        };
+        const stopListeningForErrors = () => {
+          this.off('error', retry);
+        };
+        this.one('error', retry);
+        this.one('playing', stopListeningForErrors);
+        this.resetRetryOnError_ = () => {
+          this.off('error', retry);
+          this.off('playing', stopListeningForErrors);
+        };
+      }
+    }
+
+    /**
+     * Get or set the video source.
+     *
+     * @param {Tech~SourceObject|Tech~SourceObject[]|string} [source]
+     *        A SourceObject, an array of SourceObjects, or a string referencing
+     *        a URL to a media source. It is _highly recommended_ that an object
+     *        or array of objects is used here, so that source selection
+     *        algorithms can take the `type` into account.
+     *
+     *        If not provided, this method acts as a getter.
+     *
+     * @return {string|undefined}
+     *         If the `source` argument is missing, returns the current source
+     *         URL. Otherwise, returns nothing/undefined.
+     */
+    src(source) {
+      return this.handleSrc_(source, false);
+    }
+
+    /**
+     * Set the source object on the tech, returns a boolean that indicates whether
+     * there is a tech that can play the source or not
+     *
+     * @param {Tech~SourceObject} source
+     *        The source object to set on the Tech
+     *
+     * @return {boolean}
+     *         - True if there is no Tech to playback this source
+     *         - False otherwise
+     *
+     * @private
+     */
+    src_(source) {
+      const sourceTech = this.selectSource([source]);
+      if (!sourceTech) {
+        return true;
+      }
+      if (!titleCaseEquals(sourceTech.tech, this.techName_)) {
+        this.changingSrc_ = true;
+        // load this technology with the chosen source
+        this.loadTech_(sourceTech.tech, sourceTech.source);
+        this.tech_.ready(() => {
+          this.changingSrc_ = false;
+        });
+        return false;
+      }
+
+      // wait until the tech is ready to set the source
+      // and set it synchronously if possible (#2326)
+      this.ready(function () {
+        // The setSource tech method was added with source handlers
+        // so older techs won't support it
+        // We need to check the direct prototype for the case where subclasses
+        // of the tech do not support source handlers
+        if (this.tech_.constructor.prototype.hasOwnProperty('setSource')) {
+          this.techCall_('setSource', source);
+        } else {
+          this.techCall_('src', source.src);
+        }
+        this.changingSrc_ = false;
+      }, true);
+      return false;
+    }
+
+    /**
+     * Begin loading the src data.
+     */
+    load() {
+      // Workaround to use the load method with the VHS.
+      // Does not cover the case when the load method is called directly from the mediaElement.
+      if (this.tech_ && this.tech_.vhs) {
+        this.src(this.currentSource());
+        return;
+      }
+      this.techCall_('load');
+    }
+
+    /**
+     * Reset the player. Loads the first tech in the techOrder,
+     * removes all the text tracks in the existing `tech`,
+     * and calls `reset` on the `tech`.
+     */
+    reset() {
+      if (this.paused()) {
+        this.doReset_();
+      } else {
+        const playPromise = this.play();
+        silencePromise(playPromise.then(() => this.doReset_()));
+      }
+    }
+    doReset_() {
+      if (this.tech_) {
+        this.tech_.clearTracks('text');
+      }
+      this.removeClass('vjs-playing');
+      this.addClass('vjs-paused');
+      this.resetCache_();
+      this.poster('');
+      this.loadTech_(this.options_.techOrder[0], null);
+      this.techCall_('reset');
+      this.resetControlBarUI_();
+      this.error(null);
+      if (this.titleBar) {
+        this.titleBar.update({
+          title: undefined,
+          description: undefined
+        });
+      }
+      if (isEvented(this)) {
+        this.trigger('playerreset');
+      }
+    }
+
+    /**
+     * Reset Control Bar's UI by calling sub-methods that reset
+     * all of Control Bar's components
+     */
+    resetControlBarUI_() {
+      this.resetProgressBar_();
+      this.resetPlaybackRate_();
+      this.resetVolumeBar_();
+    }
+
+    /**
+     * Reset tech's progress so progress bar is reset in the UI
+     */
+    resetProgressBar_() {
+      this.currentTime(0);
+      const {
+        currentTimeDisplay,
+        durationDisplay,
+        progressControl,
+        remainingTimeDisplay
+      } = this.controlBar || {};
+      const {
+        seekBar
+      } = progressControl || {};
+      if (currentTimeDisplay) {
+        currentTimeDisplay.updateContent();
+      }
+      if (durationDisplay) {
+        durationDisplay.updateContent();
+      }
+      if (remainingTimeDisplay) {
+        remainingTimeDisplay.updateContent();
+      }
+      if (seekBar) {
+        seekBar.update();
+        if (seekBar.loadProgressBar) {
+          seekBar.loadProgressBar.update();
+        }
+      }
+    }
+
+    /**
+     * Reset Playback ratio
+     */
+    resetPlaybackRate_() {
+      this.playbackRate(this.defaultPlaybackRate());
+      this.handleTechRateChange_();
+    }
+
+    /**
+     * Reset Volume bar
+     */
+    resetVolumeBar_() {
+      this.volume(1.0);
+      this.trigger('volumechange');
+    }
+
+    /**
+     * Returns all of the current source objects.
+     *
+     * @return {Tech~SourceObject[]}
+     *         The current source objects
+     */
+    currentSources() {
+      const source = this.currentSource();
+      const sources = [];
+
+      // assume `{}` or `{ src }`
+      if (Object.keys(source).length !== 0) {
+        sources.push(source);
+      }
+      return this.cache_.sources || sources;
+    }
+
+    /**
+     * Returns the current source object.
+     *
+     * @return {Tech~SourceObject}
+     *         The current source object
+     */
+    currentSource() {
+      return this.cache_.source || {};
+    }
+
+    /**
+     * Returns the fully qualified URL of the current source value e.g. http://mysite.com/video.mp4
+     * Can be used in conjunction with `currentType` to assist in rebuilding the current source object.
+     *
+     * @return {string}
+     *         The current source
+     */
+    currentSrc() {
+      return this.currentSource() && this.currentSource().src || '';
+    }
+
+    /**
+     * Get the current source type e.g. video/mp4
+     * This can allow you rebuild the current source object so that you could load the same
+     * source and tech later
+     *
+     * @return {string}
+     *         The source MIME type
+     */
+    currentType() {
+      return this.currentSource() && this.currentSource().type || '';
+    }
+
+    /**
+     * Get or set the preload attribute
+     *
+     * @param {'none'|'auto'|'metadata'} [value]
+     *        Preload mode to pass to tech
+     *
+     * @return {string|undefined}
+     *         - The preload attribute value when getting
+     *         - Nothing when setting
+     */
+    preload(value) {
+      if (value !== undefined) {
+        this.techCall_('setPreload', value);
+        this.options_.preload = value;
+        return;
+      }
+      return this.techGet_('preload');
+    }
+
+    /**
+     * Get or set the autoplay option. When this is a boolean it will
+     * modify the attribute on the tech. When this is a string the attribute on
+     * the tech will be removed and `Player` will handle autoplay on loadstarts.
+     *
+     * @param {boolean|'play'|'muted'|'any'} [value]
+     *        - true: autoplay using the browser behavior
+     *        - false: do not autoplay
+     *        - 'play': call play() on every loadstart
+     *        - 'muted': call muted() then play() on every loadstart
+     *        - 'any': call play() on every loadstart. if that fails call muted() then play().
+     *        - *: values other than those listed here will be set `autoplay` to true
+     *
+     * @return {boolean|string|undefined}
+     *         - The current value of autoplay when getting
+     *         - Nothing when setting
+     */
+    autoplay(value) {
+      // getter usage
+      if (value === undefined) {
+        return this.options_.autoplay || false;
+      }
+      let techAutoplay;
+
+      // if the value is a valid string set it to that, or normalize `true` to 'play', if need be
+      if (typeof value === 'string' && /(any|play|muted)/.test(value) || value === true && this.options_.normalizeAutoplay) {
+        this.options_.autoplay = value;
+        this.manualAutoplay_(typeof value === 'string' ? value : 'play');
+        techAutoplay = false;
+
+        // any falsy value sets autoplay to false in the browser,
+        // lets do the same
+      } else if (!value) {
+        this.options_.autoplay = false;
+
+        // any other value (ie truthy) sets autoplay to true
+      } else {
+        this.options_.autoplay = true;
+      }
+      techAutoplay = typeof techAutoplay === 'undefined' ? this.options_.autoplay : techAutoplay;
+
+      // if we don't have a tech then we do not queue up
+      // a setAutoplay call on tech ready. We do this because the
+      // autoplay option will be passed in the constructor and we
+      // do not need to set it twice
+      if (this.tech_) {
+        this.techCall_('setAutoplay', techAutoplay);
+      }
+    }
+
+    /**
+     * Set or unset the playsinline attribute.
+     * Playsinline tells the browser that non-fullscreen playback is preferred.
+     *
+     * @param {boolean} [value]
+     *        - true means that we should try to play inline by default
+     *        - false means that we should use the browser's default playback mode,
+     *          which in most cases is inline. iOS Safari is a notable exception
+     *          and plays fullscreen by default.
+     *
+     * @return {string|undefined}
+     *         - the current value of playsinline
+     *         - Nothing when setting
+     *
+     * @see [Spec]{@link https://html.spec.whatwg.org/#attr-video-playsinline}
+     */
+    playsinline(value) {
+      if (value !== undefined) {
+        this.techCall_('setPlaysinline', value);
+        this.options_.playsinline = value;
+      }
+      return this.techGet_('playsinline');
+    }
+
+    /**
+     * Get or set the loop attribute on the video element.
+     *
+     * @param {boolean} [value]
+     *        - true means that we should loop the video
+     *        - false means that we should not loop the video
+     *
+     * @return {boolean|undefined}
+     *         - The current value of loop when getting
+     *         - Nothing when setting
+     */
+    loop(value) {
+      if (value !== undefined) {
+        this.techCall_('setLoop', value);
+        this.options_.loop = value;
+        return;
+      }
+      return this.techGet_('loop');
+    }
+
+    /**
+     * Get or set the poster image source url
+     *
+     * @fires Player#posterchange
+     *
+     * @param {string} [src]
+     *        Poster image source URL
+     *
+     * @return {string|undefined}
+     *         - The current value of poster when getting
+     *         - Nothing when setting
+     */
+    poster(src) {
+      if (src === undefined) {
+        return this.poster_;
+      }
+
+      // The correct way to remove a poster is to set as an empty string
+      // other falsey values will throw errors
+      if (!src) {
+        src = '';
+      }
+      if (src === this.poster_) {
+        return;
+      }
+
+      // update the internal poster variable
+      this.poster_ = src;
+
+      // update the tech's poster
+      this.techCall_('setPoster', src);
+      this.isPosterFromTech_ = false;
+
+      // alert components that the poster has been set
+      /**
+       * This event fires when the poster image is changed on the player.
+       *
+       * @event Player#posterchange
+       * @type {Event}
+       */
+      this.trigger('posterchange');
+    }
+
+    /**
+     * Some techs (e.g. YouTube) can provide a poster source in an
+     * asynchronous way. We want the poster component to use this
+     * poster source so that it covers up the tech's controls.
+     * (YouTube's play button). However we only want to use this
+     * source if the player user hasn't set a poster through
+     * the normal APIs.
+     *
+     * @fires Player#posterchange
+     * @listens Tech#posterchange
+     * @private
+     */
+    handleTechPosterChange_() {
+      if ((!this.poster_ || this.options_.techCanOverridePoster) && this.tech_ && this.tech_.poster) {
+        const newPoster = this.tech_.poster() || '';
+        if (newPoster !== this.poster_) {
+          this.poster_ = newPoster;
+          this.isPosterFromTech_ = true;
+
+          // Let components know the poster has changed
+          this.trigger('posterchange');
+        }
+      }
+    }
+
+    /**
+     * Get or set whether or not the controls are showing.
+     *
+     * @fires Player#controlsenabled
+     *
+     * @param {boolean} [bool]
+     *        - true to turn controls on
+     *        - false to turn controls off
+     *
+     * @return {boolean|undefined}
+     *         - The current value of controls when getting
+     *         - Nothing when setting
+     */
+    controls(bool) {
+      if (bool === undefined) {
+        return !!this.controls_;
+      }
+      bool = !!bool;
+
+      // Don't trigger a change event unless it actually changed
+      if (this.controls_ === bool) {
+        return;
+      }
+      this.controls_ = bool;
+      if (this.usingNativeControls()) {
+        this.techCall_('setControls', bool);
+      }
+      if (this.controls_) {
+        this.removeClass('vjs-controls-disabled');
+        this.addClass('vjs-controls-enabled');
+        /**
+         * @event Player#controlsenabled
+         * @type {Event}
+         */
+        this.trigger('controlsenabled');
+        if (!this.usingNativeControls()) {
+          this.addTechControlsListeners_();
+        }
+      } else {
+        this.removeClass('vjs-controls-enabled');
+        this.addClass('vjs-controls-disabled');
+        /**
+         * @event Player#controlsdisabled
+         * @type {Event}
+         */
+        this.trigger('controlsdisabled');
+        if (!this.usingNativeControls()) {
+          this.removeTechControlsListeners_();
+        }
+      }
+    }
+
+    /**
+     * Toggle native controls on/off. Native controls are the controls built into
+     * devices (e.g. default iPhone controls) or other techs
+     * (e.g. Vimeo Controls)
+     * **This should only be set by the current tech, because only the tech knows
+     * if it can support native controls**
+     *
+     * @fires Player#usingnativecontrols
+     * @fires Player#usingcustomcontrols
+     *
+     * @param {boolean} [bool]
+     *        - true to turn native controls on
+     *        - false to turn native controls off
+     *
+     * @return {boolean|undefined}
+     *         - The current value of native controls when getting
+     *         - Nothing when setting
+     */
+    usingNativeControls(bool) {
+      if (bool === undefined) {
+        return !!this.usingNativeControls_;
+      }
+      bool = !!bool;
+
+      // Don't trigger a change event unless it actually changed
+      if (this.usingNativeControls_ === bool) {
+        return;
+      }
+      this.usingNativeControls_ = bool;
+      if (this.usingNativeControls_) {
+        this.addClass('vjs-using-native-controls');
+
+        /**
+         * player is using the native device controls
+         *
+         * @event Player#usingnativecontrols
+         * @type {Event}
+         */
+        this.trigger('usingnativecontrols');
+      } else {
+        this.removeClass('vjs-using-native-controls');
+
+        /**
+         * player is using the custom HTML controls
+         *
+         * @event Player#usingcustomcontrols
+         * @type {Event}
+         */
+        this.trigger('usingcustomcontrols');
+      }
+    }
+
+    /**
+     * Set or get the current MediaError
+     *
+     * @fires Player#error
+     *
+     * @param  {MediaError|string|number} [err]
+     *         A MediaError or a string/number to be turned
+     *         into a MediaError
+     *
+     * @return {MediaError|null|undefined}
+     *         - The current MediaError when getting (or null)
+     *         - Nothing when setting
+     */
+    error(err) {
+      if (err === undefined) {
+        return this.error_ || null;
+      }
+
+      // allow hooks to modify error object
+      hooks('beforeerror').forEach(hookFunction => {
+        const newErr = hookFunction(this, err);
+        if (!(isObject$1(newErr) && !Array.isArray(newErr) || typeof newErr === 'string' || typeof newErr === 'number' || newErr === null)) {
+          this.log.error('please return a value that MediaError expects in beforeerror hooks');
+          return;
+        }
+        err = newErr;
+      });
+
+      // Suppress the first error message for no compatible source until
+      // user interaction
+      if (this.options_.suppressNotSupportedError && err && err.code === 4) {
+        const triggerSuppressedError = function () {
+          this.error(err);
+        };
+        this.options_.suppressNotSupportedError = false;
+        this.any(['click', 'touchstart'], triggerSuppressedError);
+        this.one('loadstart', function () {
+          this.off(['click', 'touchstart'], triggerSuppressedError);
+        });
+        return;
+      }
+
+      // restoring to default
+      if (err === null) {
+        this.error_ = null;
+        this.removeClass('vjs-error');
+        if (this.errorDisplay) {
+          this.errorDisplay.close();
+        }
+        return;
+      }
+      this.error_ = new MediaError(err);
+
+      // add the vjs-error classname to the player
+      this.addClass('vjs-error');
+
+      // log the name of the error type and any message
+      // IE11 logs "[object object]" and required you to expand message to see error object
+      log$1.error(`(CODE:${this.error_.code} ${MediaError.errorTypes[this.error_.code]})`, this.error_.message, this.error_);
+
+      /**
+       * @event Player#error
+       * @type {Event}
+       */
+      this.trigger('error');
+
+      // notify hooks of the per player error
+      hooks('error').forEach(hookFunction => hookFunction(this, this.error_));
+      return;
+    }
+
+    /**
+     * Report user activity
+     *
+     * @param {Object} event
+     *        Event object
+     */
+    reportUserActivity(event) {
+      this.userActivity_ = true;
+    }
+
+    /**
+     * Get/set if user is active
+     *
+     * @fires Player#useractive
+     * @fires Player#userinactive
+     *
+     * @param {boolean} [bool]
+     *        - true if the user is active
+     *        - false if the user is inactive
+     *
+     * @return {boolean|undefined}
+     *         - The current value of userActive when getting
+     *         - Nothing when setting
+     */
+    userActive(bool) {
+      if (bool === undefined) {
+        return this.userActive_;
+      }
+      bool = !!bool;
+      if (bool === this.userActive_) {
+        return;
+      }
+      this.userActive_ = bool;
+      if (this.userActive_) {
+        this.userActivity_ = true;
+        this.removeClass('vjs-user-inactive');
+        this.addClass('vjs-user-active');
+        /**
+         * @event Player#useractive
+         * @type {Event}
+         */
+        this.trigger('useractive');
+        return;
+      }
+
+      // Chrome/Safari/IE have bugs where when you change the cursor it can
+      // trigger a mousemove event. This causes an issue when you're hiding
+      // the cursor when the user is inactive, and a mousemove signals user
+      // activity. Making it impossible to go into inactive mode. Specifically
+      // this happens in fullscreen when we really need to hide the cursor.
+      //
+      // When this gets resolved in ALL browsers it can be removed
+      // https://code.google.com/p/chromium/issues/detail?id=103041
+      if (this.tech_) {
+        this.tech_.one('mousemove', function (e) {
+          e.stopPropagation();
+          e.preventDefault();
+        });
+      }
+      this.userActivity_ = false;
+      this.removeClass('vjs-user-active');
+      this.addClass('vjs-user-inactive');
+      /**
+       * @event Player#userinactive
+       * @type {Event}
+       */
+      this.trigger('userinactive');
+    }
+
+    /**
+     * Listen for user activity based on timeout value
+     *
+     * @private
+     */
+    listenForUserActivity_() {
+      let mouseInProgress;
+      let lastMoveX;
+      let lastMoveY;
+      const handleActivity = bind_(this, this.reportUserActivity);
+      const handleMouseMove = function (e) {
+        // #1068 - Prevent mousemove spamming
+        // Chrome Bug: https://code.google.com/p/chromium/issues/detail?id=366970
+        if (e.screenX !== lastMoveX || e.screenY !== lastMoveY) {
+          lastMoveX = e.screenX;
+          lastMoveY = e.screenY;
+          handleActivity();
+        }
+      };
+      const handleMouseDown = function () {
+        handleActivity();
+        // For as long as the they are touching the device or have their mouse down,
+        // we consider them active even if they're not moving their finger or mouse.
+        // So we want to continue to update that they are active
+        this.clearInterval(mouseInProgress);
+        // Setting userActivity=true now and setting the interval to the same time
+        // as the activityCheck interval (250) should ensure we never miss the
+        // next activityCheck
+        mouseInProgress = this.setInterval(handleActivity, 250);
+      };
+      const handleMouseUpAndMouseLeave = function (event) {
+        handleActivity();
+        // Stop the interval that maintains activity if the mouse/touch is down
+        this.clearInterval(mouseInProgress);
+      };
+
+      // Any mouse movement will be considered user activity
+      this.on('mousedown', handleMouseDown);
+      this.on('mousemove', handleMouseMove);
+      this.on('mouseup', handleMouseUpAndMouseLeave);
+      this.on('mouseleave', handleMouseUpAndMouseLeave);
+      const controlBar = this.getChild('controlBar');
+
+      // Fixes bug on Android & iOS where when tapping progressBar (when control bar is displayed)
+      // controlBar would no longer be hidden by default timeout.
+      if (controlBar && !IS_IOS && !IS_ANDROID) {
+        controlBar.on('mouseenter', function (event) {
+          if (this.player().options_.inactivityTimeout !== 0) {
+            this.player().cache_.inactivityTimeout = this.player().options_.inactivityTimeout;
+          }
+          this.player().options_.inactivityTimeout = 0;
+        });
+        controlBar.on('mouseleave', function (event) {
+          this.player().options_.inactivityTimeout = this.player().cache_.inactivityTimeout;
+        });
+      }
+
+      // Listen for keyboard navigation
+      // Shouldn't need to use inProgress interval because of key repeat
+      this.on('keydown', handleActivity);
+      this.on('keyup', handleActivity);
+
+      // Run an interval every 250 milliseconds instead of stuffing everything into
+      // the mousemove/touchmove function itself, to prevent performance degradation.
+      // `this.reportUserActivity` simply sets this.userActivity_ to true, which
+      // then gets picked up by this loop
+      // http://ejohn.org/blog/learning-from-twitter/
+      let inactivityTimeout;
+
+      /** @this Player */
+      const activityCheck = function () {
+        // Check to see if mouse/touch activity has happened
+        if (!this.userActivity_) {
+          return;
+        }
+
+        // Reset the activity tracker
+        this.userActivity_ = false;
+
+        // If the user state was inactive, set the state to active
+        this.userActive(true);
+
+        // Clear any existing inactivity timeout to start the timer over
+        this.clearTimeout(inactivityTimeout);
+        const timeout = this.options_.inactivityTimeout;
+        if (timeout <= 0) {
+          return;
+        }
+
+        // In <timeout> milliseconds, if no more activity has occurred the
+        // user will be considered inactive
+        inactivityTimeout = this.setTimeout(function () {
+          // Protect against the case where the inactivityTimeout can trigger just
+          // before the next user activity is picked up by the activity check loop
+          // causing a flicker
+          if (!this.userActivity_) {
+            this.userActive(false);
+          }
+        }, timeout);
+      };
+      this.setInterval(activityCheck, 250);
+    }
+
+    /**
+     * Gets or sets the current playback rate. A playback rate of
+     * 1.0 represents normal speed and 0.5 would indicate half-speed
+     * playback, for instance.
+     *
+     * @see https://html.spec.whatwg.org/multipage/embedded-content.html#dom-media-playbackrate
+     *
+     * @param {number} [rate]
+     *       New playback rate to set.
+     *
+     * @return {number|undefined}
+     *         - The current playback rate when getting or 1.0
+     *         - Nothing when setting
+     */
+    playbackRate(rate) {
+      if (rate !== undefined) {
+        // NOTE: this.cache_.lastPlaybackRate is set from the tech handler
+        // that is registered above
+        this.techCall_('setPlaybackRate', rate);
+        return;
+      }
+      if (this.tech_ && this.tech_.featuresPlaybackRate) {
+        return this.cache_.lastPlaybackRate || this.techGet_('playbackRate');
+      }
+      return 1.0;
+    }
+
+    /**
+     * Gets or sets the current default playback rate. A default playback rate of
+     * 1.0 represents normal speed and 0.5 would indicate half-speed playback, for instance.
+     * defaultPlaybackRate will only represent what the initial playbackRate of a video was, not
+     * not the current playbackRate.
+     *
+     * @see https://html.spec.whatwg.org/multipage/embedded-content.html#dom-media-defaultplaybackrate
+     *
+     * @param {number} [rate]
+     *       New default playback rate to set.
+     *
+     * @return {number|undefined}
+     *         - The default playback rate when getting or 1.0
+     *         - Nothing when setting
+     */
+    defaultPlaybackRate(rate) {
+      if (rate !== undefined) {
+        return this.techCall_('setDefaultPlaybackRate', rate);
+      }
+      if (this.tech_ && this.tech_.featuresPlaybackRate) {
+        return this.techGet_('defaultPlaybackRate');
+      }
+      return 1.0;
+    }
+
+    /**
+     * Gets or sets the audio flag
+     *
+     * @param {boolean} [bool]
+     *        - true signals that this is an audio player
+     *        - false signals that this is not an audio player
+     *
+     * @return {boolean|undefined}
+     *         - The current value of isAudio when getting
+     *         - Nothing when setting
+     */
+    isAudio(bool) {
+      if (bool !== undefined) {
+        this.isAudio_ = !!bool;
+        return;
+      }
+      return !!this.isAudio_;
+    }
+    enableAudioOnlyUI_() {
+      // Update styling immediately to show the control bar so we can get its height
+      this.addClass('vjs-audio-only-mode');
+      const playerChildren = this.children();
+      const controlBar = this.getChild('ControlBar');
+      const controlBarHeight = controlBar && controlBar.currentHeight();
+
+      // Hide all player components except the control bar. Control bar components
+      // needed only for video are hidden with CSS
+      playerChildren.forEach(child => {
+        if (child === controlBar) {
+          return;
+        }
+        if (child.el_ && !child.hasClass('vjs-hidden')) {
+          child.hide();
+          this.audioOnlyCache_.hiddenChildren.push(child);
+        }
+      });
+      this.audioOnlyCache_.playerHeight = this.currentHeight();
+
+      // Set the player height the same as the control bar
+      this.height(controlBarHeight);
+      this.trigger('audioonlymodechange');
+    }
+    disableAudioOnlyUI_() {
+      this.removeClass('vjs-audio-only-mode');
+
+      // Show player components that were previously hidden
+      this.audioOnlyCache_.hiddenChildren.forEach(child => child.show());
+
+      // Reset player height
+      this.height(this.audioOnlyCache_.playerHeight);
+      this.trigger('audioonlymodechange');
+    }
+
+    /**
+     * Get the current audioOnlyMode state or set audioOnlyMode to true or false.
+     *
+     * Setting this to `true` will hide all player components except the control bar,
+     * as well as control bar components needed only for video.
+     *
+     * @param {boolean} [value]
+     *         The value to set audioOnlyMode to.
+     *
+     * @return {Promise|boolean}
+     *        A Promise is returned when setting the state, and a boolean when getting
+     *        the present state
+     */
+    audioOnlyMode(value) {
+      if (typeof value !== 'boolean' || value === this.audioOnlyMode_) {
+        return this.audioOnlyMode_;
+      }
+      this.audioOnlyMode_ = value;
+
+      // Enable Audio Only Mode
+      if (value) {
+        const exitPromises = [];
+
+        // Fullscreen and PiP are not supported in audioOnlyMode, so exit if we need to.
+        if (this.isInPictureInPicture()) {
+          exitPromises.push(this.exitPictureInPicture());
+        }
+        if (this.isFullscreen()) {
+          exitPromises.push(this.exitFullscreen());
+        }
+        if (this.audioPosterMode()) {
+          exitPromises.push(this.audioPosterMode(false));
+        }
+        return Promise.all(exitPromises).then(() => this.enableAudioOnlyUI_());
+      }
+
+      // Disable Audio Only Mode
+      return Promise.resolve().then(() => this.disableAudioOnlyUI_());
+    }
+    enablePosterModeUI_() {
+      // Hide the video element and show the poster image to enable posterModeUI
+      const tech = this.tech_ && this.tech_;
+      tech.hide();
+      this.addClass('vjs-audio-poster-mode');
+      this.trigger('audiopostermodechange');
+    }
+    disablePosterModeUI_() {
+      // Show the video element and hide the poster image to disable posterModeUI
+      const tech = this.tech_ && this.tech_;
+      tech.show();
+      this.removeClass('vjs-audio-poster-mode');
+      this.trigger('audiopostermodechange');
+    }
+
+    /**
+     * Get the current audioPosterMode state or set audioPosterMode to true or false
+     *
+     * @param {boolean} [value]
+     *         The value to set audioPosterMode to.
+     *
+     * @return {Promise|boolean}
+     *         A Promise is returned when setting the state, and a boolean when getting
+     *        the present state
+     */
+    audioPosterMode(value) {
+      if (typeof value !== 'boolean' || value === this.audioPosterMode_) {
+        return this.audioPosterMode_;
+      }
+      this.audioPosterMode_ = value;
+      if (value) {
+        if (this.audioOnlyMode()) {
+          const audioOnlyModePromise = this.audioOnlyMode(false);
+          return audioOnlyModePromise.then(() => {
+            // enable audio poster mode after audio only mode is disabled
+            this.enablePosterModeUI_();
+          });
+        }
+        return Promise.resolve().then(() => {
+          // enable audio poster mode
+          this.enablePosterModeUI_();
+        });
+      }
+      return Promise.resolve().then(() => {
+        // disable audio poster mode
+        this.disablePosterModeUI_();
+      });
+    }
+
+    /**
+     * A helper method for adding a {@link TextTrack} to our
+     * {@link TextTrackList}.
+     *
+     * In addition to the W3C settings we allow adding additional info through options.
+     *
+     * @see http://www.w3.org/html/wg/drafts/html/master/embedded-content-0.html#dom-media-addtexttrack
+     *
+     * @param {string} [kind]
+     *        the kind of TextTrack you are adding
+     *
+     * @param {string} [label]
+     *        the label to give the TextTrack label
+     *
+     * @param {string} [language]
+     *        the language to set on the TextTrack
+     *
+     * @return {TextTrack|undefined}
+     *         the TextTrack that was added or undefined
+     *         if there is no tech
+     */
+    addTextTrack(kind, label, language) {
+      if (this.tech_) {
+        return this.tech_.addTextTrack(kind, label, language);
+      }
+    }
+
+    /**
+     * Create a remote {@link TextTrack} and an {@link HTMLTrackElement}.
+     *
+     * @param {Object} options
+     *        Options to pass to {@link HTMLTrackElement} during creation. See
+     *        {@link HTMLTrackElement} for object properties that you should use.
+     *
+     * @param {boolean} [manualCleanup=false] if set to true, the TextTrack will not be removed
+     *                                        from the TextTrackList and HtmlTrackElementList
+     *                                        after a source change
+     *
+     * @return { import('./tracks/html-track-element').default }
+     *         the HTMLTrackElement that was created and added
+     *         to the HtmlTrackElementList and the remote
+     *         TextTrackList
+     *
+     */
+    addRemoteTextTrack(options, manualCleanup) {
+      if (this.tech_) {
+        return this.tech_.addRemoteTextTrack(options, manualCleanup);
+      }
+    }
+
+    /**
+     * Remove a remote {@link TextTrack} from the respective
+     * {@link TextTrackList} and {@link HtmlTrackElementList}.
+     *
+     * @param {Object} track
+     *        Remote {@link TextTrack} to remove
+     *
+     * @return {undefined}
+     *         does not return anything
+     */
+    removeRemoteTextTrack(obj = {}) {
+      let {
+        track
+      } = obj;
+      if (!track) {
+        track = obj;
+      }
+
+      // destructure the input into an object with a track argument, defaulting to arguments[0]
+      // default the whole argument to an empty object if nothing was passed in
+
+      if (this.tech_) {
+        return this.tech_.removeRemoteTextTrack(track);
+      }
+    }
+
+    /**
+     * Gets available media playback quality metrics as specified by the W3C's Media
+     * Playback Quality API.
+     *
+     * @see [Spec]{@link https://wicg.github.io/media-playback-quality}
+     *
+     * @return {Object|undefined}
+     *         An object with supported media playback quality metrics or undefined if there
+     *         is no tech or the tech does not support it.
+     */
+    getVideoPlaybackQuality() {
+      return this.techGet_('getVideoPlaybackQuality');
+    }
+
+    /**
+     * Get video width
+     *
+     * @return {number}
+     *         current video width
+     */
+    videoWidth() {
+      return this.tech_ && this.tech_.videoWidth && this.tech_.videoWidth() || 0;
+    }
+
+    /**
+     * Get video height
+     *
+     * @return {number}
+     *         current video height
+     */
+    videoHeight() {
+      return this.tech_ && this.tech_.videoHeight && this.tech_.videoHeight() || 0;
+    }
+
+    /**
+     * Set or get the player's language code.
+     *
+     * Changing the language will trigger
+     * [languagechange]{@link Player#event:languagechange}
+     * which Components can use to update control text.
+     * ClickableComponent will update its control text by default on
+     * [languagechange]{@link Player#event:languagechange}.
+     *
+     * @fires Player#languagechange
+     *
+     * @param {string} [code]
+     *        the language code to set the player to
+     *
+     * @return {string|undefined}
+     *         - The current language code when getting
+     *         - Nothing when setting
+     */
+    language(code) {
+      if (code === undefined) {
+        return this.language_;
+      }
+      if (this.language_ !== String(code).toLowerCase()) {
+        this.language_ = String(code).toLowerCase();
+
+        // during first init, it's possible some things won't be evented
+        if (isEvented(this)) {
+          /**
+          * fires when the player language change
+          *
+          * @event Player#languagechange
+          * @type {Event}
+          */
+          this.trigger('languagechange');
+        }
+      }
+    }
+
+    /**
+     * Get the player's language dictionary
+     * Merge every time, because a newly added plugin might call videojs.addLanguage() at any time
+     * Languages specified directly in the player options have precedence
+     *
+     * @return {Array}
+     *         An array of of supported languages
+     */
+    languages() {
+      return merge$2(Player.prototype.options_.languages, this.languages_);
+    }
+
+    /**
+     * returns a JavaScript object representing the current track
+     * information. **DOES not return it as JSON**
+     *
+     * @return {Object}
+     *         Object representing the current of track info
+     */
+    toJSON() {
+      const options = merge$2(this.options_);
+      const tracks = options.tracks;
+      options.tracks = [];
+      for (let i = 0; i < tracks.length; i++) {
+        let track = tracks[i];
+
+        // deep merge tracks and null out player so no circular references
+        track = merge$2(track);
+        track.player = undefined;
+        options.tracks[i] = track;
+      }
+      return options;
+    }
+
+    /**
+     * Creates a simple modal dialog (an instance of the {@link ModalDialog}
+     * component) that immediately overlays the player with arbitrary
+     * content and removes itself when closed.
+     *
+     * @param {string|Function|Element|Array|null} content
+     *        Same as {@link ModalDialog#content}'s param of the same name.
+     *        The most straight-forward usage is to provide a string or DOM
+     *        element.
+     *
+     * @param {Object} [options]
+     *        Extra options which will be passed on to the {@link ModalDialog}.
+     *
+     * @return {ModalDialog}
+     *         the {@link ModalDialog} that was created
+     */
+    createModal(content, options) {
+      options = options || {};
+      options.content = content || '';
+      const modal = new ModalDialog(this, options);
+      this.addChild(modal);
+      modal.on('dispose', () => {
+        this.removeChild(modal);
+      });
+      modal.open();
+      return modal;
+    }
+
+    /**
+     * Change breakpoint classes when the player resizes.
+     *
+     * @private
+     */
+    updateCurrentBreakpoint_() {
+      if (!this.responsive()) {
+        return;
+      }
+      const currentBreakpoint = this.currentBreakpoint();
+      const currentWidth = this.currentWidth();
+      for (let i = 0; i < BREAKPOINT_ORDER.length; i++) {
+        const candidateBreakpoint = BREAKPOINT_ORDER[i];
+        const maxWidth = this.breakpoints_[candidateBreakpoint];
+        if (currentWidth <= maxWidth) {
+          // The current breakpoint did not change, nothing to do.
+          if (currentBreakpoint === candidateBreakpoint) {
+            return;
+          }
+
+          // Only remove a class if there is a current breakpoint.
+          if (currentBreakpoint) {
+            this.removeClass(BREAKPOINT_CLASSES[currentBreakpoint]);
+          }
+          this.addClass(BREAKPOINT_CLASSES[candidateBreakpoint]);
+          this.breakpoint_ = candidateBreakpoint;
+          break;
+        }
+      }
+    }
+
+    /**
+     * Removes the current breakpoint.
+     *
+     * @private
+     */
+    removeCurrentBreakpoint_() {
+      const className = this.currentBreakpointClass();
+      this.breakpoint_ = '';
+      if (className) {
+        this.removeClass(className);
+      }
+    }
+
+    /**
+     * Get or set breakpoints on the player.
+     *
+     * Calling this method with an object or `true` will remove any previous
+     * custom breakpoints and start from the defaults again.
+     *
+     * @param  {Object|boolean} [breakpoints]
+     *         If an object is given, it can be used to provide custom
+     *         breakpoints. If `true` is given, will set default breakpoints.
+     *         If this argument is not given, will simply return the current
+     *         breakpoints.
+     *
+     * @param  {number} [breakpoints.tiny]
+     *         The maximum width for the "vjs-layout-tiny" class.
+     *
+     * @param  {number} [breakpoints.xsmall]
+     *         The maximum width for the "vjs-layout-x-small" class.
+     *
+     * @param  {number} [breakpoints.small]
+     *         The maximum width for the "vjs-layout-small" class.
+     *
+     * @param  {number} [breakpoints.medium]
+     *         The maximum width for the "vjs-layout-medium" class.
+     *
+     * @param  {number} [breakpoints.large]
+     *         The maximum width for the "vjs-layout-large" class.
+     *
+     * @param  {number} [breakpoints.xlarge]
+     *         The maximum width for the "vjs-layout-x-large" class.
+     *
+     * @param  {number} [breakpoints.huge]
+     *         The maximum width for the "vjs-layout-huge" class.
+     *
+     * @return {Object}
+     *         An object mapping breakpoint names to maximum width values.
+     */
+    breakpoints(breakpoints) {
+      // Used as a getter.
+      if (breakpoints === undefined) {
+        return Object.assign(this.breakpoints_);
+      }
+      this.breakpoint_ = '';
+      this.breakpoints_ = Object.assign({}, DEFAULT_BREAKPOINTS, breakpoints);
+
+      // When breakpoint definitions change, we need to update the currently
+      // selected breakpoint.
+      this.updateCurrentBreakpoint_();
+
+      // Clone the breakpoints before returning.
+      return Object.assign(this.breakpoints_);
+    }
+
+    /**
+     * Get or set a flag indicating whether or not this player should adjust
+     * its UI based on its dimensions.
+     *
+     * @param  {boolean} [value]
+     *         Should be `true` if the player should adjust its UI based on its
+     *         dimensions; otherwise, should be `false`.
+     *
+     * @return {boolean|undefined}
+     *         Will be `true` if this player should adjust its UI based on its
+     *         dimensions; otherwise, will be `false`.
+     *         Nothing if setting
+     */
+    responsive(value) {
+      // Used as a getter.
+      if (value === undefined) {
+        return this.responsive_;
+      }
+      value = Boolean(value);
+      const current = this.responsive_;
+
+      // Nothing changed.
+      if (value === current) {
+        return;
+      }
+
+      // The value actually changed, set it.
+      this.responsive_ = value;
+
+      // Start listening for breakpoints and set the initial breakpoint if the
+      // player is now responsive.
+      if (value) {
+        this.on('playerresize', this.boundUpdateCurrentBreakpoint_);
+        this.updateCurrentBreakpoint_();
+
+        // Stop listening for breakpoints if the player is no longer responsive.
+      } else {
+        this.off('playerresize', this.boundUpdateCurrentBreakpoint_);
+        this.removeCurrentBreakpoint_();
+      }
+      return value;
+    }
+
+    /**
+     * Get current breakpoint name, if any.
+     *
+     * @return {string}
+     *         If there is currently a breakpoint set, returns a the key from the
+     *         breakpoints object matching it. Otherwise, returns an empty string.
+     */
+    currentBreakpoint() {
+      return this.breakpoint_;
+    }
+
+    /**
+     * Get the current breakpoint class name.
+     *
+     * @return {string}
+     *         The matching class name (e.g. `"vjs-layout-tiny"` or
+     *         `"vjs-layout-large"`) for the current breakpoint. Empty string if
+     *         there is no current breakpoint.
+     */
+    currentBreakpointClass() {
+      return BREAKPOINT_CLASSES[this.breakpoint_] || '';
+    }
+
+    /**
+     * An object that describes a single piece of media.
+     *
+     * Properties that are not part of this type description will be retained; so,
+     * this can be viewed as a generic metadata storage mechanism as well.
+     *
+     * @see      {@link https://wicg.github.io/mediasession/#the-mediametadata-interface}
+     * @typedef  {Object} Player~MediaObject
+     *
+     * @property {string} [album]
+     *           Unused, except if this object is passed to the `MediaSession`
+     *           API.
+     *
+     * @property {string} [artist]
+     *           Unused, except if this object is passed to the `MediaSession`
+     *           API.
+     *
+     * @property {Object[]} [artwork]
+     *           Unused, except if this object is passed to the `MediaSession`
+     *           API. If not specified, will be populated via the `poster`, if
+     *           available.
+     *
+     * @property {string} [poster]
+     *           URL to an image that will display before playback.
+     *
+     * @property {Tech~SourceObject|Tech~SourceObject[]|string} [src]
+     *           A single source object, an array of source objects, or a string
+     *           referencing a URL to a media source. It is _highly recommended_
+     *           that an object or array of objects is used here, so that source
+     *           selection algorithms can take the `type` into account.
+     *
+     * @property {string} [title]
+     *           Unused, except if this object is passed to the `MediaSession`
+     *           API.
+     *
+     * @property {Object[]} [textTracks]
+     *           An array of objects to be used to create text tracks, following
+     *           the {@link https://www.w3.org/TR/html50/embedded-content-0.html#the-track-element|native track element format}.
+     *           For ease of removal, these will be created as "remote" text
+     *           tracks and set to automatically clean up on source changes.
+     *
+     *           These objects may have properties like `src`, `kind`, `label`,
+     *           and `language`, see {@link Tech#createRemoteTextTrack}.
+     */
+
+    /**
+     * Populate the player using a {@link Player~MediaObject|MediaObject}.
+     *
+     * @param  {Player~MediaObject} media
+     *         A media object.
+     *
+     * @param  {Function} ready
+     *         A callback to be called when the player is ready.
+     */
+    loadMedia(media, ready) {
+      if (!media || typeof media !== 'object') {
+        return;
+      }
+      const crossOrigin = this.crossOrigin();
+      this.reset();
+
+      // Clone the media object so it cannot be mutated from outside.
+      this.cache_.media = merge$2(media);
+      const {
+        artist,
+        artwork,
+        description,
+        poster,
+        src,
+        textTracks,
+        title
+      } = this.cache_.media;
+
+      // If `artwork` is not given, create it using `poster`.
+      if (!artwork && poster) {
+        this.cache_.media.artwork = [{
+          src: poster,
+          type: getMimetype(poster)
+        }];
+      }
+      if (crossOrigin) {
+        this.crossOrigin(crossOrigin);
+      }
+      if (src) {
+        this.src(src);
+      }
+      if (poster) {
+        this.poster(poster);
+      }
+      if (Array.isArray(textTracks)) {
+        textTracks.forEach(tt => this.addRemoteTextTrack(tt, false));
+      }
+      if (this.titleBar) {
+        this.titleBar.update({
+          title,
+          description: description || artist || ''
+        });
+      }
+      this.ready(ready);
+    }
+
+    /**
+     * Get a clone of the current {@link Player~MediaObject} for this player.
+     *
+     * If the `loadMedia` method has not been used, will attempt to return a
+     * {@link Player~MediaObject} based on the current state of the player.
+     *
+     * @return {Player~MediaObject}
+     */
+    getMedia() {
+      if (!this.cache_.media) {
+        const poster = this.poster();
+        const src = this.currentSources();
+        const textTracks = Array.prototype.map.call(this.remoteTextTracks(), tt => ({
+          kind: tt.kind,
+          label: tt.label,
+          language: tt.language,
+          src: tt.src
+        }));
+        const media = {
+          src,
+          textTracks
+        };
+        if (poster) {
+          media.poster = poster;
+          media.artwork = [{
+            src: media.poster,
+            type: getMimetype(media.poster)
+          }];
+        }
+        return media;
+      }
+      return merge$2(this.cache_.media);
+    }
+
+    /**
+     * Gets tag settings
+     *
+     * @param {Element} tag
+     *        The player tag
+     *
+     * @return {Object}
+     *         An object containing all of the settings
+     *         for a player tag
+     */
+    static getTagSettings(tag) {
+      const baseOptions = {
+        sources: [],
+        tracks: []
+      };
+      const tagOptions = getAttributes(tag);
+      const dataSetup = tagOptions['data-setup'];
+      if (hasClass(tag, 'vjs-fill')) {
+        tagOptions.fill = true;
+      }
+      if (hasClass(tag, 'vjs-fluid')) {
+        tagOptions.fluid = true;
+      }
+
+      // Check if data-setup attr exists.
+      if (dataSetup !== null) {
+        // Parse options JSON
+        // If empty string, make it a parsable json object.
+        const [err, data] = tuple(dataSetup || '{}');
+        if (err) {
+          log$1.error(err);
+        }
+        Object.assign(tagOptions, data);
+      }
+      Object.assign(baseOptions, tagOptions);
+
+      // Get tag children settings
+      if (tag.hasChildNodes()) {
+        const children = tag.childNodes;
+        for (let i = 0, j = children.length; i < j; i++) {
+          const child = children[i];
+          // Change case needed: http://ejohn.org/blog/nodename-case-sensitivity/
+          const childName = child.nodeName.toLowerCase();
+          if (childName === 'source') {
+            baseOptions.sources.push(getAttributes(child));
+          } else if (childName === 'track') {
+            baseOptions.tracks.push(getAttributes(child));
+          }
+        }
+      }
+      return baseOptions;
+    }
+
+    /**
+     * Set debug mode to enable/disable logs at info level.
+     *
+     * @param {boolean} enabled
+     * @fires Player#debugon
+     * @fires Player#debugoff
+     * @return {boolean|undefined}
+     */
+    debug(enabled) {
+      if (enabled === undefined) {
+        return this.debugEnabled_;
+      }
+      if (enabled) {
+        this.trigger('debugon');
+        this.previousLogLevel_ = this.log.level;
+        this.log.level('debug');
+        this.debugEnabled_ = true;
+      } else {
+        this.trigger('debugoff');
+        this.log.level(this.previousLogLevel_);
+        this.previousLogLevel_ = undefined;
+        this.debugEnabled_ = false;
+      }
+    }
+
+    /**
+     * Set or get current playback rates.
+     * Takes an array and updates the playback rates menu with the new items.
+     * Pass in an empty array to hide the menu.
+     * Values other than arrays are ignored.
+     *
+     * @fires Player#playbackrateschange
+     * @param {number[]} [newRates]
+     *                   The new rates that the playback rates menu should update to.
+     *                   An empty array will hide the menu
+     * @return {number[]} When used as a getter will return the current playback rates
+     */
+    playbackRates(newRates) {
+      if (newRates === undefined) {
+        return this.cache_.playbackRates;
+      }
+
+      // ignore any value that isn't an array
+      if (!Array.isArray(newRates)) {
+        return;
+      }
+
+      // ignore any arrays that don't only contain numbers
+      if (!newRates.every(rate => typeof rate === 'number')) {
+        return;
+      }
+      this.cache_.playbackRates = newRates;
+
+      /**
+      * fires when the playback rates in a player are changed
+      *
+      * @event Player#playbackrateschange
+      * @type {Event}
+      */
+      this.trigger('playbackrateschange');
+    }
+  }
+
+  /**
+   * Get the {@link VideoTrackList}
+   *
+   * @link https://html.spec.whatwg.org/multipage/embedded-content.html#videotracklist
+   *
+   * @return {VideoTrackList}
+   *         the current video track list
+   *
+   * @method Player.prototype.videoTracks
+   */
+
+  /**
+   * Get the {@link AudioTrackList}
+   *
+   * @link https://html.spec.whatwg.org/multipage/embedded-content.html#audiotracklist
+   *
+   * @return {AudioTrackList}
+   *         the current audio track list
+   *
+   * @method Player.prototype.audioTracks
+   */
+
+  /**
+   * Get the {@link TextTrackList}
+   *
+   * @link http://www.w3.org/html/wg/drafts/html/master/embedded-content-0.html#dom-media-texttracks
+   *
+   * @return {TextTrackList}
+   *         the current text track list
+   *
+   * @method Player.prototype.textTracks
+   */
+
+  /**
+   * Get the remote {@link TextTrackList}
+   *
+   * @return {TextTrackList}
+   *         The current remote text track list
+   *
+   * @method Player.prototype.remoteTextTracks
+   */
+
+  /**
+   * Get the remote {@link HtmlTrackElementList} tracks.
+   *
+   * @return {HtmlTrackElementList}
+   *         The current remote text track element list
+   *
+   * @method Player.prototype.remoteTextTrackEls
+   */
+
+  ALL.names.forEach(function (name) {
+    const props = ALL[name];
+    Player.prototype[props.getterName] = function () {
+      if (this.tech_) {
+        return this.tech_[props.getterName]();
+      }
+
+      // if we have not yet loadTech_, we create {video,audio,text}Tracks_
+      // these will be passed to the tech during loading
+      this[props.privateName] = this[props.privateName] || new props.ListClass();
+      return this[props.privateName];
+    };
+  });
+
+  /**
+   * Get or set the `Player`'s crossorigin option. For the HTML5 player, this
+   * sets the `crossOrigin` property on the `<video>` tag to control the CORS
+   * behavior.
+   *
+   * @see [Video Element Attributes]{@link https://developer.mozilla.org/en-US/docs/Web/HTML/Element/video#attr-crossorigin}
+   *
+   * @param {string} [value]
+   *        The value to set the `Player`'s crossorigin to. If an argument is
+   *        given, must be one of `anonymous` or `use-credentials`.
+   *
+   * @return {string|undefined}
+   *         - The current crossorigin value of the `Player` when getting.
+   *         - undefined when setting
+   */
+  Player.prototype.crossorigin = Player.prototype.crossOrigin;
+
+  /**
+   * Global enumeration of players.
+   *
+   * The keys are the player IDs and the values are either the {@link Player}
+   * instance or `null` for disposed players.
+   *
+   * @type {Object}
+   */
+  Player.players = {};
+  const navigator = window.navigator;
+
+  /*
+   * Player instance options, surfaced using options
+   * options = Player.prototype.options_
+   * Make changes in options, not here.
+   *
+   * @type {Object}
+   * @private
+   */
+  Player.prototype.options_ = {
+    // Default order of fallback technology
+    techOrder: Tech.defaultTechOrder_,
+    html5: {},
+    // enable sourceset by default
+    enableSourceset: true,
+    // default inactivity timeout
+    inactivityTimeout: 2000,
+    // default playback rates
+    playbackRates: [],
+    // Add playback rate selection by adding rates
+    // 'playbackRates': [0.5, 1, 1.5, 2],
+    liveui: false,
+    // Included control sets
+    children: ['mediaLoader', 'posterImage', 'titleBar', 'textTrackDisplay', 'loadingSpinner', 'bigPlayButton', 'liveTracker', 'controlBar', 'errorDisplay', 'textTrackSettings', 'resizeManager'],
+    language: navigator && (navigator.languages && navigator.languages[0] || navigator.userLanguage || navigator.language) || 'en',
+    // locales and their language translations
+    languages: {},
+    // Default message to show when a video cannot be played.
+    notSupportedMessage: 'No compatible source was found for this media.',
+    normalizeAutoplay: false,
+    fullscreen: {
+      options: {
+        navigationUI: 'hide'
+      }
+    },
+    breakpoints: {},
+    responsive: false,
+    audioOnlyMode: false,
+    audioPosterMode: false,
+    // Default smooth seeking to false
+    enableSmoothSeeking: false
+  };
+  TECH_EVENTS_RETRIGGER.forEach(function (event) {
+    Player.prototype[`handleTech${toTitleCase$1(event)}_`] = function () {
+      return this.trigger(event);
+    };
+  });
+
+  /**
+   * Fired when the player has initial duration and dimension information
+   *
+   * @event Player#loadedmetadata
+   * @type {Event}
+   */
+
+  /**
+   * Fired when the player has downloaded data at the current playback position
+   *
+   * @event Player#loadeddata
+   * @type {Event}
+   */
+
+  /**
+   * Fired when the current playback position has changed *
+   * During playback this is fired every 15-250 milliseconds, depending on the
+   * playback technology in use.
+   *
+   * @event Player#timeupdate
+   * @type {Event}
+   */
+
+  /**
+   * Fired when the volume changes
+   *
+   * @event Player#volumechange
+   * @type {Event}
+   */
+
+  /**
+   * Reports whether or not a player has a plugin available.
+   *
+   * This does not report whether or not the plugin has ever been initialized
+   * on this player. For that, [usingPlugin]{@link Player#usingPlugin}.
+   *
+   * @method Player#hasPlugin
+   * @param  {string}  name
+   *         The name of a plugin.
+   *
+   * @return {boolean}
+   *         Whether or not this player has the requested plugin available.
+   */
+
+  /**
+   * Reports whether or not a player is using a plugin by name.
+   *
+   * For basic plugins, this only reports whether the plugin has _ever_ been
+   * initialized on this player.
+   *
+   * @method Player#usingPlugin
+   * @param  {string} name
+   *         The name of a plugin.
+   *
+   * @return {boolean}
+   *         Whether or not this player is using the requested plugin.
+   */
+
+  Component$1.registerComponent('Player', Player);
+
+  /**
+   * @file plugin.js
+   */
+
+  /**
+   * The base plugin name.
+   *
+   * @private
+   * @constant
+   * @type {string}
+   */
+  const BASE_PLUGIN_NAME = 'plugin';
+
+  /**
+   * The key on which a player's active plugins cache is stored.
+   *
+   * @private
+   * @constant
+   * @type     {string}
+   */
+  const PLUGIN_CACHE_KEY = 'activePlugins_';
+
+  /**
+   * Stores registered plugins in a private space.
+   *
+   * @private
+   * @type    {Object}
+   */
+  const pluginStorage = {};
+
+  /**
+   * Reports whether or not a plugin has been registered.
+   *
+   * @private
+   * @param   {string} name
+   *          The name of a plugin.
+   *
+   * @return {boolean}
+   *          Whether or not the plugin has been registered.
+   */
+  const pluginExists = name => pluginStorage.hasOwnProperty(name);
+
+  /**
+   * Get a single registered plugin by name.
+   *
+   * @private
+   * @param   {string} name
+   *          The name of a plugin.
+   *
+   * @return {typeof Plugin|Function|undefined}
+   *          The plugin (or undefined).
+   */
+  const getPlugin = name => pluginExists(name) ? pluginStorage[name] : undefined;
+
+  /**
+   * Marks a plugin as "active" on a player.
+   *
+   * Also, ensures that the player has an object for tracking active plugins.
+   *
+   * @private
+   * @param   {Player} player
+   *          A Video.js player instance.
+   *
+   * @param   {string} name
+   *          The name of a plugin.
+   */
+  const markPluginAsActive = (player, name) => {
+    player[PLUGIN_CACHE_KEY] = player[PLUGIN_CACHE_KEY] || {};
+    player[PLUGIN_CACHE_KEY][name] = true;
+  };
+
+  /**
+   * Triggers a pair of plugin setup events.
+   *
+   * @private
+   * @param  {Player} player
+   *         A Video.js player instance.
+   *
+   * @param  {PluginEventHash} hash
+   *         A plugin event hash.
+   *
+   * @param  {boolean} [before]
+   *         If true, prefixes the event name with "before". In other words,
+   *         use this to trigger "beforepluginsetup" instead of "pluginsetup".
+   */
+  const triggerSetupEvent = (player, hash, before) => {
+    const eventName = (before ? 'before' : '') + 'pluginsetup';
+    player.trigger(eventName, hash);
+    player.trigger(eventName + ':' + hash.name, hash);
+  };
+
+  /**
+   * Takes a basic plugin function and returns a wrapper function which marks
+   * on the player that the plugin has been activated.
+   *
+   * @private
+   * @param   {string} name
+   *          The name of the plugin.
+   *
+   * @param   {Function} plugin
+   *          The basic plugin.
+   *
+   * @return {Function}
+   *          A wrapper function for the given plugin.
+   */
+  const createBasicPlugin = function (name, plugin) {
+    const basicPluginWrapper = function () {
+      // We trigger the "beforepluginsetup" and "pluginsetup" events on the player
+      // regardless, but we want the hash to be consistent with the hash provided
+      // for advanced plugins.
+      //
+      // The only potentially counter-intuitive thing here is the `instance` in
+      // the "pluginsetup" event is the value returned by the `plugin` function.
+      triggerSetupEvent(this, {
+        name,
+        plugin,
+        instance: null
+      }, true);
+      const instance = plugin.apply(this, arguments);
+      markPluginAsActive(this, name);
+      triggerSetupEvent(this, {
+        name,
+        plugin,
+        instance
+      });
+      return instance;
+    };
+    Object.keys(plugin).forEach(function (prop) {
+      basicPluginWrapper[prop] = plugin[prop];
+    });
+    return basicPluginWrapper;
+  };
+
+  /**
+   * Takes a plugin sub-class and returns a factory function for generating
+   * instances of it.
+   *
+   * This factory function will replace itself with an instance of the requested
+   * sub-class of Plugin.
+   *
+   * @private
+   * @param   {string} name
+   *          The name of the plugin.
+   *
+   * @param   {Plugin} PluginSubClass
+   *          The advanced plugin.
+   *
+   * @return {Function}
+   */
+  const createPluginFactory = (name, PluginSubClass) => {
+    // Add a `name` property to the plugin prototype so that each plugin can
+    // refer to itself by name.
+    PluginSubClass.prototype.name = name;
+    return function (...args) {
+      triggerSetupEvent(this, {
+        name,
+        plugin: PluginSubClass,
+        instance: null
+      }, true);
+      const instance = new PluginSubClass(...[this, ...args]);
+
+      // The plugin is replaced by a function that returns the current instance.
+      this[name] = () => instance;
+      triggerSetupEvent(this, instance.getEventHash());
+      return instance;
+    };
+  };
+
+  /**
+   * Parent class for all advanced plugins.
+   *
+   * @mixes   module:evented~EventedMixin
+   * @mixes   module:stateful~StatefulMixin
+   * @fires   Player#beforepluginsetup
+   * @fires   Player#beforepluginsetup:$name
+   * @fires   Player#pluginsetup
+   * @fires   Player#pluginsetup:$name
+   * @listens Player#dispose
+   * @throws  {Error}
+   *          If attempting to instantiate the base {@link Plugin} class
+   *          directly instead of via a sub-class.
+   */
+  class Plugin {
+    /**
+     * Creates an instance of this class.
+     *
+     * Sub-classes should call `super` to ensure plugins are properly initialized.
+     *
+     * @param {Player} player
+     *        A Video.js player instance.
+     */
+    constructor(player) {
+      if (this.constructor === Plugin) {
+        throw new Error('Plugin must be sub-classed; not directly instantiated.');
+      }
+      this.player = player;
+      if (!this.log) {
+        this.log = this.player.log.createLogger(this.name);
+      }
+
+      // Make this object evented, but remove the added `trigger` method so we
+      // use the prototype version instead.
+      evented(this);
+      delete this.trigger;
+      stateful(this, this.constructor.defaultState);
+      markPluginAsActive(player, this.name);
+
+      // Auto-bind the dispose method so we can use it as a listener and unbind
+      // it later easily.
+      this.dispose = this.dispose.bind(this);
+
+      // If the player is disposed, dispose the plugin.
+      player.on('dispose', this.dispose);
+    }
+
+    /**
+     * Get the version of the plugin that was set on <pluginName>.VERSION
+     */
+    version() {
+      return this.constructor.VERSION;
+    }
+
+    /**
+     * Each event triggered by plugins includes a hash of additional data with
+     * conventional properties.
+     *
+     * This returns that object or mutates an existing hash.
+     *
+     * @param   {Object} [hash={}]
+     *          An object to be used as event an event hash.
+     *
+     * @return {PluginEventHash}
+     *          An event hash object with provided properties mixed-in.
+     */
+    getEventHash(hash = {}) {
+      hash.name = this.name;
+      hash.plugin = this.constructor;
+      hash.instance = this;
+      return hash;
+    }
+
+    /**
+     * Triggers an event on the plugin object and overrides
+     * {@link module:evented~EventedMixin.trigger|EventedMixin.trigger}.
+     *
+     * @param   {string|Object} event
+     *          An event type or an object with a type property.
+     *
+     * @param   {Object} [hash={}]
+     *          Additional data hash to merge with a
+     *          {@link PluginEventHash|PluginEventHash}.
+     *
+     * @return {boolean}
+     *          Whether or not default was prevented.
+     */
+    trigger(event, hash = {}) {
+      return trigger(this.eventBusEl_, event, this.getEventHash(hash));
+    }
+
+    /**
+     * Handles "statechanged" events on the plugin. No-op by default, override by
+     * subclassing.
+     *
+     * @abstract
+     * @param    {Event} e
+     *           An event object provided by a "statechanged" event.
+     *
+     * @param    {Object} e.changes
+     *           An object describing changes that occurred with the "statechanged"
+     *           event.
+     */
+    handleStateChanged(e) {}
+
+    /**
+     * Disposes a plugin.
+     *
+     * Subclasses can override this if they want, but for the sake of safety,
+     * it's probably best to subscribe the "dispose" event.
+     *
+     * @fires Plugin#dispose
+     */
+    dispose() {
+      const {
+        name,
+        player
+      } = this;
+
+      /**
+       * Signals that a advanced plugin is about to be disposed.
+       *
+       * @event Plugin#dispose
+       * @type  {Event}
+       */
+      this.trigger('dispose');
+      this.off();
+      player.off('dispose', this.dispose);
+
+      // Eliminate any possible sources of leaking memory by clearing up
+      // references between the player and the plugin instance and nulling out
+      // the plugin's state and replacing methods with a function that throws.
+      player[PLUGIN_CACHE_KEY][name] = false;
+      this.player = this.state = null;
+
+      // Finally, replace the plugin name on the player with a new factory
+      // function, so that the plugin is ready to be set up again.
+      player[name] = createPluginFactory(name, pluginStorage[name]);
+    }
+
+    /**
+     * Determines if a plugin is a basic plugin (i.e. not a sub-class of `Plugin`).
+     *
+     * @param   {string|Function} plugin
+     *          If a string, matches the name of a plugin. If a function, will be
+     *          tested directly.
+     *
+     * @return {boolean}
+     *          Whether or not a plugin is a basic plugin.
+     */
+    static isBasic(plugin) {
+      const p = typeof plugin === 'string' ? getPlugin(plugin) : plugin;
+      return typeof p === 'function' && !Plugin.prototype.isPrototypeOf(p.prototype);
+    }
+
+    /**
+     * Register a Video.js plugin.
+     *
+     * @param   {string} name
+     *          The name of the plugin to be registered. Must be a string and
+     *          must not match an existing plugin or a method on the `Player`
+     *          prototype.
+     *
+     * @param   {typeof Plugin|Function} plugin
+     *          A sub-class of `Plugin` or a function for basic plugins.
+     *
+     * @return {typeof Plugin|Function}
+     *          For advanced plugins, a factory function for that plugin. For
+     *          basic plugins, a wrapper function that initializes the plugin.
+     */
+    static registerPlugin(name, plugin) {
+      if (typeof name !== 'string') {
+        throw new Error(`Illegal plugin name, "${name}", must be a string, was ${typeof name}.`);
+      }
+      if (pluginExists(name)) {
+        log$1.warn(`A plugin named "${name}" already exists. You may want to avoid re-registering plugins!`);
+      } else if (Player.prototype.hasOwnProperty(name)) {
+        throw new Error(`Illegal plugin name, "${name}", cannot share a name with an existing player method!`);
+      }
+      if (typeof plugin !== 'function') {
+        throw new Error(`Illegal plugin for "${name}", must be a function, was ${typeof plugin}.`);
+      }
+      pluginStorage[name] = plugin;
+
+      // Add a player prototype method for all sub-classed plugins (but not for
+      // the base Plugin class).
+      if (name !== BASE_PLUGIN_NAME) {
+        if (Plugin.isBasic(plugin)) {
+          Player.prototype[name] = createBasicPlugin(name, plugin);
+        } else {
+          Player.prototype[name] = createPluginFactory(name, plugin);
+        }
+      }
+      return plugin;
+    }
+
+    /**
+     * De-register a Video.js plugin.
+     *
+     * @param  {string} name
+     *         The name of the plugin to be de-registered. Must be a string that
+     *         matches an existing plugin.
+     *
+     * @throws {Error}
+     *         If an attempt is made to de-register the base plugin.
+     */
+    static deregisterPlugin(name) {
+      if (name === BASE_PLUGIN_NAME) {
+        throw new Error('Cannot de-register base plugin.');
+      }
+      if (pluginExists(name)) {
+        delete pluginStorage[name];
+        delete Player.prototype[name];
+      }
+    }
+
+    /**
+     * Gets an object containing multiple Video.js plugins.
+     *
+     * @param   {Array} [names]
+     *          If provided, should be an array of plugin names. Defaults to _all_
+     *          plugin names.
+     *
+     * @return {Object|undefined}
+     *          An object containing plugin(s) associated with their name(s) or
+     *          `undefined` if no matching plugins exist).
+     */
+    static getPlugins(names = Object.keys(pluginStorage)) {
+      let result;
+      names.forEach(name => {
+        const plugin = getPlugin(name);
+        if (plugin) {
+          result = result || {};
+          result[name] = plugin;
+        }
+      });
+      return result;
+    }
+
+    /**
+     * Gets a plugin's version, if available
+     *
+     * @param   {string} name
+     *          The name of a plugin.
+     *
+     * @return {string}
+     *          The plugin's version or an empty string.
+     */
+    static getPluginVersion(name) {
+      const plugin = getPlugin(name);
+      return plugin && plugin.VERSION || '';
+    }
+  }
+
+  /**
+   * Gets a plugin by name if it exists.
+   *
+   * @static
+   * @method   getPlugin
+   * @memberOf Plugin
+   * @param    {string} name
+   *           The name of a plugin.
+   *
+   * @returns  {typeof Plugin|Function|undefined}
+   *           The plugin (or `undefined`).
+   */
+  Plugin.getPlugin = getPlugin;
+
+  /**
+   * The name of the base plugin class as it is registered.
+   *
+   * @type {string}
+   */
+  Plugin.BASE_PLUGIN_NAME = BASE_PLUGIN_NAME;
+  Plugin.registerPlugin(BASE_PLUGIN_NAME, Plugin);
+
+  /**
+   * Documented in player.js
+   *
+   * @ignore
+   */
+  Player.prototype.usingPlugin = function (name) {
+    return !!this[PLUGIN_CACHE_KEY] && this[PLUGIN_CACHE_KEY][name] === true;
+  };
+
+  /**
+   * Documented in player.js
+   *
+   * @ignore
+   */
+  Player.prototype.hasPlugin = function (name) {
+    return !!pluginExists(name);
+  };
+
+  /**
+   * Signals that a plugin is about to be set up on a player.
+   *
+   * @event    Player#beforepluginsetup
+   * @type     {PluginEventHash}
+   */
+
+  /**
+   * Signals that a plugin is about to be set up on a player - by name. The name
+   * is the name of the plugin.
+   *
+   * @event    Player#beforepluginsetup:$name
+   * @type     {PluginEventHash}
+   */
+
+  /**
+   * Signals that a plugin has just been set up on a player.
+   *
+   * @event    Player#pluginsetup
+   * @type     {PluginEventHash}
+   */
+
+  /**
+   * Signals that a plugin has just been set up on a player - by name. The name
+   * is the name of the plugin.
+   *
+   * @event    Player#pluginsetup:$name
+   * @type     {PluginEventHash}
+   */
+
+  /**
+   * @typedef  {Object} PluginEventHash
+   *
+   * @property {string} instance
+   *           For basic plugins, the return value of the plugin function. For
+   *           advanced plugins, the plugin instance on which the event is fired.
+   *
+   * @property {string} name
+   *           The name of the plugin.
+   *
+   * @property {string} plugin
+   *           For basic plugins, the plugin function. For advanced plugins, the
+   *           plugin class/constructor.
+   */
+
+  /**
+   * @file deprecate.js
+   * @module deprecate
+   */
+
+  /**
+   * Decorate a function with a deprecation message the first time it is called.
+   *
+   * @param  {string}   message
+   *         A deprecation message to log the first time the returned function
+   *         is called.
+   *
+   * @param  {Function} fn
+   *         The function to be deprecated.
+   *
+   * @return {Function}
+   *         A wrapper function that will log a deprecation warning the first
+   *         time it is called. The return value will be the return value of
+   *         the wrapped function.
+   */
+  function deprecate(message, fn) {
+    let warned = false;
+    return function (...args) {
+      if (!warned) {
+        log$1.warn(message);
+      }
+      warned = true;
+      return fn.apply(this, args);
+    };
+  }
+
+  /**
+   * Internal function used to mark a function as deprecated in the next major
+   * version with consistent messaging.
+   *
+   * @param  {number}   major   The major version where it will be removed
+   * @param  {string}   oldName The old function name
+   * @param  {string}   newName The new function name
+   * @param  {Function} fn      The function to deprecate
+   * @return {Function}         The decorated function
+   */
+  function deprecateForMajor(major, oldName, newName, fn) {
+    return deprecate(`${oldName} is deprecated and will be removed in ${major}.0; please use ${newName} instead.`, fn);
+  }
+
+  var VjsErrors = {
+    UnsupportedSidxContainer: 'unsupported-sidx-container-error',
+    DashManifestSidxParsingError: 'dash-manifest-sidx-parsing-error',
+    HlsPlaylistRequestError: 'hls-playlist-request-error',
+    SegmentUnsupportedMediaFormat: 'segment-unsupported-media-format-error',
+    UnsupportedMediaInitialization: 'unsupported-media-initialization-error',
+    SegmentSwitchError: 'segment-switch-error',
+    SegmentExceedsSourceBufferQuota: 'segment-exceeds-source-buffer-quota-error',
+    SegmentAppendError: 'segment-append-error',
+    VttLoadError: 'vtt-load-error',
+    VttCueParsingError: 'vtt-cue-parsing-error',
+    // Errors used in contrib-ads:
+    AdsBeforePrerollError: 'ads-before-preroll-error',
+    AdsPrerollError: 'ads-preroll-error',
+    AdsMidrollError: 'ads-midroll-error',
+    AdsPostrollError: 'ads-postroll-error',
+    AdsMacroReplacementFailed: 'ads-macro-replacement-failed',
+    AdsResumeContentFailed: 'ads-resume-content-failed',
+    // Errors used in contrib-eme:
+    EMEFailedToRequestMediaKeySystemAccess: 'eme-failed-request-media-key-system-access',
+    EMEFailedToCreateMediaKeys: 'eme-failed-create-media-keys',
+    EMEFailedToAttachMediaKeysToVideoElement: 'eme-failed-attach-media-keys-to-video',
+    EMEFailedToCreateMediaKeySession: 'eme-failed-create-media-key-session',
+    EMEFailedToSetServerCertificate: 'eme-failed-set-server-certificate',
+    EMEFailedToGenerateLicenseRequest: 'eme-failed-generate-license-request',
+    EMEFailedToUpdateSessionWithReceivedLicenseKeys: 'eme-failed-update-session',
+    EMEFailedToCloseSession: 'eme-failed-close-session',
+    EMEFailedToRemoveKeysFromSession: 'eme-failed-remove-keys',
+    EMEFailedToLoadSessionBySessionId: 'eme-failed-load-session'
+  };
+
+  /**
+   * @file video.js
+   * @module videojs
+   */
+
+  /**
+   * Normalize an `id` value by trimming off a leading `#`
+   *
+   * @private
+   * @param   {string} id
+   *          A string, maybe with a leading `#`.
+   *
+   * @return {string}
+   *          The string, without any leading `#`.
+   */
+  const normalizeId = id => id.indexOf('#') === 0 ? id.slice(1) : id;
+
+  /**
+   * A callback that is called when a component is ready. Does not have any
+   * parameters and any callback value will be ignored. See: {@link Component~ReadyCallback}
+   *
+   * @callback ReadyCallback
+   */
+
+  /**
+   * The `videojs()` function doubles as the main function for users to create a
+   * {@link Player} instance as well as the main library namespace.
+   *
+   * It can also be used as a getter for a pre-existing {@link Player} instance.
+   * However, we _strongly_ recommend using `videojs.getPlayer()` for this
+   * purpose because it avoids any potential for unintended initialization.
+   *
+   * Due to [limitations](https://github.com/jsdoc3/jsdoc/issues/955#issuecomment-313829149)
+   * of our JSDoc template, we cannot properly document this as both a function
+   * and a namespace, so its function signature is documented here.
+   *
+   * #### Arguments
+   * ##### id
+   * string|Element, **required**
+   *
+   * Video element or video element ID.
+   *
+   * ##### options
+   * Object, optional
+   *
+   * Options object for providing settings.
+   * See: [Options Guide](https://docs.videojs.com/tutorial-options.html).
+   *
+   * ##### ready
+   * {@link Component~ReadyCallback}, optional
+   *
+   * A function to be called when the {@link Player} and {@link Tech} are ready.
+   *
+   * #### Return Value
+   *
+   * The `videojs()` function returns a {@link Player} instance.
+   *
+   * @namespace
+   *
+   * @borrows AudioTrack as AudioTrack
+   * @borrows Component.getComponent as getComponent
+   * @borrows module:events.on as on
+   * @borrows module:events.one as one
+   * @borrows module:events.off as off
+   * @borrows module:events.trigger as trigger
+   * @borrows EventTarget as EventTarget
+   * @borrows module:middleware.use as use
+   * @borrows Player.players as players
+   * @borrows Plugin.registerPlugin as registerPlugin
+   * @borrows Plugin.deregisterPlugin as deregisterPlugin
+   * @borrows Plugin.getPlugins as getPlugins
+   * @borrows Plugin.getPlugin as getPlugin
+   * @borrows Plugin.getPluginVersion as getPluginVersion
+   * @borrows Tech.getTech as getTech
+   * @borrows Tech.registerTech as registerTech
+   * @borrows TextTrack as TextTrack
+   * @borrows VideoTrack as VideoTrack
+   *
+   * @param  {string|Element} id
+   *         Video element or video element ID.
+   *
+   * @param  {Object} [options]
+   *         Options object for providing settings.
+   *         See: [Options Guide](https://docs.videojs.com/tutorial-options.html).
+   *
+   * @param  {ReadyCallback} [ready]
+   *         A function to be called when the {@link Player} and {@link Tech} are
+   *         ready.
+   *
+   * @return {Player}
+   *         The `videojs()` function returns a {@link Player|Player} instance.
+   */
+  function videojs(id, options, ready) {
+    let player = videojs.getPlayer(id);
+    if (player) {
+      if (options) {
+        log$1.warn(`Player "${id}" is already initialised. Options will not be applied.`);
+      }
+      if (ready) {
+        player.ready(ready);
+      }
+      return player;
+    }
+    const el = typeof id === 'string' ? $('#' + normalizeId(id)) : id;
+    if (!isEl(el)) {
+      throw new TypeError('The element or ID supplied is not valid. (videojs)');
+    }
+
+    // document.body.contains(el) will only check if el is contained within that one document.
+    // This causes problems for elements in iframes.
+    // Instead, use the element's ownerDocument instead of the global document.
+    // This will make sure that the element is indeed in the dom of that document.
+    // Additionally, check that the document in question has a default view.
+    // If the document is no longer attached to the dom, the defaultView of the document will be null.
+    // If element is inside Shadow DOM (e.g. is part of a Custom element), ownerDocument.body
+    // always returns false. Instead, use the Shadow DOM root.
+    const inShadowDom = 'getRootNode' in el ? el.getRootNode() instanceof window.ShadowRoot : false;
+    const rootNode = inShadowDom ? el.getRootNode() : el.ownerDocument.body;
+    if (!el.ownerDocument.defaultView || !rootNode.contains(el)) {
+      log$1.warn('The element supplied is not included in the DOM');
+    }
+    options = options || {};
+
+    // Store a copy of the el before modification, if it is to be restored in destroy()
+    // If div ingest, store the parent div
+    if (options.restoreEl === true) {
+      options.restoreEl = (el.parentNode && el.parentNode.hasAttribute('data-vjs-player') ? el.parentNode : el).cloneNode(true);
+    }
+    hooks('beforesetup').forEach(hookFunction => {
+      const opts = hookFunction(el, merge$2(options));
+      if (!isObject$1(opts) || Array.isArray(opts)) {
+        log$1.error('please return an object in beforesetup hooks');
+        return;
+      }
+      options = merge$2(options, opts);
+    });
+
+    // We get the current "Player" component here in case an integration has
+    // replaced it with a custom player.
+    const PlayerComponent = Component$1.getComponent('Player');
+    player = new PlayerComponent(el, options, ready);
+    hooks('setup').forEach(hookFunction => hookFunction(player));
+    return player;
+  }
+  videojs.hooks_ = hooks_;
+  videojs.hooks = hooks;
+  videojs.hook = hook;
+  videojs.hookOnce = hookOnce;
+  videojs.removeHook = removeHook;
+
+  // Add default styles
+  if (window.VIDEOJS_NO_DYNAMIC_STYLE !== true && isReal()) {
+    let style = $('.vjs-styles-defaults');
+    if (!style) {
+      style = createStyleElement('vjs-styles-defaults');
+      const head = $('head');
+      if (head) {
+        head.insertBefore(style, head.firstChild);
+      }
+      setTextContent(style, `
+      .video-js {
+        width: 300px;
+        height: 150px;
+      }
+
+      .vjs-fluid:not(.vjs-audio-only-mode) {
+        padding-top: 56.25%
+      }
+    `);
+    }
+  }
+
+  // Run Auto-load players
+  // You have to wait at least once in case this script is loaded after your
+  // video in the DOM (weird behavior only with minified version)
+  autoSetupTimeout(1, videojs);
+
+  /**
+   * Current Video.js version. Follows [semantic versioning](https://semver.org/).
+   *
+   * @type {string}
+   */
+  videojs.VERSION = version$5;
+
+  /**
+   * The global options object. These are the settings that take effect
+   * if no overrides are specified when the player is created.
+   *
+   * @type {Object}
+   */
+  videojs.options = Player.prototype.options_;
+
+  /**
+   * Get an object with the currently created players, keyed by player ID
+   *
+   * @return {Object}
+   *         The created players
+   */
+  videojs.getPlayers = () => Player.players;
+
+  /**
+   * Get a single player based on an ID or DOM element.
+   *
+   * This is useful if you want to check if an element or ID has an associated
+   * Video.js player, but not create one if it doesn't.
+   *
+   * @param   {string|Element} id
+   *          An HTML element - `<video>`, `<audio>`, or `<video-js>` -
+   *          or a string matching the `id` of such an element.
+   *
+   * @return {Player|undefined}
+   *          A player instance or `undefined` if there is no player instance
+   *          matching the argument.
+   */
+  videojs.getPlayer = id => {
+    const players = Player.players;
+    let tag;
+    if (typeof id === 'string') {
+      const nId = normalizeId(id);
+      const player = players[nId];
+      if (player) {
+        return player;
+      }
+      tag = $('#' + nId);
+    } else {
+      tag = id;
+    }
+    if (isEl(tag)) {
+      const {
+        player,
+        playerId
+      } = tag;
+
+      // Element may have a `player` property referring to an already created
+      // player instance. If so, return that.
+      if (player || players[playerId]) {
+        return player || players[playerId];
+      }
+    }
+  };
+
+  /**
+   * Returns an array of all current players.
+   *
+   * @return {Array}
+   *         An array of all players. The array will be in the order that
+   *         `Object.keys` provides, which could potentially vary between
+   *         JavaScript engines.
+   *
+   */
+  videojs.getAllPlayers = () =>
+  // Disposed players leave a key with a `null` value, so we need to make sure
+  // we filter those out.
+  Object.keys(Player.players).map(k => Player.players[k]).filter(Boolean);
+  videojs.players = Player.players;
+  videojs.getComponent = Component$1.getComponent;
+
+  /**
+   * Register a component so it can referred to by name. Used when adding to other
+   * components, either through addChild `component.addChild('myComponent')` or through
+   * default children options  `{ children: ['myComponent'] }`.
+   *
+   * > NOTE: You could also just initialize the component before adding.
+   * `component.addChild(new MyComponent());`
+   *
+   * @param {string} name
+   *        The class name of the component
+   *
+   * @param {typeof Component} comp
+   *        The component class
+   *
+   * @return {typeof Component}
+   *         The newly registered component
+   */
+  videojs.registerComponent = (name, comp) => {
+    if (Tech.isTech(comp)) {
+      log$1.warn(`The ${name} tech was registered as a component. It should instead be registered using videojs.registerTech(name, tech)`);
+    }
+    return Component$1.registerComponent.call(Component$1, name, comp);
+  };
+  videojs.getTech = Tech.getTech;
+  videojs.registerTech = Tech.registerTech;
+  videojs.use = use;
+
+  /**
+   * An object that can be returned by a middleware to signify
+   * that the middleware is being terminated.
+   *
+   * @type {object}
+   * @property {object} middleware.TERMINATOR
+   */
+  Object.defineProperty(videojs, 'middleware', {
+    value: {},
+    writeable: false,
+    enumerable: true
+  });
+  Object.defineProperty(videojs.middleware, 'TERMINATOR', {
+    value: TERMINATOR,
+    writeable: false,
+    enumerable: true
+  });
+
+  /**
+   * A reference to the {@link module:browser|browser utility module} as an object.
+   *
+   * @type {Object}
+   * @see  {@link module:browser|browser}
+   */
+  videojs.browser = browser;
+
+  /**
+   * A reference to the {@link module:obj|obj utility module} as an object.
+   *
+   * @type {Object}
+   * @see  {@link module:obj|obj}
+   */
+  videojs.obj = Obj;
+
+  /**
+   * Deprecated reference to the {@link module:obj.merge|merge function}
+   *
+   * @type {Function}
+   * @see {@link module:obj.merge|merge}
+   * @deprecated Deprecated and will be removed in 9.0. Please use videojs.obj.merge instead.
+   */
+  videojs.mergeOptions = deprecateForMajor(9, 'videojs.mergeOptions', 'videojs.obj.merge', merge$2);
+
+  /**
+   * Deprecated reference to the {@link module:obj.defineLazyProperty|defineLazyProperty function}
+   *
+   * @type {Function}
+   * @see {@link module:obj.defineLazyProperty|defineLazyProperty}
+   * @deprecated Deprecated and will be removed in 9.0. Please use videojs.obj.defineLazyProperty instead.
+   */
+  videojs.defineLazyProperty = deprecateForMajor(9, 'videojs.defineLazyProperty', 'videojs.obj.defineLazyProperty', defineLazyProperty);
+
+  /**
+   * Deprecated reference to the {@link module:fn.bind_|fn.bind_ function}
+   *
+   * @type {Function}
+   * @see {@link module:fn.bind_|fn.bind_}
+   * @deprecated Deprecated and will be removed in 9.0. Please use native Function.prototype.bind instead.
+   */
+  videojs.bind = deprecateForMajor(9, 'videojs.bind', 'native Function.prototype.bind', bind_);
+  videojs.registerPlugin = Plugin.registerPlugin;
+  videojs.deregisterPlugin = Plugin.deregisterPlugin;
+
+  /**
+   * Deprecated method to register a plugin with Video.js
+   *
+   * @deprecated Deprecated and will be removed in 9.0. Use videojs.registerPlugin() instead.
+   *
+   * @param {string} name
+   *        The plugin name
+  *
+   * @param {typeof Plugin|Function} plugin
+   *         The plugin sub-class or function
+   *
+   * @return {typeof Plugin|Function}
+   */
+  videojs.plugin = (name, plugin) => {
+    log$1.warn('videojs.plugin() is deprecated; use videojs.registerPlugin() instead');
+    return Plugin.registerPlugin(name, plugin);
+  };
+  videojs.getPlugins = Plugin.getPlugins;
+  videojs.getPlugin = Plugin.getPlugin;
+  videojs.getPluginVersion = Plugin.getPluginVersion;
+
+  /**
+   * Adding languages so that they're available to all players.
+   * Example: `videojs.addLanguage('es', { 'Hello': 'Hola' });`
+   *
+   * @param {string} code
+   *        The language code or dictionary property
+   *
+   * @param {Object} data
+   *        The data values to be translated
+   *
+   * @return {Object}
+   *         The resulting language dictionary object
+   */
+  videojs.addLanguage = function (code, data) {
+    code = ('' + code).toLowerCase();
+    videojs.options.languages = merge$2(videojs.options.languages, {
+      [code]: data
+    });
+    return videojs.options.languages[code];
+  };
+
+  /**
+   * A reference to the {@link module:log|log utility module} as an object.
+   *
+   * @type {Function}
+   * @see  {@link module:log|log}
+   */
+  videojs.log = log$1;
+  videojs.createLogger = createLogger;
+
+  /**
+   * A reference to the {@link module:time|time utility module} as an object.
+   *
+   * @type {Object}
+   * @see {@link module:time|time}
+   */
+  videojs.time = Time;
+
+  /**
+   * Deprecated reference to the {@link module:time.createTimeRanges|createTimeRanges function}
+   *
+   * @type {Function}
+   * @see {@link module:time.createTimeRanges|createTimeRanges}
+   * @deprecated Deprecated and will be removed in 9.0. Please use videojs.time.createTimeRanges instead.
+   */
+  videojs.createTimeRange = deprecateForMajor(9, 'videojs.createTimeRange', 'videojs.time.createTimeRanges', createTimeRanges$1);
+
+  /**
+   * Deprecated reference to the {@link module:time.createTimeRanges|createTimeRanges function}
+   *
+   * @type {Function}
+   * @see {@link module:time.createTimeRanges|createTimeRanges}
+   * @deprecated Deprecated and will be removed in 9.0. Please use videojs.time.createTimeRanges instead.
+   */
+  videojs.createTimeRanges = deprecateForMajor(9, 'videojs.createTimeRanges', 'videojs.time.createTimeRanges', createTimeRanges$1);
+
+  /**
+   * Deprecated reference to the {@link module:time.formatTime|formatTime function}
+   *
+   * @type {Function}
+   * @see {@link module:time.formatTime|formatTime}
+   * @deprecated Deprecated and will be removed in 9.0. Please use videojs.time.format instead.
+   */
+  videojs.formatTime = deprecateForMajor(9, 'videojs.formatTime', 'videojs.time.formatTime', formatTime);
+
+  /**
+   * Deprecated reference to the {@link module:time.setFormatTime|setFormatTime function}
+   *
+   * @type {Function}
+   * @see {@link module:time.setFormatTime|setFormatTime}
+   * @deprecated Deprecated and will be removed in 9.0. Please use videojs.time.setFormat instead.
+   */
+  videojs.setFormatTime = deprecateForMajor(9, 'videojs.setFormatTime', 'videojs.time.setFormatTime', setFormatTime);
+
+  /**
+   * Deprecated reference to the {@link module:time.resetFormatTime|resetFormatTime function}
+   *
+   * @type {Function}
+   * @see {@link module:time.resetFormatTime|resetFormatTime}
+   * @deprecated Deprecated and will be removed in 9.0. Please use videojs.time.resetFormat instead.
+   */
+  videojs.resetFormatTime = deprecateForMajor(9, 'videojs.resetFormatTime', 'videojs.time.resetFormatTime', resetFormatTime);
+
+  /**
+   * Deprecated reference to the {@link module:url.parseUrl|Url.parseUrl function}
+   *
+   * @type {Function}
+   * @see {@link module:url.parseUrl|parseUrl}
+   * @deprecated Deprecated and will be removed in 9.0. Please use videojs.url.parseUrl instead.
+   */
+  videojs.parseUrl = deprecateForMajor(9, 'videojs.parseUrl', 'videojs.url.parseUrl', parseUrl);
+
+  /**
+   * Deprecated reference to the {@link module:url.isCrossOrigin|Url.isCrossOrigin function}
+   *
+   * @type {Function}
+   * @see {@link module:url.isCrossOrigin|isCrossOrigin}
+   * @deprecated Deprecated and will be removed in 9.0. Please use videojs.url.isCrossOrigin instead.
+   */
+  videojs.isCrossOrigin = deprecateForMajor(9, 'videojs.isCrossOrigin', 'videojs.url.isCrossOrigin', isCrossOrigin);
+  videojs.EventTarget = EventTarget$2;
+  videojs.any = any;
+  videojs.on = on;
+  videojs.one = one;
+  videojs.off = off;
+  videojs.trigger = trigger;
+
+  /**
+   * A cross-browser XMLHttpRequest wrapper.
+   *
+   * @function
+   * @param    {Object} options
+   *           Settings for the request.
+   *
+   * @return   {XMLHttpRequest|XDomainRequest}
+   *           The request object.
+   *
+   * @see      https://github.com/Raynos/xhr
+   */
+  videojs.xhr = lib;
+  videojs.TextTrack = TextTrack;
+  videojs.AudioTrack = AudioTrack;
+  videojs.VideoTrack = VideoTrack;
+  ['isEl', 'isTextNode', 'createEl', 'hasClass', 'addClass', 'removeClass', 'toggleClass', 'setAttributes', 'getAttributes', 'emptyEl', 'appendContent', 'insertContent'].forEach(k => {
+    videojs[k] = function () {
+      log$1.warn(`videojs.${k}() is deprecated; use videojs.dom.${k}() instead`);
+      return Dom[k].apply(null, arguments);
+    };
+  });
+  videojs.computedStyle = deprecateForMajor(9, 'videojs.computedStyle', 'videojs.dom.computedStyle', computedStyle);
+
+  /**
+   * A reference to the {@link module:dom|DOM utility module} as an object.
+   *
+   * @type {Object}
+   * @see {@link module:dom|dom}
+   */
+  videojs.dom = Dom;
+
+  /**
+   * A reference to the {@link module:fn|fn utility module} as an object.
+   *
+   * @type {Object}
+   * @see {@link module:fn|fn}
+   */
+  videojs.fn = Fn;
+
+  /**
+   * A reference to the {@link module:num|num utility module} as an object.
+   *
+   * @type {Object}
+   * @see {@link module:num|num}
+   */
+  videojs.num = Num;
+
+  /**
+   * A reference to the {@link module:str|str utility module} as an object.
+   *
+   * @type {Object}
+   * @see {@link module:str|str}
+   */
+  videojs.str = Str;
+
+  /**
+   * A reference to the {@link module:url|URL utility module} as an object.
+   *
+   * @type {Object}
+   * @see {@link module:url|url}
+   */
+  videojs.url = Url;
+
+  // The list of possible error types to occur in video.js
+  videojs.Error = VjsErrors;
+
+  createCommonjsModule(function (module, exports) {
+    /*! @name videojs-contrib-quality-levels @version 4.1.0 @license Apache-2.0 */
+    (function (global, factory) {
+      module.exports = factory(videojs) ;
+    })(commonjsGlobal, function (videojs) {
+
+      function _interopDefaultLegacy(e) {
+        return e && typeof e === 'object' && 'default' in e ? e : {
+          'default': e
+        };
+      }
+      var videojs__default = /*#__PURE__*/_interopDefaultLegacy(videojs);
+
+      /**
+       * A single QualityLevel.
+       *
+       * interface QualityLevel {
+       *   readonly attribute DOMString id;
+       *            attribute DOMString label;
+       *   readonly attribute long width;
+       *   readonly attribute long height;
+       *   readonly attribute long bitrate;
+       *            attribute boolean enabled;
+       * };
+       *
+       * @class QualityLevel
+       */
+      class QualityLevel {
+        /**
+         * Creates a QualityLevel
+         *
+         * @param {Representation|Object} representation The representation of the quality level
+         * @param {string}   representation.id        Unique id of the QualityLevel
+         * @param {number=}  representation.width     Resolution width of the QualityLevel
+         * @param {number=}  representation.height    Resolution height of the QualityLevel
+         * @param {number}   representation.bandwidth Bitrate of the QualityLevel
+         * @param {number=}  representation.frameRate Frame-rate of the QualityLevel
+         * @param {Function} representation.enabled   Callback to enable/disable QualityLevel
+         */
+        constructor(representation) {
+          let level = this; // eslint-disable-line
+
+          level.id = representation.id;
+          level.label = level.id;
+          level.width = representation.width;
+          level.height = representation.height;
+          level.bitrate = representation.bandwidth;
+          level.frameRate = representation.frameRate;
+          level.enabled_ = representation.enabled;
+          Object.defineProperty(level, 'enabled', {
+            /**
+             * Get whether the QualityLevel is enabled.
+             *
+             * @return {boolean} True if the QualityLevel is enabled.
+             */
+            get() {
+              return level.enabled_();
+            },
+            /**
+             * Enable or disable the QualityLevel.
+             *
+             * @param {boolean} enable true to enable QualityLevel, false to disable.
+             */
+            set(enable) {
+              level.enabled_(enable);
+            }
+          });
+          return level;
+        }
+      }
+
+      /**
+       * A list of QualityLevels.
+       *
+       * interface QualityLevelList : EventTarget {
+       *   getter QualityLevel (unsigned long index);
+       *   readonly attribute unsigned long length;
+       *   readonly attribute long selectedIndex;
+       *
+       *   void addQualityLevel(QualityLevel qualityLevel)
+       *   void removeQualityLevel(QualityLevel remove)
+       *   QualityLevel? getQualityLevelById(DOMString id);
+       *
+       *   attribute EventHandler onchange;
+       *   attribute EventHandler onaddqualitylevel;
+       *   attribute EventHandler onremovequalitylevel;
+       * };
+       *
+       * @extends videojs.EventTarget
+       * @class QualityLevelList
+       */
+      class QualityLevelList extends videojs__default["default"].EventTarget {
+        /**
+         * Creates a QualityLevelList.
+         */
+        constructor() {
+          super();
+          let list = this; // eslint-disable-line
+
+          list.levels_ = [];
+          list.selectedIndex_ = -1;
+
+          /**
+           * Get the index of the currently selected QualityLevel.
+           *
+           * @returns {number} The index of the selected QualityLevel. -1 if none selected.
+           * @readonly
+           */
+          Object.defineProperty(list, 'selectedIndex', {
+            get() {
+              return list.selectedIndex_;
+            }
+          });
+
+          /**
+           * Get the length of the list of QualityLevels.
+           *
+           * @returns {number} The length of the list.
+           * @readonly
+           */
+          Object.defineProperty(list, 'length', {
+            get() {
+              return list.levels_.length;
+            }
+          });
+          list[Symbol.iterator] = () => list.levels_.values();
+          return list;
+        }
+
+        /**
+         * Adds a quality level to the list.
+         *
+         * @param {Representation|Object} representation The representation of the quality level
+         * @param {string}   representation.id        Unique id of the QualityLevel
+         * @param {number=}  representation.width     Resolution width of the QualityLevel
+         * @param {number=}  representation.height    Resolution height of the QualityLevel
+         * @param {number}   representation.bandwidth Bitrate of the QualityLevel
+         * @param {number=}  representation.frameRate Frame-rate of the QualityLevel
+         * @param {Function} representation.enabled   Callback to enable/disable QualityLevel
+         * @return {QualityLevel} the QualityLevel added to the list
+         * @method addQualityLevel
+         */
+        addQualityLevel(representation) {
+          let qualityLevel = this.getQualityLevelById(representation.id);
+
+          // Do not add duplicate quality levels
+          if (qualityLevel) {
+            return qualityLevel;
+          }
+          const index = this.levels_.length;
+          qualityLevel = new QualityLevel(representation);
+          if (!('' + index in this)) {
+            Object.defineProperty(this, index, {
+              get() {
+                return this.levels_[index];
+              }
+            });
+          }
+          this.levels_.push(qualityLevel);
+          this.trigger({
+            qualityLevel,
+            type: 'addqualitylevel'
+          });
+          return qualityLevel;
+        }
+
+        /**
+         * Removes a quality level from the list.
+         *
+         * @param {QualityLevel} qualityLevel The QualityLevel to remove from the list.
+         * @return {QualityLevel|null} the QualityLevel removed or null if nothing removed
+         * @method removeQualityLevel
+         */
+        removeQualityLevel(qualityLevel) {
+          let removed = null;
+          for (let i = 0, l = this.length; i < l; i++) {
+            if (this[i] === qualityLevel) {
+              removed = this.levels_.splice(i, 1)[0];
+              if (this.selectedIndex_ === i) {
+                this.selectedIndex_ = -1;
+              } else if (this.selectedIndex_ > i) {
+                this.selectedIndex_--;
+              }
+              break;
+            }
+          }
+          if (removed) {
+            this.trigger({
+              qualityLevel,
+              type: 'removequalitylevel'
+            });
+          }
+          return removed;
+        }
+
+        /**
+         * Searches for a QualityLevel with the given id.
+         *
+         * @param {string} id The id of the QualityLevel to find.
+         * @return {QualityLevel|null} The QualityLevel with id, or null if not found.
+         * @method getQualityLevelById
+         */
+        getQualityLevelById(id) {
+          for (let i = 0, l = this.length; i < l; i++) {
+            const level = this[i];
+            if (level.id === id) {
+              return level;
+            }
+          }
+          return null;
+        }
+
+        /**
+         * Resets the list of QualityLevels to empty
+         *
+         * @method dispose
+         */
+        dispose() {
+          this.selectedIndex_ = -1;
+          this.levels_.length = 0;
+        }
+      }
+
+      /**
+       * change - The selected QualityLevel has changed.
+       * addqualitylevel - A QualityLevel has been added to the QualityLevelList.
+       * removequalitylevel - A QualityLevel has been removed from the QualityLevelList.
+       */
+      QualityLevelList.prototype.allowedEvents_ = {
+        change: 'change',
+        addqualitylevel: 'addqualitylevel',
+        removequalitylevel: 'removequalitylevel'
+      };
+
+      // emulate attribute EventHandler support to allow for feature detection
+      for (const event in QualityLevelList.prototype.allowedEvents_) {
+        QualityLevelList.prototype['on' + event] = null;
+      }
+      var version = "4.1.0";
+
+      /**
+       * Initialization function for the qualityLevels plugin. Sets up the QualityLevelList and
+       * event handlers.
+       *
+       * @param {Player} player Player object.
+       * @param {Object} options Plugin options object.
+       * @return {QualityLevelList} a list of QualityLevels
+       */
+      const initPlugin = function (player, options) {
+        const originalPluginFn = player.qualityLevels;
+        const qualityLevelList = new QualityLevelList();
+        const disposeHandler = function () {
+          qualityLevelList.dispose();
+          player.qualityLevels = originalPluginFn;
+          player.off('dispose', disposeHandler);
+        };
+        player.on('dispose', disposeHandler);
+        player.qualityLevels = () => qualityLevelList;
+        player.qualityLevels.VERSION = version;
+        return qualityLevelList;
+      };
+
+      /**
+       * A video.js plugin.
+       *
+       * In the plugin function, the value of `this` is a video.js `Player`
+       * instance. You cannot rely on the player being in a "ready" state here,
+       * depending on how the plugin is invoked. This may or may not be important
+       * to you; if not, remove the wait for "ready"!
+       *
+       * @param {Object} options Plugin options object
+       * @return {QualityLevelList} a list of QualityLevels
+       */
+      const qualityLevels = function (options) {
+        return initPlugin(this, videojs__default["default"].obj.merge({}, options));
+      };
+
+      // Register the plugin with video.js.
+      videojs__default["default"].registerPlugin('qualityLevels', qualityLevels);
+
+      // Include the version number.
+      qualityLevels.VERSION = version;
+      return qualityLevels;
+    });
+  });
+
+  var urlToolkit = createCommonjsModule(function (module, exports) {
+    // see https://tools.ietf.org/html/rfc1808
+
+    (function (root) {
+      var URL_REGEX = /^(?=((?:[a-zA-Z0-9+\-.]+:)?))\1(?=((?:\/\/[^\/?#]*)?))\2(?=((?:(?:[^?#\/]*\/)*[^;?#\/]*)?))\3((?:;[^?#]*)?)(\?[^#]*)?(#[^]*)?$/;
+      var FIRST_SEGMENT_REGEX = /^(?=([^\/?#]*))\1([^]*)$/;
+      var SLASH_DOT_REGEX = /(?:\/|^)\.(?=\/)/g;
+      var SLASH_DOT_DOT_REGEX = /(?:\/|^)\.\.\/(?!\.\.\/)[^\/]*(?=\/)/g;
+      var URLToolkit = {
+        // If opts.alwaysNormalize is true then the path will always be normalized even when it starts with / or //
+        // E.g
+        // With opts.alwaysNormalize = false (default, spec compliant)
+        // http://a.com/b/cd + /e/f/../g => http://a.com/e/f/../g
+        // With opts.alwaysNormalize = true (not spec compliant)
+        // http://a.com/b/cd + /e/f/../g => http://a.com/e/g
+        buildAbsoluteURL: function (baseURL, relativeURL, opts) {
+          opts = opts || {};
+          // remove any remaining space and CRLF
+          baseURL = baseURL.trim();
+          relativeURL = relativeURL.trim();
+          if (!relativeURL) {
+            // 2a) If the embedded URL is entirely empty, it inherits the
+            // entire base URL (i.e., is set equal to the base URL)
+            // and we are done.
+            if (!opts.alwaysNormalize) {
+              return baseURL;
+            }
+            var basePartsForNormalise = URLToolkit.parseURL(baseURL);
+            if (!basePartsForNormalise) {
+              throw new Error('Error trying to parse base URL.');
+            }
+            basePartsForNormalise.path = URLToolkit.normalizePath(basePartsForNormalise.path);
+            return URLToolkit.buildURLFromParts(basePartsForNormalise);
+          }
+          var relativeParts = URLToolkit.parseURL(relativeURL);
+          if (!relativeParts) {
+            throw new Error('Error trying to parse relative URL.');
+          }
+          if (relativeParts.scheme) {
+            // 2b) If the embedded URL starts with a scheme name, it is
+            // interpreted as an absolute URL and we are done.
+            if (!opts.alwaysNormalize) {
+              return relativeURL;
+            }
+            relativeParts.path = URLToolkit.normalizePath(relativeParts.path);
+            return URLToolkit.buildURLFromParts(relativeParts);
+          }
+          var baseParts = URLToolkit.parseURL(baseURL);
+          if (!baseParts) {
+            throw new Error('Error trying to parse base URL.');
+          }
+          if (!baseParts.netLoc && baseParts.path && baseParts.path[0] !== '/') {
+            // If netLoc missing and path doesn't start with '/', assume everthing before the first '/' is the netLoc
+            // This causes 'example.com/a' to be handled as '//example.com/a' instead of '/example.com/a'
+            var pathParts = FIRST_SEGMENT_REGEX.exec(baseParts.path);
+            baseParts.netLoc = pathParts[1];
+            baseParts.path = pathParts[2];
+          }
+          if (baseParts.netLoc && !baseParts.path) {
+            baseParts.path = '/';
+          }
+          var builtParts = {
+            // 2c) Otherwise, the embedded URL inherits the scheme of
+            // the base URL.
+            scheme: baseParts.scheme,
+            netLoc: relativeParts.netLoc,
+            path: null,
+            params: relativeParts.params,
+            query: relativeParts.query,
+            fragment: relativeParts.fragment
+          };
+          if (!relativeParts.netLoc) {
+            // 3) If the embedded URL's <net_loc> is non-empty, we skip to
+            // Step 7.  Otherwise, the embedded URL inherits the <net_loc>
+            // (if any) of the base URL.
+            builtParts.netLoc = baseParts.netLoc;
+            // 4) If the embedded URL path is preceded by a slash "/", the
+            // path is not relative and we skip to Step 7.
+            if (relativeParts.path[0] !== '/') {
+              if (!relativeParts.path) {
+                // 5) If the embedded URL path is empty (and not preceded by a
+                // slash), then the embedded URL inherits the base URL path
+                builtParts.path = baseParts.path;
+                // 5a) if the embedded URL's <params> is non-empty, we skip to
+                // step 7; otherwise, it inherits the <params> of the base
+                // URL (if any) and
+                if (!relativeParts.params) {
+                  builtParts.params = baseParts.params;
+                  // 5b) if the embedded URL's <query> is non-empty, we skip to
+                  // step 7; otherwise, it inherits the <query> of the base
+                  // URL (if any) and we skip to step 7.
+                  if (!relativeParts.query) {
+                    builtParts.query = baseParts.query;
+                  }
+                }
+              } else {
+                // 6) The last segment of the base URL's path (anything
+                // following the rightmost slash "/", or the entire path if no
+                // slash is present) is removed and the embedded URL's path is
+                // appended in its place.
+                var baseURLPath = baseParts.path;
+                var newPath = baseURLPath.substring(0, baseURLPath.lastIndexOf('/') + 1) + relativeParts.path;
+                builtParts.path = URLToolkit.normalizePath(newPath);
+              }
+            }
+          }
+          if (builtParts.path === null) {
+            builtParts.path = opts.alwaysNormalize ? URLToolkit.normalizePath(relativeParts.path) : relativeParts.path;
+          }
+          return URLToolkit.buildURLFromParts(builtParts);
+        },
+        parseURL: function (url) {
+          var parts = URL_REGEX.exec(url);
+          if (!parts) {
+            return null;
+          }
+          return {
+            scheme: parts[1] || '',
+            netLoc: parts[2] || '',
+            path: parts[3] || '',
+            params: parts[4] || '',
+            query: parts[5] || '',
+            fragment: parts[6] || ''
+          };
+        },
+        normalizePath: function (path) {
+          // The following operations are
+          // then applied, in order, to the new path:
+          // 6a) All occurrences of "./", where "." is a complete path
+          // segment, are removed.
+          // 6b) If the path ends with "." as a complete path segment,
+          // that "." is removed.
+          path = path.split('').reverse().join('').replace(SLASH_DOT_REGEX, '');
+          // 6c) All occurrences of "<segment>/../", where <segment> is a
+          // complete path segment not equal to "..", are removed.
+          // Removal of these path segments is performed iteratively,
+          // removing the leftmost matching pattern on each iteration,
+          // until no matching pattern remains.
+          // 6d) If the path ends with "<segment>/..", where <segment> is a
+          // complete path segment not equal to "..", that
+          // "<segment>/.." is removed.
+          while (path.length !== (path = path.replace(SLASH_DOT_DOT_REGEX, '')).length) {}
+          return path.split('').reverse().join('');
+        },
+        buildURLFromParts: function (parts) {
+          return parts.scheme + parts.netLoc + parts.path + parts.params + parts.query + parts.fragment;
+        }
+      };
+      module.exports = URLToolkit;
+    })();
+  });
+
+  var DEFAULT_LOCATION = 'http://example.com';
+  var resolveUrl$1 = function resolveUrl(baseUrl, relativeUrl) {
+    // return early if we don't need to resolve
+    if (/^[a-z]+:/i.test(relativeUrl)) {
+      return relativeUrl;
+    } // if baseUrl is a data URI, ignore it and resolve everything relative to window.location
+
+    if (/^data:/.test(baseUrl)) {
+      baseUrl = window.location && window.location.href || '';
+    } // IE11 supports URL but not the URL constructor
+    // feature detect the behavior we want
+
+    var nativeURL = typeof window.URL === 'function';
+    var protocolLess = /^\/\//.test(baseUrl); // remove location if window.location isn't available (i.e. we're in node)
+    // and if baseUrl isn't an absolute url
+
+    var removeLocation = !window.location && !/\/\//i.test(baseUrl); // if the base URL is relative then combine with the current location
+
+    if (nativeURL) {
+      baseUrl = new window.URL(baseUrl, window.location || DEFAULT_LOCATION);
+    } else if (!/\/\//i.test(baseUrl)) {
+      baseUrl = urlToolkit.buildAbsoluteURL(window.location && window.location.href || '', baseUrl);
+    }
+    if (nativeURL) {
+      var newUrl = new URL(relativeUrl, baseUrl); // if we're a protocol-less url, remove the protocol
+      // and if we're location-less, remove the location
+      // otherwise, return the url unmodified
+
+      if (removeLocation) {
+        return newUrl.href.slice(DEFAULT_LOCATION.length);
+      } else if (protocolLess) {
+        return newUrl.href.slice(newUrl.protocol.length);
+      }
+      return newUrl.href;
+    }
+    return urlToolkit.buildAbsoluteURL(baseUrl, relativeUrl);
+  };
+
+  /**
+   * @file stream.js
+   */
+
+  /**
+   * A lightweight readable stream implemention that handles event dispatching.
+   *
+   * @class Stream
+   */
+  var Stream = /*#__PURE__*/function () {
+    function Stream() {
+      this.listeners = {};
+    }
+    /**
+     * Add a listener for a specified event type.
+     *
+     * @param {string} type the event name
+     * @param {Function} listener the callback to be invoked when an event of
+     * the specified type occurs
+     */
+
+    var _proto = Stream.prototype;
+    _proto.on = function on(type, listener) {
+      if (!this.listeners[type]) {
+        this.listeners[type] = [];
+      }
+      this.listeners[type].push(listener);
+    }
+    /**
+     * Remove a listener for a specified event type.
+     *
+     * @param {string} type the event name
+     * @param {Function} listener  a function previously registered for this
+     * type of event through `on`
+     * @return {boolean} if we could turn it off or not
+     */;
+
+    _proto.off = function off(type, listener) {
+      if (!this.listeners[type]) {
+        return false;
+      }
+      var index = this.listeners[type].indexOf(listener); // TODO: which is better?
+      // In Video.js we slice listener functions
+      // on trigger so that it does not mess up the order
+      // while we loop through.
+      //
+      // Here we slice on off so that the loop in trigger
+      // can continue using it's old reference to loop without
+      // messing up the order.
+
+      this.listeners[type] = this.listeners[type].slice(0);
+      this.listeners[type].splice(index, 1);
+      return index > -1;
+    }
+    /**
+     * Trigger an event of the specified type on this stream. Any additional
+     * arguments to this function are passed as parameters to event listeners.
+     *
+     * @param {string} type the event name
+     */;
+
+    _proto.trigger = function trigger(type) {
+      var callbacks = this.listeners[type];
+      if (!callbacks) {
+        return;
+      } // Slicing the arguments on every invocation of this method
+      // can add a significant amount of overhead. Avoid the
+      // intermediate object creation for the common case of a
+      // single callback argument
+
+      if (arguments.length === 2) {
+        var length = callbacks.length;
+        for (var i = 0; i < length; ++i) {
+          callbacks[i].call(this, arguments[1]);
+        }
+      } else {
+        var args = Array.prototype.slice.call(arguments, 1);
+        var _length = callbacks.length;
+        for (var _i = 0; _i < _length; ++_i) {
+          callbacks[_i].apply(this, args);
+        }
+      }
+    }
+    /**
+     * Destroys the stream and cleans up.
+     */;
+
+    _proto.dispose = function dispose() {
+      this.listeners = {};
+    }
+    /**
+     * Forwards all `data` events on this stream to the destination stream. The
+     * destination stream should provide a method `push` to receive the data
+     * events as they arrive.
+     *
+     * @param {Stream} destination the stream that will receive all `data` events
+     * @see http://nodejs.org/api/stream.html#stream_readable_pipe_destination_options
+     */;
+
+    _proto.pipe = function pipe(destination) {
+      this.on('data', function (data) {
+        destination.push(data);
+      });
+    };
+    return Stream;
+  }();
+
+  var atob$1 = function atob(s) {
+    return window.atob ? window.atob(s) : Buffer.from(s, 'base64').toString('binary');
+  };
+  function decodeB64ToUint8Array$1(b64Text) {
+    var decodedString = atob$1(b64Text);
+    var array = new Uint8Array(decodedString.length);
+    for (var i = 0; i < decodedString.length; i++) {
+      array[i] = decodedString.charCodeAt(i);
+    }
+    return array;
+  }
+
+  /*! @name m3u8-parser @version 7.1.0 @license Apache-2.0 */
+
+  /**
+   * @file m3u8/line-stream.js
+   */
+  /**
+   * A stream that buffers string input and generates a `data` event for each
+   * line.
+   *
+   * @class LineStream
+   * @extends Stream
+   */
+
+  class LineStream extends Stream {
+    constructor() {
+      super();
+      this.buffer = '';
+    }
+    /**
+     * Add new data to be parsed.
+     *
+     * @param {string} data the text to process
+     */
+
+    push(data) {
+      let nextNewline;
+      this.buffer += data;
+      nextNewline = this.buffer.indexOf('\n');
+      for (; nextNewline > -1; nextNewline = this.buffer.indexOf('\n')) {
+        this.trigger('data', this.buffer.substring(0, nextNewline));
+        this.buffer = this.buffer.substring(nextNewline + 1);
+      }
+    }
+  }
+  const TAB = String.fromCharCode(0x09);
+  const parseByterange = function (byterangeString) {
+    // optionally match and capture 0+ digits before `@`
+    // optionally match and capture 0+ digits after `@`
+    const match = /([0-9.]*)?@?([0-9.]*)?/.exec(byterangeString || '');
+    const result = {};
+    if (match[1]) {
+      result.length = parseInt(match[1], 10);
+    }
+    if (match[2]) {
+      result.offset = parseInt(match[2], 10);
+    }
+    return result;
+  };
+  /**
+   * "forgiving" attribute list psuedo-grammar:
+   * attributes -> keyvalue (',' keyvalue)*
+   * keyvalue   -> key '=' value
+   * key        -> [^=]*
+   * value      -> '"' [^"]* '"' | [^,]*
+   */
+
+  const attributeSeparator = function () {
+    const key = '[^=]*';
+    const value = '"[^"]*"|[^,]*';
+    const keyvalue = '(?:' + key + ')=(?:' + value + ')';
+    return new RegExp('(?:^|,)(' + keyvalue + ')');
+  };
+  /**
+   * Parse attributes from a line given the separator
+   *
+   * @param {string} attributes the attribute line to parse
+   */
+
+  const parseAttributes$1 = function (attributes) {
+    const result = {};
+    if (!attributes) {
+      return result;
+    } // split the string using attributes as the separator
+
+    const attrs = attributes.split(attributeSeparator());
+    let i = attrs.length;
+    let attr;
+    while (i--) {
+      // filter out unmatched portions of the string
+      if (attrs[i] === '') {
+        continue;
+      } // split the key and value
+
+      attr = /([^=]*)=(.*)/.exec(attrs[i]).slice(1); // trim whitespace and remove optional quotes around the value
+
+      attr[0] = attr[0].replace(/^\s+|\s+$/g, '');
+      attr[1] = attr[1].replace(/^\s+|\s+$/g, '');
+      attr[1] = attr[1].replace(/^['"](.*)['"]$/g, '$1');
+      result[attr[0]] = attr[1];
+    }
+    return result;
+  };
+  /**
+   * A line-level M3U8 parser event stream. It expects to receive input one
+   * line at a time and performs a context-free parse of its contents. A stream
+   * interpretation of a manifest can be useful if the manifest is expected to
+   * be too large to fit comfortably into memory or the entirety of the input
+   * is not immediately available. Otherwise, it's probably much easier to work
+   * with a regular `Parser` object.
+   *
+   * Produces `data` events with an object that captures the parser's
+   * interpretation of the input. That object has a property `tag` that is one
+   * of `uri`, `comment`, or `tag`. URIs only have a single additional
+   * property, `line`, which captures the entirety of the input without
+   * interpretation. Comments similarly have a single additional property
+   * `text` which is the input without the leading `#`.
+   *
+   * Tags always have a property `tagType` which is the lower-cased version of
+   * the M3U8 directive without the `#EXT` or `#EXT-X-` prefix. For instance,
+   * `#EXT-X-MEDIA-SEQUENCE` becomes `media-sequence` when parsed. Unrecognized
+   * tags are given the tag type `unknown` and a single additional property
+   * `data` with the remainder of the input.
+   *
+   * @class ParseStream
+   * @extends Stream
+   */
+
+  class ParseStream extends Stream {
+    constructor() {
+      super();
+      this.customParsers = [];
+      this.tagMappers = [];
+    }
+    /**
+     * Parses an additional line of input.
+     *
+     * @param {string} line a single line of an M3U8 file to parse
+     */
+
+    push(line) {
+      let match;
+      let event; // strip whitespace
+
+      line = line.trim();
+      if (line.length === 0) {
+        // ignore empty lines
+        return;
+      } // URIs
+
+      if (line[0] !== '#') {
+        this.trigger('data', {
+          type: 'uri',
+          uri: line
+        });
+        return;
+      } // map tags
+
+      const newLines = this.tagMappers.reduce((acc, mapper) => {
+        const mappedLine = mapper(line); // skip if unchanged
+
+        if (mappedLine === line) {
+          return acc;
+        }
+        return acc.concat([mappedLine]);
+      }, [line]);
+      newLines.forEach(newLine => {
+        for (let i = 0; i < this.customParsers.length; i++) {
+          if (this.customParsers[i].call(this, newLine)) {
+            return;
+          }
+        } // Comments
+
+        if (newLine.indexOf('#EXT') !== 0) {
+          this.trigger('data', {
+            type: 'comment',
+            text: newLine.slice(1)
+          });
+          return;
+        } // strip off any carriage returns here so the regex matching
+        // doesn't have to account for them.
+
+        newLine = newLine.replace('\r', ''); // Tags
+
+        match = /^#EXTM3U/.exec(newLine);
+        if (match) {
+          this.trigger('data', {
+            type: 'tag',
+            tagType: 'm3u'
+          });
+          return;
+        }
+        match = /^#EXTINF:([0-9\.]*)?,?(.*)?$/.exec(newLine);
+        if (match) {
+          event = {
+            type: 'tag',
+            tagType: 'inf'
+          };
+          if (match[1]) {
+            event.duration = parseFloat(match[1]);
+          }
+          if (match[2]) {
+            event.title = match[2];
+          }
+          this.trigger('data', event);
+          return;
+        }
+        match = /^#EXT-X-TARGETDURATION:([0-9.]*)?/.exec(newLine);
+        if (match) {
+          event = {
+            type: 'tag',
+            tagType: 'targetduration'
+          };
+          if (match[1]) {
+            event.duration = parseInt(match[1], 10);
+          }
+          this.trigger('data', event);
+          return;
+        }
+        match = /^#EXT-X-VERSION:([0-9.]*)?/.exec(newLine);
+        if (match) {
+          event = {
+            type: 'tag',
+            tagType: 'version'
+          };
+          if (match[1]) {
+            event.version = parseInt(match[1], 10);
+          }
+          this.trigger('data', event);
+          return;
+        }
+        match = /^#EXT-X-MEDIA-SEQUENCE:(\-?[0-9.]*)?/.exec(newLine);
+        if (match) {
+          event = {
+            type: 'tag',
+            tagType: 'media-sequence'
+          };
+          if (match[1]) {
+            event.number = parseInt(match[1], 10);
+          }
+          this.trigger('data', event);
+          return;
+        }
+        match = /^#EXT-X-DISCONTINUITY-SEQUENCE:(\-?[0-9.]*)?/.exec(newLine);
+        if (match) {
+          event = {
+            type: 'tag',
+            tagType: 'discontinuity-sequence'
+          };
+          if (match[1]) {
+            event.number = parseInt(match[1], 10);
+          }
+          this.trigger('data', event);
+          return;
+        }
+        match = /^#EXT-X-PLAYLIST-TYPE:(.*)?$/.exec(newLine);
+        if (match) {
+          event = {
+            type: 'tag',
+            tagType: 'playlist-type'
+          };
+          if (match[1]) {
+            event.playlistType = match[1];
+          }
+          this.trigger('data', event);
+          return;
+        }
+        match = /^#EXT-X-BYTERANGE:(.*)?$/.exec(newLine);
+        if (match) {
+          event = _extends$1(parseByterange(match[1]), {
+            type: 'tag',
+            tagType: 'byterange'
+          });
+          this.trigger('data', event);
+          return;
+        }
+        match = /^#EXT-X-ALLOW-CACHE:(YES|NO)?/.exec(newLine);
+        if (match) {
+          event = {
+            type: 'tag',
+            tagType: 'allow-cache'
+          };
+          if (match[1]) {
+            event.allowed = !/NO/.test(match[1]);
+          }
+          this.trigger('data', event);
+          return;
+        }
+        match = /^#EXT-X-MAP:(.*)$/.exec(newLine);
+        if (match) {
+          event = {
+            type: 'tag',
+            tagType: 'map'
+          };
+          if (match[1]) {
+            const attributes = parseAttributes$1(match[1]);
+            if (attributes.URI) {
+              event.uri = attributes.URI;
+            }
+            if (attributes.BYTERANGE) {
+              event.byterange = parseByterange(attributes.BYTERANGE);
+            }
+          }
+          this.trigger('data', event);
+          return;
+        }
+        match = /^#EXT-X-STREAM-INF:(.*)$/.exec(newLine);
+        if (match) {
+          event = {
+            type: 'tag',
+            tagType: 'stream-inf'
+          };
+          if (match[1]) {
+            event.attributes = parseAttributes$1(match[1]);
+            if (event.attributes.RESOLUTION) {
+              const split = event.attributes.RESOLUTION.split('x');
+              const resolution = {};
+              if (split[0]) {
+                resolution.width = parseInt(split[0], 10);
+              }
+              if (split[1]) {
+                resolution.height = parseInt(split[1], 10);
+              }
+              event.attributes.RESOLUTION = resolution;
+            }
+            if (event.attributes.BANDWIDTH) {
+              event.attributes.BANDWIDTH = parseInt(event.attributes.BANDWIDTH, 10);
+            }
+            if (event.attributes['FRAME-RATE']) {
+              event.attributes['FRAME-RATE'] = parseFloat(event.attributes['FRAME-RATE']);
+            }
+            if (event.attributes['PROGRAM-ID']) {
+              event.attributes['PROGRAM-ID'] = parseInt(event.attributes['PROGRAM-ID'], 10);
+            }
+          }
+          this.trigger('data', event);
+          return;
+        }
+        match = /^#EXT-X-MEDIA:(.*)$/.exec(newLine);
+        if (match) {
+          event = {
+            type: 'tag',
+            tagType: 'media'
+          };
+          if (match[1]) {
+            event.attributes = parseAttributes$1(match[1]);
+          }
+          this.trigger('data', event);
+          return;
+        }
+        match = /^#EXT-X-ENDLIST/.exec(newLine);
+        if (match) {
+          this.trigger('data', {
+            type: 'tag',
+            tagType: 'endlist'
+          });
+          return;
+        }
+        match = /^#EXT-X-DISCONTINUITY/.exec(newLine);
+        if (match) {
+          this.trigger('data', {
+            type: 'tag',
+            tagType: 'discontinuity'
+          });
+          return;
+        }
+        match = /^#EXT-X-PROGRAM-DATE-TIME:(.*)$/.exec(newLine);
+        if (match) {
+          event = {
+            type: 'tag',
+            tagType: 'program-date-time'
+          };
+          if (match[1]) {
+            event.dateTimeString = match[1];
+            event.dateTimeObject = new Date(match[1]);
+          }
+          this.trigger('data', event);
+          return;
+        }
+        match = /^#EXT-X-KEY:(.*)$/.exec(newLine);
+        if (match) {
+          event = {
+            type: 'tag',
+            tagType: 'key'
+          };
+          if (match[1]) {
+            event.attributes = parseAttributes$1(match[1]); // parse the IV string into a Uint32Array
+
+            if (event.attributes.IV) {
+              if (event.attributes.IV.substring(0, 2).toLowerCase() === '0x') {
+                event.attributes.IV = event.attributes.IV.substring(2);
+              }
+              event.attributes.IV = event.attributes.IV.match(/.{8}/g);
+              event.attributes.IV[0] = parseInt(event.attributes.IV[0], 16);
+              event.attributes.IV[1] = parseInt(event.attributes.IV[1], 16);
+              event.attributes.IV[2] = parseInt(event.attributes.IV[2], 16);
+              event.attributes.IV[3] = parseInt(event.attributes.IV[3], 16);
+              event.attributes.IV = new Uint32Array(event.attributes.IV);
+            }
+          }
+          this.trigger('data', event);
+          return;
+        }
+        match = /^#EXT-X-START:(.*)$/.exec(newLine);
+        if (match) {
+          event = {
+            type: 'tag',
+            tagType: 'start'
+          };
+          if (match[1]) {
+            event.attributes = parseAttributes$1(match[1]);
+            event.attributes['TIME-OFFSET'] = parseFloat(event.attributes['TIME-OFFSET']);
+            event.attributes.PRECISE = /YES/.test(event.attributes.PRECISE);
+          }
+          this.trigger('data', event);
+          return;
+        }
+        match = /^#EXT-X-CUE-OUT-CONT:(.*)?$/.exec(newLine);
+        if (match) {
+          event = {
+            type: 'tag',
+            tagType: 'cue-out-cont'
+          };
+          if (match[1]) {
+            event.data = match[1];
+          } else {
+            event.data = '';
+          }
+          this.trigger('data', event);
+          return;
+        }
+        match = /^#EXT-X-CUE-OUT:(.*)?$/.exec(newLine);
+        if (match) {
+          event = {
+            type: 'tag',
+            tagType: 'cue-out'
+          };
+          if (match[1]) {
+            event.data = match[1];
+          } else {
+            event.data = '';
+          }
+          this.trigger('data', event);
+          return;
+        }
+        match = /^#EXT-X-CUE-IN:(.*)?$/.exec(newLine);
+        if (match) {
+          event = {
+            type: 'tag',
+            tagType: 'cue-in'
+          };
+          if (match[1]) {
+            event.data = match[1];
+          } else {
+            event.data = '';
+          }
+          this.trigger('data', event);
+          return;
+        }
+        match = /^#EXT-X-SKIP:(.*)$/.exec(newLine);
+        if (match && match[1]) {
+          event = {
+            type: 'tag',
+            tagType: 'skip'
+          };
+          event.attributes = parseAttributes$1(match[1]);
+          if (event.attributes.hasOwnProperty('SKIPPED-SEGMENTS')) {
+            event.attributes['SKIPPED-SEGMENTS'] = parseInt(event.attributes['SKIPPED-SEGMENTS'], 10);
+          }
+          if (event.attributes.hasOwnProperty('RECENTLY-REMOVED-DATERANGES')) {
+            event.attributes['RECENTLY-REMOVED-DATERANGES'] = event.attributes['RECENTLY-REMOVED-DATERANGES'].split(TAB);
+          }
+          this.trigger('data', event);
+          return;
+        }
+        match = /^#EXT-X-PART:(.*)$/.exec(newLine);
+        if (match && match[1]) {
+          event = {
+            type: 'tag',
+            tagType: 'part'
+          };
+          event.attributes = parseAttributes$1(match[1]);
+          ['DURATION'].forEach(function (key) {
+            if (event.attributes.hasOwnProperty(key)) {
+              event.attributes[key] = parseFloat(event.attributes[key]);
+            }
+          });
+          ['INDEPENDENT', 'GAP'].forEach(function (key) {
+            if (event.attributes.hasOwnProperty(key)) {
+              event.attributes[key] = /YES/.test(event.attributes[key]);
+            }
+          });
+          if (event.attributes.hasOwnProperty('BYTERANGE')) {
+            event.attributes.byterange = parseByterange(event.attributes.BYTERANGE);
+          }
+          this.trigger('data', event);
+          return;
+        }
+        match = /^#EXT-X-SERVER-CONTROL:(.*)$/.exec(newLine);
+        if (match && match[1]) {
+          event = {
+            type: 'tag',
+            tagType: 'server-control'
+          };
+          event.attributes = parseAttributes$1(match[1]);
+          ['CAN-SKIP-UNTIL', 'PART-HOLD-BACK', 'HOLD-BACK'].forEach(function (key) {
+            if (event.attributes.hasOwnProperty(key)) {
+              event.attributes[key] = parseFloat(event.attributes[key]);
+            }
+          });
+          ['CAN-SKIP-DATERANGES', 'CAN-BLOCK-RELOAD'].forEach(function (key) {
+            if (event.attributes.hasOwnProperty(key)) {
+              event.attributes[key] = /YES/.test(event.attributes[key]);
+            }
+          });
+          this.trigger('data', event);
+          return;
+        }
+        match = /^#EXT-X-PART-INF:(.*)$/.exec(newLine);
+        if (match && match[1]) {
+          event = {
+            type: 'tag',
+            tagType: 'part-inf'
+          };
+          event.attributes = parseAttributes$1(match[1]);
+          ['PART-TARGET'].forEach(function (key) {
+            if (event.attributes.hasOwnProperty(key)) {
+              event.attributes[key] = parseFloat(event.attributes[key]);
+            }
+          });
+          this.trigger('data', event);
+          return;
+        }
+        match = /^#EXT-X-PRELOAD-HINT:(.*)$/.exec(newLine);
+        if (match && match[1]) {
+          event = {
+            type: 'tag',
+            tagType: 'preload-hint'
+          };
+          event.attributes = parseAttributes$1(match[1]);
+          ['BYTERANGE-START', 'BYTERANGE-LENGTH'].forEach(function (key) {
+            if (event.attributes.hasOwnProperty(key)) {
+              event.attributes[key] = parseInt(event.attributes[key], 10);
+              const subkey = key === 'BYTERANGE-LENGTH' ? 'length' : 'offset';
+              event.attributes.byterange = event.attributes.byterange || {};
+              event.attributes.byterange[subkey] = event.attributes[key]; // only keep the parsed byterange object.
+
+              delete event.attributes[key];
+            }
+          });
+          this.trigger('data', event);
+          return;
+        }
+        match = /^#EXT-X-RENDITION-REPORT:(.*)$/.exec(newLine);
+        if (match && match[1]) {
+          event = {
+            type: 'tag',
+            tagType: 'rendition-report'
+          };
+          event.attributes = parseAttributes$1(match[1]);
+          ['LAST-MSN', 'LAST-PART'].forEach(function (key) {
+            if (event.attributes.hasOwnProperty(key)) {
+              event.attributes[key] = parseInt(event.attributes[key], 10);
+            }
+          });
+          this.trigger('data', event);
+          return;
+        }
+        match = /^#EXT-X-DATERANGE:(.*)$/.exec(newLine);
+        if (match && match[1]) {
+          event = {
+            type: 'tag',
+            tagType: 'daterange'
+          };
+          event.attributes = parseAttributes$1(match[1]);
+          ['ID', 'CLASS'].forEach(function (key) {
+            if (event.attributes.hasOwnProperty(key)) {
+              event.attributes[key] = String(event.attributes[key]);
+            }
+          });
+          ['START-DATE', 'END-DATE'].forEach(function (key) {
+            if (event.attributes.hasOwnProperty(key)) {
+              event.attributes[key] = new Date(event.attributes[key]);
+            }
+          });
+          ['DURATION', 'PLANNED-DURATION'].forEach(function (key) {
+            if (event.attributes.hasOwnProperty(key)) {
+              event.attributes[key] = parseFloat(event.attributes[key]);
+            }
+          });
+          ['END-ON-NEXT'].forEach(function (key) {
+            if (event.attributes.hasOwnProperty(key)) {
+              event.attributes[key] = /YES/i.test(event.attributes[key]);
+            }
+          });
+          ['SCTE35-CMD', ' SCTE35-OUT', 'SCTE35-IN'].forEach(function (key) {
+            if (event.attributes.hasOwnProperty(key)) {
+              event.attributes[key] = event.attributes[key].toString(16);
+            }
+          });
+          const clientAttributePattern = /^X-([A-Z]+-)+[A-Z]+$/;
+          for (const key in event.attributes) {
+            if (!clientAttributePattern.test(key)) {
+              continue;
+            }
+            const isHexaDecimal = /[0-9A-Fa-f]{6}/g.test(event.attributes[key]);
+            const isDecimalFloating = /^\d+(\.\d+)?$/.test(event.attributes[key]);
+            event.attributes[key] = isHexaDecimal ? event.attributes[key].toString(16) : isDecimalFloating ? parseFloat(event.attributes[key]) : String(event.attributes[key]);
+          }
+          this.trigger('data', event);
+          return;
+        }
+        match = /^#EXT-X-INDEPENDENT-SEGMENTS/.exec(newLine);
+        if (match) {
+          this.trigger('data', {
+            type: 'tag',
+            tagType: 'independent-segments'
+          });
+          return;
+        }
+        match = /^#EXT-X-CONTENT-STEERING:(.*)$/.exec(newLine);
+        if (match) {
+          event = {
+            type: 'tag',
+            tagType: 'content-steering'
+          };
+          event.attributes = parseAttributes$1(match[1]);
+          this.trigger('data', event);
+          return;
+        } // unknown tag type
+
+        this.trigger('data', {
+          type: 'tag',
+          data: newLine.slice(4)
+        });
+      });
+    }
+    /**
+     * Add a parser for custom headers
+     *
+     * @param {Object}   options              a map of options for the added parser
+     * @param {RegExp}   options.expression   a regular expression to match the custom header
+     * @param {string}   options.customType   the custom type to register to the output
+     * @param {Function} [options.dataParser] function to parse the line into an object
+     * @param {boolean}  [options.segment]    should tag data be attached to the segment object
+     */
+
+    addParser({
+      expression,
+      customType,
+      dataParser,
+      segment
+    }) {
+      if (typeof dataParser !== 'function') {
+        dataParser = line => line;
+      }
+      this.customParsers.push(line => {
+        const match = expression.exec(line);
+        if (match) {
+          this.trigger('data', {
+            type: 'custom',
+            data: dataParser(line),
+            customType,
+            segment
+          });
+          return true;
+        }
+      });
+    }
+    /**
+     * Add a custom header mapper
+     *
+     * @param {Object}   options
+     * @param {RegExp}   options.expression   a regular expression to match the custom header
+     * @param {Function} options.map          function to translate tag into a different tag
+     */
+
+    addTagMapper({
+      expression,
+      map
+    }) {
+      const mapFn = line => {
+        if (expression.test(line)) {
+          return map(line);
+        }
+        return line;
+      };
+      this.tagMappers.push(mapFn);
+    }
+  }
+  const camelCase = str => str.toLowerCase().replace(/-(\w)/g, a => a[1].toUpperCase());
+  const camelCaseKeys = function (attributes) {
+    const result = {};
+    Object.keys(attributes).forEach(function (key) {
+      result[camelCase(key)] = attributes[key];
+    });
+    return result;
+  }; // set SERVER-CONTROL hold back based upon targetDuration and partTargetDuration
+  // we need this helper because defaults are based upon targetDuration and
+  // partTargetDuration being set, but they may not be if SERVER-CONTROL appears before
+  // target durations are set.
+
+  const setHoldBack = function (manifest) {
+    const {
+      serverControl,
+      targetDuration,
+      partTargetDuration
+    } = manifest;
+    if (!serverControl) {
+      return;
+    }
+    const tag = '#EXT-X-SERVER-CONTROL';
+    const hb = 'holdBack';
+    const phb = 'partHoldBack';
+    const minTargetDuration = targetDuration && targetDuration * 3;
+    const minPartDuration = partTargetDuration && partTargetDuration * 2;
+    if (targetDuration && !serverControl.hasOwnProperty(hb)) {
+      serverControl[hb] = minTargetDuration;
+      this.trigger('info', {
+        message: `${tag} defaulting HOLD-BACK to targetDuration * 3 (${minTargetDuration}).`
+      });
+    }
+    if (minTargetDuration && serverControl[hb] < minTargetDuration) {
+      this.trigger('warn', {
+        message: `${tag} clamping HOLD-BACK (${serverControl[hb]}) to targetDuration * 3 (${minTargetDuration})`
+      });
+      serverControl[hb] = minTargetDuration;
+    } // default no part hold back to part target duration * 3
+
+    if (partTargetDuration && !serverControl.hasOwnProperty(phb)) {
+      serverControl[phb] = partTargetDuration * 3;
+      this.trigger('info', {
+        message: `${tag} defaulting PART-HOLD-BACK to partTargetDuration * 3 (${serverControl[phb]}).`
+      });
+    } // if part hold back is too small default it to part target duration * 2
+
+    if (partTargetDuration && serverControl[phb] < minPartDuration) {
+      this.trigger('warn', {
+        message: `${tag} clamping PART-HOLD-BACK (${serverControl[phb]}) to partTargetDuration * 2 (${minPartDuration}).`
+      });
+      serverControl[phb] = minPartDuration;
+    }
+  };
+  /**
+   * A parser for M3U8 files. The current interpretation of the input is
+   * exposed as a property `manifest` on parser objects. It's just two lines to
+   * create and parse a manifest once you have the contents available as a string:
+   *
+   * ```js
+   * var parser = new m3u8.Parser();
+   * parser.push(xhr.responseText);
+   * ```
+   *
+   * New input can later be applied to update the manifest object by calling
+   * `push` again.
+   *
+   * The parser attempts to create a usable manifest object even if the
+   * underlying input is somewhat nonsensical. It emits `info` and `warning`
+   * events during the parse if it encounters input that seems invalid or
+   * requires some property of the manifest object to be defaulted.
+   *
+   * @class Parser
+   * @extends Stream
+   */
+
+  class Parser extends Stream {
+    constructor() {
+      super();
+      this.lineStream = new LineStream();
+      this.parseStream = new ParseStream();
+      this.lineStream.pipe(this.parseStream);
+      this.lastProgramDateTime = null;
+      /* eslint-disable consistent-this */
+
+      const self = this;
+      /* eslint-enable consistent-this */
+
+      const uris = [];
+      let currentUri = {}; // if specified, the active EXT-X-MAP definition
+
+      let currentMap; // if specified, the active decryption key
+
+      let key;
+      let hasParts = false;
+      const noop = function () {};
+      const defaultMediaGroups = {
+        'AUDIO': {},
+        'VIDEO': {},
+        'CLOSED-CAPTIONS': {},
+        'SUBTITLES': {}
+      }; // This is the Widevine UUID from DASH IF IOP. The same exact string is
+      // used in MPDs with Widevine encrypted streams.
+
+      const widevineUuid = 'urn:uuid:edef8ba9-79d6-4ace-a3c8-27dcd51d21ed'; // group segments into numbered timelines delineated by discontinuities
+
+      let currentTimeline = 0; // the manifest is empty until the parse stream begins delivering data
+
+      this.manifest = {
+        allowCache: true,
+        discontinuityStarts: [],
+        dateRanges: [],
+        segments: []
+      }; // keep track of the last seen segment's byte range end, as segments are not required
+      // to provide the offset, in which case it defaults to the next byte after the
+      // previous segment
+
+      let lastByterangeEnd = 0; // keep track of the last seen part's byte range end.
+
+      let lastPartByterangeEnd = 0;
+      const dateRangeTags = {};
+      this.on('end', () => {
+        // only add preloadSegment if we don't yet have a uri for it.
+        // and we actually have parts/preloadHints
+        if (currentUri.uri || !currentUri.parts && !currentUri.preloadHints) {
+          return;
+        }
+        if (!currentUri.map && currentMap) {
+          currentUri.map = currentMap;
+        }
+        if (!currentUri.key && key) {
+          currentUri.key = key;
+        }
+        if (!currentUri.timeline && typeof currentTimeline === 'number') {
+          currentUri.timeline = currentTimeline;
+        }
+        this.manifest.preloadSegment = currentUri;
+      }); // update the manifest with the m3u8 entry from the parse stream
+
+      this.parseStream.on('data', function (entry) {
+        let mediaGroup;
+        let rendition;
+        ({
+          tag() {
+            // switch based on the tag type
+            (({
+              version() {
+                if (entry.version) {
+                  this.manifest.version = entry.version;
+                }
+              },
+              'allow-cache'() {
+                this.manifest.allowCache = entry.allowed;
+                if (!('allowed' in entry)) {
+                  this.trigger('info', {
+                    message: 'defaulting allowCache to YES'
+                  });
+                  this.manifest.allowCache = true;
+                }
+              },
+              byterange() {
+                const byterange = {};
+                if ('length' in entry) {
+                  currentUri.byterange = byterange;
+                  byterange.length = entry.length;
+                  if (!('offset' in entry)) {
+                    /*
+                     * From the latest spec (as of this writing):
+                     * https://tools.ietf.org/html/draft-pantos-http-live-streaming-23#section-4.3.2.2
+                     *
+                     * Same text since EXT-X-BYTERANGE's introduction in draft 7:
+                     * https://tools.ietf.org/html/draft-pantos-http-live-streaming-07#section-3.3.1)
+                     *
+                     * "If o [offset] is not present, the sub-range begins at the next byte
+                     * following the sub-range of the previous media segment."
+                     */
+                    entry.offset = lastByterangeEnd;
+                  }
+                }
+                if ('offset' in entry) {
+                  currentUri.byterange = byterange;
+                  byterange.offset = entry.offset;
+                }
+                lastByterangeEnd = byterange.offset + byterange.length;
+              },
+              endlist() {
+                this.manifest.endList = true;
+              },
+              inf() {
+                if (!('mediaSequence' in this.manifest)) {
+                  this.manifest.mediaSequence = 0;
+                  this.trigger('info', {
+                    message: 'defaulting media sequence to zero'
+                  });
+                }
+                if (!('discontinuitySequence' in this.manifest)) {
+                  this.manifest.discontinuitySequence = 0;
+                  this.trigger('info', {
+                    message: 'defaulting discontinuity sequence to zero'
+                  });
+                }
+                if (entry.title) {
+                  currentUri.title = entry.title;
+                }
+                if (entry.duration > 0) {
+                  currentUri.duration = entry.duration;
+                }
+                if (entry.duration === 0) {
+                  currentUri.duration = 0.01;
+                  this.trigger('info', {
+                    message: 'updating zero segment duration to a small value'
+                  });
+                }
+                this.manifest.segments = uris;
+              },
+              key() {
+                if (!entry.attributes) {
+                  this.trigger('warn', {
+                    message: 'ignoring key declaration without attribute list'
+                  });
+                  return;
+                } // clear the active encryption key
+
+                if (entry.attributes.METHOD === 'NONE') {
+                  key = null;
+                  return;
+                }
+                if (!entry.attributes.URI) {
+                  this.trigger('warn', {
+                    message: 'ignoring key declaration without URI'
+                  });
+                  return;
+                }
+                if (entry.attributes.KEYFORMAT === 'com.apple.streamingkeydelivery') {
+                  this.manifest.contentProtection = this.manifest.contentProtection || {}; // TODO: add full support for this.
+
+                  this.manifest.contentProtection['com.apple.fps.1_0'] = {
+                    attributes: entry.attributes
+                  };
+                  return;
+                }
+                if (entry.attributes.KEYFORMAT === 'com.microsoft.playready') {
+                  this.manifest.contentProtection = this.manifest.contentProtection || {}; // TODO: add full support for this.
+
+                  this.manifest.contentProtection['com.microsoft.playready'] = {
+                    uri: entry.attributes.URI
+                  };
+                  return;
+                } // check if the content is encrypted for Widevine
+                // Widevine/HLS spec: https://storage.googleapis.com/wvdocs/Widevine_DRM_HLS.pdf
+
+                if (entry.attributes.KEYFORMAT === widevineUuid) {
+                  const VALID_METHODS = ['SAMPLE-AES', 'SAMPLE-AES-CTR', 'SAMPLE-AES-CENC'];
+                  if (VALID_METHODS.indexOf(entry.attributes.METHOD) === -1) {
+                    this.trigger('warn', {
+                      message: 'invalid key method provided for Widevine'
+                    });
+                    return;
+                  }
+                  if (entry.attributes.METHOD === 'SAMPLE-AES-CENC') {
+                    this.trigger('warn', {
+                      message: 'SAMPLE-AES-CENC is deprecated, please use SAMPLE-AES-CTR instead'
+                    });
+                  }
+                  if (entry.attributes.URI.substring(0, 23) !== 'data:text/plain;base64,') {
+                    this.trigger('warn', {
+                      message: 'invalid key URI provided for Widevine'
+                    });
+                    return;
+                  }
+                  if (!(entry.attributes.KEYID && entry.attributes.KEYID.substring(0, 2) === '0x')) {
+                    this.trigger('warn', {
+                      message: 'invalid key ID provided for Widevine'
+                    });
+                    return;
+                  } // if Widevine key attributes are valid, store them as `contentProtection`
+                  // on the manifest to emulate Widevine tag structure in a DASH mpd
+
+                  this.manifest.contentProtection = this.manifest.contentProtection || {};
+                  this.manifest.contentProtection['com.widevine.alpha'] = {
+                    attributes: {
+                      schemeIdUri: entry.attributes.KEYFORMAT,
+                      // remove '0x' from the key id string
+                      keyId: entry.attributes.KEYID.substring(2)
+                    },
+                    // decode the base64-encoded PSSH box
+                    pssh: decodeB64ToUint8Array$1(entry.attributes.URI.split(',')[1])
+                  };
+                  return;
+                }
+                if (!entry.attributes.METHOD) {
+                  this.trigger('warn', {
+                    message: 'defaulting key method to AES-128'
+                  });
+                } // setup an encryption key for upcoming segments
+
+                key = {
+                  method: entry.attributes.METHOD || 'AES-128',
+                  uri: entry.attributes.URI
+                };
+                if (typeof entry.attributes.IV !== 'undefined') {
+                  key.iv = entry.attributes.IV;
+                }
+              },
+              'media-sequence'() {
+                if (!isFinite(entry.number)) {
+                  this.trigger('warn', {
+                    message: 'ignoring invalid media sequence: ' + entry.number
+                  });
+                  return;
+                }
+                this.manifest.mediaSequence = entry.number;
+              },
+              'discontinuity-sequence'() {
+                if (!isFinite(entry.number)) {
+                  this.trigger('warn', {
+                    message: 'ignoring invalid discontinuity sequence: ' + entry.number
+                  });
+                  return;
+                }
+                this.manifest.discontinuitySequence = entry.number;
+                currentTimeline = entry.number;
+              },
+              'playlist-type'() {
+                if (!/VOD|EVENT/.test(entry.playlistType)) {
+                  this.trigger('warn', {
+                    message: 'ignoring unknown playlist type: ' + entry.playlist
+                  });
+                  return;
+                }
+                this.manifest.playlistType = entry.playlistType;
+              },
+              map() {
+                currentMap = {};
+                if (entry.uri) {
+                  currentMap.uri = entry.uri;
+                }
+                if (entry.byterange) {
+                  currentMap.byterange = entry.byterange;
+                }
+                if (key) {
+                  currentMap.key = key;
+                }
+              },
+              'stream-inf'() {
+                this.manifest.playlists = uris;
+                this.manifest.mediaGroups = this.manifest.mediaGroups || defaultMediaGroups;
+                if (!entry.attributes) {
+                  this.trigger('warn', {
+                    message: 'ignoring empty stream-inf attributes'
+                  });
+                  return;
+                }
+                if (!currentUri.attributes) {
+                  currentUri.attributes = {};
+                }
+                _extends$1(currentUri.attributes, entry.attributes);
+              },
+              media() {
+                this.manifest.mediaGroups = this.manifest.mediaGroups || defaultMediaGroups;
+                if (!(entry.attributes && entry.attributes.TYPE && entry.attributes['GROUP-ID'] && entry.attributes.NAME)) {
+                  this.trigger('warn', {
+                    message: 'ignoring incomplete or missing media group'
+                  });
+                  return;
+                } // find the media group, creating defaults as necessary
+
+                const mediaGroupType = this.manifest.mediaGroups[entry.attributes.TYPE];
+                mediaGroupType[entry.attributes['GROUP-ID']] = mediaGroupType[entry.attributes['GROUP-ID']] || {};
+                mediaGroup = mediaGroupType[entry.attributes['GROUP-ID']]; // collect the rendition metadata
+
+                rendition = {
+                  default: /yes/i.test(entry.attributes.DEFAULT)
+                };
+                if (rendition.default) {
+                  rendition.autoselect = true;
+                } else {
+                  rendition.autoselect = /yes/i.test(entry.attributes.AUTOSELECT);
+                }
+                if (entry.attributes.LANGUAGE) {
+                  rendition.language = entry.attributes.LANGUAGE;
+                }
+                if (entry.attributes.URI) {
+                  rendition.uri = entry.attributes.URI;
+                }
+                if (entry.attributes['INSTREAM-ID']) {
+                  rendition.instreamId = entry.attributes['INSTREAM-ID'];
+                }
+                if (entry.attributes.CHARACTERISTICS) {
+                  rendition.characteristics = entry.attributes.CHARACTERISTICS;
+                }
+                if (entry.attributes.FORCED) {
+                  rendition.forced = /yes/i.test(entry.attributes.FORCED);
+                } // insert the new rendition
+
+                mediaGroup[entry.attributes.NAME] = rendition;
+              },
+              discontinuity() {
+                currentTimeline += 1;
+                currentUri.discontinuity = true;
+                this.manifest.discontinuityStarts.push(uris.length);
+              },
+              'program-date-time'() {
+                if (typeof this.manifest.dateTimeString === 'undefined') {
+                  // PROGRAM-DATE-TIME is a media-segment tag, but for backwards
+                  // compatibility, we add the first occurence of the PROGRAM-DATE-TIME tag
+                  // to the manifest object
+                  // TODO: Consider removing this in future major version
+                  this.manifest.dateTimeString = entry.dateTimeString;
+                  this.manifest.dateTimeObject = entry.dateTimeObject;
+                }
+                currentUri.dateTimeString = entry.dateTimeString;
+                currentUri.dateTimeObject = entry.dateTimeObject;
+                const {
+                  lastProgramDateTime
+                } = this;
+                this.lastProgramDateTime = new Date(entry.dateTimeString).getTime(); // We should extrapolate Program Date Time backward only during first program date time occurrence.
+                // Once we have at least one program date time point, we can always extrapolate it forward using lastProgramDateTime reference.
+
+                if (lastProgramDateTime === null) {
+                  // Extrapolate Program Date Time backward
+                  // Since it is first program date time occurrence we're assuming that
+                  // all this.manifest.segments have no program date time info
+                  this.manifest.segments.reduceRight((programDateTime, segment) => {
+                    segment.programDateTime = programDateTime - segment.duration * 1000;
+                    return segment.programDateTime;
+                  }, this.lastProgramDateTime);
+                }
+              },
+              targetduration() {
+                if (!isFinite(entry.duration) || entry.duration < 0) {
+                  this.trigger('warn', {
+                    message: 'ignoring invalid target duration: ' + entry.duration
+                  });
+                  return;
+                }
+                this.manifest.targetDuration = entry.duration;
+                setHoldBack.call(this, this.manifest);
+              },
+              start() {
+                if (!entry.attributes || isNaN(entry.attributes['TIME-OFFSET'])) {
+                  this.trigger('warn', {
+                    message: 'ignoring start declaration without appropriate attribute list'
+                  });
+                  return;
+                }
+                this.manifest.start = {
+                  timeOffset: entry.attributes['TIME-OFFSET'],
+                  precise: entry.attributes.PRECISE
+                };
+              },
+              'cue-out'() {
+                currentUri.cueOut = entry.data;
+              },
+              'cue-out-cont'() {
+                currentUri.cueOutCont = entry.data;
+              },
+              'cue-in'() {
+                currentUri.cueIn = entry.data;
+              },
+              'skip'() {
+                this.manifest.skip = camelCaseKeys(entry.attributes);
+                this.warnOnMissingAttributes_('#EXT-X-SKIP', entry.attributes, ['SKIPPED-SEGMENTS']);
+              },
+              'part'() {
+                hasParts = true; // parts are always specifed before a segment
+
+                const segmentIndex = this.manifest.segments.length;
+                const part = camelCaseKeys(entry.attributes);
+                currentUri.parts = currentUri.parts || [];
+                currentUri.parts.push(part);
+                if (part.byterange) {
+                  if (!part.byterange.hasOwnProperty('offset')) {
+                    part.byterange.offset = lastPartByterangeEnd;
+                  }
+                  lastPartByterangeEnd = part.byterange.offset + part.byterange.length;
+                }
+                const partIndex = currentUri.parts.length - 1;
+                this.warnOnMissingAttributes_(`#EXT-X-PART #${partIndex} for segment #${segmentIndex}`, entry.attributes, ['URI', 'DURATION']);
+                if (this.manifest.renditionReports) {
+                  this.manifest.renditionReports.forEach((r, i) => {
+                    if (!r.hasOwnProperty('lastPart')) {
+                      this.trigger('warn', {
+                        message: `#EXT-X-RENDITION-REPORT #${i} lacks required attribute(s): LAST-PART`
+                      });
+                    }
+                  });
+                }
+              },
+              'server-control'() {
+                const attrs = this.manifest.serverControl = camelCaseKeys(entry.attributes);
+                if (!attrs.hasOwnProperty('canBlockReload')) {
+                  attrs.canBlockReload = false;
+                  this.trigger('info', {
+                    message: '#EXT-X-SERVER-CONTROL defaulting CAN-BLOCK-RELOAD to false'
+                  });
+                }
+                setHoldBack.call(this, this.manifest);
+                if (attrs.canSkipDateranges && !attrs.hasOwnProperty('canSkipUntil')) {
+                  this.trigger('warn', {
+                    message: '#EXT-X-SERVER-CONTROL lacks required attribute CAN-SKIP-UNTIL which is required when CAN-SKIP-DATERANGES is set'
+                  });
+                }
+              },
+              'preload-hint'() {
+                // parts are always specifed before a segment
+                const segmentIndex = this.manifest.segments.length;
+                const hint = camelCaseKeys(entry.attributes);
+                const isPart = hint.type && hint.type === 'PART';
+                currentUri.preloadHints = currentUri.preloadHints || [];
+                currentUri.preloadHints.push(hint);
+                if (hint.byterange) {
+                  if (!hint.byterange.hasOwnProperty('offset')) {
+                    // use last part byterange end or zero if not a part.
+                    hint.byterange.offset = isPart ? lastPartByterangeEnd : 0;
+                    if (isPart) {
+                      lastPartByterangeEnd = hint.byterange.offset + hint.byterange.length;
+                    }
+                  }
+                }
+                const index = currentUri.preloadHints.length - 1;
+                this.warnOnMissingAttributes_(`#EXT-X-PRELOAD-HINT #${index} for segment #${segmentIndex}`, entry.attributes, ['TYPE', 'URI']);
+                if (!hint.type) {
+                  return;
+                } // search through all preload hints except for the current one for
+                // a duplicate type.
+
+                for (let i = 0; i < currentUri.preloadHints.length - 1; i++) {
+                  const otherHint = currentUri.preloadHints[i];
+                  if (!otherHint.type) {
+                    continue;
+                  }
+                  if (otherHint.type === hint.type) {
+                    this.trigger('warn', {
+                      message: `#EXT-X-PRELOAD-HINT #${index} for segment #${segmentIndex} has the same TYPE ${hint.type} as preload hint #${i}`
+                    });
+                  }
+                }
+              },
+              'rendition-report'() {
+                const report = camelCaseKeys(entry.attributes);
+                this.manifest.renditionReports = this.manifest.renditionReports || [];
+                this.manifest.renditionReports.push(report);
+                const index = this.manifest.renditionReports.length - 1;
+                const required = ['LAST-MSN', 'URI'];
+                if (hasParts) {
+                  required.push('LAST-PART');
+                }
+                this.warnOnMissingAttributes_(`#EXT-X-RENDITION-REPORT #${index}`, entry.attributes, required);
+              },
+              'part-inf'() {
+                this.manifest.partInf = camelCaseKeys(entry.attributes);
+                this.warnOnMissingAttributes_('#EXT-X-PART-INF', entry.attributes, ['PART-TARGET']);
+                if (this.manifest.partInf.partTarget) {
+                  this.manifest.partTargetDuration = this.manifest.partInf.partTarget;
+                }
+                setHoldBack.call(this, this.manifest);
+              },
+              'daterange'() {
+                this.manifest.dateRanges.push(camelCaseKeys(entry.attributes));
+                const index = this.manifest.dateRanges.length - 1;
+                this.warnOnMissingAttributes_(`#EXT-X-DATERANGE #${index}`, entry.attributes, ['ID', 'START-DATE']);
+                const dateRange = this.manifest.dateRanges[index];
+                if (dateRange.endDate && dateRange.startDate && new Date(dateRange.endDate) < new Date(dateRange.startDate)) {
+                  this.trigger('warn', {
+                    message: 'EXT-X-DATERANGE END-DATE must be equal to or later than the value of the START-DATE'
+                  });
+                }
+                if (dateRange.duration && dateRange.duration < 0) {
+                  this.trigger('warn', {
+                    message: 'EXT-X-DATERANGE DURATION must not be negative'
+                  });
+                }
+                if (dateRange.plannedDuration && dateRange.plannedDuration < 0) {
+                  this.trigger('warn', {
+                    message: 'EXT-X-DATERANGE PLANNED-DURATION must not be negative'
+                  });
+                }
+                const endOnNextYes = !!dateRange.endOnNext;
+                if (endOnNextYes && !dateRange.class) {
+                  this.trigger('warn', {
+                    message: 'EXT-X-DATERANGE with an END-ON-NEXT=YES attribute must have a CLASS attribute'
+                  });
+                }
+                if (endOnNextYes && (dateRange.duration || dateRange.endDate)) {
+                  this.trigger('warn', {
+                    message: 'EXT-X-DATERANGE with an END-ON-NEXT=YES attribute must not contain DURATION or END-DATE attributes'
+                  });
+                }
+                if (dateRange.duration && dateRange.endDate) {
+                  const startDate = dateRange.startDate;
+                  const newDateInSeconds = startDate.getTime() + dateRange.duration * 1000;
+                  this.manifest.dateRanges[index].endDate = new Date(newDateInSeconds);
+                }
+                if (!dateRangeTags[dateRange.id]) {
+                  dateRangeTags[dateRange.id] = dateRange;
+                } else {
+                  for (const attribute in dateRangeTags[dateRange.id]) {
+                    if (!!dateRange[attribute] && JSON.stringify(dateRangeTags[dateRange.id][attribute]) !== JSON.stringify(dateRange[attribute])) {
+                      this.trigger('warn', {
+                        message: 'EXT-X-DATERANGE tags with the same ID in a playlist must have the same attributes values'
+                      });
+                      break;
+                    }
+                  } // if tags with the same ID do not have conflicting attributes, merge them
+
+                  const dateRangeWithSameId = this.manifest.dateRanges.findIndex(dateRangeToFind => dateRangeToFind.id === dateRange.id);
+                  this.manifest.dateRanges[dateRangeWithSameId] = _extends$1(this.manifest.dateRanges[dateRangeWithSameId], dateRange);
+                  dateRangeTags[dateRange.id] = _extends$1(dateRangeTags[dateRange.id], dateRange); // after merging, delete the duplicate dateRange that was added last
+
+                  this.manifest.dateRanges.pop();
+                }
+              },
+              'independent-segments'() {
+                this.manifest.independentSegments = true;
+              },
+              'content-steering'() {
+                this.manifest.contentSteering = camelCaseKeys(entry.attributes);
+                this.warnOnMissingAttributes_('#EXT-X-CONTENT-STEERING', entry.attributes, ['SERVER-URI']);
+              }
+            })[entry.tagType] || noop).call(self);
+          },
+          uri() {
+            currentUri.uri = entry.uri;
+            uris.push(currentUri); // if no explicit duration was declared, use the target duration
+
+            if (this.manifest.targetDuration && !('duration' in currentUri)) {
+              this.trigger('warn', {
+                message: 'defaulting segment duration to the target duration'
+              });
+              currentUri.duration = this.manifest.targetDuration;
+            } // annotate with encryption information, if necessary
+
+            if (key) {
+              currentUri.key = key;
+            }
+            currentUri.timeline = currentTimeline; // annotate with initialization segment information, if necessary
+
+            if (currentMap) {
+              currentUri.map = currentMap;
+            } // reset the last byterange end as it needs to be 0 between parts
+
+            lastPartByterangeEnd = 0; // Once we have at least one program date time we can always extrapolate it forward
+
+            if (this.lastProgramDateTime !== null) {
+              currentUri.programDateTime = this.lastProgramDateTime;
+              this.lastProgramDateTime += currentUri.duration * 1000;
+            } // prepare for the next URI
+
+            currentUri = {};
+          },
+          comment() {// comments are not important for playback
+          },
+          custom() {
+            // if this is segment-level data attach the output to the segment
+            if (entry.segment) {
+              currentUri.custom = currentUri.custom || {};
+              currentUri.custom[entry.customType] = entry.data; // if this is manifest-level data attach to the top level manifest object
+            } else {
+              this.manifest.custom = this.manifest.custom || {};
+              this.manifest.custom[entry.customType] = entry.data;
+            }
+          }
+        })[entry.type].call(self);
+      });
+    }
+    warnOnMissingAttributes_(identifier, attributes, required) {
+      const missing = [];
+      required.forEach(function (key) {
+        if (!attributes.hasOwnProperty(key)) {
+          missing.push(key);
+        }
+      });
+      if (missing.length) {
+        this.trigger('warn', {
+          message: `${identifier} lacks required attribute(s): ${missing.join(', ')}`
+        });
+      }
+    }
+    /**
+     * Parse the input string and update the manifest object.
+     *
+     * @param {string} chunk a potentially incomplete portion of the manifest
+     */
+
+    push(chunk) {
+      this.lineStream.push(chunk);
+    }
+    /**
+     * Flush any remaining input. This can be handy if the last line of an M3U8
+     * manifest did not contain a trailing newline but the file has been
+     * completely received.
+     */
+
+    end() {
+      // flush any buffered input
+      this.lineStream.push('\n');
+      if (this.manifest.dateRanges.length && this.lastProgramDateTime === null) {
+        this.trigger('warn', {
+          message: 'A playlist with EXT-X-DATERANGE tag must contain atleast one EXT-X-PROGRAM-DATE-TIME tag'
+        });
+      }
+      this.lastProgramDateTime = null;
+      this.trigger('end');
+    }
+    /**
+     * Add an additional parser for non-standard tags
+     *
+     * @param {Object}   options              a map of options for the added parser
+     * @param {RegExp}   options.expression   a regular expression to match the custom header
+     * @param {string}   options.customType   the custom type to register to the output
+     * @param {Function} [options.dataParser] function to parse the line into an object
+     * @param {boolean}  [options.segment]    should tag data be attached to the segment object
+     */
+
+    addParser(options) {
+      this.parseStream.addParser(options);
+    }
+    /**
+     * Add a custom header mapper
+     *
+     * @param {Object}   options
+     * @param {RegExp}   options.expression   a regular expression to match the custom header
+     * @param {Function} options.map          function to translate tag into a different tag
+     */
+
+    addTagMapper(options) {
+      this.parseStream.addTagMapper(options);
+    }
+  }
+
+  var regexs = {
+    // to determine mime types
+    mp4: /^(av0?1|avc0?[1234]|vp0?9|flac|opus|mp3|mp4a|mp4v|stpp.ttml.im1t)/,
+    webm: /^(vp0?[89]|av0?1|opus|vorbis)/,
+    ogg: /^(vp0?[89]|theora|flac|opus|vorbis)/,
+    // to determine if a codec is audio or video
+    video: /^(av0?1|avc0?[1234]|vp0?[89]|hvc1|hev1|theora|mp4v)/,
+    audio: /^(mp4a|flac|vorbis|opus|ac-[34]|ec-3|alac|mp3|speex|aac)/,
+    text: /^(stpp.ttml.im1t)/,
+    // mux.js support regex
+    muxerVideo: /^(avc0?1)/,
+    muxerAudio: /^(mp4a)/,
+    // match nothing as muxer does not support text right now.
+    // there cannot never be a character before the start of a string
+    // so this matches nothing.
+    muxerText: /a^/
+  };
+  var mediaTypes = ['video', 'audio', 'text'];
+  var upperMediaTypes = ['Video', 'Audio', 'Text'];
+  /**
+   * Replace the old apple-style `avc1.<dd>.<dd>` codec string with the standard
+   * `avc1.<hhhhhh>`
+   *
+   * @param {string} codec
+   *        Codec string to translate
+   * @return {string}
+   *         The translated codec string
+   */
+
+  var translateLegacyCodec = function translateLegacyCodec(codec) {
+    if (!codec) {
+      return codec;
+    }
+    return codec.replace(/avc1\.(\d+)\.(\d+)/i, function (orig, profile, avcLevel) {
+      var profileHex = ('00' + Number(profile).toString(16)).slice(-2);
+      var avcLevelHex = ('00' + Number(avcLevel).toString(16)).slice(-2);
+      return 'avc1.' + profileHex + '00' + avcLevelHex;
+    });
+  };
+  /**
+   * @typedef {Object} ParsedCodecInfo
+   * @property {number} codecCount
+   *           Number of codecs parsed
+   * @property {string} [videoCodec]
+   *           Parsed video codec (if found)
+   * @property {string} [videoObjectTypeIndicator]
+   *           Video object type indicator (if found)
+   * @property {string|null} audioProfile
+   *           Audio profile
+   */
+
+  /**
+   * Parses a codec string to retrieve the number of codecs specified, the video codec and
+   * object type indicator, and the audio profile.
+   *
+   * @param {string} [codecString]
+   *        The codec string to parse
+   * @return {ParsedCodecInfo}
+   *         Parsed codec info
+   */
+
+  var parseCodecs = function parseCodecs(codecString) {
+    if (codecString === void 0) {
+      codecString = '';
+    }
+    var codecs = codecString.split(',');
+    var result = [];
+    codecs.forEach(function (codec) {
+      codec = codec.trim();
+      var codecType;
+      mediaTypes.forEach(function (name) {
+        var match = regexs[name].exec(codec.toLowerCase());
+        if (!match || match.length <= 1) {
+          return;
+        }
+        codecType = name; // maintain codec case
+
+        var type = codec.substring(0, match[1].length);
+        var details = codec.replace(type, '');
+        result.push({
+          type: type,
+          details: details,
+          mediaType: name
+        });
+      });
+      if (!codecType) {
+        result.push({
+          type: codec,
+          details: '',
+          mediaType: 'unknown'
+        });
+      }
+    });
+    return result;
+  };
+  /**
+   * Returns a ParsedCodecInfo object for the default alternate audio playlist if there is
+   * a default alternate audio playlist for the provided audio group.
+   *
+   * @param {Object} master
+   *        The master playlist
+   * @param {string} audioGroupId
+   *        ID of the audio group for which to find the default codec info
+   * @return {ParsedCodecInfo}
+   *         Parsed codec info
+   */
+
+  var codecsFromDefault = function codecsFromDefault(master, audioGroupId) {
+    if (!master.mediaGroups.AUDIO || !audioGroupId) {
+      return null;
+    }
+    var audioGroup = master.mediaGroups.AUDIO[audioGroupId];
+    if (!audioGroup) {
+      return null;
+    }
+    for (var name in audioGroup) {
+      var audioType = audioGroup[name];
+      if (audioType.default && audioType.playlists) {
+        // codec should be the same for all playlists within the audio type
+        return parseCodecs(audioType.playlists[0].attributes.CODECS);
+      }
+    }
+    return null;
+  };
+  var isAudioCodec = function isAudioCodec(codec) {
+    if (codec === void 0) {
+      codec = '';
+    }
+    return regexs.audio.test(codec.trim().toLowerCase());
+  };
+  var isTextCodec = function isTextCodec(codec) {
+    if (codec === void 0) {
+      codec = '';
+    }
+    return regexs.text.test(codec.trim().toLowerCase());
+  };
+  var getMimeForCodec = function getMimeForCodec(codecString) {
+    if (!codecString || typeof codecString !== 'string') {
+      return;
+    }
+    var codecs = codecString.toLowerCase().split(',').map(function (c) {
+      return translateLegacyCodec(c.trim());
+    }); // default to video type
+
+    var type = 'video'; // only change to audio type if the only codec we have is
+    // audio
+
+    if (codecs.length === 1 && isAudioCodec(codecs[0])) {
+      type = 'audio';
+    } else if (codecs.length === 1 && isTextCodec(codecs[0])) {
+      // text uses application/<container> for now
+      type = 'application';
+    } // default the container to mp4
+
+    var container = 'mp4'; // every codec must be able to go into the container
+    // for that container to be the correct one
+
+    if (codecs.every(function (c) {
+      return regexs.mp4.test(c);
+    })) {
+      container = 'mp4';
+    } else if (codecs.every(function (c) {
+      return regexs.webm.test(c);
+    })) {
+      container = 'webm';
+    } else if (codecs.every(function (c) {
+      return regexs.ogg.test(c);
+    })) {
+      container = 'ogg';
+    }
+    return type + "/" + container + ";codecs=\"" + codecString + "\"";
+  };
+  var browserSupportsCodec = function browserSupportsCodec(codecString) {
+    if (codecString === void 0) {
+      codecString = '';
+    }
+    return window.MediaSource && window.MediaSource.isTypeSupported && window.MediaSource.isTypeSupported(getMimeForCodec(codecString)) || false;
+  };
+  var muxerSupportsCodec = function muxerSupportsCodec(codecString) {
+    if (codecString === void 0) {
+      codecString = '';
+    }
+    return codecString.toLowerCase().split(',').every(function (codec) {
+      codec = codec.trim(); // any match is supported.
+
+      for (var i = 0; i < upperMediaTypes.length; i++) {
+        var type = upperMediaTypes[i];
+        if (regexs["muxer" + type].test(codec)) {
+          return true;
+        }
+      }
+      return false;
+    });
+  };
+  var DEFAULT_AUDIO_CODEC = 'mp4a.40.2';
+  var DEFAULT_VIDEO_CODEC = 'avc1.4d400d';
+
+  var MPEGURL_REGEX = /^(audio|video|application)\/(x-|vnd\.apple\.)?mpegurl/i;
+  var DASH_REGEX = /^application\/dash\+xml/i;
+  /**
+   * Returns a string that describes the type of source based on a video source object's
+   * media type.
+   *
+   * @see {@link https://dev.w3.org/html5/pf-summary/video.html#dom-source-type|Source Type}
+   *
+   * @param {string} type
+   *        Video source object media type
+   * @return {('hls'|'dash'|'vhs-json'|null)}
+   *         VHS source type string
+   */
+
+  var simpleTypeFromSourceType = function simpleTypeFromSourceType(type) {
+    if (MPEGURL_REGEX.test(type)) {
+      return 'hls';
+    }
+    if (DASH_REGEX.test(type)) {
+      return 'dash';
+    } // Denotes the special case of a manifest object passed to http-streaming instead of a
+    // source URL.
+    //
+    // See https://en.wikipedia.org/wiki/Media_type for details on specifying media types.
+    //
+    // In this case, vnd stands for vendor, video.js for the organization, VHS for this
+    // project, and the +json suffix identifies the structure of the media type.
+
+    if (type === 'application/vnd.videojs.vhs+json') {
+      return 'vhs-json';
+    }
+    return null;
+  };
+
+  // const log2 = Math.log2 ? Math.log2 : (x) => (Math.log(x) / Math.log(2));
+  // we used to do this with log2 but BigInt does not support builtin math
+  // Math.ceil(log2(x));
+
+  var countBits = function countBits(x) {
+    return x.toString(2).length;
+  }; // count the number of whole bytes it would take to represent a number
+
+  var countBytes = function countBytes(x) {
+    return Math.ceil(countBits(x) / 8);
+  };
+  var isArrayBufferView = function isArrayBufferView(obj) {
+    if (ArrayBuffer.isView === 'function') {
+      return ArrayBuffer.isView(obj);
+    }
+    return obj && obj.buffer instanceof ArrayBuffer;
+  };
+  var isTypedArray = function isTypedArray(obj) {
+    return isArrayBufferView(obj);
+  };
+  var toUint8 = function toUint8(bytes) {
+    if (bytes instanceof Uint8Array) {
+      return bytes;
+    }
+    if (!Array.isArray(bytes) && !isTypedArray(bytes) && !(bytes instanceof ArrayBuffer)) {
+      // any non-number or NaN leads to empty uint8array
+      // eslint-disable-next-line
+      if (typeof bytes !== 'number' || typeof bytes === 'number' && bytes !== bytes) {
+        bytes = 0;
+      } else {
+        bytes = [bytes];
+      }
+    }
+    return new Uint8Array(bytes && bytes.buffer || bytes, bytes && bytes.byteOffset || 0, bytes && bytes.byteLength || 0);
+  };
+  var BigInt = window.BigInt || Number;
+  var BYTE_TABLE = [BigInt('0x1'), BigInt('0x100'), BigInt('0x10000'), BigInt('0x1000000'), BigInt('0x100000000'), BigInt('0x10000000000'), BigInt('0x1000000000000'), BigInt('0x100000000000000'), BigInt('0x10000000000000000')];
+  (function () {
+    var a = new Uint16Array([0xFFCC]);
+    var b = new Uint8Array(a.buffer, a.byteOffset, a.byteLength);
+    if (b[0] === 0xFF) {
+      return 'big';
+    }
+    if (b[0] === 0xCC) {
+      return 'little';
+    }
+    return 'unknown';
+  })();
+  var bytesToNumber = function bytesToNumber(bytes, _temp) {
+    var _ref = _temp === void 0 ? {} : _temp,
+      _ref$signed = _ref.signed,
+      signed = _ref$signed === void 0 ? false : _ref$signed,
+      _ref$le = _ref.le,
+      le = _ref$le === void 0 ? false : _ref$le;
+    bytes = toUint8(bytes);
+    var fn = le ? 'reduce' : 'reduceRight';
+    var obj = bytes[fn] ? bytes[fn] : Array.prototype[fn];
+    var number = obj.call(bytes, function (total, byte, i) {
+      var exponent = le ? i : Math.abs(i + 1 - bytes.length);
+      return total + BigInt(byte) * BYTE_TABLE[exponent];
+    }, BigInt(0));
+    if (signed) {
+      var max = BYTE_TABLE[bytes.length] / BigInt(2) - BigInt(1);
+      number = BigInt(number);
+      if (number > max) {
+        number -= max;
+        number -= max;
+        number -= BigInt(2);
+      }
+    }
+    return Number(number);
+  };
+  var numberToBytes = function numberToBytes(number, _temp2) {
+    var _ref2 = _temp2 === void 0 ? {} : _temp2,
+      _ref2$le = _ref2.le,
+      le = _ref2$le === void 0 ? false : _ref2$le;
+
+    // eslint-disable-next-line
+    if (typeof number !== 'bigint' && typeof number !== 'number' || typeof number === 'number' && number !== number) {
+      number = 0;
+    }
+    number = BigInt(number);
+    var byteCount = countBytes(number);
+    var bytes = new Uint8Array(new ArrayBuffer(byteCount));
+    for (var i = 0; i < byteCount; i++) {
+      var byteIndex = le ? i : Math.abs(i + 1 - bytes.length);
+      bytes[byteIndex] = Number(number / BYTE_TABLE[i] & BigInt(0xFF));
+      if (number < 0) {
+        bytes[byteIndex] = Math.abs(~bytes[byteIndex]);
+        bytes[byteIndex] -= i === 0 ? 1 : 2;
+      }
+    }
+    return bytes;
+  };
+  var stringToBytes = function stringToBytes(string, stringIsBytes) {
+    if (typeof string !== 'string' && string && typeof string.toString === 'function') {
+      string = string.toString();
+    }
+    if (typeof string !== 'string') {
+      return new Uint8Array();
+    } // If the string already is bytes, we don't have to do this
+    // otherwise we do this so that we split multi length characters
+    // into individual bytes
+
+    if (!stringIsBytes) {
+      string = unescape(encodeURIComponent(string));
+    }
+    var view = new Uint8Array(string.length);
+    for (var i = 0; i < string.length; i++) {
+      view[i] = string.charCodeAt(i);
+    }
+    return view;
+  };
+  var concatTypedArrays = function concatTypedArrays() {
+    for (var _len = arguments.length, buffers = new Array(_len), _key = 0; _key < _len; _key++) {
+      buffers[_key] = arguments[_key];
+    }
+    buffers = buffers.filter(function (b) {
+      return b && (b.byteLength || b.length) && typeof b !== 'string';
+    });
+    if (buffers.length <= 1) {
+      // for 0 length we will return empty uint8
+      // for 1 length we return the first uint8
+      return toUint8(buffers[0]);
+    }
+    var totalLen = buffers.reduce(function (total, buf, i) {
+      return total + (buf.byteLength || buf.length);
+    }, 0);
+    var tempBuffer = new Uint8Array(totalLen);
+    var offset = 0;
+    buffers.forEach(function (buf) {
+      buf = toUint8(buf);
+      tempBuffer.set(buf, offset);
+      offset += buf.byteLength;
+    });
+    return tempBuffer;
+  };
+  /**
+   * Check if the bytes "b" are contained within bytes "a".
+   *
+   * @param {Uint8Array|Array} a
+   *        Bytes to check in
+   *
+   * @param {Uint8Array|Array} b
+   *        Bytes to check for
+   *
+   * @param {Object} options
+   *        options
+   *
+   * @param {Array|Uint8Array} [offset=0]
+   *        offset to use when looking at bytes in a
+   *
+   * @param {Array|Uint8Array} [mask=[]]
+   *        mask to use on bytes before comparison.
+   *
+   * @return {boolean}
+   *         If all bytes in b are inside of a, taking into account
+   *         bit masks.
+   */
+
+  var bytesMatch = function bytesMatch(a, b, _temp3) {
+    var _ref3 = _temp3 === void 0 ? {} : _temp3,
+      _ref3$offset = _ref3.offset,
+      offset = _ref3$offset === void 0 ? 0 : _ref3$offset,
+      _ref3$mask = _ref3.mask,
+      mask = _ref3$mask === void 0 ? [] : _ref3$mask;
+    a = toUint8(a);
+    b = toUint8(b); // ie 11 does not support uint8 every
+
+    var fn = b.every ? b.every : Array.prototype.every;
+    return b.length && a.length - offset >= b.length &&
+    // ie 11 doesn't support every on uin8
+    fn.call(b, function (bByte, i) {
+      var aByte = mask[i] ? mask[i] & a[offset + i] : a[offset + i];
+      return bByte === aByte;
+    });
+  };
+
+  /**
+   * Loops through all supported media groups in master and calls the provided
+   * callback for each group
+   *
+   * @param {Object} master
+   *        The parsed master manifest object
+   * @param {string[]} groups
+   *        The media groups to call the callback for
+   * @param {Function} callback
+   *        Callback to call for each media group
+   */
+  var forEachMediaGroup$1 = function forEachMediaGroup(master, groups, callback) {
+    groups.forEach(function (mediaType) {
+      for (var groupKey in master.mediaGroups[mediaType]) {
+        for (var labelKey in master.mediaGroups[mediaType][groupKey]) {
+          var mediaProperties = master.mediaGroups[mediaType][groupKey][labelKey];
+          callback(mediaProperties, mediaType, groupKey, labelKey);
+        }
+      }
+    });
+  };
+
+  var atob = function atob(s) {
+    return window.atob ? window.atob(s) : Buffer.from(s, 'base64').toString('binary');
+  };
+  function decodeB64ToUint8Array(b64Text) {
+    var decodedString = atob(b64Text);
+    var array = new Uint8Array(decodedString.length);
+    for (var i = 0; i < decodedString.length; i++) {
+      array[i] = decodedString.charCodeAt(i);
+    }
+    return array;
+  }
+
+  /**
+   * Ponyfill for `Array.prototype.find` which is only available in ES6 runtimes.
+   *
+   * Works with anything that has a `length` property and index access properties, including NodeList.
+   *
+   * @template {unknown} T
+   * @param {Array<T> | ({length:number, [number]: T})} list
+   * @param {function (item: T, index: number, list:Array<T> | ({length:number, [number]: T})):boolean} predicate
+   * @param {Partial<Pick<ArrayConstructor['prototype'], 'find'>>?} ac `Array.prototype` by default,
+   * 				allows injecting a custom implementation in tests
+   * @returns {T | undefined}
+   *
+   * @see https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/find
+   * @see https://tc39.es/ecma262/multipage/indexed-collections.html#sec-array.prototype.find
+   */
+  function find$1(list, predicate, ac) {
+    if (ac === undefined) {
+      ac = Array.prototype;
+    }
+    if (list && typeof ac.find === 'function') {
+      return ac.find.call(list, predicate);
+    }
+    for (var i = 0; i < list.length; i++) {
+      if (Object.prototype.hasOwnProperty.call(list, i)) {
+        var item = list[i];
+        if (predicate.call(undefined, item, i, list)) {
+          return item;
+        }
+      }
+    }
+  }
+
+  /**
+   * "Shallow freezes" an object to render it immutable.
+   * Uses `Object.freeze` if available,
+   * otherwise the immutability is only in the type.
+   *
+   * Is used to create "enum like" objects.
+   *
+   * @template T
+   * @param {T} object the object to freeze
+   * @param {Pick<ObjectConstructor, 'freeze'> = Object} oc `Object` by default,
+   * 				allows to inject custom object constructor for tests
+   * @returns {Readonly<T>}
+   *
+   * @see https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/freeze
+   */
+  function freeze(object, oc) {
+    if (oc === undefined) {
+      oc = Object;
+    }
+    return oc && typeof oc.freeze === 'function' ? oc.freeze(object) : object;
+  }
+
+  /**
+   * Since we can not rely on `Object.assign` we provide a simplified version
+   * that is sufficient for our needs.
+   *
+   * @param {Object} target
+   * @param {Object | null | undefined} source
+   *
+   * @returns {Object} target
+   * @throws TypeError if target is not an object
+   *
+   * @see https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/assign
+   * @see https://tc39.es/ecma262/multipage/fundamental-objects.html#sec-object.assign
+   */
+  function assign(target, source) {
+    if (target === null || typeof target !== 'object') {
+      throw new TypeError('target is not an object');
+    }
+    for (var key in source) {
+      if (Object.prototype.hasOwnProperty.call(source, key)) {
+        target[key] = source[key];
+      }
+    }
+    return target;
+  }
+
+  /**
+   * All mime types that are allowed as input to `DOMParser.parseFromString`
+   *
+   * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMParser/parseFromString#Argument02 MDN
+   * @see https://html.spec.whatwg.org/multipage/dynamic-markup-insertion.html#domparsersupportedtype WHATWG HTML Spec
+   * @see DOMParser.prototype.parseFromString
+   */
+  var MIME_TYPE = freeze({
+    /**
+     * `text/html`, the only mime type that triggers treating an XML document as HTML.
+     *
+     * @see DOMParser.SupportedType.isHTML
+     * @see https://www.iana.org/assignments/media-types/text/html IANA MimeType registration
+     * @see https://en.wikipedia.org/wiki/HTML Wikipedia
+     * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMParser/parseFromString MDN
+     * @see https://html.spec.whatwg.org/multipage/dynamic-markup-insertion.html#dom-domparser-parsefromstring WHATWG HTML Spec
+     */
+    HTML: 'text/html',
+    /**
+     * Helper method to check a mime type if it indicates an HTML document
+     *
+     * @param {string} [value]
+     * @returns {boolean}
+     *
+     * @see https://www.iana.org/assignments/media-types/text/html IANA MimeType registration
+     * @see https://en.wikipedia.org/wiki/HTML Wikipedia
+     * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMParser/parseFromString MDN
+     * @see https://html.spec.whatwg.org/multipage/dynamic-markup-insertion.html#dom-domparser-parsefromstring 	 */
+    isHTML: function (value) {
+      return value === MIME_TYPE.HTML;
+    },
+    /**
+     * `application/xml`, the standard mime type for XML documents.
+     *
+     * @see https://www.iana.org/assignments/media-types/application/xml IANA MimeType registration
+     * @see https://tools.ietf.org/html/rfc7303#section-9.1 RFC 7303
+     * @see https://en.wikipedia.org/wiki/XML_and_MIME Wikipedia
+     */
+    XML_APPLICATION: 'application/xml',
+    /**
+     * `text/html`, an alias for `application/xml`.
+     *
+     * @see https://tools.ietf.org/html/rfc7303#section-9.2 RFC 7303
+     * @see https://www.iana.org/assignments/media-types/text/xml IANA MimeType registration
+     * @see https://en.wikipedia.org/wiki/XML_and_MIME Wikipedia
+     */
+    XML_TEXT: 'text/xml',
+    /**
+     * `application/xhtml+xml`, indicates an XML document that has the default HTML namespace,
+     * but is parsed as an XML document.
+     *
+     * @see https://www.iana.org/assignments/media-types/application/xhtml+xml IANA MimeType registration
+     * @see https://dom.spec.whatwg.org/#dom-domimplementation-createdocument WHATWG DOM Spec
+     * @see https://en.wikipedia.org/wiki/XHTML Wikipedia
+     */
+    XML_XHTML_APPLICATION: 'application/xhtml+xml',
+    /**
+     * `image/svg+xml`,
+     *
+     * @see https://www.iana.org/assignments/media-types/image/svg+xml IANA MimeType registration
+     * @see https://www.w3.org/TR/SVG11/ W3C SVG 1.1
+     * @see https://en.wikipedia.org/wiki/Scalable_Vector_Graphics Wikipedia
+     */
+    XML_SVG_IMAGE: 'image/svg+xml'
+  });
+
+  /**
+   * Namespaces that are used in this code base.
+   *
+   * @see http://www.w3.org/TR/REC-xml-names
+   */
+  var NAMESPACE$3 = freeze({
+    /**
+     * The XHTML namespace.
+     *
+     * @see http://www.w3.org/1999/xhtml
+     */
+    HTML: 'http://www.w3.org/1999/xhtml',
+    /**
+     * Checks if `uri` equals `NAMESPACE.HTML`.
+     *
+     * @param {string} [uri]
+     *
+     * @see NAMESPACE.HTML
+     */
+    isHTML: function (uri) {
+      return uri === NAMESPACE$3.HTML;
+    },
+    /**
+     * The SVG namespace.
+     *
+     * @see http://www.w3.org/2000/svg
+     */
+    SVG: 'http://www.w3.org/2000/svg',
+    /**
+     * The `xml:` namespace.
+     *
+     * @see http://www.w3.org/XML/1998/namespace
+     */
+    XML: 'http://www.w3.org/XML/1998/namespace',
+    /**
+     * The `xmlns:` namespace
+     *
+     * @see https://www.w3.org/2000/xmlns/
+     */
+    XMLNS: 'http://www.w3.org/2000/xmlns/'
+  });
+  var assign_1 = assign;
+  var find_1 = find$1;
+  var freeze_1 = freeze;
+  var MIME_TYPE_1 = MIME_TYPE;
+  var NAMESPACE_1 = NAMESPACE$3;
+  var conventions = {
+    assign: assign_1,
+    find: find_1,
+    freeze: freeze_1,
+    MIME_TYPE: MIME_TYPE_1,
+    NAMESPACE: NAMESPACE_1
+  };
+
+  var find = conventions.find;
+  var NAMESPACE$2 = conventions.NAMESPACE;
+
+  /**
+   * A prerequisite for `[].filter`, to drop elements that are empty
+   * @param {string} input
+   * @returns {boolean}
+   */
+  function notEmptyString(input) {
+    return input !== '';
+  }
+  /**
+   * @see https://infra.spec.whatwg.org/#split-on-ascii-whitespace
+   * @see https://infra.spec.whatwg.org/#ascii-whitespace
+   *
+   * @param {string} input
+   * @returns {string[]} (can be empty)
+   */
+  function splitOnASCIIWhitespace(input) {
+    // U+0009 TAB, U+000A LF, U+000C FF, U+000D CR, U+0020 SPACE
+    return input ? input.split(/[\t\n\f\r ]+/).filter(notEmptyString) : [];
+  }
+
+  /**
+   * Adds element as a key to current if it is not already present.
+   *
+   * @param {Record<string, boolean | undefined>} current
+   * @param {string} element
+   * @returns {Record<string, boolean | undefined>}
+   */
+  function orderedSetReducer(current, element) {
+    if (!current.hasOwnProperty(element)) {
+      current[element] = true;
+    }
+    return current;
+  }
+
+  /**
+   * @see https://infra.spec.whatwg.org/#ordered-set
+   * @param {string} input
+   * @returns {string[]}
+   */
+  function toOrderedSet(input) {
+    if (!input) return [];
+    var list = splitOnASCIIWhitespace(input);
+    return Object.keys(list.reduce(orderedSetReducer, {}));
+  }
+
+  /**
+   * Uses `list.indexOf` to implement something like `Array.prototype.includes`,
+   * which we can not rely on being available.
+   *
+   * @param {any[]} list
+   * @returns {function(any): boolean}
+   */
+  function arrayIncludes(list) {
+    return function (element) {
+      return list && list.indexOf(element) !== -1;
+    };
+  }
+  function copy(src, dest) {
+    for (var p in src) {
+      if (Object.prototype.hasOwnProperty.call(src, p)) {
+        dest[p] = src[p];
+      }
+    }
+  }
+
+  /**
+  ^\w+\.prototype\.([_\w]+)\s*=\s*((?:.*\{\s*?[\r\n][\s\S]*?^})|\S.*?(?=[;\r\n]));?
+  ^\w+\.prototype\.([_\w]+)\s*=\s*(\S.*?(?=[;\r\n]));?
+   */
+  function _extends(Class, Super) {
+    var pt = Class.prototype;
+    if (!(pt instanceof Super)) {
+      function t() {}
+      t.prototype = Super.prototype;
+      t = new t();
+      copy(pt, t);
+      Class.prototype = pt = t;
+    }
+    if (pt.constructor != Class) {
+      if (typeof Class != 'function') {
+        console.error("unknown Class:" + Class);
+      }
+      pt.constructor = Class;
+    }
+  }
+
+  // Node Types
+  var NodeType = {};
+  var ELEMENT_NODE = NodeType.ELEMENT_NODE = 1;
+  var ATTRIBUTE_NODE = NodeType.ATTRIBUTE_NODE = 2;
+  var TEXT_NODE = NodeType.TEXT_NODE = 3;
+  var CDATA_SECTION_NODE = NodeType.CDATA_SECTION_NODE = 4;
+  var ENTITY_REFERENCE_NODE = NodeType.ENTITY_REFERENCE_NODE = 5;
+  var ENTITY_NODE = NodeType.ENTITY_NODE = 6;
+  var PROCESSING_INSTRUCTION_NODE = NodeType.PROCESSING_INSTRUCTION_NODE = 7;
+  var COMMENT_NODE = NodeType.COMMENT_NODE = 8;
+  var DOCUMENT_NODE = NodeType.DOCUMENT_NODE = 9;
+  var DOCUMENT_TYPE_NODE = NodeType.DOCUMENT_TYPE_NODE = 10;
+  var DOCUMENT_FRAGMENT_NODE = NodeType.DOCUMENT_FRAGMENT_NODE = 11;
+  var NOTATION_NODE = NodeType.NOTATION_NODE = 12;
+
+  // ExceptionCode
+  var ExceptionCode = {};
+  var ExceptionMessage = {};
+  ExceptionCode.INDEX_SIZE_ERR = (ExceptionMessage[1] = "Index size error", 1);
+  ExceptionCode.DOMSTRING_SIZE_ERR = (ExceptionMessage[2] = "DOMString size error", 2);
+  var HIERARCHY_REQUEST_ERR = ExceptionCode.HIERARCHY_REQUEST_ERR = (ExceptionMessage[3] = "Hierarchy request error", 3);
+  ExceptionCode.WRONG_DOCUMENT_ERR = (ExceptionMessage[4] = "Wrong document", 4);
+  ExceptionCode.INVALID_CHARACTER_ERR = (ExceptionMessage[5] = "Invalid character", 5);
+  ExceptionCode.NO_DATA_ALLOWED_ERR = (ExceptionMessage[6] = "No data allowed", 6);
+  ExceptionCode.NO_MODIFICATION_ALLOWED_ERR = (ExceptionMessage[7] = "No modification allowed", 7);
+  var NOT_FOUND_ERR = ExceptionCode.NOT_FOUND_ERR = (ExceptionMessage[8] = "Not found", 8);
+  ExceptionCode.NOT_SUPPORTED_ERR = (ExceptionMessage[9] = "Not supported", 9);
+  var INUSE_ATTRIBUTE_ERR = ExceptionCode.INUSE_ATTRIBUTE_ERR = (ExceptionMessage[10] = "Attribute in use", 10);
+  //level2
+  ExceptionCode.INVALID_STATE_ERR = (ExceptionMessage[11] = "Invalid state", 11);
+  ExceptionCode.SYNTAX_ERR = (ExceptionMessage[12] = "Syntax error", 12);
+  ExceptionCode.INVALID_MODIFICATION_ERR = (ExceptionMessage[13] = "Invalid modification", 13);
+  ExceptionCode.NAMESPACE_ERR = (ExceptionMessage[14] = "Invalid namespace", 14);
+  ExceptionCode.INVALID_ACCESS_ERR = (ExceptionMessage[15] = "Invalid access", 15);
+
+  /**
+   * DOM Level 2
+   * Object DOMException
+   * @see http://www.w3.org/TR/2000/REC-DOM-Level-2-Core-20001113/ecma-script-binding.html
+   * @see http://www.w3.org/TR/REC-DOM-Level-1/ecma-script-language-binding.html
+   */
+  function DOMException(code, message) {
+    if (message instanceof Error) {
+      var error = message;
+    } else {
+      error = this;
+      Error.call(this, ExceptionMessage[code]);
+      this.message = ExceptionMessage[code];
+      if (Error.captureStackTrace) Error.captureStackTrace(this, DOMException);
+    }
+    error.code = code;
+    if (message) this.message = this.message + ": " + message;
+    return error;
+  }
+  DOMException.prototype = Error.prototype;
+  copy(ExceptionCode, DOMException);
+
+  /**
+   * @see http://www.w3.org/TR/2000/REC-DOM-Level-2-Core-20001113/core.html#ID-536297177
+   * The NodeList interface provides the abstraction of an ordered collection of nodes, without defining or constraining how this collection is implemented. NodeList objects in the DOM are live.
+   * The items in the NodeList are accessible via an integral index, starting from 0.
+   */
+  function NodeList() {}
+  NodeList.prototype = {
+    /**
+     * The number of nodes in the list. The range of valid child node indices is 0 to length-1 inclusive.
+     * @standard level1
+     */
+    length: 0,
+    /**
+     * Returns the indexth item in the collection. If index is greater than or equal to the number of nodes in the list, this returns null.
+     * @standard level1
+     * @param index  unsigned long
+     *   Index into the collection.
+     * @return Node
+     * 	The node at the indexth position in the NodeList, or null if that is not a valid index.
+     */
+    item: function (index) {
+      return index >= 0 && index < this.length ? this[index] : null;
+    },
+    toString: function (isHTML, nodeFilter) {
+      for (var buf = [], i = 0; i < this.length; i++) {
+        serializeToString(this[i], buf, isHTML, nodeFilter);
+      }
+      return buf.join('');
+    },
+    /**
+     * @private
+     * @param {function (Node):boolean} predicate
+     * @returns {Node[]}
+     */
+    filter: function (predicate) {
+      return Array.prototype.filter.call(this, predicate);
+    },
+    /**
+     * @private
+     * @param {Node} item
+     * @returns {number}
+     */
+    indexOf: function (item) {
+      return Array.prototype.indexOf.call(this, item);
+    }
+  };
+  function LiveNodeList(node, refresh) {
+    this._node = node;
+    this._refresh = refresh;
+    _updateLiveList(this);
+  }
+  function _updateLiveList(list) {
+    var inc = list._node._inc || list._node.ownerDocument._inc;
+    if (list._inc !== inc) {
+      var ls = list._refresh(list._node);
+      __set__(list, 'length', ls.length);
+      if (!list.$$length || ls.length < list.$$length) {
+        for (var i = ls.length; (i in list); i++) {
+          if (Object.prototype.hasOwnProperty.call(list, i)) {
+            delete list[i];
+          }
+        }
+      }
+      copy(ls, list);
+      list._inc = inc;
+    }
+  }
+  LiveNodeList.prototype.item = function (i) {
+    _updateLiveList(this);
+    return this[i] || null;
+  };
+  _extends(LiveNodeList, NodeList);
+
+  /**
+   * Objects implementing the NamedNodeMap interface are used
+   * to represent collections of nodes that can be accessed by name.
+   * Note that NamedNodeMap does not inherit from NodeList;
+   * NamedNodeMaps are not maintained in any particular order.
+   * Objects contained in an object implementing NamedNodeMap may also be accessed by an ordinal index,
+   * but this is simply to allow convenient enumeration of the contents of a NamedNodeMap,
+   * and does not imply that the DOM specifies an order to these Nodes.
+   * NamedNodeMap objects in the DOM are live.
+   * used for attributes or DocumentType entities
+   */
+  function NamedNodeMap() {}
+  function _findNodeIndex(list, node) {
+    var i = list.length;
+    while (i--) {
+      if (list[i] === node) {
+        return i;
+      }
+    }
+  }
+  function _addNamedNode(el, list, newAttr, oldAttr) {
+    if (oldAttr) {
+      list[_findNodeIndex(list, oldAttr)] = newAttr;
+    } else {
+      list[list.length++] = newAttr;
+    }
+    if (el) {
+      newAttr.ownerElement = el;
+      var doc = el.ownerDocument;
+      if (doc) {
+        oldAttr && _onRemoveAttribute(doc, el, oldAttr);
+        _onAddAttribute(doc, el, newAttr);
+      }
+    }
+  }
+  function _removeNamedNode(el, list, attr) {
+    //console.log('remove attr:'+attr)
+    var i = _findNodeIndex(list, attr);
+    if (i >= 0) {
+      var lastIndex = list.length - 1;
+      while (i < lastIndex) {
+        list[i] = list[++i];
+      }
+      list.length = lastIndex;
+      if (el) {
+        var doc = el.ownerDocument;
+        if (doc) {
+          _onRemoveAttribute(doc, el, attr);
+          attr.ownerElement = null;
+        }
+      }
+    } else {
+      throw new DOMException(NOT_FOUND_ERR, new Error(el.tagName + '@' + attr));
+    }
+  }
+  NamedNodeMap.prototype = {
+    length: 0,
+    item: NodeList.prototype.item,
+    getNamedItem: function (key) {
+      //		if(key.indexOf(':')>0 || key == 'xmlns'){
+      //			return null;
+      //		}
+      //console.log()
+      var i = this.length;
+      while (i--) {
+        var attr = this[i];
+        //console.log(attr.nodeName,key)
+        if (attr.nodeName == key) {
+          return attr;
+        }
+      }
+    },
+    setNamedItem: function (attr) {
+      var el = attr.ownerElement;
+      if (el && el != this._ownerElement) {
+        throw new DOMException(INUSE_ATTRIBUTE_ERR);
+      }
+      var oldAttr = this.getNamedItem(attr.nodeName);
+      _addNamedNode(this._ownerElement, this, attr, oldAttr);
+      return oldAttr;
+    },
+    /* returns Node */
+    setNamedItemNS: function (attr) {
+      // raises: WRONG_DOCUMENT_ERR,NO_MODIFICATION_ALLOWED_ERR,INUSE_ATTRIBUTE_ERR
+      var el = attr.ownerElement,
+        oldAttr;
+      if (el && el != this._ownerElement) {
+        throw new DOMException(INUSE_ATTRIBUTE_ERR);
+      }
+      oldAttr = this.getNamedItemNS(attr.namespaceURI, attr.localName);
+      _addNamedNode(this._ownerElement, this, attr, oldAttr);
+      return oldAttr;
+    },
+    /* returns Node */
+    removeNamedItem: function (key) {
+      var attr = this.getNamedItem(key);
+      _removeNamedNode(this._ownerElement, this, attr);
+      return attr;
+    },
+    // raises: NOT_FOUND_ERR,NO_MODIFICATION_ALLOWED_ERR
+
+    //for level2
+    removeNamedItemNS: function (namespaceURI, localName) {
+      var attr = this.getNamedItemNS(namespaceURI, localName);
+      _removeNamedNode(this._ownerElement, this, attr);
+      return attr;
+    },
+    getNamedItemNS: function (namespaceURI, localName) {
+      var i = this.length;
+      while (i--) {
+        var node = this[i];
+        if (node.localName == localName && node.namespaceURI == namespaceURI) {
+          return node;
+        }
+      }
+      return null;
+    }
+  };
+
+  /**
+   * The DOMImplementation interface represents an object providing methods
+   * which are not dependent on any particular document.
+   * Such an object is returned by the `Document.implementation` property.
+   *
+   * __The individual methods describe the differences compared to the specs.__
+   *
+   * @constructor
+   *
+   * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMImplementation MDN
+   * @see https://www.w3.org/TR/REC-DOM-Level-1/level-one-core.html#ID-102161490 DOM Level 1 Core (Initial)
+   * @see https://www.w3.org/TR/DOM-Level-2-Core/core.html#ID-102161490 DOM Level 2 Core
+   * @see https://www.w3.org/TR/DOM-Level-3-Core/core.html#ID-102161490 DOM Level 3 Core
+   * @see https://dom.spec.whatwg.org/#domimplementation DOM Living Standard
+   */
+  function DOMImplementation$1() {}
+  DOMImplementation$1.prototype = {
+    /**
+     * The DOMImplementation.hasFeature() method returns a Boolean flag indicating if a given feature is supported.
+     * The different implementations fairly diverged in what kind of features were reported.
+     * The latest version of the spec settled to force this method to always return true, where the functionality was accurate and in use.
+     *
+     * @deprecated It is deprecated and modern browsers return true in all cases.
+     *
+     * @param {string} feature
+     * @param {string} [version]
+     * @returns {boolean} always true
+     *
+     * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMImplementation/hasFeature MDN
+     * @see https://www.w3.org/TR/REC-DOM-Level-1/level-one-core.html#ID-5CED94D7 DOM Level 1 Core
+     * @see https://dom.spec.whatwg.org/#dom-domimplementation-hasfeature DOM Living Standard
+     */
+    hasFeature: function (feature, version) {
+      return true;
+    },
+    /**
+     * Creates an XML Document object of the specified type with its document element.
+     *
+     * __It behaves slightly different from the description in the living standard__:
+     * - There is no interface/class `XMLDocument`, it returns a `Document` instance.
+     * - `contentType`, `encoding`, `mode`, `origin`, `url` fields are currently not declared.
+     * - this implementation is not validating names or qualified names
+     *   (when parsing XML strings, the SAX parser takes care of that)
+     *
+     * @param {string|null} namespaceURI
+     * @param {string} qualifiedName
+     * @param {DocumentType=null} doctype
+     * @returns {Document}
+     *
+     * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMImplementation/createDocument MDN
+     * @see https://www.w3.org/TR/DOM-Level-2-Core/core.html#Level-2-Core-DOM-createDocument DOM Level 2 Core (initial)
+     * @see https://dom.spec.whatwg.org/#dom-domimplementation-createdocument  DOM Level 2 Core
+     *
+     * @see https://dom.spec.whatwg.org/#validate-and-extract DOM: Validate and extract
+     * @see https://www.w3.org/TR/xml/#NT-NameStartChar XML Spec: Names
+     * @see https://www.w3.org/TR/xml-names/#ns-qualnames XML Namespaces: Qualified names
+     */
+    createDocument: function (namespaceURI, qualifiedName, doctype) {
+      var doc = new Document();
+      doc.implementation = this;
+      doc.childNodes = new NodeList();
+      doc.doctype = doctype || null;
+      if (doctype) {
+        doc.appendChild(doctype);
+      }
+      if (qualifiedName) {
+        var root = doc.createElementNS(namespaceURI, qualifiedName);
+        doc.appendChild(root);
+      }
+      return doc;
+    },
+    /**
+     * Returns a doctype, with the given `qualifiedName`, `publicId`, and `systemId`.
+     *
+     * __This behavior is slightly different from the in the specs__:
+     * - this implementation is not validating names or qualified names
+     *   (when parsing XML strings, the SAX parser takes care of that)
+     *
+     * @param {string} qualifiedName
+     * @param {string} [publicId]
+     * @param {string} [systemId]
+     * @returns {DocumentType} which can either be used with `DOMImplementation.createDocument` upon document creation
+     * 				  or can be put into the document via methods like `Node.insertBefore()` or `Node.replaceChild()`
+     *
+     * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMImplementation/createDocumentType MDN
+     * @see https://www.w3.org/TR/DOM-Level-2-Core/core.html#Level-2-Core-DOM-createDocType DOM Level 2 Core
+     * @see https://dom.spec.whatwg.org/#dom-domimplementation-createdocumenttype DOM Living Standard
+     *
+     * @see https://dom.spec.whatwg.org/#validate-and-extract DOM: Validate and extract
+     * @see https://www.w3.org/TR/xml/#NT-NameStartChar XML Spec: Names
+     * @see https://www.w3.org/TR/xml-names/#ns-qualnames XML Namespaces: Qualified names
+     */
+    createDocumentType: function (qualifiedName, publicId, systemId) {
+      var node = new DocumentType();
+      node.name = qualifiedName;
+      node.nodeName = qualifiedName;
+      node.publicId = publicId || '';
+      node.systemId = systemId || '';
+      return node;
+    }
+  };
+
+  /**
+   * @see http://www.w3.org/TR/2000/REC-DOM-Level-2-Core-20001113/core.html#ID-1950641247
+   */
+
+  function Node() {}
+  Node.prototype = {
+    firstChild: null,
+    lastChild: null,
+    previousSibling: null,
+    nextSibling: null,
+    attributes: null,
+    parentNode: null,
+    childNodes: null,
+    ownerDocument: null,
+    nodeValue: null,
+    namespaceURI: null,
+    prefix: null,
+    localName: null,
+    // Modified in DOM Level 2:
+    insertBefore: function (newChild, refChild) {
+      //raises
+      return _insertBefore(this, newChild, refChild);
+    },
+    replaceChild: function (newChild, oldChild) {
+      //raises
+      _insertBefore(this, newChild, oldChild, assertPreReplacementValidityInDocument);
+      if (oldChild) {
+        this.removeChild(oldChild);
+      }
+    },
+    removeChild: function (oldChild) {
+      return _removeChild(this, oldChild);
+    },
+    appendChild: function (newChild) {
+      return this.insertBefore(newChild, null);
+    },
+    hasChildNodes: function () {
+      return this.firstChild != null;
+    },
+    cloneNode: function (deep) {
+      return cloneNode(this.ownerDocument || this, this, deep);
+    },
+    // Modified in DOM Level 2:
+    normalize: function () {
+      var child = this.firstChild;
+      while (child) {
+        var next = child.nextSibling;
+        if (next && next.nodeType == TEXT_NODE && child.nodeType == TEXT_NODE) {
+          this.removeChild(next);
+          child.appendData(next.data);
+        } else {
+          child.normalize();
+          child = next;
+        }
+      }
+    },
+    // Introduced in DOM Level 2:
+    isSupported: function (feature, version) {
+      return this.ownerDocument.implementation.hasFeature(feature, version);
+    },
+    // Introduced in DOM Level 2:
+    hasAttributes: function () {
+      return this.attributes.length > 0;
+    },
+    /**
+     * Look up the prefix associated to the given namespace URI, starting from this node.
+     * **The default namespace declarations are ignored by this method.**
+     * See Namespace Prefix Lookup for details on the algorithm used by this method.
+     *
+     * _Note: The implementation seems to be incomplete when compared to the algorithm described in the specs._
+     *
+     * @param {string | null} namespaceURI
+     * @returns {string | null}
+     * @see https://www.w3.org/TR/DOM-Level-3-Core/core.html#Node3-lookupNamespacePrefix
+     * @see https://www.w3.org/TR/DOM-Level-3-Core/namespaces-algorithms.html#lookupNamespacePrefixAlgo
+     * @see https://dom.spec.whatwg.org/#dom-node-lookupprefix
+     * @see https://github.com/xmldom/xmldom/issues/322
+     */
+    lookupPrefix: function (namespaceURI) {
+      var el = this;
+      while (el) {
+        var map = el._nsMap;
+        //console.dir(map)
+        if (map) {
+          for (var n in map) {
+            if (Object.prototype.hasOwnProperty.call(map, n) && map[n] === namespaceURI) {
+              return n;
+            }
+          }
+        }
+        el = el.nodeType == ATTRIBUTE_NODE ? el.ownerDocument : el.parentNode;
+      }
+      return null;
+    },
+    // Introduced in DOM Level 3:
+    lookupNamespaceURI: function (prefix) {
+      var el = this;
+      while (el) {
+        var map = el._nsMap;
+        //console.dir(map)
+        if (map) {
+          if (Object.prototype.hasOwnProperty.call(map, prefix)) {
+            return map[prefix];
+          }
+        }
+        el = el.nodeType == ATTRIBUTE_NODE ? el.ownerDocument : el.parentNode;
+      }
+      return null;
+    },
+    // Introduced in DOM Level 3:
+    isDefaultNamespace: function (namespaceURI) {
+      var prefix = this.lookupPrefix(namespaceURI);
+      return prefix == null;
+    }
+  };
+  function _xmlEncoder(c) {
+    return c == '<' && '&lt;' || c == '>' && '&gt;' || c == '&' && '&amp;' || c == '"' && '&quot;' || '&#' + c.charCodeAt() + ';';
+  }
+  copy(NodeType, Node);
+  copy(NodeType, Node.prototype);
+
+  /**
+   * @param callback return true for continue,false for break
+   * @return boolean true: break visit;
+   */
+  function _visitNode(node, callback) {
+    if (callback(node)) {
+      return true;
+    }
+    if (node = node.firstChild) {
+      do {
+        if (_visitNode(node, callback)) {
+          return true;
+        }
+      } while (node = node.nextSibling);
+    }
+  }
+  function Document() {
+    this.ownerDocument = this;
+  }
+  function _onAddAttribute(doc, el, newAttr) {
+    doc && doc._inc++;
+    var ns = newAttr.namespaceURI;
+    if (ns === NAMESPACE$2.XMLNS) {
+      //update namespace
+      el._nsMap[newAttr.prefix ? newAttr.localName : ''] = newAttr.value;
+    }
+  }
+  function _onRemoveAttribute(doc, el, newAttr, remove) {
+    doc && doc._inc++;
+    var ns = newAttr.namespaceURI;
+    if (ns === NAMESPACE$2.XMLNS) {
+      //update namespace
+      delete el._nsMap[newAttr.prefix ? newAttr.localName : ''];
+    }
+  }
+
+  /**
+   * Updates `el.childNodes`, updating the indexed items and it's `length`.
+   * Passing `newChild` means it will be appended.
+   * Otherwise it's assumed that an item has been removed,
+   * and `el.firstNode` and it's `.nextSibling` are used
+   * to walk the current list of child nodes.
+   *
+   * @param {Document} doc
+   * @param {Node} el
+   * @param {Node} [newChild]
+   * @private
+   */
+  function _onUpdateChild(doc, el, newChild) {
+    if (doc && doc._inc) {
+      doc._inc++;
+      //update childNodes
+      var cs = el.childNodes;
+      if (newChild) {
+        cs[cs.length++] = newChild;
+      } else {
+        var child = el.firstChild;
+        var i = 0;
+        while (child) {
+          cs[i++] = child;
+          child = child.nextSibling;
+        }
+        cs.length = i;
+        delete cs[cs.length];
+      }
+    }
+  }
+
+  /**
+   * Removes the connections between `parentNode` and `child`
+   * and any existing `child.previousSibling` or `child.nextSibling`.
+   *
+   * @see https://github.com/xmldom/xmldom/issues/135
+   * @see https://github.com/xmldom/xmldom/issues/145
+   *
+   * @param {Node} parentNode
+   * @param {Node} child
+   * @returns {Node} the child that was removed.
+   * @private
+   */
+  function _removeChild(parentNode, child) {
+    var previous = child.previousSibling;
+    var next = child.nextSibling;
+    if (previous) {
+      previous.nextSibling = next;
+    } else {
+      parentNode.firstChild = next;
+    }
+    if (next) {
+      next.previousSibling = previous;
+    } else {
+      parentNode.lastChild = previous;
+    }
+    child.parentNode = null;
+    child.previousSibling = null;
+    child.nextSibling = null;
+    _onUpdateChild(parentNode.ownerDocument, parentNode);
+    return child;
+  }
+
+  /**
+   * Returns `true` if `node` can be a parent for insertion.
+   * @param {Node} node
+   * @returns {boolean}
+   */
+  function hasValidParentNodeType(node) {
+    return node && (node.nodeType === Node.DOCUMENT_NODE || node.nodeType === Node.DOCUMENT_FRAGMENT_NODE || node.nodeType === Node.ELEMENT_NODE);
+  }
+
+  /**
+   * Returns `true` if `node` can be inserted according to it's `nodeType`.
+   * @param {Node} node
+   * @returns {boolean}
+   */
+  function hasInsertableNodeType(node) {
+    return node && (isElementNode(node) || isTextNode(node) || isDocTypeNode(node) || node.nodeType === Node.DOCUMENT_FRAGMENT_NODE || node.nodeType === Node.COMMENT_NODE || node.nodeType === Node.PROCESSING_INSTRUCTION_NODE);
+  }
+
+  /**
+   * Returns true if `node` is a DOCTYPE node
+   * @param {Node} node
+   * @returns {boolean}
+   */
+  function isDocTypeNode(node) {
+    return node && node.nodeType === Node.DOCUMENT_TYPE_NODE;
+  }
+
+  /**
+   * Returns true if the node is an element
+   * @param {Node} node
+   * @returns {boolean}
+   */
+  function isElementNode(node) {
+    return node && node.nodeType === Node.ELEMENT_NODE;
+  }
+  /**
+   * Returns true if `node` is a text node
+   * @param {Node} node
+   * @returns {boolean}
+   */
+  function isTextNode(node) {
+    return node && node.nodeType === Node.TEXT_NODE;
+  }
+
+  /**
+   * Check if en element node can be inserted before `child`, or at the end if child is falsy,
+   * according to the presence and position of a doctype node on the same level.
+   *
+   * @param {Document} doc The document node
+   * @param {Node} child the node that would become the nextSibling if the element would be inserted
+   * @returns {boolean} `true` if an element can be inserted before child
+   * @private
+   * https://dom.spec.whatwg.org/#concept-node-ensure-pre-insertion-validity
+   */
+  function isElementInsertionPossible(doc, child) {
+    var parentChildNodes = doc.childNodes || [];
+    if (find(parentChildNodes, isElementNode) || isDocTypeNode(child)) {
+      return false;
+    }
+    var docTypeNode = find(parentChildNodes, isDocTypeNode);
+    return !(child && docTypeNode && parentChildNodes.indexOf(docTypeNode) > parentChildNodes.indexOf(child));
+  }
+
+  /**
+   * Check if en element node can be inserted before `child`, or at the end if child is falsy,
+   * according to the presence and position of a doctype node on the same level.
+   *
+   * @param {Node} doc The document node
+   * @param {Node} child the node that would become the nextSibling if the element would be inserted
+   * @returns {boolean} `true` if an element can be inserted before child
+   * @private
+   * https://dom.spec.whatwg.org/#concept-node-ensure-pre-insertion-validity
+   */
+  function isElementReplacementPossible(doc, child) {
+    var parentChildNodes = doc.childNodes || [];
+    function hasElementChildThatIsNotChild(node) {
+      return isElementNode(node) && node !== child;
+    }
+    if (find(parentChildNodes, hasElementChildThatIsNotChild)) {
+      return false;
+    }
+    var docTypeNode = find(parentChildNodes, isDocTypeNode);
+    return !(child && docTypeNode && parentChildNodes.indexOf(docTypeNode) > parentChildNodes.indexOf(child));
+  }
+
+  /**
+   * @private
+   * Steps 1-5 of the checks before inserting and before replacing a child are the same.
+   *
+   * @param {Node} parent the parent node to insert `node` into
+   * @param {Node} node the node to insert
+   * @param {Node=} child the node that should become the `nextSibling` of `node`
+   * @returns {Node}
+   * @throws DOMException for several node combinations that would create a DOM that is not well-formed.
+   * @throws DOMException if `child` is provided but is not a child of `parent`.
+   * @see https://dom.spec.whatwg.org/#concept-node-ensure-pre-insertion-validity
+   * @see https://dom.spec.whatwg.org/#concept-node-replace
+   */
+  function assertPreInsertionValidity1to5(parent, node, child) {
+    // 1. If `parent` is not a Document, DocumentFragment, or Element node, then throw a "HierarchyRequestError" DOMException.
+    if (!hasValidParentNodeType(parent)) {
+      throw new DOMException(HIERARCHY_REQUEST_ERR, 'Unexpected parent node type ' + parent.nodeType);
+    }
+    // 2. If `node` is a host-including inclusive ancestor of `parent`, then throw a "HierarchyRequestError" DOMException.
+    // not implemented!
+    // 3. If `child` is non-null and its parent is not `parent`, then throw a "NotFoundError" DOMException.
+    if (child && child.parentNode !== parent) {
+      throw new DOMException(NOT_FOUND_ERR, 'child not in parent');
+    }
+    if (
+    // 4. If `node` is not a DocumentFragment, DocumentType, Element, or CharacterData node, then throw a "HierarchyRequestError" DOMException.
+    !hasInsertableNodeType(node) ||
+    // 5. If either `node` is a Text node and `parent` is a document,
+    // the sax parser currently adds top level text nodes, this will be fixed in 0.9.0
+    // || (node.nodeType === Node.TEXT_NODE && parent.nodeType === Node.DOCUMENT_NODE)
+    // or `node` is a doctype and `parent` is not a document, then throw a "HierarchyRequestError" DOMException.
+    isDocTypeNode(node) && parent.nodeType !== Node.DOCUMENT_NODE) {
+      throw new DOMException(HIERARCHY_REQUEST_ERR, 'Unexpected node type ' + node.nodeType + ' for parent node type ' + parent.nodeType);
+    }
+  }
+
+  /**
+   * @private
+   * Step 6 of the checks before inserting and before replacing a child are different.
+   *
+   * @param {Document} parent the parent node to insert `node` into
+   * @param {Node} node the node to insert
+   * @param {Node | undefined} child the node that should become the `nextSibling` of `node`
+   * @returns {Node}
+   * @throws DOMException for several node combinations that would create a DOM that is not well-formed.
+   * @throws DOMException if `child` is provided but is not a child of `parent`.
+   * @see https://dom.spec.whatwg.org/#concept-node-ensure-pre-insertion-validity
+   * @see https://dom.spec.whatwg.org/#concept-node-replace
+   */
+  function assertPreInsertionValidityInDocument(parent, node, child) {
+    var parentChildNodes = parent.childNodes || [];
+    var nodeChildNodes = node.childNodes || [];
+
+    // DocumentFragment
+    if (node.nodeType === Node.DOCUMENT_FRAGMENT_NODE) {
+      var nodeChildElements = nodeChildNodes.filter(isElementNode);
+      // If node has more than one element child or has a Text node child.
+      if (nodeChildElements.length > 1 || find(nodeChildNodes, isTextNode)) {
+        throw new DOMException(HIERARCHY_REQUEST_ERR, 'More than one element or text in fragment');
+      }
+      // Otherwise, if `node` has one element child and either `parent` has an element child,
+      // `child` is a doctype, or `child` is non-null and a doctype is following `child`.
+      if (nodeChildElements.length === 1 && !isElementInsertionPossible(parent, child)) {
+        throw new DOMException(HIERARCHY_REQUEST_ERR, 'Element in fragment can not be inserted before doctype');
+      }
+    }
+    // Element
+    if (isElementNode(node)) {
+      // `parent` has an element child, `child` is a doctype,
+      // or `child` is non-null and a doctype is following `child`.
+      if (!isElementInsertionPossible(parent, child)) {
+        throw new DOMException(HIERARCHY_REQUEST_ERR, 'Only one element can be added and only after doctype');
+      }
+    }
+    // DocumentType
+    if (isDocTypeNode(node)) {
+      // `parent` has a doctype child,
+      if (find(parentChildNodes, isDocTypeNode)) {
+        throw new DOMException(HIERARCHY_REQUEST_ERR, 'Only one doctype is allowed');
+      }
+      var parentElementChild = find(parentChildNodes, isElementNode);
+      // `child` is non-null and an element is preceding `child`,
+      if (child && parentChildNodes.indexOf(parentElementChild) < parentChildNodes.indexOf(child)) {
+        throw new DOMException(HIERARCHY_REQUEST_ERR, 'Doctype can only be inserted before an element');
+      }
+      // or `child` is null and `parent` has an element child.
+      if (!child && parentElementChild) {
+        throw new DOMException(HIERARCHY_REQUEST_ERR, 'Doctype can not be appended since element is present');
+      }
+    }
+  }
+
+  /**
+   * @private
+   * Step 6 of the checks before inserting and before replacing a child are different.
+   *
+   * @param {Document} parent the parent node to insert `node` into
+   * @param {Node} node the node to insert
+   * @param {Node | undefined} child the node that should become the `nextSibling` of `node`
+   * @returns {Node}
+   * @throws DOMException for several node combinations that would create a DOM that is not well-formed.
+   * @throws DOMException if `child` is provided but is not a child of `parent`.
+   * @see https://dom.spec.whatwg.org/#concept-node-ensure-pre-insertion-validity
+   * @see https://dom.spec.whatwg.org/#concept-node-replace
+   */
+  function assertPreReplacementValidityInDocument(parent, node, child) {
+    var parentChildNodes = parent.childNodes || [];
+    var nodeChildNodes = node.childNodes || [];
+
+    // DocumentFragment
+    if (node.nodeType === Node.DOCUMENT_FRAGMENT_NODE) {
+      var nodeChildElements = nodeChildNodes.filter(isElementNode);
+      // If `node` has more than one element child or has a Text node child.
+      if (nodeChildElements.length > 1 || find(nodeChildNodes, isTextNode)) {
+        throw new DOMException(HIERARCHY_REQUEST_ERR, 'More than one element or text in fragment');
+      }
+      // Otherwise, if `node` has one element child and either `parent` has an element child that is not `child` or a doctype is following `child`.
+      if (nodeChildElements.length === 1 && !isElementReplacementPossible(parent, child)) {
+        throw new DOMException(HIERARCHY_REQUEST_ERR, 'Element in fragment can not be inserted before doctype');
+      }
+    }
+    // Element
+    if (isElementNode(node)) {
+      // `parent` has an element child that is not `child` or a doctype is following `child`.
+      if (!isElementReplacementPossible(parent, child)) {
+        throw new DOMException(HIERARCHY_REQUEST_ERR, 'Only one element can be added and only after doctype');
+      }
+    }
+    // DocumentType
+    if (isDocTypeNode(node)) {
+      function hasDoctypeChildThatIsNotChild(node) {
+        return isDocTypeNode(node) && node !== child;
+      }
+
+      // `parent` has a doctype child that is not `child`,
+      if (find(parentChildNodes, hasDoctypeChildThatIsNotChild)) {
+        throw new DOMException(HIERARCHY_REQUEST_ERR, 'Only one doctype is allowed');
+      }
+      var parentElementChild = find(parentChildNodes, isElementNode);
+      // or an element is preceding `child`.
+      if (child && parentChildNodes.indexOf(parentElementChild) < parentChildNodes.indexOf(child)) {
+        throw new DOMException(HIERARCHY_REQUEST_ERR, 'Doctype can only be inserted before an element');
+      }
+    }
+  }
+
+  /**
+   * @private
+   * @param {Node} parent the parent node to insert `node` into
+   * @param {Node} node the node to insert
+   * @param {Node=} child the node that should become the `nextSibling` of `node`
+   * @returns {Node}
+   * @throws DOMException for several node combinations that would create a DOM that is not well-formed.
+   * @throws DOMException if `child` is provided but is not a child of `parent`.
+   * @see https://dom.spec.whatwg.org/#concept-node-ensure-pre-insertion-validity
+   */
+  function _insertBefore(parent, node, child, _inDocumentAssertion) {
+    // To ensure pre-insertion validity of a node into a parent before a child, run these steps:
+    assertPreInsertionValidity1to5(parent, node, child);
+
+    // If parent is a document, and any of the statements below, switched on the interface node implements,
+    // are true, then throw a "HierarchyRequestError" DOMException.
+    if (parent.nodeType === Node.DOCUMENT_NODE) {
+      (_inDocumentAssertion || assertPreInsertionValidityInDocument)(parent, node, child);
+    }
+    var cp = node.parentNode;
+    if (cp) {
+      cp.removeChild(node); //remove and update
+    }
+
+    if (node.nodeType === DOCUMENT_FRAGMENT_NODE) {
+      var newFirst = node.firstChild;
+      if (newFirst == null) {
+        return node;
+      }
+      var newLast = node.lastChild;
+    } else {
+      newFirst = newLast = node;
+    }
+    var pre = child ? child.previousSibling : parent.lastChild;
+    newFirst.previousSibling = pre;
+    newLast.nextSibling = child;
+    if (pre) {
+      pre.nextSibling = newFirst;
+    } else {
+      parent.firstChild = newFirst;
+    }
+    if (child == null) {
+      parent.lastChild = newLast;
+    } else {
+      child.previousSibling = newLast;
+    }
+    do {
+      newFirst.parentNode = parent;
+    } while (newFirst !== newLast && (newFirst = newFirst.nextSibling));
+    _onUpdateChild(parent.ownerDocument || parent, parent);
+    //console.log(parent.lastChild.nextSibling == null)
+    if (node.nodeType == DOCUMENT_FRAGMENT_NODE) {
+      node.firstChild = node.lastChild = null;
+    }
+    return node;
+  }
+
+  /**
+   * Appends `newChild` to `parentNode`.
+   * If `newChild` is already connected to a `parentNode` it is first removed from it.
+   *
+   * @see https://github.com/xmldom/xmldom/issues/135
+   * @see https://github.com/xmldom/xmldom/issues/145
+   * @param {Node} parentNode
+   * @param {Node} newChild
+   * @returns {Node}
+   * @private
+   */
+  function _appendSingleChild(parentNode, newChild) {
+    if (newChild.parentNode) {
+      newChild.parentNode.removeChild(newChild);
+    }
+    newChild.parentNode = parentNode;
+    newChild.previousSibling = parentNode.lastChild;
+    newChild.nextSibling = null;
+    if (newChild.previousSibling) {
+      newChild.previousSibling.nextSibling = newChild;
+    } else {
+      parentNode.firstChild = newChild;
+    }
+    parentNode.lastChild = newChild;
+    _onUpdateChild(parentNode.ownerDocument, parentNode, newChild);
+    return newChild;
+  }
+  Document.prototype = {
+    //implementation : null,
+    nodeName: '#document',
+    nodeType: DOCUMENT_NODE,
+    /**
+     * The DocumentType node of the document.
+     *
+     * @readonly
+     * @type DocumentType
+     */
+    doctype: null,
+    documentElement: null,
+    _inc: 1,
+    insertBefore: function (newChild, refChild) {
+      //raises
+      if (newChild.nodeType == DOCUMENT_FRAGMENT_NODE) {
+        var child = newChild.firstChild;
+        while (child) {
+          var next = child.nextSibling;
+          this.insertBefore(child, refChild);
+          child = next;
+        }
+        return newChild;
+      }
+      _insertBefore(this, newChild, refChild);
+      newChild.ownerDocument = this;
+      if (this.documentElement === null && newChild.nodeType === ELEMENT_NODE) {
+        this.documentElement = newChild;
+      }
+      return newChild;
+    },
+    removeChild: function (oldChild) {
+      if (this.documentElement == oldChild) {
+        this.documentElement = null;
+      }
+      return _removeChild(this, oldChild);
+    },
+    replaceChild: function (newChild, oldChild) {
+      //raises
+      _insertBefore(this, newChild, oldChild, assertPreReplacementValidityInDocument);
+      newChild.ownerDocument = this;
+      if (oldChild) {
+        this.removeChild(oldChild);
+      }
+      if (isElementNode(newChild)) {
+        this.documentElement = newChild;
+      }
+    },
+    // Introduced in DOM Level 2:
+    importNode: function (importedNode, deep) {
+      return importNode(this, importedNode, deep);
+    },
+    // Introduced in DOM Level 2:
+    getElementById: function (id) {
+      var rtv = null;
+      _visitNode(this.documentElement, function (node) {
+        if (node.nodeType == ELEMENT_NODE) {
+          if (node.getAttribute('id') == id) {
+            rtv = node;
+            return true;
+          }
+        }
+      });
+      return rtv;
+    },
+    /**
+     * The `getElementsByClassName` method of `Document` interface returns an array-like object
+     * of all child elements which have **all** of the given class name(s).
+     *
+     * Returns an empty list if `classeNames` is an empty string or only contains HTML white space characters.
+     *
+     *
+     * Warning: This is a live LiveNodeList.
+     * Changes in the DOM will reflect in the array as the changes occur.
+     * If an element selected by this array no longer qualifies for the selector,
+     * it will automatically be removed. Be aware of this for iteration purposes.
+     *
+     * @param {string} classNames is a string representing the class name(s) to match; multiple class names are separated by (ASCII-)whitespace
+     *
+     * @see https://developer.mozilla.org/en-US/docs/Web/API/Document/getElementsByClassName
+     * @see https://dom.spec.whatwg.org/#concept-getelementsbyclassname
+     */
+    getElementsByClassName: function (classNames) {
+      var classNamesSet = toOrderedSet(classNames);
+      return new LiveNodeList(this, function (base) {
+        var ls = [];
+        if (classNamesSet.length > 0) {
+          _visitNode(base.documentElement, function (node) {
+            if (node !== base && node.nodeType === ELEMENT_NODE) {
+              var nodeClassNames = node.getAttribute('class');
+              // can be null if the attribute does not exist
+              if (nodeClassNames) {
+                // before splitting and iterating just compare them for the most common case
+                var matches = classNames === nodeClassNames;
+                if (!matches) {
+                  var nodeClassNamesSet = toOrderedSet(nodeClassNames);
+                  matches = classNamesSet.every(arrayIncludes(nodeClassNamesSet));
+                }
+                if (matches) {
+                  ls.push(node);
+                }
+              }
+            }
+          });
+        }
+        return ls;
+      });
+    },
+    //document factory method:
+    createElement: function (tagName) {
+      var node = new Element();
+      node.ownerDocument = this;
+      node.nodeName = tagName;
+      node.tagName = tagName;
+      node.localName = tagName;
+      node.childNodes = new NodeList();
+      var attrs = node.attributes = new NamedNodeMap();
+      attrs._ownerElement = node;
+      return node;
+    },
+    createDocumentFragment: function () {
+      var node = new DocumentFragment();
+      node.ownerDocument = this;
+      node.childNodes = new NodeList();
+      return node;
+    },
+    createTextNode: function (data) {
+      var node = new Text();
+      node.ownerDocument = this;
+      node.appendData(data);
+      return node;
+    },
+    createComment: function (data) {
+      var node = new Comment();
+      node.ownerDocument = this;
+      node.appendData(data);
+      return node;
+    },
+    createCDATASection: function (data) {
+      var node = new CDATASection();
+      node.ownerDocument = this;
+      node.appendData(data);
+      return node;
+    },
+    createProcessingInstruction: function (target, data) {
+      var node = new ProcessingInstruction();
+      node.ownerDocument = this;
+      node.tagName = node.nodeName = node.target = target;
+      node.nodeValue = node.data = data;
+      return node;
+    },
+    createAttribute: function (name) {
+      var node = new Attr();
+      node.ownerDocument = this;
+      node.name = name;
+      node.nodeName = name;
+      node.localName = name;
+      node.specified = true;
+      return node;
+    },
+    createEntityReference: function (name) {
+      var node = new EntityReference();
+      node.ownerDocument = this;
+      node.nodeName = name;
+      return node;
+    },
+    // Introduced in DOM Level 2:
+    createElementNS: function (namespaceURI, qualifiedName) {
+      var node = new Element();
+      var pl = qualifiedName.split(':');
+      var attrs = node.attributes = new NamedNodeMap();
+      node.childNodes = new NodeList();
+      node.ownerDocument = this;
+      node.nodeName = qualifiedName;
+      node.tagName = qualifiedName;
+      node.namespaceURI = namespaceURI;
+      if (pl.length == 2) {
+        node.prefix = pl[0];
+        node.localName = pl[1];
+      } else {
+        //el.prefix = null;
+        node.localName = qualifiedName;
+      }
+      attrs._ownerElement = node;
+      return node;
+    },
+    // Introduced in DOM Level 2:
+    createAttributeNS: function (namespaceURI, qualifiedName) {
+      var node = new Attr();
+      var pl = qualifiedName.split(':');
+      node.ownerDocument = this;
+      node.nodeName = qualifiedName;
+      node.name = qualifiedName;
+      node.namespaceURI = namespaceURI;
+      node.specified = true;
+      if (pl.length == 2) {
+        node.prefix = pl[0];
+        node.localName = pl[1];
+      } else {
+        //el.prefix = null;
+        node.localName = qualifiedName;
+      }
+      return node;
+    }
+  };
+  _extends(Document, Node);
+  function Element() {
+    this._nsMap = {};
+  }
+  Element.prototype = {
+    nodeType: ELEMENT_NODE,
+    hasAttribute: function (name) {
+      return this.getAttributeNode(name) != null;
+    },
+    getAttribute: function (name) {
+      var attr = this.getAttributeNode(name);
+      return attr && attr.value || '';
+    },
+    getAttributeNode: function (name) {
+      return this.attributes.getNamedItem(name);
+    },
+    setAttribute: function (name, value) {
+      var attr = this.ownerDocument.createAttribute(name);
+      attr.value = attr.nodeValue = "" + value;
+      this.setAttributeNode(attr);
+    },
+    removeAttribute: function (name) {
+      var attr = this.getAttributeNode(name);
+      attr && this.removeAttributeNode(attr);
+    },
+    //four real opeartion method
+    appendChild: function (newChild) {
+      if (newChild.nodeType === DOCUMENT_FRAGMENT_NODE) {
+        return this.insertBefore(newChild, null);
+      } else {
+        return _appendSingleChild(this, newChild);
+      }
+    },
+    setAttributeNode: function (newAttr) {
+      return this.attributes.setNamedItem(newAttr);
+    },
+    setAttributeNodeNS: function (newAttr) {
+      return this.attributes.setNamedItemNS(newAttr);
+    },
+    removeAttributeNode: function (oldAttr) {
+      //console.log(this == oldAttr.ownerElement)
+      return this.attributes.removeNamedItem(oldAttr.nodeName);
+    },
+    //get real attribute name,and remove it by removeAttributeNode
+    removeAttributeNS: function (namespaceURI, localName) {
+      var old = this.getAttributeNodeNS(namespaceURI, localName);
+      old && this.removeAttributeNode(old);
+    },
+    hasAttributeNS: function (namespaceURI, localName) {
+      return this.getAttributeNodeNS(namespaceURI, localName) != null;
+    },
+    getAttributeNS: function (namespaceURI, localName) {
+      var attr = this.getAttributeNodeNS(namespaceURI, localName);
+      return attr && attr.value || '';
+    },
+    setAttributeNS: function (namespaceURI, qualifiedName, value) {
+      var attr = this.ownerDocument.createAttributeNS(namespaceURI, qualifiedName);
+      attr.value = attr.nodeValue = "" + value;
+      this.setAttributeNode(attr);
+    },
+    getAttributeNodeNS: function (namespaceURI, localName) {
+      return this.attributes.getNamedItemNS(namespaceURI, localName);
+    },
+    getElementsByTagName: function (tagName) {
+      return new LiveNodeList(this, function (base) {
+        var ls = [];
+        _visitNode(base, function (node) {
+          if (node !== base && node.nodeType == ELEMENT_NODE && (tagName === '*' || node.tagName == tagName)) {
+            ls.push(node);
+          }
+        });
+        return ls;
+      });
+    },
+    getElementsByTagNameNS: function (namespaceURI, localName) {
+      return new LiveNodeList(this, function (base) {
+        var ls = [];
+        _visitNode(base, function (node) {
+          if (node !== base && node.nodeType === ELEMENT_NODE && (namespaceURI === '*' || node.namespaceURI === namespaceURI) && (localName === '*' || node.localName == localName)) {
+            ls.push(node);
+          }
+        });
+        return ls;
+      });
+    }
+  };
+  Document.prototype.getElementsByTagName = Element.prototype.getElementsByTagName;
+  Document.prototype.getElementsByTagNameNS = Element.prototype.getElementsByTagNameNS;
+  _extends(Element, Node);
+  function Attr() {}
+  Attr.prototype.nodeType = ATTRIBUTE_NODE;
+  _extends(Attr, Node);
+  function CharacterData() {}
+  CharacterData.prototype = {
+    data: '',
+    substringData: function (offset, count) {
+      return this.data.substring(offset, offset + count);
+    },
+    appendData: function (text) {
+      text = this.data + text;
+      this.nodeValue = this.data = text;
+      this.length = text.length;
+    },
+    insertData: function (offset, text) {
+      this.replaceData(offset, 0, text);
+    },
+    appendChild: function (newChild) {
+      throw new Error(ExceptionMessage[HIERARCHY_REQUEST_ERR]);
+    },
+    deleteData: function (offset, count) {
+      this.replaceData(offset, count, "");
+    },
+    replaceData: function (offset, count, text) {
+      var start = this.data.substring(0, offset);
+      var end = this.data.substring(offset + count);
+      text = start + text + end;
+      this.nodeValue = this.data = text;
+      this.length = text.length;
+    }
+  };
+  _extends(CharacterData, Node);
+  function Text() {}
+  Text.prototype = {
+    nodeName: "#text",
+    nodeType: TEXT_NODE,
+    splitText: function (offset) {
+      var text = this.data;
+      var newText = text.substring(offset);
+      text = text.substring(0, offset);
+      this.data = this.nodeValue = text;
+      this.length = text.length;
+      var newNode = this.ownerDocument.createTextNode(newText);
+      if (this.parentNode) {
+        this.parentNode.insertBefore(newNode, this.nextSibling);
+      }
+      return newNode;
+    }
+  };
+  _extends(Text, CharacterData);
+  function Comment() {}
+  Comment.prototype = {
+    nodeName: "#comment",
+    nodeType: COMMENT_NODE
+  };
+  _extends(Comment, CharacterData);
+  function CDATASection() {}
+  CDATASection.prototype = {
+    nodeName: "#cdata-section",
+    nodeType: CDATA_SECTION_NODE
+  };
+  _extends(CDATASection, CharacterData);
+  function DocumentType() {}
+  DocumentType.prototype.nodeType = DOCUMENT_TYPE_NODE;
+  _extends(DocumentType, Node);
+  function Notation() {}
+  Notation.prototype.nodeType = NOTATION_NODE;
+  _extends(Notation, Node);
+  function Entity() {}
+  Entity.prototype.nodeType = ENTITY_NODE;
+  _extends(Entity, Node);
+  function EntityReference() {}
+  EntityReference.prototype.nodeType = ENTITY_REFERENCE_NODE;
+  _extends(EntityReference, Node);
+  function DocumentFragment() {}
+  DocumentFragment.prototype.nodeName = "#document-fragment";
+  DocumentFragment.prototype.nodeType = DOCUMENT_FRAGMENT_NODE;
+  _extends(DocumentFragment, Node);
+  function ProcessingInstruction() {}
+  ProcessingInstruction.prototype.nodeType = PROCESSING_INSTRUCTION_NODE;
+  _extends(ProcessingInstruction, Node);
+  function XMLSerializer() {}
+  XMLSerializer.prototype.serializeToString = function (node, isHtml, nodeFilter) {
+    return nodeSerializeToString.call(node, isHtml, nodeFilter);
+  };
+  Node.prototype.toString = nodeSerializeToString;
+  function nodeSerializeToString(isHtml, nodeFilter) {
+    var buf = [];
+    var refNode = this.nodeType == 9 && this.documentElement || this;
+    var prefix = refNode.prefix;
+    var uri = refNode.namespaceURI;
+    if (uri && prefix == null) {
+      //console.log(prefix)
+      var prefix = refNode.lookupPrefix(uri);
+      if (prefix == null) {
+        //isHTML = true;
+        var visibleNamespaces = [{
+          namespace: uri,
+          prefix: null
+        }
+        //{namespace:uri,prefix:''}
+        ];
+      }
+    }
+
+    serializeToString(this, buf, isHtml, nodeFilter, visibleNamespaces);
+    //console.log('###',this.nodeType,uri,prefix,buf.join(''))
+    return buf.join('');
+  }
+  function needNamespaceDefine(node, isHTML, visibleNamespaces) {
+    var prefix = node.prefix || '';
+    var uri = node.namespaceURI;
+    // According to [Namespaces in XML 1.0](https://www.w3.org/TR/REC-xml-names/#ns-using) ,
+    // and more specifically https://www.w3.org/TR/REC-xml-names/#nsc-NoPrefixUndecl :
+    // > In a namespace declaration for a prefix [...], the attribute value MUST NOT be empty.
+    // in a similar manner [Namespaces in XML 1.1](https://www.w3.org/TR/xml-names11/#ns-using)
+    // and more specifically https://www.w3.org/TR/xml-names11/#nsc-NSDeclared :
+    // > [...] Furthermore, the attribute value [...] must not be an empty string.
+    // so serializing empty namespace value like xmlns:ds="" would produce an invalid XML document.
+    if (!uri) {
+      return false;
+    }
+    if (prefix === "xml" && uri === NAMESPACE$2.XML || uri === NAMESPACE$2.XMLNS) {
+      return false;
+    }
+    var i = visibleNamespaces.length;
+    while (i--) {
+      var ns = visibleNamespaces[i];
+      // get namespace prefix
+      if (ns.prefix === prefix) {
+        return ns.namespace !== uri;
+      }
+    }
+    return true;
+  }
+  /**
+   * Well-formed constraint: No < in Attribute Values
+   * > The replacement text of any entity referred to directly or indirectly
+   * > in an attribute value must not contain a <.
+   * @see https://www.w3.org/TR/xml11/#CleanAttrVals
+   * @see https://www.w3.org/TR/xml11/#NT-AttValue
+   *
+   * Literal whitespace other than space that appear in attribute values
+   * are serialized as their entity references, so they will be preserved.
+   * (In contrast to whitespace literals in the input which are normalized to spaces)
+   * @see https://www.w3.org/TR/xml11/#AVNormalize
+   * @see https://w3c.github.io/DOM-Parsing/#serializing-an-element-s-attributes
+   */
+  function addSerializedAttribute(buf, qualifiedName, value) {
+    buf.push(' ', qualifiedName, '="', value.replace(/[<>&"\t\n\r]/g, _xmlEncoder), '"');
+  }
+  function serializeToString(node, buf, isHTML, nodeFilter, visibleNamespaces) {
+    if (!visibleNamespaces) {
+      visibleNamespaces = [];
+    }
+    if (nodeFilter) {
+      node = nodeFilter(node);
+      if (node) {
+        if (typeof node == 'string') {
+          buf.push(node);
+          return;
+        }
+      } else {
+        return;
+      }
+      //buf.sort.apply(attrs, attributeSorter);
+    }
+
+    switch (node.nodeType) {
+      case ELEMENT_NODE:
+        var attrs = node.attributes;
+        var len = attrs.length;
+        var child = node.firstChild;
+        var nodeName = node.tagName;
+        isHTML = NAMESPACE$2.isHTML(node.namespaceURI) || isHTML;
+        var prefixedNodeName = nodeName;
+        if (!isHTML && !node.prefix && node.namespaceURI) {
+          var defaultNS;
+          // lookup current default ns from `xmlns` attribute
+          for (var ai = 0; ai < attrs.length; ai++) {
+            if (attrs.item(ai).name === 'xmlns') {
+              defaultNS = attrs.item(ai).value;
+              break;
+            }
+          }
+          if (!defaultNS) {
+            // lookup current default ns in visibleNamespaces
+            for (var nsi = visibleNamespaces.length - 1; nsi >= 0; nsi--) {
+              var namespace = visibleNamespaces[nsi];
+              if (namespace.prefix === '' && namespace.namespace === node.namespaceURI) {
+                defaultNS = namespace.namespace;
+                break;
+              }
+            }
+          }
+          if (defaultNS !== node.namespaceURI) {
+            for (var nsi = visibleNamespaces.length - 1; nsi >= 0; nsi--) {
+              var namespace = visibleNamespaces[nsi];
+              if (namespace.namespace === node.namespaceURI) {
+                if (namespace.prefix) {
+                  prefixedNodeName = namespace.prefix + ':' + nodeName;
+                }
+                break;
+              }
+            }
+          }
+        }
+        buf.push('<', prefixedNodeName);
+        for (var i = 0; i < len; i++) {
+          // add namespaces for attributes
+          var attr = attrs.item(i);
+          if (attr.prefix == 'xmlns') {
+            visibleNamespaces.push({
+              prefix: attr.localName,
+              namespace: attr.value
+            });
+          } else if (attr.nodeName == 'xmlns') {
+            visibleNamespaces.push({
+              prefix: '',
+              namespace: attr.value
+            });
+          }
+        }
+        for (var i = 0; i < len; i++) {
+          var attr = attrs.item(i);
+          if (needNamespaceDefine(attr, isHTML, visibleNamespaces)) {
+            var prefix = attr.prefix || '';
+            var uri = attr.namespaceURI;
+            addSerializedAttribute(buf, prefix ? 'xmlns:' + prefix : "xmlns", uri);
+            visibleNamespaces.push({
+              prefix: prefix,
+              namespace: uri
+            });
+          }
+          serializeToString(attr, buf, isHTML, nodeFilter, visibleNamespaces);
+        }
+
+        // add namespace for current node
+        if (nodeName === prefixedNodeName && needNamespaceDefine(node, isHTML, visibleNamespaces)) {
+          var prefix = node.prefix || '';
+          var uri = node.namespaceURI;
+          addSerializedAttribute(buf, prefix ? 'xmlns:' + prefix : "xmlns", uri);
+          visibleNamespaces.push({
+            prefix: prefix,
+            namespace: uri
+          });
+        }
+        if (child || isHTML && !/^(?:meta|link|img|br|hr|input)$/i.test(nodeName)) {
+          buf.push('>');
+          //if is cdata child node
+          if (isHTML && /^script$/i.test(nodeName)) {
+            while (child) {
+              if (child.data) {
+                buf.push(child.data);
+              } else {
+                serializeToString(child, buf, isHTML, nodeFilter, visibleNamespaces.slice());
+              }
+              child = child.nextSibling;
+            }
+          } else {
+            while (child) {
+              serializeToString(child, buf, isHTML, nodeFilter, visibleNamespaces.slice());
+              child = child.nextSibling;
+            }
+          }
+          buf.push('</', prefixedNodeName, '>');
+        } else {
+          buf.push('/>');
+        }
+        // remove added visible namespaces
+        //visibleNamespaces.length = startVisibleNamespaces;
+        return;
+      case DOCUMENT_NODE:
+      case DOCUMENT_FRAGMENT_NODE:
+        var child = node.firstChild;
+        while (child) {
+          serializeToString(child, buf, isHTML, nodeFilter, visibleNamespaces.slice());
+          child = child.nextSibling;
+        }
+        return;
+      case ATTRIBUTE_NODE:
+        return addSerializedAttribute(buf, node.name, node.value);
+      case TEXT_NODE:
+        /**
+         * The ampersand character (&) and the left angle bracket (<) must not appear in their literal form,
+         * except when used as markup delimiters, or within a comment, a processing instruction, or a CDATA section.
+         * If they are needed elsewhere, they must be escaped using either numeric character references or the strings
+         * `&amp;` and `&lt;` respectively.
+         * The right angle bracket (>) may be represented using the string " &gt; ", and must, for compatibility,
+         * be escaped using either `&gt;` or a character reference when it appears in the string `]]>` in content,
+         * when that string is not marking the end of a CDATA section.
+         *
+         * In the content of elements, character data is any string of characters
+         * which does not contain the start-delimiter of any markup
+         * and does not include the CDATA-section-close delimiter, `]]>`.
+         *
+         * @see https://www.w3.org/TR/xml/#NT-CharData
+         * @see https://w3c.github.io/DOM-Parsing/#xml-serializing-a-text-node
+         */
+        return buf.push(node.data.replace(/[<&>]/g, _xmlEncoder));
+      case CDATA_SECTION_NODE:
+        return buf.push('<![CDATA[', node.data, ']]>');
+      case COMMENT_NODE:
+        return buf.push("<!--", node.data, "-->");
+      case DOCUMENT_TYPE_NODE:
+        var pubid = node.publicId;
+        var sysid = node.systemId;
+        buf.push('<!DOCTYPE ', node.name);
+        if (pubid) {
+          buf.push(' PUBLIC ', pubid);
+          if (sysid && sysid != '.') {
+            buf.push(' ', sysid);
+          }
+          buf.push('>');
+        } else if (sysid && sysid != '.') {
+          buf.push(' SYSTEM ', sysid, '>');
+        } else {
+          var sub = node.internalSubset;
+          if (sub) {
+            buf.push(" [", sub, "]");
+          }
+          buf.push(">");
+        }
+        return;
+      case PROCESSING_INSTRUCTION_NODE:
+        return buf.push("<?", node.target, " ", node.data, "?>");
+      case ENTITY_REFERENCE_NODE:
+        return buf.push('&', node.nodeName, ';');
+      //case ENTITY_NODE:
+      //case NOTATION_NODE:
+      default:
+        buf.push('??', node.nodeName);
+    }
+  }
+  function importNode(doc, node, deep) {
+    var node2;
+    switch (node.nodeType) {
+      case ELEMENT_NODE:
+        node2 = node.cloneNode(false);
+        node2.ownerDocument = doc;
+      //var attrs = node2.attributes;
+      //var len = attrs.length;
+      //for(var i=0;i<len;i++){
+      //node2.setAttributeNodeNS(importNode(doc,attrs.item(i),deep));
+      //}
+      case DOCUMENT_FRAGMENT_NODE:
+        break;
+      case ATTRIBUTE_NODE:
+        deep = true;
+        break;
+      //case ENTITY_REFERENCE_NODE:
+      //case PROCESSING_INSTRUCTION_NODE:
+      ////case TEXT_NODE:
+      //case CDATA_SECTION_NODE:
+      //case COMMENT_NODE:
+      //	deep = false;
+      //	break;
+      //case DOCUMENT_NODE:
+      //case DOCUMENT_TYPE_NODE:
+      //cannot be imported.
+      //case ENTITY_NODE:
+      //case NOTATION_NODE：
+      //can not hit in level3
+      //default:throw e;
+    }
+
+    if (!node2) {
+      node2 = node.cloneNode(false); //false
+    }
+
+    node2.ownerDocument = doc;
+    node2.parentNode = null;
+    if (deep) {
+      var child = node.firstChild;
+      while (child) {
+        node2.appendChild(importNode(doc, child, deep));
+        child = child.nextSibling;
+      }
+    }
+    return node2;
+  }
+  //
+  //var _relationMap = {firstChild:1,lastChild:1,previousSibling:1,nextSibling:1,
+  //					attributes:1,childNodes:1,parentNode:1,documentElement:1,doctype,};
+  function cloneNode(doc, node, deep) {
+    var node2 = new node.constructor();
+    for (var n in node) {
+      if (Object.prototype.hasOwnProperty.call(node, n)) {
+        var v = node[n];
+        if (typeof v != "object") {
+          if (v != node2[n]) {
+            node2[n] = v;
+          }
+        }
+      }
+    }
+    if (node.childNodes) {
+      node2.childNodes = new NodeList();
+    }
+    node2.ownerDocument = doc;
+    switch (node2.nodeType) {
+      case ELEMENT_NODE:
+        var attrs = node.attributes;
+        var attrs2 = node2.attributes = new NamedNodeMap();
+        var len = attrs.length;
+        attrs2._ownerElement = node2;
+        for (var i = 0; i < len; i++) {
+          node2.setAttributeNode(cloneNode(doc, attrs.item(i), true));
+        }
+        break;
+      case ATTRIBUTE_NODE:
+        deep = true;
+    }
+    if (deep) {
+      var child = node.firstChild;
+      while (child) {
+        node2.appendChild(cloneNode(doc, child, deep));
+        child = child.nextSibling;
+      }
+    }
+    return node2;
+  }
+  function __set__(object, key, value) {
+    object[key] = value;
+  }
+  //do dynamic
+  try {
+    if (Object.defineProperty) {
+      Object.defineProperty(LiveNodeList.prototype, 'length', {
+        get: function () {
+          _updateLiveList(this);
+          return this.$$length;
+        }
+      });
+      Object.defineProperty(Node.prototype, 'textContent', {
+        get: function () {
+          return getTextContent(this);
+        },
+        set: function (data) {
+          switch (this.nodeType) {
+            case ELEMENT_NODE:
+            case DOCUMENT_FRAGMENT_NODE:
+              while (this.firstChild) {
+                this.removeChild(this.firstChild);
+              }
+              if (data || String(data)) {
+                this.appendChild(this.ownerDocument.createTextNode(data));
+              }
+              break;
+            default:
+              this.data = data;
+              this.value = data;
+              this.nodeValue = data;
+          }
+        }
+      });
+      function getTextContent(node) {
+        switch (node.nodeType) {
+          case ELEMENT_NODE:
+          case DOCUMENT_FRAGMENT_NODE:
+            var buf = [];
+            node = node.firstChild;
+            while (node) {
+              if (node.nodeType !== 7 && node.nodeType !== 8) {
+                buf.push(getTextContent(node));
+              }
+              node = node.nextSibling;
+            }
+            return buf.join('');
+          default:
+            return node.nodeValue;
+        }
+      }
+      __set__ = function (object, key, value) {
+        //console.log(value)
+        object['$$' + key] = value;
+      };
+    }
+  } catch (e) {//ie8
+  }
+
+  //if(typeof require == 'function'){
+  var DocumentType_1 = DocumentType;
+  var DOMException_1 = DOMException;
+  var DOMImplementation_1 = DOMImplementation$1;
+  var Element_1 = Element;
+  var Node_1 = Node;
+  var NodeList_1 = NodeList;
+  var XMLSerializer_1 = XMLSerializer;
+  //}
+
+  var dom = {
+    DocumentType: DocumentType_1,
+    DOMException: DOMException_1,
+    DOMImplementation: DOMImplementation_1,
+    Element: Element_1,
+    Node: Node_1,
+    NodeList: NodeList_1,
+    XMLSerializer: XMLSerializer_1
+  };
+
+  var entities = createCommonjsModule(function (module, exports) {
+
+    var freeze = conventions.freeze;
+
+    /**
+     * The entities that are predefined in every XML document.
+     *
+     * @see https://www.w3.org/TR/2006/REC-xml11-20060816/#sec-predefined-ent W3C XML 1.1
+     * @see https://www.w3.org/TR/2008/REC-xml-20081126/#sec-predefined-ent W3C XML 1.0
+     * @see https://en.wikipedia.org/wiki/List_of_XML_and_HTML_character_entity_references#Predefined_entities_in_XML Wikipedia
+     */
+    exports.XML_ENTITIES = freeze({
+      amp: '&',
+      apos: "'",
+      gt: '>',
+      lt: '<',
+      quot: '"'
+    });
+
+    /**
+     * A map of all entities that are detected in an HTML document.
+     * They contain all entries from `XML_ENTITIES`.
+     *
+     * @see XML_ENTITIES
+     * @see DOMParser.parseFromString
+     * @see DOMImplementation.prototype.createHTMLDocument
+     * @see https://html.spec.whatwg.org/#named-character-references WHATWG HTML(5) Spec
+     * @see https://html.spec.whatwg.org/entities.json JSON
+     * @see https://www.w3.org/TR/xml-entity-names/ W3C XML Entity Names
+     * @see https://www.w3.org/TR/html4/sgml/entities.html W3C HTML4/SGML
+     * @see https://en.wikipedia.org/wiki/List_of_XML_and_HTML_character_entity_references#Character_entity_references_in_HTML Wikipedia (HTML)
+     * @see https://en.wikipedia.org/wiki/List_of_XML_and_HTML_character_entity_references#Entities_representing_special_characters_in_XHTML Wikpedia (XHTML)
+     */
+    exports.HTML_ENTITIES = freeze({
+      Aacute: '\u00C1',
+      aacute: '\u00E1',
+      Abreve: '\u0102',
+      abreve: '\u0103',
+      ac: '\u223E',
+      acd: '\u223F',
+      acE: '\u223E\u0333',
+      Acirc: '\u00C2',
+      acirc: '\u00E2',
+      acute: '\u00B4',
+      Acy: '\u0410',
+      acy: '\u0430',
+      AElig: '\u00C6',
+      aelig: '\u00E6',
+      af: '\u2061',
+      Afr: '\uD835\uDD04',
+      afr: '\uD835\uDD1E',
+      Agrave: '\u00C0',
+      agrave: '\u00E0',
+      alefsym: '\u2135',
+      aleph: '\u2135',
+      Alpha: '\u0391',
+      alpha: '\u03B1',
+      Amacr: '\u0100',
+      amacr: '\u0101',
+      amalg: '\u2A3F',
+      AMP: '\u0026',
+      amp: '\u0026',
+      And: '\u2A53',
+      and: '\u2227',
+      andand: '\u2A55',
+      andd: '\u2A5C',
+      andslope: '\u2A58',
+      andv: '\u2A5A',
+      ang: '\u2220',
+      ange: '\u29A4',
+      angle: '\u2220',
+      angmsd: '\u2221',
+      angmsdaa: '\u29A8',
+      angmsdab: '\u29A9',
+      angmsdac: '\u29AA',
+      angmsdad: '\u29AB',
+      angmsdae: '\u29AC',
+      angmsdaf: '\u29AD',
+      angmsdag: '\u29AE',
+      angmsdah: '\u29AF',
+      angrt: '\u221F',
+      angrtvb: '\u22BE',
+      angrtvbd: '\u299D',
+      angsph: '\u2222',
+      angst: '\u00C5',
+      angzarr: '\u237C',
+      Aogon: '\u0104',
+      aogon: '\u0105',
+      Aopf: '\uD835\uDD38',
+      aopf: '\uD835\uDD52',
+      ap: '\u2248',
+      apacir: '\u2A6F',
+      apE: '\u2A70',
+      ape: '\u224A',
+      apid: '\u224B',
+      apos: '\u0027',
+      ApplyFunction: '\u2061',
+      approx: '\u2248',
+      approxeq: '\u224A',
+      Aring: '\u00C5',
+      aring: '\u00E5',
+      Ascr: '\uD835\uDC9C',
+      ascr: '\uD835\uDCB6',
+      Assign: '\u2254',
+      ast: '\u002A',
+      asymp: '\u2248',
+      asympeq: '\u224D',
+      Atilde: '\u00C3',
+      atilde: '\u00E3',
+      Auml: '\u00C4',
+      auml: '\u00E4',
+      awconint: '\u2233',
+      awint: '\u2A11',
+      backcong: '\u224C',
+      backepsilon: '\u03F6',
+      backprime: '\u2035',
+      backsim: '\u223D',
+      backsimeq: '\u22CD',
+      Backslash: '\u2216',
+      Barv: '\u2AE7',
+      barvee: '\u22BD',
+      Barwed: '\u2306',
+      barwed: '\u2305',
+      barwedge: '\u2305',
+      bbrk: '\u23B5',
+      bbrktbrk: '\u23B6',
+      bcong: '\u224C',
+      Bcy: '\u0411',
+      bcy: '\u0431',
+      bdquo: '\u201E',
+      becaus: '\u2235',
+      Because: '\u2235',
+      because: '\u2235',
+      bemptyv: '\u29B0',
+      bepsi: '\u03F6',
+      bernou: '\u212C',
+      Bernoullis: '\u212C',
+      Beta: '\u0392',
+      beta: '\u03B2',
+      beth: '\u2136',
+      between: '\u226C',
+      Bfr: '\uD835\uDD05',
+      bfr: '\uD835\uDD1F',
+      bigcap: '\u22C2',
+      bigcirc: '\u25EF',
+      bigcup: '\u22C3',
+      bigodot: '\u2A00',
+      bigoplus: '\u2A01',
+      bigotimes: '\u2A02',
+      bigsqcup: '\u2A06',
+      bigstar: '\u2605',
+      bigtriangledown: '\u25BD',
+      bigtriangleup: '\u25B3',
+      biguplus: '\u2A04',
+      bigvee: '\u22C1',
+      bigwedge: '\u22C0',
+      bkarow: '\u290D',
+      blacklozenge: '\u29EB',
+      blacksquare: '\u25AA',
+      blacktriangle: '\u25B4',
+      blacktriangledown: '\u25BE',
+      blacktriangleleft: '\u25C2',
+      blacktriangleright: '\u25B8',
+      blank: '\u2423',
+      blk12: '\u2592',
+      blk14: '\u2591',
+      blk34: '\u2593',
+      block: '\u2588',
+      bne: '\u003D\u20E5',
+      bnequiv: '\u2261\u20E5',
+      bNot: '\u2AED',
+      bnot: '\u2310',
+      Bopf: '\uD835\uDD39',
+      bopf: '\uD835\uDD53',
+      bot: '\u22A5',
+      bottom: '\u22A5',
+      bowtie: '\u22C8',
+      boxbox: '\u29C9',
+      boxDL: '\u2557',
+      boxDl: '\u2556',
+      boxdL: '\u2555',
+      boxdl: '\u2510',
+      boxDR: '\u2554',
+      boxDr: '\u2553',
+      boxdR: '\u2552',
+      boxdr: '\u250C',
+      boxH: '\u2550',
+      boxh: '\u2500',
+      boxHD: '\u2566',
+      boxHd: '\u2564',
+      boxhD: '\u2565',
+      boxhd: '\u252C',
+      boxHU: '\u2569',
+      boxHu: '\u2567',
+      boxhU: '\u2568',
+      boxhu: '\u2534',
+      boxminus: '\u229F',
+      boxplus: '\u229E',
+      boxtimes: '\u22A0',
+      boxUL: '\u255D',
+      boxUl: '\u255C',
+      boxuL: '\u255B',
+      boxul: '\u2518',
+      boxUR: '\u255A',
+      boxUr: '\u2559',
+      boxuR: '\u2558',
+      boxur: '\u2514',
+      boxV: '\u2551',
+      boxv: '\u2502',
+      boxVH: '\u256C',
+      boxVh: '\u256B',
+      boxvH: '\u256A',
+      boxvh: '\u253C',
+      boxVL: '\u2563',
+      boxVl: '\u2562',
+      boxvL: '\u2561',
+      boxvl: '\u2524',
+      boxVR: '\u2560',
+      boxVr: '\u255F',
+      boxvR: '\u255E',
+      boxvr: '\u251C',
+      bprime: '\u2035',
+      Breve: '\u02D8',
+      breve: '\u02D8',
+      brvbar: '\u00A6',
+      Bscr: '\u212C',
+      bscr: '\uD835\uDCB7',
+      bsemi: '\u204F',
+      bsim: '\u223D',
+      bsime: '\u22CD',
+      bsol: '\u005C',
+      bsolb: '\u29C5',
+      bsolhsub: '\u27C8',
+      bull: '\u2022',
+      bullet: '\u2022',
+      bump: '\u224E',
+      bumpE: '\u2AAE',
+      bumpe: '\u224F',
+      Bumpeq: '\u224E',
+      bumpeq: '\u224F',
+      Cacute: '\u0106',
+      cacute: '\u0107',
+      Cap: '\u22D2',
+      cap: '\u2229',
+      capand: '\u2A44',
+      capbrcup: '\u2A49',
+      capcap: '\u2A4B',
+      capcup: '\u2A47',
+      capdot: '\u2A40',
+      CapitalDifferentialD: '\u2145',
+      caps: '\u2229\uFE00',
+      caret: '\u2041',
+      caron: '\u02C7',
+      Cayleys: '\u212D',
+      ccaps: '\u2A4D',
+      Ccaron: '\u010C',
+      ccaron: '\u010D',
+      Ccedil: '\u00C7',
+      ccedil: '\u00E7',
+      Ccirc: '\u0108',
+      ccirc: '\u0109',
+      Cconint: '\u2230',
+      ccups: '\u2A4C',
+      ccupssm: '\u2A50',
+      Cdot: '\u010A',
+      cdot: '\u010B',
+      cedil: '\u00B8',
+      Cedilla: '\u00B8',
+      cemptyv: '\u29B2',
+      cent: '\u00A2',
+      CenterDot: '\u00B7',
+      centerdot: '\u00B7',
+      Cfr: '\u212D',
+      cfr: '\uD835\uDD20',
+      CHcy: '\u0427',
+      chcy: '\u0447',
+      check: '\u2713',
+      checkmark: '\u2713',
+      Chi: '\u03A7',
+      chi: '\u03C7',
+      cir: '\u25CB',
+      circ: '\u02C6',
+      circeq: '\u2257',
+      circlearrowleft: '\u21BA',
+      circlearrowright: '\u21BB',
+      circledast: '\u229B',
+      circledcirc: '\u229A',
+      circleddash: '\u229D',
+      CircleDot: '\u2299',
+      circledR: '\u00AE',
+      circledS: '\u24C8',
+      CircleMinus: '\u2296',
+      CirclePlus: '\u2295',
+      CircleTimes: '\u2297',
+      cirE: '\u29C3',
+      cire: '\u2257',
+      cirfnint: '\u2A10',
+      cirmid: '\u2AEF',
+      cirscir: '\u29C2',
+      ClockwiseContourIntegral: '\u2232',
+      CloseCurlyDoubleQuote: '\u201D',
+      CloseCurlyQuote: '\u2019',
+      clubs: '\u2663',
+      clubsuit: '\u2663',
+      Colon: '\u2237',
+      colon: '\u003A',
+      Colone: '\u2A74',
+      colone: '\u2254',
+      coloneq: '\u2254',
+      comma: '\u002C',
+      commat: '\u0040',
+      comp: '\u2201',
+      compfn: '\u2218',
+      complement: '\u2201',
+      complexes: '\u2102',
+      cong: '\u2245',
+      congdot: '\u2A6D',
+      Congruent: '\u2261',
+      Conint: '\u222F',
+      conint: '\u222E',
+      ContourIntegral: '\u222E',
+      Copf: '\u2102',
+      copf: '\uD835\uDD54',
+      coprod: '\u2210',
+      Coproduct: '\u2210',
+      COPY: '\u00A9',
+      copy: '\u00A9',
+      copysr: '\u2117',
+      CounterClockwiseContourIntegral: '\u2233',
+      crarr: '\u21B5',
+      Cross: '\u2A2F',
+      cross: '\u2717',
+      Cscr: '\uD835\uDC9E',
+      cscr: '\uD835\uDCB8',
+      csub: '\u2ACF',
+      csube: '\u2AD1',
+      csup: '\u2AD0',
+      csupe: '\u2AD2',
+      ctdot: '\u22EF',
+      cudarrl: '\u2938',
+      cudarrr: '\u2935',
+      cuepr: '\u22DE',
+      cuesc: '\u22DF',
+      cularr: '\u21B6',
+      cularrp: '\u293D',
+      Cup: '\u22D3',
+      cup: '\u222A',
+      cupbrcap: '\u2A48',
+      CupCap: '\u224D',
+      cupcap: '\u2A46',
+      cupcup: '\u2A4A',
+      cupdot: '\u228D',
+      cupor: '\u2A45',
+      cups: '\u222A\uFE00',
+      curarr: '\u21B7',
+      curarrm: '\u293C',
+      curlyeqprec: '\u22DE',
+      curlyeqsucc: '\u22DF',
+      curlyvee: '\u22CE',
+      curlywedge: '\u22CF',
+      curren: '\u00A4',
+      curvearrowleft: '\u21B6',
+      curvearrowright: '\u21B7',
+      cuvee: '\u22CE',
+      cuwed: '\u22CF',
+      cwconint: '\u2232',
+      cwint: '\u2231',
+      cylcty: '\u232D',
+      Dagger: '\u2021',
+      dagger: '\u2020',
+      daleth: '\u2138',
+      Darr: '\u21A1',
+      dArr: '\u21D3',
+      darr: '\u2193',
+      dash: '\u2010',
+      Dashv: '\u2AE4',
+      dashv: '\u22A3',
+      dbkarow: '\u290F',
+      dblac: '\u02DD',
+      Dcaron: '\u010E',
+      dcaron: '\u010F',
+      Dcy: '\u0414',
+      dcy: '\u0434',
+      DD: '\u2145',
+      dd: '\u2146',
+      ddagger: '\u2021',
+      ddarr: '\u21CA',
+      DDotrahd: '\u2911',
+      ddotseq: '\u2A77',
+      deg: '\u00B0',
+      Del: '\u2207',
+      Delta: '\u0394',
+      delta: '\u03B4',
+      demptyv: '\u29B1',
+      dfisht: '\u297F',
+      Dfr: '\uD835\uDD07',
+      dfr: '\uD835\uDD21',
+      dHar: '\u2965',
+      dharl: '\u21C3',
+      dharr: '\u21C2',
+      DiacriticalAcute: '\u00B4',
+      DiacriticalDot: '\u02D9',
+      DiacriticalDoubleAcute: '\u02DD',
+      DiacriticalGrave: '\u0060',
+      DiacriticalTilde: '\u02DC',
+      diam: '\u22C4',
+      Diamond: '\u22C4',
+      diamond: '\u22C4',
+      diamondsuit: '\u2666',
+      diams: '\u2666',
+      die: '\u00A8',
+      DifferentialD: '\u2146',
+      digamma: '\u03DD',
+      disin: '\u22F2',
+      div: '\u00F7',
+      divide: '\u00F7',
+      divideontimes: '\u22C7',
+      divonx: '\u22C7',
+      DJcy: '\u0402',
+      djcy: '\u0452',
+      dlcorn: '\u231E',
+      dlcrop: '\u230D',
+      dollar: '\u0024',
+      Dopf: '\uD835\uDD3B',
+      dopf: '\uD835\uDD55',
+      Dot: '\u00A8',
+      dot: '\u02D9',
+      DotDot: '\u20DC',
+      doteq: '\u2250',
+      doteqdot: '\u2251',
+      DotEqual: '\u2250',
+      dotminus: '\u2238',
+      dotplus: '\u2214',
+      dotsquare: '\u22A1',
+      doublebarwedge: '\u2306',
+      DoubleContourIntegral: '\u222F',
+      DoubleDot: '\u00A8',
+      DoubleDownArrow: '\u21D3',
+      DoubleLeftArrow: '\u21D0',
+      DoubleLeftRightArrow: '\u21D4',
+      DoubleLeftTee: '\u2AE4',
+      DoubleLongLeftArrow: '\u27F8',
+      DoubleLongLeftRightArrow: '\u27FA',
+      DoubleLongRightArrow: '\u27F9',
+      DoubleRightArrow: '\u21D2',
+      DoubleRightTee: '\u22A8',
+      DoubleUpArrow: '\u21D1',
+      DoubleUpDownArrow: '\u21D5',
+      DoubleVerticalBar: '\u2225',
+      DownArrow: '\u2193',
+      Downarrow: '\u21D3',
+      downarrow: '\u2193',
+      DownArrowBar: '\u2913',
+      DownArrowUpArrow: '\u21F5',
+      DownBreve: '\u0311',
+      downdownarrows: '\u21CA',
+      downharpoonleft: '\u21C3',
+      downharpoonright: '\u21C2',
+      DownLeftRightVector: '\u2950',
+      DownLeftTeeVector: '\u295E',
+      DownLeftVector: '\u21BD',
+      DownLeftVectorBar: '\u2956',
+      DownRightTeeVector: '\u295F',
+      DownRightVector: '\u21C1',
+      DownRightVectorBar: '\u2957',
+      DownTee: '\u22A4',
+      DownTeeArrow: '\u21A7',
+      drbkarow: '\u2910',
+      drcorn: '\u231F',
+      drcrop: '\u230C',
+      Dscr: '\uD835\uDC9F',
+      dscr: '\uD835\uDCB9',
+      DScy: '\u0405',
+      dscy: '\u0455',
+      dsol: '\u29F6',
+      Dstrok: '\u0110',
+      dstrok: '\u0111',
+      dtdot: '\u22F1',
+      dtri: '\u25BF',
+      dtrif: '\u25BE',
+      duarr: '\u21F5',
+      duhar: '\u296F',
+      dwangle: '\u29A6',
+      DZcy: '\u040F',
+      dzcy: '\u045F',
+      dzigrarr: '\u27FF',
+      Eacute: '\u00C9',
+      eacute: '\u00E9',
+      easter: '\u2A6E',
+      Ecaron: '\u011A',
+      ecaron: '\u011B',
+      ecir: '\u2256',
+      Ecirc: '\u00CA',
+      ecirc: '\u00EA',
+      ecolon: '\u2255',
+      Ecy: '\u042D',
+      ecy: '\u044D',
+      eDDot: '\u2A77',
+      Edot: '\u0116',
+      eDot: '\u2251',
+      edot: '\u0117',
+      ee: '\u2147',
+      efDot: '\u2252',
+      Efr: '\uD835\uDD08',
+      efr: '\uD835\uDD22',
+      eg: '\u2A9A',
+      Egrave: '\u00C8',
+      egrave: '\u00E8',
+      egs: '\u2A96',
+      egsdot: '\u2A98',
+      el: '\u2A99',
+      Element: '\u2208',
+      elinters: '\u23E7',
+      ell: '\u2113',
+      els: '\u2A95',
+      elsdot: '\u2A97',
+      Emacr: '\u0112',
+      emacr: '\u0113',
+      empty: '\u2205',
+      emptyset: '\u2205',
+      EmptySmallSquare: '\u25FB',
+      emptyv: '\u2205',
+      EmptyVerySmallSquare: '\u25AB',
+      emsp: '\u2003',
+      emsp13: '\u2004',
+      emsp14: '\u2005',
+      ENG: '\u014A',
+      eng: '\u014B',
+      ensp: '\u2002',
+      Eogon: '\u0118',
+      eogon: '\u0119',
+      Eopf: '\uD835\uDD3C',
+      eopf: '\uD835\uDD56',
+      epar: '\u22D5',
+      eparsl: '\u29E3',
+      eplus: '\u2A71',
+      epsi: '\u03B5',
+      Epsilon: '\u0395',
+      epsilon: '\u03B5',
+      epsiv: '\u03F5',
+      eqcirc: '\u2256',
+      eqcolon: '\u2255',
+      eqsim: '\u2242',
+      eqslantgtr: '\u2A96',
+      eqslantless: '\u2A95',
+      Equal: '\u2A75',
+      equals: '\u003D',
+      EqualTilde: '\u2242',
+      equest: '\u225F',
+      Equilibrium: '\u21CC',
+      equiv: '\u2261',
+      equivDD: '\u2A78',
+      eqvparsl: '\u29E5',
+      erarr: '\u2971',
+      erDot: '\u2253',
+      Escr: '\u2130',
+      escr: '\u212F',
+      esdot: '\u2250',
+      Esim: '\u2A73',
+      esim: '\u2242',
+      Eta: '\u0397',
+      eta: '\u03B7',
+      ETH: '\u00D0',
+      eth: '\u00F0',
+      Euml: '\u00CB',
+      euml: '\u00EB',
+      euro: '\u20AC',
+      excl: '\u0021',
+      exist: '\u2203',
+      Exists: '\u2203',
+      expectation: '\u2130',
+      ExponentialE: '\u2147',
+      exponentiale: '\u2147',
+      fallingdotseq: '\u2252',
+      Fcy: '\u0424',
+      fcy: '\u0444',
+      female: '\u2640',
+      ffilig: '\uFB03',
+      fflig: '\uFB00',
+      ffllig: '\uFB04',
+      Ffr: '\uD835\uDD09',
+      ffr: '\uD835\uDD23',
+      filig: '\uFB01',
+      FilledSmallSquare: '\u25FC',
+      FilledVerySmallSquare: '\u25AA',
+      fjlig: '\u0066\u006A',
+      flat: '\u266D',
+      fllig: '\uFB02',
+      fltns: '\u25B1',
+      fnof: '\u0192',
+      Fopf: '\uD835\uDD3D',
+      fopf: '\uD835\uDD57',
+      ForAll: '\u2200',
+      forall: '\u2200',
+      fork: '\u22D4',
+      forkv: '\u2AD9',
+      Fouriertrf: '\u2131',
+      fpartint: '\u2A0D',
+      frac12: '\u00BD',
+      frac13: '\u2153',
+      frac14: '\u00BC',
+      frac15: '\u2155',
+      frac16: '\u2159',
+      frac18: '\u215B',
+      frac23: '\u2154',
+      frac25: '\u2156',
+      frac34: '\u00BE',
+      frac35: '\u2157',
+      frac38: '\u215C',
+      frac45: '\u2158',
+      frac56: '\u215A',
+      frac58: '\u215D',
+      frac78: '\u215E',
+      frasl: '\u2044',
+      frown: '\u2322',
+      Fscr: '\u2131',
+      fscr: '\uD835\uDCBB',
+      gacute: '\u01F5',
+      Gamma: '\u0393',
+      gamma: '\u03B3',
+      Gammad: '\u03DC',
+      gammad: '\u03DD',
+      gap: '\u2A86',
+      Gbreve: '\u011E',
+      gbreve: '\u011F',
+      Gcedil: '\u0122',
+      Gcirc: '\u011C',
+      gcirc: '\u011D',
+      Gcy: '\u0413',
+      gcy: '\u0433',
+      Gdot: '\u0120',
+      gdot: '\u0121',
+      gE: '\u2267',
+      ge: '\u2265',
+      gEl: '\u2A8C',
+      gel: '\u22DB',
+      geq: '\u2265',
+      geqq: '\u2267',
+      geqslant: '\u2A7E',
+      ges: '\u2A7E',
+      gescc: '\u2AA9',
+      gesdot: '\u2A80',
+      gesdoto: '\u2A82',
+      gesdotol: '\u2A84',
+      gesl: '\u22DB\uFE00',
+      gesles: '\u2A94',
+      Gfr: '\uD835\uDD0A',
+      gfr: '\uD835\uDD24',
+      Gg: '\u22D9',
+      gg: '\u226B',
+      ggg: '\u22D9',
+      gimel: '\u2137',
+      GJcy: '\u0403',
+      gjcy: '\u0453',
+      gl: '\u2277',
+      gla: '\u2AA5',
+      glE: '\u2A92',
+      glj: '\u2AA4',
+      gnap: '\u2A8A',
+      gnapprox: '\u2A8A',
+      gnE: '\u2269',
+      gne: '\u2A88',
+      gneq: '\u2A88',
+      gneqq: '\u2269',
+      gnsim: '\u22E7',
+      Gopf: '\uD835\uDD3E',
+      gopf: '\uD835\uDD58',
+      grave: '\u0060',
+      GreaterEqual: '\u2265',
+      GreaterEqualLess: '\u22DB',
+      GreaterFullEqual: '\u2267',
+      GreaterGreater: '\u2AA2',
+      GreaterLess: '\u2277',
+      GreaterSlantEqual: '\u2A7E',
+      GreaterTilde: '\u2273',
+      Gscr: '\uD835\uDCA2',
+      gscr: '\u210A',
+      gsim: '\u2273',
+      gsime: '\u2A8E',
+      gsiml: '\u2A90',
+      Gt: '\u226B',
+      GT: '\u003E',
+      gt: '\u003E',
+      gtcc: '\u2AA7',
+      gtcir: '\u2A7A',
+      gtdot: '\u22D7',
+      gtlPar: '\u2995',
+      gtquest: '\u2A7C',
+      gtrapprox: '\u2A86',
+      gtrarr: '\u2978',
+      gtrdot: '\u22D7',
+      gtreqless: '\u22DB',
+      gtreqqless: '\u2A8C',
+      gtrless: '\u2277',
+      gtrsim: '\u2273',
+      gvertneqq: '\u2269\uFE00',
+      gvnE: '\u2269\uFE00',
+      Hacek: '\u02C7',
+      hairsp: '\u200A',
+      half: '\u00BD',
+      hamilt: '\u210B',
+      HARDcy: '\u042A',
+      hardcy: '\u044A',
+      hArr: '\u21D4',
+      harr: '\u2194',
+      harrcir: '\u2948',
+      harrw: '\u21AD',
+      Hat: '\u005E',
+      hbar: '\u210F',
+      Hcirc: '\u0124',
+      hcirc: '\u0125',
+      hearts: '\u2665',
+      heartsuit: '\u2665',
+      hellip: '\u2026',
+      hercon: '\u22B9',
+      Hfr: '\u210C',
+      hfr: '\uD835\uDD25',
+      HilbertSpace: '\u210B',
+      hksearow: '\u2925',
+      hkswarow: '\u2926',
+      hoarr: '\u21FF',
+      homtht: '\u223B',
+      hookleftarrow: '\u21A9',
+      hookrightarrow: '\u21AA',
+      Hopf: '\u210D',
+      hopf: '\uD835\uDD59',
+      horbar: '\u2015',
+      HorizontalLine: '\u2500',
+      Hscr: '\u210B',
+      hscr: '\uD835\uDCBD',
+      hslash: '\u210F',
+      Hstrok: '\u0126',
+      hstrok: '\u0127',
+      HumpDownHump: '\u224E',
+      HumpEqual: '\u224F',
+      hybull: '\u2043',
+      hyphen: '\u2010',
+      Iacute: '\u00CD',
+      iacute: '\u00ED',
+      ic: '\u2063',
+      Icirc: '\u00CE',
+      icirc: '\u00EE',
+      Icy: '\u0418',
+      icy: '\u0438',
+      Idot: '\u0130',
+      IEcy: '\u0415',
+      iecy: '\u0435',
+      iexcl: '\u00A1',
+      iff: '\u21D4',
+      Ifr: '\u2111',
+      ifr: '\uD835\uDD26',
+      Igrave: '\u00CC',
+      igrave: '\u00EC',
+      ii: '\u2148',
+      iiiint: '\u2A0C',
+      iiint: '\u222D',
+      iinfin: '\u29DC',
+      iiota: '\u2129',
+      IJlig: '\u0132',
+      ijlig: '\u0133',
+      Im: '\u2111',
+      Imacr: '\u012A',
+      imacr: '\u012B',
+      image: '\u2111',
+      ImaginaryI: '\u2148',
+      imagline: '\u2110',
+      imagpart: '\u2111',
+      imath: '\u0131',
+      imof: '\u22B7',
+      imped: '\u01B5',
+      Implies: '\u21D2',
+      in: '\u2208',
+      incare: '\u2105',
+      infin: '\u221E',
+      infintie: '\u29DD',
+      inodot: '\u0131',
+      Int: '\u222C',
+      int: '\u222B',
+      intcal: '\u22BA',
+      integers: '\u2124',
+      Integral: '\u222B',
+      intercal: '\u22BA',
+      Intersection: '\u22C2',
+      intlarhk: '\u2A17',
+      intprod: '\u2A3C',
+      InvisibleComma: '\u2063',
+      InvisibleTimes: '\u2062',
+      IOcy: '\u0401',
+      iocy: '\u0451',
+      Iogon: '\u012E',
+      iogon: '\u012F',
+      Iopf: '\uD835\uDD40',
+      iopf: '\uD835\uDD5A',
+      Iota: '\u0399',
+      iota: '\u03B9',
+      iprod: '\u2A3C',
+      iquest: '\u00BF',
+      Iscr: '\u2110',
+      iscr: '\uD835\uDCBE',
+      isin: '\u2208',
+      isindot: '\u22F5',
+      isinE: '\u22F9',
+      isins: '\u22F4',
+      isinsv: '\u22F3',
+      isinv: '\u2208',
+      it: '\u2062',
+      Itilde: '\u0128',
+      itilde: '\u0129',
+      Iukcy: '\u0406',
+      iukcy: '\u0456',
+      Iuml: '\u00CF',
+      iuml: '\u00EF',
+      Jcirc: '\u0134',
+      jcirc: '\u0135',
+      Jcy: '\u0419',
+      jcy: '\u0439',
+      Jfr: '\uD835\uDD0D',
+      jfr: '\uD835\uDD27',
+      jmath: '\u0237',
+      Jopf: '\uD835\uDD41',
+      jopf: '\uD835\uDD5B',
+      Jscr: '\uD835\uDCA5',
+      jscr: '\uD835\uDCBF',
+      Jsercy: '\u0408',
+      jsercy: '\u0458',
+      Jukcy: '\u0404',
+      jukcy: '\u0454',
+      Kappa: '\u039A',
+      kappa: '\u03BA',
+      kappav: '\u03F0',
+      Kcedil: '\u0136',
+      kcedil: '\u0137',
+      Kcy: '\u041A',
+      kcy: '\u043A',
+      Kfr: '\uD835\uDD0E',
+      kfr: '\uD835\uDD28',
+      kgreen: '\u0138',
+      KHcy: '\u0425',
+      khcy: '\u0445',
+      KJcy: '\u040C',
+      kjcy: '\u045C',
+      Kopf: '\uD835\uDD42',
+      kopf: '\uD835\uDD5C',
+      Kscr: '\uD835\uDCA6',
+      kscr: '\uD835\uDCC0',
+      lAarr: '\u21DA',
+      Lacute: '\u0139',
+      lacute: '\u013A',
+      laemptyv: '\u29B4',
+      lagran: '\u2112',
+      Lambda: '\u039B',
+      lambda: '\u03BB',
+      Lang: '\u27EA',
+      lang: '\u27E8',
+      langd: '\u2991',
+      langle: '\u27E8',
+      lap: '\u2A85',
+      Laplacetrf: '\u2112',
+      laquo: '\u00AB',
+      Larr: '\u219E',
+      lArr: '\u21D0',
+      larr: '\u2190',
+      larrb: '\u21E4',
+      larrbfs: '\u291F',
+      larrfs: '\u291D',
+      larrhk: '\u21A9',
+      larrlp: '\u21AB',
+      larrpl: '\u2939',
+      larrsim: '\u2973',
+      larrtl: '\u21A2',
+      lat: '\u2AAB',
+      lAtail: '\u291B',
+      latail: '\u2919',
+      late: '\u2AAD',
+      lates: '\u2AAD\uFE00',
+      lBarr: '\u290E',
+      lbarr: '\u290C',
+      lbbrk: '\u2772',
+      lbrace: '\u007B',
+      lbrack: '\u005B',
+      lbrke: '\u298B',
+      lbrksld: '\u298F',
+      lbrkslu: '\u298D',
+      Lcaron: '\u013D',
+      lcaron: '\u013E',
+      Lcedil: '\u013B',
+      lcedil: '\u013C',
+      lceil: '\u2308',
+      lcub: '\u007B',
+      Lcy: '\u041B',
+      lcy: '\u043B',
+      ldca: '\u2936',
+      ldquo: '\u201C',
+      ldquor: '\u201E',
+      ldrdhar: '\u2967',
+      ldrushar: '\u294B',
+      ldsh: '\u21B2',
+      lE: '\u2266',
+      le: '\u2264',
+      LeftAngleBracket: '\u27E8',
+      LeftArrow: '\u2190',
+      Leftarrow: '\u21D0',
+      leftarrow: '\u2190',
+      LeftArrowBar: '\u21E4',
+      LeftArrowRightArrow: '\u21C6',
+      leftarrowtail: '\u21A2',
+      LeftCeiling: '\u2308',
+      LeftDoubleBracket: '\u27E6',
+      LeftDownTeeVector: '\u2961',
+      LeftDownVector: '\u21C3',
+      LeftDownVectorBar: '\u2959',
+      LeftFloor: '\u230A',
+      leftharpoondown: '\u21BD',
+      leftharpoonup: '\u21BC',
+      leftleftarrows: '\u21C7',
+      LeftRightArrow: '\u2194',
+      Leftrightarrow: '\u21D4',
+      leftrightarrow: '\u2194',
+      leftrightarrows: '\u21C6',
+      leftrightharpoons: '\u21CB',
+      leftrightsquigarrow: '\u21AD',
+      LeftRightVector: '\u294E',
+      LeftTee: '\u22A3',
+      LeftTeeArrow: '\u21A4',
+      LeftTeeVector: '\u295A',
+      leftthreetimes: '\u22CB',
+      LeftTriangle: '\u22B2',
+      LeftTriangleBar: '\u29CF',
+      LeftTriangleEqual: '\u22B4',
+      LeftUpDownVector: '\u2951',
+      LeftUpTeeVector: '\u2960',
+      LeftUpVector: '\u21BF',
+      LeftUpVectorBar: '\u2958',
+      LeftVector: '\u21BC',
+      LeftVectorBar: '\u2952',
+      lEg: '\u2A8B',
+      leg: '\u22DA',
+      leq: '\u2264',
+      leqq: '\u2266',
+      leqslant: '\u2A7D',
+      les: '\u2A7D',
+      lescc: '\u2AA8',
+      lesdot: '\u2A7F',
+      lesdoto: '\u2A81',
+      lesdotor: '\u2A83',
+      lesg: '\u22DA\uFE00',
+      lesges: '\u2A93',
+      lessapprox: '\u2A85',
+      lessdot: '\u22D6',
+      lesseqgtr: '\u22DA',
+      lesseqqgtr: '\u2A8B',
+      LessEqualGreater: '\u22DA',
+      LessFullEqual: '\u2266',
+      LessGreater: '\u2276',
+      lessgtr: '\u2276',
+      LessLess: '\u2AA1',
+      lesssim: '\u2272',
+      LessSlantEqual: '\u2A7D',
+      LessTilde: '\u2272',
+      lfisht: '\u297C',
+      lfloor: '\u230A',
+      Lfr: '\uD835\uDD0F',
+      lfr: '\uD835\uDD29',
+      lg: '\u2276',
+      lgE: '\u2A91',
+      lHar: '\u2962',
+      lhard: '\u21BD',
+      lharu: '\u21BC',
+      lharul: '\u296A',
+      lhblk: '\u2584',
+      LJcy: '\u0409',
+      ljcy: '\u0459',
+      Ll: '\u22D8',
+      ll: '\u226A',
+      llarr: '\u21C7',
+      llcorner: '\u231E',
+      Lleftarrow: '\u21DA',
+      llhard: '\u296B',
+      lltri: '\u25FA',
+      Lmidot: '\u013F',
+      lmidot: '\u0140',
+      lmoust: '\u23B0',
+      lmoustache: '\u23B0',
+      lnap: '\u2A89',
+      lnapprox: '\u2A89',
+      lnE: '\u2268',
+      lne: '\u2A87',
+      lneq: '\u2A87',
+      lneqq: '\u2268',
+      lnsim: '\u22E6',
+      loang: '\u27EC',
+      loarr: '\u21FD',
+      lobrk: '\u27E6',
+      LongLeftArrow: '\u27F5',
+      Longleftarrow: '\u27F8',
+      longleftarrow: '\u27F5',
+      LongLeftRightArrow: '\u27F7',
+      Longleftrightarrow: '\u27FA',
+      longleftrightarrow: '\u27F7',
+      longmapsto: '\u27FC',
+      LongRightArrow: '\u27F6',
+      Longrightarrow: '\u27F9',
+      longrightarrow: '\u27F6',
+      looparrowleft: '\u21AB',
+      looparrowright: '\u21AC',
+      lopar: '\u2985',
+      Lopf: '\uD835\uDD43',
+      lopf: '\uD835\uDD5D',
+      loplus: '\u2A2D',
+      lotimes: '\u2A34',
+      lowast: '\u2217',
+      lowbar: '\u005F',
+      LowerLeftArrow: '\u2199',
+      LowerRightArrow: '\u2198',
+      loz: '\u25CA',
+      lozenge: '\u25CA',
+      lozf: '\u29EB',
+      lpar: '\u0028',
+      lparlt: '\u2993',
+      lrarr: '\u21C6',
+      lrcorner: '\u231F',
+      lrhar: '\u21CB',
+      lrhard: '\u296D',
+      lrm: '\u200E',
+      lrtri: '\u22BF',
+      lsaquo: '\u2039',
+      Lscr: '\u2112',
+      lscr: '\uD835\uDCC1',
+      Lsh: '\u21B0',
+      lsh: '\u21B0',
+      lsim: '\u2272',
+      lsime: '\u2A8D',
+      lsimg: '\u2A8F',
+      lsqb: '\u005B',
+      lsquo: '\u2018',
+      lsquor: '\u201A',
+      Lstrok: '\u0141',
+      lstrok: '\u0142',
+      Lt: '\u226A',
+      LT: '\u003C',
+      lt: '\u003C',
+      ltcc: '\u2AA6',
+      ltcir: '\u2A79',
+      ltdot: '\u22D6',
+      lthree: '\u22CB',
+      ltimes: '\u22C9',
+      ltlarr: '\u2976',
+      ltquest: '\u2A7B',
+      ltri: '\u25C3',
+      ltrie: '\u22B4',
+      ltrif: '\u25C2',
+      ltrPar: '\u2996',
+      lurdshar: '\u294A',
+      luruhar: '\u2966',
+      lvertneqq: '\u2268\uFE00',
+      lvnE: '\u2268\uFE00',
+      macr: '\u00AF',
+      male: '\u2642',
+      malt: '\u2720',
+      maltese: '\u2720',
+      Map: '\u2905',
+      map: '\u21A6',
+      mapsto: '\u21A6',
+      mapstodown: '\u21A7',
+      mapstoleft: '\u21A4',
+      mapstoup: '\u21A5',
+      marker: '\u25AE',
+      mcomma: '\u2A29',
+      Mcy: '\u041C',
+      mcy: '\u043C',
+      mdash: '\u2014',
+      mDDot: '\u223A',
+      measuredangle: '\u2221',
+      MediumSpace: '\u205F',
+      Mellintrf: '\u2133',
+      Mfr: '\uD835\uDD10',
+      mfr: '\uD835\uDD2A',
+      mho: '\u2127',
+      micro: '\u00B5',
+      mid: '\u2223',
+      midast: '\u002A',
+      midcir: '\u2AF0',
+      middot: '\u00B7',
+      minus: '\u2212',
+      minusb: '\u229F',
+      minusd: '\u2238',
+      minusdu: '\u2A2A',
+      MinusPlus: '\u2213',
+      mlcp: '\u2ADB',
+      mldr: '\u2026',
+      mnplus: '\u2213',
+      models: '\u22A7',
+      Mopf: '\uD835\uDD44',
+      mopf: '\uD835\uDD5E',
+      mp: '\u2213',
+      Mscr: '\u2133',
+      mscr: '\uD835\uDCC2',
+      mstpos: '\u223E',
+      Mu: '\u039C',
+      mu: '\u03BC',
+      multimap: '\u22B8',
+      mumap: '\u22B8',
+      nabla: '\u2207',
+      Nacute: '\u0143',
+      nacute: '\u0144',
+      nang: '\u2220\u20D2',
+      nap: '\u2249',
+      napE: '\u2A70\u0338',
+      napid: '\u224B\u0338',
+      napos: '\u0149',
+      napprox: '\u2249',
+      natur: '\u266E',
+      natural: '\u266E',
+      naturals: '\u2115',
+      nbsp: '\u00A0',
+      nbump: '\u224E\u0338',
+      nbumpe: '\u224F\u0338',
+      ncap: '\u2A43',
+      Ncaron: '\u0147',
+      ncaron: '\u0148',
+      Ncedil: '\u0145',
+      ncedil: '\u0146',
+      ncong: '\u2247',
+      ncongdot: '\u2A6D\u0338',
+      ncup: '\u2A42',
+      Ncy: '\u041D',
+      ncy: '\u043D',
+      ndash: '\u2013',
+      ne: '\u2260',
+      nearhk: '\u2924',
+      neArr: '\u21D7',
+      nearr: '\u2197',
+      nearrow: '\u2197',
+      nedot: '\u2250\u0338',
+      NegativeMediumSpace: '\u200B',
+      NegativeThickSpace: '\u200B',
+      NegativeThinSpace: '\u200B',
+      NegativeVeryThinSpace: '\u200B',
+      nequiv: '\u2262',
+      nesear: '\u2928',
+      nesim: '\u2242\u0338',
+      NestedGreaterGreater: '\u226B',
+      NestedLessLess: '\u226A',
+      NewLine: '\u000A',
+      nexist: '\u2204',
+      nexists: '\u2204',
+      Nfr: '\uD835\uDD11',
+      nfr: '\uD835\uDD2B',
+      ngE: '\u2267\u0338',
+      nge: '\u2271',
+      ngeq: '\u2271',
+      ngeqq: '\u2267\u0338',
+      ngeqslant: '\u2A7E\u0338',
+      nges: '\u2A7E\u0338',
+      nGg: '\u22D9\u0338',
+      ngsim: '\u2275',
+      nGt: '\u226B\u20D2',
+      ngt: '\u226F',
+      ngtr: '\u226F',
+      nGtv: '\u226B\u0338',
+      nhArr: '\u21CE',
+      nharr: '\u21AE',
+      nhpar: '\u2AF2',
+      ni: '\u220B',
+      nis: '\u22FC',
+      nisd: '\u22FA',
+      niv: '\u220B',
+      NJcy: '\u040A',
+      njcy: '\u045A',
+      nlArr: '\u21CD',
+      nlarr: '\u219A',
+      nldr: '\u2025',
+      nlE: '\u2266\u0338',
+      nle: '\u2270',
+      nLeftarrow: '\u21CD',
+      nleftarrow: '\u219A',
+      nLeftrightarrow: '\u21CE',
+      nleftrightarrow: '\u21AE',
+      nleq: '\u2270',
+      nleqq: '\u2266\u0338',
+      nleqslant: '\u2A7D\u0338',
+      nles: '\u2A7D\u0338',
+      nless: '\u226E',
+      nLl: '\u22D8\u0338',
+      nlsim: '\u2274',
+      nLt: '\u226A\u20D2',
+      nlt: '\u226E',
+      nltri: '\u22EA',
+      nltrie: '\u22EC',
+      nLtv: '\u226A\u0338',
+      nmid: '\u2224',
+      NoBreak: '\u2060',
+      NonBreakingSpace: '\u00A0',
+      Nopf: '\u2115',
+      nopf: '\uD835\uDD5F',
+      Not: '\u2AEC',
+      not: '\u00AC',
+      NotCongruent: '\u2262',
+      NotCupCap: '\u226D',
+      NotDoubleVerticalBar: '\u2226',
+      NotElement: '\u2209',
+      NotEqual: '\u2260',
+      NotEqualTilde: '\u2242\u0338',
+      NotExists: '\u2204',
+      NotGreater: '\u226F',
+      NotGreaterEqual: '\u2271',
+      NotGreaterFullEqual: '\u2267\u0338',
+      NotGreaterGreater: '\u226B\u0338',
+      NotGreaterLess: '\u2279',
+      NotGreaterSlantEqual: '\u2A7E\u0338',
+      NotGreaterTilde: '\u2275',
+      NotHumpDownHump: '\u224E\u0338',
+      NotHumpEqual: '\u224F\u0338',
+      notin: '\u2209',
+      notindot: '\u22F5\u0338',
+      notinE: '\u22F9\u0338',
+      notinva: '\u2209',
+      notinvb: '\u22F7',
+      notinvc: '\u22F6',
+      NotLeftTriangle: '\u22EA',
+      NotLeftTriangleBar: '\u29CF\u0338',
+      NotLeftTriangleEqual: '\u22EC',
+      NotLess: '\u226E',
+      NotLessEqual: '\u2270',
+      NotLessGreater: '\u2278',
+      NotLessLess: '\u226A\u0338',
+      NotLessSlantEqual: '\u2A7D\u0338',
+      NotLessTilde: '\u2274',
+      NotNestedGreaterGreater: '\u2AA2\u0338',
+      NotNestedLessLess: '\u2AA1\u0338',
+      notni: '\u220C',
+      notniva: '\u220C',
+      notnivb: '\u22FE',
+      notnivc: '\u22FD',
+      NotPrecedes: '\u2280',
+      NotPrecedesEqual: '\u2AAF\u0338',
+      NotPrecedesSlantEqual: '\u22E0',
+      NotReverseElement: '\u220C',
+      NotRightTriangle: '\u22EB',
+      NotRightTriangleBar: '\u29D0\u0338',
+      NotRightTriangleEqual: '\u22ED',
+      NotSquareSubset: '\u228F\u0338',
+      NotSquareSubsetEqual: '\u22E2',
+      NotSquareSuperset: '\u2290\u0338',
+      NotSquareSupersetEqual: '\u22E3',
+      NotSubset: '\u2282\u20D2',
+      NotSubsetEqual: '\u2288',
+      NotSucceeds: '\u2281',
+      NotSucceedsEqual: '\u2AB0\u0338',
+      NotSucceedsSlantEqual: '\u22E1',
+      NotSucceedsTilde: '\u227F\u0338',
+      NotSuperset: '\u2283\u20D2',
+      NotSupersetEqual: '\u2289',
+      NotTilde: '\u2241',
+      NotTildeEqual: '\u2244',
+      NotTildeFullEqual: '\u2247',
+      NotTildeTilde: '\u2249',
+      NotVerticalBar: '\u2224',
+      npar: '\u2226',
+      nparallel: '\u2226',
+      nparsl: '\u2AFD\u20E5',
+      npart: '\u2202\u0338',
+      npolint: '\u2A14',
+      npr: '\u2280',
+      nprcue: '\u22E0',
+      npre: '\u2AAF\u0338',
+      nprec: '\u2280',
+      npreceq: '\u2AAF\u0338',
+      nrArr: '\u21CF',
+      nrarr: '\u219B',
+      nrarrc: '\u2933\u0338',
+      nrarrw: '\u219D\u0338',
+      nRightarrow: '\u21CF',
+      nrightarrow: '\u219B',
+      nrtri: '\u22EB',
+      nrtrie: '\u22ED',
+      nsc: '\u2281',
+      nsccue: '\u22E1',
+      nsce: '\u2AB0\u0338',
+      Nscr: '\uD835\uDCA9',
+      nscr: '\uD835\uDCC3',
+      nshortmid: '\u2224',
+      nshortparallel: '\u2226',
+      nsim: '\u2241',
+      nsime: '\u2244',
+      nsimeq: '\u2244',
+      nsmid: '\u2224',
+      nspar: '\u2226',
+      nsqsube: '\u22E2',
+      nsqsupe: '\u22E3',
+      nsub: '\u2284',
+      nsubE: '\u2AC5\u0338',
+      nsube: '\u2288',
+      nsubset: '\u2282\u20D2',
+      nsubseteq: '\u2288',
+      nsubseteqq: '\u2AC5\u0338',
+      nsucc: '\u2281',
+      nsucceq: '\u2AB0\u0338',
+      nsup: '\u2285',
+      nsupE: '\u2AC6\u0338',
+      nsupe: '\u2289',
+      nsupset: '\u2283\u20D2',
+      nsupseteq: '\u2289',
+      nsupseteqq: '\u2AC6\u0338',
+      ntgl: '\u2279',
+      Ntilde: '\u00D1',
+      ntilde: '\u00F1',
+      ntlg: '\u2278',
+      ntriangleleft: '\u22EA',
+      ntrianglelefteq: '\u22EC',
+      ntriangleright: '\u22EB',
+      ntrianglerighteq: '\u22ED',
+      Nu: '\u039D',
+      nu: '\u03BD',
+      num: '\u0023',
+      numero: '\u2116',
+      numsp: '\u2007',
+      nvap: '\u224D\u20D2',
+      nVDash: '\u22AF',
+      nVdash: '\u22AE',
+      nvDash: '\u22AD',
+      nvdash: '\u22AC',
+      nvge: '\u2265\u20D2',
+      nvgt: '\u003E\u20D2',
+      nvHarr: '\u2904',
+      nvinfin: '\u29DE',
+      nvlArr: '\u2902',
+      nvle: '\u2264\u20D2',
+      nvlt: '\u003C\u20D2',
+      nvltrie: '\u22B4\u20D2',
+      nvrArr: '\u2903',
+      nvrtrie: '\u22B5\u20D2',
+      nvsim: '\u223C\u20D2',
+      nwarhk: '\u2923',
+      nwArr: '\u21D6',
+      nwarr: '\u2196',
+      nwarrow: '\u2196',
+      nwnear: '\u2927',
+      Oacute: '\u00D3',
+      oacute: '\u00F3',
+      oast: '\u229B',
+      ocir: '\u229A',
+      Ocirc: '\u00D4',
+      ocirc: '\u00F4',
+      Ocy: '\u041E',
+      ocy: '\u043E',
+      odash: '\u229D',
+      Odblac: '\u0150',
+      odblac: '\u0151',
+      odiv: '\u2A38',
+      odot: '\u2299',
+      odsold: '\u29BC',
+      OElig: '\u0152',
+      oelig: '\u0153',
+      ofcir: '\u29BF',
+      Ofr: '\uD835\uDD12',
+      ofr: '\uD835\uDD2C',
+      ogon: '\u02DB',
+      Ograve: '\u00D2',
+      ograve: '\u00F2',
+      ogt: '\u29C1',
+      ohbar: '\u29B5',
+      ohm: '\u03A9',
+      oint: '\u222E',
+      olarr: '\u21BA',
+      olcir: '\u29BE',
+      olcross: '\u29BB',
+      oline: '\u203E',
+      olt: '\u29C0',
+      Omacr: '\u014C',
+      omacr: '\u014D',
+      Omega: '\u03A9',
+      omega: '\u03C9',
+      Omicron: '\u039F',
+      omicron: '\u03BF',
+      omid: '\u29B6',
+      ominus: '\u2296',
+      Oopf: '\uD835\uDD46',
+      oopf: '\uD835\uDD60',
+      opar: '\u29B7',
+      OpenCurlyDoubleQuote: '\u201C',
+      OpenCurlyQuote: '\u2018',
+      operp: '\u29B9',
+      oplus: '\u2295',
+      Or: '\u2A54',
+      or: '\u2228',
+      orarr: '\u21BB',
+      ord: '\u2A5D',
+      order: '\u2134',
+      orderof: '\u2134',
+      ordf: '\u00AA',
+      ordm: '\u00BA',
+      origof: '\u22B6',
+      oror: '\u2A56',
+      orslope: '\u2A57',
+      orv: '\u2A5B',
+      oS: '\u24C8',
+      Oscr: '\uD835\uDCAA',
+      oscr: '\u2134',
+      Oslash: '\u00D8',
+      oslash: '\u00F8',
+      osol: '\u2298',
+      Otilde: '\u00D5',
+      otilde: '\u00F5',
+      Otimes: '\u2A37',
+      otimes: '\u2297',
+      otimesas: '\u2A36',
+      Ouml: '\u00D6',
+      ouml: '\u00F6',
+      ovbar: '\u233D',
+      OverBar: '\u203E',
+      OverBrace: '\u23DE',
+      OverBracket: '\u23B4',
+      OverParenthesis: '\u23DC',
+      par: '\u2225',
+      para: '\u00B6',
+      parallel: '\u2225',
+      parsim: '\u2AF3',
+      parsl: '\u2AFD',
+      part: '\u2202',
+      PartialD: '\u2202',
+      Pcy: '\u041F',
+      pcy: '\u043F',
+      percnt: '\u0025',
+      period: '\u002E',
+      permil: '\u2030',
+      perp: '\u22A5',
+      pertenk: '\u2031',
+      Pfr: '\uD835\uDD13',
+      pfr: '\uD835\uDD2D',
+      Phi: '\u03A6',
+      phi: '\u03C6',
+      phiv: '\u03D5',
+      phmmat: '\u2133',
+      phone: '\u260E',
+      Pi: '\u03A0',
+      pi: '\u03C0',
+      pitchfork: '\u22D4',
+      piv: '\u03D6',
+      planck: '\u210F',
+      planckh: '\u210E',
+      plankv: '\u210F',
+      plus: '\u002B',
+      plusacir: '\u2A23',
+      plusb: '\u229E',
+      pluscir: '\u2A22',
+      plusdo: '\u2214',
+      plusdu: '\u2A25',
+      pluse: '\u2A72',
+      PlusMinus: '\u00B1',
+      plusmn: '\u00B1',
+      plussim: '\u2A26',
+      plustwo: '\u2A27',
+      pm: '\u00B1',
+      Poincareplane: '\u210C',
+      pointint: '\u2A15',
+      Popf: '\u2119',
+      popf: '\uD835\uDD61',
+      pound: '\u00A3',
+      Pr: '\u2ABB',
+      pr: '\u227A',
+      prap: '\u2AB7',
+      prcue: '\u227C',
+      prE: '\u2AB3',
+      pre: '\u2AAF',
+      prec: '\u227A',
+      precapprox: '\u2AB7',
+      preccurlyeq: '\u227C',
+      Precedes: '\u227A',
+      PrecedesEqual: '\u2AAF',
+      PrecedesSlantEqual: '\u227C',
+      PrecedesTilde: '\u227E',
+      preceq: '\u2AAF',
+      precnapprox: '\u2AB9',
+      precneqq: '\u2AB5',
+      precnsim: '\u22E8',
+      precsim: '\u227E',
+      Prime: '\u2033',
+      prime: '\u2032',
+      primes: '\u2119',
+      prnap: '\u2AB9',
+      prnE: '\u2AB5',
+      prnsim: '\u22E8',
+      prod: '\u220F',
+      Product: '\u220F',
+      profalar: '\u232E',
+      profline: '\u2312',
+      profsurf: '\u2313',
+      prop: '\u221D',
+      Proportion: '\u2237',
+      Proportional: '\u221D',
+      propto: '\u221D',
+      prsim: '\u227E',
+      prurel: '\u22B0',
+      Pscr: '\uD835\uDCAB',
+      pscr: '\uD835\uDCC5',
+      Psi: '\u03A8',
+      psi: '\u03C8',
+      puncsp: '\u2008',
+      Qfr: '\uD835\uDD14',
+      qfr: '\uD835\uDD2E',
+      qint: '\u2A0C',
+      Qopf: '\u211A',
+      qopf: '\uD835\uDD62',
+      qprime: '\u2057',
+      Qscr: '\uD835\uDCAC',
+      qscr: '\uD835\uDCC6',
+      quaternions: '\u210D',
+      quatint: '\u2A16',
+      quest: '\u003F',
+      questeq: '\u225F',
+      QUOT: '\u0022',
+      quot: '\u0022',
+      rAarr: '\u21DB',
+      race: '\u223D\u0331',
+      Racute: '\u0154',
+      racute: '\u0155',
+      radic: '\u221A',
+      raemptyv: '\u29B3',
+      Rang: '\u27EB',
+      rang: '\u27E9',
+      rangd: '\u2992',
+      range: '\u29A5',
+      rangle: '\u27E9',
+      raquo: '\u00BB',
+      Rarr: '\u21A0',
+      rArr: '\u21D2',
+      rarr: '\u2192',
+      rarrap: '\u2975',
+      rarrb: '\u21E5',
+      rarrbfs: '\u2920',
+      rarrc: '\u2933',
+      rarrfs: '\u291E',
+      rarrhk: '\u21AA',
+      rarrlp: '\u21AC',
+      rarrpl: '\u2945',
+      rarrsim: '\u2974',
+      Rarrtl: '\u2916',
+      rarrtl: '\u21A3',
+      rarrw: '\u219D',
+      rAtail: '\u291C',
+      ratail: '\u291A',
+      ratio: '\u2236',
+      rationals: '\u211A',
+      RBarr: '\u2910',
+      rBarr: '\u290F',
+      rbarr: '\u290D',
+      rbbrk: '\u2773',
+      rbrace: '\u007D',
+      rbrack: '\u005D',
+      rbrke: '\u298C',
+      rbrksld: '\u298E',
+      rbrkslu: '\u2990',
+      Rcaron: '\u0158',
+      rcaron: '\u0159',
+      Rcedil: '\u0156',
+      rcedil: '\u0157',
+      rceil: '\u2309',
+      rcub: '\u007D',
+      Rcy: '\u0420',
+      rcy: '\u0440',
+      rdca: '\u2937',
+      rdldhar: '\u2969',
+      rdquo: '\u201D',
+      rdquor: '\u201D',
+      rdsh: '\u21B3',
+      Re: '\u211C',
+      real: '\u211C',
+      realine: '\u211B',
+      realpart: '\u211C',
+      reals: '\u211D',
+      rect: '\u25AD',
+      REG: '\u00AE',
+      reg: '\u00AE',
+      ReverseElement: '\u220B',
+      ReverseEquilibrium: '\u21CB',
+      ReverseUpEquilibrium: '\u296F',
+      rfisht: '\u297D',
+      rfloor: '\u230B',
+      Rfr: '\u211C',
+      rfr: '\uD835\uDD2F',
+      rHar: '\u2964',
+      rhard: '\u21C1',
+      rharu: '\u21C0',
+      rharul: '\u296C',
+      Rho: '\u03A1',
+      rho: '\u03C1',
+      rhov: '\u03F1',
+      RightAngleBracket: '\u27E9',
+      RightArrow: '\u2192',
+      Rightarrow: '\u21D2',
+      rightarrow: '\u2192',
+      RightArrowBar: '\u21E5',
+      RightArrowLeftArrow: '\u21C4',
+      rightarrowtail: '\u21A3',
+      RightCeiling: '\u2309',
+      RightDoubleBracket: '\u27E7',
+      RightDownTeeVector: '\u295D',
+      RightDownVector: '\u21C2',
+      RightDownVectorBar: '\u2955',
+      RightFloor: '\u230B',
+      rightharpoondown: '\u21C1',
+      rightharpoonup: '\u21C0',
+      rightleftarrows: '\u21C4',
+      rightleftharpoons: '\u21CC',
+      rightrightarrows: '\u21C9',
+      rightsquigarrow: '\u219D',
+      RightTee: '\u22A2',
+      RightTeeArrow: '\u21A6',
+      RightTeeVector: '\u295B',
+      rightthreetimes: '\u22CC',
+      RightTriangle: '\u22B3',
+      RightTriangleBar: '\u29D0',
+      RightTriangleEqual: '\u22B5',
+      RightUpDownVector: '\u294F',
+      RightUpTeeVector: '\u295C',
+      RightUpVector: '\u21BE',
+      RightUpVectorBar: '\u2954',
+      RightVector: '\u21C0',
+      RightVectorBar: '\u2953',
+      ring: '\u02DA',
+      risingdotseq: '\u2253',
+      rlarr: '\u21C4',
+      rlhar: '\u21CC',
+      rlm: '\u200F',
+      rmoust: '\u23B1',
+      rmoustache: '\u23B1',
+      rnmid: '\u2AEE',
+      roang: '\u27ED',
+      roarr: '\u21FE',
+      robrk: '\u27E7',
+      ropar: '\u2986',
+      Ropf: '\u211D',
+      ropf: '\uD835\uDD63',
+      roplus: '\u2A2E',
+      rotimes: '\u2A35',
+      RoundImplies: '\u2970',
+      rpar: '\u0029',
+      rpargt: '\u2994',
+      rppolint: '\u2A12',
+      rrarr: '\u21C9',
+      Rrightarrow: '\u21DB',
+      rsaquo: '\u203A',
+      Rscr: '\u211B',
+      rscr: '\uD835\uDCC7',
+      Rsh: '\u21B1',
+      rsh: '\u21B1',
+      rsqb: '\u005D',
+      rsquo: '\u2019',
+      rsquor: '\u2019',
+      rthree: '\u22CC',
+      rtimes: '\u22CA',
+      rtri: '\u25B9',
+      rtrie: '\u22B5',
+      rtrif: '\u25B8',
+      rtriltri: '\u29CE',
+      RuleDelayed: '\u29F4',
+      ruluhar: '\u2968',
+      rx: '\u211E',
+      Sacute: '\u015A',
+      sacute: '\u015B',
+      sbquo: '\u201A',
+      Sc: '\u2ABC',
+      sc: '\u227B',
+      scap: '\u2AB8',
+      Scaron: '\u0160',
+      scaron: '\u0161',
+      sccue: '\u227D',
+      scE: '\u2AB4',
+      sce: '\u2AB0',
+      Scedil: '\u015E',
+      scedil: '\u015F',
+      Scirc: '\u015C',
+      scirc: '\u015D',
+      scnap: '\u2ABA',
+      scnE: '\u2AB6',
+      scnsim: '\u22E9',
+      scpolint: '\u2A13',
+      scsim: '\u227F',
+      Scy: '\u0421',
+      scy: '\u0441',
+      sdot: '\u22C5',
+      sdotb: '\u22A1',
+      sdote: '\u2A66',
+      searhk: '\u2925',
+      seArr: '\u21D8',
+      searr: '\u2198',
+      searrow: '\u2198',
+      sect: '\u00A7',
+      semi: '\u003B',
+      seswar: '\u2929',
+      setminus: '\u2216',
+      setmn: '\u2216',
+      sext: '\u2736',
+      Sfr: '\uD835\uDD16',
+      sfr: '\uD835\uDD30',
+      sfrown: '\u2322',
+      sharp: '\u266F',
+      SHCHcy: '\u0429',
+      shchcy: '\u0449',
+      SHcy: '\u0428',
+      shcy: '\u0448',
+      ShortDownArrow: '\u2193',
+      ShortLeftArrow: '\u2190',
+      shortmid: '\u2223',
+      shortparallel: '\u2225',
+      ShortRightArrow: '\u2192',
+      ShortUpArrow: '\u2191',
+      shy: '\u00AD',
+      Sigma: '\u03A3',
+      sigma: '\u03C3',
+      sigmaf: '\u03C2',
+      sigmav: '\u03C2',
+      sim: '\u223C',
+      simdot: '\u2A6A',
+      sime: '\u2243',
+      simeq: '\u2243',
+      simg: '\u2A9E',
+      simgE: '\u2AA0',
+      siml: '\u2A9D',
+      simlE: '\u2A9F',
+      simne: '\u2246',
+      simplus: '\u2A24',
+      simrarr: '\u2972',
+      slarr: '\u2190',
+      SmallCircle: '\u2218',
+      smallsetminus: '\u2216',
+      smashp: '\u2A33',
+      smeparsl: '\u29E4',
+      smid: '\u2223',
+      smile: '\u2323',
+      smt: '\u2AAA',
+      smte: '\u2AAC',
+      smtes: '\u2AAC\uFE00',
+      SOFTcy: '\u042C',
+      softcy: '\u044C',
+      sol: '\u002F',
+      solb: '\u29C4',
+      solbar: '\u233F',
+      Sopf: '\uD835\uDD4A',
+      sopf: '\uD835\uDD64',
+      spades: '\u2660',
+      spadesuit: '\u2660',
+      spar: '\u2225',
+      sqcap: '\u2293',
+      sqcaps: '\u2293\uFE00',
+      sqcup: '\u2294',
+      sqcups: '\u2294\uFE00',
+      Sqrt: '\u221A',
+      sqsub: '\u228F',
+      sqsube: '\u2291',
+      sqsubset: '\u228F',
+      sqsubseteq: '\u2291',
+      sqsup: '\u2290',
+      sqsupe: '\u2292',
+      sqsupset: '\u2290',
+      sqsupseteq: '\u2292',
+      squ: '\u25A1',
+      Square: '\u25A1',
+      square: '\u25A1',
+      SquareIntersection: '\u2293',
+      SquareSubset: '\u228F',
+      SquareSubsetEqual: '\u2291',
+      SquareSuperset: '\u2290',
+      SquareSupersetEqual: '\u2292',
+      SquareUnion: '\u2294',
+      squarf: '\u25AA',
+      squf: '\u25AA',
+      srarr: '\u2192',
+      Sscr: '\uD835\uDCAE',
+      sscr: '\uD835\uDCC8',
+      ssetmn: '\u2216',
+      ssmile: '\u2323',
+      sstarf: '\u22C6',
+      Star: '\u22C6',
+      star: '\u2606',
+      starf: '\u2605',
+      straightepsilon: '\u03F5',
+      straightphi: '\u03D5',
+      strns: '\u00AF',
+      Sub: '\u22D0',
+      sub: '\u2282',
+      subdot: '\u2ABD',
+      subE: '\u2AC5',
+      sube: '\u2286',
+      subedot: '\u2AC3',
+      submult: '\u2AC1',
+      subnE: '\u2ACB',
+      subne: '\u228A',
+      subplus: '\u2ABF',
+      subrarr: '\u2979',
+      Subset: '\u22D0',
+      subset: '\u2282',
+      subseteq: '\u2286',
+      subseteqq: '\u2AC5',
+      SubsetEqual: '\u2286',
+      subsetneq: '\u228A',
+      subsetneqq: '\u2ACB',
+      subsim: '\u2AC7',
+      subsub: '\u2AD5',
+      subsup: '\u2AD3',
+      succ: '\u227B',
+      succapprox: '\u2AB8',
+      succcurlyeq: '\u227D',
+      Succeeds: '\u227B',
+      SucceedsEqual: '\u2AB0',
+      SucceedsSlantEqual: '\u227D',
+      SucceedsTilde: '\u227F',
+      succeq: '\u2AB0',
+      succnapprox: '\u2ABA',
+      succneqq: '\u2AB6',
+      succnsim: '\u22E9',
+      succsim: '\u227F',
+      SuchThat: '\u220B',
+      Sum: '\u2211',
+      sum: '\u2211',
+      sung: '\u266A',
+      Sup: '\u22D1',
+      sup: '\u2283',
+      sup1: '\u00B9',
+      sup2: '\u00B2',
+      sup3: '\u00B3',
+      supdot: '\u2ABE',
+      supdsub: '\u2AD8',
+      supE: '\u2AC6',
+      supe: '\u2287',
+      supedot: '\u2AC4',
+      Superset: '\u2283',
+      SupersetEqual: '\u2287',
+      suphsol: '\u27C9',
+      suphsub: '\u2AD7',
+      suplarr: '\u297B',
+      supmult: '\u2AC2',
+      supnE: '\u2ACC',
+      supne: '\u228B',
+      supplus: '\u2AC0',
+      Supset: '\u22D1',
+      supset: '\u2283',
+      supseteq: '\u2287',
+      supseteqq: '\u2AC6',
+      supsetneq: '\u228B',
+      supsetneqq: '\u2ACC',
+      supsim: '\u2AC8',
+      supsub: '\u2AD4',
+      supsup: '\u2AD6',
+      swarhk: '\u2926',
+      swArr: '\u21D9',
+      swarr: '\u2199',
+      swarrow: '\u2199',
+      swnwar: '\u292A',
+      szlig: '\u00DF',
+      Tab: '\u0009',
+      target: '\u2316',
+      Tau: '\u03A4',
+      tau: '\u03C4',
+      tbrk: '\u23B4',
+      Tcaron: '\u0164',
+      tcaron: '\u0165',
+      Tcedil: '\u0162',
+      tcedil: '\u0163',
+      Tcy: '\u0422',
+      tcy: '\u0442',
+      tdot: '\u20DB',
+      telrec: '\u2315',
+      Tfr: '\uD835\uDD17',
+      tfr: '\uD835\uDD31',
+      there4: '\u2234',
+      Therefore: '\u2234',
+      therefore: '\u2234',
+      Theta: '\u0398',
+      theta: '\u03B8',
+      thetasym: '\u03D1',
+      thetav: '\u03D1',
+      thickapprox: '\u2248',
+      thicksim: '\u223C',
+      ThickSpace: '\u205F\u200A',
+      thinsp: '\u2009',
+      ThinSpace: '\u2009',
+      thkap: '\u2248',
+      thksim: '\u223C',
+      THORN: '\u00DE',
+      thorn: '\u00FE',
+      Tilde: '\u223C',
+      tilde: '\u02DC',
+      TildeEqual: '\u2243',
+      TildeFullEqual: '\u2245',
+      TildeTilde: '\u2248',
+      times: '\u00D7',
+      timesb: '\u22A0',
+      timesbar: '\u2A31',
+      timesd: '\u2A30',
+      tint: '\u222D',
+      toea: '\u2928',
+      top: '\u22A4',
+      topbot: '\u2336',
+      topcir: '\u2AF1',
+      Topf: '\uD835\uDD4B',
+      topf: '\uD835\uDD65',
+      topfork: '\u2ADA',
+      tosa: '\u2929',
+      tprime: '\u2034',
+      TRADE: '\u2122',
+      trade: '\u2122',
+      triangle: '\u25B5',
+      triangledown: '\u25BF',
+      triangleleft: '\u25C3',
+      trianglelefteq: '\u22B4',
+      triangleq: '\u225C',
+      triangleright: '\u25B9',
+      trianglerighteq: '\u22B5',
+      tridot: '\u25EC',
+      trie: '\u225C',
+      triminus: '\u2A3A',
+      TripleDot: '\u20DB',
+      triplus: '\u2A39',
+      trisb: '\u29CD',
+      tritime: '\u2A3B',
+      trpezium: '\u23E2',
+      Tscr: '\uD835\uDCAF',
+      tscr: '\uD835\uDCC9',
+      TScy: '\u0426',
+      tscy: '\u0446',
+      TSHcy: '\u040B',
+      tshcy: '\u045B',
+      Tstrok: '\u0166',
+      tstrok: '\u0167',
+      twixt: '\u226C',
+      twoheadleftarrow: '\u219E',
+      twoheadrightarrow: '\u21A0',
+      Uacute: '\u00DA',
+      uacute: '\u00FA',
+      Uarr: '\u219F',
+      uArr: '\u21D1',
+      uarr: '\u2191',
+      Uarrocir: '\u2949',
+      Ubrcy: '\u040E',
+      ubrcy: '\u045E',
+      Ubreve: '\u016C',
+      ubreve: '\u016D',
+      Ucirc: '\u00DB',
+      ucirc: '\u00FB',
+      Ucy: '\u0423',
+      ucy: '\u0443',
+      udarr: '\u21C5',
+      Udblac: '\u0170',
+      udblac: '\u0171',
+      udhar: '\u296E',
+      ufisht: '\u297E',
+      Ufr: '\uD835\uDD18',
+      ufr: '\uD835\uDD32',
+      Ugrave: '\u00D9',
+      ugrave: '\u00F9',
+      uHar: '\u2963',
+      uharl: '\u21BF',
+      uharr: '\u21BE',
+      uhblk: '\u2580',
+      ulcorn: '\u231C',
+      ulcorner: '\u231C',
+      ulcrop: '\u230F',
+      ultri: '\u25F8',
+      Umacr: '\u016A',
+      umacr: '\u016B',
+      uml: '\u00A8',
+      UnderBar: '\u005F',
+      UnderBrace: '\u23DF',
+      UnderBracket: '\u23B5',
+      UnderParenthesis: '\u23DD',
+      Union: '\u22C3',
+      UnionPlus: '\u228E',
+      Uogon: '\u0172',
+      uogon: '\u0173',
+      Uopf: '\uD835\uDD4C',
+      uopf: '\uD835\uDD66',
+      UpArrow: '\u2191',
+      Uparrow: '\u21D1',
+      uparrow: '\u2191',
+      UpArrowBar: '\u2912',
+      UpArrowDownArrow: '\u21C5',
+      UpDownArrow: '\u2195',
+      Updownarrow: '\u21D5',
+      updownarrow: '\u2195',
+      UpEquilibrium: '\u296E',
+      upharpoonleft: '\u21BF',
+      upharpoonright: '\u21BE',
+      uplus: '\u228E',
+      UpperLeftArrow: '\u2196',
+      UpperRightArrow: '\u2197',
+      Upsi: '\u03D2',
+      upsi: '\u03C5',
+      upsih: '\u03D2',
+      Upsilon: '\u03A5',
+      upsilon: '\u03C5',
+      UpTee: '\u22A5',
+      UpTeeArrow: '\u21A5',
+      upuparrows: '\u21C8',
+      urcorn: '\u231D',
+      urcorner: '\u231D',
+      urcrop: '\u230E',
+      Uring: '\u016E',
+      uring: '\u016F',
+      urtri: '\u25F9',
+      Uscr: '\uD835\uDCB0',
+      uscr: '\uD835\uDCCA',
+      utdot: '\u22F0',
+      Utilde: '\u0168',
+      utilde: '\u0169',
+      utri: '\u25B5',
+      utrif: '\u25B4',
+      uuarr: '\u21C8',
+      Uuml: '\u00DC',
+      uuml: '\u00FC',
+      uwangle: '\u29A7',
+      vangrt: '\u299C',
+      varepsilon: '\u03F5',
+      varkappa: '\u03F0',
+      varnothing: '\u2205',
+      varphi: '\u03D5',
+      varpi: '\u03D6',
+      varpropto: '\u221D',
+      vArr: '\u21D5',
+      varr: '\u2195',
+      varrho: '\u03F1',
+      varsigma: '\u03C2',
+      varsubsetneq: '\u228A\uFE00',
+      varsubsetneqq: '\u2ACB\uFE00',
+      varsupsetneq: '\u228B\uFE00',
+      varsupsetneqq: '\u2ACC\uFE00',
+      vartheta: '\u03D1',
+      vartriangleleft: '\u22B2',
+      vartriangleright: '\u22B3',
+      Vbar: '\u2AEB',
+      vBar: '\u2AE8',
+      vBarv: '\u2AE9',
+      Vcy: '\u0412',
+      vcy: '\u0432',
+      VDash: '\u22AB',
+      Vdash: '\u22A9',
+      vDash: '\u22A8',
+      vdash: '\u22A2',
+      Vdashl: '\u2AE6',
+      Vee: '\u22C1',
+      vee: '\u2228',
+      veebar: '\u22BB',
+      veeeq: '\u225A',
+      vellip: '\u22EE',
+      Verbar: '\u2016',
+      verbar: '\u007C',
+      Vert: '\u2016',
+      vert: '\u007C',
+      VerticalBar: '\u2223',
+      VerticalLine: '\u007C',
+      VerticalSeparator: '\u2758',
+      VerticalTilde: '\u2240',
+      VeryThinSpace: '\u200A',
+      Vfr: '\uD835\uDD19',
+      vfr: '\uD835\uDD33',
+      vltri: '\u22B2',
+      vnsub: '\u2282\u20D2',
+      vnsup: '\u2283\u20D2',
+      Vopf: '\uD835\uDD4D',
+      vopf: '\uD835\uDD67',
+      vprop: '\u221D',
+      vrtri: '\u22B3',
+      Vscr: '\uD835\uDCB1',
+      vscr: '\uD835\uDCCB',
+      vsubnE: '\u2ACB\uFE00',
+      vsubne: '\u228A\uFE00',
+      vsupnE: '\u2ACC\uFE00',
+      vsupne: '\u228B\uFE00',
+      Vvdash: '\u22AA',
+      vzigzag: '\u299A',
+      Wcirc: '\u0174',
+      wcirc: '\u0175',
+      wedbar: '\u2A5F',
+      Wedge: '\u22C0',
+      wedge: '\u2227',
+      wedgeq: '\u2259',
+      weierp: '\u2118',
+      Wfr: '\uD835\uDD1A',
+      wfr: '\uD835\uDD34',
+      Wopf: '\uD835\uDD4E',
+      wopf: '\uD835\uDD68',
+      wp: '\u2118',
+      wr: '\u2240',
+      wreath: '\u2240',
+      Wscr: '\uD835\uDCB2',
+      wscr: '\uD835\uDCCC',
+      xcap: '\u22C2',
+      xcirc: '\u25EF',
+      xcup: '\u22C3',
+      xdtri: '\u25BD',
+      Xfr: '\uD835\uDD1B',
+      xfr: '\uD835\uDD35',
+      xhArr: '\u27FA',
+      xharr: '\u27F7',
+      Xi: '\u039E',
+      xi: '\u03BE',
+      xlArr: '\u27F8',
+      xlarr: '\u27F5',
+      xmap: '\u27FC',
+      xnis: '\u22FB',
+      xodot: '\u2A00',
+      Xopf: '\uD835\uDD4F',
+      xopf: '\uD835\uDD69',
+      xoplus: '\u2A01',
+      xotime: '\u2A02',
+      xrArr: '\u27F9',
+      xrarr: '\u27F6',
+      Xscr: '\uD835\uDCB3',
+      xscr: '\uD835\uDCCD',
+      xsqcup: '\u2A06',
+      xuplus: '\u2A04',
+      xutri: '\u25B3',
+      xvee: '\u22C1',
+      xwedge: '\u22C0',
+      Yacute: '\u00DD',
+      yacute: '\u00FD',
+      YAcy: '\u042F',
+      yacy: '\u044F',
+      Ycirc: '\u0176',
+      ycirc: '\u0177',
+      Ycy: '\u042B',
+      ycy: '\u044B',
+      yen: '\u00A5',
+      Yfr: '\uD835\uDD1C',
+      yfr: '\uD835\uDD36',
+      YIcy: '\u0407',
+      yicy: '\u0457',
+      Yopf: '\uD835\uDD50',
+      yopf: '\uD835\uDD6A',
+      Yscr: '\uD835\uDCB4',
+      yscr: '\uD835\uDCCE',
+      YUcy: '\u042E',
+      yucy: '\u044E',
+      Yuml: '\u0178',
+      yuml: '\u00FF',
+      Zacute: '\u0179',
+      zacute: '\u017A',
+      Zcaron: '\u017D',
+      zcaron: '\u017E',
+      Zcy: '\u0417',
+      zcy: '\u0437',
+      Zdot: '\u017B',
+      zdot: '\u017C',
+      zeetrf: '\u2128',
+      ZeroWidthSpace: '\u200B',
+      Zeta: '\u0396',
+      zeta: '\u03B6',
+      Zfr: '\u2128',
+      zfr: '\uD835\uDD37',
+      ZHcy: '\u0416',
+      zhcy: '\u0436',
+      zigrarr: '\u21DD',
+      Zopf: '\u2124',
+      zopf: '\uD835\uDD6B',
+      Zscr: '\uD835\uDCB5',
+      zscr: '\uD835\uDCCF',
+      zwj: '\u200D',
+      zwnj: '\u200C'
+    });
+
+    /**
+     * @deprecated use `HTML_ENTITIES` instead
+     * @see HTML_ENTITIES
+     */
+    exports.entityMap = exports.HTML_ENTITIES;
+  });
+  entities.XML_ENTITIES;
+  entities.HTML_ENTITIES;
+  entities.entityMap;
+
+  var NAMESPACE$1 = conventions.NAMESPACE;
+
+  //[4]   	NameStartChar	   ::=   	":" | [A-Z] | "_" | [a-z] | [#xC0-#xD6] | [#xD8-#xF6] | [#xF8-#x2FF] | [#x370-#x37D] | [#x37F-#x1FFF] | [#x200C-#x200D] | [#x2070-#x218F] | [#x2C00-#x2FEF] | [#x3001-#xD7FF] | [#xF900-#xFDCF] | [#xFDF0-#xFFFD] | [#x10000-#xEFFFF]
+  //[4a]   	NameChar	   ::=   	NameStartChar | "-" | "." | [0-9] | #xB7 | [#x0300-#x036F] | [#x203F-#x2040]
+  //[5]   	Name	   ::=   	NameStartChar (NameChar)*
+  var nameStartChar = /[A-Z_a-z\xC0-\xD6\xD8-\xF6\u00F8-\u02FF\u0370-\u037D\u037F-\u1FFF\u200C-\u200D\u2070-\u218F\u2C00-\u2FEF\u3001-\uD7FF\uF900-\uFDCF\uFDF0-\uFFFD]/; //\u10000-\uEFFFF
+  var nameChar = new RegExp("[\\-\\.0-9" + nameStartChar.source.slice(1, -1) + "\\u00B7\\u0300-\\u036F\\u203F-\\u2040]");
+  var tagNamePattern = new RegExp('^' + nameStartChar.source + nameChar.source + '*(?:\:' + nameStartChar.source + nameChar.source + '*)?$');
+  //var tagNamePattern = /^[a-zA-Z_][\w\-\.]*(?:\:[a-zA-Z_][\w\-\.]*)?$/
+  //var handlers = 'resolveEntity,getExternalSubset,characters,endDocument,endElement,endPrefixMapping,ignorableWhitespace,processingInstruction,setDocumentLocator,skippedEntity,startDocument,startElement,startPrefixMapping,notationDecl,unparsedEntityDecl,error,fatalError,warning,attributeDecl,elementDecl,externalEntityDecl,internalEntityDecl,comment,endCDATA,endDTD,endEntity,startCDATA,startDTD,startEntity'.split(',')
+
+  //S_TAG,	S_ATTR,	S_EQ,	S_ATTR_NOQUOT_VALUE
+  //S_ATTR_SPACE,	S_ATTR_END,	S_TAG_SPACE, S_TAG_CLOSE
+  var S_TAG = 0; //tag name offerring
+  var S_ATTR = 1; //attr name offerring
+  var S_ATTR_SPACE = 2; //attr name end and space offer
+  var S_EQ = 3; //=space?
+  var S_ATTR_NOQUOT_VALUE = 4; //attr value(no quot value only)
+  var S_ATTR_END = 5; //attr value end and no space(quot end)
+  var S_TAG_SPACE = 6; //(attr value end || tag end ) && (space offer)
+  var S_TAG_CLOSE = 7; //closed el<el />
+
+  /**
+   * Creates an error that will not be caught by XMLReader aka the SAX parser.
+   *
+   * @param {string} message
+   * @param {any?} locator Optional, can provide details about the location in the source
+   * @constructor
+   */
+  function ParseError$1(message, locator) {
+    this.message = message;
+    this.locator = locator;
+    if (Error.captureStackTrace) Error.captureStackTrace(this, ParseError$1);
+  }
+  ParseError$1.prototype = new Error();
+  ParseError$1.prototype.name = ParseError$1.name;
+  function XMLReader$1() {}
+  XMLReader$1.prototype = {
+    parse: function (source, defaultNSMap, entityMap) {
+      var domBuilder = this.domBuilder;
+      domBuilder.startDocument();
+      _copy(defaultNSMap, defaultNSMap = {});
+      parse$1(source, defaultNSMap, entityMap, domBuilder, this.errorHandler);
+      domBuilder.endDocument();
+    }
+  };
+  function parse$1(source, defaultNSMapCopy, entityMap, domBuilder, errorHandler) {
+    function fixedFromCharCode(code) {
+      // String.prototype.fromCharCode does not supports
+      // > 2 bytes unicode chars directly
+      if (code > 0xffff) {
+        code -= 0x10000;
+        var surrogate1 = 0xd800 + (code >> 10),
+          surrogate2 = 0xdc00 + (code & 0x3ff);
+        return String.fromCharCode(surrogate1, surrogate2);
+      } else {
+        return String.fromCharCode(code);
+      }
+    }
+    function entityReplacer(a) {
+      var k = a.slice(1, -1);
+      if (Object.hasOwnProperty.call(entityMap, k)) {
+        return entityMap[k];
+      } else if (k.charAt(0) === '#') {
+        return fixedFromCharCode(parseInt(k.substr(1).replace('x', '0x')));
+      } else {
+        errorHandler.error('entity not found:' + a);
+        return a;
+      }
+    }
+    function appendText(end) {
+      //has some bugs
+      if (end > start) {
+        var xt = source.substring(start, end).replace(/&#?\w+;/g, entityReplacer);
+        locator && position(start);
+        domBuilder.characters(xt, 0, end - start);
+        start = end;
+      }
+    }
+    function position(p, m) {
+      while (p >= lineEnd && (m = linePattern.exec(source))) {
+        lineStart = m.index;
+        lineEnd = lineStart + m[0].length;
+        locator.lineNumber++;
+        //console.log('line++:',locator,startPos,endPos)
+      }
+
+      locator.columnNumber = p - lineStart + 1;
+    }
+    var lineStart = 0;
+    var lineEnd = 0;
+    var linePattern = /.*(?:\r\n?|\n)|.*$/g;
+    var locator = domBuilder.locator;
+    var parseStack = [{
+      currentNSMap: defaultNSMapCopy
+    }];
+    var closeMap = {};
+    var start = 0;
+    while (true) {
+      try {
+        var tagStart = source.indexOf('<', start);
+        if (tagStart < 0) {
+          if (!source.substr(start).match(/^\s*$/)) {
+            var doc = domBuilder.doc;
+            var text = doc.createTextNode(source.substr(start));
+            doc.appendChild(text);
+            domBuilder.currentElement = text;
+          }
+          return;
+        }
+        if (tagStart > start) {
+          appendText(tagStart);
+        }
+        switch (source.charAt(tagStart + 1)) {
+          case '/':
+            var end = source.indexOf('>', tagStart + 3);
+            var tagName = source.substring(tagStart + 2, end).replace(/[ \t\n\r]+$/g, '');
+            var config = parseStack.pop();
+            if (end < 0) {
+              tagName = source.substring(tagStart + 2).replace(/[\s<].*/, '');
+              errorHandler.error("end tag name: " + tagName + ' is not complete:' + config.tagName);
+              end = tagStart + 1 + tagName.length;
+            } else if (tagName.match(/\s</)) {
+              tagName = tagName.replace(/[\s<].*/, '');
+              errorHandler.error("end tag name: " + tagName + ' maybe not complete');
+              end = tagStart + 1 + tagName.length;
+            }
+            var localNSMap = config.localNSMap;
+            var endMatch = config.tagName == tagName;
+            var endIgnoreCaseMach = endMatch || config.tagName && config.tagName.toLowerCase() == tagName.toLowerCase();
+            if (endIgnoreCaseMach) {
+              domBuilder.endElement(config.uri, config.localName, tagName);
+              if (localNSMap) {
+                for (var prefix in localNSMap) {
+                  if (Object.prototype.hasOwnProperty.call(localNSMap, prefix)) {
+                    domBuilder.endPrefixMapping(prefix);
+                  }
+                }
+              }
+              if (!endMatch) {
+                errorHandler.fatalError("end tag name: " + tagName + ' is not match the current start tagName:' + config.tagName); // No known test case
+              }
+            } else {
+              parseStack.push(config);
+            }
+            end++;
+            break;
+          // end elment
+          case '?':
+            // <?...?>
+            locator && position(tagStart);
+            end = parseInstruction(source, tagStart, domBuilder);
+            break;
+          case '!':
+            // <!doctype,<![CDATA,<!--
+            locator && position(tagStart);
+            end = parseDCC(source, tagStart, domBuilder, errorHandler);
+            break;
+          default:
+            locator && position(tagStart);
+            var el = new ElementAttributes();
+            var currentNSMap = parseStack[parseStack.length - 1].currentNSMap;
+            //elStartEnd
+            var end = parseElementStartPart(source, tagStart, el, currentNSMap, entityReplacer, errorHandler);
+            var len = el.length;
+            if (!el.closed && fixSelfClosed(source, end, el.tagName, closeMap)) {
+              el.closed = true;
+              if (!entityMap.nbsp) {
+                errorHandler.warning('unclosed xml attribute');
+              }
+            }
+            if (locator && len) {
+              var locator2 = copyLocator(locator, {});
+              //try{//attribute position fixed
+              for (var i = 0; i < len; i++) {
+                var a = el[i];
+                position(a.offset);
+                a.locator = copyLocator(locator, {});
+              }
+              domBuilder.locator = locator2;
+              if (appendElement$1(el, domBuilder, currentNSMap)) {
+                parseStack.push(el);
+              }
+              domBuilder.locator = locator;
+            } else {
+              if (appendElement$1(el, domBuilder, currentNSMap)) {
+                parseStack.push(el);
+              }
+            }
+            if (NAMESPACE$1.isHTML(el.uri) && !el.closed) {
+              end = parseHtmlSpecialContent(source, end, el.tagName, entityReplacer, domBuilder);
+            } else {
+              end++;
+            }
+        }
+      } catch (e) {
+        if (e instanceof ParseError$1) {
+          throw e;
+        }
+        errorHandler.error('element parse error: ' + e);
+        end = -1;
+      }
+      if (end > start) {
+        start = end;
+      } else {
+        //TODO: 这里有可能sax回退，有位置错误风险
+        appendText(Math.max(tagStart, start) + 1);
+      }
+    }
+  }
+  function copyLocator(f, t) {
+    t.lineNumber = f.lineNumber;
+    t.columnNumber = f.columnNumber;
+    return t;
+  }
+
+  /**
+   * @see #appendElement(source,elStartEnd,el,selfClosed,entityReplacer,domBuilder,parseStack);
+   * @return end of the elementStartPart(end of elementEndPart for selfClosed el)
+   */
+  function parseElementStartPart(source, start, el, currentNSMap, entityReplacer, errorHandler) {
+    /**
+     * @param {string} qname
+     * @param {string} value
+     * @param {number} startIndex
+     */
+    function addAttribute(qname, value, startIndex) {
+      if (el.attributeNames.hasOwnProperty(qname)) {
+        errorHandler.fatalError('Attribute ' + qname + ' redefined');
+      }
+      el.addValue(qname,
+      // @see https://www.w3.org/TR/xml/#AVNormalize
+      // since the xmldom sax parser does not "interpret" DTD the following is not implemented:
+      // - recursive replacement of (DTD) entity references
+      // - trimming and collapsing multiple spaces into a single one for attributes that are not of type CDATA
+      value.replace(/[\t\n\r]/g, ' ').replace(/&#?\w+;/g, entityReplacer), startIndex);
+    }
+    var attrName;
+    var value;
+    var p = ++start;
+    var s = S_TAG; //status
+    while (true) {
+      var c = source.charAt(p);
+      switch (c) {
+        case '=':
+          if (s === S_ATTR) {
+            //attrName
+            attrName = source.slice(start, p);
+            s = S_EQ;
+          } else if (s === S_ATTR_SPACE) {
+            s = S_EQ;
+          } else {
+            //fatalError: equal must after attrName or space after attrName
+            throw new Error('attribute equal must after attrName'); // No known test case
+          }
+
+          break;
+        case '\'':
+        case '"':
+          if (s === S_EQ || s === S_ATTR //|| s == S_ATTR_SPACE
+          ) {
+            //equal
+            if (s === S_ATTR) {
+              errorHandler.warning('attribute value must after "="');
+              attrName = source.slice(start, p);
+            }
+            start = p + 1;
+            p = source.indexOf(c, start);
+            if (p > 0) {
+              value = source.slice(start, p);
+              addAttribute(attrName, value, start - 1);
+              s = S_ATTR_END;
+            } else {
+              //fatalError: no end quot match
+              throw new Error('attribute value no end \'' + c + '\' match');
+            }
+          } else if (s == S_ATTR_NOQUOT_VALUE) {
+            value = source.slice(start, p);
+            addAttribute(attrName, value, start);
+            errorHandler.warning('attribute "' + attrName + '" missed start quot(' + c + ')!!');
+            start = p + 1;
+            s = S_ATTR_END;
+          } else {
+            //fatalError: no equal before
+            throw new Error('attribute value must after "="'); // No known test case
+          }
+
+          break;
+        case '/':
+          switch (s) {
+            case S_TAG:
+              el.setTagName(source.slice(start, p));
+            case S_ATTR_END:
+            case S_TAG_SPACE:
+            case S_TAG_CLOSE:
+              s = S_TAG_CLOSE;
+              el.closed = true;
+            case S_ATTR_NOQUOT_VALUE:
+            case S_ATTR:
+              break;
+            case S_ATTR_SPACE:
+              el.closed = true;
+              break;
+            //case S_EQ:
+            default:
+              throw new Error("attribute invalid close char('/')");
+            // No known test case
+          }
+
+          break;
+        case '':
+          //end document
+          errorHandler.error('unexpected end of input');
+          if (s == S_TAG) {
+            el.setTagName(source.slice(start, p));
+          }
+          return p;
+        case '>':
+          switch (s) {
+            case S_TAG:
+              el.setTagName(source.slice(start, p));
+            case S_ATTR_END:
+            case S_TAG_SPACE:
+            case S_TAG_CLOSE:
+              break;
+            //normal
+            case S_ATTR_NOQUOT_VALUE: //Compatible state
+            case S_ATTR:
+              value = source.slice(start, p);
+              if (value.slice(-1) === '/') {
+                el.closed = true;
+                value = value.slice(0, -1);
+              }
+            case S_ATTR_SPACE:
+              if (s === S_ATTR_SPACE) {
+                value = attrName;
+              }
+              if (s == S_ATTR_NOQUOT_VALUE) {
+                errorHandler.warning('attribute "' + value + '" missed quot(")!');
+                addAttribute(attrName, value, start);
+              } else {
+                if (!NAMESPACE$1.isHTML(currentNSMap['']) || !value.match(/^(?:disabled|checked|selected)$/i)) {
+                  errorHandler.warning('attribute "' + value + '" missed value!! "' + value + '" instead!!');
+                }
+                addAttribute(value, value, start);
+              }
+              break;
+            case S_EQ:
+              throw new Error('attribute value missed!!');
+          }
+          //			console.log(tagName,tagNamePattern,tagNamePattern.test(tagName))
+          return p;
+        /*xml space '\x20' | #x9 | #xD | #xA; */
+        case '\u0080':
+          c = ' ';
+        default:
+          if (c <= ' ') {
+            //space
+            switch (s) {
+              case S_TAG:
+                el.setTagName(source.slice(start, p)); //tagName
+                s = S_TAG_SPACE;
+                break;
+              case S_ATTR:
+                attrName = source.slice(start, p);
+                s = S_ATTR_SPACE;
+                break;
+              case S_ATTR_NOQUOT_VALUE:
+                var value = source.slice(start, p);
+                errorHandler.warning('attribute "' + value + '" missed quot(")!!');
+                addAttribute(attrName, value, start);
+              case S_ATTR_END:
+                s = S_TAG_SPACE;
+                break;
+              //case S_TAG_SPACE:
+              //case S_EQ:
+              //case S_ATTR_SPACE:
+              //	void();break;
+              //case S_TAG_CLOSE:
+              //ignore warning
+            }
+          } else {
+            //not space
+            //S_TAG,	S_ATTR,	S_EQ,	S_ATTR_NOQUOT_VALUE
+            //S_ATTR_SPACE,	S_ATTR_END,	S_TAG_SPACE, S_TAG_CLOSE
+            switch (s) {
+              //case S_TAG:void();break;
+              //case S_ATTR:void();break;
+              //case S_ATTR_NOQUOT_VALUE:void();break;
+              case S_ATTR_SPACE:
+                el.tagName;
+                if (!NAMESPACE$1.isHTML(currentNSMap['']) || !attrName.match(/^(?:disabled|checked|selected)$/i)) {
+                  errorHandler.warning('attribute "' + attrName + '" missed value!! "' + attrName + '" instead2!!');
+                }
+                addAttribute(attrName, attrName, start);
+                start = p;
+                s = S_ATTR;
+                break;
+              case S_ATTR_END:
+                errorHandler.warning('attribute space is required"' + attrName + '"!!');
+              case S_TAG_SPACE:
+                s = S_ATTR;
+                start = p;
+                break;
+              case S_EQ:
+                s = S_ATTR_NOQUOT_VALUE;
+                start = p;
+                break;
+              case S_TAG_CLOSE:
+                throw new Error("elements closed character '/' and '>' must be connected to");
+            }
+          }
+      } //end outer switch
+      //console.log('p++',p)
+      p++;
+    }
+  }
+  /**
+   * @return true if has new namespace define
+   */
+  function appendElement$1(el, domBuilder, currentNSMap) {
+    var tagName = el.tagName;
+    var localNSMap = null;
+    //var currentNSMap = parseStack[parseStack.length-1].currentNSMap;
+    var i = el.length;
+    while (i--) {
+      var a = el[i];
+      var qName = a.qName;
+      var value = a.value;
+      var nsp = qName.indexOf(':');
+      if (nsp > 0) {
+        var prefix = a.prefix = qName.slice(0, nsp);
+        var localName = qName.slice(nsp + 1);
+        var nsPrefix = prefix === 'xmlns' && localName;
+      } else {
+        localName = qName;
+        prefix = null;
+        nsPrefix = qName === 'xmlns' && '';
+      }
+      //can not set prefix,because prefix !== ''
+      a.localName = localName;
+      //prefix == null for no ns prefix attribute
+      if (nsPrefix !== false) {
+        //hack!!
+        if (localNSMap == null) {
+          localNSMap = {};
+          //console.log(currentNSMap,0)
+          _copy(currentNSMap, currentNSMap = {});
+          //console.log(currentNSMap,1)
+        }
+
+        currentNSMap[nsPrefix] = localNSMap[nsPrefix] = value;
+        a.uri = NAMESPACE$1.XMLNS;
+        domBuilder.startPrefixMapping(nsPrefix, value);
+      }
+    }
+    var i = el.length;
+    while (i--) {
+      a = el[i];
+      var prefix = a.prefix;
+      if (prefix) {
+        //no prefix attribute has no namespace
+        if (prefix === 'xml') {
+          a.uri = NAMESPACE$1.XML;
+        }
+        if (prefix !== 'xmlns') {
+          a.uri = currentNSMap[prefix || ''];
+
+          //{console.log('###'+a.qName,domBuilder.locator.systemId+'',currentNSMap,a.uri)}
+        }
+      }
+    }
+
+    var nsp = tagName.indexOf(':');
+    if (nsp > 0) {
+      prefix = el.prefix = tagName.slice(0, nsp);
+      localName = el.localName = tagName.slice(nsp + 1);
+    } else {
+      prefix = null; //important!!
+      localName = el.localName = tagName;
+    }
+    //no prefix element has default namespace
+    var ns = el.uri = currentNSMap[prefix || ''];
+    domBuilder.startElement(ns, localName, tagName, el);
+    //endPrefixMapping and startPrefixMapping have not any help for dom builder
+    //localNSMap = null
+    if (el.closed) {
+      domBuilder.endElement(ns, localName, tagName);
+      if (localNSMap) {
+        for (prefix in localNSMap) {
+          if (Object.prototype.hasOwnProperty.call(localNSMap, prefix)) {
+            domBuilder.endPrefixMapping(prefix);
+          }
+        }
+      }
+    } else {
+      el.currentNSMap = currentNSMap;
+      el.localNSMap = localNSMap;
+      //parseStack.push(el);
+      return true;
+    }
+  }
+  function parseHtmlSpecialContent(source, elStartEnd, tagName, entityReplacer, domBuilder) {
+    if (/^(?:script|textarea)$/i.test(tagName)) {
+      var elEndStart = source.indexOf('</' + tagName + '>', elStartEnd);
+      var text = source.substring(elStartEnd + 1, elEndStart);
+      if (/[&<]/.test(text)) {
+        if (/^script$/i.test(tagName)) {
+          //if(!/\]\]>/.test(text)){
+          //lexHandler.startCDATA();
+          domBuilder.characters(text, 0, text.length);
+          //lexHandler.endCDATA();
+          return elEndStart;
+          //}
+        } //}else{//text area
+        text = text.replace(/&#?\w+;/g, entityReplacer);
+        domBuilder.characters(text, 0, text.length);
+        return elEndStart;
+        //}
+      }
+    }
+
+    return elStartEnd + 1;
+  }
+  function fixSelfClosed(source, elStartEnd, tagName, closeMap) {
+    //if(tagName in closeMap){
+    var pos = closeMap[tagName];
+    if (pos == null) {
+      //console.log(tagName)
+      pos = source.lastIndexOf('</' + tagName + '>');
+      if (pos < elStartEnd) {
+        //忘记闭合
+        pos = source.lastIndexOf('</' + tagName);
+      }
+      closeMap[tagName] = pos;
+    }
+    return pos < elStartEnd;
+    //}
+  }
+
+  function _copy(source, target) {
+    for (var n in source) {
+      if (Object.prototype.hasOwnProperty.call(source, n)) {
+        target[n] = source[n];
+      }
+    }
+  }
+  function parseDCC(source, start, domBuilder, errorHandler) {
+    //sure start with '<!'
+    var next = source.charAt(start + 2);
+    switch (next) {
+      case '-':
+        if (source.charAt(start + 3) === '-') {
+          var end = source.indexOf('-->', start + 4);
+          //append comment source.substring(4,end)//<!--
+          if (end > start) {
+            domBuilder.comment(source, start + 4, end - start - 4);
+            return end + 3;
+          } else {
+            errorHandler.error("Unclosed comment");
+            return -1;
+          }
+        } else {
+          //error
+          return -1;
+        }
+      default:
+        if (source.substr(start + 3, 6) == 'CDATA[') {
+          var end = source.indexOf(']]>', start + 9);
+          domBuilder.startCDATA();
+          domBuilder.characters(source, start + 9, end - start - 9);
+          domBuilder.endCDATA();
+          return end + 3;
+        }
+        //<!DOCTYPE
+        //startDTD(java.lang.String name, java.lang.String publicId, java.lang.String systemId)
+        var matchs = split(source, start);
+        var len = matchs.length;
+        if (len > 1 && /!doctype/i.test(matchs[0][0])) {
+          var name = matchs[1][0];
+          var pubid = false;
+          var sysid = false;
+          if (len > 3) {
+            if (/^public$/i.test(matchs[2][0])) {
+              pubid = matchs[3][0];
+              sysid = len > 4 && matchs[4][0];
+            } else if (/^system$/i.test(matchs[2][0])) {
+              sysid = matchs[3][0];
+            }
+          }
+          var lastMatch = matchs[len - 1];
+          domBuilder.startDTD(name, pubid, sysid);
+          domBuilder.endDTD();
+          return lastMatch.index + lastMatch[0].length;
+        }
+    }
+    return -1;
+  }
+  function parseInstruction(source, start, domBuilder) {
+    var end = source.indexOf('?>', start);
+    if (end) {
+      var match = source.substring(start, end).match(/^<\?(\S*)\s*([\s\S]*?)\s*$/);
+      if (match) {
+        match[0].length;
+        domBuilder.processingInstruction(match[1], match[2]);
+        return end + 2;
+      } else {
+        //error
+        return -1;
+      }
+    }
+    return -1;
+  }
+  function ElementAttributes() {
+    this.attributeNames = {};
+  }
+  ElementAttributes.prototype = {
+    setTagName: function (tagName) {
+      if (!tagNamePattern.test(tagName)) {
+        throw new Error('invalid tagName:' + tagName);
+      }
+      this.tagName = tagName;
+    },
+    addValue: function (qName, value, offset) {
+      if (!tagNamePattern.test(qName)) {
+        throw new Error('invalid attribute:' + qName);
+      }
+      this.attributeNames[qName] = this.length;
+      this[this.length++] = {
+        qName: qName,
+        value: value,
+        offset: offset
+      };
+    },
+    length: 0,
+    getLocalName: function (i) {
+      return this[i].localName;
+    },
+    getLocator: function (i) {
+      return this[i].locator;
+    },
+    getQName: function (i) {
+      return this[i].qName;
+    },
+    getURI: function (i) {
+      return this[i].uri;
+    },
+    getValue: function (i) {
+      return this[i].value;
+    }
+    //	,getIndex:function(uri, localName)){
+    //		if(localName){
+    //
+    //		}else{
+    //			var qName = uri
+    //		}
+    //	},
+    //	getValue:function(){return this.getValue(this.getIndex.apply(this,arguments))},
+    //	getType:function(uri,localName){}
+    //	getType:function(i){},
+  };
+
+  function split(source, start) {
+    var match;
+    var buf = [];
+    var reg = /'[^']+'|"[^"]+"|[^\s<>\/=]+=?|(\/?\s*>|<)/g;
+    reg.lastIndex = start;
+    reg.exec(source); //skip <
+    while (match = reg.exec(source)) {
+      buf.push(match);
+      if (match[1]) return buf;
+    }
+  }
+  var XMLReader_1 = XMLReader$1;
+  var ParseError_1 = ParseError$1;
+  var sax = {
+    XMLReader: XMLReader_1,
+    ParseError: ParseError_1
+  };
+
+  var DOMImplementation = dom.DOMImplementation;
+  var NAMESPACE = conventions.NAMESPACE;
+  var ParseError = sax.ParseError;
+  var XMLReader = sax.XMLReader;
+
+  /**
+   * Normalizes line ending according to https://www.w3.org/TR/xml11/#sec-line-ends:
+   *
+   * > XML parsed entities are often stored in computer files which,
+   * > for editing convenience, are organized into lines.
+   * > These lines are typically separated by some combination
+   * > of the characters CARRIAGE RETURN (#xD) and LINE FEED (#xA).
+   * >
+   * > To simplify the tasks of applications, the XML processor must behave
+   * > as if it normalized all line breaks in external parsed entities (including the document entity)
+   * > on input, before parsing, by translating all of the following to a single #xA character:
+   * >
+   * > 1. the two-character sequence #xD #xA
+   * > 2. the two-character sequence #xD #x85
+   * > 3. the single character #x85
+   * > 4. the single character #x2028
+   * > 5. any #xD character that is not immediately followed by #xA or #x85.
+   *
+   * @param {string} input
+   * @returns {string}
+   */
+  function normalizeLineEndings(input) {
+    return input.replace(/\r[\n\u0085]/g, '\n').replace(/[\r\u0085\u2028]/g, '\n');
+  }
+
+  /**
+   * @typedef Locator
+   * @property {number} [columnNumber]
+   * @property {number} [lineNumber]
+   */
+
+  /**
+   * @typedef DOMParserOptions
+   * @property {DOMHandler} [domBuilder]
+   * @property {Function} [errorHandler]
+   * @property {(string) => string} [normalizeLineEndings] used to replace line endings before parsing
+   * 						defaults to `normalizeLineEndings`
+   * @property {Locator} [locator]
+   * @property {Record<string, string>} [xmlns]
+   *
+   * @see normalizeLineEndings
+   */
+
+  /**
+   * The DOMParser interface provides the ability to parse XML or HTML source code
+   * from a string into a DOM `Document`.
+   *
+   * _xmldom is different from the spec in that it allows an `options` parameter,
+   * to override the default behavior._
+   *
+   * @param {DOMParserOptions} [options]
+   * @constructor
+   *
+   * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMParser
+   * @see https://html.spec.whatwg.org/multipage/dynamic-markup-insertion.html#dom-parsing-and-serialization
+   */
+  function DOMParser$1(options) {
+    this.options = options || {
+      locator: {}
+    };
+  }
+  DOMParser$1.prototype.parseFromString = function (source, mimeType) {
+    var options = this.options;
+    var sax = new XMLReader();
+    var domBuilder = options.domBuilder || new DOMHandler(); //contentHandler and LexicalHandler
+    var errorHandler = options.errorHandler;
+    var locator = options.locator;
+    var defaultNSMap = options.xmlns || {};
+    var isHTML = /\/x?html?$/.test(mimeType); //mimeType.toLowerCase().indexOf('html') > -1;
+    var entityMap = isHTML ? entities.HTML_ENTITIES : entities.XML_ENTITIES;
+    if (locator) {
+      domBuilder.setDocumentLocator(locator);
+    }
+    sax.errorHandler = buildErrorHandler(errorHandler, domBuilder, locator);
+    sax.domBuilder = options.domBuilder || domBuilder;
+    if (isHTML) {
+      defaultNSMap[''] = NAMESPACE.HTML;
+    }
+    defaultNSMap.xml = defaultNSMap.xml || NAMESPACE.XML;
+    var normalize = options.normalizeLineEndings || normalizeLineEndings;
+    if (source && typeof source === 'string') {
+      sax.parse(normalize(source), defaultNSMap, entityMap);
+    } else {
+      sax.errorHandler.error('invalid doc source');
+    }
+    return domBuilder.doc;
+  };
+  function buildErrorHandler(errorImpl, domBuilder, locator) {
+    if (!errorImpl) {
+      if (domBuilder instanceof DOMHandler) {
+        return domBuilder;
+      }
+      errorImpl = domBuilder;
+    }
+    var errorHandler = {};
+    var isCallback = errorImpl instanceof Function;
+    locator = locator || {};
+    function build(key) {
+      var fn = errorImpl[key];
+      if (!fn && isCallback) {
+        fn = errorImpl.length == 2 ? function (msg) {
+          errorImpl(key, msg);
+        } : errorImpl;
+      }
+      errorHandler[key] = fn && function (msg) {
+        fn('[xmldom ' + key + ']\t' + msg + _locator(locator));
+      } || function () {};
+    }
+    build('warning');
+    build('error');
+    build('fatalError');
+    return errorHandler;
+  }
+
+  //console.log('#\n\n\n\n\n\n\n####')
+  /**
+   * +ContentHandler+ErrorHandler
+   * +LexicalHandler+EntityResolver2
+   * -DeclHandler-DTDHandler
+   *
+   * DefaultHandler:EntityResolver, DTDHandler, ContentHandler, ErrorHandler
+   * DefaultHandler2:DefaultHandler,LexicalHandler, DeclHandler, EntityResolver2
+   * @link http://www.saxproject.org/apidoc/org/xml/sax/helpers/DefaultHandler.html
+   */
+  function DOMHandler() {
+    this.cdata = false;
+  }
+  function position(locator, node) {
+    node.lineNumber = locator.lineNumber;
+    node.columnNumber = locator.columnNumber;
+  }
+  /**
+   * @see org.xml.sax.ContentHandler#startDocument
+   * @link http://www.saxproject.org/apidoc/org/xml/sax/ContentHandler.html
+   */
+  DOMHandler.prototype = {
+    startDocument: function () {
+      this.doc = new DOMImplementation().createDocument(null, null, null);
+      if (this.locator) {
+        this.doc.documentURI = this.locator.systemId;
+      }
+    },
+    startElement: function (namespaceURI, localName, qName, attrs) {
+      var doc = this.doc;
+      var el = doc.createElementNS(namespaceURI, qName || localName);
+      var len = attrs.length;
+      appendElement(this, el);
+      this.currentElement = el;
+      this.locator && position(this.locator, el);
+      for (var i = 0; i < len; i++) {
+        var namespaceURI = attrs.getURI(i);
+        var value = attrs.getValue(i);
+        var qName = attrs.getQName(i);
+        var attr = doc.createAttributeNS(namespaceURI, qName);
+        this.locator && position(attrs.getLocator(i), attr);
+        attr.value = attr.nodeValue = value;
+        el.setAttributeNode(attr);
+      }
+    },
+    endElement: function (namespaceURI, localName, qName) {
+      var current = this.currentElement;
+      current.tagName;
+      this.currentElement = current.parentNode;
+    },
+    startPrefixMapping: function (prefix, uri) {},
+    endPrefixMapping: function (prefix) {},
+    processingInstruction: function (target, data) {
+      var ins = this.doc.createProcessingInstruction(target, data);
+      this.locator && position(this.locator, ins);
+      appendElement(this, ins);
+    },
+    ignorableWhitespace: function (ch, start, length) {},
+    characters: function (chars, start, length) {
+      chars = _toString.apply(this, arguments);
+      //console.log(chars)
+      if (chars) {
+        if (this.cdata) {
+          var charNode = this.doc.createCDATASection(chars);
+        } else {
+          var charNode = this.doc.createTextNode(chars);
+        }
+        if (this.currentElement) {
+          this.currentElement.appendChild(charNode);
+        } else if (/^\s*$/.test(chars)) {
+          this.doc.appendChild(charNode);
+          //process xml
+        }
+
+        this.locator && position(this.locator, charNode);
+      }
+    },
+    skippedEntity: function (name) {},
+    endDocument: function () {
+      this.doc.normalize();
+    },
+    setDocumentLocator: function (locator) {
+      if (this.locator = locator) {
+        // && !('lineNumber' in locator)){
+        locator.lineNumber = 0;
+      }
+    },
+    //LexicalHandler
+    comment: function (chars, start, length) {
+      chars = _toString.apply(this, arguments);
+      var comm = this.doc.createComment(chars);
+      this.locator && position(this.locator, comm);
+      appendElement(this, comm);
+    },
+    startCDATA: function () {
+      //used in characters() methods
+      this.cdata = true;
+    },
+    endCDATA: function () {
+      this.cdata = false;
+    },
+    startDTD: function (name, publicId, systemId) {
+      var impl = this.doc.implementation;
+      if (impl && impl.createDocumentType) {
+        var dt = impl.createDocumentType(name, publicId, systemId);
+        this.locator && position(this.locator, dt);
+        appendElement(this, dt);
+        this.doc.doctype = dt;
+      }
+    },
+    /**
+     * @see org.xml.sax.ErrorHandler
+     * @link http://www.saxproject.org/apidoc/org/xml/sax/ErrorHandler.html
+     */
+    warning: function (error) {
+      console.warn('[xmldom warning]\t' + error, _locator(this.locator));
+    },
+    error: function (error) {
+      console.error('[xmldom error]\t' + error, _locator(this.locator));
+    },
+    fatalError: function (error) {
+      throw new ParseError(error, this.locator);
+    }
+  };
+  function _locator(l) {
+    if (l) {
+      return '\n@' + (l.systemId || '') + '#[line:' + l.lineNumber + ',col:' + l.columnNumber + ']';
+    }
+  }
+  function _toString(chars, start, length) {
+    if (typeof chars == 'string') {
+      return chars.substr(start, length);
+    } else {
+      //java sax connect width xmldom on rhino(what about: "? && !(chars instanceof String)")
+      if (chars.length >= start + length || start) {
+        return new java.lang.String(chars, start, length) + '';
+      }
+      return chars;
+    }
+  }
+
+  /*
+   * @link http://www.saxproject.org/apidoc/org/xml/sax/ext/LexicalHandler.html
+   * used method of org.xml.sax.ext.LexicalHandler:
+   *  #comment(chars, start, length)
+   *  #startCDATA()
+   *  #endCDATA()
+   *  #startDTD(name, publicId, systemId)
+   *
+   *
+   * IGNORED method of org.xml.sax.ext.LexicalHandler:
+   *  #endDTD()
+   *  #startEntity(name)
+   *  #endEntity(name)
+   *
+   *
+   * @link http://www.saxproject.org/apidoc/org/xml/sax/ext/DeclHandler.html
+   * IGNORED method of org.xml.sax.ext.DeclHandler
+   * 	#attributeDecl(eName, aName, type, mode, value)
+   *  #elementDecl(name, model)
+   *  #externalEntityDecl(name, publicId, systemId)
+   *  #internalEntityDecl(name, value)
+   * @link http://www.saxproject.org/apidoc/org/xml/sax/ext/EntityResolver2.html
+   * IGNORED method of org.xml.sax.EntityResolver2
+   *  #resolveEntity(String name,String publicId,String baseURI,String systemId)
+   *  #resolveEntity(publicId, systemId)
+   *  #getExternalSubset(name, baseURI)
+   * @link http://www.saxproject.org/apidoc/org/xml/sax/DTDHandler.html
+   * IGNORED method of org.xml.sax.DTDHandler
+   *  #notationDecl(name, publicId, systemId) {};
+   *  #unparsedEntityDecl(name, publicId, systemId, notationName) {};
+   */
+  "endDTD,startEntity,endEntity,attributeDecl,elementDecl,externalEntityDecl,internalEntityDecl,resolveEntity,getExternalSubset,notationDecl,unparsedEntityDecl".replace(/\w+/g, function (key) {
+    DOMHandler.prototype[key] = function () {
+      return null;
+    };
+  });
+
+  /* Private static helpers treated below as private instance methods, so don't need to add these to the public API; we might use a Relator to also get rid of non-standard public properties */
+  function appendElement(hander, node) {
+    if (!hander.currentElement) {
+      hander.doc.appendChild(node);
+    } else {
+      hander.currentElement.appendChild(node);
+    }
+  } //appendChild and setAttributeNS are preformance key
+
+  var __DOMHandler = DOMHandler;
+  var normalizeLineEndings_1 = normalizeLineEndings;
+  var DOMParser_1 = DOMParser$1;
+  var domParser = {
+    __DOMHandler: __DOMHandler,
+    normalizeLineEndings: normalizeLineEndings_1,
+    DOMParser: DOMParser_1
+  };
+
+  var DOMParser = domParser.DOMParser;
+
+  /*! @name mpd-parser @version 1.3.0 @license Apache-2.0 */
+  const isObject = obj => {
+    return !!obj && typeof obj === 'object';
+  };
+  const merge$1 = (...objects) => {
+    return objects.reduce((result, source) => {
+      if (typeof source !== 'object') {
+        return result;
+      }
+      Object.keys(source).forEach(key => {
+        if (Array.isArray(result[key]) && Array.isArray(source[key])) {
+          result[key] = result[key].concat(source[key]);
+        } else if (isObject(result[key]) && isObject(source[key])) {
+          result[key] = merge$1(result[key], source[key]);
+        } else {
+          result[key] = source[key];
+        }
+      });
+      return result;
+    }, {});
+  };
+  const values = o => Object.keys(o).map(k => o[k]);
+  const range = (start, end) => {
+    const result = [];
+    for (let i = start; i < end; i++) {
+      result.push(i);
+    }
+    return result;
+  };
+  const flatten = lists => lists.reduce((x, y) => x.concat(y), []);
+  const from = list => {
+    if (!list.length) {
+      return [];
+    }
+    const result = [];
+    for (let i = 0; i < list.length; i++) {
+      result.push(list[i]);
+    }
+    return result;
+  };
+  const findIndexes = (l, key) => l.reduce((a, e, i) => {
+    if (e[key]) {
+      a.push(i);
+    }
+    return a;
+  }, []);
+  /**
+   * Returns a union of the included lists provided each element can be identified by a key.
+   *
+   * @param {Array} list - list of lists to get the union of
+   * @param {Function} keyFunction - the function to use as a key for each element
+   *
+   * @return {Array} the union of the arrays
+   */
+
+  const union = (lists, keyFunction) => {
+    return values(lists.reduce((acc, list) => {
+      list.forEach(el => {
+        acc[keyFunction(el)] = el;
+      });
+      return acc;
+    }, {}));
+  };
+  var errors = {
+    INVALID_NUMBER_OF_PERIOD: 'INVALID_NUMBER_OF_PERIOD',
+    INVALID_NUMBER_OF_CONTENT_STEERING: 'INVALID_NUMBER_OF_CONTENT_STEERING',
+    DASH_EMPTY_MANIFEST: 'DASH_EMPTY_MANIFEST',
+    DASH_INVALID_XML: 'DASH_INVALID_XML',
+    NO_BASE_URL: 'NO_BASE_URL',
+    MISSING_SEGMENT_INFORMATION: 'MISSING_SEGMENT_INFORMATION',
+    SEGMENT_TIME_UNSPECIFIED: 'SEGMENT_TIME_UNSPECIFIED',
+    UNSUPPORTED_UTC_TIMING_SCHEME: 'UNSUPPORTED_UTC_TIMING_SCHEME'
+  };
+
+  /**
+   * @typedef {Object} SingleUri
+   * @property {string} uri - relative location of segment
+   * @property {string} resolvedUri - resolved location of segment
+   * @property {Object} byterange - Object containing information on how to make byte range
+   *   requests following byte-range-spec per RFC2616.
+   * @property {String} byterange.length - length of range request
+   * @property {String} byterange.offset - byte offset of range request
+   *
+   * @see https://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.35.1
+   */
+
+  /**
+   * Converts a URLType node (5.3.9.2.3 Table 13) to a segment object
+   * that conforms to how m3u8-parser is structured
+   *
+   * @see https://github.com/videojs/m3u8-parser
+   *
+   * @param {string} baseUrl - baseUrl provided by <BaseUrl> nodes
+   * @param {string} source - source url for segment
+   * @param {string} range - optional range used for range calls,
+   *   follows  RFC 2616, Clause 14.35.1
+   * @return {SingleUri} full segment information transformed into a format similar
+   *   to m3u8-parser
+   */
+
+  const urlTypeToSegment = ({
+    baseUrl = '',
+    source = '',
+    range = '',
+    indexRange = ''
+  }) => {
+    const segment = {
+      uri: source,
+      resolvedUri: resolveUrl$1(baseUrl || '', source)
+    };
+    if (range || indexRange) {
+      const rangeStr = range ? range : indexRange;
+      const ranges = rangeStr.split('-'); // default to parsing this as a BigInt if possible
+
+      let startRange = window.BigInt ? window.BigInt(ranges[0]) : parseInt(ranges[0], 10);
+      let endRange = window.BigInt ? window.BigInt(ranges[1]) : parseInt(ranges[1], 10); // convert back to a number if less than MAX_SAFE_INTEGER
+
+      if (startRange < Number.MAX_SAFE_INTEGER && typeof startRange === 'bigint') {
+        startRange = Number(startRange);
+      }
+      if (endRange < Number.MAX_SAFE_INTEGER && typeof endRange === 'bigint') {
+        endRange = Number(endRange);
+      }
+      let length;
+      if (typeof endRange === 'bigint' || typeof startRange === 'bigint') {
+        length = window.BigInt(endRange) - window.BigInt(startRange) + window.BigInt(1);
+      } else {
+        length = endRange - startRange + 1;
+      }
+      if (typeof length === 'bigint' && length < Number.MAX_SAFE_INTEGER) {
+        length = Number(length);
+      } // byterange should be inclusive according to
+      // RFC 2616, Clause 14.35.1
+
+      segment.byterange = {
+        length,
+        offset: startRange
+      };
+    }
+    return segment;
+  };
+  const byteRangeToString = byterange => {
+    // `endRange` is one less than `offset + length` because the HTTP range
+    // header uses inclusive ranges
+    let endRange;
+    if (typeof byterange.offset === 'bigint' || typeof byterange.length === 'bigint') {
+      endRange = window.BigInt(byterange.offset) + window.BigInt(byterange.length) - window.BigInt(1);
+    } else {
+      endRange = byterange.offset + byterange.length - 1;
+    }
+    return `${byterange.offset}-${endRange}`;
+  };
+
+  /**
+   * parse the end number attribue that can be a string
+   * number, or undefined.
+   *
+   * @param {string|number|undefined} endNumber
+   *        The end number attribute.
+   *
+   * @return {number|null}
+   *          The result of parsing the end number.
+   */
+
+  const parseEndNumber = endNumber => {
+    if (endNumber && typeof endNumber !== 'number') {
+      endNumber = parseInt(endNumber, 10);
+    }
+    if (isNaN(endNumber)) {
+      return null;
+    }
+    return endNumber;
+  };
+  /**
+   * Functions for calculating the range of available segments in static and dynamic
+   * manifests.
+   */
+
+  const segmentRange = {
+    /**
+     * Returns the entire range of available segments for a static MPD
+     *
+     * @param {Object} attributes
+     *        Inheritied MPD attributes
+     * @return {{ start: number, end: number }}
+     *         The start and end numbers for available segments
+     */
+    static(attributes) {
+      const {
+        duration,
+        timescale = 1,
+        sourceDuration,
+        periodDuration
+      } = attributes;
+      const endNumber = parseEndNumber(attributes.endNumber);
+      const segmentDuration = duration / timescale;
+      if (typeof endNumber === 'number') {
+        return {
+          start: 0,
+          end: endNumber
+        };
+      }
+      if (typeof periodDuration === 'number') {
+        return {
+          start: 0,
+          end: periodDuration / segmentDuration
+        };
+      }
+      return {
+        start: 0,
+        end: sourceDuration / segmentDuration
+      };
+    },
+    /**
+     * Returns the current live window range of available segments for a dynamic MPD
+     *
+     * @param {Object} attributes
+     *        Inheritied MPD attributes
+     * @return {{ start: number, end: number }}
+     *         The start and end numbers for available segments
+     */
+    dynamic(attributes) {
+      const {
+        NOW,
+        clientOffset,
+        availabilityStartTime,
+        timescale = 1,
+        duration,
+        periodStart = 0,
+        minimumUpdatePeriod = 0,
+        timeShiftBufferDepth = Infinity
+      } = attributes;
+      const endNumber = parseEndNumber(attributes.endNumber); // clientOffset is passed in at the top level of mpd-parser and is an offset calculated
+      // after retrieving UTC server time.
+
+      const now = (NOW + clientOffset) / 1000; // WC stands for Wall Clock.
+      // Convert the period start time to EPOCH.
+
+      const periodStartWC = availabilityStartTime + periodStart; // Period end in EPOCH is manifest's retrieval time + time until next update.
+
+      const periodEndWC = now + minimumUpdatePeriod;
+      const periodDuration = periodEndWC - periodStartWC;
+      const segmentCount = Math.ceil(periodDuration * timescale / duration);
+      const availableStart = Math.floor((now - periodStartWC - timeShiftBufferDepth) * timescale / duration);
+      const availableEnd = Math.floor((now - periodStartWC) * timescale / duration);
+      return {
+        start: Math.max(0, availableStart),
+        end: typeof endNumber === 'number' ? endNumber : Math.min(segmentCount, availableEnd)
+      };
+    }
+  };
+  /**
+   * Maps a range of numbers to objects with information needed to build the corresponding
+   * segment list
+   *
+   * @name toSegmentsCallback
+   * @function
+   * @param {number} number
+   *        Number of the segment
+   * @param {number} index
+   *        Index of the number in the range list
+   * @return {{ number: Number, duration: Number, timeline: Number, time: Number }}
+   *         Object with segment timing and duration info
+   */
+
+  /**
+   * Returns a callback for Array.prototype.map for mapping a range of numbers to
+   * information needed to build the segment list.
+   *
+   * @param {Object} attributes
+   *        Inherited MPD attributes
+   * @return {toSegmentsCallback}
+   *         Callback map function
+   */
+
+  const toSegments = attributes => number => {
+    const {
+      duration,
+      timescale = 1,
+      periodStart,
+      startNumber = 1
+    } = attributes;
+    return {
+      number: startNumber + number,
+      duration: duration / timescale,
+      timeline: periodStart,
+      time: number * duration
+    };
+  };
+  /**
+   * Returns a list of objects containing segment timing and duration info used for
+   * building the list of segments. This uses the @duration attribute specified
+   * in the MPD manifest to derive the range of segments.
+   *
+   * @param {Object} attributes
+   *        Inherited MPD attributes
+   * @return {{number: number, duration: number, time: number, timeline: number}[]}
+   *         List of Objects with segment timing and duration info
+   */
+
+  const parseByDuration = attributes => {
+    const {
+      type,
+      duration,
+      timescale = 1,
+      periodDuration,
+      sourceDuration
+    } = attributes;
+    const {
+      start,
+      end
+    } = segmentRange[type](attributes);
+    const segments = range(start, end).map(toSegments(attributes));
+    if (type === 'static') {
+      const index = segments.length - 1; // section is either a period or the full source
+
+      const sectionDuration = typeof periodDuration === 'number' ? periodDuration : sourceDuration; // final segment may be less than full segment duration
+
+      segments[index].duration = sectionDuration - duration / timescale * index;
+    }
+    return segments;
+  };
+
+  /**
+   * Translates SegmentBase into a set of segments.
+   * (DASH SPEC Section 5.3.9.3.2) contains a set of <SegmentURL> nodes.  Each
+   * node should be translated into segment.
+   *
+   * @param {Object} attributes
+   *   Object containing all inherited attributes from parent elements with attribute
+   *   names as keys
+   * @return {Object.<Array>} list of segments
+   */
+
+  const segmentsFromBase = attributes => {
+    const {
+      baseUrl,
+      initialization = {},
+      sourceDuration,
+      indexRange = '',
+      periodStart,
+      presentationTime,
+      number = 0,
+      duration
+    } = attributes; // base url is required for SegmentBase to work, per spec (Section 5.3.9.2.1)
+
+    if (!baseUrl) {
+      throw new Error(errors.NO_BASE_URL);
+    }
+    const initSegment = urlTypeToSegment({
+      baseUrl,
+      source: initialization.sourceURL,
+      range: initialization.range
+    });
+    const segment = urlTypeToSegment({
+      baseUrl,
+      source: baseUrl,
+      indexRange
+    });
+    segment.map = initSegment; // If there is a duration, use it, otherwise use the given duration of the source
+    // (since SegmentBase is only for one total segment)
+
+    if (duration) {
+      const segmentTimeInfo = parseByDuration(attributes);
+      if (segmentTimeInfo.length) {
+        segment.duration = segmentTimeInfo[0].duration;
+        segment.timeline = segmentTimeInfo[0].timeline;
+      }
+    } else if (sourceDuration) {
+      segment.duration = sourceDuration;
+      segment.timeline = periodStart;
+    } // If presentation time is provided, these segments are being generated by SIDX
+    // references, and should use the time provided. For the general case of SegmentBase,
+    // there should only be one segment in the period, so its presentation time is the same
+    // as its period start.
+
+    segment.presentationTime = presentationTime || periodStart;
+    segment.number = number;
+    return [segment];
+  };
+  /**
+   * Given a playlist, a sidx box, and a baseUrl, update the segment list of the playlist
+   * according to the sidx information given.
+   *
+   * playlist.sidx has metadadata about the sidx where-as the sidx param
+   * is the parsed sidx box itself.
+   *
+   * @param {Object} playlist the playlist to update the sidx information for
+   * @param {Object} sidx the parsed sidx box
+   * @return {Object} the playlist object with the updated sidx information
+   */
+
+  const addSidxSegmentsToPlaylist$1 = (playlist, sidx, baseUrl) => {
+    // Retain init segment information
+    const initSegment = playlist.sidx.map ? playlist.sidx.map : null; // Retain source duration from initial main manifest parsing
+
+    const sourceDuration = playlist.sidx.duration; // Retain source timeline
+
+    const timeline = playlist.timeline || 0;
+    const sidxByteRange = playlist.sidx.byterange;
+    const sidxEnd = sidxByteRange.offset + sidxByteRange.length; // Retain timescale of the parsed sidx
+
+    const timescale = sidx.timescale; // referenceType 1 refers to other sidx boxes
+
+    const mediaReferences = sidx.references.filter(r => r.referenceType !== 1);
+    const segments = [];
+    const type = playlist.endList ? 'static' : 'dynamic';
+    const periodStart = playlist.sidx.timeline;
+    let presentationTime = periodStart;
+    let number = playlist.mediaSequence || 0; // firstOffset is the offset from the end of the sidx box
+
+    let startIndex; // eslint-disable-next-line
+
+    if (typeof sidx.firstOffset === 'bigint') {
+      startIndex = window.BigInt(sidxEnd) + sidx.firstOffset;
+    } else {
+      startIndex = sidxEnd + sidx.firstOffset;
+    }
+    for (let i = 0; i < mediaReferences.length; i++) {
+      const reference = sidx.references[i]; // size of the referenced (sub)segment
+
+      const size = reference.referencedSize; // duration of the referenced (sub)segment, in  the  timescale
+      // this will be converted to seconds when generating segments
+
+      const duration = reference.subsegmentDuration; // should be an inclusive range
+
+      let endIndex; // eslint-disable-next-line
+
+      if (typeof startIndex === 'bigint') {
+        endIndex = startIndex + window.BigInt(size) - window.BigInt(1);
+      } else {
+        endIndex = startIndex + size - 1;
+      }
+      const indexRange = `${startIndex}-${endIndex}`;
+      const attributes = {
+        baseUrl,
+        timescale,
+        timeline,
+        periodStart,
+        presentationTime,
+        number,
+        duration,
+        sourceDuration,
+        indexRange,
+        type
+      };
+      const segment = segmentsFromBase(attributes)[0];
+      if (initSegment) {
+        segment.map = initSegment;
+      }
+      segments.push(segment);
+      if (typeof startIndex === 'bigint') {
+        startIndex += window.BigInt(size);
+      } else {
+        startIndex += size;
+      }
+      presentationTime += duration / timescale;
+      number++;
+    }
+    playlist.segments = segments;
+    return playlist;
+  };
+  const SUPPORTED_MEDIA_TYPES = ['AUDIO', 'SUBTITLES']; // allow one 60fps frame as leniency (arbitrarily chosen)
+
+  const TIME_FUDGE = 1 / 60;
+  /**
+   * Given a list of timelineStarts, combines, dedupes, and sorts them.
+   *
+   * @param {TimelineStart[]} timelineStarts - list of timeline starts
+   *
+   * @return {TimelineStart[]} the combined and deduped timeline starts
+   */
+
+  const getUniqueTimelineStarts = timelineStarts => {
+    return union(timelineStarts, ({
+      timeline
+    }) => timeline).sort((a, b) => a.timeline > b.timeline ? 1 : -1);
+  };
+  /**
+   * Finds the playlist with the matching NAME attribute.
+   *
+   * @param {Array} playlists - playlists to search through
+   * @param {string} name - the NAME attribute to search for
+   *
+   * @return {Object|null} the matching playlist object, or null
+   */
+
+  const findPlaylistWithName = (playlists, name) => {
+    for (let i = 0; i < playlists.length; i++) {
+      if (playlists[i].attributes.NAME === name) {
+        return playlists[i];
+      }
+    }
+    return null;
+  };
+  /**
+   * Gets a flattened array of media group playlists.
+   *
+   * @param {Object} manifest - the main manifest object
+   *
+   * @return {Array} the media group playlists
+   */
+
+  const getMediaGroupPlaylists = manifest => {
+    let mediaGroupPlaylists = [];
+    forEachMediaGroup$1(manifest, SUPPORTED_MEDIA_TYPES, (properties, type, group, label) => {
+      mediaGroupPlaylists = mediaGroupPlaylists.concat(properties.playlists || []);
+    });
+    return mediaGroupPlaylists;
+  };
+  /**
+   * Updates the playlist's media sequence numbers.
+   *
+   * @param {Object} config - options object
+   * @param {Object} config.playlist - the playlist to update
+   * @param {number} config.mediaSequence - the mediaSequence number to start with
+   */
+
+  const updateMediaSequenceForPlaylist = ({
+    playlist,
+    mediaSequence
+  }) => {
+    playlist.mediaSequence = mediaSequence;
+    playlist.segments.forEach((segment, index) => {
+      segment.number = playlist.mediaSequence + index;
+    });
+  };
+  /**
+   * Updates the media and discontinuity sequence numbers of newPlaylists given oldPlaylists
+   * and a complete list of timeline starts.
+   *
+   * If no matching playlist is found, only the discontinuity sequence number of the playlist
+   * will be updated.
+   *
+   * Since early available timelines are not supported, at least one segment must be present.
+   *
+   * @param {Object} config - options object
+   * @param {Object[]} oldPlaylists - the old playlists to use as a reference
+   * @param {Object[]} newPlaylists - the new playlists to update
+   * @param {Object} timelineStarts - all timelineStarts seen in the stream to this point
+   */
+
+  const updateSequenceNumbers = ({
+    oldPlaylists,
+    newPlaylists,
+    timelineStarts
+  }) => {
+    newPlaylists.forEach(playlist => {
+      playlist.discontinuitySequence = timelineStarts.findIndex(function ({
+        timeline
+      }) {
+        return timeline === playlist.timeline;
+      }); // Playlists NAMEs come from DASH Representation IDs, which are mandatory
+      // (see ISO_23009-1-2012 5.3.5.2).
+      //
+      // If the same Representation existed in a prior Period, it will retain the same NAME.
+
+      const oldPlaylist = findPlaylistWithName(oldPlaylists, playlist.attributes.NAME);
+      if (!oldPlaylist) {
+        // Since this is a new playlist, the media sequence values can start from 0 without
+        // consequence.
+        return;
+      } // TODO better support for live SIDX
+      //
+      // As of this writing, mpd-parser does not support multiperiod SIDX (in live or VOD).
+      // This is evident by a playlist only having a single SIDX reference. In a multiperiod
+      // playlist there would need to be multiple SIDX references. In addition, live SIDX is
+      // not supported when the SIDX properties change on refreshes.
+      //
+      // In the future, if support needs to be added, the merging logic here can be called
+      // after SIDX references are resolved. For now, exit early to prevent exceptions being
+      // thrown due to undefined references.
+
+      if (playlist.sidx) {
+        return;
+      } // Since we don't yet support early available timelines, we don't need to support
+      // playlists with no segments.
+
+      const firstNewSegment = playlist.segments[0];
+      const oldMatchingSegmentIndex = oldPlaylist.segments.findIndex(function (oldSegment) {
+        return Math.abs(oldSegment.presentationTime - firstNewSegment.presentationTime) < TIME_FUDGE;
+      }); // No matching segment from the old playlist means the entire playlist was refreshed.
+      // In this case the media sequence should account for this update, and the new segments
+      // should be marked as discontinuous from the prior content, since the last prior
+      // timeline was removed.
+
+      if (oldMatchingSegmentIndex === -1) {
+        updateMediaSequenceForPlaylist({
+          playlist,
+          mediaSequence: oldPlaylist.mediaSequence + oldPlaylist.segments.length
+        });
+        playlist.segments[0].discontinuity = true;
+        playlist.discontinuityStarts.unshift(0); // No matching segment does not necessarily mean there's missing content.
+        //
+        // If the new playlist's timeline is the same as the last seen segment's timeline,
+        // then a discontinuity can be added to identify that there's potentially missing
+        // content. If there's no missing content, the discontinuity should still be rather
+        // harmless. It's possible that if segment durations are accurate enough, that the
+        // existence of a gap can be determined using the presentation times and durations,
+        // but if the segment timing info is off, it may introduce more problems than simply
+        // adding the discontinuity.
+        //
+        // If the new playlist's timeline is different from the last seen segment's timeline,
+        // then a discontinuity can be added to identify that this is the first seen segment
+        // of a new timeline. However, the logic at the start of this function that
+        // determined the disconinuity sequence by timeline index is now off by one (the
+        // discontinuity of the newest timeline hasn't yet fallen off the manifest...since
+        // we added it), so the disconinuity sequence must be decremented.
+        //
+        // A period may also have a duration of zero, so the case of no segments is handled
+        // here even though we don't yet support early available periods.
+
+        if (!oldPlaylist.segments.length && playlist.timeline > oldPlaylist.timeline || oldPlaylist.segments.length && playlist.timeline > oldPlaylist.segments[oldPlaylist.segments.length - 1].timeline) {
+          playlist.discontinuitySequence--;
+        }
+        return;
+      } // If the first segment matched with a prior segment on a discontinuity (it's matching
+      // on the first segment of a period), then the discontinuitySequence shouldn't be the
+      // timeline's matching one, but instead should be the one prior, and the first segment
+      // of the new manifest should be marked with a discontinuity.
+      //
+      // The reason for this special case is that discontinuity sequence shows how many
+      // discontinuities have fallen off of the playlist, and discontinuities are marked on
+      // the first segment of a new "timeline." Because of this, while DASH will retain that
+      // Period while the "timeline" exists, HLS keeps track of it via the discontinuity
+      // sequence, and that first segment is an indicator, but can be removed before that
+      // timeline is gone.
+
+      const oldMatchingSegment = oldPlaylist.segments[oldMatchingSegmentIndex];
+      if (oldMatchingSegment.discontinuity && !firstNewSegment.discontinuity) {
+        firstNewSegment.discontinuity = true;
+        playlist.discontinuityStarts.unshift(0);
+        playlist.discontinuitySequence--;
+      }
+      updateMediaSequenceForPlaylist({
+        playlist,
+        mediaSequence: oldPlaylist.segments[oldMatchingSegmentIndex].number
+      });
+    });
+  };
+  /**
+   * Given an old parsed manifest object and a new parsed manifest object, updates the
+   * sequence and timing values within the new manifest to ensure that it lines up with the
+   * old.
+   *
+   * @param {Array} oldManifest - the old main manifest object
+   * @param {Array} newManifest - the new main manifest object
+   *
+   * @return {Object} the updated new manifest object
+   */
+
+  const positionManifestOnTimeline = ({
+    oldManifest,
+    newManifest
+  }) => {
+    // Starting from v4.1.2 of the IOP, section 4.4.3.3 states:
+    //
+    // "MPD@availabilityStartTime and Period@start shall not be changed over MPD updates."
+    //
+    // This was added from https://github.com/Dash-Industry-Forum/DASH-IF-IOP/issues/160
+    //
+    // Because of this change, and the difficulty of supporting periods with changing start
+    // times, periods with changing start times are not supported. This makes the logic much
+    // simpler, since periods with the same start time can be considerred the same period
+    // across refreshes.
+    //
+    // To give an example as to the difficulty of handling periods where the start time may
+    // change, if a single period manifest is refreshed with another manifest with a single
+    // period, and both the start and end times are increased, then the only way to determine
+    // if it's a new period or an old one that has changed is to look through the segments of
+    // each playlist and determine the presentation time bounds to find a match. In addition,
+    // if the period start changed to exceed the old period end, then there would be no
+    // match, and it would not be possible to determine whether the refreshed period is a new
+    // one or the old one.
+    const oldPlaylists = oldManifest.playlists.concat(getMediaGroupPlaylists(oldManifest));
+    const newPlaylists = newManifest.playlists.concat(getMediaGroupPlaylists(newManifest)); // Save all seen timelineStarts to the new manifest. Although this potentially means that
+    // there's a "memory leak" in that it will never stop growing, in reality, only a couple
+    // of properties are saved for each seen Period. Even long running live streams won't
+    // generate too many Periods, unless the stream is watched for decades. In the future,
+    // this can be optimized by mapping to discontinuity sequence numbers for each timeline,
+    // but it may not become an issue, and the additional info can be useful for debugging.
+
+    newManifest.timelineStarts = getUniqueTimelineStarts([oldManifest.timelineStarts, newManifest.timelineStarts]);
+    updateSequenceNumbers({
+      oldPlaylists,
+      newPlaylists,
+      timelineStarts: newManifest.timelineStarts
+    });
+    return newManifest;
+  };
+  const generateSidxKey = sidx => sidx && sidx.uri + '-' + byteRangeToString(sidx.byterange);
+  const mergeDiscontiguousPlaylists = playlists => {
+    // Break out playlists into groups based on their baseUrl
+    const playlistsByBaseUrl = playlists.reduce(function (acc, cur) {
+      if (!acc[cur.attributes.baseUrl]) {
+        acc[cur.attributes.baseUrl] = [];
+      }
+      acc[cur.attributes.baseUrl].push(cur);
+      return acc;
+    }, {});
+    let allPlaylists = [];
+    Object.values(playlistsByBaseUrl).forEach(playlistGroup => {
+      const mergedPlaylists = values(playlistGroup.reduce((acc, playlist) => {
+        // assuming playlist IDs are the same across periods
+        // TODO: handle multiperiod where representation sets are not the same
+        // across periods
+        const name = playlist.attributes.id + (playlist.attributes.lang || '');
+        if (!acc[name]) {
+          // First Period
+          acc[name] = playlist;
+          acc[name].attributes.timelineStarts = [];
+        } else {
+          // Subsequent Periods
+          if (playlist.segments) {
+            // first segment of subsequent periods signal a discontinuity
+            if (playlist.segments[0]) {
+              playlist.segments[0].discontinuity = true;
+            }
+            acc[name].segments.push(...playlist.segments);
+          } // bubble up contentProtection, this assumes all DRM content
+          // has the same contentProtection
+
+          if (playlist.attributes.contentProtection) {
+            acc[name].attributes.contentProtection = playlist.attributes.contentProtection;
+          }
+        }
+        acc[name].attributes.timelineStarts.push({
+          // Although they represent the same number, it's important to have both to make it
+          // compatible with HLS potentially having a similar attribute.
+          start: playlist.attributes.periodStart,
+          timeline: playlist.attributes.periodStart
+        });
+        return acc;
+      }, {}));
+      allPlaylists = allPlaylists.concat(mergedPlaylists);
+    });
+    return allPlaylists.map(playlist => {
+      playlist.discontinuityStarts = findIndexes(playlist.segments || [], 'discontinuity');
+      return playlist;
+    });
+  };
+  const addSidxSegmentsToPlaylist = (playlist, sidxMapping) => {
+    const sidxKey = generateSidxKey(playlist.sidx);
+    const sidxMatch = sidxKey && sidxMapping[sidxKey] && sidxMapping[sidxKey].sidx;
+    if (sidxMatch) {
+      addSidxSegmentsToPlaylist$1(playlist, sidxMatch, playlist.sidx.resolvedUri);
+    }
+    return playlist;
+  };
+  const addSidxSegmentsToPlaylists = (playlists, sidxMapping = {}) => {
+    if (!Object.keys(sidxMapping).length) {
+      return playlists;
+    }
+    for (const i in playlists) {
+      playlists[i] = addSidxSegmentsToPlaylist(playlists[i], sidxMapping);
+    }
+    return playlists;
+  };
+  const formatAudioPlaylist = ({
+    attributes,
+    segments,
+    sidx,
+    mediaSequence,
+    discontinuitySequence,
+    discontinuityStarts
+  }, isAudioOnly) => {
+    const playlist = {
+      attributes: {
+        NAME: attributes.id,
+        BANDWIDTH: attributes.bandwidth,
+        CODECS: attributes.codecs,
+        ['PROGRAM-ID']: 1
+      },
+      uri: '',
+      endList: attributes.type === 'static',
+      timeline: attributes.periodStart,
+      resolvedUri: attributes.baseUrl || '',
+      targetDuration: attributes.duration,
+      discontinuitySequence,
+      discontinuityStarts,
+      timelineStarts: attributes.timelineStarts,
+      mediaSequence,
+      segments
+    };
+    if (attributes.contentProtection) {
+      playlist.contentProtection = attributes.contentProtection;
+    }
+    if (attributes.serviceLocation) {
+      playlist.attributes.serviceLocation = attributes.serviceLocation;
+    }
+    if (sidx) {
+      playlist.sidx = sidx;
+    }
+    if (isAudioOnly) {
+      playlist.attributes.AUDIO = 'audio';
+      playlist.attributes.SUBTITLES = 'subs';
+    }
+    return playlist;
+  };
+  const formatVttPlaylist = ({
+    attributes,
+    segments,
+    mediaSequence,
+    discontinuityStarts,
+    discontinuitySequence
+  }) => {
+    if (typeof segments === 'undefined') {
+      // vtt tracks may use single file in BaseURL
+      segments = [{
+        uri: attributes.baseUrl,
+        timeline: attributes.periodStart,
+        resolvedUri: attributes.baseUrl || '',
+        duration: attributes.sourceDuration,
+        number: 0
+      }]; // targetDuration should be the same duration as the only segment
+
+      attributes.duration = attributes.sourceDuration;
+    }
+    const m3u8Attributes = {
+      NAME: attributes.id,
+      BANDWIDTH: attributes.bandwidth,
+      ['PROGRAM-ID']: 1
+    };
+    if (attributes.codecs) {
+      m3u8Attributes.CODECS = attributes.codecs;
+    }
+    const vttPlaylist = {
+      attributes: m3u8Attributes,
+      uri: '',
+      endList: attributes.type === 'static',
+      timeline: attributes.periodStart,
+      resolvedUri: attributes.baseUrl || '',
+      targetDuration: attributes.duration,
+      timelineStarts: attributes.timelineStarts,
+      discontinuityStarts,
+      discontinuitySequence,
+      mediaSequence,
+      segments
+    };
+    if (attributes.serviceLocation) {
+      vttPlaylist.attributes.serviceLocation = attributes.serviceLocation;
+    }
+    return vttPlaylist;
+  };
+  const organizeAudioPlaylists = (playlists, sidxMapping = {}, isAudioOnly = false) => {
+    let mainPlaylist;
+    const formattedPlaylists = playlists.reduce((a, playlist) => {
+      const role = playlist.attributes.role && playlist.attributes.role.value || '';
+      const language = playlist.attributes.lang || '';
+      let label = playlist.attributes.label || 'main';
+      if (language && !playlist.attributes.label) {
+        const roleLabel = role ? ` (${role})` : '';
+        label = `${playlist.attributes.lang}${roleLabel}`;
+      }
+      if (!a[label]) {
+        a[label] = {
+          language,
+          autoselect: true,
+          default: role === 'main',
+          playlists: [],
+          uri: ''
+        };
+      }
+      const formatted = addSidxSegmentsToPlaylist(formatAudioPlaylist(playlist, isAudioOnly), sidxMapping);
+      a[label].playlists.push(formatted);
+      if (typeof mainPlaylist === 'undefined' && role === 'main') {
+        mainPlaylist = playlist;
+        mainPlaylist.default = true;
+      }
+      return a;
+    }, {}); // if no playlists have role "main", mark the first as main
+
+    if (!mainPlaylist) {
+      const firstLabel = Object.keys(formattedPlaylists)[0];
+      formattedPlaylists[firstLabel].default = true;
+    }
+    return formattedPlaylists;
+  };
+  const organizeVttPlaylists = (playlists, sidxMapping = {}) => {
+    return playlists.reduce((a, playlist) => {
+      const label = playlist.attributes.label || playlist.attributes.lang || 'text';
+      if (!a[label]) {
+        a[label] = {
+          language: label,
+          default: false,
+          autoselect: false,
+          playlists: [],
+          uri: ''
+        };
+      }
+      a[label].playlists.push(addSidxSegmentsToPlaylist(formatVttPlaylist(playlist), sidxMapping));
+      return a;
+    }, {});
+  };
+  const organizeCaptionServices = captionServices => captionServices.reduce((svcObj, svc) => {
+    if (!svc) {
+      return svcObj;
+    }
+    svc.forEach(service => {
+      const {
+        channel,
+        language
+      } = service;
+      svcObj[language] = {
+        autoselect: false,
+        default: false,
+        instreamId: channel,
+        language
+      };
+      if (service.hasOwnProperty('aspectRatio')) {
+        svcObj[language].aspectRatio = service.aspectRatio;
+      }
+      if (service.hasOwnProperty('easyReader')) {
+        svcObj[language].easyReader = service.easyReader;
+      }
+      if (service.hasOwnProperty('3D')) {
+        svcObj[language]['3D'] = service['3D'];
+      }
+    });
+    return svcObj;
+  }, {});
+  const formatVideoPlaylist = ({
+    attributes,
+    segments,
+    sidx,
+    discontinuityStarts
+  }) => {
+    const playlist = {
+      attributes: {
+        NAME: attributes.id,
+        AUDIO: 'audio',
+        SUBTITLES: 'subs',
+        RESOLUTION: {
+          width: attributes.width,
+          height: attributes.height
+        },
+        CODECS: attributes.codecs,
+        BANDWIDTH: attributes.bandwidth,
+        ['PROGRAM-ID']: 1
+      },
+      uri: '',
+      endList: attributes.type === 'static',
+      timeline: attributes.periodStart,
+      resolvedUri: attributes.baseUrl || '',
+      targetDuration: attributes.duration,
+      discontinuityStarts,
+      timelineStarts: attributes.timelineStarts,
+      segments
+    };
+    if (attributes.frameRate) {
+      playlist.attributes['FRAME-RATE'] = attributes.frameRate;
+    }
+    if (attributes.contentProtection) {
+      playlist.contentProtection = attributes.contentProtection;
+    }
+    if (attributes.serviceLocation) {
+      playlist.attributes.serviceLocation = attributes.serviceLocation;
+    }
+    if (sidx) {
+      playlist.sidx = sidx;
+    }
+    return playlist;
+  };
+  const videoOnly = ({
+    attributes
+  }) => attributes.mimeType === 'video/mp4' || attributes.mimeType === 'video/webm' || attributes.contentType === 'video';
+  const audioOnly = ({
+    attributes
+  }) => attributes.mimeType === 'audio/mp4' || attributes.mimeType === 'audio/webm' || attributes.contentType === 'audio';
+  const vttOnly = ({
+    attributes
+  }) => attributes.mimeType === 'text/vtt' || attributes.contentType === 'text';
+  /**
+   * Contains start and timeline properties denoting a timeline start. For DASH, these will
+   * be the same number.
+   *
+   * @typedef {Object} TimelineStart
+   * @property {number} start - the start time of the timeline
+   * @property {number} timeline - the timeline number
+   */
+
+  /**
+   * Adds appropriate media and discontinuity sequence values to the segments and playlists.
+   *
+   * Throughout mpd-parser, the `number` attribute is used in relation to `startNumber`, a
+   * DASH specific attribute used in constructing segment URI's from templates. However, from
+   * an HLS perspective, the `number` attribute on a segment would be its `mediaSequence`
+   * value, which should start at the original media sequence value (or 0) and increment by 1
+   * for each segment thereafter. Since DASH's `startNumber` values are independent per
+   * period, it doesn't make sense to use it for `number`. Instead, assume everything starts
+   * from a 0 mediaSequence value and increment from there.
+   *
+   * Note that VHS currently doesn't use the `number` property, but it can be helpful for
+   * debugging and making sense of the manifest.
+   *
+   * For live playlists, to account for values increasing in manifests when periods are
+   * removed on refreshes, merging logic should be used to update the numbers to their
+   * appropriate values (to ensure they're sequential and increasing).
+   *
+   * @param {Object[]} playlists - the playlists to update
+   * @param {TimelineStart[]} timelineStarts - the timeline starts for the manifest
+   */
+
+  const addMediaSequenceValues = (playlists, timelineStarts) => {
+    // increment all segments sequentially
+    playlists.forEach(playlist => {
+      playlist.mediaSequence = 0;
+      playlist.discontinuitySequence = timelineStarts.findIndex(function ({
+        timeline
+      }) {
+        return timeline === playlist.timeline;
+      });
+      if (!playlist.segments) {
+        return;
+      }
+      playlist.segments.forEach((segment, index) => {
+        segment.number = index;
+      });
+    });
+  };
+  /**
+   * Given a media group object, flattens all playlists within the media group into a single
+   * array.
+   *
+   * @param {Object} mediaGroupObject - the media group object
+   *
+   * @return {Object[]}
+   *         The media group playlists
+   */
+
+  const flattenMediaGroupPlaylists = mediaGroupObject => {
+    if (!mediaGroupObject) {
+      return [];
+    }
+    return Object.keys(mediaGroupObject).reduce((acc, label) => {
+      const labelContents = mediaGroupObject[label];
+      return acc.concat(labelContents.playlists);
+    }, []);
+  };
+  const toM3u8 = ({
+    dashPlaylists,
+    locations,
+    contentSteering,
+    sidxMapping = {},
+    previousManifest,
+    eventStream
+  }) => {
+    if (!dashPlaylists.length) {
+      return {};
+    } // grab all main manifest attributes
+
+    const {
+      sourceDuration: duration,
+      type,
+      suggestedPresentationDelay,
+      minimumUpdatePeriod
+    } = dashPlaylists[0].attributes;
+    const videoPlaylists = mergeDiscontiguousPlaylists(dashPlaylists.filter(videoOnly)).map(formatVideoPlaylist);
+    const audioPlaylists = mergeDiscontiguousPlaylists(dashPlaylists.filter(audioOnly));
+    const vttPlaylists = mergeDiscontiguousPlaylists(dashPlaylists.filter(vttOnly));
+    const captions = dashPlaylists.map(playlist => playlist.attributes.captionServices).filter(Boolean);
+    const manifest = {
+      allowCache: true,
+      discontinuityStarts: [],
+      segments: [],
+      endList: true,
+      mediaGroups: {
+        AUDIO: {},
+        VIDEO: {},
+        ['CLOSED-CAPTIONS']: {},
+        SUBTITLES: {}
+      },
+      uri: '',
+      duration,
+      playlists: addSidxSegmentsToPlaylists(videoPlaylists, sidxMapping)
+    };
+    if (minimumUpdatePeriod >= 0) {
+      manifest.minimumUpdatePeriod = minimumUpdatePeriod * 1000;
+    }
+    if (locations) {
+      manifest.locations = locations;
+    }
+    if (contentSteering) {
+      manifest.contentSteering = contentSteering;
+    }
+    if (type === 'dynamic') {
+      manifest.suggestedPresentationDelay = suggestedPresentationDelay;
+    }
+    if (eventStream && eventStream.length > 0) {
+      manifest.eventStream = eventStream;
+    }
+    const isAudioOnly = manifest.playlists.length === 0;
+    const organizedAudioGroup = audioPlaylists.length ? organizeAudioPlaylists(audioPlaylists, sidxMapping, isAudioOnly) : null;
+    const organizedVttGroup = vttPlaylists.length ? organizeVttPlaylists(vttPlaylists, sidxMapping) : null;
+    const formattedPlaylists = videoPlaylists.concat(flattenMediaGroupPlaylists(organizedAudioGroup), flattenMediaGroupPlaylists(organizedVttGroup));
+    const playlistTimelineStarts = formattedPlaylists.map(({
+      timelineStarts
+    }) => timelineStarts);
+    manifest.timelineStarts = getUniqueTimelineStarts(playlistTimelineStarts);
+    addMediaSequenceValues(formattedPlaylists, manifest.timelineStarts);
+    if (organizedAudioGroup) {
+      manifest.mediaGroups.AUDIO.audio = organizedAudioGroup;
+    }
+    if (organizedVttGroup) {
+      manifest.mediaGroups.SUBTITLES.subs = organizedVttGroup;
+    }
+    if (captions.length) {
+      manifest.mediaGroups['CLOSED-CAPTIONS'].cc = organizeCaptionServices(captions);
+    }
+    if (previousManifest) {
+      return positionManifestOnTimeline({
+        oldManifest: previousManifest,
+        newManifest: manifest
+      });
+    }
+    return manifest;
+  };
+
+  /**
+   * Calculates the R (repetition) value for a live stream (for the final segment
+   * in a manifest where the r value is negative 1)
+   *
+   * @param {Object} attributes
+   *        Object containing all inherited attributes from parent elements with attribute
+   *        names as keys
+   * @param {number} time
+   *        current time (typically the total time up until the final segment)
+   * @param {number} duration
+   *        duration property for the given <S />
+   *
+   * @return {number}
+   *        R value to reach the end of the given period
+   */
+  const getLiveRValue = (attributes, time, duration) => {
+    const {
+      NOW,
+      clientOffset,
+      availabilityStartTime,
+      timescale = 1,
+      periodStart = 0,
+      minimumUpdatePeriod = 0
+    } = attributes;
+    const now = (NOW + clientOffset) / 1000;
+    const periodStartWC = availabilityStartTime + periodStart;
+    const periodEndWC = now + minimumUpdatePeriod;
+    const periodDuration = periodEndWC - periodStartWC;
+    return Math.ceil((periodDuration * timescale - time) / duration);
+  };
+  /**
+   * Uses information provided by SegmentTemplate.SegmentTimeline to determine segment
+   * timing and duration
+   *
+   * @param {Object} attributes
+   *        Object containing all inherited attributes from parent elements with attribute
+   *        names as keys
+   * @param {Object[]} segmentTimeline
+   *        List of objects representing the attributes of each S element contained within
+   *
+   * @return {{number: number, duration: number, time: number, timeline: number}[]}
+   *         List of Objects with segment timing and duration info
+   */
+
+  const parseByTimeline = (attributes, segmentTimeline) => {
+    const {
+      type,
+      minimumUpdatePeriod = 0,
+      media = '',
+      sourceDuration,
+      timescale = 1,
+      startNumber = 1,
+      periodStart: timeline
+    } = attributes;
+    const segments = [];
+    let time = -1;
+    for (let sIndex = 0; sIndex < segmentTimeline.length; sIndex++) {
+      const S = segmentTimeline[sIndex];
+      const duration = S.d;
+      const repeat = S.r || 0;
+      const segmentTime = S.t || 0;
+      if (time < 0) {
+        // first segment
+        time = segmentTime;
+      }
+      if (segmentTime && segmentTime > time) {
+        // discontinuity
+        // TODO: How to handle this type of discontinuity
+        // timeline++ here would treat it like HLS discontuity and content would
+        // get appended without gap
+        // E.G.
+        //  <S t="0" d="1" />
+        //  <S d="1" />
+        //  <S d="1" />
+        //  <S t="5" d="1" />
+        // would have $Time$ values of [0, 1, 2, 5]
+        // should this be appened at time positions [0, 1, 2, 3],(#EXT-X-DISCONTINUITY)
+        // or [0, 1, 2, gap, gap, 5]? (#EXT-X-GAP)
+        // does the value of sourceDuration consider this when calculating arbitrary
+        // negative @r repeat value?
+        // E.G. Same elements as above with this added at the end
+        //  <S d="1" r="-1" />
+        //  with a sourceDuration of 10
+        // Would the 2 gaps be included in the time duration calculations resulting in
+        // 8 segments with $Time$ values of [0, 1, 2, 5, 6, 7, 8, 9] or 10 segments
+        // with $Time$ values of [0, 1, 2, 5, 6, 7, 8, 9, 10, 11] ?
+        time = segmentTime;
+      }
+      let count;
+      if (repeat < 0) {
+        const nextS = sIndex + 1;
+        if (nextS === segmentTimeline.length) {
+          // last segment
+          if (type === 'dynamic' && minimumUpdatePeriod > 0 && media.indexOf('$Number$') > 0) {
+            count = getLiveRValue(attributes, time, duration);
+          } else {
+            // TODO: This may be incorrect depending on conclusion of TODO above
+            count = (sourceDuration * timescale - time) / duration;
+          }
+        } else {
+          count = (segmentTimeline[nextS].t - time) / duration;
+        }
+      } else {
+        count = repeat + 1;
+      }
+      const end = startNumber + segments.length + count;
+      let number = startNumber + segments.length;
+      while (number < end) {
+        segments.push({
+          number,
+          duration: duration / timescale,
+          time,
+          timeline
+        });
+        time += duration;
+        number++;
+      }
+    }
+    return segments;
+  };
+  const identifierPattern = /\$([A-z]*)(?:(%0)([0-9]+)d)?\$/g;
+  /**
+   * Replaces template identifiers with corresponding values. To be used as the callback
+   * for String.prototype.replace
+   *
+   * @name replaceCallback
+   * @function
+   * @param {string} match
+   *        Entire match of identifier
+   * @param {string} identifier
+   *        Name of matched identifier
+   * @param {string} format
+   *        Format tag string. Its presence indicates that padding is expected
+   * @param {string} width
+   *        Desired length of the replaced value. Values less than this width shall be left
+   *        zero padded
+   * @return {string}
+   *         Replacement for the matched identifier
+   */
+
+  /**
+   * Returns a function to be used as a callback for String.prototype.replace to replace
+   * template identifiers
+   *
+   * @param {Obect} values
+   *        Object containing values that shall be used to replace known identifiers
+   * @param {number} values.RepresentationID
+   *        Value of the Representation@id attribute
+   * @param {number} values.Number
+   *        Number of the corresponding segment
+   * @param {number} values.Bandwidth
+   *        Value of the Representation@bandwidth attribute.
+   * @param {number} values.Time
+   *        Timestamp value of the corresponding segment
+   * @return {replaceCallback}
+   *         Callback to be used with String.prototype.replace to replace identifiers
+   */
+
+  const identifierReplacement = values => (match, identifier, format, width) => {
+    if (match === '$$') {
+      // escape sequence
+      return '$';
+    }
+    if (typeof values[identifier] === 'undefined') {
+      return match;
+    }
+    const value = '' + values[identifier];
+    if (identifier === 'RepresentationID') {
+      // Format tag shall not be present with RepresentationID
+      return value;
+    }
+    if (!format) {
+      width = 1;
+    } else {
+      width = parseInt(width, 10);
+    }
+    if (value.length >= width) {
+      return value;
+    }
+    return `${new Array(width - value.length + 1).join('0')}${value}`;
+  };
+  /**
+   * Constructs a segment url from a template string
+   *
+   * @param {string} url
+   *        Template string to construct url from
+   * @param {Obect} values
+   *        Object containing values that shall be used to replace known identifiers
+   * @param {number} values.RepresentationID
+   *        Value of the Representation@id attribute
+   * @param {number} values.Number
+   *        Number of the corresponding segment
+   * @param {number} values.Bandwidth
+   *        Value of the Representation@bandwidth attribute.
+   * @param {number} values.Time
+   *        Timestamp value of the corresponding segment
+   * @return {string}
+   *         Segment url with identifiers replaced
+   */
+
+  const constructTemplateUrl = (url, values) => url.replace(identifierPattern, identifierReplacement(values));
+  /**
+   * Generates a list of objects containing timing and duration information about each
+   * segment needed to generate segment uris and the complete segment object
+   *
+   * @param {Object} attributes
+   *        Object containing all inherited attributes from parent elements with attribute
+   *        names as keys
+   * @param {Object[]|undefined} segmentTimeline
+   *        List of objects representing the attributes of each S element contained within
+   *        the SegmentTimeline element
+   * @return {{number: number, duration: number, time: number, timeline: number}[]}
+   *         List of Objects with segment timing and duration info
+   */
+
+  const parseTemplateInfo = (attributes, segmentTimeline) => {
+    if (!attributes.duration && !segmentTimeline) {
+      // if neither @duration or SegmentTimeline are present, then there shall be exactly
+      // one media segment
+      return [{
+        number: attributes.startNumber || 1,
+        duration: attributes.sourceDuration,
+        time: 0,
+        timeline: attributes.periodStart
+      }];
+    }
+    if (attributes.duration) {
+      return parseByDuration(attributes);
+    }
+    return parseByTimeline(attributes, segmentTimeline);
+  };
+  /**
+   * Generates a list of segments using information provided by the SegmentTemplate element
+   *
+   * @param {Object} attributes
+   *        Object containing all inherited attributes from parent elements with attribute
+   *        names as keys
+   * @param {Object[]|undefined} segmentTimeline
+   *        List of objects representing the attributes of each S element contained within
+   *        the SegmentTimeline element
+   * @return {Object[]}
+   *         List of segment objects
+   */
+
+  const segmentsFromTemplate = (attributes, segmentTimeline) => {
+    const templateValues = {
+      RepresentationID: attributes.id,
+      Bandwidth: attributes.bandwidth || 0
+    };
+    const {
+      initialization = {
+        sourceURL: '',
+        range: ''
+      }
+    } = attributes;
+    const mapSegment = urlTypeToSegment({
+      baseUrl: attributes.baseUrl,
+      source: constructTemplateUrl(initialization.sourceURL, templateValues),
+      range: initialization.range
+    });
+    const segments = parseTemplateInfo(attributes, segmentTimeline);
+    return segments.map(segment => {
+      templateValues.Number = segment.number;
+      templateValues.Time = segment.time;
+      const uri = constructTemplateUrl(attributes.media || '', templateValues); // See DASH spec section 5.3.9.2.2
+      // - if timescale isn't present on any level, default to 1.
+
+      const timescale = attributes.timescale || 1; // - if presentationTimeOffset isn't present on any level, default to 0
+
+      const presentationTimeOffset = attributes.presentationTimeOffset || 0;
+      const presentationTime =
+      // Even if the @t attribute is not specified for the segment, segment.time is
+      // calculated in mpd-parser prior to this, so it's assumed to be available.
+      attributes.periodStart + (segment.time - presentationTimeOffset) / timescale;
+      const map = {
+        uri,
+        timeline: segment.timeline,
+        duration: segment.duration,
+        resolvedUri: resolveUrl$1(attributes.baseUrl || '', uri),
+        map: mapSegment,
+        number: segment.number,
+        presentationTime
+      };
+      return map;
+    });
+  };
+
+  /**
+   * Converts a <SegmentUrl> (of type URLType from the DASH spec 5.3.9.2 Table 14)
+   * to an object that matches the output of a segment in videojs/mpd-parser
+   *
+   * @param {Object} attributes
+   *   Object containing all inherited attributes from parent elements with attribute
+   *   names as keys
+   * @param {Object} segmentUrl
+   *   <SegmentURL> node to translate into a segment object
+   * @return {Object} translated segment object
+   */
+
+  const SegmentURLToSegmentObject = (attributes, segmentUrl) => {
+    const {
+      baseUrl,
+      initialization = {}
+    } = attributes;
+    const initSegment = urlTypeToSegment({
+      baseUrl,
+      source: initialization.sourceURL,
+      range: initialization.range
+    });
+    const segment = urlTypeToSegment({
+      baseUrl,
+      source: segmentUrl.media,
+      range: segmentUrl.mediaRange
+    });
+    segment.map = initSegment;
+    return segment;
+  };
+  /**
+   * Generates a list of segments using information provided by the SegmentList element
+   * SegmentList (DASH SPEC Section 5.3.9.3.2) contains a set of <SegmentURL> nodes.  Each
+   * node should be translated into segment.
+   *
+   * @param {Object} attributes
+   *   Object containing all inherited attributes from parent elements with attribute
+   *   names as keys
+   * @param {Object[]|undefined} segmentTimeline
+   *        List of objects representing the attributes of each S element contained within
+   *        the SegmentTimeline element
+   * @return {Object.<Array>} list of segments
+   */
+
+  const segmentsFromList = (attributes, segmentTimeline) => {
+    const {
+      duration,
+      segmentUrls = [],
+      periodStart
+    } = attributes; // Per spec (5.3.9.2.1) no way to determine segment duration OR
+    // if both SegmentTimeline and @duration are defined, it is outside of spec.
+
+    if (!duration && !segmentTimeline || duration && segmentTimeline) {
+      throw new Error(errors.SEGMENT_TIME_UNSPECIFIED);
+    }
+    const segmentUrlMap = segmentUrls.map(segmentUrlObject => SegmentURLToSegmentObject(attributes, segmentUrlObject));
+    let segmentTimeInfo;
+    if (duration) {
+      segmentTimeInfo = parseByDuration(attributes);
+    }
+    if (segmentTimeline) {
+      segmentTimeInfo = parseByTimeline(attributes, segmentTimeline);
+    }
+    const segments = segmentTimeInfo.map((segmentTime, index) => {
+      if (segmentUrlMap[index]) {
+        const segment = segmentUrlMap[index]; // See DASH spec section 5.3.9.2.2
+        // - if timescale isn't present on any level, default to 1.
+
+        const timescale = attributes.timescale || 1; // - if presentationTimeOffset isn't present on any level, default to 0
+
+        const presentationTimeOffset = attributes.presentationTimeOffset || 0;
+        segment.timeline = segmentTime.timeline;
+        segment.duration = segmentTime.duration;
+        segment.number = segmentTime.number;
+        segment.presentationTime = periodStart + (segmentTime.time - presentationTimeOffset) / timescale;
+        return segment;
+      } // Since we're mapping we should get rid of any blank segments (in case
+      // the given SegmentTimeline is handling for more elements than we have
+      // SegmentURLs for).
+    }).filter(segment => segment);
+    return segments;
+  };
+  const generateSegments = ({
+    attributes,
+    segmentInfo
+  }) => {
+    let segmentAttributes;
+    let segmentsFn;
+    if (segmentInfo.template) {
+      segmentsFn = segmentsFromTemplate;
+      segmentAttributes = merge$1(attributes, segmentInfo.template);
+    } else if (segmentInfo.base) {
+      segmentsFn = segmentsFromBase;
+      segmentAttributes = merge$1(attributes, segmentInfo.base);
+    } else if (segmentInfo.list) {
+      segmentsFn = segmentsFromList;
+      segmentAttributes = merge$1(attributes, segmentInfo.list);
+    }
+    const segmentsInfo = {
+      attributes
+    };
+    if (!segmentsFn) {
+      return segmentsInfo;
+    }
+    const segments = segmentsFn(segmentAttributes, segmentInfo.segmentTimeline); // The @duration attribute will be used to determin the playlist's targetDuration which
+    // must be in seconds. Since we've generated the segment list, we no longer need
+    // @duration to be in @timescale units, so we can convert it here.
+
+    if (segmentAttributes.duration) {
+      const {
+        duration,
+        timescale = 1
+      } = segmentAttributes;
+      segmentAttributes.duration = duration / timescale;
+    } else if (segments.length) {
+      // if there is no @duration attribute, use the largest segment duration as
+      // as target duration
+      segmentAttributes.duration = segments.reduce((max, segment) => {
+        return Math.max(max, Math.ceil(segment.duration));
+      }, 0);
+    } else {
+      segmentAttributes.duration = 0;
+    }
+    segmentsInfo.attributes = segmentAttributes;
+    segmentsInfo.segments = segments; // This is a sidx box without actual segment information
+
+    if (segmentInfo.base && segmentAttributes.indexRange) {
+      segmentsInfo.sidx = segments[0];
+      segmentsInfo.segments = [];
+    }
+    return segmentsInfo;
+  };
+  const toPlaylists = representations => representations.map(generateSegments);
+  const findChildren = (element, name) => from(element.childNodes).filter(({
+    tagName
+  }) => tagName === name);
+  const getContent = element => element.textContent.trim();
+
+  /**
+   * Converts the provided string that may contain a division operation to a number.
+   *
+   * @param {string} value - the provided string value
+   *
+   * @return {number} the parsed string value
+   */
+  const parseDivisionValue = value => {
+    return parseFloat(value.split('/').reduce((prev, current) => prev / current));
+  };
+  const parseDuration = str => {
+    const SECONDS_IN_YEAR = 365 * 24 * 60 * 60;
+    const SECONDS_IN_MONTH = 30 * 24 * 60 * 60;
+    const SECONDS_IN_DAY = 24 * 60 * 60;
+    const SECONDS_IN_HOUR = 60 * 60;
+    const SECONDS_IN_MIN = 60; // P10Y10M10DT10H10M10.1S
+
+    const durationRegex = /P(?:(\d*)Y)?(?:(\d*)M)?(?:(\d*)D)?(?:T(?:(\d*)H)?(?:(\d*)M)?(?:([\d.]*)S)?)?/;
+    const match = durationRegex.exec(str);
+    if (!match) {
+      return 0;
+    }
+    const [year, month, day, hour, minute, second] = match.slice(1);
+    return parseFloat(year || 0) * SECONDS_IN_YEAR + parseFloat(month || 0) * SECONDS_IN_MONTH + parseFloat(day || 0) * SECONDS_IN_DAY + parseFloat(hour || 0) * SECONDS_IN_HOUR + parseFloat(minute || 0) * SECONDS_IN_MIN + parseFloat(second || 0);
+  };
+  const parseDate = str => {
+    // Date format without timezone according to ISO 8601
+    // YYY-MM-DDThh:mm:ss.ssssss
+    const dateRegex = /^\d+-\d+-\d+T\d+:\d+:\d+(\.\d+)?$/; // If the date string does not specifiy a timezone, we must specifiy UTC. This is
+    // expressed by ending with 'Z'
+
+    if (dateRegex.test(str)) {
+      str += 'Z';
+    }
+    return Date.parse(str);
+  };
+  const parsers = {
+    /**
+     * Specifies the duration of the entire Media Presentation. Format is a duration string
+     * as specified in ISO 8601
+     *
+     * @param {string} value
+     *        value of attribute as a string
+     * @return {number}
+     *         The duration in seconds
+     */
+    mediaPresentationDuration(value) {
+      return parseDuration(value);
+    },
+    /**
+     * Specifies the Segment availability start time for all Segments referred to in this
+     * MPD. For a dynamic manifest, it specifies the anchor for the earliest availability
+     * time. Format is a date string as specified in ISO 8601
+     *
+     * @param {string} value
+     *        value of attribute as a string
+     * @return {number}
+     *         The date as seconds from unix epoch
+     */
+    availabilityStartTime(value) {
+      return parseDate(value) / 1000;
+    },
+    /**
+     * Specifies the smallest period between potential changes to the MPD. Format is a
+     * duration string as specified in ISO 8601
+     *
+     * @param {string} value
+     *        value of attribute as a string
+     * @return {number}
+     *         The duration in seconds
+     */
+    minimumUpdatePeriod(value) {
+      return parseDuration(value);
+    },
+    /**
+     * Specifies the suggested presentation delay. Format is a
+     * duration string as specified in ISO 8601
+     *
+     * @param {string} value
+     *        value of attribute as a string
+     * @return {number}
+     *         The duration in seconds
+     */
+    suggestedPresentationDelay(value) {
+      return parseDuration(value);
+    },
+    /**
+     * specifices the type of mpd. Can be either "static" or "dynamic"
+     *
+     * @param {string} value
+     *        value of attribute as a string
+     *
+     * @return {string}
+     *         The type as a string
+     */
+    type(value) {
+      return value;
+    },
+    /**
+     * Specifies the duration of the smallest time shifting buffer for any Representation
+     * in the MPD. Format is a duration string as specified in ISO 8601
+     *
+     * @param {string} value
+     *        value of attribute as a string
+     * @return {number}
+     *         The duration in seconds
+     */
+    timeShiftBufferDepth(value) {
+      return parseDuration(value);
+    },
+    /**
+     * Specifies the PeriodStart time of the Period relative to the availabilityStarttime.
+     * Format is a duration string as specified in ISO 8601
+     *
+     * @param {string} value
+     *        value of attribute as a string
+     * @return {number}
+     *         The duration in seconds
+     */
+    start(value) {
+      return parseDuration(value);
+    },
+    /**
+     * Specifies the width of the visual presentation
+     *
+     * @param {string} value
+     *        value of attribute as a string
+     * @return {number}
+     *         The parsed width
+     */
+    width(value) {
+      return parseInt(value, 10);
+    },
+    /**
+     * Specifies the height of the visual presentation
+     *
+     * @param {string} value
+     *        value of attribute as a string
+     * @return {number}
+     *         The parsed height
+     */
+    height(value) {
+      return parseInt(value, 10);
+    },
+    /**
+     * Specifies the bitrate of the representation
+     *
+     * @param {string} value
+     *        value of attribute as a string
+     * @return {number}
+     *         The parsed bandwidth
+     */
+    bandwidth(value) {
+      return parseInt(value, 10);
+    },
+    /**
+     * Specifies the frame rate of the representation
+     *
+     * @param {string} value
+     *        value of attribute as a string
+     * @return {number}
+     *         The parsed frame rate
+     */
+    frameRate(value) {
+      return parseDivisionValue(value);
+    },
+    /**
+     * Specifies the number of the first Media Segment in this Representation in the Period
+     *
+     * @param {string} value
+     *        value of attribute as a string
+     * @return {number}
+     *         The parsed number
+     */
+    startNumber(value) {
+      return parseInt(value, 10);
+    },
+    /**
+     * Specifies the timescale in units per seconds
+     *
+     * @param {string} value
+     *        value of attribute as a string
+     * @return {number}
+     *         The parsed timescale
+     */
+    timescale(value) {
+      return parseInt(value, 10);
+    },
+    /**
+     * Specifies the presentationTimeOffset.
+     *
+     * @param {string} value
+     *        value of the attribute as a string
+     *
+     * @return {number}
+     *         The parsed presentationTimeOffset
+     */
+    presentationTimeOffset(value) {
+      return parseInt(value, 10);
+    },
+    /**
+     * Specifies the constant approximate Segment duration
+     * NOTE: The <Period> element also contains an @duration attribute. This duration
+     *       specifies the duration of the Period. This attribute is currently not
+     *       supported by the rest of the parser, however we still check for it to prevent
+     *       errors.
+     *
+     * @param {string} value
+     *        value of attribute as a string
+     * @return {number}
+     *         The parsed duration
+     */
+    duration(value) {
+      const parsedValue = parseInt(value, 10);
+      if (isNaN(parsedValue)) {
+        return parseDuration(value);
+      }
+      return parsedValue;
+    },
+    /**
+     * Specifies the Segment duration, in units of the value of the @timescale.
+     *
+     * @param {string} value
+     *        value of attribute as a string
+     * @return {number}
+     *         The parsed duration
+     */
+    d(value) {
+      return parseInt(value, 10);
+    },
+    /**
+     * Specifies the MPD start time, in @timescale units, the first Segment in the series
+     * starts relative to the beginning of the Period
+     *
+     * @param {string} value
+     *        value of attribute as a string
+     * @return {number}
+     *         The parsed time
+     */
+    t(value) {
+      return parseInt(value, 10);
+    },
+    /**
+     * Specifies the repeat count of the number of following contiguous Segments with the
+     * same duration expressed by the value of @d
+     *
+     * @param {string} value
+     *        value of attribute as a string
+     * @return {number}
+     *         The parsed number
+     */
+    r(value) {
+      return parseInt(value, 10);
+    },
+    /**
+     * Specifies the presentationTime.
+     *
+     * @param {string} value
+     *        value of the attribute as a string
+     *
+     * @return {number}
+     *         The parsed presentationTime
+     */
+    presentationTime(value) {
+      return parseInt(value, 10);
+    },
+    /**
+     * Default parser for all other attributes. Acts as a no-op and just returns the value
+     * as a string
+     *
+     * @param {string} value
+     *        value of attribute as a string
+     * @return {string}
+     *         Unparsed value
+     */
+    DEFAULT(value) {
+      return value;
+    }
+  };
+  /**
+   * Gets all the attributes and values of the provided node, parses attributes with known
+   * types, and returns an object with attribute names mapped to values.
+   *
+   * @param {Node} el
+   *        The node to parse attributes from
+   * @return {Object}
+   *         Object with all attributes of el parsed
+   */
+
+  const parseAttributes = el => {
+    if (!(el && el.attributes)) {
+      return {};
+    }
+    return from(el.attributes).reduce((a, e) => {
+      const parseFn = parsers[e.name] || parsers.DEFAULT;
+      a[e.name] = parseFn(e.value);
+      return a;
+    }, {});
+  };
+  const keySystemsMap = {
+    'urn:uuid:1077efec-c0b2-4d02-ace3-3c1e52e2fb4b': 'org.w3.clearkey',
+    'urn:uuid:edef8ba9-79d6-4ace-a3c8-27dcd51d21ed': 'com.widevine.alpha',
+    'urn:uuid:9a04f079-9840-4286-ab92-e65be0885f95': 'com.microsoft.playready',
+    'urn:uuid:f239e769-efa3-4850-9c16-a903c6932efb': 'com.adobe.primetime',
+    // ISO_IEC 23009-1_2022 5.8.5.2.2 The mp4 Protection Scheme
+    'urn:mpeg:dash:mp4protection:2011': 'mp4protection'
+  };
+  /**
+   * Builds a list of urls that is the product of the reference urls and BaseURL values
+   *
+   * @param {Object[]} references
+   *        List of objects containing the reference URL as well as its attributes
+   * @param {Node[]} baseUrlElements
+   *        List of BaseURL nodes from the mpd
+   * @return {Object[]}
+   *         List of objects with resolved urls and attributes
+   */
+
+  const buildBaseUrls = (references, baseUrlElements) => {
+    if (!baseUrlElements.length) {
+      return references;
+    }
+    return flatten(references.map(function (reference) {
+      return baseUrlElements.map(function (baseUrlElement) {
+        const initialBaseUrl = getContent(baseUrlElement);
+        const resolvedBaseUrl = resolveUrl$1(reference.baseUrl, initialBaseUrl);
+        const finalBaseUrl = merge$1(parseAttributes(baseUrlElement), {
+          baseUrl: resolvedBaseUrl
+        }); // If the URL is resolved, we want to get the serviceLocation from the reference
+        // assuming there is no serviceLocation on the initialBaseUrl
+
+        if (resolvedBaseUrl !== initialBaseUrl && !finalBaseUrl.serviceLocation && reference.serviceLocation) {
+          finalBaseUrl.serviceLocation = reference.serviceLocation;
+        }
+        return finalBaseUrl;
+      });
+    }));
+  };
+  /**
+   * Contains all Segment information for its containing AdaptationSet
+   *
+   * @typedef {Object} SegmentInformation
+   * @property {Object|undefined} template
+   *           Contains the attributes for the SegmentTemplate node
+   * @property {Object[]|undefined} segmentTimeline
+   *           Contains a list of atrributes for each S node within the SegmentTimeline node
+   * @property {Object|undefined} list
+   *           Contains the attributes for the SegmentList node
+   * @property {Object|undefined} base
+   *           Contains the attributes for the SegmentBase node
+   */
+
+  /**
+   * Returns all available Segment information contained within the AdaptationSet node
+   *
+   * @param {Node} adaptationSet
+   *        The AdaptationSet node to get Segment information from
+   * @return {SegmentInformation}
+   *         The Segment information contained within the provided AdaptationSet
+   */
+
+  const getSegmentInformation = adaptationSet => {
+    const segmentTemplate = findChildren(adaptationSet, 'SegmentTemplate')[0];
+    const segmentList = findChildren(adaptationSet, 'SegmentList')[0];
+    const segmentUrls = segmentList && findChildren(segmentList, 'SegmentURL').map(s => merge$1({
+      tag: 'SegmentURL'
+    }, parseAttributes(s)));
+    const segmentBase = findChildren(adaptationSet, 'SegmentBase')[0];
+    const segmentTimelineParentNode = segmentList || segmentTemplate;
+    const segmentTimeline = segmentTimelineParentNode && findChildren(segmentTimelineParentNode, 'SegmentTimeline')[0];
+    const segmentInitializationParentNode = segmentList || segmentBase || segmentTemplate;
+    const segmentInitialization = segmentInitializationParentNode && findChildren(segmentInitializationParentNode, 'Initialization')[0]; // SegmentTemplate is handled slightly differently, since it can have both
+    // @initialization and an <Initialization> node.  @initialization can be templated,
+    // while the node can have a url and range specified.  If the <SegmentTemplate> has
+    // both @initialization and an <Initialization> subelement we opt to override with
+    // the node, as this interaction is not defined in the spec.
+
+    const template = segmentTemplate && parseAttributes(segmentTemplate);
+    if (template && segmentInitialization) {
+      template.initialization = segmentInitialization && parseAttributes(segmentInitialization);
+    } else if (template && template.initialization) {
+      // If it is @initialization we convert it to an object since this is the format that
+      // later functions will rely on for the initialization segment.  This is only valid
+      // for <SegmentTemplate>
+      template.initialization = {
+        sourceURL: template.initialization
+      };
+    }
+    const segmentInfo = {
+      template,
+      segmentTimeline: segmentTimeline && findChildren(segmentTimeline, 'S').map(s => parseAttributes(s)),
+      list: segmentList && merge$1(parseAttributes(segmentList), {
+        segmentUrls,
+        initialization: parseAttributes(segmentInitialization)
+      }),
+      base: segmentBase && merge$1(parseAttributes(segmentBase), {
+        initialization: parseAttributes(segmentInitialization)
+      })
+    };
+    Object.keys(segmentInfo).forEach(key => {
+      if (!segmentInfo[key]) {
+        delete segmentInfo[key];
+      }
+    });
+    return segmentInfo;
+  };
+  /**
+   * Contains Segment information and attributes needed to construct a Playlist object
+   * from a Representation
+   *
+   * @typedef {Object} RepresentationInformation
+   * @property {SegmentInformation} segmentInfo
+   *           Segment information for this Representation
+   * @property {Object} attributes
+   *           Inherited attributes for this Representation
+   */
+
+  /**
+   * Maps a Representation node to an object containing Segment information and attributes
+   *
+   * @name inheritBaseUrlsCallback
+   * @function
+   * @param {Node} representation
+   *        Representation node from the mpd
+   * @return {RepresentationInformation}
+   *         Representation information needed to construct a Playlist object
+   */
+
+  /**
+   * Returns a callback for Array.prototype.map for mapping Representation nodes to
+   * Segment information and attributes using inherited BaseURL nodes.
+   *
+   * @param {Object} adaptationSetAttributes
+   *        Contains attributes inherited by the AdaptationSet
+   * @param {Object[]} adaptationSetBaseUrls
+   *        List of objects containing resolved base URLs and attributes
+   *        inherited by the AdaptationSet
+   * @param {SegmentInformation} adaptationSetSegmentInfo
+   *        Contains Segment information for the AdaptationSet
+   * @return {inheritBaseUrlsCallback}
+   *         Callback map function
+   */
+
+  const inheritBaseUrls = (adaptationSetAttributes, adaptationSetBaseUrls, adaptationSetSegmentInfo) => representation => {
+    const repBaseUrlElements = findChildren(representation, 'BaseURL');
+    const repBaseUrls = buildBaseUrls(adaptationSetBaseUrls, repBaseUrlElements);
+    const attributes = merge$1(adaptationSetAttributes, parseAttributes(representation));
+    const representationSegmentInfo = getSegmentInformation(representation);
+    return repBaseUrls.map(baseUrl => {
+      return {
+        segmentInfo: merge$1(adaptationSetSegmentInfo, representationSegmentInfo),
+        attributes: merge$1(attributes, baseUrl)
+      };
+    });
+  };
+  /**
+   * Tranforms a series of content protection nodes to
+   * an object containing pssh data by key system
+   *
+   * @param {Node[]} contentProtectionNodes
+   *        Content protection nodes
+   * @return {Object}
+   *        Object containing pssh data by key system
+   */
+
+  const generateKeySystemInformation = contentProtectionNodes => {
+    return contentProtectionNodes.reduce((acc, node) => {
+      const attributes = parseAttributes(node); // Although it could be argued that according to the UUID RFC spec the UUID string (a-f chars) should be generated
+      // as a lowercase string it also mentions it should be treated as case-insensitive on input. Since the key system
+      // UUIDs in the keySystemsMap are hardcoded as lowercase in the codebase there isn't any reason not to do
+      // .toLowerCase() on the input UUID string from the manifest (at least I could not think of one).
+
+      if (attributes.schemeIdUri) {
+        attributes.schemeIdUri = attributes.schemeIdUri.toLowerCase();
+      }
+      const keySystem = keySystemsMap[attributes.schemeIdUri];
+      if (keySystem) {
+        acc[keySystem] = {
+          attributes
+        };
+        const psshNode = findChildren(node, 'cenc:pssh')[0];
+        if (psshNode) {
+          const pssh = getContent(psshNode);
+          acc[keySystem].pssh = pssh && decodeB64ToUint8Array(pssh);
+        }
+      }
+      return acc;
+    }, {});
+  }; // defined in ANSI_SCTE 214-1 2016
+
+  const parseCaptionServiceMetadata = service => {
+    // 608 captions
+    if (service.schemeIdUri === 'urn:scte:dash:cc:cea-608:2015') {
+      const values = typeof service.value !== 'string' ? [] : service.value.split(';');
+      return values.map(value => {
+        let channel;
+        let language; // default language to value
+
+        language = value;
+        if (/^CC\d=/.test(value)) {
+          [channel, language] = value.split('=');
+        } else if (/^CC\d$/.test(value)) {
+          channel = value;
+        }
+        return {
+          channel,
+          language
+        };
+      });
+    } else if (service.schemeIdUri === 'urn:scte:dash:cc:cea-708:2015') {
+      const values = typeof service.value !== 'string' ? [] : service.value.split(';');
+      return values.map(value => {
+        const flags = {
+          // service or channel number 1-63
+          'channel': undefined,
+          // language is a 3ALPHA per ISO 639.2/B
+          // field is required
+          'language': undefined,
+          // BIT 1/0 or ?
+          // default value is 1, meaning 16:9 aspect ratio, 0 is 4:3, ? is unknown
+          'aspectRatio': 1,
+          // BIT 1/0
+          // easy reader flag indicated the text is tailed to the needs of beginning readers
+          // default 0, or off
+          'easyReader': 0,
+          // BIT 1/0
+          // If 3d metadata is present (CEA-708.1) then 1
+          // default 0
+          '3D': 0
+        };
+        if (/=/.test(value)) {
+          const [channel, opts = ''] = value.split('=');
+          flags.channel = channel;
+          flags.language = value;
+          opts.split(',').forEach(opt => {
+            const [name, val] = opt.split(':');
+            if (name === 'lang') {
+              flags.language = val; // er for easyReadery
+            } else if (name === 'er') {
+              flags.easyReader = Number(val); // war for wide aspect ratio
+            } else if (name === 'war') {
+              flags.aspectRatio = Number(val);
+            } else if (name === '3D') {
+              flags['3D'] = Number(val);
+            }
+          });
+        } else {
+          flags.language = value;
+        }
+        if (flags.channel) {
+          flags.channel = 'SERVICE' + flags.channel;
+        }
+        return flags;
+      });
+    }
+  };
+  /**
+   * A map callback that will parse all event stream data for a collection of periods
+   * DASH ISO_IEC_23009 5.10.2.2
+   * https://dashif-documents.azurewebsites.net/Events/master/event.html#mpd-event-timing
+   *
+   * @param {PeriodInformation} period object containing necessary period information
+   * @return a collection of parsed eventstream event objects
+   */
+
+  const toEventStream = period => {
+    // get and flatten all EventStreams tags and parse attributes and children
+    return flatten(findChildren(period.node, 'EventStream').map(eventStream => {
+      const eventStreamAttributes = parseAttributes(eventStream);
+      const schemeIdUri = eventStreamAttributes.schemeIdUri; // find all Events per EventStream tag and map to return objects
+
+      return findChildren(eventStream, 'Event').map(event => {
+        const eventAttributes = parseAttributes(event);
+        const presentationTime = eventAttributes.presentationTime || 0;
+        const timescale = eventStreamAttributes.timescale || 1;
+        const duration = eventAttributes.duration || 0;
+        const start = presentationTime / timescale + period.attributes.start;
+        return {
+          schemeIdUri,
+          value: eventStreamAttributes.value,
+          id: eventAttributes.id,
+          start,
+          end: start + duration / timescale,
+          messageData: getContent(event) || eventAttributes.messageData,
+          contentEncoding: eventStreamAttributes.contentEncoding,
+          presentationTimeOffset: eventStreamAttributes.presentationTimeOffset || 0
+        };
+      });
+    }));
+  };
+  /**
+   * Maps an AdaptationSet node to a list of Representation information objects
+   *
+   * @name toRepresentationsCallback
+   * @function
+   * @param {Node} adaptationSet
+   *        AdaptationSet node from the mpd
+   * @return {RepresentationInformation[]}
+   *         List of objects containing Representaion information
+   */
+
+  /**
+   * Returns a callback for Array.prototype.map for mapping AdaptationSet nodes to a list of
+   * Representation information objects
+   *
+   * @param {Object} periodAttributes
+   *        Contains attributes inherited by the Period
+   * @param {Object[]} periodBaseUrls
+   *        Contains list of objects with resolved base urls and attributes
+   *        inherited by the Period
+   * @param {string[]} periodSegmentInfo
+   *        Contains Segment Information at the period level
+   * @return {toRepresentationsCallback}
+   *         Callback map function
+   */
+
+  const toRepresentations = (periodAttributes, periodBaseUrls, periodSegmentInfo) => adaptationSet => {
+    const adaptationSetAttributes = parseAttributes(adaptationSet);
+    const adaptationSetBaseUrls = buildBaseUrls(periodBaseUrls, findChildren(adaptationSet, 'BaseURL'));
+    const role = findChildren(adaptationSet, 'Role')[0];
+    const roleAttributes = {
+      role: parseAttributes(role)
+    };
+    let attrs = merge$1(periodAttributes, adaptationSetAttributes, roleAttributes);
+    const accessibility = findChildren(adaptationSet, 'Accessibility')[0];
+    const captionServices = parseCaptionServiceMetadata(parseAttributes(accessibility));
+    if (captionServices) {
+      attrs = merge$1(attrs, {
+        captionServices
+      });
+    }
+    const label = findChildren(adaptationSet, 'Label')[0];
+    if (label && label.childNodes.length) {
+      const labelVal = label.childNodes[0].nodeValue.trim();
+      attrs = merge$1(attrs, {
+        label: labelVal
+      });
+    }
+    const contentProtection = generateKeySystemInformation(findChildren(adaptationSet, 'ContentProtection'));
+    if (Object.keys(contentProtection).length) {
+      attrs = merge$1(attrs, {
+        contentProtection
+      });
+    }
+    const segmentInfo = getSegmentInformation(adaptationSet);
+    const representations = findChildren(adaptationSet, 'Representation');
+    const adaptationSetSegmentInfo = merge$1(periodSegmentInfo, segmentInfo);
+    return flatten(representations.map(inheritBaseUrls(attrs, adaptationSetBaseUrls, adaptationSetSegmentInfo)));
+  };
+  /**
+   * Contains all period information for mapping nodes onto adaptation sets.
+   *
+   * @typedef {Object} PeriodInformation
+   * @property {Node} period.node
+   *           Period node from the mpd
+   * @property {Object} period.attributes
+   *           Parsed period attributes from node plus any added
+   */
+
+  /**
+   * Maps a PeriodInformation object to a list of Representation information objects for all
+   * AdaptationSet nodes contained within the Period.
+   *
+   * @name toAdaptationSetsCallback
+   * @function
+   * @param {PeriodInformation} period
+   *        Period object containing necessary period information
+   * @param {number} periodStart
+   *        Start time of the Period within the mpd
+   * @return {RepresentationInformation[]}
+   *         List of objects containing Representaion information
+   */
+
+  /**
+   * Returns a callback for Array.prototype.map for mapping Period nodes to a list of
+   * Representation information objects
+   *
+   * @param {Object} mpdAttributes
+   *        Contains attributes inherited by the mpd
+    * @param {Object[]} mpdBaseUrls
+   *        Contains list of objects with resolved base urls and attributes
+   *        inherited by the mpd
+   * @return {toAdaptationSetsCallback}
+   *         Callback map function
+   */
+
+  const toAdaptationSets = (mpdAttributes, mpdBaseUrls) => (period, index) => {
+    const periodBaseUrls = buildBaseUrls(mpdBaseUrls, findChildren(period.node, 'BaseURL'));
+    const periodAttributes = merge$1(mpdAttributes, {
+      periodStart: period.attributes.start
+    });
+    if (typeof period.attributes.duration === 'number') {
+      periodAttributes.periodDuration = period.attributes.duration;
+    }
+    const adaptationSets = findChildren(period.node, 'AdaptationSet');
+    const periodSegmentInfo = getSegmentInformation(period.node);
+    return flatten(adaptationSets.map(toRepresentations(periodAttributes, periodBaseUrls, periodSegmentInfo)));
+  };
+  /**
+   * Tranforms an array of content steering nodes into an object
+   * containing CDN content steering information from the MPD manifest.
+   *
+   * For more information on the DASH spec for Content Steering parsing, see:
+   * https://dashif.org/docs/DASH-IF-CTS-00XX-Content-Steering-Community-Review.pdf
+   *
+   * @param {Node[]} contentSteeringNodes
+   *        Content steering nodes
+   * @param {Function} eventHandler
+   *        The event handler passed into the parser options to handle warnings
+   * @return {Object}
+   *        Object containing content steering data
+   */
+
+  const generateContentSteeringInformation = (contentSteeringNodes, eventHandler) => {
+    // If there are more than one ContentSteering tags, throw an error
+    if (contentSteeringNodes.length > 1) {
+      eventHandler({
+        type: 'warn',
+        message: 'The MPD manifest should contain no more than one ContentSteering tag'
+      });
+    } // Return a null value if there are no ContentSteering tags
+
+    if (!contentSteeringNodes.length) {
+      return null;
+    }
+    const infoFromContentSteeringTag = merge$1({
+      serverURL: getContent(contentSteeringNodes[0])
+    }, parseAttributes(contentSteeringNodes[0])); // Converts `queryBeforeStart` to a boolean, as well as setting the default value
+    // to `false` if it doesn't exist
+
+    infoFromContentSteeringTag.queryBeforeStart = infoFromContentSteeringTag.queryBeforeStart === 'true';
+    return infoFromContentSteeringTag;
+  };
+  /**
+   * Gets Period@start property for a given period.
+   *
+   * @param {Object} options
+   *        Options object
+   * @param {Object} options.attributes
+   *        Period attributes
+   * @param {Object} [options.priorPeriodAttributes]
+   *        Prior period attributes (if prior period is available)
+   * @param {string} options.mpdType
+   *        The MPD@type these periods came from
+   * @return {number|null}
+   *         The period start, or null if it's an early available period or error
+   */
+
+  const getPeriodStart = ({
+    attributes,
+    priorPeriodAttributes,
+    mpdType
+  }) => {
+    // Summary of period start time calculation from DASH spec section 5.3.2.1
+    //
+    // A period's start is the first period's start + time elapsed after playing all
+    // prior periods to this one. Periods continue one after the other in time (without
+    // gaps) until the end of the presentation.
+    //
+    // The value of Period@start should be:
+    // 1. if Period@start is present: value of Period@start
+    // 2. if previous period exists and it has @duration: previous Period@start +
+    //    previous Period@duration
+    // 3. if this is first period and MPD@type is 'static': 0
+    // 4. in all other cases, consider the period an "early available period" (note: not
+    //    currently supported)
+    // (1)
+    if (typeof attributes.start === 'number') {
+      return attributes.start;
+    } // (2)
+
+    if (priorPeriodAttributes && typeof priorPeriodAttributes.start === 'number' && typeof priorPeriodAttributes.duration === 'number') {
+      return priorPeriodAttributes.start + priorPeriodAttributes.duration;
+    } // (3)
+
+    if (!priorPeriodAttributes && mpdType === 'static') {
+      return 0;
+    } // (4)
+    // There is currently no logic for calculating the Period@start value if there is
+    // no Period@start or prior Period@start and Period@duration available. This is not made
+    // explicit by the DASH interop guidelines or the DASH spec, however, since there's
+    // nothing about any other resolution strategies, it's implied. Thus, this case should
+    // be considered an early available period, or error, and null should suffice for both
+    // of those cases.
+
+    return null;
+  };
+  /**
+   * Traverses the mpd xml tree to generate a list of Representation information objects
+   * that have inherited attributes from parent nodes
+   *
+   * @param {Node} mpd
+   *        The root node of the mpd
+   * @param {Object} options
+   *        Available options for inheritAttributes
+   * @param {string} options.manifestUri
+   *        The uri source of the mpd
+   * @param {number} options.NOW
+   *        Current time per DASH IOP.  Default is current time in ms since epoch
+   * @param {number} options.clientOffset
+   *        Client time difference from NOW (in milliseconds)
+   * @return {RepresentationInformation[]}
+   *         List of objects containing Representation information
+   */
+
+  const inheritAttributes = (mpd, options = {}) => {
+    const {
+      manifestUri = '',
+      NOW = Date.now(),
+      clientOffset = 0,
+      // TODO: For now, we are expecting an eventHandler callback function
+      // to be passed into the mpd parser as an option.
+      // In the future, we should enable stream parsing by using the Stream class from vhs-utils.
+      // This will support new features including a standardized event handler.
+      // See the m3u8 parser for examples of how stream parsing is currently used for HLS parsing.
+      // https://github.com/videojs/vhs-utils/blob/88d6e10c631e57a5af02c5a62bc7376cd456b4f5/src/stream.js#L9
+      eventHandler = function () {}
+    } = options;
+    const periodNodes = findChildren(mpd, 'Period');
+    if (!periodNodes.length) {
+      throw new Error(errors.INVALID_NUMBER_OF_PERIOD);
+    }
+    const locations = findChildren(mpd, 'Location');
+    const mpdAttributes = parseAttributes(mpd);
+    const mpdBaseUrls = buildBaseUrls([{
+      baseUrl: manifestUri
+    }], findChildren(mpd, 'BaseURL'));
+    const contentSteeringNodes = findChildren(mpd, 'ContentSteering'); // See DASH spec section 5.3.1.2, Semantics of MPD element. Default type to 'static'.
+
+    mpdAttributes.type = mpdAttributes.type || 'static';
+    mpdAttributes.sourceDuration = mpdAttributes.mediaPresentationDuration || 0;
+    mpdAttributes.NOW = NOW;
+    mpdAttributes.clientOffset = clientOffset;
+    if (locations.length) {
+      mpdAttributes.locations = locations.map(getContent);
+    }
+    const periods = []; // Since toAdaptationSets acts on individual periods right now, the simplest approach to
+    // adding properties that require looking at prior periods is to parse attributes and add
+    // missing ones before toAdaptationSets is called. If more such properties are added, it
+    // may be better to refactor toAdaptationSets.
+
+    periodNodes.forEach((node, index) => {
+      const attributes = parseAttributes(node); // Use the last modified prior period, as it may contain added information necessary
+      // for this period.
+
+      const priorPeriod = periods[index - 1];
+      attributes.start = getPeriodStart({
+        attributes,
+        priorPeriodAttributes: priorPeriod ? priorPeriod.attributes : null,
+        mpdType: mpdAttributes.type
+      });
+      periods.push({
+        node,
+        attributes
+      });
+    });
+    return {
+      locations: mpdAttributes.locations,
+      contentSteeringInfo: generateContentSteeringInformation(contentSteeringNodes, eventHandler),
+      // TODO: There are occurences where this `representationInfo` array contains undesired
+      // duplicates. This generally occurs when there are multiple BaseURL nodes that are
+      // direct children of the MPD node. When we attempt to resolve URLs from a combination of the
+      // parent BaseURL and a child BaseURL, and the value does not resolve,
+      // we end up returning the child BaseURL multiple times.
+      // We need to determine a way to remove these duplicates in a safe way.
+      // See: https://github.com/videojs/mpd-parser/pull/17#discussion_r162750527
+      representationInfo: flatten(periods.map(toAdaptationSets(mpdAttributes, mpdBaseUrls))),
+      eventStream: flatten(periods.map(toEventStream))
+    };
+  };
+  const stringToMpdXml = manifestString => {
+    if (manifestString === '') {
+      throw new Error(errors.DASH_EMPTY_MANIFEST);
+    }
+    const parser = new DOMParser();
+    let xml;
+    let mpd;
+    try {
+      xml = parser.parseFromString(manifestString, 'application/xml');
+      mpd = xml && xml.documentElement.tagName === 'MPD' ? xml.documentElement : null;
+    } catch (e) {// ie 11 throws on invalid xml
+    }
+    if (!mpd || mpd && mpd.getElementsByTagName('parsererror').length > 0) {
+      throw new Error(errors.DASH_INVALID_XML);
+    }
+    return mpd;
+  };
+
+  /**
+   * Parses the manifest for a UTCTiming node, returning the nodes attributes if found
+   *
+   * @param {string} mpd
+   *        XML string of the MPD manifest
+   * @return {Object|null}
+   *         Attributes of UTCTiming node specified in the manifest. Null if none found
+   */
+
+  const parseUTCTimingScheme = mpd => {
+    const UTCTimingNode = findChildren(mpd, 'UTCTiming')[0];
+    if (!UTCTimingNode) {
+      return null;
+    }
+    const attributes = parseAttributes(UTCTimingNode);
+    switch (attributes.schemeIdUri) {
+      case 'urn:mpeg:dash:utc:http-head:2014':
+      case 'urn:mpeg:dash:utc:http-head:2012':
+        attributes.method = 'HEAD';
+        break;
+      case 'urn:mpeg:dash:utc:http-xsdate:2014':
+      case 'urn:mpeg:dash:utc:http-iso:2014':
+      case 'urn:mpeg:dash:utc:http-xsdate:2012':
+      case 'urn:mpeg:dash:utc:http-iso:2012':
+        attributes.method = 'GET';
+        break;
+      case 'urn:mpeg:dash:utc:direct:2014':
+      case 'urn:mpeg:dash:utc:direct:2012':
+        attributes.method = 'DIRECT';
+        attributes.value = Date.parse(attributes.value);
+        break;
+      case 'urn:mpeg:dash:utc:http-ntp:2014':
+      case 'urn:mpeg:dash:utc:ntp:2014':
+      case 'urn:mpeg:dash:utc:sntp:2014':
+      default:
+        throw new Error(errors.UNSUPPORTED_UTC_TIMING_SCHEME);
+    }
+    return attributes;
+  };
+  /*
+   * Given a DASH manifest string and options, parses the DASH manifest into an object in the
+   * form outputed by m3u8-parser and accepted by videojs/http-streaming.
+   *
+   * For live DASH manifests, if `previousManifest` is provided in options, then the newly
+   * parsed DASH manifest will have its media sequence and discontinuity sequence values
+   * updated to reflect its position relative to the prior manifest.
+   *
+   * @param {string} manifestString - the DASH manifest as a string
+   * @param {options} [options] - any options
+   *
+   * @return {Object} the manifest object
+   */
+
+  const parse = (manifestString, options = {}) => {
+    const parsedManifestInfo = inheritAttributes(stringToMpdXml(manifestString), options);
+    const playlists = toPlaylists(parsedManifestInfo.representationInfo);
+    return toM3u8({
+      dashPlaylists: playlists,
+      locations: parsedManifestInfo.locations,
+      contentSteering: parsedManifestInfo.contentSteeringInfo,
+      sidxMapping: options.sidxMapping,
+      previousManifest: options.previousManifest,
+      eventStream: parsedManifestInfo.eventStream
+    });
+  };
+  /**
+   * Parses the manifest for a UTCTiming node, returning the nodes attributes if found
+   *
+   * @param {string} manifestString
+   *        XML string of the MPD manifest
+   * @return {Object|null}
+   *         Attributes of UTCTiming node specified in the manifest. Null if none found
+   */
+
+  const parseUTCTiming = manifestString => parseUTCTimingScheme(stringToMpdXml(manifestString));
+
+  var MAX_UINT32 = Math.pow(2, 32);
+  var getUint64$1 = function (uint8) {
+    var dv = new DataView(uint8.buffer, uint8.byteOffset, uint8.byteLength);
+    var value;
+    if (dv.getBigUint64) {
+      value = dv.getBigUint64(0);
+      if (value < Number.MAX_SAFE_INTEGER) {
+        return Number(value);
+      }
+      return value;
+    }
+    return dv.getUint32(0) * MAX_UINT32 + dv.getUint32(4);
+  };
+  var numbers = {
+    getUint64: getUint64$1,
+    MAX_UINT32: MAX_UINT32
+  };
+
+  var getUint64 = numbers.getUint64;
+  var parseSidx = function (data) {
+    var view = new DataView(data.buffer, data.byteOffset, data.byteLength),
+      result = {
+        version: data[0],
+        flags: new Uint8Array(data.subarray(1, 4)),
+        references: [],
+        referenceId: view.getUint32(4),
+        timescale: view.getUint32(8)
+      },
+      i = 12;
+    if (result.version === 0) {
+      result.earliestPresentationTime = view.getUint32(i);
+      result.firstOffset = view.getUint32(i + 4);
+      i += 8;
+    } else {
+      // read 64 bits
+      result.earliestPresentationTime = getUint64(data.subarray(i));
+      result.firstOffset = getUint64(data.subarray(i + 8));
+      i += 16;
+    }
+    i += 2; // reserved
+
+    var referenceCount = view.getUint16(i);
+    i += 2; // start of references
+
+    for (; referenceCount > 0; i += 12, referenceCount--) {
+      result.references.push({
+        referenceType: (data[i] & 0x80) >>> 7,
+        referencedSize: view.getUint32(i) & 0x7FFFFFFF,
+        subsegmentDuration: view.getUint32(i + 4),
+        startsWithSap: !!(data[i + 8] & 0x80),
+        sapType: (data[i + 8] & 0x70) >>> 4,
+        sapDeltaTime: view.getUint32(i + 8) & 0x0FFFFFFF
+      });
+    }
+    return result;
+  };
+  var parseSidx_1 = parseSidx;
+
+  var ID3 = toUint8([0x49, 0x44, 0x33]);
+  var getId3Size = function getId3Size(bytes, offset) {
+    if (offset === void 0) {
+      offset = 0;
+    }
+    bytes = toUint8(bytes);
+    var flags = bytes[offset + 5];
+    var returnSize = bytes[offset + 6] << 21 | bytes[offset + 7] << 14 | bytes[offset + 8] << 7 | bytes[offset + 9];
+    var footerPresent = (flags & 16) >> 4;
+    if (footerPresent) {
+      return returnSize + 20;
+    }
+    return returnSize + 10;
+  };
+  var getId3Offset = function getId3Offset(bytes, offset) {
+    if (offset === void 0) {
+      offset = 0;
+    }
+    bytes = toUint8(bytes);
+    if (bytes.length - offset < 10 || !bytesMatch(bytes, ID3, {
+      offset: offset
+    })) {
+      return offset;
+    }
+    offset += getId3Size(bytes, offset); // recursive check for id3 tags as some files
+    // have multiple ID3 tag sections even though
+    // they should not.
+
+    return getId3Offset(bytes, offset);
+  };
+
+  var normalizePath$1 = function normalizePath(path) {
+    if (typeof path === 'string') {
+      return stringToBytes(path);
+    }
+    if (typeof path === 'number') {
+      return path;
+    }
+    return path;
+  };
+  var normalizePaths$1 = function normalizePaths(paths) {
+    if (!Array.isArray(paths)) {
+      return [normalizePath$1(paths)];
+    }
+    return paths.map(function (p) {
+      return normalizePath$1(p);
+    });
+  };
+  /**
+   * find any number of boxes by name given a path to it in an iso bmff
+   * such as mp4.
+   *
+   * @param {TypedArray} bytes
+   *        bytes for the iso bmff to search for boxes in
+   *
+   * @param {Uint8Array[]|string[]|string|Uint8Array} name
+   *        An array of paths or a single path representing the name
+   *        of boxes to search through in bytes. Paths may be
+   *        uint8 (character codes) or strings.
+   *
+   * @param {boolean} [complete=false]
+   *        Should we search only for complete boxes on the final path.
+   *        This is very useful when you do not want to get back partial boxes
+   *        in the case of streaming files.
+   *
+   * @return {Uint8Array[]}
+   *         An array of the end paths that we found.
+   */
+
+  var findBox = function findBox(bytes, paths, complete) {
+    if (complete === void 0) {
+      complete = false;
+    }
+    paths = normalizePaths$1(paths);
+    bytes = toUint8(bytes);
+    var results = [];
+    if (!paths.length) {
+      // short-circuit the search for empty paths
+      return results;
+    }
+    var i = 0;
+    while (i < bytes.length) {
+      var size = (bytes[i] << 24 | bytes[i + 1] << 16 | bytes[i + 2] << 8 | bytes[i + 3]) >>> 0;
+      var type = bytes.subarray(i + 4, i + 8); // invalid box format.
+
+      if (size === 0) {
+        break;
+      }
+      var end = i + size;
+      if (end > bytes.length) {
+        // this box is bigger than the number of bytes we have
+        // and complete is set, we cannot find any more boxes.
+        if (complete) {
+          break;
+        }
+        end = bytes.length;
+      }
+      var data = bytes.subarray(i + 8, end);
+      if (bytesMatch(type, paths[0])) {
+        if (paths.length === 1) {
+          // this is the end of the path and we've found the box we were
+          // looking for
+          results.push(data);
+        } else {
+          // recursively search for the next box along the path
+          results.push.apply(results, findBox(data, paths.slice(1), complete));
+        }
+      }
+      i = end;
+    } // we've finished searching all of bytes
+
+    return results;
+  };
+
+  // https://matroska-org.github.io/libebml/specs.html
+  // https://www.matroska.org/technical/elements.html
+  // https://www.webmproject.org/docs/container/
+
+  var EBML_TAGS = {
+    EBML: toUint8([0x1A, 0x45, 0xDF, 0xA3]),
+    DocType: toUint8([0x42, 0x82]),
+    Segment: toUint8([0x18, 0x53, 0x80, 0x67]),
+    SegmentInfo: toUint8([0x15, 0x49, 0xA9, 0x66]),
+    Tracks: toUint8([0x16, 0x54, 0xAE, 0x6B]),
+    Track: toUint8([0xAE]),
+    TrackNumber: toUint8([0xd7]),
+    DefaultDuration: toUint8([0x23, 0xe3, 0x83]),
+    TrackEntry: toUint8([0xAE]),
+    TrackType: toUint8([0x83]),
+    FlagDefault: toUint8([0x88]),
+    CodecID: toUint8([0x86]),
+    CodecPrivate: toUint8([0x63, 0xA2]),
+    VideoTrack: toUint8([0xe0]),
+    AudioTrack: toUint8([0xe1]),
+    // Not used yet, but will be used for live webm/mkv
+    // see https://www.matroska.org/technical/basics.html#block-structure
+    // see https://www.matroska.org/technical/basics.html#simpleblock-structure
+    Cluster: toUint8([0x1F, 0x43, 0xB6, 0x75]),
+    Timestamp: toUint8([0xE7]),
+    TimestampScale: toUint8([0x2A, 0xD7, 0xB1]),
+    BlockGroup: toUint8([0xA0]),
+    BlockDuration: toUint8([0x9B]),
+    Block: toUint8([0xA1]),
+    SimpleBlock: toUint8([0xA3])
+  };
+  /**
+   * This is a simple table to determine the length
+   * of things in ebml. The length is one based (starts at 1,
+   * rather than zero) and for every zero bit before a one bit
+   * we add one to length. We also need this table because in some
+   * case we have to xor all the length bits from another value.
+   */
+
+  var LENGTH_TABLE = [128, 64, 32, 16, 8, 4, 2, 1];
+  var getLength = function getLength(byte) {
+    var len = 1;
+    for (var i = 0; i < LENGTH_TABLE.length; i++) {
+      if (byte & LENGTH_TABLE[i]) {
+        break;
+      }
+      len++;
+    }
+    return len;
+  }; // length in ebml is stored in the first 4 to 8 bits
+  // of the first byte. 4 for the id length and 8 for the
+  // data size length. Length is measured by converting the number to binary
+  // then 1 + the number of zeros before a 1 is encountered starting
+  // from the left.
+
+  var getvint = function getvint(bytes, offset, removeLength, signed) {
+    if (removeLength === void 0) {
+      removeLength = true;
+    }
+    if (signed === void 0) {
+      signed = false;
+    }
+    var length = getLength(bytes[offset]);
+    var valueBytes = bytes.subarray(offset, offset + length); // NOTE that we do **not** subarray here because we need to copy these bytes
+    // as they will be modified below to remove the dataSizeLen bits and we do not
+    // want to modify the original data. normally we could just call slice on
+    // uint8array but ie 11 does not support that...
+
+    if (removeLength) {
+      valueBytes = Array.prototype.slice.call(bytes, offset, offset + length);
+      valueBytes[0] ^= LENGTH_TABLE[length - 1];
+    }
+    return {
+      length: length,
+      value: bytesToNumber(valueBytes, {
+        signed: signed
+      }),
+      bytes: valueBytes
+    };
+  };
+  var normalizePath = function normalizePath(path) {
+    if (typeof path === 'string') {
+      return path.match(/.{1,2}/g).map(function (p) {
+        return normalizePath(p);
+      });
+    }
+    if (typeof path === 'number') {
+      return numberToBytes(path);
+    }
+    return path;
+  };
+  var normalizePaths = function normalizePaths(paths) {
+    if (!Array.isArray(paths)) {
+      return [normalizePath(paths)];
+    }
+    return paths.map(function (p) {
+      return normalizePath(p);
+    });
+  };
+  var getInfinityDataSize = function getInfinityDataSize(id, bytes, offset) {
+    if (offset >= bytes.length) {
+      return bytes.length;
+    }
+    var innerid = getvint(bytes, offset, false);
+    if (bytesMatch(id.bytes, innerid.bytes)) {
+      return offset;
+    }
+    var dataHeader = getvint(bytes, offset + innerid.length);
+    return getInfinityDataSize(id, bytes, offset + dataHeader.length + dataHeader.value + innerid.length);
+  };
+  /**
+   * Notes on the EBLM format.
+   *
+   * EBLM uses "vints" tags. Every vint tag contains
+   * two parts
+   *
+   * 1. The length from the first byte. You get this by
+   *    converting the byte to binary and counting the zeros
+   *    before a 1. Then you add 1 to that. Examples
+   *    00011111 = length 4 because there are 3 zeros before a 1.
+   *    00100000 = length 3 because there are 2 zeros before a 1.
+   *    00000011 = length 7 because there are 6 zeros before a 1.
+   *
+   * 2. The bits used for length are removed from the first byte
+   *    Then all the bytes are merged into a value. NOTE: this
+   *    is not the case for id ebml tags as there id includes
+   *    length bits.
+   *
+   */
+
+  var findEbml = function findEbml(bytes, paths) {
+    paths = normalizePaths(paths);
+    bytes = toUint8(bytes);
+    var results = [];
+    if (!paths.length) {
+      return results;
+    }
+    var i = 0;
+    while (i < bytes.length) {
+      var id = getvint(bytes, i, false);
+      var dataHeader = getvint(bytes, i + id.length);
+      var dataStart = i + id.length + dataHeader.length; // dataSize is unknown or this is a live stream
+
+      if (dataHeader.value === 0x7f) {
+        dataHeader.value = getInfinityDataSize(id, bytes, dataStart);
+        if (dataHeader.value !== bytes.length) {
+          dataHeader.value -= dataStart;
+        }
+      }
+      var dataEnd = dataStart + dataHeader.value > bytes.length ? bytes.length : dataStart + dataHeader.value;
+      var data = bytes.subarray(dataStart, dataEnd);
+      if (bytesMatch(paths[0], id.bytes)) {
+        if (paths.length === 1) {
+          // this is the end of the paths and we've found the tag we were
+          // looking for
+          results.push(data);
+        } else {
+          // recursively search for the next tag inside of the data
+          // of this one
+          results = results.concat(findEbml(data, paths.slice(1)));
+        }
+      }
+      var totalLength = id.length + dataHeader.length + data.length; // move past this tag entirely, we are not looking for it
+
+      i += totalLength;
+    }
+    return results;
+  }; // see https://www.matroska.org/technical/basics.html#block-structure
+
+  var NAL_TYPE_ONE = toUint8([0x00, 0x00, 0x00, 0x01]);
+  var NAL_TYPE_TWO = toUint8([0x00, 0x00, 0x01]);
+  var EMULATION_PREVENTION = toUint8([0x00, 0x00, 0x03]);
+  /**
+   * Expunge any "Emulation Prevention" bytes from a "Raw Byte
+   * Sequence Payload"
+   *
+   * @param data {Uint8Array} the bytes of a RBSP from a NAL
+   * unit
+   * @return {Uint8Array} the RBSP without any Emulation
+   * Prevention Bytes
+   */
+
+  var discardEmulationPreventionBytes = function discardEmulationPreventionBytes(bytes) {
+    var positions = [];
+    var i = 1; // Find all `Emulation Prevention Bytes`
+
+    while (i < bytes.length - 2) {
+      if (bytesMatch(bytes.subarray(i, i + 3), EMULATION_PREVENTION)) {
+        positions.push(i + 2);
+        i++;
+      }
+      i++;
+    } // If no Emulation Prevention Bytes were found just return the original
+    // array
+
+    if (positions.length === 0) {
+      return bytes;
+    } // Create a new array to hold the NAL unit data
+
+    var newLength = bytes.length - positions.length;
+    var newData = new Uint8Array(newLength);
+    var sourceIndex = 0;
+    for (i = 0; i < newLength; sourceIndex++, i++) {
+      if (sourceIndex === positions[0]) {
+        // Skip this byte
+        sourceIndex++; // Remove this position index
+
+        positions.shift();
+      }
+      newData[i] = bytes[sourceIndex];
+    }
+    return newData;
+  };
+  var findNal = function findNal(bytes, dataType, types, nalLimit) {
+    if (nalLimit === void 0) {
+      nalLimit = Infinity;
+    }
+    bytes = toUint8(bytes);
+    types = [].concat(types);
+    var i = 0;
+    var nalStart;
+    var nalsFound = 0; // keep searching until:
+    // we reach the end of bytes
+    // we reach the maximum number of nals they want to seach
+    // NOTE: that we disregard nalLimit when we have found the start
+    // of the nal we want so that we can find the end of the nal we want.
+
+    while (i < bytes.length && (nalsFound < nalLimit || nalStart)) {
+      var nalOffset = void 0;
+      if (bytesMatch(bytes.subarray(i), NAL_TYPE_ONE)) {
+        nalOffset = 4;
+      } else if (bytesMatch(bytes.subarray(i), NAL_TYPE_TWO)) {
+        nalOffset = 3;
+      } // we are unsynced,
+      // find the next nal unit
+
+      if (!nalOffset) {
+        i++;
+        continue;
+      }
+      nalsFound++;
+      if (nalStart) {
+        return discardEmulationPreventionBytes(bytes.subarray(nalStart, i));
+      }
+      var nalType = void 0;
+      if (dataType === 'h264') {
+        nalType = bytes[i + nalOffset] & 0x1f;
+      } else if (dataType === 'h265') {
+        nalType = bytes[i + nalOffset] >> 1 & 0x3f;
+      }
+      if (types.indexOf(nalType) !== -1) {
+        nalStart = i + nalOffset;
+      } // nal header is 1 length for h264, and 2 for h265
+
+      i += nalOffset + (dataType === 'h264' ? 1 : 2);
+    }
+    return bytes.subarray(0, 0);
+  };
+  var findH264Nal = function findH264Nal(bytes, type, nalLimit) {
+    return findNal(bytes, 'h264', type, nalLimit);
+  };
+  var findH265Nal = function findH265Nal(bytes, type, nalLimit) {
+    return findNal(bytes, 'h265', type, nalLimit);
+  };
+
+  var CONSTANTS = {
+    // "webm" string literal in hex
+    'webm': toUint8([0x77, 0x65, 0x62, 0x6d]),
+    // "matroska" string literal in hex
+    'matroska': toUint8([0x6d, 0x61, 0x74, 0x72, 0x6f, 0x73, 0x6b, 0x61]),
+    // "fLaC" string literal in hex
+    'flac': toUint8([0x66, 0x4c, 0x61, 0x43]),
+    // "OggS" string literal in hex
+    'ogg': toUint8([0x4f, 0x67, 0x67, 0x53]),
+    // ac-3 sync byte, also works for ec-3 as that is simply a codec
+    // of ac-3
+    'ac3': toUint8([0x0b, 0x77]),
+    // "RIFF" string literal in hex used for wav and avi
+    'riff': toUint8([0x52, 0x49, 0x46, 0x46]),
+    // "AVI" string literal in hex
+    'avi': toUint8([0x41, 0x56, 0x49]),
+    // "WAVE" string literal in hex
+    'wav': toUint8([0x57, 0x41, 0x56, 0x45]),
+    // "ftyp3g" string literal in hex
+    '3gp': toUint8([0x66, 0x74, 0x79, 0x70, 0x33, 0x67]),
+    // "ftyp" string literal in hex
+    'mp4': toUint8([0x66, 0x74, 0x79, 0x70]),
+    // "styp" string literal in hex
+    'fmp4': toUint8([0x73, 0x74, 0x79, 0x70]),
+    // "ftypqt" string literal in hex
+    'mov': toUint8([0x66, 0x74, 0x79, 0x70, 0x71, 0x74]),
+    // moov string literal in hex
+    'moov': toUint8([0x6D, 0x6F, 0x6F, 0x76]),
+    // moof string literal in hex
+    'moof': toUint8([0x6D, 0x6F, 0x6F, 0x66])
+  };
+  var _isLikely = {
+    aac: function aac(bytes) {
+      var offset = getId3Offset(bytes);
+      return bytesMatch(bytes, [0xFF, 0x10], {
+        offset: offset,
+        mask: [0xFF, 0x16]
+      });
+    },
+    mp3: function mp3(bytes) {
+      var offset = getId3Offset(bytes);
+      return bytesMatch(bytes, [0xFF, 0x02], {
+        offset: offset,
+        mask: [0xFF, 0x06]
+      });
+    },
+    webm: function webm(bytes) {
+      var docType = findEbml(bytes, [EBML_TAGS.EBML, EBML_TAGS.DocType])[0]; // check if DocType EBML tag is webm
+
+      return bytesMatch(docType, CONSTANTS.webm);
+    },
+    mkv: function mkv(bytes) {
+      var docType = findEbml(bytes, [EBML_TAGS.EBML, EBML_TAGS.DocType])[0]; // check if DocType EBML tag is matroska
+
+      return bytesMatch(docType, CONSTANTS.matroska);
+    },
+    mp4: function mp4(bytes) {
+      // if this file is another base media file format, it is not mp4
+      if (_isLikely['3gp'](bytes) || _isLikely.mov(bytes)) {
+        return false;
+      } // if this file starts with a ftyp or styp box its mp4
+
+      if (bytesMatch(bytes, CONSTANTS.mp4, {
+        offset: 4
+      }) || bytesMatch(bytes, CONSTANTS.fmp4, {
+        offset: 4
+      })) {
+        return true;
+      } // if this file starts with a moof/moov box its mp4
+
+      if (bytesMatch(bytes, CONSTANTS.moof, {
+        offset: 4
+      }) || bytesMatch(bytes, CONSTANTS.moov, {
+        offset: 4
+      })) {
+        return true;
+      }
+    },
+    mov: function mov(bytes) {
+      return bytesMatch(bytes, CONSTANTS.mov, {
+        offset: 4
+      });
+    },
+    '3gp': function gp(bytes) {
+      return bytesMatch(bytes, CONSTANTS['3gp'], {
+        offset: 4
+      });
+    },
+    ac3: function ac3(bytes) {
+      var offset = getId3Offset(bytes);
+      return bytesMatch(bytes, CONSTANTS.ac3, {
+        offset: offset
+      });
+    },
+    ts: function ts(bytes) {
+      if (bytes.length < 189 && bytes.length >= 1) {
+        return bytes[0] === 0x47;
+      }
+      var i = 0; // check the first 376 bytes for two matching sync bytes
+
+      while (i + 188 < bytes.length && i < 188) {
+        if (bytes[i] === 0x47 && bytes[i + 188] === 0x47) {
+          return true;
+        }
+        i += 1;
+      }
+      return false;
+    },
+    flac: function flac(bytes) {
+      var offset = getId3Offset(bytes);
+      return bytesMatch(bytes, CONSTANTS.flac, {
+        offset: offset
+      });
+    },
+    ogg: function ogg(bytes) {
+      return bytesMatch(bytes, CONSTANTS.ogg);
+    },
+    avi: function avi(bytes) {
+      return bytesMatch(bytes, CONSTANTS.riff) && bytesMatch(bytes, CONSTANTS.avi, {
+        offset: 8
+      });
+    },
+    wav: function wav(bytes) {
+      return bytesMatch(bytes, CONSTANTS.riff) && bytesMatch(bytes, CONSTANTS.wav, {
+        offset: 8
+      });
+    },
+    'h264': function h264(bytes) {
+      // find seq_parameter_set_rbsp
+      return findH264Nal(bytes, 7, 3).length;
+    },
+    'h265': function h265(bytes) {
+      // find video_parameter_set_rbsp or seq_parameter_set_rbsp
+      return findH265Nal(bytes, [32, 33], 3).length;
+    }
+  }; // get all the isLikely functions
+  // but make sure 'ts' is above h264 and h265
+  // but below everything else as it is the least specific
+
+  var isLikelyTypes = Object.keys(_isLikely) // remove ts, h264, h265
+  .filter(function (t) {
+    return t !== 'ts' && t !== 'h264' && t !== 'h265';
+  }) // add it back to the bottom
+  .concat(['ts', 'h264', 'h265']); // make sure we are dealing with uint8 data.
+
+  isLikelyTypes.forEach(function (type) {
+    var isLikelyFn = _isLikely[type];
+    _isLikely[type] = function (bytes) {
+      return isLikelyFn(toUint8(bytes));
+    };
+  }); // export after wrapping
+
+  var isLikely = _isLikely; // A useful list of file signatures can be found here
+  // https://en.wikipedia.org/wiki/List_of_file_signatures
+
+  var detectContainerForBytes = function detectContainerForBytes(bytes) {
+    bytes = toUint8(bytes);
+    for (var i = 0; i < isLikelyTypes.length; i++) {
+      var type = isLikelyTypes[i];
+      if (isLikely[type](bytes)) {
+        return type;
+      }
+    }
+    return '';
+  }; // fmp4 is not a container
+
+  var isLikelyFmp4MediaSegment = function isLikelyFmp4MediaSegment(bytes) {
+    return findBox(bytes, ['moof']).length > 0;
+  };
+
+  /**
+   * mux.js
+   *
+   * Copyright (c) Brightcove
+   * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE
+   */
+  var ONE_SECOND_IN_TS = 90000,
+    // 90kHz clock
+    secondsToVideoTs,
+    secondsToAudioTs,
+    videoTsToSeconds,
+    audioTsToSeconds,
+    audioTsToVideoTs,
+    videoTsToAudioTs,
+    metadataTsToSeconds;
+  secondsToVideoTs = function (seconds) {
+    return seconds * ONE_SECOND_IN_TS;
+  };
+  secondsToAudioTs = function (seconds, sampleRate) {
+    return seconds * sampleRate;
+  };
+  videoTsToSeconds = function (timestamp) {
+    return timestamp / ONE_SECOND_IN_TS;
+  };
+  audioTsToSeconds = function (timestamp, sampleRate) {
+    return timestamp / sampleRate;
+  };
+  audioTsToVideoTs = function (timestamp, sampleRate) {
+    return secondsToVideoTs(audioTsToSeconds(timestamp, sampleRate));
+  };
+  videoTsToAudioTs = function (timestamp, sampleRate) {
+    return secondsToAudioTs(videoTsToSeconds(timestamp), sampleRate);
+  };
+
+  /**
+   * Adjust ID3 tag or caption timing information by the timeline pts values
+   * (if keepOriginalTimestamps is false) and convert to seconds
+   */
+  metadataTsToSeconds = function (timestamp, timelineStartPts, keepOriginalTimestamps) {
+    return videoTsToSeconds(keepOriginalTimestamps ? timestamp : timestamp - timelineStartPts);
+  };
+  var clock = {
+    ONE_SECOND_IN_TS: ONE_SECOND_IN_TS,
+    secondsToVideoTs: secondsToVideoTs,
+    secondsToAudioTs: secondsToAudioTs,
+    videoTsToSeconds: videoTsToSeconds,
+    audioTsToSeconds: audioTsToSeconds,
+    audioTsToVideoTs: audioTsToVideoTs,
+    videoTsToAudioTs: videoTsToAudioTs,
+    metadataTsToSeconds: metadataTsToSeconds
+  };
+  var clock_1 = clock.ONE_SECOND_IN_TS;
+
+  /*! @name @videojs/http-streaming @version 3.12.1 @license Apache-2.0 */
+
+  /**
+   * @file resolve-url.js - Handling how URLs are resolved and manipulated
+   */
+  const resolveUrl = resolveUrl$1;
+  /**
+   * If the xhr request was redirected, return the responseURL, otherwise,
+   * return the original url.
+   *
+   * @api private
+   *
+   * @param  {string} url - an url being requested
+   * @param  {XMLHttpRequest} req - xhr request result
+   *
+   * @return {string}
+   */
+
+  const resolveManifestRedirect = (url, req) => {
+    // To understand how the responseURL below is set and generated:
+    // - https://fetch.spec.whatwg.org/#concept-response-url
+    // - https://fetch.spec.whatwg.org/#atomic-http-redirect-handling
+    if (req && req.responseURL && url !== req.responseURL) {
+      return req.responseURL;
+    }
+    return url;
+  };
+  const logger = source => {
+    if (videojs.log.debug) {
+      return videojs.log.debug.bind(videojs, 'VHS:', `${source} >`);
+    }
+    return function () {};
+  };
+
+  /**
+   * Provides a compatibility layer between Video.js 7 and 8 API changes for VHS.
+   */
+  /**
+   * Delegates to videojs.obj.merge (Video.js 8) or
+   * videojs.mergeOptions (Video.js 7).
+   */
+
+  function merge(...args) {
+    const context = videojs.obj || videojs;
+    const fn = context.merge || context.mergeOptions;
+    return fn.apply(context, args);
+  }
+  /**
+   * Delegates to videojs.time.createTimeRanges (Video.js 8) or
+   * videojs.createTimeRanges (Video.js 7).
+   */
+
+  function createTimeRanges(...args) {
+    const context = videojs.time || videojs;
+    const fn = context.createTimeRanges || context.createTimeRanges;
+    return fn.apply(context, args);
+  }
+  /**
+   * Converts provided buffered ranges to a descriptive string
+   *
+   * @param {TimeRanges} buffered - received buffered time ranges
+   *
+   * @return {string} - descriptive string
+   */
+
+  function bufferedRangesToString(buffered) {
+    if (buffered.length === 0) {
+      return 'Buffered Ranges are empty';
+    }
+    let bufferedRangesStr = 'Buffered Ranges: \n';
+    for (let i = 0; i < buffered.length; i++) {
+      const start = buffered.start(i);
+      const end = buffered.end(i);
+      bufferedRangesStr += `${start} --> ${end}. Duration (${end - start})\n`;
+    }
+    return bufferedRangesStr;
+  }
+
+  /**
+   * ranges
+   *
+   * Utilities for working with TimeRanges.
+   *
+   */
+
+  const TIME_FUDGE_FACTOR = 1 / 30; // Comparisons between time values such as current time and the end of the buffered range
+  // can be misleading because of precision differences or when the current media has poorly
+  // aligned audio and video, which can cause values to be slightly off from what you would
+  // expect. This value is what we consider to be safe to use in such comparisons to account
+  // for these scenarios.
+
+  const SAFE_TIME_DELTA = TIME_FUDGE_FACTOR * 3;
+  const filterRanges = function (timeRanges, predicate) {
+    const results = [];
+    let i;
+    if (timeRanges && timeRanges.length) {
+      // Search for ranges that match the predicate
+      for (i = 0; i < timeRanges.length; i++) {
+        if (predicate(timeRanges.start(i), timeRanges.end(i))) {
+          results.push([timeRanges.start(i), timeRanges.end(i)]);
+        }
+      }
+    }
+    return createTimeRanges(results);
+  };
+  /**
+   * Attempts to find the buffered TimeRange that contains the specified
+   * time.
+   *
+   * @param {TimeRanges} buffered - the TimeRanges object to query
+   * @param {number} time  - the time to filter on.
+   * @return {TimeRanges} a new TimeRanges object
+   */
+
+  const findRange = function (buffered, time) {
+    return filterRanges(buffered, function (start, end) {
+      return start - SAFE_TIME_DELTA <= time && end + SAFE_TIME_DELTA >= time;
+    });
+  };
+  /**
+   * Returns the TimeRanges that begin later than the specified time.
+   *
+   * @param {TimeRanges} timeRanges - the TimeRanges object to query
+   * @param {number} time - the time to filter on.
+   * @return {TimeRanges} a new TimeRanges object.
+   */
+
+  const findNextRange = function (timeRanges, time) {
+    return filterRanges(timeRanges, function (start) {
+      return start - TIME_FUDGE_FACTOR >= time;
+    });
+  };
+  /**
+   * Returns gaps within a list of TimeRanges
+   *
+   * @param {TimeRanges} buffered - the TimeRanges object
+   * @return {TimeRanges} a TimeRanges object of gaps
+   */
+
+  const findGaps = function (buffered) {
+    if (buffered.length < 2) {
+      return createTimeRanges();
+    }
+    const ranges = [];
+    for (let i = 1; i < buffered.length; i++) {
+      const start = buffered.end(i - 1);
+      const end = buffered.start(i);
+      ranges.push([start, end]);
+    }
+    return createTimeRanges(ranges);
+  };
+  /**
+   * Calculate the intersection of two TimeRanges
+   *
+   * @param {TimeRanges} bufferA
+   * @param {TimeRanges} bufferB
+   * @return {TimeRanges} The interesection of `bufferA` with `bufferB`
+   */
+
+  const bufferIntersection = function (bufferA, bufferB) {
+    let start = null;
+    let end = null;
+    let arity = 0;
+    const extents = [];
+    const ranges = [];
+    if (!bufferA || !bufferA.length || !bufferB || !bufferB.length) {
+      return createTimeRanges();
+    } // Handle the case where we have both buffers and create an
+    // intersection of the two
+
+    let count = bufferA.length; // A) Gather up all start and end times
+
+    while (count--) {
+      extents.push({
+        time: bufferA.start(count),
+        type: 'start'
+      });
+      extents.push({
+        time: bufferA.end(count),
+        type: 'end'
+      });
+    }
+    count = bufferB.length;
+    while (count--) {
+      extents.push({
+        time: bufferB.start(count),
+        type: 'start'
+      });
+      extents.push({
+        time: bufferB.end(count),
+        type: 'end'
+      });
+    } // B) Sort them by time
+
+    extents.sort(function (a, b) {
+      return a.time - b.time;
+    }); // C) Go along one by one incrementing arity for start and decrementing
+    //    arity for ends
+
+    for (count = 0; count < extents.length; count++) {
+      if (extents[count].type === 'start') {
+        arity++; // D) If arity is ever incremented to 2 we are entering an
+        //    overlapping range
+
+        if (arity === 2) {
+          start = extents[count].time;
+        }
+      } else if (extents[count].type === 'end') {
+        arity--; // E) If arity is ever decremented to 1 we leaving an
+        //    overlapping range
+
+        if (arity === 1) {
+          end = extents[count].time;
+        }
+      } // F) Record overlapping ranges
+
+      if (start !== null && end !== null) {
+        ranges.push([start, end]);
+        start = null;
+        end = null;
+      }
+    }
+    return createTimeRanges(ranges);
+  };
+  /**
+   * Gets a human readable string for a TimeRange
+   *
+   * @param {TimeRange} range
+   * @return {string} a human readable string
+   */
+
+  const printableRange = range => {
+    const strArr = [];
+    if (!range || !range.length) {
+      return '';
+    }
+    for (let i = 0; i < range.length; i++) {
+      strArr.push(range.start(i) + ' => ' + range.end(i));
+    }
+    return strArr.join(', ');
+  };
+  /**
+   * Calculates the amount of time left in seconds until the player hits the end of the
+   * buffer and causes a rebuffer
+   *
+   * @param {TimeRange} buffered
+   *        The state of the buffer
+   * @param {Numnber} currentTime
+   *        The current time of the player
+   * @param {number} playbackRate
+   *        The current playback rate of the player. Defaults to 1.
+   * @return {number}
+   *         Time until the player has to start rebuffering in seconds.
+   * @function timeUntilRebuffer
+   */
+
+  const timeUntilRebuffer = function (buffered, currentTime, playbackRate = 1) {
+    const bufferedEnd = buffered.length ? buffered.end(buffered.length - 1) : 0;
+    return (bufferedEnd - currentTime) / playbackRate;
+  };
+  /**
+   * Converts a TimeRanges object into an array representation
+   *
+   * @param {TimeRanges} timeRanges
+   * @return {Array}
+   */
+
+  const timeRangesToArray = timeRanges => {
+    const timeRangesList = [];
+    for (let i = 0; i < timeRanges.length; i++) {
+      timeRangesList.push({
+        start: timeRanges.start(i),
+        end: timeRanges.end(i)
+      });
+    }
+    return timeRangesList;
+  };
+  /**
+   * Determines if two time range objects are different.
+   *
+   * @param {TimeRange} a
+   *        the first time range object to check
+   *
+   * @param {TimeRange} b
+   *        the second time range object to check
+   *
+   * @return {Boolean}
+   *         Whether the time range objects differ
+   */
+
+  const isRangeDifferent = function (a, b) {
+    // same object
+    if (a === b) {
+      return false;
+    } // one or the other is undefined
+
+    if (!a && b || !b && a) {
+      return true;
+    } // length is different
+
+    if (a.length !== b.length) {
+      return true;
+    } // see if any start/end pair is different
+
+    for (let i = 0; i < a.length; i++) {
+      if (a.start(i) !== b.start(i) || a.end(i) !== b.end(i)) {
+        return true;
+      }
+    } // if the length and every pair is the same
+    // this is the same time range
+
+    return false;
+  };
+  const lastBufferedEnd = function (a) {
+    if (!a || !a.length || !a.end) {
+      return;
+    }
+    return a.end(a.length - 1);
+  };
+  /**
+   * A utility function to add up the amount of time in a timeRange
+   * after a specified startTime.
+   * ie:[[0, 10], [20, 40], [50, 60]] with a startTime 0
+   *     would return 40 as there are 40s seconds after 0 in the timeRange
+   *
+   * @param {TimeRange} range
+   *        The range to check against
+   * @param {number} startTime
+   *        The time in the time range that you should start counting from
+   *
+   * @return {number}
+   *          The number of seconds in the buffer passed the specified time.
+   */
+
+  const timeAheadOf = function (range, startTime) {
+    let time = 0;
+    if (!range || !range.length) {
+      return time;
+    }
+    for (let i = 0; i < range.length; i++) {
+      const start = range.start(i);
+      const end = range.end(i); // startTime is after this range entirely
+
+      if (startTime > end) {
+        continue;
+      } // startTime is within this range
+
+      if (startTime > start && startTime <= end) {
+        time += end - startTime;
+        continue;
+      } // startTime is before this range.
+
+      time += end - start;
+    }
+    return time;
+  };
+
+  /**
+   * @file playlist.js
+   *
+   * Playlist related utilities.
+   */
+  /**
+   * Get the duration of a segment, with special cases for
+   * llhls segments that do not have a duration yet.
+   *
+   * @param {Object} playlist
+   *        the playlist that the segment belongs to.
+   * @param {Object} segment
+   *        the segment to get a duration for.
+   *
+   * @return {number}
+   *          the segment duration
+   */
+
+  const segmentDurationWithParts = (playlist, segment) => {
+    // if this isn't a preload segment
+    // then we will have a segment duration that is accurate.
+    if (!segment.preload) {
+      return segment.duration;
+    } // otherwise we have to add up parts and preload hints
+    // to get an up to date duration.
+
+    let result = 0;
+    (segment.parts || []).forEach(function (p) {
+      result += p.duration;
+    }); // for preload hints we have to use partTargetDuration
+    // as they won't even have a duration yet.
+
+    (segment.preloadHints || []).forEach(function (p) {
+      if (p.type === 'PART') {
+        result += playlist.partTargetDuration;
+      }
+    });
+    return result;
+  };
+  /**
+   * A function to get a combined list of parts and segments with durations
+   * and indexes.
+   *
+   * @param {Playlist} playlist the playlist to get the list for.
+   *
+   * @return {Array} The part/segment list.
+   */
+
+  const getPartsAndSegments = playlist => (playlist.segments || []).reduce((acc, segment, si) => {
+    if (segment.parts) {
+      segment.parts.forEach(function (part, pi) {
+        acc.push({
+          duration: part.duration,
+          segmentIndex: si,
+          partIndex: pi,
+          part,
+          segment
+        });
+      });
+    } else {
+      acc.push({
+        duration: segment.duration,
+        segmentIndex: si,
+        partIndex: null,
+        segment,
+        part: null
+      });
+    }
+    return acc;
+  }, []);
+  const getLastParts = media => {
+    const lastSegment = media.segments && media.segments.length && media.segments[media.segments.length - 1];
+    return lastSegment && lastSegment.parts || [];
+  };
+  const getKnownPartCount = ({
+    preloadSegment
+  }) => {
+    if (!preloadSegment) {
+      return;
+    }
+    const {
+      parts,
+      preloadHints
+    } = preloadSegment;
+    let partCount = (preloadHints || []).reduce((count, hint) => count + (hint.type === 'PART' ? 1 : 0), 0);
+    partCount += parts && parts.length ? parts.length : 0;
+    return partCount;
+  };
+  /**
+   * Get the number of seconds to delay from the end of a
+   * live playlist.
+   *
+   * @param {Playlist} main the main playlist
+   * @param {Playlist} media the media playlist
+   * @return {number} the hold back in seconds.
+   */
+
+  const liveEdgeDelay = (main, media) => {
+    if (media.endList) {
+      return 0;
+    } // dash suggestedPresentationDelay trumps everything
+
+    if (main && main.suggestedPresentationDelay) {
+      return main.suggestedPresentationDelay;
+    }
+    const hasParts = getLastParts(media).length > 0; // look for "part" delays from ll-hls first
+
+    if (hasParts && media.serverControl && media.serverControl.partHoldBack) {
+      return media.serverControl.partHoldBack;
+    } else if (hasParts && media.partTargetDuration) {
+      return media.partTargetDuration * 3; // finally look for full segment delays
+    } else if (media.serverControl && media.serverControl.holdBack) {
+      return media.serverControl.holdBack;
+    } else if (media.targetDuration) {
+      return media.targetDuration * 3;
+    }
+    return 0;
+  };
+  /**
+   * walk backward until we find a duration we can use
+   * or return a failure
+   *
+   * @param {Playlist} playlist the playlist to walk through
+   * @param {Number} endSequence the mediaSequence to stop walking on
+   */
+
+  const backwardDuration = function (playlist, endSequence) {
+    let result = 0;
+    let i = endSequence - playlist.mediaSequence; // if a start time is available for segment immediately following
+    // the interval, use it
+
+    let segment = playlist.segments[i]; // Walk backward until we find the latest segment with timeline
+    // information that is earlier than endSequence
+
+    if (segment) {
+      if (typeof segment.start !== 'undefined') {
+        return {
+          result: segment.start,
+          precise: true
+        };
+      }
+      if (typeof segment.end !== 'undefined') {
+        return {
+          result: segment.end - segment.duration,
+          precise: true
+        };
+      }
+    }
+    while (i--) {
+      segment = playlist.segments[i];
+      if (typeof segment.end !== 'undefined') {
+        return {
+          result: result + segment.end,
+          precise: true
+        };
+      }
+      result += segmentDurationWithParts(playlist, segment);
+      if (typeof segment.start !== 'undefined') {
+        return {
+          result: result + segment.start,
+          precise: true
+        };
+      }
+    }
+    return {
+      result,
+      precise: false
+    };
+  };
+  /**
+   * walk forward until we find a duration we can use
+   * or return a failure
+   *
+   * @param {Playlist} playlist the playlist to walk through
+   * @param {number} endSequence the mediaSequence to stop walking on
+   */
+
+  const forwardDuration = function (playlist, endSequence) {
+    let result = 0;
+    let segment;
+    let i = endSequence - playlist.mediaSequence; // Walk forward until we find the earliest segment with timeline
+    // information
+
+    for (; i < playlist.segments.length; i++) {
+      segment = playlist.segments[i];
+      if (typeof segment.start !== 'undefined') {
+        return {
+          result: segment.start - result,
+          precise: true
+        };
+      }
+      result += segmentDurationWithParts(playlist, segment);
+      if (typeof segment.end !== 'undefined') {
+        return {
+          result: segment.end - result,
+          precise: true
+        };
+      }
+    } // indicate we didn't find a useful duration estimate
+
+    return {
+      result: -1,
+      precise: false
+    };
+  };
+  /**
+    * Calculate the media duration from the segments associated with a
+    * playlist. The duration of a subinterval of the available segments
+    * may be calculated by specifying an end index.
+    *
+    * @param {Object} playlist a media playlist object
+    * @param {number=} endSequence an exclusive upper boundary
+    * for the playlist.  Defaults to playlist length.
+    * @param {number} expired the amount of time that has dropped
+    * off the front of the playlist in a live scenario
+    * @return {number} the duration between the first available segment
+    * and end index.
+    */
+
+  const intervalDuration = function (playlist, endSequence, expired) {
+    if (typeof endSequence === 'undefined') {
+      endSequence = playlist.mediaSequence + playlist.segments.length;
+    }
+    if (endSequence < playlist.mediaSequence) {
+      return 0;
+    } // do a backward walk to estimate the duration
+
+    const backward = backwardDuration(playlist, endSequence);
+    if (backward.precise) {
+      // if we were able to base our duration estimate on timing
+      // information provided directly from the Media Source, return
+      // it
+      return backward.result;
+    } // walk forward to see if a precise duration estimate can be made
+    // that way
+
+    const forward = forwardDuration(playlist, endSequence);
+    if (forward.precise) {
+      // we found a segment that has been buffered and so it's
+      // position is known precisely
+      return forward.result;
+    } // return the less-precise, playlist-based duration estimate
+
+    return backward.result + expired;
+  };
+  /**
+    * Calculates the duration of a playlist. If a start and end index
+    * are specified, the duration will be for the subset of the media
+    * timeline between those two indices. The total duration for live
+    * playlists is always Infinity.
+    *
+    * @param {Object} playlist a media playlist object
+    * @param {number=} endSequence an exclusive upper
+    * boundary for the playlist. Defaults to the playlist media
+    * sequence number plus its length.
+    * @param {number=} expired the amount of time that has
+    * dropped off the front of the playlist in a live scenario
+    * @return {number} the duration between the start index and end
+    * index.
+    */
+
+  const duration = function (playlist, endSequence, expired) {
+    if (!playlist) {
+      return 0;
+    }
+    if (typeof expired !== 'number') {
+      expired = 0;
+    } // if a slice of the total duration is not requested, use
+    // playlist-level duration indicators when they're present
+
+    if (typeof endSequence === 'undefined') {
+      // if present, use the duration specified in the playlist
+      if (playlist.totalDuration) {
+        return playlist.totalDuration;
+      } // duration should be Infinity for live playlists
+
+      if (!playlist.endList) {
+        return window.Infinity;
+      }
+    } // calculate the total duration based on the segment durations
+
+    return intervalDuration(playlist, endSequence, expired);
+  };
+  /**
+    * Calculate the time between two indexes in the current playlist
+    * neight the start- nor the end-index need to be within the current
+    * playlist in which case, the targetDuration of the playlist is used
+    * to approximate the durations of the segments
+    *
+    * @param {Array} options.durationList list to iterate over for durations.
+    * @param {number} options.defaultDuration duration to use for elements before or after the durationList
+    * @param {number} options.startIndex partsAndSegments index to start
+    * @param {number} options.endIndex partsAndSegments index to end.
+    * @return {number} the number of seconds between startIndex and endIndex
+    */
+
+  const sumDurations = function ({
+    defaultDuration,
+    durationList,
+    startIndex,
+    endIndex
+  }) {
+    let durations = 0;
+    if (startIndex > endIndex) {
+      [startIndex, endIndex] = [endIndex, startIndex];
+    }
+    if (startIndex < 0) {
+      for (let i = startIndex; i < Math.min(0, endIndex); i++) {
+        durations += defaultDuration;
+      }
+      startIndex = 0;
+    }
+    for (let i = startIndex; i < endIndex; i++) {
+      durations += durationList[i].duration;
+    }
+    return durations;
+  };
+  /**
+   * Calculates the playlist end time
+   *
+   * @param {Object} playlist a media playlist object
+   * @param {number=} expired the amount of time that has
+   *                  dropped off the front of the playlist in a live scenario
+   * @param {boolean|false} useSafeLiveEnd a boolean value indicating whether or not the
+   *                        playlist end calculation should consider the safe live end
+   *                        (truncate the playlist end by three segments). This is normally
+   *                        used for calculating the end of the playlist's seekable range.
+   *                        This takes into account the value of liveEdgePadding.
+   *                        Setting liveEdgePadding to 0 is equivalent to setting this to false.
+   * @param {number} liveEdgePadding a number indicating how far from the end of the playlist we should be in seconds.
+   *                 If this is provided, it is used in the safe live end calculation.
+   *                 Setting useSafeLiveEnd=false or liveEdgePadding=0 are equivalent.
+   *                 Corresponds to suggestedPresentationDelay in DASH manifests.
+   * @return {number} the end time of playlist
+   * @function playlistEnd
+   */
+
+  const playlistEnd = function (playlist, expired, useSafeLiveEnd, liveEdgePadding) {
+    if (!playlist || !playlist.segments) {
+      return null;
+    }
+    if (playlist.endList) {
+      return duration(playlist);
+    }
+    if (expired === null) {
+      return null;
+    }
+    expired = expired || 0;
+    let lastSegmentEndTime = intervalDuration(playlist, playlist.mediaSequence + playlist.segments.length, expired);
+    if (useSafeLiveEnd) {
+      liveEdgePadding = typeof liveEdgePadding === 'number' ? liveEdgePadding : liveEdgeDelay(null, playlist);
+      lastSegmentEndTime -= liveEdgePadding;
+    } // don't return a time less than zero
+
+    return Math.max(0, lastSegmentEndTime);
+  };
+  /**
+    * Calculates the interval of time that is currently seekable in a
+    * playlist. The returned time ranges are relative to the earliest
+    * moment in the specified playlist that is still available. A full
+    * seekable implementation for live streams would need to offset
+    * these values by the duration of content that has expired from the
+    * stream.
+    *
+    * @param {Object} playlist a media playlist object
+    * dropped off the front of the playlist in a live scenario
+    * @param {number=} expired the amount of time that has
+    * dropped off the front of the playlist in a live scenario
+    * @param {number} liveEdgePadding how far from the end of the playlist we should be in seconds.
+    *        Corresponds to suggestedPresentationDelay in DASH manifests.
+    * @return {TimeRanges} the periods of time that are valid targets
+    * for seeking
+    */
+
+  const seekable = function (playlist, expired, liveEdgePadding) {
+    const useSafeLiveEnd = true;
+    const seekableStart = expired || 0;
+    let seekableEnd = playlistEnd(playlist, expired, useSafeLiveEnd, liveEdgePadding);
+    if (seekableEnd === null) {
+      return createTimeRanges();
+    } // Clamp seekable end since it can not be less than the seekable start
+
+    if (seekableEnd < seekableStart) {
+      seekableEnd = seekableStart;
+    }
+    return createTimeRanges(seekableStart, seekableEnd);
+  };
+  /**
+   * Determine the index and estimated starting time of the segment that
+   * contains a specified playback position in a media playlist.
+   *
+   * @param {Object} options.playlist the media playlist to query
+   * @param {number} options.currentTime The number of seconds since the earliest
+   * possible position to determine the containing segment for
+   * @param {number} options.startTime the time when the segment/part starts
+   * @param {number} options.startingSegmentIndex the segment index to start looking at.
+   * @param {number?} [options.startingPartIndex] the part index to look at within the segment.
+   *
+   * @return {Object} an object with partIndex, segmentIndex, and startTime.
+   */
+
+  const getMediaInfoForTime = function ({
+    playlist,
+    currentTime,
+    startingSegmentIndex,
+    startingPartIndex,
+    startTime,
+    exactManifestTimings
+  }) {
+    let time = currentTime - startTime;
+    const partsAndSegments = getPartsAndSegments(playlist);
+    let startIndex = 0;
+    for (let i = 0; i < partsAndSegments.length; i++) {
+      const partAndSegment = partsAndSegments[i];
+      if (startingSegmentIndex !== partAndSegment.segmentIndex) {
+        continue;
+      } // skip this if part index does not match.
+
+      if (typeof startingPartIndex === 'number' && typeof partAndSegment.partIndex === 'number' && startingPartIndex !== partAndSegment.partIndex) {
+        continue;
+      }
+      startIndex = i;
+      break;
+    }
+    if (time < 0) {
+      // Walk backward from startIndex in the playlist, adding durations
+      // until we find a segment that contains `time` and return it
+      if (startIndex > 0) {
+        for (let i = startIndex - 1; i >= 0; i--) {
+          const partAndSegment = partsAndSegments[i];
+          time += partAndSegment.duration;
+          if (exactManifestTimings) {
+            if (time < 0) {
+              continue;
+            }
+          } else if (time + TIME_FUDGE_FACTOR <= 0) {
+            continue;
+          }
+          return {
+            partIndex: partAndSegment.partIndex,
+            segmentIndex: partAndSegment.segmentIndex,
+            startTime: startTime - sumDurations({
+              defaultDuration: playlist.targetDuration,
+              durationList: partsAndSegments,
+              startIndex,
+              endIndex: i
+            })
+          };
+        }
+      } // We were unable to find a good segment within the playlist
+      // so select the first segment
+
+      return {
+        partIndex: partsAndSegments[0] && partsAndSegments[0].partIndex || null,
+        segmentIndex: partsAndSegments[0] && partsAndSegments[0].segmentIndex || 0,
+        startTime: currentTime
+      };
+    } // When startIndex is negative, we first walk forward to first segment
+    // adding target durations. If we "run out of time" before getting to
+    // the first segment, return the first segment
+
+    if (startIndex < 0) {
+      for (let i = startIndex; i < 0; i++) {
+        time -= playlist.targetDuration;
+        if (time < 0) {
+          return {
+            partIndex: partsAndSegments[0] && partsAndSegments[0].partIndex || null,
+            segmentIndex: partsAndSegments[0] && partsAndSegments[0].segmentIndex || 0,
+            startTime: currentTime
+          };
+        }
+      }
+      startIndex = 0;
+    } // Walk forward from startIndex in the playlist, subtracting durations
+    // until we find a segment that contains `time` and return it
+
+    for (let i = startIndex; i < partsAndSegments.length; i++) {
+      const partAndSegment = partsAndSegments[i];
+      time -= partAndSegment.duration;
+      const canUseFudgeFactor = partAndSegment.duration > TIME_FUDGE_FACTOR;
+      const isExactlyAtTheEnd = time === 0;
+      const isExtremelyCloseToTheEnd = canUseFudgeFactor && time + TIME_FUDGE_FACTOR >= 0;
+      if (isExactlyAtTheEnd || isExtremelyCloseToTheEnd) {
+        // 1) We are exactly at the end of the current segment.
+        // 2) We are extremely close to the end of the current segment (The difference is less than  1 / 30).
+        //    We may encounter this situation when
+        //    we don't have exact match between segment duration info in the manifest and the actual duration of the segment
+        //    For example:
+        //    We appended 3 segments 10 seconds each, meaning we should have 30 sec buffered,
+        //    but we the actual buffered is 29.99999
+        //
+        // In both cases:
+        // if we passed current time -> it means that we already played current segment
+        // if we passed buffered.end -> it means that this segment is already loaded and buffered
+        // we should select the next segment if we have one:
+        if (i !== partsAndSegments.length - 1) {
+          continue;
+        }
+      }
+      if (exactManifestTimings) {
+        if (time > 0) {
+          continue;
+        }
+      } else if (time - TIME_FUDGE_FACTOR >= 0) {
+        continue;
+      }
+      return {
+        partIndex: partAndSegment.partIndex,
+        segmentIndex: partAndSegment.segmentIndex,
+        startTime: startTime + sumDurations({
+          defaultDuration: playlist.targetDuration,
+          durationList: partsAndSegments,
+          startIndex,
+          endIndex: i
+        })
+      };
+    } // We are out of possible candidates so load the last one...
+
+    return {
+      segmentIndex: partsAndSegments[partsAndSegments.length - 1].segmentIndex,
+      partIndex: partsAndSegments[partsAndSegments.length - 1].partIndex,
+      startTime: currentTime
+    };
+  };
+  /**
+   * Check whether the playlist is excluded or not.
+   *
+   * @param {Object} playlist the media playlist object
+   * @return {boolean} whether the playlist is excluded or not
+   * @function isExcluded
+   */
+
+  const isExcluded = function (playlist) {
+    return playlist.excludeUntil && playlist.excludeUntil > Date.now();
+  };
+  /**
+   * Check whether the playlist is compatible with current playback configuration or has
+   * been excluded permanently for being incompatible.
+   *
+   * @param {Object} playlist the media playlist object
+   * @return {boolean} whether the playlist is incompatible or not
+   * @function isIncompatible
+   */
+
+  const isIncompatible = function (playlist) {
+    return playlist.excludeUntil && playlist.excludeUntil === Infinity;
+  };
+  /**
+   * Check whether the playlist is enabled or not.
+   *
+   * @param {Object} playlist the media playlist object
+   * @return {boolean} whether the playlist is enabled or not
+   * @function isEnabled
+   */
+
+  const isEnabled = function (playlist) {
+    const excluded = isExcluded(playlist);
+    return !playlist.disabled && !excluded;
+  };
+  /**
+   * Check whether the playlist has been manually disabled through the representations api.
+   *
+   * @param {Object} playlist the media playlist object
+   * @return {boolean} whether the playlist is disabled manually or not
+   * @function isDisabled
+   */
+
+  const isDisabled = function (playlist) {
+    return playlist.disabled;
+  };
+  /**
+   * Returns whether the current playlist is an AES encrypted HLS stream
+   *
+   * @return {boolean} true if it's an AES encrypted HLS stream
+   */
+
+  const isAes = function (media) {
+    for (let i = 0; i < media.segments.length; i++) {
+      if (media.segments[i].key) {
+        return true;
+      }
+    }
+    return false;
+  };
+  /**
+   * Checks if the playlist has a value for the specified attribute
+   *
+   * @param {string} attr
+   *        Attribute to check for
+   * @param {Object} playlist
+   *        The media playlist object
+   * @return {boolean}
+   *         Whether the playlist contains a value for the attribute or not
+   * @function hasAttribute
+   */
+
+  const hasAttribute = function (attr, playlist) {
+    return playlist.attributes && playlist.attributes[attr];
+  };
+  /**
+   * Estimates the time required to complete a segment download from the specified playlist
+   *
+   * @param {number} segmentDuration
+   *        Duration of requested segment
+   * @param {number} bandwidth
+   *        Current measured bandwidth of the player
+   * @param {Object} playlist
+   *        The media playlist object
+   * @param {number=} bytesReceived
+   *        Number of bytes already received for the request. Defaults to 0
+   * @return {number|NaN}
+   *         The estimated time to request the segment. NaN if bandwidth information for
+   *         the given playlist is unavailable
+   * @function estimateSegmentRequestTime
+   */
+
+  const estimateSegmentRequestTime = function (segmentDuration, bandwidth, playlist, bytesReceived = 0) {
+    if (!hasAttribute('BANDWIDTH', playlist)) {
+      return NaN;
+    }
+    const size = segmentDuration * playlist.attributes.BANDWIDTH;
+    return (size - bytesReceived * 8) / bandwidth;
+  };
+  /*
+   * Returns whether the current playlist is the lowest rendition
+   *
+   * @return {Boolean} true if on lowest rendition
+   */
+
+  const isLowestEnabledRendition = (main, media) => {
+    if (main.playlists.length === 1) {
+      return true;
+    }
+    const currentBandwidth = media.attributes.BANDWIDTH || Number.MAX_VALUE;
+    return main.playlists.filter(playlist => {
+      if (!isEnabled(playlist)) {
+        return false;
+      }
+      return (playlist.attributes.BANDWIDTH || 0) < currentBandwidth;
+    }).length === 0;
+  };
+  const playlistMatch = (a, b) => {
+    // both playlits are null
+    // or only one playlist is non-null
+    // no match
+    if (!a && !b || !a && b || a && !b) {
+      return false;
+    } // playlist objects are the same, match
+
+    if (a === b) {
+      return true;
+    } // first try to use id as it should be the most
+    // accurate
+
+    if (a.id && b.id && a.id === b.id) {
+      return true;
+    } // next try to use reslovedUri as it should be the
+    // second most accurate.
+
+    if (a.resolvedUri && b.resolvedUri && a.resolvedUri === b.resolvedUri) {
+      return true;
+    } // finally try to use uri as it should be accurate
+    // but might miss a few cases for relative uris
+
+    if (a.uri && b.uri && a.uri === b.uri) {
+      return true;
+    }
+    return false;
+  };
+  const someAudioVariant = function (main, callback) {
+    const AUDIO = main && main.mediaGroups && main.mediaGroups.AUDIO || {};
+    let found = false;
+    for (const groupName in AUDIO) {
+      for (const label in AUDIO[groupName]) {
+        found = callback(AUDIO[groupName][label]);
+        if (found) {
+          break;
+        }
+      }
+      if (found) {
+        break;
+      }
+    }
+    return !!found;
+  };
+  const isAudioOnly = main => {
+    // we are audio only if we have no main playlists but do
+    // have media group playlists.
+    if (!main || !main.playlists || !main.playlists.length) {
+      // without audio variants or playlists this
+      // is not an audio only main.
+      const found = someAudioVariant(main, variant => variant.playlists && variant.playlists.length || variant.uri);
+      return found;
+    } // if every playlist has only an audio codec it is audio only
+
+    for (let i = 0; i < main.playlists.length; i++) {
+      const playlist = main.playlists[i];
+      const CODECS = playlist.attributes && playlist.attributes.CODECS; // all codecs are audio, this is an audio playlist.
+
+      if (CODECS && CODECS.split(',').every(c => isAudioCodec(c))) {
+        continue;
+      } // playlist is in an audio group it is audio only
+
+      const found = someAudioVariant(main, variant => playlistMatch(playlist, variant));
+      if (found) {
+        continue;
+      } // if we make it here this playlist isn't audio and we
+      // are not audio only
+
+      return false;
+    } // if we make it past every playlist without returning, then
+    // this is an audio only playlist.
+
+    return true;
+  }; // exports
+
+  var Playlist = {
+    liveEdgeDelay,
+    duration,
+    seekable,
+    getMediaInfoForTime,
+    isEnabled,
+    isDisabled,
+    isExcluded,
+    isIncompatible,
+    playlistEnd,
+    isAes,
+    hasAttribute,
+    estimateSegmentRequestTime,
+    isLowestEnabledRendition,
+    isAudioOnly,
+    playlistMatch,
+    segmentDurationWithParts
+  };
+  const {
+    log
+  } = videojs;
+  const createPlaylistID = (index, uri) => {
+    return `${index}-${uri}`;
+  }; // default function for creating a group id
+
+  const groupID = (type, group, label) => {
+    return `placeholder-uri-${type}-${group}-${label}`;
+  };
+  /**
+   * Parses a given m3u8 playlist
+   *
+   * @param {Function} [onwarn]
+   *        a function to call when the parser triggers a warning event.
+   * @param {Function} [oninfo]
+   *        a function to call when the parser triggers an info event.
+   * @param {string} manifestString
+   *        The downloaded manifest string
+   * @param {Object[]} [customTagParsers]
+   *        An array of custom tag parsers for the m3u8-parser instance
+   * @param {Object[]} [customTagMappers]
+   *        An array of custom tag mappers for the m3u8-parser instance
+   * @param {boolean} [llhls]
+   *        Whether to keep ll-hls features in the manifest after parsing.
+   * @return {Object}
+   *         The manifest object
+   */
+
+  const parseManifest = ({
+    onwarn,
+    oninfo,
+    manifestString,
+    customTagParsers = [],
+    customTagMappers = [],
+    llhls
+  }) => {
+    const parser = new Parser();
+    if (onwarn) {
+      parser.on('warn', onwarn);
+    }
+    if (oninfo) {
+      parser.on('info', oninfo);
+    }
+    customTagParsers.forEach(customParser => parser.addParser(customParser));
+    customTagMappers.forEach(mapper => parser.addTagMapper(mapper));
+    parser.push(manifestString);
+    parser.end();
+    const manifest = parser.manifest; // remove llhls features from the parsed manifest
+    // if we don't want llhls support.
+
+    if (!llhls) {
+      ['preloadSegment', 'skip', 'serverControl', 'renditionReports', 'partInf', 'partTargetDuration'].forEach(function (k) {
+        if (manifest.hasOwnProperty(k)) {
+          delete manifest[k];
+        }
+      });
+      if (manifest.segments) {
+        manifest.segments.forEach(function (segment) {
+          ['parts', 'preloadHints'].forEach(function (k) {
+            if (segment.hasOwnProperty(k)) {
+              delete segment[k];
+            }
+          });
+        });
+      }
+    }
+    if (!manifest.targetDuration) {
+      let targetDuration = 10;
+      if (manifest.segments && manifest.segments.length) {
+        targetDuration = manifest.segments.reduce((acc, s) => Math.max(acc, s.duration), 0);
+      }
+      if (onwarn) {
+        onwarn({
+          message: `manifest has no targetDuration defaulting to ${targetDuration}`
+        });
+      }
+      manifest.targetDuration = targetDuration;
+    }
+    const parts = getLastParts(manifest);
+    if (parts.length && !manifest.partTargetDuration) {
+      const partTargetDuration = parts.reduce((acc, p) => Math.max(acc, p.duration), 0);
+      if (onwarn) {
+        onwarn({
+          message: `manifest has no partTargetDuration defaulting to ${partTargetDuration}`
+        });
+        log.error('LL-HLS manifest has parts but lacks required #EXT-X-PART-INF:PART-TARGET value. See https://datatracker.ietf.org/doc/html/draft-pantos-hls-rfc8216bis-09#section-4.4.3.7. Playback is not guaranteed.');
+      }
+      manifest.partTargetDuration = partTargetDuration;
+    }
+    return manifest;
+  };
+  /**
+   * Loops through all supported media groups in main and calls the provided
+   * callback for each group
+   *
+   * @param {Object} main
+   *        The parsed main manifest object
+   * @param {Function} callback
+   *        Callback to call for each media group
+   */
+
+  const forEachMediaGroup = (main, callback) => {
+    if (!main.mediaGroups) {
+      return;
+    }
+    ['AUDIO', 'SUBTITLES'].forEach(mediaType => {
+      if (!main.mediaGroups[mediaType]) {
+        return;
+      }
+      for (const groupKey in main.mediaGroups[mediaType]) {
+        for (const labelKey in main.mediaGroups[mediaType][groupKey]) {
+          const mediaProperties = main.mediaGroups[mediaType][groupKey][labelKey];
+          callback(mediaProperties, mediaType, groupKey, labelKey);
+        }
+      }
+    });
+  };
+  /**
+   * Adds properties and attributes to the playlist to keep consistent functionality for
+   * playlists throughout VHS.
+   *
+   * @param {Object} config
+   *        Arguments object
+   * @param {Object} config.playlist
+   *        The media playlist
+   * @param {string} [config.uri]
+   *        The uri to the media playlist (if media playlist is not from within a main
+   *        playlist)
+   * @param {string} id
+   *        ID to use for the playlist
+   */
+
+  const setupMediaPlaylist = ({
+    playlist,
+    uri,
+    id
+  }) => {
+    playlist.id = id;
+    playlist.playlistErrors_ = 0;
+    if (uri) {
+      // For media playlists, m3u8-parser does not have access to a URI, as HLS media
+      // playlists do not contain their own source URI, but one is needed for consistency in
+      // VHS.
+      playlist.uri = uri;
+    } // For HLS main playlists, even though certain attributes MUST be defined, the
+    // stream may still be played without them.
+    // For HLS media playlists, m3u8-parser does not attach an attributes object to the
+    // manifest.
+    //
+    // To avoid undefined reference errors through the project, and make the code easier
+    // to write/read, add an empty attributes object for these cases.
+
+    playlist.attributes = playlist.attributes || {};
+  };
+  /**
+   * Adds ID, resolvedUri, and attributes properties to each playlist of the main, where
+   * necessary. In addition, creates playlist IDs for each playlist and adds playlist ID to
+   * playlist references to the playlists array.
+   *
+   * @param {Object} main
+   *        The main playlist
+   */
+
+  const setupMediaPlaylists = main => {
+    let i = main.playlists.length;
+    while (i--) {
+      const playlist = main.playlists[i];
+      setupMediaPlaylist({
+        playlist,
+        id: createPlaylistID(i, playlist.uri)
+      });
+      playlist.resolvedUri = resolveUrl(main.uri, playlist.uri);
+      main.playlists[playlist.id] = playlist; // URI reference added for backwards compatibility
+
+      main.playlists[playlist.uri] = playlist; // Although the spec states an #EXT-X-STREAM-INF tag MUST have a BANDWIDTH attribute,
+      // the stream can be played without it. Although an attributes property may have been
+      // added to the playlist to prevent undefined references, issue a warning to fix the
+      // manifest.
+
+      if (!playlist.attributes.BANDWIDTH) {
+        log.warn('Invalid playlist STREAM-INF detected. Missing BANDWIDTH attribute.');
+      }
+    }
+  };
+  /**
+   * Adds resolvedUri properties to each media group.
+   *
+   * @param {Object} main
+   *        The main playlist
+   */
+
+  const resolveMediaGroupUris = main => {
+    forEachMediaGroup(main, properties => {
+      if (properties.uri) {
+        properties.resolvedUri = resolveUrl(main.uri, properties.uri);
+      }
+    });
+  };
+  /**
+   * Creates a main playlist wrapper to insert a sole media playlist into.
+   *
+   * @param {Object} media
+   *        Media playlist
+   * @param {string} uri
+   *        The media URI
+   *
+   * @return {Object}
+   *         main playlist
+   */
+
+  const mainForMedia = (media, uri) => {
+    const id = createPlaylistID(0, uri);
+    const main = {
+      mediaGroups: {
+        'AUDIO': {},
+        'VIDEO': {},
+        'CLOSED-CAPTIONS': {},
+        'SUBTITLES': {}
+      },
+      uri: window.location.href,
+      resolvedUri: window.location.href,
+      playlists: [{
+        uri,
+        id,
+        resolvedUri: uri,
+        // m3u8-parser does not attach an attributes property to media playlists so make
+        // sure that the property is attached to avoid undefined reference errors
+        attributes: {}
+      }]
+    }; // set up ID reference
+
+    main.playlists[id] = main.playlists[0]; // URI reference added for backwards compatibility
+
+    main.playlists[uri] = main.playlists[0];
+    return main;
+  };
+  /**
+   * Does an in-place update of the main manifest to add updated playlist URI references
+   * as well as other properties needed by VHS that aren't included by the parser.
+   *
+   * @param {Object} main
+   *        main manifest object
+   * @param {string} uri
+   *        The source URI
+   * @param {function} createGroupID
+   *        A function to determine how to create the groupID for mediaGroups
+   */
+
+  const addPropertiesToMain = (main, uri, createGroupID = groupID) => {
+    main.uri = uri;
+    for (let i = 0; i < main.playlists.length; i++) {
+      if (!main.playlists[i].uri) {
+        // Set up phony URIs for the playlists since playlists are referenced by their URIs
+        // throughout VHS, but some formats (e.g., DASH) don't have external URIs
+        // TODO: consider adding dummy URIs in mpd-parser
+        const phonyUri = `placeholder-uri-${i}`;
+        main.playlists[i].uri = phonyUri;
+      }
+    }
+    const audioOnlyMain = isAudioOnly(main);
+    forEachMediaGroup(main, (properties, mediaType, groupKey, labelKey) => {
+      // add a playlist array under properties
+      if (!properties.playlists || !properties.playlists.length) {
+        // If the manifest is audio only and this media group does not have a uri, check
+        // if the media group is located in the main list of playlists. If it is, don't add
+        // placeholder properties as it shouldn't be considered an alternate audio track.
+        if (audioOnlyMain && mediaType === 'AUDIO' && !properties.uri) {
+          for (let i = 0; i < main.playlists.length; i++) {
+            const p = main.playlists[i];
+            if (p.attributes && p.attributes.AUDIO && p.attributes.AUDIO === groupKey) {
+              return;
+            }
+          }
+        }
+        properties.playlists = [_extends$1({}, properties)];
+      }
+      properties.playlists.forEach(function (p, i) {
+        const groupId = createGroupID(mediaType, groupKey, labelKey, p);
+        const id = createPlaylistID(i, groupId);
+        if (p.uri) {
+          p.resolvedUri = p.resolvedUri || resolveUrl(main.uri, p.uri);
+        } else {
+          // DEPRECATED, this has been added to prevent a breaking change.
+          // previously we only ever had a single media group playlist, so
+          // we mark the first playlist uri without prepending the index as we used to
+          // ideally we would do all of the playlists the same way.
+          p.uri = i === 0 ? groupId : id; // don't resolve a placeholder uri to an absolute url, just use
+          // the placeholder again
+
+          p.resolvedUri = p.uri;
+        }
+        p.id = p.id || id; // add an empty attributes object, all playlists are
+        // expected to have this.
+
+        p.attributes = p.attributes || {}; // setup ID and URI references (URI for backwards compatibility)
+
+        main.playlists[p.id] = p;
+        main.playlists[p.uri] = p;
+      });
+    });
+    setupMediaPlaylists(main);
+    resolveMediaGroupUris(main);
+  };
+  class DateRangesStorage {
+    constructor() {
+      this.offset_ = null;
+      this.pendingDateRanges_ = new Map();
+      this.processedDateRanges_ = new Map();
+    }
+    setOffset(segments = []) {
+      // already set
+      if (this.offset_ !== null) {
+        return;
+      } // no segment to process
+
+      if (!segments.length) {
+        return;
+      }
+      const [firstSegment] = segments; // no program date time
+
+      if (firstSegment.programDateTime === undefined) {
+        return;
+      } // Set offset as ProgramDateTime for the very first segment of the very first playlist load:
+
+      this.offset_ = firstSegment.programDateTime / 1000;
+    }
+    setPendingDateRanges(dateRanges = []) {
+      if (!dateRanges.length) {
+        return;
+      }
+      const [dateRange] = dateRanges;
+      const startTime = dateRange.startDate.getTime();
+      this.trimProcessedDateRanges_(startTime);
+      this.pendingDateRanges_ = dateRanges.reduce((map, pendingDateRange) => {
+        map.set(pendingDateRange.id, pendingDateRange);
+        return map;
+      }, new Map());
+    }
+    processDateRange(dateRange) {
+      this.pendingDateRanges_.delete(dateRange.id);
+      this.processedDateRanges_.set(dateRange.id, dateRange);
+    }
+    getDateRangesToProcess() {
+      if (this.offset_ === null) {
+        return [];
+      }
+      const dateRangeClasses = {};
+      const dateRangesToProcess = [];
+      this.pendingDateRanges_.forEach((dateRange, id) => {
+        if (this.processedDateRanges_.has(id)) {
+          return;
+        }
+        dateRange.startTime = dateRange.startDate.getTime() / 1000 - this.offset_;
+        dateRange.processDateRange = () => this.processDateRange(dateRange);
+        dateRangesToProcess.push(dateRange);
+        if (!dateRange.class) {
+          return;
+        }
+        if (dateRangeClasses[dateRange.class]) {
+          const length = dateRangeClasses[dateRange.class].push(dateRange);
+          dateRange.classListIndex = length - 1;
+        } else {
+          dateRangeClasses[dateRange.class] = [dateRange];
+          dateRange.classListIndex = 0;
+        }
+      });
+      for (const dateRange of dateRangesToProcess) {
+        const classList = dateRangeClasses[dateRange.class] || [];
+        if (dateRange.endDate) {
+          dateRange.endTime = dateRange.endDate.getTime() / 1000 - this.offset_;
+        } else if (dateRange.endOnNext && classList[dateRange.classListIndex + 1]) {
+          dateRange.endTime = classList[dateRange.classListIndex + 1].startTime;
+        } else if (dateRange.duration) {
+          dateRange.endTime = dateRange.startTime + dateRange.duration;
+        } else if (dateRange.plannedDuration) {
+          dateRange.endTime = dateRange.startTime + dateRange.plannedDuration;
+        } else {
+          dateRange.endTime = dateRange.startTime;
+        }
+      }
+      return dateRangesToProcess;
+    }
+    trimProcessedDateRanges_(startTime) {
+      const copy = new Map(this.processedDateRanges_);
+      copy.forEach((dateRange, id) => {
+        if (dateRange.startDate.getTime() < startTime) {
+          this.processedDateRanges_.delete(id);
+        }
+      });
+    }
+  }
+  const {
+    EventTarget: EventTarget$1
+  } = videojs;
+  const addLLHLSQueryDirectives = (uri, media) => {
+    if (media.endList || !media.serverControl) {
+      return uri;
+    }
+    const parameters = {};
+    if (media.serverControl.canBlockReload) {
+      const {
+        preloadSegment
+      } = media; // next msn is a zero based value, length is not.
+
+      let nextMSN = media.mediaSequence + media.segments.length; // If preload segment has parts then it is likely
+      // that we are going to request a part of that preload segment.
+      // the logic below is used to determine that.
+
+      if (preloadSegment) {
+        const parts = preloadSegment.parts || []; // _HLS_part is a zero based index
+
+        const nextPart = getKnownPartCount(media) - 1; // if nextPart is > -1 and not equal to just the
+        // length of parts, then we know we had part preload hints
+        // and we need to add the _HLS_part= query
+
+        if (nextPart > -1 && nextPart !== parts.length - 1) {
+          // add existing parts to our preload hints
+          // eslint-disable-next-line
+          parameters._HLS_part = nextPart;
+        } // this if statement makes sure that we request the msn
+        // of the preload segment if:
+        // 1. the preload segment had parts (and was not yet a full segment)
+        //    but was added to our segments array
+        // 2. the preload segment had preload hints for parts that are not in
+        //    the manifest yet.
+        // in all other cases we want the segment after the preload segment
+        // which will be given by using media.segments.length because it is 1 based
+        // rather than 0 based.
+
+        if (nextPart > -1 || parts.length) {
+          nextMSN--;
+        }
+      } // add _HLS_msn= in front of any _HLS_part query
+      // eslint-disable-next-line
+
+      parameters._HLS_msn = nextMSN;
+    }
+    if (media.serverControl && media.serverControl.canSkipUntil) {
+      // add _HLS_skip= infront of all other queries.
+      // eslint-disable-next-line
+      parameters._HLS_skip = media.serverControl.canSkipDateranges ? 'v2' : 'YES';
+    }
+    if (Object.keys(parameters).length) {
+      const parsedUri = new window.URL(uri);
+      ['_HLS_skip', '_HLS_msn', '_HLS_part'].forEach(function (name) {
+        if (!parameters.hasOwnProperty(name)) {
+          return;
+        }
+        parsedUri.searchParams.set(name, parameters[name]);
+      });
+      uri = parsedUri.toString();
+    }
+    return uri;
+  };
+  /**
+   * Returns a new segment object with properties and
+   * the parts array merged.
+   *
+   * @param {Object} a the old segment
+   * @param {Object} b the new segment
+   *
+   * @return {Object} the merged segment
+   */
+
+  const updateSegment = (a, b) => {
+    if (!a) {
+      return b;
+    }
+    const result = merge(a, b); // if only the old segment has preload hints
+    // and the new one does not, remove preload hints.
+
+    if (a.preloadHints && !b.preloadHints) {
+      delete result.preloadHints;
+    } // if only the old segment has parts
+    // then the parts are no longer valid
+
+    if (a.parts && !b.parts) {
+      delete result.parts; // if both segments have parts
+      // copy part propeties from the old segment
+      // to the new one.
+    } else if (a.parts && b.parts) {
+      for (let i = 0; i < b.parts.length; i++) {
+        if (a.parts && a.parts[i]) {
+          result.parts[i] = merge(a.parts[i], b.parts[i]);
+        }
+      }
+    } // set skipped to false for segments that have
+    // have had information merged from the old segment.
+
+    if (!a.skipped && b.skipped) {
+      result.skipped = false;
+    } // set preload to false for segments that have
+    // had information added in the new segment.
+
+    if (a.preload && !b.preload) {
+      result.preload = false;
+    }
+    return result;
+  };
+  /**
+   * Returns a new array of segments that is the result of merging
+   * properties from an older list of segments onto an updated
+   * list. No properties on the updated playlist will be ovewritten.
+   *
+   * @param {Array} original the outdated list of segments
+   * @param {Array} update the updated list of segments
+   * @param {number=} offset the index of the first update
+   * segment in the original segment list. For non-live playlists,
+   * this should always be zero and does not need to be
+   * specified. For live playlists, it should be the difference
+   * between the media sequence numbers in the original and updated
+   * playlists.
+   * @return {Array} a list of merged segment objects
+   */
+
+  const updateSegments = (original, update, offset) => {
+    const oldSegments = original.slice();
+    const newSegments = update.slice();
+    offset = offset || 0;
+    const result = [];
+    let currentMap;
+    for (let newIndex = 0; newIndex < newSegments.length; newIndex++) {
+      const oldSegment = oldSegments[newIndex + offset];
+      const newSegment = newSegments[newIndex];
+      if (oldSegment) {
+        currentMap = oldSegment.map || currentMap;
+        result.push(updateSegment(oldSegment, newSegment));
+      } else {
+        // carry over map to new segment if it is missing
+        if (currentMap && !newSegment.map) {
+          newSegment.map = currentMap;
+        }
+        result.push(newSegment);
+      }
+    }
+    return result;
+  };
+  const resolveSegmentUris = (segment, baseUri) => {
+    // preloadSegment will not have a uri at all
+    // as the segment isn't actually in the manifest yet, only parts
+    if (!segment.resolvedUri && segment.uri) {
+      segment.resolvedUri = resolveUrl(baseUri, segment.uri);
+    }
+    if (segment.key && !segment.key.resolvedUri) {
+      segment.key.resolvedUri = resolveUrl(baseUri, segment.key.uri);
+    }
+    if (segment.map && !segment.map.resolvedUri) {
+      segment.map.resolvedUri = resolveUrl(baseUri, segment.map.uri);
+    }
+    if (segment.map && segment.map.key && !segment.map.key.resolvedUri) {
+      segment.map.key.resolvedUri = resolveUrl(baseUri, segment.map.key.uri);
+    }
+    if (segment.parts && segment.parts.length) {
+      segment.parts.forEach(p => {
+        if (p.resolvedUri) {
+          return;
+        }
+        p.resolvedUri = resolveUrl(baseUri, p.uri);
+      });
+    }
+    if (segment.preloadHints && segment.preloadHints.length) {
+      segment.preloadHints.forEach(p => {
+        if (p.resolvedUri) {
+          return;
+        }
+        p.resolvedUri = resolveUrl(baseUri, p.uri);
+      });
+    }
+  };
+  const getAllSegments = function (media) {
+    const segments = media.segments || [];
+    const preloadSegment = media.preloadSegment; // a preloadSegment with only preloadHints is not currently
+    // a usable segment, only include a preloadSegment that has
+    // parts.
+
+    if (preloadSegment && preloadSegment.parts && preloadSegment.parts.length) {
+      // if preloadHints has a MAP that means that the
+      // init segment is going to change. We cannot use any of the parts
+      // from this preload segment.
+      if (preloadSegment.preloadHints) {
+        for (let i = 0; i < preloadSegment.preloadHints.length; i++) {
+          if (preloadSegment.preloadHints[i].type === 'MAP') {
+            return segments;
+          }
+        }
+      } // set the duration for our preload segment to target duration.
+
+      preloadSegment.duration = media.targetDuration;
+      preloadSegment.preload = true;
+      segments.push(preloadSegment);
+    }
+    return segments;
+  }; // consider the playlist unchanged if the playlist object is the same or
+  // the number of segments is equal, the media sequence number is unchanged,
+  // and this playlist hasn't become the end of the playlist
+
+  const isPlaylistUnchanged = (a, b) => a === b || a.segments && b.segments && a.segments.length === b.segments.length && a.endList === b.endList && a.mediaSequence === b.mediaSequence && a.preloadSegment === b.preloadSegment;
+  /**
+    * Returns a new main playlist that is the result of merging an
+    * updated media playlist into the original version. If the
+    * updated media playlist does not match any of the playlist
+    * entries in the original main playlist, null is returned.
+    *
+    * @param {Object} main a parsed main M3U8 object
+    * @param {Object} media a parsed media M3U8 object
+    * @return {Object} a new object that represents the original
+    * main playlist with the updated media playlist merged in, or
+    * null if the merge produced no change.
+    */
+
+  const updateMain$1 = (main, newMedia, unchangedCheck = isPlaylistUnchanged) => {
+    const result = merge(main, {});
+    const oldMedia = result.playlists[newMedia.id];
+    if (!oldMedia) {
+      return null;
+    }
+    if (unchangedCheck(oldMedia, newMedia)) {
+      return null;
+    }
+    newMedia.segments = getAllSegments(newMedia);
+    const mergedPlaylist = merge(oldMedia, newMedia); // always use the new media's preload segment
+
+    if (mergedPlaylist.preloadSegment && !newMedia.preloadSegment) {
+      delete mergedPlaylist.preloadSegment;
+    } // if the update could overlap existing segment information, merge the two segment lists
+
+    if (oldMedia.segments) {
+      if (newMedia.skip) {
+        newMedia.segments = newMedia.segments || []; // add back in objects for skipped segments, so that we merge
+        // old properties into the new segments
+
+        for (let i = 0; i < newMedia.skip.skippedSegments; i++) {
+          newMedia.segments.unshift({
+            skipped: true
+          });
+        }
+      }
+      mergedPlaylist.segments = updateSegments(oldMedia.segments, newMedia.segments, newMedia.mediaSequence - oldMedia.mediaSequence);
+    } // resolve any segment URIs to prevent us from having to do it later
+
+    mergedPlaylist.segments.forEach(segment => {
+      resolveSegmentUris(segment, mergedPlaylist.resolvedUri);
+    }); // TODO Right now in the playlists array there are two references to each playlist, one
+    // that is referenced by index, and one by URI. The index reference may no longer be
+    // necessary.
+
+    for (let i = 0; i < result.playlists.length; i++) {
+      if (result.playlists[i].id === newMedia.id) {
+        result.playlists[i] = mergedPlaylist;
+      }
+    }
+    result.playlists[newMedia.id] = mergedPlaylist; // URI reference added for backwards compatibility
+
+    result.playlists[newMedia.uri] = mergedPlaylist; // update media group playlist references.
+
+    forEachMediaGroup(main, (properties, mediaType, groupKey, labelKey) => {
+      if (!properties.playlists) {
+        return;
+      }
+      for (let i = 0; i < properties.playlists.length; i++) {
+        if (newMedia.id === properties.playlists[i].id) {
+          properties.playlists[i] = mergedPlaylist;
+        }
+      }
+    });
+    return result;
+  };
+  /**
+   * Calculates the time to wait before refreshing a live playlist
+   *
+   * @param {Object} media
+   *        The current media
+   * @param {boolean} update
+   *        True if there were any updates from the last refresh, false otherwise
+   * @return {number}
+   *         The time in ms to wait before refreshing the live playlist
+   */
+
+  const refreshDelay = (media, update) => {
+    const segments = media.segments || [];
+    const lastSegment = segments[segments.length - 1];
+    const lastPart = lastSegment && lastSegment.parts && lastSegment.parts[lastSegment.parts.length - 1];
+    const lastDuration = lastPart && lastPart.duration || lastSegment && lastSegment.duration;
+    if (update && lastDuration) {
+      return lastDuration * 1000;
+    } // if the playlist is unchanged since the last reload or last segment duration
+    // cannot be determined, try again after half the target duration
+
+    return (media.partTargetDuration || media.targetDuration || 10) * 500;
+  };
+  /**
+   * Load a playlist from a remote location
+   *
+   * @class PlaylistLoader
+   * @extends Stream
+   * @param {string|Object} src url or object of manifest
+   * @param {boolean} withCredentials the withCredentials xhr option
+   * @class
+   */
+
+  class PlaylistLoader extends EventTarget$1 {
+    constructor(src, vhs, options = {}) {
+      super();
+      if (!src) {
+        throw new Error('A non-empty playlist URL or object is required');
+      }
+      this.logger_ = logger('PlaylistLoader');
+      const {
+        withCredentials = false
+      } = options;
+      this.src = src;
+      this.vhs_ = vhs;
+      this.withCredentials = withCredentials;
+      this.addDateRangesToTextTrack_ = options.addDateRangesToTextTrack;
+      const vhsOptions = vhs.options_;
+      this.customTagParsers = vhsOptions && vhsOptions.customTagParsers || [];
+      this.customTagMappers = vhsOptions && vhsOptions.customTagMappers || [];
+      this.llhls = vhsOptions && vhsOptions.llhls;
+      this.dateRangesStorage_ = new DateRangesStorage(); // initialize the loader state
+
+      this.state = 'HAVE_NOTHING'; // live playlist staleness timeout
+
+      this.handleMediaupdatetimeout_ = this.handleMediaupdatetimeout_.bind(this);
+      this.on('mediaupdatetimeout', this.handleMediaupdatetimeout_);
+      this.on('loadedplaylist', this.handleLoadedPlaylist_.bind(this));
+    }
+    handleLoadedPlaylist_() {
+      const mediaPlaylist = this.media();
+      if (!mediaPlaylist) {
+        return;
+      }
+      this.dateRangesStorage_.setOffset(mediaPlaylist.segments);
+      this.dateRangesStorage_.setPendingDateRanges(mediaPlaylist.dateRanges);
+      const availableDateRanges = this.dateRangesStorage_.getDateRangesToProcess();
+      if (!availableDateRanges.length || !this.addDateRangesToTextTrack_) {
+        return;
+      }
+      this.addDateRangesToTextTrack_(availableDateRanges);
+    }
+    handleMediaupdatetimeout_() {
+      if (this.state !== 'HAVE_METADATA') {
+        // only refresh the media playlist if no other activity is going on
+        return;
+      }
+      const media = this.media();
+      let uri = resolveUrl(this.main.uri, media.uri);
+      if (this.llhls) {
+        uri = addLLHLSQueryDirectives(uri, media);
+      }
+      this.state = 'HAVE_CURRENT_METADATA';
+      this.request = this.vhs_.xhr({
+        uri,
+        withCredentials: this.withCredentials,
+        requestType: 'hls-playlist'
+      }, (error, req) => {
+        // disposed
+        if (!this.request) {
+          return;
+        }
+        if (error) {
+          return this.playlistRequestError(this.request, this.media(), 'HAVE_METADATA');
+        }
+        this.haveMetadata({
+          playlistString: this.request.responseText,
+          url: this.media().uri,
+          id: this.media().id
+        });
+      });
+    }
+    playlistRequestError(xhr, playlist, startingState) {
+      const {
+        uri,
+        id
+      } = playlist; // any in-flight request is now finished
+
+      this.request = null;
+      if (startingState) {
+        this.state = startingState;
+      }
+      this.error = {
+        playlist: this.main.playlists[id],
+        status: xhr.status,
+        message: `HLS playlist request error at URL: ${uri}.`,
+        responseText: xhr.responseText,
+        code: xhr.status >= 500 ? 4 : 2,
+        metadata: {
+          errorType: videojs.Error.HlsPlaylistRequestError
+        }
+      };
+      this.trigger('error');
+    }
+    parseManifest_({
+      url,
+      manifestString
+    }) {
+      return parseManifest({
+        onwarn: ({
+          message
+        }) => this.logger_(`m3u8-parser warn for ${url}: ${message}`),
+        oninfo: ({
+          message
+        }) => this.logger_(`m3u8-parser info for ${url}: ${message}`),
+        manifestString,
+        customTagParsers: this.customTagParsers,
+        customTagMappers: this.customTagMappers,
+        llhls: this.llhls
+      });
+    }
+    /**
+     * Update the playlist loader's state in response to a new or updated playlist.
+     *
+     * @param {string} [playlistString]
+     *        Playlist string (if playlistObject is not provided)
+     * @param {Object} [playlistObject]
+     *        Playlist object (if playlistString is not provided)
+     * @param {string} url
+     *        URL of playlist
+     * @param {string} id
+     *        ID to use for playlist
+     */
+
+    haveMetadata({
+      playlistString,
+      playlistObject,
+      url,
+      id
+    }) {
+      // any in-flight request is now finished
+      this.request = null;
+      this.state = 'HAVE_METADATA';
+      const playlist = playlistObject || this.parseManifest_({
+        url,
+        manifestString: playlistString
+      });
+      playlist.lastRequest = Date.now();
+      setupMediaPlaylist({
+        playlist,
+        uri: url,
+        id
+      }); // merge this playlist into the main manifest
+
+      const update = updateMain$1(this.main, playlist);
+      this.targetDuration = playlist.partTargetDuration || playlist.targetDuration;
+      this.pendingMedia_ = null;
+      if (update) {
+        this.main = update;
+        this.media_ = this.main.playlists[id];
+      } else {
+        this.trigger('playlistunchanged');
+      }
+      this.updateMediaUpdateTimeout_(refreshDelay(this.media(), !!update));
+      this.trigger('loadedplaylist');
+    }
+    /**
+      * Abort any outstanding work and clean up.
+      */
+
+    dispose() {
+      this.trigger('dispose');
+      this.stopRequest();
+      window.clearTimeout(this.mediaUpdateTimeout);
+      window.clearTimeout(this.finalRenditionTimeout);
+      this.dateRangesStorage_ = new DateRangesStorage();
+      this.off();
+    }
+    stopRequest() {
+      if (this.request) {
+        const oldRequest = this.request;
+        this.request = null;
+        oldRequest.onreadystatechange = null;
+        oldRequest.abort();
+      }
+    }
+    /**
+      * When called without any arguments, returns the currently
+      * active media playlist. When called with a single argument,
+      * triggers the playlist loader to asynchronously switch to the
+      * specified media playlist. Calling this method while the
+      * loader is in the HAVE_NOTHING causes an error to be emitted
+      * but otherwise has no effect.
+      *
+      * @param {Object=} playlist the parsed media playlist
+      * object to switch to
+      * @param {boolean=} shouldDelay whether we should delay the request by half target duration
+      *
+      * @return {Playlist} the current loaded media
+      */
+
+    media(playlist, shouldDelay) {
+      // getter
+      if (!playlist) {
+        return this.media_;
+      } // setter
+
+      if (this.state === 'HAVE_NOTHING') {
+        throw new Error('Cannot switch media playlist from ' + this.state);
+      } // find the playlist object if the target playlist has been
+      // specified by URI
+
+      if (typeof playlist === 'string') {
+        if (!this.main.playlists[playlist]) {
+          throw new Error('Unknown playlist URI: ' + playlist);
+        }
+        playlist = this.main.playlists[playlist];
+      }
+      window.clearTimeout(this.finalRenditionTimeout);
+      if (shouldDelay) {
+        const delay = (playlist.partTargetDuration || playlist.targetDuration) / 2 * 1000 || 5 * 1000;
+        this.finalRenditionTimeout = window.setTimeout(this.media.bind(this, playlist, false), delay);
+        return;
+      }
+      const startingState = this.state;
+      const mediaChange = !this.media_ || playlist.id !== this.media_.id;
+      const mainPlaylistRef = this.main.playlists[playlist.id]; // switch to fully loaded playlists immediately
+
+      if (mainPlaylistRef && mainPlaylistRef.endList ||
+      // handle the case of a playlist object (e.g., if using vhs-json with a resolved
+      // media playlist or, for the case of demuxed audio, a resolved audio media group)
+      playlist.endList && playlist.segments.length) {
+        // abort outstanding playlist requests
+        if (this.request) {
+          this.request.onreadystatechange = null;
+          this.request.abort();
+          this.request = null;
+        }
+        this.state = 'HAVE_METADATA';
+        this.media_ = playlist; // trigger media change if the active media has been updated
+
+        if (mediaChange) {
+          this.trigger('mediachanging');
+          if (startingState === 'HAVE_MAIN_MANIFEST') {
+            // The initial playlist was a main manifest, and the first media selected was
+            // also provided (in the form of a resolved playlist object) as part of the
+            // source object (rather than just a URL). Therefore, since the media playlist
+            // doesn't need to be requested, loadedmetadata won't trigger as part of the
+            // normal flow, and needs an explicit trigger here.
+            this.trigger('loadedmetadata');
+          } else {
+            this.trigger('mediachange');
+          }
+        }
+        return;
+      } // We update/set the timeout here so that live playlists
+      // that are not a media change will "start" the loader as expected.
+      // We expect that this function will start the media update timeout
+      // cycle again. This also prevents a playlist switch failure from
+      // causing us to stall during live.
+
+      this.updateMediaUpdateTimeout_(refreshDelay(playlist, true)); // switching to the active playlist is a no-op
+
+      if (!mediaChange) {
+        return;
+      }
+      this.state = 'SWITCHING_MEDIA'; // there is already an outstanding playlist request
+
+      if (this.request) {
+        if (playlist.resolvedUri === this.request.url) {
+          // requesting to switch to the same playlist multiple times
+          // has no effect after the first
+          return;
+        }
+        this.request.onreadystatechange = null;
+        this.request.abort();
+        this.request = null;
+      } // request the new playlist
+
+      if (this.media_) {
+        this.trigger('mediachanging');
+      }
+      this.pendingMedia_ = playlist;
+      this.request = this.vhs_.xhr({
+        uri: playlist.resolvedUri,
+        withCredentials: this.withCredentials,
+        requestType: 'hls-playlist'
+      }, (error, req) => {
+        // disposed
+        if (!this.request) {
+          return;
+        }
+        playlist.lastRequest = Date.now();
+        playlist.resolvedUri = resolveManifestRedirect(playlist.resolvedUri, req);
+        if (error) {
+          return this.playlistRequestError(this.request, playlist, startingState);
+        }
+        this.haveMetadata({
+          playlistString: req.responseText,
+          url: playlist.uri,
+          id: playlist.id
+        }); // fire loadedmetadata the first time a media playlist is loaded
+
+        if (startingState === 'HAVE_MAIN_MANIFEST') {
+          this.trigger('loadedmetadata');
+        } else {
+          this.trigger('mediachange');
+        }
+      });
+    }
+    /**
+     * pause loading of the playlist
+     */
+
+    pause() {
+      if (this.mediaUpdateTimeout) {
+        window.clearTimeout(this.mediaUpdateTimeout);
+        this.mediaUpdateTimeout = null;
+      }
+      this.stopRequest();
+      if (this.state === 'HAVE_NOTHING') {
+        // If we pause the loader before any data has been retrieved, its as if we never
+        // started, so reset to an unstarted state.
+        this.started = false;
+      } // Need to restore state now that no activity is happening
+
+      if (this.state === 'SWITCHING_MEDIA') {
+        // if the loader was in the process of switching media, it should either return to
+        // HAVE_MAIN_MANIFEST or HAVE_METADATA depending on if the loader has loaded a media
+        // playlist yet. This is determined by the existence of loader.media_
+        if (this.media_) {
+          this.state = 'HAVE_METADATA';
+        } else {
+          this.state = 'HAVE_MAIN_MANIFEST';
+        }
+      } else if (this.state === 'HAVE_CURRENT_METADATA') {
+        this.state = 'HAVE_METADATA';
+      }
+    }
+    /**
+     * start loading of the playlist
+     */
+
+    load(shouldDelay) {
+      if (this.mediaUpdateTimeout) {
+        window.clearTimeout(this.mediaUpdateTimeout);
+        this.mediaUpdateTimeout = null;
+      }
+      const media = this.media();
+      if (shouldDelay) {
+        const delay = media ? (media.partTargetDuration || media.targetDuration) / 2 * 1000 : 5 * 1000;
+        this.mediaUpdateTimeout = window.setTimeout(() => {
+          this.mediaUpdateTimeout = null;
+          this.load();
+        }, delay);
+        return;
+      }
+      if (!this.started) {
+        this.start();
+        return;
+      }
+      if (media && !media.endList) {
+        this.trigger('mediaupdatetimeout');
+      } else {
+        this.trigger('loadedplaylist');
+      }
+    }
+    updateMediaUpdateTimeout_(delay) {
+      if (this.mediaUpdateTimeout) {
+        window.clearTimeout(this.mediaUpdateTimeout);
+        this.mediaUpdateTimeout = null;
+      } // we only have use mediaupdatetimeout for live playlists.
+
+      if (!this.media() || this.media().endList) {
+        return;
+      }
+      this.mediaUpdateTimeout = window.setTimeout(() => {
+        this.mediaUpdateTimeout = null;
+        this.trigger('mediaupdatetimeout');
+        this.updateMediaUpdateTimeout_(delay);
+      }, delay);
+    }
+    /**
+     * start loading of the playlist
+     */
+
+    start() {
+      this.started = true;
+      if (typeof this.src === 'object') {
+        // in the case of an entirely constructed manifest object (meaning there's no actual
+        // manifest on a server), default the uri to the page's href
+        if (!this.src.uri) {
+          this.src.uri = window.location.href;
+        } // resolvedUri is added on internally after the initial request. Since there's no
+        // request for pre-resolved manifests, add on resolvedUri here.
+
+        this.src.resolvedUri = this.src.uri; // Since a manifest object was passed in as the source (instead of a URL), the first
+        // request can be skipped (since the top level of the manifest, at a minimum, is
+        // already available as a parsed manifest object). However, if the manifest object
+        // represents a main playlist, some media playlists may need to be resolved before
+        // the starting segment list is available. Therefore, go directly to setup of the
+        // initial playlist, and let the normal flow continue from there.
+        //
+        // Note that the call to setup is asynchronous, as other sections of VHS may assume
+        // that the first request is asynchronous.
+
+        setTimeout(() => {
+          this.setupInitialPlaylist(this.src);
+        }, 0);
+        return;
+      } // request the specified URL
+
+      this.request = this.vhs_.xhr({
+        uri: this.src,
+        withCredentials: this.withCredentials,
+        requestType: 'hls-playlist'
+      }, (error, req) => {
+        // disposed
+        if (!this.request) {
+          return;
+        } // clear the loader's request reference
+
+        this.request = null;
+        if (error) {
+          this.error = {
+            status: req.status,
+            message: `HLS playlist request error at URL: ${this.src}.`,
+            responseText: req.responseText,
+            // MEDIA_ERR_NETWORK
+            code: 2,
+            metadata: {
+              errorType: videojs.Error.HlsPlaylistRequestError
+            }
+          };
+          if (this.state === 'HAVE_NOTHING') {
+            this.started = false;
+          }
+          return this.trigger('error');
+        }
+        this.src = resolveManifestRedirect(this.src, req);
+        const manifest = this.parseManifest_({
+          manifestString: req.responseText,
+          url: this.src
+        });
+        this.setupInitialPlaylist(manifest);
+      });
+    }
+    srcUri() {
+      return typeof this.src === 'string' ? this.src : this.src.uri;
+    }
+    /**
+     * Given a manifest object that's either a main or media playlist, trigger the proper
+     * events and set the state of the playlist loader.
+     *
+     * If the manifest object represents a main playlist, `loadedplaylist` will be
+     * triggered to allow listeners to select a playlist. If none is selected, the loader
+     * will default to the first one in the playlists array.
+     *
+     * If the manifest object represents a media playlist, `loadedplaylist` will be
+     * triggered followed by `loadedmetadata`, as the only available playlist is loaded.
+     *
+     * In the case of a media playlist, a main playlist object wrapper with one playlist
+     * will be created so that all logic can handle playlists in the same fashion (as an
+     * assumed manifest object schema).
+     *
+     * @param {Object} manifest
+     *        The parsed manifest object
+     */
+
+    setupInitialPlaylist(manifest) {
+      this.state = 'HAVE_MAIN_MANIFEST';
+      if (manifest.playlists) {
+        this.main = manifest;
+        addPropertiesToMain(this.main, this.srcUri()); // If the initial main playlist has playlists wtih segments already resolved,
+        // then resolve URIs in advance, as they are usually done after a playlist request,
+        // which may not happen if the playlist is resolved.
+
+        manifest.playlists.forEach(playlist => {
+          playlist.segments = getAllSegments(playlist);
+          playlist.segments.forEach(segment => {
+            resolveSegmentUris(segment, playlist.resolvedUri);
+          });
+        });
+        this.trigger('loadedplaylist');
+        if (!this.request) {
+          // no media playlist was specifically selected so start
+          // from the first listed one
+          this.media(this.main.playlists[0]);
+        }
+        return;
+      } // In order to support media playlists passed in as vhs-json, the case where the uri
+      // is not provided as part of the manifest should be considered, and an appropriate
+      // default used.
+
+      const uri = this.srcUri() || window.location.href;
+      this.main = mainForMedia(manifest, uri);
+      this.haveMetadata({
+        playlistObject: manifest,
+        url: uri,
+        id: this.main.playlists[0].id
+      });
+      this.trigger('loadedmetadata');
+    }
+    /**
+     * Updates or deletes a preexisting pathway clone.
+     * Ensures that all playlists related to the old pathway clone are
+     * either updated or deleted.
+     *
+     * @param {Object} clone On update, the pathway clone object for the newly updated pathway clone.
+     *        On delete, the old pathway clone object to be deleted.
+     * @param {boolean} isUpdate True if the pathway is to be updated,
+     *        false if it is meant to be deleted.
+     */
+
+    updateOrDeleteClone(clone, isUpdate) {
+      const main = this.main;
+      const pathway = clone.ID;
+      let i = main.playlists.length; // Iterate backwards through the playlist so we can remove playlists if necessary.
+
+      while (i--) {
+        const p = main.playlists[i];
+        if (p.attributes['PATHWAY-ID'] === pathway) {
+          const oldPlaylistUri = p.resolvedUri;
+          const oldPlaylistId = p.id; // update the indexed playlist and add new playlists by ID and URI
+
+          if (isUpdate) {
+            const newPlaylistUri = this.createCloneURI_(p.resolvedUri, clone);
+            const newPlaylistId = createPlaylistID(pathway, newPlaylistUri);
+            const attributes = this.createCloneAttributes_(pathway, p.attributes);
+            const updatedPlaylist = this.createClonePlaylist_(p, newPlaylistId, clone, attributes);
+            main.playlists[i] = updatedPlaylist;
+            main.playlists[newPlaylistId] = updatedPlaylist;
+            main.playlists[newPlaylistUri] = updatedPlaylist;
+          } else {
+            // Remove the indexed playlist.
+            main.playlists.splice(i, 1);
+          } // Remove playlists by the old ID and URI.
+
+          delete main.playlists[oldPlaylistId];
+          delete main.playlists[oldPlaylistUri];
+        }
+      }
+      this.updateOrDeleteCloneMedia(clone, isUpdate);
+    }
+    /**
+     * Updates or deletes media data based on the pathway clone object.
+     * Due to the complexity of the media groups and playlists, in all cases
+     * we remove all of the old media groups and playlists.
+     * On updates, we then create new media groups and playlists based on the
+     * new pathway clone object.
+     *
+     * @param {Object} clone The pathway clone object for the newly updated pathway clone.
+     * @param {boolean} isUpdate True if the pathway is to be updated,
+     *        false if it is meant to be deleted.
+     */
+
+    updateOrDeleteCloneMedia(clone, isUpdate) {
+      const main = this.main;
+      const id = clone.ID;
+      ['AUDIO', 'SUBTITLES', 'CLOSED-CAPTIONS'].forEach(mediaType => {
+        if (!main.mediaGroups[mediaType] || !main.mediaGroups[mediaType][id]) {
+          return;
+        }
+        for (const groupKey in main.mediaGroups[mediaType]) {
+          // Remove all media playlists for the media group for this pathway clone.
+          if (groupKey === id) {
+            for (const labelKey in main.mediaGroups[mediaType][groupKey]) {
+              const oldMedia = main.mediaGroups[mediaType][groupKey][labelKey];
+              oldMedia.playlists.forEach((p, i) => {
+                const oldMediaPlaylist = main.playlists[p.id];
+                const oldPlaylistId = oldMediaPlaylist.id;
+                const oldPlaylistUri = oldMediaPlaylist.resolvedUri;
+                delete main.playlists[oldPlaylistId];
+                delete main.playlists[oldPlaylistUri];
+              });
+            } // Delete the old media group.
+
+            delete main.mediaGroups[mediaType][groupKey];
+          }
+        }
+      }); // Create the new media groups and playlists if there is an update.
+
+      if (isUpdate) {
+        this.createClonedMediaGroups_(clone);
+      }
+    }
+    /**
+     * Given a pathway clone object, clones all necessary playlists.
+     *
+     * @param {Object} clone The pathway clone object.
+     * @param {Object} basePlaylist The original playlist to clone from.
+     */
+
+    addClonePathway(clone, basePlaylist = {}) {
+      const main = this.main;
+      const index = main.playlists.length;
+      const uri = this.createCloneURI_(basePlaylist.resolvedUri, clone);
+      const playlistId = createPlaylistID(clone.ID, uri);
+      const attributes = this.createCloneAttributes_(clone.ID, basePlaylist.attributes);
+      const playlist = this.createClonePlaylist_(basePlaylist, playlistId, clone, attributes);
+      main.playlists[index] = playlist; // add playlist by ID and URI
+
+      main.playlists[playlistId] = playlist;
+      main.playlists[uri] = playlist;
+      this.createClonedMediaGroups_(clone);
+    }
+    /**
+     * Given a pathway clone object we create clones of all media.
+     * In this function, all necessary information and updated playlists
+     * are added to the `mediaGroup` object.
+     * Playlists are also added to the `playlists` array so the media groups
+     * will be properly linked.
+     *
+     * @param {Object} clone The pathway clone object.
+     */
+
+    createClonedMediaGroups_(clone) {
+      const id = clone.ID;
+      const baseID = clone['BASE-ID'];
+      const main = this.main;
+      ['AUDIO', 'SUBTITLES', 'CLOSED-CAPTIONS'].forEach(mediaType => {
+        // If the media type doesn't exist, or there is already a clone, skip
+        // to the next media type.
+        if (!main.mediaGroups[mediaType] || main.mediaGroups[mediaType][id]) {
+          return;
+        }
+        for (const groupKey in main.mediaGroups[mediaType]) {
+          if (groupKey === baseID) {
+            // Create the group.
+            main.mediaGroups[mediaType][id] = {};
+          } else {
+            // There is no need to iterate over label keys in this case.
+            continue;
+          }
+          for (const labelKey in main.mediaGroups[mediaType][groupKey]) {
+            const oldMedia = main.mediaGroups[mediaType][groupKey][labelKey];
+            main.mediaGroups[mediaType][id][labelKey] = _extends$1({}, oldMedia);
+            const newMedia = main.mediaGroups[mediaType][id][labelKey]; // update URIs on the media
+
+            const newUri = this.createCloneURI_(oldMedia.resolvedUri, clone);
+            newMedia.resolvedUri = newUri;
+            newMedia.uri = newUri; // Reset playlists in the new media group.
+
+            newMedia.playlists = []; // Create new playlists in the newly cloned media group.
+
+            oldMedia.playlists.forEach((p, i) => {
+              const oldMediaPlaylist = main.playlists[p.id];
+              const group = groupID(mediaType, id, labelKey);
+              const newPlaylistID = createPlaylistID(id, group); // Check to see if it already exists
+
+              if (oldMediaPlaylist && !main.playlists[newPlaylistID]) {
+                const newMediaPlaylist = this.createClonePlaylist_(oldMediaPlaylist, newPlaylistID, clone);
+                const newPlaylistUri = newMediaPlaylist.resolvedUri;
+                main.playlists[newPlaylistID] = newMediaPlaylist;
+                main.playlists[newPlaylistUri] = newMediaPlaylist;
+              }
+              newMedia.playlists[i] = this.createClonePlaylist_(p, newPlaylistID, clone);
+            });
+          }
+        }
+      });
+    }
+    /**
+     * Using the original playlist to be cloned, and the pathway clone object
+     * information, we create a new playlist.
+     *
+     * @param {Object} basePlaylist  The original playlist to be cloned from.
+     * @param {string} id The desired id of the newly cloned playlist.
+     * @param {Object} clone The pathway clone object.
+     * @param {Object} attributes An optional object to populate the `attributes` property in the playlist.
+     *
+     * @return {Object} The combined cloned playlist.
+     */
+
+    createClonePlaylist_(basePlaylist, id, clone, attributes) {
+      const uri = this.createCloneURI_(basePlaylist.resolvedUri, clone);
+      const newProps = {
+        resolvedUri: uri,
+        uri,
+        id
+      }; // Remove all segments from previous playlist in the clone.
+
+      if (basePlaylist.segments) {
+        newProps.segments = [];
+      }
+      if (attributes) {
+        newProps.attributes = attributes;
+      }
+      return merge(basePlaylist, newProps);
+    }
+    /**
+     * Generates an updated URI for a cloned pathway based on the original
+     * pathway's URI and the paramaters from the pathway clone object in the
+     * content steering server response.
+     *
+     * @param {string} baseUri URI to be updated in the cloned pathway.
+     * @param {Object} clone The pathway clone object.
+     *
+     * @return {string} The updated URI for the cloned pathway.
+     */
+
+    createCloneURI_(baseURI, clone) {
+      const uri = new URL(baseURI);
+      uri.hostname = clone['URI-REPLACEMENT'].HOST;
+      const params = clone['URI-REPLACEMENT'].PARAMS; // Add params to the cloned URL.
+
+      for (const key of Object.keys(params)) {
+        uri.searchParams.set(key, params[key]);
+      }
+      return uri.href;
+    }
+    /**
+     * Helper function to create the attributes needed for the new clone.
+     * This mainly adds the necessary media attributes.
+     *
+     * @param {string} id The pathway clone object ID.
+     * @param {Object} oldAttributes The old attributes to compare to.
+     * @return {Object} The new attributes to add to the playlist.
+     */
+
+    createCloneAttributes_(id, oldAttributes) {
+      const attributes = {
+        ['PATHWAY-ID']: id
+      };
+      ['AUDIO', 'SUBTITLES', 'CLOSED-CAPTIONS'].forEach(mediaType => {
+        if (oldAttributes[mediaType]) {
+          attributes[mediaType] = id;
+        }
+      });
+      return attributes;
+    }
+    /**
+     * Returns the key ID set from a playlist
+     *
+     * @param {playlist} playlist to fetch the key ID set from.
+     * @return a Set of 32 digit hex strings that represent the unique keyIds for that playlist.
+     */
+
+    getKeyIdSet(playlist) {
+      if (playlist.contentProtection) {
+        const keyIds = new Set();
+        for (const keysystem in playlist.contentProtection) {
+          const keyId = playlist.contentProtection[keysystem].attributes.keyId;
+          if (keyId) {
+            keyIds.add(keyId.toLowerCase());
+          }
+        }
+        return keyIds;
+      }
+    }
+  }
+
+  /**
+   * @file xhr.js
+   */
+
+  const callbackWrapper = function (request, error, response, callback) {
+    const reqResponse = request.responseType === 'arraybuffer' ? request.response : request.responseText;
+    if (!error && reqResponse) {
+      request.responseTime = Date.now();
+      request.roundTripTime = request.responseTime - request.requestTime;
+      request.bytesReceived = reqResponse.byteLength || reqResponse.length;
+      if (!request.bandwidth) {
+        request.bandwidth = Math.floor(request.bytesReceived / request.roundTripTime * 8 * 1000);
+      }
+    }
+    if (response.headers) {
+      request.responseHeaders = response.headers;
+    } // videojs.xhr now uses a specific code on the error
+    // object to signal that a request has timed out instead
+    // of setting a boolean on the request object
+
+    if (error && error.code === 'ETIMEDOUT') {
+      request.timedout = true;
+    } // videojs.xhr no longer considers status codes outside of 200 and 0
+    // (for file uris) to be errors, but the old XHR did, so emulate that
+    // behavior. Status 206 may be used in response to byterange requests.
+
+    if (!error && !request.aborted && response.statusCode !== 200 && response.statusCode !== 206 && response.statusCode !== 0) {
+      error = new Error('XHR Failed with a response of: ' + (request && (reqResponse || request.responseText)));
+    }
+    callback(error, request);
+  };
+  /**
+   * Iterates over the request hooks Set and calls them in order
+   *
+   * @param {Set} hooks the hook Set to iterate over
+   * @param {Object} options the request options to pass to the xhr wrapper
+   * @return the callback hook function return value, the modified or new options Object.
+   */
+
+  const callAllRequestHooks = (requestSet, options) => {
+    if (!requestSet || !requestSet.size) {
+      return;
+    }
+    let newOptions = options;
+    requestSet.forEach(requestCallback => {
+      newOptions = requestCallback(newOptions);
+    });
+    return newOptions;
+  };
+  /**
+   * Iterates over the response hooks Set and calls them in order.
+   *
+   * @param {Set} hooks the hook Set to iterate over
+   * @param {Object} request the xhr request object
+   * @param {Object} error the xhr error object
+   * @param {Object} response the xhr response object
+   */
+
+  const callAllResponseHooks = (responseSet, request, error, response) => {
+    if (!responseSet || !responseSet.size) {
+      return;
+    }
+    responseSet.forEach(responseCallback => {
+      responseCallback(request, error, response);
+    });
+  };
+  const xhrFactory = function () {
+    const xhr = function XhrFunction(options, callback) {
+      // Add a default timeout
+      options = merge({
+        timeout: 45e3
+      }, options); // Allow an optional user-specified function to modify the option
+      // object before we construct the xhr request
+      // TODO: Remove beforeRequest in the next major release.
+
+      const beforeRequest = XhrFunction.beforeRequest || videojs.Vhs.xhr.beforeRequest; // onRequest and onResponse hooks as a Set, at either the player or global level.
+      // TODO: new Set added here for beforeRequest alias. Remove this when beforeRequest is removed.
+
+      const _requestCallbackSet = XhrFunction._requestCallbackSet || videojs.Vhs.xhr._requestCallbackSet || new Set();
+      const _responseCallbackSet = XhrFunction._responseCallbackSet || videojs.Vhs.xhr._responseCallbackSet;
+      if (beforeRequest && typeof beforeRequest === 'function') {
+        videojs.log.warn('beforeRequest is deprecated, use onRequest instead.');
+        _requestCallbackSet.add(beforeRequest);
+      } // Use the standard videojs.xhr() method unless `videojs.Vhs.xhr` has been overriden
+      // TODO: switch back to videojs.Vhs.xhr.name === 'XhrFunction' when we drop IE11
+
+      const xhrMethod = videojs.Vhs.xhr.original === true ? videojs.xhr : videojs.Vhs.xhr; // call all registered onRequest hooks, assign new options.
+
+      const beforeRequestOptions = callAllRequestHooks(_requestCallbackSet, options); // Remove the beforeRequest function from the hooks set so stale beforeRequest functions are not called.
+
+      _requestCallbackSet.delete(beforeRequest); // xhrMethod will call XMLHttpRequest.open and XMLHttpRequest.send
+
+      const request = xhrMethod(beforeRequestOptions || options, function (error, response) {
+        // call all registered onResponse hooks
+        callAllResponseHooks(_responseCallbackSet, request, error, response);
+        return callbackWrapper(request, error, response, callback);
+      });
+      const originalAbort = request.abort;
+      request.abort = function () {
+        request.aborted = true;
+        return originalAbort.apply(request, arguments);
+      };
+      request.uri = options.uri;
+      request.requestTime = Date.now();
+      return request;
+    };
+    xhr.original = true;
+    return xhr;
+  };
+  /**
+   * Turns segment byterange into a string suitable for use in
+   * HTTP Range requests
+   *
+   * @param {Object} byterange - an object with two values defining the start and end
+   *                             of a byte-range
+   */
+
+  const byterangeStr = function (byterange) {
+    // `byterangeEnd` is one less than `offset + length` because the HTTP range
+    // header uses inclusive ranges
+    let byterangeEnd;
+    const byterangeStart = byterange.offset;
+    if (typeof byterange.offset === 'bigint' || typeof byterange.length === 'bigint') {
+      byterangeEnd = window.BigInt(byterange.offset) + window.BigInt(byterange.length) - window.BigInt(1);
+    } else {
+      byterangeEnd = byterange.offset + byterange.length - 1;
+    }
+    return 'bytes=' + byterangeStart + '-' + byterangeEnd;
+  };
+  /**
+   * Defines headers for use in the xhr request for a particular segment.
+   *
+   * @param {Object} segment - a simplified copy of the segmentInfo object
+   *                           from SegmentLoader
+   */
+
+  const segmentXhrHeaders = function (segment) {
+    const headers = {};
+    if (segment.byterange) {
+      headers.Range = byterangeStr(segment.byterange);
+    }
+    return headers;
+  };
+
+  /**
+   * @file bin-utils.js
+   */
+
+  /**
+   * convert a TimeRange to text
+   *
+   * @param {TimeRange} range the timerange to use for conversion
+   * @param {number} i the iterator on the range to convert
+   * @return {string} the range in string format
+   */
+
+  const textRange = function (range, i) {
+    return range.start(i) + '-' + range.end(i);
+  };
+  /**
+   * format a number as hex string
+   *
+   * @param {number} e The number
+   * @param {number} i the iterator
+   * @return {string} the hex formatted number as a string
+   */
+
+  const formatHexString = function (e, i) {
+    const value = e.toString(16);
+    return '00'.substring(0, 2 - value.length) + value + (i % 2 ? ' ' : '');
+  };
+  const formatAsciiString = function (e) {
+    if (e >= 0x20 && e < 0x7e) {
+      return String.fromCharCode(e);
+    }
+    return '.';
+  };
+  /**
+   * Creates an object for sending to a web worker modifying properties that are TypedArrays
+   * into a new object with seperated properties for the buffer, byteOffset, and byteLength.
+   *
+   * @param {Object} message
+   *        Object of properties and values to send to the web worker
+   * @return {Object}
+   *         Modified message with TypedArray values expanded
+   * @function createTransferableMessage
+   */
+
+  const createTransferableMessage = function (message) {
+    const transferable = {};
+    Object.keys(message).forEach(key => {
+      const value = message[key];
+      if (isArrayBufferView(value)) {
+        transferable[key] = {
+          bytes: value.buffer,
+          byteOffset: value.byteOffset,
+          byteLength: value.byteLength
+        };
+      } else {
+        transferable[key] = value;
+      }
+    });
+    return transferable;
+  };
+  /**
+   * Returns a unique string identifier for a media initialization
+   * segment.
+   *
+   * @param {Object} initSegment
+   *        the init segment object.
+   *
+   * @return {string} the generated init segment id
+   */
+
+  const initSegmentId = function (initSegment) {
+    const byterange = initSegment.byterange || {
+      length: Infinity,
+      offset: 0
+    };
+    return [byterange.length, byterange.offset, initSegment.resolvedUri].join(',');
+  };
+  /**
+   * Returns a unique string identifier for a media segment key.
+   *
+   * @param {Object} key the encryption key
+   * @return {string} the unique id for the media segment key.
+   */
+
+  const segmentKeyId = function (key) {
+    return key.resolvedUri;
+  };
+  /**
+   * utils to help dump binary data to the console
+   *
+   * @param {Array|TypedArray} data
+   *        data to dump to a string
+   *
+   * @return {string} the data as a hex string.
+   */
+
+  const hexDump = data => {
+    const bytes = Array.prototype.slice.call(data);
+    const step = 16;
+    let result = '';
+    let hex;
+    let ascii;
+    for (let j = 0; j < bytes.length / step; j++) {
+      hex = bytes.slice(j * step, j * step + step).map(formatHexString).join('');
+      ascii = bytes.slice(j * step, j * step + step).map(formatAsciiString).join('');
+      result += hex + ' ' + ascii + '\n';
+    }
+    return result;
+  };
+  const tagDump = ({
+    bytes
+  }) => hexDump(bytes);
+  const textRanges = ranges => {
+    let result = '';
+    let i;
+    for (i = 0; i < ranges.length; i++) {
+      result += textRange(ranges, i) + ' ';
+    }
+    return result;
+  };
+  var utils = /*#__PURE__*/Object.freeze({
+    __proto__: null,
+    createTransferableMessage: createTransferableMessage,
+    initSegmentId: initSegmentId,
+    segmentKeyId: segmentKeyId,
+    hexDump: hexDump,
+    tagDump: tagDump,
+    textRanges: textRanges
+  });
+
+  // TODO handle fmp4 case where the timing info is accurate and doesn't involve transmux
+  // 25% was arbitrarily chosen, and may need to be refined over time.
+
+  const SEGMENT_END_FUDGE_PERCENT = 0.25;
+  /**
+   * Converts a player time (any time that can be gotten/set from player.currentTime(),
+   * e.g., any time within player.seekable().start(0) to player.seekable().end(0)) to a
+   * program time (any time referencing the real world (e.g., EXT-X-PROGRAM-DATE-TIME)).
+   *
+   * The containing segment is required as the EXT-X-PROGRAM-DATE-TIME serves as an "anchor
+   * point" (a point where we have a mapping from program time to player time, with player
+   * time being the post transmux start of the segment).
+   *
+   * For more details, see [this doc](../../docs/program-time-from-player-time.md).
+   *
+   * @param {number} playerTime the player time
+   * @param {Object} segment the segment which contains the player time
+   * @return {Date} program time
+   */
+
+  const playerTimeToProgramTime = (playerTime, segment) => {
+    if (!segment.dateTimeObject) {
+      // Can't convert without an "anchor point" for the program time (i.e., a time that can
+      // be used to map the start of a segment with a real world time).
+      return null;
+    }
+    const transmuxerPrependedSeconds = segment.videoTimingInfo.transmuxerPrependedSeconds;
+    const transmuxedStart = segment.videoTimingInfo.transmuxedPresentationStart; // get the start of the content from before old content is prepended
+
+    const startOfSegment = transmuxedStart + transmuxerPrependedSeconds;
+    const offsetFromSegmentStart = playerTime - startOfSegment;
+    return new Date(segment.dateTimeObject.getTime() + offsetFromSegmentStart * 1000);
+  };
+  const originalSegmentVideoDuration = videoTimingInfo => {
+    return videoTimingInfo.transmuxedPresentationEnd - videoTimingInfo.transmuxedPresentationStart - videoTimingInfo.transmuxerPrependedSeconds;
+  };
+  /**
+   * Finds a segment that contains the time requested given as an ISO-8601 string. The
+   * returned segment might be an estimate or an accurate match.
+   *
+   * @param {string} programTime The ISO-8601 programTime to find a match for
+   * @param {Object} playlist A playlist object to search within
+   */
+
+  const findSegmentForProgramTime = (programTime, playlist) => {
+    // Assumptions:
+    //  - verifyProgramDateTimeTags has already been run
+    //  - live streams have been started
+    let dateTimeObject;
+    try {
+      dateTimeObject = new Date(programTime);
+    } catch (e) {
+      return null;
+    }
+    if (!playlist || !playlist.segments || playlist.segments.length === 0) {
+      return null;
+    }
+    let segment = playlist.segments[0];
+    if (dateTimeObject < new Date(segment.dateTimeObject)) {
+      // Requested time is before stream start.
+      return null;
+    }
+    for (let i = 0; i < playlist.segments.length - 1; i++) {
+      segment = playlist.segments[i];
+      const nextSegmentStart = new Date(playlist.segments[i + 1].dateTimeObject);
+      if (dateTimeObject < nextSegmentStart) {
+        break;
+      }
+    }
+    const lastSegment = playlist.segments[playlist.segments.length - 1];
+    const lastSegmentStart = lastSegment.dateTimeObject;
+    const lastSegmentDuration = lastSegment.videoTimingInfo ? originalSegmentVideoDuration(lastSegment.videoTimingInfo) : lastSegment.duration + lastSegment.duration * SEGMENT_END_FUDGE_PERCENT;
+    const lastSegmentEnd = new Date(lastSegmentStart.getTime() + lastSegmentDuration * 1000);
+    if (dateTimeObject > lastSegmentEnd) {
+      // Beyond the end of the stream, or our best guess of the end of the stream.
+      return null;
+    }
+    if (dateTimeObject > new Date(lastSegmentStart)) {
+      segment = lastSegment;
+    }
+    return {
+      segment,
+      estimatedStart: segment.videoTimingInfo ? segment.videoTimingInfo.transmuxedPresentationStart : Playlist.duration(playlist, playlist.mediaSequence + playlist.segments.indexOf(segment)),
+      // Although, given that all segments have accurate date time objects, the segment
+      // selected should be accurate, unless the video has been transmuxed at some point
+      // (determined by the presence of the videoTimingInfo object), the segment's "player
+      // time" (the start time in the player) can't be considered accurate.
+      type: segment.videoTimingInfo ? 'accurate' : 'estimate'
+    };
+  };
+  /**
+   * Finds a segment that contains the given player time(in seconds).
+   *
+   * @param {number} time The player time to find a match for
+   * @param {Object} playlist A playlist object to search within
+   */
+
+  const findSegmentForPlayerTime = (time, playlist) => {
+    // Assumptions:
+    // - there will always be a segment.duration
+    // - we can start from zero
+    // - segments are in time order
+    if (!playlist || !playlist.segments || playlist.segments.length === 0) {
+      return null;
+    }
+    let segmentEnd = 0;
+    let segment;
+    for (let i = 0; i < playlist.segments.length; i++) {
+      segment = playlist.segments[i]; // videoTimingInfo is set after the segment is downloaded and transmuxed, and
+      // should contain the most accurate values we have for the segment's player times.
+      //
+      // Use the accurate transmuxedPresentationEnd value if it is available, otherwise fall
+      // back to an estimate based on the manifest derived (inaccurate) segment.duration, to
+      // calculate an end value.
+
+      segmentEnd = segment.videoTimingInfo ? segment.videoTimingInfo.transmuxedPresentationEnd : segmentEnd + segment.duration;
+      if (time <= segmentEnd) {
+        break;
+      }
+    }
+    const lastSegment = playlist.segments[playlist.segments.length - 1];
+    if (lastSegment.videoTimingInfo && lastSegment.videoTimingInfo.transmuxedPresentationEnd < time) {
+      // The time requested is beyond the stream end.
+      return null;
+    }
+    if (time > segmentEnd) {
+      // The time is within or beyond the last segment.
+      //
+      // Check to see if the time is beyond a reasonable guess of the end of the stream.
+      if (time > segmentEnd + lastSegment.duration * SEGMENT_END_FUDGE_PERCENT) {
+        // Technically, because the duration value is only an estimate, the time may still
+        // exist in the last segment, however, there isn't enough information to make even
+        // a reasonable estimate.
+        return null;
+      }
+      segment = lastSegment;
+    }
+    return {
+      segment,
+      estimatedStart: segment.videoTimingInfo ? segment.videoTimingInfo.transmuxedPresentationStart : segmentEnd - segment.duration,
+      // Because videoTimingInfo is only set after transmux, it is the only way to get
+      // accurate timing values.
+      type: segment.videoTimingInfo ? 'accurate' : 'estimate'
+    };
+  };
+  /**
+   * Gives the offset of the comparisonTimestamp from the programTime timestamp in seconds.
+   * If the offset returned is positive, the programTime occurs after the
+   * comparisonTimestamp.
+   * If the offset is negative, the programTime occurs before the comparisonTimestamp.
+   *
+   * @param {string} comparisonTimeStamp An ISO-8601 timestamp to compare against
+   * @param {string} programTime The programTime as an ISO-8601 string
+   * @return {number} offset
+   */
+
+  const getOffsetFromTimestamp = (comparisonTimeStamp, programTime) => {
+    let segmentDateTime;
+    let programDateTime;
+    try {
+      segmentDateTime = new Date(comparisonTimeStamp);
+      programDateTime = new Date(programTime);
+    } catch (e) {// TODO handle error
+    }
+    const segmentTimeEpoch = segmentDateTime.getTime();
+    const programTimeEpoch = programDateTime.getTime();
+    return (programTimeEpoch - segmentTimeEpoch) / 1000;
+  };
+  /**
+   * Checks that all segments in this playlist have programDateTime tags.
+   *
+   * @param {Object} playlist A playlist object
+   */
+
+  const verifyProgramDateTimeTags = playlist => {
+    if (!playlist.segments || playlist.segments.length === 0) {
+      return false;
+    }
+    for (let i = 0; i < playlist.segments.length; i++) {
+      const segment = playlist.segments[i];
+      if (!segment.dateTimeObject) {
+        return false;
+      }
+    }
+    return true;
+  };
+  /**
+   * Returns the programTime of the media given a playlist and a playerTime.
+   * The playlist must have programDateTime tags for a programDateTime tag to be returned.
+   * If the segments containing the time requested have not been buffered yet, an estimate
+   * may be returned to the callback.
+   *
+   * @param {Object} args
+   * @param {Object} args.playlist A playlist object to search within
+   * @param {number} time A playerTime in seconds
+   * @param {Function} callback(err, programTime)
+   * @return {string} err.message A detailed error message
+   * @return {Object} programTime
+   * @return {number} programTime.mediaSeconds The streamTime in seconds
+   * @return {string} programTime.programDateTime The programTime as an ISO-8601 String
+   */
+
+  const getProgramTime = ({
+    playlist,
+    time = undefined,
+    callback
+  }) => {
+    if (!callback) {
+      throw new Error('getProgramTime: callback must be provided');
+    }
+    if (!playlist || time === undefined) {
+      return callback({
+        message: 'getProgramTime: playlist and time must be provided'
+      });
+    }
+    const matchedSegment = findSegmentForPlayerTime(time, playlist);
+    if (!matchedSegment) {
+      return callback({
+        message: 'valid programTime was not found'
+      });
+    }
+    if (matchedSegment.type === 'estimate') {
+      return callback({
+        message: 'Accurate programTime could not be determined.' + ' Please seek to e.seekTime and try again',
+        seekTime: matchedSegment.estimatedStart
+      });
+    }
+    const programTimeObject = {
+      mediaSeconds: time
+    };
+    const programTime = playerTimeToProgramTime(time, matchedSegment.segment);
+    if (programTime) {
+      programTimeObject.programDateTime = programTime.toISOString();
+    }
+    return callback(null, programTimeObject);
+  };
+  /**
+   * Seeks in the player to a time that matches the given programTime ISO-8601 string.
+   *
+   * @param {Object} args
+   * @param {string} args.programTime A programTime to seek to as an ISO-8601 String
+   * @param {Object} args.playlist A playlist to look within
+   * @param {number} args.retryCount The number of times to try for an accurate seek. Default is 2.
+   * @param {Function} args.seekTo A method to perform a seek
+   * @param {boolean} args.pauseAfterSeek Whether to end in a paused state after seeking. Default is true.
+   * @param {Object} args.tech The tech to seek on
+   * @param {Function} args.callback(err, newTime) A callback to return the new time to
+   * @return {string} err.message A detailed error message
+   * @return {number} newTime The exact time that was seeked to in seconds
+   */
+
+  const seekToProgramTime = ({
+    programTime,
+    playlist,
+    retryCount = 2,
+    seekTo,
+    pauseAfterSeek = true,
+    tech,
+    callback
+  }) => {
+    if (!callback) {
+      throw new Error('seekToProgramTime: callback must be provided');
+    }
+    if (typeof programTime === 'undefined' || !playlist || !seekTo) {
+      return callback({
+        message: 'seekToProgramTime: programTime, seekTo and playlist must be provided'
+      });
+    }
+    if (!playlist.endList && !tech.hasStarted_) {
+      return callback({
+        message: 'player must be playing a live stream to start buffering'
+      });
+    }
+    if (!verifyProgramDateTimeTags(playlist)) {
+      return callback({
+        message: 'programDateTime tags must be provided in the manifest ' + playlist.resolvedUri
+      });
+    }
+    const matchedSegment = findSegmentForProgramTime(programTime, playlist); // no match
+
+    if (!matchedSegment) {
+      return callback({
+        message: `${programTime} was not found in the stream`
+      });
+    }
+    const segment = matchedSegment.segment;
+    const mediaOffset = getOffsetFromTimestamp(segment.dateTimeObject, programTime);
+    if (matchedSegment.type === 'estimate') {
+      // we've run out of retries
+      if (retryCount === 0) {
+        return callback({
+          message: `${programTime} is not buffered yet. Try again`
+        });
+      }
+      seekTo(matchedSegment.estimatedStart + mediaOffset);
+      tech.one('seeked', () => {
+        seekToProgramTime({
+          programTime,
+          playlist,
+          retryCount: retryCount - 1,
+          seekTo,
+          pauseAfterSeek,
+          tech,
+          callback
+        });
+      });
+      return;
+    } // Since the segment.start value is determined from the buffered end or ending time
+    // of the prior segment, the seekToTime doesn't need to account for any transmuxer
+    // modifications.
+
+    const seekToTime = segment.start + mediaOffset;
+    const seekedCallback = () => {
+      return callback(null, tech.currentTime());
+    }; // listen for seeked event
+
+    tech.one('seeked', seekedCallback); // pause before seeking as video.js will restore this state
+
+    if (pauseAfterSeek) {
+      tech.pause();
+    }
+    seekTo(seekToTime);
+  };
+
+  // which will only happen if the request is complete.
+
+  const callbackOnCompleted = (request, cb) => {
+    if (request.readyState === 4) {
+      return cb();
+    }
+    return;
+  };
+  const containerRequest = (uri, xhr, cb) => {
+    let bytes = [];
+    let id3Offset;
+    let finished = false;
+    const endRequestAndCallback = function (err, req, type, _bytes) {
+      req.abort();
+      finished = true;
+      return cb(err, req, type, _bytes);
+    };
+    const progressListener = function (error, request) {
+      if (finished) {
+        return;
+      }
+      if (error) {
+        return endRequestAndCallback(error, request, '', bytes);
+      } // grap the new part of content that was just downloaded
+
+      const newPart = request.responseText.substring(bytes && bytes.byteLength || 0, request.responseText.length); // add that onto bytes
+
+      bytes = concatTypedArrays(bytes, stringToBytes(newPart, true));
+      id3Offset = id3Offset || getId3Offset(bytes); // we need at least 10 bytes to determine a type
+      // or we need at least two bytes after an id3Offset
+
+      if (bytes.length < 10 || id3Offset && bytes.length < id3Offset + 2) {
+        return callbackOnCompleted(request, () => endRequestAndCallback(error, request, '', bytes));
+      }
+      const type = detectContainerForBytes(bytes); // if this looks like a ts segment but we don't have enough data
+      // to see the second sync byte, wait until we have enough data
+      // before declaring it ts
+
+      if (type === 'ts' && bytes.length < 188) {
+        return callbackOnCompleted(request, () => endRequestAndCallback(error, request, '', bytes));
+      } // this may be an unsynced ts segment
+      // wait for 376 bytes before detecting no container
+
+      if (!type && bytes.length < 376) {
+        return callbackOnCompleted(request, () => endRequestAndCallback(error, request, '', bytes));
+      }
+      return endRequestAndCallback(null, request, type, bytes);
+    };
+    const options = {
+      uri,
+      beforeSend(request) {
+        // this forces the browser to pass the bytes to us unprocessed
+        request.overrideMimeType('text/plain; charset=x-user-defined');
+        request.addEventListener('progress', function ({
+          total,
+          loaded
+        }) {
+          return callbackWrapper(request, null, {
+            statusCode: request.status
+          }, progressListener);
+        });
+      }
+    };
+    const request = xhr(options, function (error, response) {
+      return callbackWrapper(request, error, response, progressListener);
+    });
+    return request;
+  };
+  const {
+    EventTarget
+  } = videojs;
+  const dashPlaylistUnchanged = function (a, b) {
+    if (!isPlaylistUnchanged(a, b)) {
+      return false;
+    } // for dash the above check will often return true in scenarios where
+    // the playlist actually has changed because mediaSequence isn't a
+    // dash thing, and we often set it to 1. So if the playlists have the same amount
+    // of segments we return true.
+    // So for dash we need to make sure that the underlying segments are different.
+    // if sidx changed then the playlists are different.
+
+    if (a.sidx && b.sidx && (a.sidx.offset !== b.sidx.offset || a.sidx.length !== b.sidx.length)) {
+      return false;
+    } else if (!a.sidx && b.sidx || a.sidx && !b.sidx) {
+      return false;
+    } // one or the other does not have segments
+    // there was a change.
+
+    if (a.segments && !b.segments || !a.segments && b.segments) {
+      return false;
+    } // neither has segments nothing changed
+
+    if (!a.segments && !b.segments) {
+      return true;
+    } // check segments themselves
+
+    for (let i = 0; i < a.segments.length; i++) {
+      const aSegment = a.segments[i];
+      const bSegment = b.segments[i]; // if uris are different between segments there was a change
+
+      if (aSegment.uri !== bSegment.uri) {
+        return false;
+      } // neither segment has a byterange, there will be no byterange change.
+
+      if (!aSegment.byterange && !bSegment.byterange) {
+        continue;
+      }
+      const aByterange = aSegment.byterange;
+      const bByterange = bSegment.byterange; // if byterange only exists on one of the segments, there was a change.
+
+      if (aByterange && !bByterange || !aByterange && bByterange) {
+        return false;
+      } // if both segments have byterange with different offsets, there was a change.
+
+      if (aByterange.offset !== bByterange.offset || aByterange.length !== bByterange.length) {
+        return false;
+      }
+    } // if everything was the same with segments, this is the same playlist.
+
+    return true;
+  };
+  /**
+   * Use the representation IDs from the mpd object to create groupIDs, the NAME is set to mandatory representation
+   * ID in the parser. This allows for continuous playout across periods with the same representation IDs
+   * (continuous periods as defined in DASH-IF 3.2.12). This is assumed in the mpd-parser as well. If we want to support
+   * periods without continuous playback this function may need modification as well as the parser.
+   */
+
+  const dashGroupId = (type, group, label, playlist) => {
+    // If the manifest somehow does not have an ID (non-dash compliant), use the label.
+    const playlistId = playlist.attributes.NAME || label;
+    return `placeholder-uri-${type}-${group}-${playlistId}`;
+  };
+  /**
+   * Parses the main XML string and updates playlist URI references.
+   *
+   * @param {Object} config
+   *        Object of arguments
+   * @param {string} config.mainXml
+   *        The mpd XML
+   * @param {string} config.srcUrl
+   *        The mpd URL
+   * @param {Date} config.clientOffset
+   *         A time difference between server and client
+   * @param {Object} config.sidxMapping
+   *        SIDX mappings for moof/mdat URIs and byte ranges
+   * @return {Object}
+   *         The parsed mpd manifest object
+   */
+
+  const parseMainXml = ({
+    mainXml,
+    srcUrl,
+    clientOffset,
+    sidxMapping,
+    previousManifest
+  }) => {
+    const manifest = parse(mainXml, {
+      manifestUri: srcUrl,
+      clientOffset,
+      sidxMapping,
+      previousManifest
+    });
+    addPropertiesToMain(manifest, srcUrl, dashGroupId);
+    return manifest;
+  };
+  /**
+   * Removes any mediaGroup labels that no longer exist in the newMain
+   *
+   * @param {Object} update
+   *         The previous mpd object being updated
+   * @param {Object} newMain
+   *         The new mpd object
+   */
+
+  const removeOldMediaGroupLabels = (update, newMain) => {
+    forEachMediaGroup(update, (properties, type, group, label) => {
+      if (!(label in newMain.mediaGroups[type][group])) {
+        delete update.mediaGroups[type][group][label];
+      }
+    });
+  };
+  /**
+   * Returns a new main manifest that is the result of merging an updated main manifest
+   * into the original version.
+   *
+   * @param {Object} oldMain
+   *        The old parsed mpd object
+   * @param {Object} newMain
+   *        The updated parsed mpd object
+   * @return {Object}
+   *         A new object representing the original main manifest with the updated media
+   *         playlists merged in
+   */
+
+  const updateMain = (oldMain, newMain, sidxMapping) => {
+    let noChanges = true;
+    let update = merge(oldMain, {
+      // These are top level properties that can be updated
+      duration: newMain.duration,
+      minimumUpdatePeriod: newMain.minimumUpdatePeriod,
+      timelineStarts: newMain.timelineStarts
+    }); // First update the playlists in playlist list
+
+    for (let i = 0; i < newMain.playlists.length; i++) {
+      const playlist = newMain.playlists[i];
+      if (playlist.sidx) {
+        const sidxKey = generateSidxKey(playlist.sidx); // add sidx segments to the playlist if we have all the sidx info already
+
+        if (sidxMapping && sidxMapping[sidxKey] && sidxMapping[sidxKey].sidx) {
+          addSidxSegmentsToPlaylist$1(playlist, sidxMapping[sidxKey].sidx, playlist.sidx.resolvedUri);
+        }
+      }
+      const playlistUpdate = updateMain$1(update, playlist, dashPlaylistUnchanged);
+      if (playlistUpdate) {
+        update = playlistUpdate;
+        noChanges = false;
+      }
+    } // Then update media group playlists
+
+    forEachMediaGroup(newMain, (properties, type, group, label) => {
+      if (properties.playlists && properties.playlists.length) {
+        const id = properties.playlists[0].id;
+        const playlistUpdate = updateMain$1(update, properties.playlists[0], dashPlaylistUnchanged);
+        if (playlistUpdate) {
+          update = playlistUpdate; // add new mediaGroup label if it doesn't exist and assign the new mediaGroup.
+
+          if (!(label in update.mediaGroups[type][group])) {
+            update.mediaGroups[type][group][label] = properties;
+          } // update the playlist reference within media groups
+
+          update.mediaGroups[type][group][label].playlists[0] = update.playlists[id];
+          noChanges = false;
+        }
+      }
+    }); // remove mediaGroup labels and references that no longer exist in the newMain
+
+    removeOldMediaGroupLabels(update, newMain);
+    if (newMain.minimumUpdatePeriod !== oldMain.minimumUpdatePeriod) {
+      noChanges = false;
+    }
+    if (noChanges) {
+      return null;
+    }
+    return update;
+  }; // SIDX should be equivalent if the URI and byteranges of the SIDX match.
+  // If the SIDXs have maps, the two maps should match,
+  // both `a` and `b` missing SIDXs is considered matching.
+  // If `a` or `b` but not both have a map, they aren't matching.
+
+  const equivalentSidx = (a, b) => {
+    const neitherMap = Boolean(!a.map && !b.map);
+    const equivalentMap = neitherMap || Boolean(a.map && b.map && a.map.byterange.offset === b.map.byterange.offset && a.map.byterange.length === b.map.byterange.length);
+    return equivalentMap && a.uri === b.uri && a.byterange.offset === b.byterange.offset && a.byterange.length === b.byterange.length;
+  }; // exported for testing
+
+  const compareSidxEntry = (playlists, oldSidxMapping) => {
+    const newSidxMapping = {};
+    for (const id in playlists) {
+      const playlist = playlists[id];
+      const currentSidxInfo = playlist.sidx;
+      if (currentSidxInfo) {
+        const key = generateSidxKey(currentSidxInfo);
+        if (!oldSidxMapping[key]) {
+          break;
+        }
+        const savedSidxInfo = oldSidxMapping[key].sidxInfo;
+        if (equivalentSidx(savedSidxInfo, currentSidxInfo)) {
+          newSidxMapping[key] = oldSidxMapping[key];
+        }
+      }
+    }
+    return newSidxMapping;
+  };
+  /**
+   *  A function that filters out changed items as they need to be requested separately.
+   *
+   *  The method is exported for testing
+   *
+   *  @param {Object} main the parsed mpd XML returned via mpd-parser
+   *  @param {Object} oldSidxMapping the SIDX to compare against
+   */
+
+  const filterChangedSidxMappings = (main, oldSidxMapping) => {
+    const videoSidx = compareSidxEntry(main.playlists, oldSidxMapping);
+    let mediaGroupSidx = videoSidx;
+    forEachMediaGroup(main, (properties, mediaType, groupKey, labelKey) => {
+      if (properties.playlists && properties.playlists.length) {
+        const playlists = properties.playlists;
+        mediaGroupSidx = merge(mediaGroupSidx, compareSidxEntry(playlists, oldSidxMapping));
+      }
+    });
+    return mediaGroupSidx;
+  };
+  class DashPlaylistLoader extends EventTarget {
+    // DashPlaylistLoader must accept either a src url or a playlist because subsequent
+    // playlist loader setups from media groups will expect to be able to pass a playlist
+    // (since there aren't external URLs to media playlists with DASH)
+    constructor(srcUrlOrPlaylist, vhs, options = {}, mainPlaylistLoader) {
+      super();
+      this.mainPlaylistLoader_ = mainPlaylistLoader || this;
+      if (!mainPlaylistLoader) {
+        this.isMain_ = true;
+      }
+      const {
+        withCredentials = false
+      } = options;
+      this.vhs_ = vhs;
+      this.withCredentials = withCredentials;
+      this.addMetadataToTextTrack = options.addMetadataToTextTrack;
+      if (!srcUrlOrPlaylist) {
+        throw new Error('A non-empty playlist URL or object is required');
+      } // event naming?
+
+      this.on('minimumUpdatePeriod', () => {
+        this.refreshXml_();
+      }); // live playlist staleness timeout
+
+      this.on('mediaupdatetimeout', () => {
+        this.refreshMedia_(this.media().id);
+      });
+      this.state = 'HAVE_NOTHING';
+      this.loadedPlaylists_ = {};
+      this.logger_ = logger('DashPlaylistLoader'); // initialize the loader state
+      // The mainPlaylistLoader will be created with a string
+
+      if (this.isMain_) {
+        this.mainPlaylistLoader_.srcUrl = srcUrlOrPlaylist; // TODO: reset sidxMapping between period changes
+        // once multi-period is refactored
+
+        this.mainPlaylistLoader_.sidxMapping_ = {};
+      } else {
+        this.childPlaylist_ = srcUrlOrPlaylist;
+      }
+    }
+    requestErrored_(err, request, startingState) {
+      // disposed
+      if (!this.request) {
+        return true;
+      } // pending request is cleared
+
+      this.request = null;
+      if (err) {
+        // use the provided error object or create one
+        // based on the request/response
+        this.error = typeof err === 'object' && !(err instanceof Error) ? err : {
+          status: request.status,
+          message: 'DASH request error at URL: ' + request.uri,
+          response: request.response,
+          // MEDIA_ERR_NETWORK
+          code: 2,
+          metadata: err.metadata
+        };
+        if (startingState) {
+          this.state = startingState;
+        }
+        this.trigger('error');
+        return true;
+      }
+    }
+    /**
+     * Verify that the container of the sidx segment can be parsed
+     * and if it can, get and parse that segment.
+     */
+
+    addSidxSegments_(playlist, startingState, cb) {
+      const sidxKey = playlist.sidx && generateSidxKey(playlist.sidx); // playlist lacks sidx or sidx segments were added to this playlist already.
+
+      if (!playlist.sidx || !sidxKey || this.mainPlaylistLoader_.sidxMapping_[sidxKey]) {
+        // keep this function async
+        this.mediaRequest_ = window.setTimeout(() => cb(false), 0);
+        return;
+      } // resolve the segment URL relative to the playlist
+
+      const uri = resolveManifestRedirect(playlist.sidx.resolvedUri);
+      const fin = (err, request) => {
+        // TODO: add error metdata here once we create an error type in video.js
+        if (this.requestErrored_(err, request, startingState)) {
+          return;
+        }
+        const sidxMapping = this.mainPlaylistLoader_.sidxMapping_;
+        let sidx;
+        try {
+          sidx = parseSidx_1(toUint8(request.response).subarray(8));
+        } catch (e) {
+          e.metadata = {
+            errorType: videojs.Error.DashManifestSidxParsingError
+          }; // sidx parsing failed.
+
+          this.requestErrored_(e, request, startingState);
+          return;
+        }
+        sidxMapping[sidxKey] = {
+          sidxInfo: playlist.sidx,
+          sidx
+        };
+        addSidxSegmentsToPlaylist$1(playlist, sidx, playlist.sidx.resolvedUri);
+        return cb(true);
+      };
+      this.request = containerRequest(uri, this.vhs_.xhr, (err, request, container, bytes) => {
+        if (err) {
+          return fin(err, request);
+        }
+        if (!container || container !== 'mp4') {
+          const sidxContainer = container || 'unknown';
+          return fin({
+            status: request.status,
+            message: `Unsupported ${sidxContainer} container type for sidx segment at URL: ${uri}`,
+            // response is just bytes in this case
+            // but we really don't want to return that.
+            response: '',
+            playlist,
+            internal: true,
+            playlistExclusionDuration: Infinity,
+            // MEDIA_ERR_NETWORK
+            code: 2,
+            metadata: {
+              errorType: videojs.Error.UnsupportedSidxContainer,
+              sidxContainer
+            }
+          }, request);
+        } // if we already downloaded the sidx bytes in the container request, use them
+
+        const {
+          offset,
+          length
+        } = playlist.sidx.byterange;
+        if (bytes.length >= length + offset) {
+          return fin(err, {
+            response: bytes.subarray(offset, offset + length),
+            status: request.status,
+            uri: request.uri
+          });
+        } // otherwise request sidx bytes
+
+        this.request = this.vhs_.xhr({
+          uri,
+          responseType: 'arraybuffer',
+          headers: segmentXhrHeaders({
+            byterange: playlist.sidx.byterange
+          })
+        }, fin);
+      });
+    }
+    dispose() {
+      this.trigger('dispose');
+      this.stopRequest();
+      this.loadedPlaylists_ = {};
+      window.clearTimeout(this.minimumUpdatePeriodTimeout_);
+      window.clearTimeout(this.mediaRequest_);
+      window.clearTimeout(this.mediaUpdateTimeout);
+      this.mediaUpdateTimeout = null;
+      this.mediaRequest_ = null;
+      this.minimumUpdatePeriodTimeout_ = null;
+      if (this.mainPlaylistLoader_.createMupOnMedia_) {
+        this.off('loadedmetadata', this.mainPlaylistLoader_.createMupOnMedia_);
+        this.mainPlaylistLoader_.createMupOnMedia_ = null;
+      }
+      this.off();
+    }
+    hasPendingRequest() {
+      return this.request || this.mediaRequest_;
+    }
+    stopRequest() {
+      if (this.request) {
+        const oldRequest = this.request;
+        this.request = null;
+        oldRequest.onreadystatechange = null;
+        oldRequest.abort();
+      }
+    }
+    media(playlist) {
+      // getter
+      if (!playlist) {
+        return this.media_;
+      } // setter
+
+      if (this.state === 'HAVE_NOTHING') {
+        throw new Error('Cannot switch media playlist from ' + this.state);
+      }
+      const startingState = this.state; // find the playlist object if the target playlist has been specified by URI
+
+      if (typeof playlist === 'string') {
+        if (!this.mainPlaylistLoader_.main.playlists[playlist]) {
+          throw new Error('Unknown playlist URI: ' + playlist);
+        }
+        playlist = this.mainPlaylistLoader_.main.playlists[playlist];
+      }
+      const mediaChange = !this.media_ || playlist.id !== this.media_.id; // switch to previously loaded playlists immediately
+
+      if (mediaChange && this.loadedPlaylists_[playlist.id] && this.loadedPlaylists_[playlist.id].endList) {
+        this.state = 'HAVE_METADATA';
+        this.media_ = playlist; // trigger media change if the active media has been updated
+
+        if (mediaChange) {
+          this.trigger('mediachanging');
+          this.trigger('mediachange');
+        }
+        return;
+      } // switching to the active playlist is a no-op
+
+      if (!mediaChange) {
+        return;
+      } // switching from an already loaded playlist
+
+      if (this.media_) {
+        this.trigger('mediachanging');
+      }
+      this.addSidxSegments_(playlist, startingState, sidxChanged => {
+        // everything is ready just continue to haveMetadata
+        this.haveMetadata({
+          startingState,
+          playlist
+        });
+      });
+    }
+    haveMetadata({
+      startingState,
+      playlist
+    }) {
+      this.state = 'HAVE_METADATA';
+      this.loadedPlaylists_[playlist.id] = playlist;
+      this.mediaRequest_ = null; // This will trigger loadedplaylist
+
+      this.refreshMedia_(playlist.id); // fire loadedmetadata the first time a media playlist is loaded
+      // to resolve setup of media groups
+
+      if (startingState === 'HAVE_MAIN_MANIFEST') {
+        this.trigger('loadedmetadata');
+      } else {
+        // trigger media change if the active media has been updated
+        this.trigger('mediachange');
+      }
+    }
+    pause() {
+      if (this.mainPlaylistLoader_.createMupOnMedia_) {
+        this.off('loadedmetadata', this.mainPlaylistLoader_.createMupOnMedia_);
+        this.mainPlaylistLoader_.createMupOnMedia_ = null;
+      }
+      this.stopRequest();
+      window.clearTimeout(this.mediaUpdateTimeout);
+      this.mediaUpdateTimeout = null;
+      if (this.isMain_) {
+        window.clearTimeout(this.mainPlaylistLoader_.minimumUpdatePeriodTimeout_);
+        this.mainPlaylistLoader_.minimumUpdatePeriodTimeout_ = null;
+      }
+      if (this.state === 'HAVE_NOTHING') {
+        // If we pause the loader before any data has been retrieved, its as if we never
+        // started, so reset to an unstarted state.
+        this.started = false;
+      }
+    }
+    load(isFinalRendition) {
+      window.clearTimeout(this.mediaUpdateTimeout);
+      this.mediaUpdateTimeout = null;
+      const media = this.media();
+      if (isFinalRendition) {
+        const delay = media ? media.targetDuration / 2 * 1000 : 5 * 1000;
+        this.mediaUpdateTimeout = window.setTimeout(() => this.load(), delay);
+        return;
+      } // because the playlists are internal to the manifest, load should either load the
+      // main manifest, or do nothing but trigger an event
+
+      if (!this.started) {
+        this.start();
+        return;
+      }
+      if (media && !media.endList) {
+        // Check to see if this is the main loader and the MUP was cleared (this happens
+        // when the loader was paused). `media` should be set at this point since one is always
+        // set during `start()`.
+        if (this.isMain_ && !this.minimumUpdatePeriodTimeout_) {
+          // Trigger minimumUpdatePeriod to refresh the main manifest
+          this.trigger('minimumUpdatePeriod'); // Since there was no prior minimumUpdatePeriodTimeout it should be recreated
+
+          this.updateMinimumUpdatePeriodTimeout_();
+        }
+        this.trigger('mediaupdatetimeout');
+      } else {
+        this.trigger('loadedplaylist');
+      }
+    }
+    start() {
+      this.started = true; // We don't need to request the main manifest again
+      // Call this asynchronously to match the xhr request behavior below
+
+      if (!this.isMain_) {
+        this.mediaRequest_ = window.setTimeout(() => this.haveMain_(), 0);
+        return;
+      }
+      this.requestMain_((req, mainChanged) => {
+        this.haveMain_();
+        if (!this.hasPendingRequest() && !this.media_) {
+          this.media(this.mainPlaylistLoader_.main.playlists[0]);
+        }
+      });
+    }
+    requestMain_(cb) {
+      this.request = this.vhs_.xhr({
+        uri: this.mainPlaylistLoader_.srcUrl,
+        withCredentials: this.withCredentials,
+        requestType: 'dash-manifest'
+      }, (error, req) => {
+        if (this.requestErrored_(error, req)) {
+          if (this.state === 'HAVE_NOTHING') {
+            this.started = false;
+          }
+          return;
+        }
+        const mainChanged = req.responseText !== this.mainPlaylistLoader_.mainXml_;
+        this.mainPlaylistLoader_.mainXml_ = req.responseText;
+        if (req.responseHeaders && req.responseHeaders.date) {
+          this.mainLoaded_ = Date.parse(req.responseHeaders.date);
+        } else {
+          this.mainLoaded_ = Date.now();
+        }
+        this.mainPlaylistLoader_.srcUrl = resolveManifestRedirect(this.mainPlaylistLoader_.srcUrl, req);
+        if (mainChanged) {
+          this.handleMain_();
+          this.syncClientServerClock_(() => {
+            return cb(req, mainChanged);
+          });
+          return;
+        }
+        return cb(req, mainChanged);
+      });
+    }
+    /**
+     * Parses the main xml for UTCTiming node to sync the client clock to the server
+     * clock. If the UTCTiming node requires a HEAD or GET request, that request is made.
+     *
+     * @param {Function} done
+     *        Function to call when clock sync has completed
+     */
+
+    syncClientServerClock_(done) {
+      const utcTiming = parseUTCTiming(this.mainPlaylistLoader_.mainXml_); // No UTCTiming element found in the mpd. Use Date header from mpd request as the
+      // server clock
+
+      if (utcTiming === null) {
+        this.mainPlaylistLoader_.clientOffset_ = this.mainLoaded_ - Date.now();
+        return done();
+      }
+      if (utcTiming.method === 'DIRECT') {
+        this.mainPlaylistLoader_.clientOffset_ = utcTiming.value - Date.now();
+        return done();
+      }
+      this.request = this.vhs_.xhr({
+        uri: resolveUrl(this.mainPlaylistLoader_.srcUrl, utcTiming.value),
+        method: utcTiming.method,
+        withCredentials: this.withCredentials,
+        requestType: 'dash-clock-sync'
+      }, (error, req) => {
+        // disposed
+        if (!this.request) {
+          return;
+        }
+        if (error) {
+          // sync request failed, fall back to using date header from mpd
+          // TODO: log warning
+          this.mainPlaylistLoader_.clientOffset_ = this.mainLoaded_ - Date.now();
+          return done();
+        }
+        let serverTime;
+        if (utcTiming.method === 'HEAD') {
+          if (!req.responseHeaders || !req.responseHeaders.date) {
+            // expected date header not preset, fall back to using date header from mpd
+            // TODO: log warning
+            serverTime = this.mainLoaded_;
+          } else {
+            serverTime = Date.parse(req.responseHeaders.date);
+          }
+        } else {
+          serverTime = Date.parse(req.responseText);
+        }
+        this.mainPlaylistLoader_.clientOffset_ = serverTime - Date.now();
+        done();
+      });
+    }
+    haveMain_() {
+      this.state = 'HAVE_MAIN_MANIFEST';
+      if (this.isMain_) {
+        // We have the main playlist at this point, so
+        // trigger this to allow PlaylistController
+        // to make an initial playlist selection
+        this.trigger('loadedplaylist');
+      } else if (!this.media_) {
+        // no media playlist was specifically selected so select
+        // the one the child playlist loader was created with
+        this.media(this.childPlaylist_);
+      }
+    }
+    handleMain_() {
+      // clear media request
+      this.mediaRequest_ = null;
+      const oldMain = this.mainPlaylistLoader_.main;
+      let newMain = parseMainXml({
+        mainXml: this.mainPlaylistLoader_.mainXml_,
+        srcUrl: this.mainPlaylistLoader_.srcUrl,
+        clientOffset: this.mainPlaylistLoader_.clientOffset_,
+        sidxMapping: this.mainPlaylistLoader_.sidxMapping_,
+        previousManifest: oldMain
+      }); // if we have an old main to compare the new main against
+
+      if (oldMain) {
+        newMain = updateMain(oldMain, newMain, this.mainPlaylistLoader_.sidxMapping_);
+      } // only update main if we have a new main
+
+      this.mainPlaylistLoader_.main = newMain ? newMain : oldMain;
+      const location = this.mainPlaylistLoader_.main.locations && this.mainPlaylistLoader_.main.locations[0];
+      if (location && location !== this.mainPlaylistLoader_.srcUrl) {
+        this.mainPlaylistLoader_.srcUrl = location;
+      }
+      if (!oldMain || newMain && newMain.minimumUpdatePeriod !== oldMain.minimumUpdatePeriod) {
+        this.updateMinimumUpdatePeriodTimeout_();
+      }
+      this.addEventStreamToMetadataTrack_(newMain);
+      return Boolean(newMain);
+    }
+    updateMinimumUpdatePeriodTimeout_() {
+      const mpl = this.mainPlaylistLoader_; // cancel any pending creation of mup on media
+      // a new one will be added if needed.
+
+      if (mpl.createMupOnMedia_) {
+        mpl.off('loadedmetadata', mpl.createMupOnMedia_);
+        mpl.createMupOnMedia_ = null;
+      } // clear any pending timeouts
+
+      if (mpl.minimumUpdatePeriodTimeout_) {
+        window.clearTimeout(mpl.minimumUpdatePeriodTimeout_);
+        mpl.minimumUpdatePeriodTimeout_ = null;
+      }
+      let mup = mpl.main && mpl.main.minimumUpdatePeriod; // If the minimumUpdatePeriod has a value of 0, that indicates that the current
+      // MPD has no future validity, so a new one will need to be acquired when new
+      // media segments are to be made available. Thus, we use the target duration
+      // in this case
+
+      if (mup === 0) {
+        if (mpl.media()) {
+          mup = mpl.media().targetDuration * 1000;
+        } else {
+          mpl.createMupOnMedia_ = mpl.updateMinimumUpdatePeriodTimeout_;
+          mpl.one('loadedmetadata', mpl.createMupOnMedia_);
+        }
+      } // if minimumUpdatePeriod is invalid or <= zero, which
+      // can happen when a live video becomes VOD. skip timeout
+      // creation.
+
+      if (typeof mup !== 'number' || mup <= 0) {
+        if (mup < 0) {
+          this.logger_(`found invalid minimumUpdatePeriod of ${mup}, not setting a timeout`);
+        }
+        return;
+      }
+      this.createMUPTimeout_(mup);
+    }
+    createMUPTimeout_(mup) {
+      const mpl = this.mainPlaylistLoader_;
+      mpl.minimumUpdatePeriodTimeout_ = window.setTimeout(() => {
+        mpl.minimumUpdatePeriodTimeout_ = null;
+        mpl.trigger('minimumUpdatePeriod');
+        mpl.createMUPTimeout_(mup);
+      }, mup);
+    }
+    /**
+     * Sends request to refresh the main xml and updates the parsed main manifest
+     */
+
+    refreshXml_() {
+      this.requestMain_((req, mainChanged) => {
+        if (!mainChanged) {
+          return;
+        }
+        if (this.media_) {
+          this.media_ = this.mainPlaylistLoader_.main.playlists[this.media_.id];
+        } // This will filter out updated sidx info from the mapping
+
+        this.mainPlaylistLoader_.sidxMapping_ = filterChangedSidxMappings(this.mainPlaylistLoader_.main, this.mainPlaylistLoader_.sidxMapping_);
+        this.addSidxSegments_(this.media(), this.state, sidxChanged => {
+          // TODO: do we need to reload the current playlist?
+          this.refreshMedia_(this.media().id);
+        });
+      });
+    }
+    /**
+     * Refreshes the media playlist by re-parsing the main xml and updating playlist
+     * references. If this is an alternate loader, the updated parsed manifest is retrieved
+     * from the main loader.
+     */
+
+    refreshMedia_(mediaID) {
+      if (!mediaID) {
+        throw new Error('refreshMedia_ must take a media id');
+      } // for main we have to reparse the main xml
+      // to re-create segments based on current timing values
+      // which may change media. We only skip updating the main manifest
+      // if this is the first time this.media_ is being set.
+      // as main was just parsed in that case.
+
+      if (this.media_ && this.isMain_) {
+        this.handleMain_();
+      }
+      const playlists = this.mainPlaylistLoader_.main.playlists;
+      const mediaChanged = !this.media_ || this.media_ !== playlists[mediaID];
+      if (mediaChanged) {
+        this.media_ = playlists[mediaID];
+      } else {
+        this.trigger('playlistunchanged');
+      }
+      if (!this.mediaUpdateTimeout) {
+        const createMediaUpdateTimeout = () => {
+          if (this.media().endList) {
+            return;
+          }
+          this.mediaUpdateTimeout = window.setTimeout(() => {
+            this.trigger('mediaupdatetimeout');
+            createMediaUpdateTimeout();
+          }, refreshDelay(this.media(), Boolean(mediaChanged)));
+        };
+        createMediaUpdateTimeout();
+      }
+      this.trigger('loadedplaylist');
+    }
+    /**
+     * Takes eventstream data from a parsed DASH manifest and adds it to the metadata text track.
+     *
+     * @param {manifest} newMain the newly parsed manifest
+     */
+
+    addEventStreamToMetadataTrack_(newMain) {
+      // Only add new event stream metadata if we have a new manifest.
+      if (newMain && this.mainPlaylistLoader_.main.eventStream) {
+        // convert EventStream to ID3-like data.
+        const metadataArray = this.mainPlaylistLoader_.main.eventStream.map(eventStreamNode => {
+          return {
+            cueTime: eventStreamNode.start,
+            frames: [{
+              data: eventStreamNode.messageData
+            }]
+          };
+        });
+        this.addMetadataToTextTrack('EventStream', metadataArray, this.mainPlaylistLoader_.main.duration);
+      }
+    }
+    /**
+     * Returns the key ID set from a playlist
+     *
+     * @param {playlist} playlist to fetch the key ID set from.
+     * @return a Set of 32 digit hex strings that represent the unique keyIds for that playlist.
+     */
+
+    getKeyIdSet(playlist) {
+      if (playlist.contentProtection) {
+        const keyIds = new Set();
+        for (const keysystem in playlist.contentProtection) {
+          const defaultKID = playlist.contentProtection[keysystem].attributes['cenc:default_KID'];
+          if (defaultKID) {
+            // DASH keyIds are separated by dashes.
+            keyIds.add(defaultKID.replace(/-/g, '').toLowerCase());
+          }
+        }
+        return keyIds;
+      }
+    }
+  }
+  var Config = {
+    GOAL_BUFFER_LENGTH: 30,
+    MAX_GOAL_BUFFER_LENGTH: 60,
+    BACK_BUFFER_LENGTH: 30,
+    GOAL_BUFFER_LENGTH_RATE: 1,
+    // 0.5 MB/s
+    INITIAL_BANDWIDTH: 4194304,
+    // A fudge factor to apply to advertised playlist bitrates to account for
+    // temporary flucations in client bandwidth
+    BANDWIDTH_VARIANCE: 1.2,
+    // How much of the buffer must be filled before we consider upswitching
+    BUFFER_LOW_WATER_LINE: 0,
+    MAX_BUFFER_LOW_WATER_LINE: 30,
+    // TODO: Remove this when experimentalBufferBasedABR is removed
+    EXPERIMENTAL_MAX_BUFFER_LOW_WATER_LINE: 16,
+    BUFFER_LOW_WATER_LINE_RATE: 1,
+    // If the buffer is greater than the high water line, we won't switch down
+    BUFFER_HIGH_WATER_LINE: 30
+  };
+  const stringToArrayBuffer = string => {
+    const view = new Uint8Array(new ArrayBuffer(string.length));
+    for (let i = 0; i < string.length; i++) {
+      view[i] = string.charCodeAt(i);
+    }
+    return view.buffer;
+  };
+
+  /* global Blob, BlobBuilder, Worker */
+  // unify worker interface
+  const browserWorkerPolyFill = function (workerObj) {
+    // node only supports on/off
+    workerObj.on = workerObj.addEventListener;
+    workerObj.off = workerObj.removeEventListener;
+    return workerObj;
+  };
+  const createObjectURL = function (str) {
+    try {
+      return URL.createObjectURL(new Blob([str], {
+        type: 'application/javascript'
+      }));
+    } catch (e) {
+      const blob = new BlobBuilder();
+      blob.append(str);
+      return URL.createObjectURL(blob.getBlob());
+    }
+  };
+  const factory = function (code) {
+    return function () {
+      const objectUrl = createObjectURL(code);
+      const worker = browserWorkerPolyFill(new Worker(objectUrl));
+      worker.objURL = objectUrl;
+      const terminate = worker.terminate;
+      worker.on = worker.addEventListener;
+      worker.off = worker.removeEventListener;
+      worker.terminate = function () {
+        URL.revokeObjectURL(objectUrl);
+        return terminate.call(this);
+      };
+      return worker;
+    };
+  };
+  const transform = function (code) {
+    return `var browserWorkerPolyFill = ${browserWorkerPolyFill.toString()};\n` + 'browserWorkerPolyFill(self);\n' + code;
+  };
+  const getWorkerString = function (fn) {
+    return fn.toString().replace(/^function.+?{/, '').slice(0, -1);
+  };
+
+  /* rollup-plugin-worker-factory start for worker!/home/runner/work/http-streaming/http-streaming/src/transmuxer-worker.js */
+  const workerCode$1 = transform(getWorkerString(function () {
+    var commonjsGlobal = typeof globalThis !== 'undefined' ? globalThis : typeof window !== 'undefined' ? window : typeof global !== 'undefined' ? global : typeof self !== 'undefined' ? self : {};
+    /**
+     * mux.js
+     *
+     * Copyright (c) Brightcove
+     * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE
+     *
+     * A lightweight readable stream implemention that handles event dispatching.
+     * Objects that inherit from streams should call init in their constructors.
+     */
+
+    var Stream$8 = function () {
+      this.init = function () {
+        var listeners = {};
+        /**
+         * Add a listener for a specified event type.
+         * @param type {string} the event name
+         * @param listener {function} the callback to be invoked when an event of
+         * the specified type occurs
+         */
+
+        this.on = function (type, listener) {
+          if (!listeners[type]) {
+            listeners[type] = [];
+          }
+          listeners[type] = listeners[type].concat(listener);
+        };
+        /**
+         * Remove a listener for a specified event type.
+         * @param type {string} the event name
+         * @param listener {function} a function previously registered for this
+         * type of event through `on`
+         */
+
+        this.off = function (type, listener) {
+          var index;
+          if (!listeners[type]) {
+            return false;
+          }
+          index = listeners[type].indexOf(listener);
+          listeners[type] = listeners[type].slice();
+          listeners[type].splice(index, 1);
+          return index > -1;
+        };
+        /**
+         * Trigger an event of the specified type on this stream. Any additional
+         * arguments to this function are passed as parameters to event listeners.
+         * @param type {string} the event name
+         */
+
+        this.trigger = function (type) {
+          var callbacks, i, length, args;
+          callbacks = listeners[type];
+          if (!callbacks) {
+            return;
+          } // Slicing the arguments on every invocation of this method
+          // can add a significant amount of overhead. Avoid the
+          // intermediate object creation for the common case of a
+          // single callback argument
+
+          if (arguments.length === 2) {
+            length = callbacks.length;
+            for (i = 0; i < length; ++i) {
+              callbacks[i].call(this, arguments[1]);
+            }
+          } else {
+            args = [];
+            i = arguments.length;
+            for (i = 1; i < arguments.length; ++i) {
+              args.push(arguments[i]);
+            }
+            length = callbacks.length;
+            for (i = 0; i < length; ++i) {
+              callbacks[i].apply(this, args);
+            }
+          }
+        };
+        /**
+         * Destroys the stream and cleans up.
+         */
+
+        this.dispose = function () {
+          listeners = {};
+        };
+      };
+    };
+    /**
+     * Forwards all `data` events on this stream to the destination stream. The
+     * destination stream should provide a method `push` to receive the data
+     * events as they arrive.
+     * @param destination {stream} the stream that will receive all `data` events
+     * @param autoFlush {boolean} if false, we will not call `flush` on the destination
+     *                            when the current stream emits a 'done' event
+     * @see http://nodejs.org/api/stream.html#stream_readable_pipe_destination_options
+     */
+
+    Stream$8.prototype.pipe = function (destination) {
+      this.on('data', function (data) {
+        destination.push(data);
+      });
+      this.on('done', function (flushSource) {
+        destination.flush(flushSource);
+      });
+      this.on('partialdone', function (flushSource) {
+        destination.partialFlush(flushSource);
+      });
+      this.on('endedtimeline', function (flushSource) {
+        destination.endTimeline(flushSource);
+      });
+      this.on('reset', function (flushSource) {
+        destination.reset(flushSource);
+      });
+      return destination;
+    }; // Default stream functions that are expected to be overridden to perform
+    // actual work. These are provided by the prototype as a sort of no-op
+    // implementation so that we don't have to check for their existence in the
+    // `pipe` function above.
+
+    Stream$8.prototype.push = function (data) {
+      this.trigger('data', data);
+    };
+    Stream$8.prototype.flush = function (flushSource) {
+      this.trigger('done', flushSource);
+    };
+    Stream$8.prototype.partialFlush = function (flushSource) {
+      this.trigger('partialdone', flushSource);
+    };
+    Stream$8.prototype.endTimeline = function (flushSource) {
+      this.trigger('endedtimeline', flushSource);
+    };
+    Stream$8.prototype.reset = function (flushSource) {
+      this.trigger('reset', flushSource);
+    };
+    var stream = Stream$8;
+    var MAX_UINT32$1 = Math.pow(2, 32);
+    var getUint64$3 = function (uint8) {
+      var dv = new DataView(uint8.buffer, uint8.byteOffset, uint8.byteLength);
+      var value;
+      if (dv.getBigUint64) {
+        value = dv.getBigUint64(0);
+        if (value < Number.MAX_SAFE_INTEGER) {
+          return Number(value);
+        }
+        return value;
+      }
+      return dv.getUint32(0) * MAX_UINT32$1 + dv.getUint32(4);
+    };
+    var numbers = {
+      getUint64: getUint64$3,
+      MAX_UINT32: MAX_UINT32$1
+    };
+    /**
+     * mux.js
+     *
+     * Copyright (c) Brightcove
+     * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE
+     *
+     * Functions that generate fragmented MP4s suitable for use with Media
+     * Source Extensions.
+     */
+
+    var MAX_UINT32 = numbers.MAX_UINT32;
+    var box, dinf, esds, ftyp, mdat, mfhd, minf, moof, moov, mvex, mvhd, trak, tkhd, mdia, mdhd, hdlr, sdtp, stbl, stsd, traf, trex, trun$1, types, MAJOR_BRAND, MINOR_VERSION, AVC1_BRAND, VIDEO_HDLR, AUDIO_HDLR, HDLR_TYPES, VMHD, SMHD, DREF, STCO, STSC, STSZ, STTS; // pre-calculate constants
+
+    (function () {
+      var i;
+      types = {
+        avc1: [],
+        // codingname
+        avcC: [],
+        btrt: [],
+        dinf: [],
+        dref: [],
+        esds: [],
+        ftyp: [],
+        hdlr: [],
+        mdat: [],
+        mdhd: [],
+        mdia: [],
+        mfhd: [],
+        minf: [],
+        moof: [],
+        moov: [],
+        mp4a: [],
+        // codingname
+        mvex: [],
+        mvhd: [],
+        pasp: [],
+        sdtp: [],
+        smhd: [],
+        stbl: [],
+        stco: [],
+        stsc: [],
+        stsd: [],
+        stsz: [],
+        stts: [],
+        styp: [],
+        tfdt: [],
+        tfhd: [],
+        traf: [],
+        trak: [],
+        trun: [],
+        trex: [],
+        tkhd: [],
+        vmhd: []
+      }; // In environments where Uint8Array is undefined (e.g., IE8), skip set up so that we
+      // don't throw an error
+
+      if (typeof Uint8Array === 'undefined') {
+        return;
+      }
+      for (i in types) {
+        if (types.hasOwnProperty(i)) {
+          types[i] = [i.charCodeAt(0), i.charCodeAt(1), i.charCodeAt(2), i.charCodeAt(3)];
+        }
+      }
+      MAJOR_BRAND = new Uint8Array(['i'.charCodeAt(0), 's'.charCodeAt(0), 'o'.charCodeAt(0), 'm'.charCodeAt(0)]);
+      AVC1_BRAND = new Uint8Array(['a'.charCodeAt(0), 'v'.charCodeAt(0), 'c'.charCodeAt(0), '1'.charCodeAt(0)]);
+      MINOR_VERSION = new Uint8Array([0, 0, 0, 1]);
+      VIDEO_HDLR = new Uint8Array([0x00,
+      // version 0
+      0x00, 0x00, 0x00,
+      // flags
+      0x00, 0x00, 0x00, 0x00,
+      // pre_defined
+      0x76, 0x69, 0x64, 0x65,
+      // handler_type: 'vide'
+      0x00, 0x00, 0x00, 0x00,
+      // reserved
+      0x00, 0x00, 0x00, 0x00,
+      // reserved
+      0x00, 0x00, 0x00, 0x00,
+      // reserved
+      0x56, 0x69, 0x64, 0x65, 0x6f, 0x48, 0x61, 0x6e, 0x64, 0x6c, 0x65, 0x72, 0x00 // name: 'VideoHandler'
+      ]);
+
+      AUDIO_HDLR = new Uint8Array([0x00,
+      // version 0
+      0x00, 0x00, 0x00,
+      // flags
+      0x00, 0x00, 0x00, 0x00,
+      // pre_defined
+      0x73, 0x6f, 0x75, 0x6e,
+      // handler_type: 'soun'
+      0x00, 0x00, 0x00, 0x00,
+      // reserved
+      0x00, 0x00, 0x00, 0x00,
+      // reserved
+      0x00, 0x00, 0x00, 0x00,
+      // reserved
+      0x53, 0x6f, 0x75, 0x6e, 0x64, 0x48, 0x61, 0x6e, 0x64, 0x6c, 0x65, 0x72, 0x00 // name: 'SoundHandler'
+      ]);
+
+      HDLR_TYPES = {
+        video: VIDEO_HDLR,
+        audio: AUDIO_HDLR
+      };
+      DREF = new Uint8Array([0x00,
+      // version 0
+      0x00, 0x00, 0x00,
+      // flags
+      0x00, 0x00, 0x00, 0x01,
+      // entry_count
+      0x00, 0x00, 0x00, 0x0c,
+      // entry_size
+      0x75, 0x72, 0x6c, 0x20,
+      // 'url' type
+      0x00,
+      // version 0
+      0x00, 0x00, 0x01 // entry_flags
+      ]);
+
+      SMHD = new Uint8Array([0x00,
+      // version
+      0x00, 0x00, 0x00,
+      // flags
+      0x00, 0x00,
+      // balance, 0 means centered
+      0x00, 0x00 // reserved
+      ]);
+
+      STCO = new Uint8Array([0x00,
+      // version
+      0x00, 0x00, 0x00,
+      // flags
+      0x00, 0x00, 0x00, 0x00 // entry_count
+      ]);
+
+      STSC = STCO;
+      STSZ = new Uint8Array([0x00,
+      // version
+      0x00, 0x00, 0x00,
+      // flags
+      0x00, 0x00, 0x00, 0x00,
+      // sample_size
+      0x00, 0x00, 0x00, 0x00 // sample_count
+      ]);
+
+      STTS = STCO;
+      VMHD = new Uint8Array([0x00,
+      // version
+      0x00, 0x00, 0x01,
+      // flags
+      0x00, 0x00,
+      // graphicsmode
+      0x00, 0x00, 0x00, 0x00, 0x00, 0x00 // opcolor
+      ]);
+    })();
+
+    box = function (type) {
+      var payload = [],
+        size = 0,
+        i,
+        result,
+        view;
+      for (i = 1; i < arguments.length; i++) {
+        payload.push(arguments[i]);
+      }
+      i = payload.length; // calculate the total size we need to allocate
+
+      while (i--) {
+        size += payload[i].byteLength;
+      }
+      result = new Uint8Array(size + 8);
+      view = new DataView(result.buffer, result.byteOffset, result.byteLength);
+      view.setUint32(0, result.byteLength);
+      result.set(type, 4); // copy the payload into the result
+
+      for (i = 0, size = 8; i < payload.length; i++) {
+        result.set(payload[i], size);
+        size += payload[i].byteLength;
+      }
+      return result;
+    };
+    dinf = function () {
+      return box(types.dinf, box(types.dref, DREF));
+    };
+    esds = function (track) {
+      return box(types.esds, new Uint8Array([0x00,
+      // version
+      0x00, 0x00, 0x00,
+      // flags
+      // ES_Descriptor
+      0x03,
+      // tag, ES_DescrTag
+      0x19,
+      // length
+      0x00, 0x00,
+      // ES_ID
+      0x00,
+      // streamDependenceFlag, URL_flag, reserved, streamPriority
+      // DecoderConfigDescriptor
+      0x04,
+      // tag, DecoderConfigDescrTag
+      0x11,
+      // length
+      0x40,
+      // object type
+      0x15,
+      // streamType
+      0x00, 0x06, 0x00,
+      // bufferSizeDB
+      0x00, 0x00, 0xda, 0xc0,
+      // maxBitrate
+      0x00, 0x00, 0xda, 0xc0,
+      // avgBitrate
+      // DecoderSpecificInfo
+      0x05,
+      // tag, DecoderSpecificInfoTag
+      0x02,
+      // length
+      // ISO/IEC 14496-3, AudioSpecificConfig
+      // for samplingFrequencyIndex see ISO/IEC 13818-7:2006, 8.1.3.2.2, Table 35
+      track.audioobjecttype << 3 | track.samplingfrequencyindex >>> 1, track.samplingfrequencyindex << 7 | track.channelcount << 3, 0x06, 0x01, 0x02 // GASpecificConfig
+      ]));
+    };
+
+    ftyp = function () {
+      return box(types.ftyp, MAJOR_BRAND, MINOR_VERSION, MAJOR_BRAND, AVC1_BRAND);
+    };
+    hdlr = function (type) {
+      return box(types.hdlr, HDLR_TYPES[type]);
+    };
+    mdat = function (data) {
+      return box(types.mdat, data);
+    };
+    mdhd = function (track) {
+      var result = new Uint8Array([0x00,
+      // version 0
+      0x00, 0x00, 0x00,
+      // flags
+      0x00, 0x00, 0x00, 0x02,
+      // creation_time
+      0x00, 0x00, 0x00, 0x03,
+      // modification_time
+      0x00, 0x01, 0x5f, 0x90,
+      // timescale, 90,000 "ticks" per second
+      track.duration >>> 24 & 0xFF, track.duration >>> 16 & 0xFF, track.duration >>> 8 & 0xFF, track.duration & 0xFF,
+      // duration
+      0x55, 0xc4,
+      // 'und' language (undetermined)
+      0x00, 0x00]); // Use the sample rate from the track metadata, when it is
+      // defined. The sample rate can be parsed out of an ADTS header, for
+      // instance.
+
+      if (track.samplerate) {
+        result[12] = track.samplerate >>> 24 & 0xFF;
+        result[13] = track.samplerate >>> 16 & 0xFF;
+        result[14] = track.samplerate >>> 8 & 0xFF;
+        result[15] = track.samplerate & 0xFF;
+      }
+      return box(types.mdhd, result);
+    };
+    mdia = function (track) {
+      return box(types.mdia, mdhd(track), hdlr(track.type), minf(track));
+    };
+    mfhd = function (sequenceNumber) {
+      return box(types.mfhd, new Uint8Array([0x00, 0x00, 0x00, 0x00,
+      // flags
+      (sequenceNumber & 0xFF000000) >> 24, (sequenceNumber & 0xFF0000) >> 16, (sequenceNumber & 0xFF00) >> 8, sequenceNumber & 0xFF // sequence_number
+      ]));
+    };
+
+    minf = function (track) {
+      return box(types.minf, track.type === 'video' ? box(types.vmhd, VMHD) : box(types.smhd, SMHD), dinf(), stbl(track));
+    };
+    moof = function (sequenceNumber, tracks) {
+      var trackFragments = [],
+        i = tracks.length; // build traf boxes for each track fragment
+
+      while (i--) {
+        trackFragments[i] = traf(tracks[i]);
+      }
+      return box.apply(null, [types.moof, mfhd(sequenceNumber)].concat(trackFragments));
+    };
+    /**
+     * Returns a movie box.
+     * @param tracks {array} the tracks associated with this movie
+     * @see ISO/IEC 14496-12:2012(E), section 8.2.1
+     */
+
+    moov = function (tracks) {
+      var i = tracks.length,
+        boxes = [];
+      while (i--) {
+        boxes[i] = trak(tracks[i]);
+      }
+      return box.apply(null, [types.moov, mvhd(0xffffffff)].concat(boxes).concat(mvex(tracks)));
+    };
+    mvex = function (tracks) {
+      var i = tracks.length,
+        boxes = [];
+      while (i--) {
+        boxes[i] = trex(tracks[i]);
+      }
+      return box.apply(null, [types.mvex].concat(boxes));
+    };
+    mvhd = function (duration) {
+      var bytes = new Uint8Array([0x00,
+      // version 0
+      0x00, 0x00, 0x00,
+      // flags
+      0x00, 0x00, 0x00, 0x01,
+      // creation_time
+      0x00, 0x00, 0x00, 0x02,
+      // modification_time
+      0x00, 0x01, 0x5f, 0x90,
+      // timescale, 90,000 "ticks" per second
+      (duration & 0xFF000000) >> 24, (duration & 0xFF0000) >> 16, (duration & 0xFF00) >> 8, duration & 0xFF,
+      // duration
+      0x00, 0x01, 0x00, 0x00,
+      // 1.0 rate
+      0x01, 0x00,
+      // 1.0 volume
+      0x00, 0x00,
+      // reserved
+      0x00, 0x00, 0x00, 0x00,
+      // reserved
+      0x00, 0x00, 0x00, 0x00,
+      // reserved
+      0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x40, 0x00, 0x00, 0x00,
+      // transformation: unity matrix
+      0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+      // pre_defined
+      0xff, 0xff, 0xff, 0xff // next_track_ID
+      ]);
+
+      return box(types.mvhd, bytes);
+    };
+    sdtp = function (track) {
+      var samples = track.samples || [],
+        bytes = new Uint8Array(4 + samples.length),
+        flags,
+        i; // leave the full box header (4 bytes) all zero
+      // write the sample table
+
+      for (i = 0; i < samples.length; i++) {
+        flags = samples[i].flags;
+        bytes[i + 4] = flags.dependsOn << 4 | flags.isDependedOn << 2 | flags.hasRedundancy;
+      }
+      return box(types.sdtp, bytes);
+    };
+    stbl = function (track) {
+      return box(types.stbl, stsd(track), box(types.stts, STTS), box(types.stsc, STSC), box(types.stsz, STSZ), box(types.stco, STCO));
+    };
+    (function () {
+      var videoSample, audioSample;
+      stsd = function (track) {
+        return box(types.stsd, new Uint8Array([0x00,
+        // version 0
+        0x00, 0x00, 0x00,
+        // flags
+        0x00, 0x00, 0x00, 0x01]), track.type === 'video' ? videoSample(track) : audioSample(track));
+      };
+      videoSample = function (track) {
+        var sps = track.sps || [],
+          pps = track.pps || [],
+          sequenceParameterSets = [],
+          pictureParameterSets = [],
+          i,
+          avc1Box; // assemble the SPSs
+
+        for (i = 0; i < sps.length; i++) {
+          sequenceParameterSets.push((sps[i].byteLength & 0xFF00) >>> 8);
+          sequenceParameterSets.push(sps[i].byteLength & 0xFF); // sequenceParameterSetLength
+
+          sequenceParameterSets = sequenceParameterSets.concat(Array.prototype.slice.call(sps[i])); // SPS
+        } // assemble the PPSs
+
+        for (i = 0; i < pps.length; i++) {
+          pictureParameterSets.push((pps[i].byteLength & 0xFF00) >>> 8);
+          pictureParameterSets.push(pps[i].byteLength & 0xFF);
+          pictureParameterSets = pictureParameterSets.concat(Array.prototype.slice.call(pps[i]));
+        }
+        avc1Box = [types.avc1, new Uint8Array([0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        // reserved
+        0x00, 0x01,
+        // data_reference_index
+        0x00, 0x00,
+        // pre_defined
+        0x00, 0x00,
+        // reserved
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        // pre_defined
+        (track.width & 0xff00) >> 8, track.width & 0xff,
+        // width
+        (track.height & 0xff00) >> 8, track.height & 0xff,
+        // height
+        0x00, 0x48, 0x00, 0x00,
+        // horizresolution
+        0x00, 0x48, 0x00, 0x00,
+        // vertresolution
+        0x00, 0x00, 0x00, 0x00,
+        // reserved
+        0x00, 0x01,
+        // frame_count
+        0x13, 0x76, 0x69, 0x64, 0x65, 0x6f, 0x6a, 0x73, 0x2d, 0x63, 0x6f, 0x6e, 0x74, 0x72, 0x69, 0x62, 0x2d, 0x68, 0x6c, 0x73, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        // compressorname
+        0x00, 0x18,
+        // depth = 24
+        0x11, 0x11 // pre_defined = -1
+        ]), box(types.avcC, new Uint8Array([0x01,
+        // configurationVersion
+        track.profileIdc,
+        // AVCProfileIndication
+        track.profileCompatibility,
+        // profile_compatibility
+        track.levelIdc,
+        // AVCLevelIndication
+        0xff // lengthSizeMinusOne, hard-coded to 4 bytes
+        ].concat([sps.length],
+        // numOfSequenceParameterSets
+        sequenceParameterSets,
+        // "SPS"
+        [pps.length],
+        // numOfPictureParameterSets
+        pictureParameterSets // "PPS"
+        ))), box(types.btrt, new Uint8Array([0x00, 0x1c, 0x9c, 0x80,
+        // bufferSizeDB
+        0x00, 0x2d, 0xc6, 0xc0,
+        // maxBitrate
+        0x00, 0x2d, 0xc6, 0xc0 // avgBitrate
+        ]))];
+
+        if (track.sarRatio) {
+          var hSpacing = track.sarRatio[0],
+            vSpacing = track.sarRatio[1];
+          avc1Box.push(box(types.pasp, new Uint8Array([(hSpacing & 0xFF000000) >> 24, (hSpacing & 0xFF0000) >> 16, (hSpacing & 0xFF00) >> 8, hSpacing & 0xFF, (vSpacing & 0xFF000000) >> 24, (vSpacing & 0xFF0000) >> 16, (vSpacing & 0xFF00) >> 8, vSpacing & 0xFF])));
+        }
+        return box.apply(null, avc1Box);
+      };
+      audioSample = function (track) {
+        return box(types.mp4a, new Uint8Array([
+        // SampleEntry, ISO/IEC 14496-12
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        // reserved
+        0x00, 0x01,
+        // data_reference_index
+        // AudioSampleEntry, ISO/IEC 14496-12
+        0x00, 0x00, 0x00, 0x00,
+        // reserved
+        0x00, 0x00, 0x00, 0x00,
+        // reserved
+        (track.channelcount & 0xff00) >> 8, track.channelcount & 0xff,
+        // channelcount
+        (track.samplesize & 0xff00) >> 8, track.samplesize & 0xff,
+        // samplesize
+        0x00, 0x00,
+        // pre_defined
+        0x00, 0x00,
+        // reserved
+        (track.samplerate & 0xff00) >> 8, track.samplerate & 0xff, 0x00, 0x00 // samplerate, 16.16
+        // MP4AudioSampleEntry, ISO/IEC 14496-14
+        ]), esds(track));
+      };
+    })();
+    tkhd = function (track) {
+      var result = new Uint8Array([0x00,
+      // version 0
+      0x00, 0x00, 0x07,
+      // flags
+      0x00, 0x00, 0x00, 0x00,
+      // creation_time
+      0x00, 0x00, 0x00, 0x00,
+      // modification_time
+      (track.id & 0xFF000000) >> 24, (track.id & 0xFF0000) >> 16, (track.id & 0xFF00) >> 8, track.id & 0xFF,
+      // track_ID
+      0x00, 0x00, 0x00, 0x00,
+      // reserved
+      (track.duration & 0xFF000000) >> 24, (track.duration & 0xFF0000) >> 16, (track.duration & 0xFF00) >> 8, track.duration & 0xFF,
+      // duration
+      0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+      // reserved
+      0x00, 0x00,
+      // layer
+      0x00, 0x00,
+      // alternate_group
+      0x01, 0x00,
+      // non-audio track volume
+      0x00, 0x00,
+      // reserved
+      0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x40, 0x00, 0x00, 0x00,
+      // transformation: unity matrix
+      (track.width & 0xFF00) >> 8, track.width & 0xFF, 0x00, 0x00,
+      // width
+      (track.height & 0xFF00) >> 8, track.height & 0xFF, 0x00, 0x00 // height
+      ]);
+
+      return box(types.tkhd, result);
+    };
+    /**
+     * Generate a track fragment (traf) box. A traf box collects metadata
+     * about tracks in a movie fragment (moof) box.
+     */
+
+    traf = function (track) {
+      var trackFragmentHeader, trackFragmentDecodeTime, trackFragmentRun, sampleDependencyTable, dataOffset, upperWordBaseMediaDecodeTime, lowerWordBaseMediaDecodeTime;
+      trackFragmentHeader = box(types.tfhd, new Uint8Array([0x00,
+      // version 0
+      0x00, 0x00, 0x3a,
+      // flags
+      (track.id & 0xFF000000) >> 24, (track.id & 0xFF0000) >> 16, (track.id & 0xFF00) >> 8, track.id & 0xFF,
+      // track_ID
+      0x00, 0x00, 0x00, 0x01,
+      // sample_description_index
+      0x00, 0x00, 0x00, 0x00,
+      // default_sample_duration
+      0x00, 0x00, 0x00, 0x00,
+      // default_sample_size
+      0x00, 0x00, 0x00, 0x00 // default_sample_flags
+      ]));
+
+      upperWordBaseMediaDecodeTime = Math.floor(track.baseMediaDecodeTime / MAX_UINT32);
+      lowerWordBaseMediaDecodeTime = Math.floor(track.baseMediaDecodeTime % MAX_UINT32);
+      trackFragmentDecodeTime = box(types.tfdt, new Uint8Array([0x01,
+      // version 1
+      0x00, 0x00, 0x00,
+      // flags
+      // baseMediaDecodeTime
+      upperWordBaseMediaDecodeTime >>> 24 & 0xFF, upperWordBaseMediaDecodeTime >>> 16 & 0xFF, upperWordBaseMediaDecodeTime >>> 8 & 0xFF, upperWordBaseMediaDecodeTime & 0xFF, lowerWordBaseMediaDecodeTime >>> 24 & 0xFF, lowerWordBaseMediaDecodeTime >>> 16 & 0xFF, lowerWordBaseMediaDecodeTime >>> 8 & 0xFF, lowerWordBaseMediaDecodeTime & 0xFF])); // the data offset specifies the number of bytes from the start of
+      // the containing moof to the first payload byte of the associated
+      // mdat
+
+      dataOffset = 32 +
+      // tfhd
+      20 +
+      // tfdt
+      8 +
+      // traf header
+      16 +
+      // mfhd
+      8 +
+      // moof header
+      8; // mdat header
+      // audio tracks require less metadata
+
+      if (track.type === 'audio') {
+        trackFragmentRun = trun$1(track, dataOffset);
+        return box(types.traf, trackFragmentHeader, trackFragmentDecodeTime, trackFragmentRun);
+      } // video tracks should contain an independent and disposable samples
+      // box (sdtp)
+      // generate one and adjust offsets to match
+
+      sampleDependencyTable = sdtp(track);
+      trackFragmentRun = trun$1(track, sampleDependencyTable.length + dataOffset);
+      return box(types.traf, trackFragmentHeader, trackFragmentDecodeTime, trackFragmentRun, sampleDependencyTable);
+    };
+    /**
+     * Generate a track box.
+     * @param track {object} a track definition
+     * @return {Uint8Array} the track box
+     */
+
+    trak = function (track) {
+      track.duration = track.duration || 0xffffffff;
+      return box(types.trak, tkhd(track), mdia(track));
+    };
+    trex = function (track) {
+      var result = new Uint8Array([0x00,
+      // version 0
+      0x00, 0x00, 0x00,
+      // flags
+      (track.id & 0xFF000000) >> 24, (track.id & 0xFF0000) >> 16, (track.id & 0xFF00) >> 8, track.id & 0xFF,
+      // track_ID
+      0x00, 0x00, 0x00, 0x01,
+      // default_sample_description_index
+      0x00, 0x00, 0x00, 0x00,
+      // default_sample_duration
+      0x00, 0x00, 0x00, 0x00,
+      // default_sample_size
+      0x00, 0x01, 0x00, 0x01 // default_sample_flags
+      ]); // the last two bytes of default_sample_flags is the sample
+      // degradation priority, a hint about the importance of this sample
+      // relative to others. Lower the degradation priority for all sample
+      // types other than video.
+
+      if (track.type !== 'video') {
+        result[result.length - 1] = 0x00;
+      }
+      return box(types.trex, result);
+    };
+    (function () {
+      var audioTrun, videoTrun, trunHeader; // This method assumes all samples are uniform. That is, if a
+      // duration is present for the first sample, it will be present for
+      // all subsequent samples.
+      // see ISO/IEC 14496-12:2012, Section 8.8.8.1
+
+      trunHeader = function (samples, offset) {
+        var durationPresent = 0,
+          sizePresent = 0,
+          flagsPresent = 0,
+          compositionTimeOffset = 0; // trun flag constants
+
+        if (samples.length) {
+          if (samples[0].duration !== undefined) {
+            durationPresent = 0x1;
+          }
+          if (samples[0].size !== undefined) {
+            sizePresent = 0x2;
+          }
+          if (samples[0].flags !== undefined) {
+            flagsPresent = 0x4;
+          }
+          if (samples[0].compositionTimeOffset !== undefined) {
+            compositionTimeOffset = 0x8;
+          }
+        }
+        return [0x00,
+        // version 0
+        0x00, durationPresent | sizePresent | flagsPresent | compositionTimeOffset, 0x01,
+        // flags
+        (samples.length & 0xFF000000) >>> 24, (samples.length & 0xFF0000) >>> 16, (samples.length & 0xFF00) >>> 8, samples.length & 0xFF,
+        // sample_count
+        (offset & 0xFF000000) >>> 24, (offset & 0xFF0000) >>> 16, (offset & 0xFF00) >>> 8, offset & 0xFF // data_offset
+        ];
+      };
+
+      videoTrun = function (track, offset) {
+        var bytesOffest, bytes, header, samples, sample, i;
+        samples = track.samples || [];
+        offset += 8 + 12 + 16 * samples.length;
+        header = trunHeader(samples, offset);
+        bytes = new Uint8Array(header.length + samples.length * 16);
+        bytes.set(header);
+        bytesOffest = header.length;
+        for (i = 0; i < samples.length; i++) {
+          sample = samples[i];
+          bytes[bytesOffest++] = (sample.duration & 0xFF000000) >>> 24;
+          bytes[bytesOffest++] = (sample.duration & 0xFF0000) >>> 16;
+          bytes[bytesOffest++] = (sample.duration & 0xFF00) >>> 8;
+          bytes[bytesOffest++] = sample.duration & 0xFF; // sample_duration
+
+          bytes[bytesOffest++] = (sample.size & 0xFF000000) >>> 24;
+          bytes[bytesOffest++] = (sample.size & 0xFF0000) >>> 16;
+          bytes[bytesOffest++] = (sample.size & 0xFF00) >>> 8;
+          bytes[bytesOffest++] = sample.size & 0xFF; // sample_size
+
+          bytes[bytesOffest++] = sample.flags.isLeading << 2 | sample.flags.dependsOn;
+          bytes[bytesOffest++] = sample.flags.isDependedOn << 6 | sample.flags.hasRedundancy << 4 | sample.flags.paddingValue << 1 | sample.flags.isNonSyncSample;
+          bytes[bytesOffest++] = sample.flags.degradationPriority & 0xF0 << 8;
+          bytes[bytesOffest++] = sample.flags.degradationPriority & 0x0F; // sample_flags
+
+          bytes[bytesOffest++] = (sample.compositionTimeOffset & 0xFF000000) >>> 24;
+          bytes[bytesOffest++] = (sample.compositionTimeOffset & 0xFF0000) >>> 16;
+          bytes[bytesOffest++] = (sample.compositionTimeOffset & 0xFF00) >>> 8;
+          bytes[bytesOffest++] = sample.compositionTimeOffset & 0xFF; // sample_composition_time_offset
+        }
+
+        return box(types.trun, bytes);
+      };
+      audioTrun = function (track, offset) {
+        var bytes, bytesOffest, header, samples, sample, i;
+        samples = track.samples || [];
+        offset += 8 + 12 + 8 * samples.length;
+        header = trunHeader(samples, offset);
+        bytes = new Uint8Array(header.length + samples.length * 8);
+        bytes.set(header);
+        bytesOffest = header.length;
+        for (i = 0; i < samples.length; i++) {
+          sample = samples[i];
+          bytes[bytesOffest++] = (sample.duration & 0xFF000000) >>> 24;
+          bytes[bytesOffest++] = (sample.duration & 0xFF0000) >>> 16;
+          bytes[bytesOffest++] = (sample.duration & 0xFF00) >>> 8;
+          bytes[bytesOffest++] = sample.duration & 0xFF; // sample_duration
+
+          bytes[bytesOffest++] = (sample.size & 0xFF000000) >>> 24;
+          bytes[bytesOffest++] = (sample.size & 0xFF0000) >>> 16;
+          bytes[bytesOffest++] = (sample.size & 0xFF00) >>> 8;
+          bytes[bytesOffest++] = sample.size & 0xFF; // sample_size
+        }
+
+        return box(types.trun, bytes);
+      };
+      trun$1 = function (track, offset) {
+        if (track.type === 'audio') {
+          return audioTrun(track, offset);
+        }
+        return videoTrun(track, offset);
+      };
+    })();
+    var mp4Generator = {
+      ftyp: ftyp,
+      mdat: mdat,
+      moof: moof,
+      moov: moov,
+      initSegment: function (tracks) {
+        var fileType = ftyp(),
+          movie = moov(tracks),
+          result;
+        result = new Uint8Array(fileType.byteLength + movie.byteLength);
+        result.set(fileType);
+        result.set(movie, fileType.byteLength);
+        return result;
+      }
+    };
+    /**
+     * mux.js
+     *
+     * Copyright (c) Brightcove
+     * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE
+     */
+    // composed of the nal units that make up that frame
+    // Also keep track of cummulative data about the frame from the nal units such
+    // as the frame duration, starting pts, etc.
+
+    var groupNalsIntoFrames = function (nalUnits) {
+      var i,
+        currentNal,
+        currentFrame = [],
+        frames = []; // TODO added for LHLS, make sure this is OK
+
+      frames.byteLength = 0;
+      frames.nalCount = 0;
+      frames.duration = 0;
+      currentFrame.byteLength = 0;
+      for (i = 0; i < nalUnits.length; i++) {
+        currentNal = nalUnits[i]; // Split on 'aud'-type nal units
+
+        if (currentNal.nalUnitType === 'access_unit_delimiter_rbsp') {
+          // Since the very first nal unit is expected to be an AUD
+          // only push to the frames array when currentFrame is not empty
+          if (currentFrame.length) {
+            currentFrame.duration = currentNal.dts - currentFrame.dts; // TODO added for LHLS, make sure this is OK
+
+            frames.byteLength += currentFrame.byteLength;
+            frames.nalCount += currentFrame.length;
+            frames.duration += currentFrame.duration;
+            frames.push(currentFrame);
+          }
+          currentFrame = [currentNal];
+          currentFrame.byteLength = currentNal.data.byteLength;
+          currentFrame.pts = currentNal.pts;
+          currentFrame.dts = currentNal.dts;
+        } else {
+          // Specifically flag key frames for ease of use later
+          if (currentNal.nalUnitType === 'slice_layer_without_partitioning_rbsp_idr') {
+            currentFrame.keyFrame = true;
+          }
+          currentFrame.duration = currentNal.dts - currentFrame.dts;
+          currentFrame.byteLength += currentNal.data.byteLength;
+          currentFrame.push(currentNal);
+        }
+      } // For the last frame, use the duration of the previous frame if we
+      // have nothing better to go on
+
+      if (frames.length && (!currentFrame.duration || currentFrame.duration <= 0)) {
+        currentFrame.duration = frames[frames.length - 1].duration;
+      } // Push the final frame
+      // TODO added for LHLS, make sure this is OK
+
+      frames.byteLength += currentFrame.byteLength;
+      frames.nalCount += currentFrame.length;
+      frames.duration += currentFrame.duration;
+      frames.push(currentFrame);
+      return frames;
+    }; // Convert an array of frames into an array of Gop with each Gop being composed
+    // of the frames that make up that Gop
+    // Also keep track of cummulative data about the Gop from the frames such as the
+    // Gop duration, starting pts, etc.
+
+    var groupFramesIntoGops = function (frames) {
+      var i,
+        currentFrame,
+        currentGop = [],
+        gops = []; // We must pre-set some of the values on the Gop since we
+      // keep running totals of these values
+
+      currentGop.byteLength = 0;
+      currentGop.nalCount = 0;
+      currentGop.duration = 0;
+      currentGop.pts = frames[0].pts;
+      currentGop.dts = frames[0].dts; // store some metadata about all the Gops
+
+      gops.byteLength = 0;
+      gops.nalCount = 0;
+      gops.duration = 0;
+      gops.pts = frames[0].pts;
+      gops.dts = frames[0].dts;
+      for (i = 0; i < frames.length; i++) {
+        currentFrame = frames[i];
+        if (currentFrame.keyFrame) {
+          // Since the very first frame is expected to be an keyframe
+          // only push to the gops array when currentGop is not empty
+          if (currentGop.length) {
+            gops.push(currentGop);
+            gops.byteLength += currentGop.byteLength;
+            gops.nalCount += currentGop.nalCount;
+            gops.duration += currentGop.duration;
+          }
+          currentGop = [currentFrame];
+          currentGop.nalCount = currentFrame.length;
+          currentGop.byteLength = currentFrame.byteLength;
+          currentGop.pts = currentFrame.pts;
+          currentGop.dts = currentFrame.dts;
+          currentGop.duration = currentFrame.duration;
+        } else {
+          currentGop.duration += currentFrame.duration;
+          currentGop.nalCount += currentFrame.length;
+          currentGop.byteLength += currentFrame.byteLength;
+          currentGop.push(currentFrame);
+        }
+      }
+      if (gops.length && currentGop.duration <= 0) {
+        currentGop.duration = gops[gops.length - 1].duration;
+      }
+      gops.byteLength += currentGop.byteLength;
+      gops.nalCount += currentGop.nalCount;
+      gops.duration += currentGop.duration; // push the final Gop
+
+      gops.push(currentGop);
+      return gops;
+    };
+    /*
+     * Search for the first keyframe in the GOPs and throw away all frames
+     * until that keyframe. Then extend the duration of the pulled keyframe
+     * and pull the PTS and DTS of the keyframe so that it covers the time
+     * range of the frames that were disposed.
+     *
+     * @param {Array} gops video GOPs
+     * @returns {Array} modified video GOPs
+     */
+
+    var extendFirstKeyFrame = function (gops) {
+      var currentGop;
+      if (!gops[0][0].keyFrame && gops.length > 1) {
+        // Remove the first GOP
+        currentGop = gops.shift();
+        gops.byteLength -= currentGop.byteLength;
+        gops.nalCount -= currentGop.nalCount; // Extend the first frame of what is now the
+        // first gop to cover the time period of the
+        // frames we just removed
+
+        gops[0][0].dts = currentGop.dts;
+        gops[0][0].pts = currentGop.pts;
+        gops[0][0].duration += currentGop.duration;
+      }
+      return gops;
+    };
+    /**
+     * Default sample object
+     * see ISO/IEC 14496-12:2012, section 8.6.4.3
+     */
+
+    var createDefaultSample = function () {
+      return {
+        size: 0,
+        flags: {
+          isLeading: 0,
+          dependsOn: 1,
+          isDependedOn: 0,
+          hasRedundancy: 0,
+          degradationPriority: 0,
+          isNonSyncSample: 1
+        }
+      };
+    };
+    /*
+     * Collates information from a video frame into an object for eventual
+     * entry into an MP4 sample table.
+     *
+     * @param {Object} frame the video frame
+     * @param {Number} dataOffset the byte offset to position the sample
+     * @return {Object} object containing sample table info for a frame
+     */
+
+    var sampleForFrame = function (frame, dataOffset) {
+      var sample = createDefaultSample();
+      sample.dataOffset = dataOffset;
+      sample.compositionTimeOffset = frame.pts - frame.dts;
+      sample.duration = frame.duration;
+      sample.size = 4 * frame.length; // Space for nal unit size
+
+      sample.size += frame.byteLength;
+      if (frame.keyFrame) {
+        sample.flags.dependsOn = 2;
+        sample.flags.isNonSyncSample = 0;
+      }
+      return sample;
+    }; // generate the track's sample table from an array of gops
+
+    var generateSampleTable$1 = function (gops, baseDataOffset) {
+      var h,
+        i,
+        sample,
+        currentGop,
+        currentFrame,
+        dataOffset = baseDataOffset || 0,
+        samples = [];
+      for (h = 0; h < gops.length; h++) {
+        currentGop = gops[h];
+        for (i = 0; i < currentGop.length; i++) {
+          currentFrame = currentGop[i];
+          sample = sampleForFrame(currentFrame, dataOffset);
+          dataOffset += sample.size;
+          samples.push(sample);
+        }
+      }
+      return samples;
+    }; // generate the track's raw mdat data from an array of gops
+
+    var concatenateNalData = function (gops) {
+      var h,
+        i,
+        j,
+        currentGop,
+        currentFrame,
+        currentNal,
+        dataOffset = 0,
+        nalsByteLength = gops.byteLength,
+        numberOfNals = gops.nalCount,
+        totalByteLength = nalsByteLength + 4 * numberOfNals,
+        data = new Uint8Array(totalByteLength),
+        view = new DataView(data.buffer); // For each Gop..
+
+      for (h = 0; h < gops.length; h++) {
+        currentGop = gops[h]; // For each Frame..
+
+        for (i = 0; i < currentGop.length; i++) {
+          currentFrame = currentGop[i]; // For each NAL..
+
+          for (j = 0; j < currentFrame.length; j++) {
+            currentNal = currentFrame[j];
+            view.setUint32(dataOffset, currentNal.data.byteLength);
+            dataOffset += 4;
+            data.set(currentNal.data, dataOffset);
+            dataOffset += currentNal.data.byteLength;
+          }
+        }
+      }
+      return data;
+    }; // generate the track's sample table from a frame
+
+    var generateSampleTableForFrame = function (frame, baseDataOffset) {
+      var sample,
+        dataOffset = baseDataOffset || 0,
+        samples = [];
+      sample = sampleForFrame(frame, dataOffset);
+      samples.push(sample);
+      return samples;
+    }; // generate the track's raw mdat data from a frame
+
+    var concatenateNalDataForFrame = function (frame) {
+      var i,
+        currentNal,
+        dataOffset = 0,
+        nalsByteLength = frame.byteLength,
+        numberOfNals = frame.length,
+        totalByteLength = nalsByteLength + 4 * numberOfNals,
+        data = new Uint8Array(totalByteLength),
+        view = new DataView(data.buffer); // For each NAL..
+
+      for (i = 0; i < frame.length; i++) {
+        currentNal = frame[i];
+        view.setUint32(dataOffset, currentNal.data.byteLength);
+        dataOffset += 4;
+        data.set(currentNal.data, dataOffset);
+        dataOffset += currentNal.data.byteLength;
+      }
+      return data;
+    };
+    var frameUtils$1 = {
+      groupNalsIntoFrames: groupNalsIntoFrames,
+      groupFramesIntoGops: groupFramesIntoGops,
+      extendFirstKeyFrame: extendFirstKeyFrame,
+      generateSampleTable: generateSampleTable$1,
+      concatenateNalData: concatenateNalData,
+      generateSampleTableForFrame: generateSampleTableForFrame,
+      concatenateNalDataForFrame: concatenateNalDataForFrame
+    };
+    /**
+     * mux.js
+     *
+     * Copyright (c) Brightcove
+     * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE
+     */
+
+    var highPrefix = [33, 16, 5, 32, 164, 27];
+    var lowPrefix = [33, 65, 108, 84, 1, 2, 4, 8, 168, 2, 4, 8, 17, 191, 252];
+    var zeroFill = function (count) {
+      var a = [];
+      while (count--) {
+        a.push(0);
+      }
+      return a;
+    };
+    var makeTable = function (metaTable) {
+      return Object.keys(metaTable).reduce(function (obj, key) {
+        obj[key] = new Uint8Array(metaTable[key].reduce(function (arr, part) {
+          return arr.concat(part);
+        }, []));
+        return obj;
+      }, {});
+    };
+    var silence;
+    var silence_1 = function () {
+      if (!silence) {
+        // Frames-of-silence to use for filling in missing AAC frames
+        var coneOfSilence = {
+          96000: [highPrefix, [227, 64], zeroFill(154), [56]],
+          88200: [highPrefix, [231], zeroFill(170), [56]],
+          64000: [highPrefix, [248, 192], zeroFill(240), [56]],
+          48000: [highPrefix, [255, 192], zeroFill(268), [55, 148, 128], zeroFill(54), [112]],
+          44100: [highPrefix, [255, 192], zeroFill(268), [55, 163, 128], zeroFill(84), [112]],
+          32000: [highPrefix, [255, 192], zeroFill(268), [55, 234], zeroFill(226), [112]],
+          24000: [highPrefix, [255, 192], zeroFill(268), [55, 255, 128], zeroFill(268), [111, 112], zeroFill(126), [224]],
+          16000: [highPrefix, [255, 192], zeroFill(268), [55, 255, 128], zeroFill(268), [111, 255], zeroFill(269), [223, 108], zeroFill(195), [1, 192]],
+          12000: [lowPrefix, zeroFill(268), [3, 127, 248], zeroFill(268), [6, 255, 240], zeroFill(268), [13, 255, 224], zeroFill(268), [27, 253, 128], zeroFill(259), [56]],
+          11025: [lowPrefix, zeroFill(268), [3, 127, 248], zeroFill(268), [6, 255, 240], zeroFill(268), [13, 255, 224], zeroFill(268), [27, 255, 192], zeroFill(268), [55, 175, 128], zeroFill(108), [112]],
+          8000: [lowPrefix, zeroFill(268), [3, 121, 16], zeroFill(47), [7]]
+        };
+        silence = makeTable(coneOfSilence);
+      }
+      return silence;
+    };
+    /**
+     * mux.js
+     *
+     * Copyright (c) Brightcove
+     * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE
+     */
+
+    var ONE_SECOND_IN_TS$4 = 90000,
+      // 90kHz clock
+      secondsToVideoTs,
+      secondsToAudioTs,
+      videoTsToSeconds,
+      audioTsToSeconds,
+      audioTsToVideoTs,
+      videoTsToAudioTs,
+      metadataTsToSeconds;
+    secondsToVideoTs = function (seconds) {
+      return seconds * ONE_SECOND_IN_TS$4;
+    };
+    secondsToAudioTs = function (seconds, sampleRate) {
+      return seconds * sampleRate;
+    };
+    videoTsToSeconds = function (timestamp) {
+      return timestamp / ONE_SECOND_IN_TS$4;
+    };
+    audioTsToSeconds = function (timestamp, sampleRate) {
+      return timestamp / sampleRate;
+    };
+    audioTsToVideoTs = function (timestamp, sampleRate) {
+      return secondsToVideoTs(audioTsToSeconds(timestamp, sampleRate));
+    };
+    videoTsToAudioTs = function (timestamp, sampleRate) {
+      return secondsToAudioTs(videoTsToSeconds(timestamp), sampleRate);
+    };
+    /**
+     * Adjust ID3 tag or caption timing information by the timeline pts values
+     * (if keepOriginalTimestamps is false) and convert to seconds
+     */
+
+    metadataTsToSeconds = function (timestamp, timelineStartPts, keepOriginalTimestamps) {
+      return videoTsToSeconds(keepOriginalTimestamps ? timestamp : timestamp - timelineStartPts);
+    };
+    var clock$2 = {
+      ONE_SECOND_IN_TS: ONE_SECOND_IN_TS$4,
+      secondsToVideoTs: secondsToVideoTs,
+      secondsToAudioTs: secondsToAudioTs,
+      videoTsToSeconds: videoTsToSeconds,
+      audioTsToSeconds: audioTsToSeconds,
+      audioTsToVideoTs: audioTsToVideoTs,
+      videoTsToAudioTs: videoTsToAudioTs,
+      metadataTsToSeconds: metadataTsToSeconds
+    };
+    /**
+     * mux.js
+     *
+     * Copyright (c) Brightcove
+     * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE
+     */
+
+    var coneOfSilence = silence_1;
+    var clock$1 = clock$2;
+    /**
+     * Sum the `byteLength` properties of the data in each AAC frame
+     */
+
+    var sumFrameByteLengths = function (array) {
+      var i,
+        currentObj,
+        sum = 0; // sum the byteLength's all each nal unit in the frame
+
+      for (i = 0; i < array.length; i++) {
+        currentObj = array[i];
+        sum += currentObj.data.byteLength;
+      }
+      return sum;
+    }; // Possibly pad (prefix) the audio track with silence if appending this track
+    // would lead to the introduction of a gap in the audio buffer
+
+    var prefixWithSilence = function (track, frames, audioAppendStartTs, videoBaseMediaDecodeTime) {
+      var baseMediaDecodeTimeTs,
+        frameDuration = 0,
+        audioGapDuration = 0,
+        audioFillFrameCount = 0,
+        audioFillDuration = 0,
+        silentFrame,
+        i,
+        firstFrame;
+      if (!frames.length) {
+        return;
+      }
+      baseMediaDecodeTimeTs = clock$1.audioTsToVideoTs(track.baseMediaDecodeTime, track.samplerate); // determine frame clock duration based on sample rate, round up to avoid overfills
+
+      frameDuration = Math.ceil(clock$1.ONE_SECOND_IN_TS / (track.samplerate / 1024));
+      if (audioAppendStartTs && videoBaseMediaDecodeTime) {
+        // insert the shortest possible amount (audio gap or audio to video gap)
+        audioGapDuration = baseMediaDecodeTimeTs - Math.max(audioAppendStartTs, videoBaseMediaDecodeTime); // number of full frames in the audio gap
+
+        audioFillFrameCount = Math.floor(audioGapDuration / frameDuration);
+        audioFillDuration = audioFillFrameCount * frameDuration;
+      } // don't attempt to fill gaps smaller than a single frame or larger
+      // than a half second
+
+      if (audioFillFrameCount < 1 || audioFillDuration > clock$1.ONE_SECOND_IN_TS / 2) {
+        return;
+      }
+      silentFrame = coneOfSilence()[track.samplerate];
+      if (!silentFrame) {
+        // we don't have a silent frame pregenerated for the sample rate, so use a frame
+        // from the content instead
+        silentFrame = frames[0].data;
+      }
+      for (i = 0; i < audioFillFrameCount; i++) {
+        firstFrame = frames[0];
+        frames.splice(0, 0, {
+          data: silentFrame,
+          dts: firstFrame.dts - frameDuration,
+          pts: firstFrame.pts - frameDuration
+        });
+      }
+      track.baseMediaDecodeTime -= Math.floor(clock$1.videoTsToAudioTs(audioFillDuration, track.samplerate));
+      return audioFillDuration;
+    }; // If the audio segment extends before the earliest allowed dts
+    // value, remove AAC frames until starts at or after the earliest
+    // allowed DTS so that we don't end up with a negative baseMedia-
+    // DecodeTime for the audio track
+
+    var trimAdtsFramesByEarliestDts = function (adtsFrames, track, earliestAllowedDts) {
+      if (track.minSegmentDts >= earliestAllowedDts) {
+        return adtsFrames;
+      } // We will need to recalculate the earliest segment Dts
+
+      track.minSegmentDts = Infinity;
+      return adtsFrames.filter(function (currentFrame) {
+        // If this is an allowed frame, keep it and record it's Dts
+        if (currentFrame.dts >= earliestAllowedDts) {
+          track.minSegmentDts = Math.min(track.minSegmentDts, currentFrame.dts);
+          track.minSegmentPts = track.minSegmentDts;
+          return true;
+        } // Otherwise, discard it
+
+        return false;
+      });
+    }; // generate the track's raw mdat data from an array of frames
+
+    var generateSampleTable = function (frames) {
+      var i,
+        currentFrame,
+        samples = [];
+      for (i = 0; i < frames.length; i++) {
+        currentFrame = frames[i];
+        samples.push({
+          size: currentFrame.data.byteLength,
+          duration: 1024 // For AAC audio, all samples contain 1024 samples
+        });
+      }
+
+      return samples;
+    }; // generate the track's sample table from an array of frames
+
+    var concatenateFrameData = function (frames) {
+      var i,
+        currentFrame,
+        dataOffset = 0,
+        data = new Uint8Array(sumFrameByteLengths(frames));
+      for (i = 0; i < frames.length; i++) {
+        currentFrame = frames[i];
+        data.set(currentFrame.data, dataOffset);
+        dataOffset += currentFrame.data.byteLength;
+      }
+      return data;
+    };
+    var audioFrameUtils$1 = {
+      prefixWithSilence: prefixWithSilence,
+      trimAdtsFramesByEarliestDts: trimAdtsFramesByEarliestDts,
+      generateSampleTable: generateSampleTable,
+      concatenateFrameData: concatenateFrameData
+    };
+    /**
+     * mux.js
+     *
+     * Copyright (c) Brightcove
+     * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE
+     */
+
+    var ONE_SECOND_IN_TS$3 = clock$2.ONE_SECOND_IN_TS;
+    /**
+     * Store information about the start and end of the track and the
+     * duration for each frame/sample we process in order to calculate
+     * the baseMediaDecodeTime
+     */
+
+    var collectDtsInfo = function (track, data) {
+      if (typeof data.pts === 'number') {
+        if (track.timelineStartInfo.pts === undefined) {
+          track.timelineStartInfo.pts = data.pts;
+        }
+        if (track.minSegmentPts === undefined) {
+          track.minSegmentPts = data.pts;
+        } else {
+          track.minSegmentPts = Math.min(track.minSegmentPts, data.pts);
+        }
+        if (track.maxSegmentPts === undefined) {
+          track.maxSegmentPts = data.pts;
+        } else {
+          track.maxSegmentPts = Math.max(track.maxSegmentPts, data.pts);
+        }
+      }
+      if (typeof data.dts === 'number') {
+        if (track.timelineStartInfo.dts === undefined) {
+          track.timelineStartInfo.dts = data.dts;
+        }
+        if (track.minSegmentDts === undefined) {
+          track.minSegmentDts = data.dts;
+        } else {
+          track.minSegmentDts = Math.min(track.minSegmentDts, data.dts);
+        }
+        if (track.maxSegmentDts === undefined) {
+          track.maxSegmentDts = data.dts;
+        } else {
+          track.maxSegmentDts = Math.max(track.maxSegmentDts, data.dts);
+        }
+      }
+    };
+    /**
+     * Clear values used to calculate the baseMediaDecodeTime between
+     * tracks
+     */
+
+    var clearDtsInfo = function (track) {
+      delete track.minSegmentDts;
+      delete track.maxSegmentDts;
+      delete track.minSegmentPts;
+      delete track.maxSegmentPts;
+    };
+    /**
+     * Calculate the track's baseMediaDecodeTime based on the earliest
+     * DTS the transmuxer has ever seen and the minimum DTS for the
+     * current track
+     * @param track {object} track metadata configuration
+     * @param keepOriginalTimestamps {boolean} If true, keep the timestamps
+     *        in the source; false to adjust the first segment to start at 0.
+     */
+
+    var calculateTrackBaseMediaDecodeTime = function (track, keepOriginalTimestamps) {
+      var baseMediaDecodeTime,
+        scale,
+        minSegmentDts = track.minSegmentDts; // Optionally adjust the time so the first segment starts at zero.
+
+      if (!keepOriginalTimestamps) {
+        minSegmentDts -= track.timelineStartInfo.dts;
+      } // track.timelineStartInfo.baseMediaDecodeTime is the location, in time, where
+      // we want the start of the first segment to be placed
+
+      baseMediaDecodeTime = track.timelineStartInfo.baseMediaDecodeTime; // Add to that the distance this segment is from the very first
+
+      baseMediaDecodeTime += minSegmentDts; // baseMediaDecodeTime must not become negative
+
+      baseMediaDecodeTime = Math.max(0, baseMediaDecodeTime);
+      if (track.type === 'audio') {
+        // Audio has a different clock equal to the sampling_rate so we need to
+        // scale the PTS values into the clock rate of the track
+        scale = track.samplerate / ONE_SECOND_IN_TS$3;
+        baseMediaDecodeTime *= scale;
+        baseMediaDecodeTime = Math.floor(baseMediaDecodeTime);
+      }
+      return baseMediaDecodeTime;
+    };
+    var trackDecodeInfo$1 = {
+      clearDtsInfo: clearDtsInfo,
+      calculateTrackBaseMediaDecodeTime: calculateTrackBaseMediaDecodeTime,
+      collectDtsInfo: collectDtsInfo
+    };
+    /**
+     * mux.js
+     *
+     * Copyright (c) Brightcove
+     * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE
+     *
+     * Reads in-band caption information from a video elementary
+     * stream. Captions must follow the CEA-708 standard for injection
+     * into an MPEG-2 transport streams.
+     * @see https://en.wikipedia.org/wiki/CEA-708
+     * @see https://www.gpo.gov/fdsys/pkg/CFR-2007-title47-vol1/pdf/CFR-2007-title47-vol1-sec15-119.pdf
+     */
+    // payload type field to indicate how they are to be
+    // interpreted. CEAS-708 caption content is always transmitted with
+    // payload type 0x04.
+
+    var USER_DATA_REGISTERED_ITU_T_T35 = 4,
+      RBSP_TRAILING_BITS = 128;
+    /**
+      * Parse a supplemental enhancement information (SEI) NAL unit.
+      * Stops parsing once a message of type ITU T T35 has been found.
+      *
+      * @param bytes {Uint8Array} the bytes of a SEI NAL unit
+      * @return {object} the parsed SEI payload
+      * @see Rec. ITU-T H.264, 7.3.2.3.1
+      */
+
+    var parseSei = function (bytes) {
+      var i = 0,
+        result = {
+          payloadType: -1,
+          payloadSize: 0
+        },
+        payloadType = 0,
+        payloadSize = 0; // go through the sei_rbsp parsing each each individual sei_message
+
+      while (i < bytes.byteLength) {
+        // stop once we have hit the end of the sei_rbsp
+        if (bytes[i] === RBSP_TRAILING_BITS) {
+          break;
+        } // Parse payload type
+
+        while (bytes[i] === 0xFF) {
+          payloadType += 255;
+          i++;
+        }
+        payloadType += bytes[i++]; // Parse payload size
+
+        while (bytes[i] === 0xFF) {
+          payloadSize += 255;
+          i++;
+        }
+        payloadSize += bytes[i++]; // this sei_message is a 608/708 caption so save it and break
+        // there can only ever be one caption message in a frame's sei
+
+        if (!result.payload && payloadType === USER_DATA_REGISTERED_ITU_T_T35) {
+          var userIdentifier = String.fromCharCode(bytes[i + 3], bytes[i + 4], bytes[i + 5], bytes[i + 6]);
+          if (userIdentifier === 'GA94') {
+            result.payloadType = payloadType;
+            result.payloadSize = payloadSize;
+            result.payload = bytes.subarray(i, i + payloadSize);
+            break;
+          } else {
+            result.payload = void 0;
+          }
+        } // skip the payload and parse the next message
+
+        i += payloadSize;
+        payloadType = 0;
+        payloadSize = 0;
+      }
+      return result;
+    }; // see ANSI/SCTE 128-1 (2013), section 8.1
+
+    var parseUserData = function (sei) {
+      // itu_t_t35_contry_code must be 181 (United States) for
+      // captions
+      if (sei.payload[0] !== 181) {
+        return null;
+      } // itu_t_t35_provider_code should be 49 (ATSC) for captions
+
+      if ((sei.payload[1] << 8 | sei.payload[2]) !== 49) {
+        return null;
+      } // the user_identifier should be "GA94" to indicate ATSC1 data
+
+      if (String.fromCharCode(sei.payload[3], sei.payload[4], sei.payload[5], sei.payload[6]) !== 'GA94') {
+        return null;
+      } // finally, user_data_type_code should be 0x03 for caption data
+
+      if (sei.payload[7] !== 0x03) {
+        return null;
+      } // return the user_data_type_structure and strip the trailing
+      // marker bits
+
+      return sei.payload.subarray(8, sei.payload.length - 1);
+    }; // see CEA-708-D, section 4.4
+
+    var parseCaptionPackets = function (pts, userData) {
+      var results = [],
+        i,
+        count,
+        offset,
+        data; // if this is just filler, return immediately
+
+      if (!(userData[0] & 0x40)) {
+        return results;
+      } // parse out the cc_data_1 and cc_data_2 fields
+
+      count = userData[0] & 0x1f;
+      for (i = 0; i < count; i++) {
+        offset = i * 3;
+        data = {
+          type: userData[offset + 2] & 0x03,
+          pts: pts
+        }; // capture cc data when cc_valid is 1
+
+        if (userData[offset + 2] & 0x04) {
+          data.ccData = userData[offset + 3] << 8 | userData[offset + 4];
+          results.push(data);
+        }
+      }
+      return results;
+    };
+    var discardEmulationPreventionBytes$1 = function (data) {
+      var length = data.byteLength,
+        emulationPreventionBytesPositions = [],
+        i = 1,
+        newLength,
+        newData; // Find all `Emulation Prevention Bytes`
+
+      while (i < length - 2) {
+        if (data[i] === 0 && data[i + 1] === 0 && data[i + 2] === 0x03) {
+          emulationPreventionBytesPositions.push(i + 2);
+          i += 2;
+        } else {
+          i++;
+        }
+      } // If no Emulation Prevention Bytes were found just return the original
+      // array
+
+      if (emulationPreventionBytesPositions.length === 0) {
+        return data;
+      } // Create a new array to hold the NAL unit data
+
+      newLength = length - emulationPreventionBytesPositions.length;
+      newData = new Uint8Array(newLength);
+      var sourceIndex = 0;
+      for (i = 0; i < newLength; sourceIndex++, i++) {
+        if (sourceIndex === emulationPreventionBytesPositions[0]) {
+          // Skip this byte
+          sourceIndex++; // Remove this position index
+
+          emulationPreventionBytesPositions.shift();
+        }
+        newData[i] = data[sourceIndex];
+      }
+      return newData;
+    }; // exports
+
+    var captionPacketParser = {
+      parseSei: parseSei,
+      parseUserData: parseUserData,
+      parseCaptionPackets: parseCaptionPackets,
+      discardEmulationPreventionBytes: discardEmulationPreventionBytes$1,
+      USER_DATA_REGISTERED_ITU_T_T35: USER_DATA_REGISTERED_ITU_T_T35
+    };
+    /**
+     * mux.js
+     *
+     * Copyright (c) Brightcove
+     * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE
+     *
+     * Reads in-band caption information from a video elementary
+     * stream. Captions must follow the CEA-708 standard for injection
+     * into an MPEG-2 transport streams.
+     * @see https://en.wikipedia.org/wiki/CEA-708
+     * @see https://www.gpo.gov/fdsys/pkg/CFR-2007-title47-vol1/pdf/CFR-2007-title47-vol1-sec15-119.pdf
+     */
+    // Link To Transport
+    // -----------------
+
+    var Stream$7 = stream;
+    var cea708Parser = captionPacketParser;
+    var CaptionStream$2 = function (options) {
+      options = options || {};
+      CaptionStream$2.prototype.init.call(this); // parse708captions flag, default to true
+
+      this.parse708captions_ = typeof options.parse708captions === 'boolean' ? options.parse708captions : true;
+      this.captionPackets_ = [];
+      this.ccStreams_ = [new Cea608Stream(0, 0),
+      // eslint-disable-line no-use-before-define
+      new Cea608Stream(0, 1),
+      // eslint-disable-line no-use-before-define
+      new Cea608Stream(1, 0),
+      // eslint-disable-line no-use-before-define
+      new Cea608Stream(1, 1) // eslint-disable-line no-use-before-define
+      ];
+
+      if (this.parse708captions_) {
+        this.cc708Stream_ = new Cea708Stream({
+          captionServices: options.captionServices
+        }); // eslint-disable-line no-use-before-define
+      }
+
+      this.reset(); // forward data and done events from CCs to this CaptionStream
+
+      this.ccStreams_.forEach(function (cc) {
+        cc.on('data', this.trigger.bind(this, 'data'));
+        cc.on('partialdone', this.trigger.bind(this, 'partialdone'));
+        cc.on('done', this.trigger.bind(this, 'done'));
+      }, this);
+      if (this.parse708captions_) {
+        this.cc708Stream_.on('data', this.trigger.bind(this, 'data'));
+        this.cc708Stream_.on('partialdone', this.trigger.bind(this, 'partialdone'));
+        this.cc708Stream_.on('done', this.trigger.bind(this, 'done'));
+      }
+    };
+    CaptionStream$2.prototype = new Stream$7();
+    CaptionStream$2.prototype.push = function (event) {
+      var sei, userData, newCaptionPackets; // only examine SEI NALs
+
+      if (event.nalUnitType !== 'sei_rbsp') {
+        return;
+      } // parse the sei
+
+      sei = cea708Parser.parseSei(event.escapedRBSP); // no payload data, skip
+
+      if (!sei.payload) {
+        return;
+      } // ignore everything but user_data_registered_itu_t_t35
+
+      if (sei.payloadType !== cea708Parser.USER_DATA_REGISTERED_ITU_T_T35) {
+        return;
+      } // parse out the user data payload
+
+      userData = cea708Parser.parseUserData(sei); // ignore unrecognized userData
+
+      if (!userData) {
+        return;
+      } // Sometimes, the same segment # will be downloaded twice. To stop the
+      // caption data from being processed twice, we track the latest dts we've
+      // received and ignore everything with a dts before that. However, since
+      // data for a specific dts can be split across packets on either side of
+      // a segment boundary, we need to make sure we *don't* ignore the packets
+      // from the *next* segment that have dts === this.latestDts_. By constantly
+      // tracking the number of packets received with dts === this.latestDts_, we
+      // know how many should be ignored once we start receiving duplicates.
+
+      if (event.dts < this.latestDts_) {
+        // We've started getting older data, so set the flag.
+        this.ignoreNextEqualDts_ = true;
+        return;
+      } else if (event.dts === this.latestDts_ && this.ignoreNextEqualDts_) {
+        this.numSameDts_--;
+        if (!this.numSameDts_) {
+          // We've received the last duplicate packet, time to start processing again
+          this.ignoreNextEqualDts_ = false;
+        }
+        return;
+      } // parse out CC data packets and save them for later
+
+      newCaptionPackets = cea708Parser.parseCaptionPackets(event.pts, userData);
+      this.captionPackets_ = this.captionPackets_.concat(newCaptionPackets);
+      if (this.latestDts_ !== event.dts) {
+        this.numSameDts_ = 0;
+      }
+      this.numSameDts_++;
+      this.latestDts_ = event.dts;
+    };
+    CaptionStream$2.prototype.flushCCStreams = function (flushType) {
+      this.ccStreams_.forEach(function (cc) {
+        return flushType === 'flush' ? cc.flush() : cc.partialFlush();
+      }, this);
+    };
+    CaptionStream$2.prototype.flushStream = function (flushType) {
+      // make sure we actually parsed captions before proceeding
+      if (!this.captionPackets_.length) {
+        this.flushCCStreams(flushType);
+        return;
+      } // In Chrome, the Array#sort function is not stable so add a
+      // presortIndex that we can use to ensure we get a stable-sort
+
+      this.captionPackets_.forEach(function (elem, idx) {
+        elem.presortIndex = idx;
+      }); // sort caption byte-pairs based on their PTS values
+
+      this.captionPackets_.sort(function (a, b) {
+        if (a.pts === b.pts) {
+          return a.presortIndex - b.presortIndex;
+        }
+        return a.pts - b.pts;
+      });
+      this.captionPackets_.forEach(function (packet) {
+        if (packet.type < 2) {
+          // Dispatch packet to the right Cea608Stream
+          this.dispatchCea608Packet(packet);
+        } else {
+          // Dispatch packet to the Cea708Stream
+          this.dispatchCea708Packet(packet);
+        }
+      }, this);
+      this.captionPackets_.length = 0;
+      this.flushCCStreams(flushType);
+    };
+    CaptionStream$2.prototype.flush = function () {
+      return this.flushStream('flush');
+    }; // Only called if handling partial data
+
+    CaptionStream$2.prototype.partialFlush = function () {
+      return this.flushStream('partialFlush');
+    };
+    CaptionStream$2.prototype.reset = function () {
+      this.latestDts_ = null;
+      this.ignoreNextEqualDts_ = false;
+      this.numSameDts_ = 0;
+      this.activeCea608Channel_ = [null, null];
+      this.ccStreams_.forEach(function (ccStream) {
+        ccStream.reset();
+      });
+    }; // From the CEA-608 spec:
+
+    /*
+     * When XDS sub-packets are interleaved with other services, the end of each sub-packet shall be followed
+     * by a control pair to change to a different service. When any of the control codes from 0x10 to 0x1F is
+     * used to begin a control code pair, it indicates the return to captioning or Text data. The control code pair
+     * and subsequent data should then be processed according to the FCC rules. It may be necessary for the
+     * line 21 data encoder to automatically insert a control code pair (i.e. RCL, RU2, RU3, RU4, RDC, or RTD)
+     * to switch to captioning or Text.
+    */
+    // With that in mind, we ignore any data between an XDS control code and a
+    // subsequent closed-captioning control code.
+
+    CaptionStream$2.prototype.dispatchCea608Packet = function (packet) {
+      // NOTE: packet.type is the CEA608 field
+      if (this.setsTextOrXDSActive(packet)) {
+        this.activeCea608Channel_[packet.type] = null;
+      } else if (this.setsChannel1Active(packet)) {
+        this.activeCea608Channel_[packet.type] = 0;
+      } else if (this.setsChannel2Active(packet)) {
+        this.activeCea608Channel_[packet.type] = 1;
+      }
+      if (this.activeCea608Channel_[packet.type] === null) {
+        // If we haven't received anything to set the active channel, or the
+        // packets are Text/XDS data, discard the data; we don't want jumbled
+        // captions
+        return;
+      }
+      this.ccStreams_[(packet.type << 1) + this.activeCea608Channel_[packet.type]].push(packet);
+    };
+    CaptionStream$2.prototype.setsChannel1Active = function (packet) {
+      return (packet.ccData & 0x7800) === 0x1000;
+    };
+    CaptionStream$2.prototype.setsChannel2Active = function (packet) {
+      return (packet.ccData & 0x7800) === 0x1800;
+    };
+    CaptionStream$2.prototype.setsTextOrXDSActive = function (packet) {
+      return (packet.ccData & 0x7100) === 0x0100 || (packet.ccData & 0x78fe) === 0x102a || (packet.ccData & 0x78fe) === 0x182a;
+    };
+    CaptionStream$2.prototype.dispatchCea708Packet = function (packet) {
+      if (this.parse708captions_) {
+        this.cc708Stream_.push(packet);
+      }
+    }; // ----------------------
+    // Session to Application
+    // ----------------------
+    // This hash maps special and extended character codes to their
+    // proper Unicode equivalent. The first one-byte key is just a
+    // non-standard character code. The two-byte keys that follow are
+    // the extended CEA708 character codes, along with the preceding
+    // 0x10 extended character byte to distinguish these codes from
+    // non-extended character codes. Every CEA708 character code that
+    // is not in this object maps directly to a standard unicode
+    // character code.
+    // The transparent space and non-breaking transparent space are
+    // technically not fully supported since there is no code to
+    // make them transparent, so they have normal non-transparent
+    // stand-ins.
+    // The special closed caption (CC) character isn't a standard
+    // unicode character, so a fairly similar unicode character was
+    // chosen in it's place.
+
+    var CHARACTER_TRANSLATION_708 = {
+      0x7f: 0x266a,
+      // ♪
+      0x1020: 0x20,
+      // Transparent Space
+      0x1021: 0xa0,
+      // Nob-breaking Transparent Space
+      0x1025: 0x2026,
+      // …
+      0x102a: 0x0160,
+      // Š
+      0x102c: 0x0152,
+      // Œ
+      0x1030: 0x2588,
+      // █
+      0x1031: 0x2018,
+      // ‘
+      0x1032: 0x2019,
+      // ’
+      0x1033: 0x201c,
+      // “
+      0x1034: 0x201d,
+      // ”
+      0x1035: 0x2022,
+      // •
+      0x1039: 0x2122,
+      // ™
+      0x103a: 0x0161,
+      // š
+      0x103c: 0x0153,
+      // œ
+      0x103d: 0x2120,
+      // ℠
+      0x103f: 0x0178,
+      // Ÿ
+      0x1076: 0x215b,
+      // ⅛
+      0x1077: 0x215c,
+      // ⅜
+      0x1078: 0x215d,
+      // ⅝
+      0x1079: 0x215e,
+      // ⅞
+      0x107a: 0x23d0,
+      // ⏐
+      0x107b: 0x23a4,
+      // ⎤
+      0x107c: 0x23a3,
+      // ⎣
+      0x107d: 0x23af,
+      // ⎯
+      0x107e: 0x23a6,
+      // ⎦
+      0x107f: 0x23a1,
+      // ⎡
+      0x10a0: 0x3138 // ㄸ (CC char)
+    };
+
+    var get708CharFromCode = function (code) {
+      var newCode = CHARACTER_TRANSLATION_708[code] || code;
+      if (code & 0x1000 && code === newCode) {
+        // Invalid extended code
+        return '';
+      }
+      return String.fromCharCode(newCode);
+    };
+    var within708TextBlock = function (b) {
+      return 0x20 <= b && b <= 0x7f || 0xa0 <= b && b <= 0xff;
+    };
+    var Cea708Window = function (windowNum) {
+      this.windowNum = windowNum;
+      this.reset();
+    };
+    Cea708Window.prototype.reset = function () {
+      this.clearText();
+      this.pendingNewLine = false;
+      this.winAttr = {};
+      this.penAttr = {};
+      this.penLoc = {};
+      this.penColor = {}; // These default values are arbitrary,
+      // defineWindow will usually override them
+
+      this.visible = 0;
+      this.rowLock = 0;
+      this.columnLock = 0;
+      this.priority = 0;
+      this.relativePositioning = 0;
+      this.anchorVertical = 0;
+      this.anchorHorizontal = 0;
+      this.anchorPoint = 0;
+      this.rowCount = 1;
+      this.virtualRowCount = this.rowCount + 1;
+      this.columnCount = 41;
+      this.windowStyle = 0;
+      this.penStyle = 0;
+    };
+    Cea708Window.prototype.getText = function () {
+      return this.rows.join('\n');
+    };
+    Cea708Window.prototype.clearText = function () {
+      this.rows = [''];
+      this.rowIdx = 0;
+    };
+    Cea708Window.prototype.newLine = function (pts) {
+      if (this.rows.length >= this.virtualRowCount && typeof this.beforeRowOverflow === 'function') {
+        this.beforeRowOverflow(pts);
+      }
+      if (this.rows.length > 0) {
+        this.rows.push('');
+        this.rowIdx++;
+      } // Show all virtual rows since there's no visible scrolling
+
+      while (this.rows.length > this.virtualRowCount) {
+        this.rows.shift();
+        this.rowIdx--;
+      }
+    };
+    Cea708Window.prototype.isEmpty = function () {
+      if (this.rows.length === 0) {
+        return true;
+      } else if (this.rows.length === 1) {
+        return this.rows[0] === '';
+      }
+      return false;
+    };
+    Cea708Window.prototype.addText = function (text) {
+      this.rows[this.rowIdx] += text;
+    };
+    Cea708Window.prototype.backspace = function () {
+      if (!this.isEmpty()) {
+        var row = this.rows[this.rowIdx];
+        this.rows[this.rowIdx] = row.substr(0, row.length - 1);
+      }
+    };
+    var Cea708Service = function (serviceNum, encoding, stream) {
+      this.serviceNum = serviceNum;
+      this.text = '';
+      this.currentWindow = new Cea708Window(-1);
+      this.windows = [];
+      this.stream = stream; // Try to setup a TextDecoder if an `encoding` value was provided
+
+      if (typeof encoding === 'string') {
+        this.createTextDecoder(encoding);
+      }
+    };
+    /**
+     * Initialize service windows
+     * Must be run before service use
+     *
+     * @param  {Integer}  pts               PTS value
+     * @param  {Function} beforeRowOverflow Function to execute before row overflow of a window
+     */
+
+    Cea708Service.prototype.init = function (pts, beforeRowOverflow) {
+      this.startPts = pts;
+      for (var win = 0; win < 8; win++) {
+        this.windows[win] = new Cea708Window(win);
+        if (typeof beforeRowOverflow === 'function') {
+          this.windows[win].beforeRowOverflow = beforeRowOverflow;
+        }
+      }
+    };
+    /**
+     * Set current window of service to be affected by commands
+     *
+     * @param  {Integer} windowNum Window number
+     */
+
+    Cea708Service.prototype.setCurrentWindow = function (windowNum) {
+      this.currentWindow = this.windows[windowNum];
+    };
+    /**
+     * Try to create a TextDecoder if it is natively supported
+     */
+
+    Cea708Service.prototype.createTextDecoder = function (encoding) {
+      if (typeof TextDecoder === 'undefined') {
+        this.stream.trigger('log', {
+          level: 'warn',
+          message: 'The `encoding` option is unsupported without TextDecoder support'
+        });
+      } else {
+        try {
+          this.textDecoder_ = new TextDecoder(encoding);
+        } catch (error) {
+          this.stream.trigger('log', {
+            level: 'warn',
+            message: 'TextDecoder could not be created with ' + encoding + ' encoding. ' + error
+          });
+        }
+      }
+    };
+    var Cea708Stream = function (options) {
+      options = options || {};
+      Cea708Stream.prototype.init.call(this);
+      var self = this;
+      var captionServices = options.captionServices || {};
+      var captionServiceEncodings = {};
+      var serviceProps; // Get service encodings from captionServices option block
+
+      Object.keys(captionServices).forEach(serviceName => {
+        serviceProps = captionServices[serviceName];
+        if (/^SERVICE/.test(serviceName)) {
+          captionServiceEncodings[serviceName] = serviceProps.encoding;
+        }
+      });
+      this.serviceEncodings = captionServiceEncodings;
+      this.current708Packet = null;
+      this.services = {};
+      this.push = function (packet) {
+        if (packet.type === 3) {
+          // 708 packet start
+          self.new708Packet();
+          self.add708Bytes(packet);
+        } else {
+          if (self.current708Packet === null) {
+            // This should only happen at the start of a file if there's no packet start.
+            self.new708Packet();
+          }
+          self.add708Bytes(packet);
+        }
+      };
+    };
+    Cea708Stream.prototype = new Stream$7();
+    /**
+     * Push current 708 packet, create new 708 packet.
+     */
+
+    Cea708Stream.prototype.new708Packet = function () {
+      if (this.current708Packet !== null) {
+        this.push708Packet();
+      }
+      this.current708Packet = {
+        data: [],
+        ptsVals: []
+      };
+    };
+    /**
+     * Add pts and both bytes from packet into current 708 packet.
+     */
+
+    Cea708Stream.prototype.add708Bytes = function (packet) {
+      var data = packet.ccData;
+      var byte0 = data >>> 8;
+      var byte1 = data & 0xff; // I would just keep a list of packets instead of bytes, but it isn't clear in the spec
+      // that service blocks will always line up with byte pairs.
+
+      this.current708Packet.ptsVals.push(packet.pts);
+      this.current708Packet.data.push(byte0);
+      this.current708Packet.data.push(byte1);
+    };
+    /**
+     * Parse completed 708 packet into service blocks and push each service block.
+     */
+
+    Cea708Stream.prototype.push708Packet = function () {
+      var packet708 = this.current708Packet;
+      var packetData = packet708.data;
+      var serviceNum = null;
+      var blockSize = null;
+      var i = 0;
+      var b = packetData[i++];
+      packet708.seq = b >> 6;
+      packet708.sizeCode = b & 0x3f; // 0b00111111;
+
+      for (; i < packetData.length; i++) {
+        b = packetData[i++];
+        serviceNum = b >> 5;
+        blockSize = b & 0x1f; // 0b00011111
+
+        if (serviceNum === 7 && blockSize > 0) {
+          // Extended service num
+          b = packetData[i++];
+          serviceNum = b;
+        }
+        this.pushServiceBlock(serviceNum, i, blockSize);
+        if (blockSize > 0) {
+          i += blockSize - 1;
+        }
+      }
+    };
+    /**
+     * Parse service block, execute commands, read text.
+     *
+     * Note: While many of these commands serve important purposes,
+     * many others just parse out the parameters or attributes, but
+     * nothing is done with them because this is not a full and complete
+     * implementation of the entire 708 spec.
+     *
+     * @param  {Integer} serviceNum Service number
+     * @param  {Integer} start      Start index of the 708 packet data
+     * @param  {Integer} size       Block size
+     */
+
+    Cea708Stream.prototype.pushServiceBlock = function (serviceNum, start, size) {
+      var b;
+      var i = start;
+      var packetData = this.current708Packet.data;
+      var service = this.services[serviceNum];
+      if (!service) {
+        service = this.initService(serviceNum, i);
+      }
+      for (; i < start + size && i < packetData.length; i++) {
+        b = packetData[i];
+        if (within708TextBlock(b)) {
+          i = this.handleText(i, service);
+        } else if (b === 0x18) {
+          i = this.multiByteCharacter(i, service);
+        } else if (b === 0x10) {
+          i = this.extendedCommands(i, service);
+        } else if (0x80 <= b && b <= 0x87) {
+          i = this.setCurrentWindow(i, service);
+        } else if (0x98 <= b && b <= 0x9f) {
+          i = this.defineWindow(i, service);
+        } else if (b === 0x88) {
+          i = this.clearWindows(i, service);
+        } else if (b === 0x8c) {
+          i = this.deleteWindows(i, service);
+        } else if (b === 0x89) {
+          i = this.displayWindows(i, service);
+        } else if (b === 0x8a) {
+          i = this.hideWindows(i, service);
+        } else if (b === 0x8b) {
+          i = this.toggleWindows(i, service);
+        } else if (b === 0x97) {
+          i = this.setWindowAttributes(i, service);
+        } else if (b === 0x90) {
+          i = this.setPenAttributes(i, service);
+        } else if (b === 0x91) {
+          i = this.setPenColor(i, service);
+        } else if (b === 0x92) {
+          i = this.setPenLocation(i, service);
+        } else if (b === 0x8f) {
+          service = this.reset(i, service);
+        } else if (b === 0x08) {
+          // BS: Backspace
+          service.currentWindow.backspace();
+        } else if (b === 0x0c) {
+          // FF: Form feed
+          service.currentWindow.clearText();
+        } else if (b === 0x0d) {
+          // CR: Carriage return
+          service.currentWindow.pendingNewLine = true;
+        } else if (b === 0x0e) {
+          // HCR: Horizontal carriage return
+          service.currentWindow.clearText();
+        } else if (b === 0x8d) {
+          // DLY: Delay, nothing to do
+          i++;
+        } else ;
+      }
+    };
+    /**
+     * Execute an extended command
+     *
+     * @param  {Integer} i        Current index in the 708 packet
+     * @param  {Service} service  The service object to be affected
+     * @return {Integer}          New index after parsing
+     */
+
+    Cea708Stream.prototype.extendedCommands = function (i, service) {
+      var packetData = this.current708Packet.data;
+      var b = packetData[++i];
+      if (within708TextBlock(b)) {
+        i = this.handleText(i, service, {
+          isExtended: true
+        });
+      }
+      return i;
+    };
+    /**
+     * Get PTS value of a given byte index
+     *
+     * @param  {Integer} byteIndex  Index of the byte
+     * @return {Integer}            PTS
+     */
+
+    Cea708Stream.prototype.getPts = function (byteIndex) {
+      // There's 1 pts value per 2 bytes
+      return this.current708Packet.ptsVals[Math.floor(byteIndex / 2)];
+    };
+    /**
+     * Initializes a service
+     *
+     * @param  {Integer} serviceNum Service number
+     * @return {Service}            Initialized service object
+     */
+
+    Cea708Stream.prototype.initService = function (serviceNum, i) {
+      var serviceName = 'SERVICE' + serviceNum;
+      var self = this;
+      var serviceName;
+      var encoding;
+      if (serviceName in this.serviceEncodings) {
+        encoding = this.serviceEncodings[serviceName];
+      }
+      this.services[serviceNum] = new Cea708Service(serviceNum, encoding, self);
+      this.services[serviceNum].init(this.getPts(i), function (pts) {
+        self.flushDisplayed(pts, self.services[serviceNum]);
+      });
+      return this.services[serviceNum];
+    };
+    /**
+     * Execute text writing to current window
+     *
+     * @param  {Integer} i        Current index in the 708 packet
+     * @param  {Service} service  The service object to be affected
+     * @return {Integer}          New index after parsing
+     */
+
+    Cea708Stream.prototype.handleText = function (i, service, options) {
+      var isExtended = options && options.isExtended;
+      var isMultiByte = options && options.isMultiByte;
+      var packetData = this.current708Packet.data;
+      var extended = isExtended ? 0x1000 : 0x0000;
+      var currentByte = packetData[i];
+      var nextByte = packetData[i + 1];
+      var win = service.currentWindow;
+      var char;
+      var charCodeArray; // Converts an array of bytes to a unicode hex string.
+
+      function toHexString(byteArray) {
+        return byteArray.map(byte => {
+          return ('0' + (byte & 0xFF).toString(16)).slice(-2);
+        }).join('');
+      }
+      if (isMultiByte) {
+        charCodeArray = [currentByte, nextByte];
+        i++;
+      } else {
+        charCodeArray = [currentByte];
+      } // Use the TextDecoder if one was created for this service
+
+      if (service.textDecoder_ && !isExtended) {
+        char = service.textDecoder_.decode(new Uint8Array(charCodeArray));
+      } else {
+        // We assume any multi-byte char without a decoder is unicode.
+        if (isMultiByte) {
+          const unicode = toHexString(charCodeArray); // Takes a unicode hex string and creates a single character.
+
+          char = String.fromCharCode(parseInt(unicode, 16));
+        } else {
+          char = get708CharFromCode(extended | currentByte);
+        }
+      }
+      if (win.pendingNewLine && !win.isEmpty()) {
+        win.newLine(this.getPts(i));
+      }
+      win.pendingNewLine = false;
+      win.addText(char);
+      return i;
+    };
+    /**
+     * Handle decoding of multibyte character
+     *
+     * @param  {Integer} i        Current index in the 708 packet
+     * @param  {Service} service  The service object to be affected
+     * @return {Integer}          New index after parsing
+     */
+
+    Cea708Stream.prototype.multiByteCharacter = function (i, service) {
+      var packetData = this.current708Packet.data;
+      var firstByte = packetData[i + 1];
+      var secondByte = packetData[i + 2];
+      if (within708TextBlock(firstByte) && within708TextBlock(secondByte)) {
+        i = this.handleText(++i, service, {
+          isMultiByte: true
+        });
+      }
+      return i;
+    };
+    /**
+     * Parse and execute the CW# command.
+     *
+     * Set the current window.
+     *
+     * @param  {Integer} i        Current index in the 708 packet
+     * @param  {Service} service  The service object to be affected
+     * @return {Integer}          New index after parsing
+     */
+
+    Cea708Stream.prototype.setCurrentWindow = function (i, service) {
+      var packetData = this.current708Packet.data;
+      var b = packetData[i];
+      var windowNum = b & 0x07;
+      service.setCurrentWindow(windowNum);
+      return i;
+    };
+    /**
+     * Parse and execute the DF# command.
+     *
+     * Define a window and set it as the current window.
+     *
+     * @param  {Integer} i        Current index in the 708 packet
+     * @param  {Service} service  The service object to be affected
+     * @return {Integer}          New index after parsing
+     */
+
+    Cea708Stream.prototype.defineWindow = function (i, service) {
+      var packetData = this.current708Packet.data;
+      var b = packetData[i];
+      var windowNum = b & 0x07;
+      service.setCurrentWindow(windowNum);
+      var win = service.currentWindow;
+      b = packetData[++i];
+      win.visible = (b & 0x20) >> 5; // v
+
+      win.rowLock = (b & 0x10) >> 4; // rl
+
+      win.columnLock = (b & 0x08) >> 3; // cl
+
+      win.priority = b & 0x07; // p
+
+      b = packetData[++i];
+      win.relativePositioning = (b & 0x80) >> 7; // rp
+
+      win.anchorVertical = b & 0x7f; // av
+
+      b = packetData[++i];
+      win.anchorHorizontal = b; // ah
+
+      b = packetData[++i];
+      win.anchorPoint = (b & 0xf0) >> 4; // ap
+
+      win.rowCount = b & 0x0f; // rc
+
+      b = packetData[++i];
+      win.columnCount = b & 0x3f; // cc
+
+      b = packetData[++i];
+      win.windowStyle = (b & 0x38) >> 3; // ws
+
+      win.penStyle = b & 0x07; // ps
+      // The spec says there are (rowCount+1) "virtual rows"
+
+      win.virtualRowCount = win.rowCount + 1;
+      return i;
+    };
+    /**
+     * Parse and execute the SWA command.
+     *
+     * Set attributes of the current window.
+     *
+     * @param  {Integer} i        Current index in the 708 packet
+     * @param  {Service} service  The service object to be affected
+     * @return {Integer}          New index after parsing
+     */
+
+    Cea708Stream.prototype.setWindowAttributes = function (i, service) {
+      var packetData = this.current708Packet.data;
+      var b = packetData[i];
+      var winAttr = service.currentWindow.winAttr;
+      b = packetData[++i];
+      winAttr.fillOpacity = (b & 0xc0) >> 6; // fo
+
+      winAttr.fillRed = (b & 0x30) >> 4; // fr
+
+      winAttr.fillGreen = (b & 0x0c) >> 2; // fg
+
+      winAttr.fillBlue = b & 0x03; // fb
+
+      b = packetData[++i];
+      winAttr.borderType = (b & 0xc0) >> 6; // bt
+
+      winAttr.borderRed = (b & 0x30) >> 4; // br
+
+      winAttr.borderGreen = (b & 0x0c) >> 2; // bg
+
+      winAttr.borderBlue = b & 0x03; // bb
+
+      b = packetData[++i];
+      winAttr.borderType += (b & 0x80) >> 5; // bt
+
+      winAttr.wordWrap = (b & 0x40) >> 6; // ww
+
+      winAttr.printDirection = (b & 0x30) >> 4; // pd
+
+      winAttr.scrollDirection = (b & 0x0c) >> 2; // sd
+
+      winAttr.justify = b & 0x03; // j
+
+      b = packetData[++i];
+      winAttr.effectSpeed = (b & 0xf0) >> 4; // es
+
+      winAttr.effectDirection = (b & 0x0c) >> 2; // ed
+
+      winAttr.displayEffect = b & 0x03; // de
+
+      return i;
+    };
+    /**
+     * Gather text from all displayed windows and push a caption to output.
+     *
+     * @param  {Integer} i        Current index in the 708 packet
+     * @param  {Service} service  The service object to be affected
+     */
+
+    Cea708Stream.prototype.flushDisplayed = function (pts, service) {
+      var displayedText = []; // TODO: Positioning not supported, displaying multiple windows will not necessarily
+      // display text in the correct order, but sample files so far have not shown any issue.
+
+      for (var winId = 0; winId < 8; winId++) {
+        if (service.windows[winId].visible && !service.windows[winId].isEmpty()) {
+          displayedText.push(service.windows[winId].getText());
+        }
+      }
+      service.endPts = pts;
+      service.text = displayedText.join('\n\n');
+      this.pushCaption(service);
+      service.startPts = pts;
+    };
+    /**
+     * Push a caption to output if the caption contains text.
+     *
+     * @param  {Service} service  The service object to be affected
+     */
+
+    Cea708Stream.prototype.pushCaption = function (service) {
+      if (service.text !== '') {
+        this.trigger('data', {
+          startPts: service.startPts,
+          endPts: service.endPts,
+          text: service.text,
+          stream: 'cc708_' + service.serviceNum
+        });
+        service.text = '';
+        service.startPts = service.endPts;
+      }
+    };
+    /**
+     * Parse and execute the DSW command.
+     *
+     * Set visible property of windows based on the parsed bitmask.
+     *
+     * @param  {Integer} i        Current index in the 708 packet
+     * @param  {Service} service  The service object to be affected
+     * @return {Integer}          New index after parsing
+     */
+
+    Cea708Stream.prototype.displayWindows = function (i, service) {
+      var packetData = this.current708Packet.data;
+      var b = packetData[++i];
+      var pts = this.getPts(i);
+      this.flushDisplayed(pts, service);
+      for (var winId = 0; winId < 8; winId++) {
+        if (b & 0x01 << winId) {
+          service.windows[winId].visible = 1;
+        }
+      }
+      return i;
+    };
+    /**
+     * Parse and execute the HDW command.
+     *
+     * Set visible property of windows based on the parsed bitmask.
+     *
+     * @param  {Integer} i        Current index in the 708 packet
+     * @param  {Service} service  The service object to be affected
+     * @return {Integer}          New index after parsing
+     */
+
+    Cea708Stream.prototype.hideWindows = function (i, service) {
+      var packetData = this.current708Packet.data;
+      var b = packetData[++i];
+      var pts = this.getPts(i);
+      this.flushDisplayed(pts, service);
+      for (var winId = 0; winId < 8; winId++) {
+        if (b & 0x01 << winId) {
+          service.windows[winId].visible = 0;
+        }
+      }
+      return i;
+    };
+    /**
+     * Parse and execute the TGW command.
+     *
+     * Set visible property of windows based on the parsed bitmask.
+     *
+     * @param  {Integer} i        Current index in the 708 packet
+     * @param  {Service} service  The service object to be affected
+     * @return {Integer}          New index after parsing
+     */
+
+    Cea708Stream.prototype.toggleWindows = function (i, service) {
+      var packetData = this.current708Packet.data;
+      var b = packetData[++i];
+      var pts = this.getPts(i);
+      this.flushDisplayed(pts, service);
+      for (var winId = 0; winId < 8; winId++) {
+        if (b & 0x01 << winId) {
+          service.windows[winId].visible ^= 1;
+        }
+      }
+      return i;
+    };
+    /**
+     * Parse and execute the CLW command.
+     *
+     * Clear text of windows based on the parsed bitmask.
+     *
+     * @param  {Integer} i        Current index in the 708 packet
+     * @param  {Service} service  The service object to be affected
+     * @return {Integer}          New index after parsing
+     */
+
+    Cea708Stream.prototype.clearWindows = function (i, service) {
+      var packetData = this.current708Packet.data;
+      var b = packetData[++i];
+      var pts = this.getPts(i);
+      this.flushDisplayed(pts, service);
+      for (var winId = 0; winId < 8; winId++) {
+        if (b & 0x01 << winId) {
+          service.windows[winId].clearText();
+        }
+      }
+      return i;
+    };
+    /**
+     * Parse and execute the DLW command.
+     *
+     * Re-initialize windows based on the parsed bitmask.
+     *
+     * @param  {Integer} i        Current index in the 708 packet
+     * @param  {Service} service  The service object to be affected
+     * @return {Integer}          New index after parsing
+     */
+
+    Cea708Stream.prototype.deleteWindows = function (i, service) {
+      var packetData = this.current708Packet.data;
+      var b = packetData[++i];
+      var pts = this.getPts(i);
+      this.flushDisplayed(pts, service);
+      for (var winId = 0; winId < 8; winId++) {
+        if (b & 0x01 << winId) {
+          service.windows[winId].reset();
+        }
+      }
+      return i;
+    };
+    /**
+     * Parse and execute the SPA command.
+     *
+     * Set pen attributes of the current window.
+     *
+     * @param  {Integer} i        Current index in the 708 packet
+     * @param  {Service} service  The service object to be affected
+     * @return {Integer}          New index after parsing
+     */
+
+    Cea708Stream.prototype.setPenAttributes = function (i, service) {
+      var packetData = this.current708Packet.data;
+      var b = packetData[i];
+      var penAttr = service.currentWindow.penAttr;
+      b = packetData[++i];
+      penAttr.textTag = (b & 0xf0) >> 4; // tt
+
+      penAttr.offset = (b & 0x0c) >> 2; // o
+
+      penAttr.penSize = b & 0x03; // s
+
+      b = packetData[++i];
+      penAttr.italics = (b & 0x80) >> 7; // i
+
+      penAttr.underline = (b & 0x40) >> 6; // u
+
+      penAttr.edgeType = (b & 0x38) >> 3; // et
+
+      penAttr.fontStyle = b & 0x07; // fs
+
+      return i;
+    };
+    /**
+     * Parse and execute the SPC command.
+     *
+     * Set pen color of the current window.
+     *
+     * @param  {Integer} i        Current index in the 708 packet
+     * @param  {Service} service  The service object to be affected
+     * @return {Integer}          New index after parsing
+     */
+
+    Cea708Stream.prototype.setPenColor = function (i, service) {
+      var packetData = this.current708Packet.data;
+      var b = packetData[i];
+      var penColor = service.currentWindow.penColor;
+      b = packetData[++i];
+      penColor.fgOpacity = (b & 0xc0) >> 6; // fo
+
+      penColor.fgRed = (b & 0x30) >> 4; // fr
+
+      penColor.fgGreen = (b & 0x0c) >> 2; // fg
+
+      penColor.fgBlue = b & 0x03; // fb
+
+      b = packetData[++i];
+      penColor.bgOpacity = (b & 0xc0) >> 6; // bo
+
+      penColor.bgRed = (b & 0x30) >> 4; // br
+
+      penColor.bgGreen = (b & 0x0c) >> 2; // bg
+
+      penColor.bgBlue = b & 0x03; // bb
+
+      b = packetData[++i];
+      penColor.edgeRed = (b & 0x30) >> 4; // er
+
+      penColor.edgeGreen = (b & 0x0c) >> 2; // eg
+
+      penColor.edgeBlue = b & 0x03; // eb
+
+      return i;
+    };
+    /**
+     * Parse and execute the SPL command.
+     *
+     * Set pen location of the current window.
+     *
+     * @param  {Integer} i        Current index in the 708 packet
+     * @param  {Service} service  The service object to be affected
+     * @return {Integer}          New index after parsing
+     */
+
+    Cea708Stream.prototype.setPenLocation = function (i, service) {
+      var packetData = this.current708Packet.data;
+      var b = packetData[i];
+      var penLoc = service.currentWindow.penLoc; // Positioning isn't really supported at the moment, so this essentially just inserts a linebreak
+
+      service.currentWindow.pendingNewLine = true;
+      b = packetData[++i];
+      penLoc.row = b & 0x0f; // r
+
+      b = packetData[++i];
+      penLoc.column = b & 0x3f; // c
+
+      return i;
+    };
+    /**
+     * Execute the RST command.
+     *
+     * Reset service to a clean slate. Re-initialize.
+     *
+     * @param  {Integer} i        Current index in the 708 packet
+     * @param  {Service} service  The service object to be affected
+     * @return {Service}          Re-initialized service
+     */
+
+    Cea708Stream.prototype.reset = function (i, service) {
+      var pts = this.getPts(i);
+      this.flushDisplayed(pts, service);
+      return this.initService(service.serviceNum, i);
+    }; // This hash maps non-ASCII, special, and extended character codes to their
+    // proper Unicode equivalent. The first keys that are only a single byte
+    // are the non-standard ASCII characters, which simply map the CEA608 byte
+    // to the standard ASCII/Unicode. The two-byte keys that follow are the CEA608
+    // character codes, but have their MSB bitmasked with 0x03 so that a lookup
+    // can be performed regardless of the field and data channel on which the
+    // character code was received.
+
+    var CHARACTER_TRANSLATION = {
+      0x2a: 0xe1,
+      // á
+      0x5c: 0xe9,
+      // é
+      0x5e: 0xed,
+      // í
+      0x5f: 0xf3,
+      // ó
+      0x60: 0xfa,
+      // ú
+      0x7b: 0xe7,
+      // ç
+      0x7c: 0xf7,
+      // ÷
+      0x7d: 0xd1,
+      // Ñ
+      0x7e: 0xf1,
+      // ñ
+      0x7f: 0x2588,
+      // █
+      0x0130: 0xae,
+      // ®
+      0x0131: 0xb0,
+      // °
+      0x0132: 0xbd,
+      // ½
+      0x0133: 0xbf,
+      // ¿
+      0x0134: 0x2122,
+      // ™
+      0x0135: 0xa2,
+      // ¢
+      0x0136: 0xa3,
+      // £
+      0x0137: 0x266a,
+      // ♪
+      0x0138: 0xe0,
+      // à
+      0x0139: 0xa0,
+      //
+      0x013a: 0xe8,
+      // è
+      0x013b: 0xe2,
+      // â
+      0x013c: 0xea,
+      // ê
+      0x013d: 0xee,
+      // î
+      0x013e: 0xf4,
+      // ô
+      0x013f: 0xfb,
+      // û
+      0x0220: 0xc1,
+      // Á
+      0x0221: 0xc9,
+      // É
+      0x0222: 0xd3,
+      // Ó
+      0x0223: 0xda,
+      // Ú
+      0x0224: 0xdc,
+      // Ü
+      0x0225: 0xfc,
+      // ü
+      0x0226: 0x2018,
+      // ‘
+      0x0227: 0xa1,
+      // ¡
+      0x0228: 0x2a,
+      // *
+      0x0229: 0x27,
+      // '
+      0x022a: 0x2014,
+      // —
+      0x022b: 0xa9,
+      // ©
+      0x022c: 0x2120,
+      // ℠
+      0x022d: 0x2022,
+      // •
+      0x022e: 0x201c,
+      // “
+      0x022f: 0x201d,
+      // ”
+      0x0230: 0xc0,
+      // À
+      0x0231: 0xc2,
+      // Â
+      0x0232: 0xc7,
+      // Ç
+      0x0233: 0xc8,
+      // È
+      0x0234: 0xca,
+      // Ê
+      0x0235: 0xcb,
+      // Ë
+      0x0236: 0xeb,
+      // ë
+      0x0237: 0xce,
+      // Î
+      0x0238: 0xcf,
+      // Ï
+      0x0239: 0xef,
+      // ï
+      0x023a: 0xd4,
+      // Ô
+      0x023b: 0xd9,
+      // Ù
+      0x023c: 0xf9,
+      // ù
+      0x023d: 0xdb,
+      // Û
+      0x023e: 0xab,
+      // «
+      0x023f: 0xbb,
+      // »
+      0x0320: 0xc3,
+      // Ã
+      0x0321: 0xe3,
+      // ã
+      0x0322: 0xcd,
+      // Í
+      0x0323: 0xcc,
+      // Ì
+      0x0324: 0xec,
+      // ì
+      0x0325: 0xd2,
+      // Ò
+      0x0326: 0xf2,
+      // ò
+      0x0327: 0xd5,
+      // Õ
+      0x0328: 0xf5,
+      // õ
+      0x0329: 0x7b,
+      // {
+      0x032a: 0x7d,
+      // }
+      0x032b: 0x5c,
+      // \
+      0x032c: 0x5e,
+      // ^
+      0x032d: 0x5f,
+      // _
+      0x032e: 0x7c,
+      // |
+      0x032f: 0x7e,
+      // ~
+      0x0330: 0xc4,
+      // Ä
+      0x0331: 0xe4,
+      // ä
+      0x0332: 0xd6,
+      // Ö
+      0x0333: 0xf6,
+      // ö
+      0x0334: 0xdf,
+      // ß
+      0x0335: 0xa5,
+      // ¥
+      0x0336: 0xa4,
+      // ¤
+      0x0337: 0x2502,
+      // │
+      0x0338: 0xc5,
+      // Å
+      0x0339: 0xe5,
+      // å
+      0x033a: 0xd8,
+      // Ø
+      0x033b: 0xf8,
+      // ø
+      0x033c: 0x250c,
+      // ┌
+      0x033d: 0x2510,
+      // ┐
+      0x033e: 0x2514,
+      // └
+      0x033f: 0x2518 // ┘
+    };
+
+    var getCharFromCode = function (code) {
+      if (code === null) {
+        return '';
+      }
+      code = CHARACTER_TRANSLATION[code] || code;
+      return String.fromCharCode(code);
+    }; // the index of the last row in a CEA-608 display buffer
+
+    var BOTTOM_ROW = 14; // This array is used for mapping PACs -> row #, since there's no way of
+    // getting it through bit logic.
+
+    var ROWS = [0x1100, 0x1120, 0x1200, 0x1220, 0x1500, 0x1520, 0x1600, 0x1620, 0x1700, 0x1720, 0x1000, 0x1300, 0x1320, 0x1400, 0x1420]; // CEA-608 captions are rendered onto a 34x15 matrix of character
+    // cells. The "bottom" row is the last element in the outer array.
+    // We keep track of positioning information as we go by storing the
+    // number of indentations and the tab offset in this buffer.
+
+    var createDisplayBuffer = function () {
+      var result = [],
+        i = BOTTOM_ROW + 1;
+      while (i--) {
+        result.push({
+          text: '',
+          indent: 0,
+          offset: 0
+        });
+      }
+      return result;
+    };
+    var Cea608Stream = function (field, dataChannel) {
+      Cea608Stream.prototype.init.call(this);
+      this.field_ = field || 0;
+      this.dataChannel_ = dataChannel || 0;
+      this.name_ = 'CC' + ((this.field_ << 1 | this.dataChannel_) + 1);
+      this.setConstants();
+      this.reset();
+      this.push = function (packet) {
+        var data, swap, char0, char1, text; // remove the parity bits
+
+        data = packet.ccData & 0x7f7f; // ignore duplicate control codes; the spec demands they're sent twice
+
+        if (data === this.lastControlCode_) {
+          this.lastControlCode_ = null;
+          return;
+        } // Store control codes
+
+        if ((data & 0xf000) === 0x1000) {
+          this.lastControlCode_ = data;
+        } else if (data !== this.PADDING_) {
+          this.lastControlCode_ = null;
+        }
+        char0 = data >>> 8;
+        char1 = data & 0xff;
+        if (data === this.PADDING_) {
+          return;
+        } else if (data === this.RESUME_CAPTION_LOADING_) {
+          this.mode_ = 'popOn';
+        } else if (data === this.END_OF_CAPTION_) {
+          // If an EOC is received while in paint-on mode, the displayed caption
+          // text should be swapped to non-displayed memory as if it was a pop-on
+          // caption. Because of that, we should explicitly switch back to pop-on
+          // mode
+          this.mode_ = 'popOn';
+          this.clearFormatting(packet.pts); // if a caption was being displayed, it's gone now
+
+          this.flushDisplayed(packet.pts); // flip memory
+
+          swap = this.displayed_;
+          this.displayed_ = this.nonDisplayed_;
+          this.nonDisplayed_ = swap; // start measuring the time to display the caption
+
+          this.startPts_ = packet.pts;
+        } else if (data === this.ROLL_UP_2_ROWS_) {
+          this.rollUpRows_ = 2;
+          this.setRollUp(packet.pts);
+        } else if (data === this.ROLL_UP_3_ROWS_) {
+          this.rollUpRows_ = 3;
+          this.setRollUp(packet.pts);
+        } else if (data === this.ROLL_UP_4_ROWS_) {
+          this.rollUpRows_ = 4;
+          this.setRollUp(packet.pts);
+        } else if (data === this.CARRIAGE_RETURN_) {
+          this.clearFormatting(packet.pts);
+          this.flushDisplayed(packet.pts);
+          this.shiftRowsUp_();
+          this.startPts_ = packet.pts;
+        } else if (data === this.BACKSPACE_) {
+          if (this.mode_ === 'popOn') {
+            this.nonDisplayed_[this.row_].text = this.nonDisplayed_[this.row_].text.slice(0, -1);
+          } else {
+            this.displayed_[this.row_].text = this.displayed_[this.row_].text.slice(0, -1);
+          }
+        } else if (data === this.ERASE_DISPLAYED_MEMORY_) {
+          this.flushDisplayed(packet.pts);
+          this.displayed_ = createDisplayBuffer();
+        } else if (data === this.ERASE_NON_DISPLAYED_MEMORY_) {
+          this.nonDisplayed_ = createDisplayBuffer();
+        } else if (data === this.RESUME_DIRECT_CAPTIONING_) {
+          if (this.mode_ !== 'paintOn') {
+            // NOTE: This should be removed when proper caption positioning is
+            // implemented
+            this.flushDisplayed(packet.pts);
+            this.displayed_ = createDisplayBuffer();
+          }
+          this.mode_ = 'paintOn';
+          this.startPts_ = packet.pts; // Append special characters to caption text
+        } else if (this.isSpecialCharacter(char0, char1)) {
+          // Bitmask char0 so that we can apply character transformations
+          // regardless of field and data channel.
+          // Then byte-shift to the left and OR with char1 so we can pass the
+          // entire character code to `getCharFromCode`.
+          char0 = (char0 & 0x03) << 8;
+          text = getCharFromCode(char0 | char1);
+          this[this.mode_](packet.pts, text);
+          this.column_++; // Append extended characters to caption text
+        } else if (this.isExtCharacter(char0, char1)) {
+          // Extended characters always follow their "non-extended" equivalents.
+          // IE if a "è" is desired, you'll always receive "eè"; non-compliant
+          // decoders are supposed to drop the "è", while compliant decoders
+          // backspace the "e" and insert "è".
+          // Delete the previous character
+          if (this.mode_ === 'popOn') {
+            this.nonDisplayed_[this.row_].text = this.nonDisplayed_[this.row_].text.slice(0, -1);
+          } else {
+            this.displayed_[this.row_].text = this.displayed_[this.row_].text.slice(0, -1);
+          } // Bitmask char0 so that we can apply character transformations
+          // regardless of field and data channel.
+          // Then byte-shift to the left and OR with char1 so we can pass the
+          // entire character code to `getCharFromCode`.
+
+          char0 = (char0 & 0x03) << 8;
+          text = getCharFromCode(char0 | char1);
+          this[this.mode_](packet.pts, text);
+          this.column_++; // Process mid-row codes
+        } else if (this.isMidRowCode(char0, char1)) {
+          // Attributes are not additive, so clear all formatting
+          this.clearFormatting(packet.pts); // According to the standard, mid-row codes
+          // should be replaced with spaces, so add one now
+
+          this[this.mode_](packet.pts, ' ');
+          this.column_++;
+          if ((char1 & 0xe) === 0xe) {
+            this.addFormatting(packet.pts, ['i']);
+          }
+          if ((char1 & 0x1) === 0x1) {
+            this.addFormatting(packet.pts, ['u']);
+          } // Detect offset control codes and adjust cursor
+        } else if (this.isOffsetControlCode(char0, char1)) {
+          // Cursor position is set by indent PAC (see below) in 4-column
+          // increments, with an additional offset code of 1-3 to reach any
+          // of the 32 columns specified by CEA-608. So all we need to do
+          // here is increment the column cursor by the given offset.
+          const offset = char1 & 0x03; // For an offest value 1-3, set the offset for that caption
+          // in the non-displayed array.
+
+          this.nonDisplayed_[this.row_].offset = offset;
+          this.column_ += offset; // Detect PACs (Preamble Address Codes)
+        } else if (this.isPAC(char0, char1)) {
+          // There's no logic for PAC -> row mapping, so we have to just
+          // find the row code in an array and use its index :(
+          var row = ROWS.indexOf(data & 0x1f20); // Configure the caption window if we're in roll-up mode
+
+          if (this.mode_ === 'rollUp') {
+            // This implies that the base row is incorrectly set.
+            // As per the recommendation in CEA-608(Base Row Implementation), defer to the number
+            // of roll-up rows set.
+            if (row - this.rollUpRows_ + 1 < 0) {
+              row = this.rollUpRows_ - 1;
+            }
+            this.setRollUp(packet.pts, row);
+          } // Ensure the row is between 0 and 14, otherwise use the most
+          // recent or default row.
+
+          if (row !== this.row_ && row >= 0 && row <= 14) {
+            // formatting is only persistent for current row
+            this.clearFormatting(packet.pts);
+            this.row_ = row;
+          } // All PACs can apply underline, so detect and apply
+          // (All odd-numbered second bytes set underline)
+
+          if (char1 & 0x1 && this.formatting_.indexOf('u') === -1) {
+            this.addFormatting(packet.pts, ['u']);
+          }
+          if ((data & 0x10) === 0x10) {
+            // We've got an indent level code. Each successive even number
+            // increments the column cursor by 4, so we can get the desired
+            // column position by bit-shifting to the right (to get n/2)
+            // and multiplying by 4.
+            const indentations = (data & 0xe) >> 1;
+            this.column_ = indentations * 4; // add to the number of indentations for positioning
+
+            this.nonDisplayed_[this.row_].indent += indentations;
+          }
+          if (this.isColorPAC(char1)) {
+            // it's a color code, though we only support white, which
+            // can be either normal or italicized. white italics can be
+            // either 0x4e or 0x6e depending on the row, so we just
+            // bitwise-and with 0xe to see if italics should be turned on
+            if ((char1 & 0xe) === 0xe) {
+              this.addFormatting(packet.pts, ['i']);
+            }
+          } // We have a normal character in char0, and possibly one in char1
+        } else if (this.isNormalChar(char0)) {
+          if (char1 === 0x00) {
+            char1 = null;
+          }
+          text = getCharFromCode(char0);
+          text += getCharFromCode(char1);
+          this[this.mode_](packet.pts, text);
+          this.column_ += text.length;
+        } // finish data processing
+      };
+    };
+
+    Cea608Stream.prototype = new Stream$7(); // Trigger a cue point that captures the current state of the
+    // display buffer
+
+    Cea608Stream.prototype.flushDisplayed = function (pts) {
+      const logWarning = index => {
+        this.trigger('log', {
+          level: 'warn',
+          message: 'Skipping a malformed 608 caption at index ' + index + '.'
+        });
+      };
+      const content = [];
+      this.displayed_.forEach((row, i) => {
+        if (row && row.text && row.text.length) {
+          try {
+            // remove spaces from the start and end of the string
+            row.text = row.text.trim();
+          } catch (e) {
+            // Ordinarily, this shouldn't happen. However, caption
+            // parsing errors should not throw exceptions and
+            // break playback.
+            logWarning(i);
+          } // See the below link for more details on the following fields:
+          // https://dvcs.w3.org/hg/text-tracks/raw-file/default/608toVTT/608toVTT.html#positioning-in-cea-608
+
+          if (row.text.length) {
+            content.push({
+              // The text to be displayed in the caption from this specific row, with whitespace removed.
+              text: row.text,
+              // Value between 1 and 15 representing the PAC row used to calculate line height.
+              line: i + 1,
+              // A number representing the indent position by percentage (CEA-608 PAC indent code).
+              // The value will be a number between 10 and 80. Offset is used to add an aditional
+              // value to the position if necessary.
+              position: 10 + Math.min(70, row.indent * 10) + row.offset * 2.5
+            });
+          }
+        } else if (row === undefined || row === null) {
+          logWarning(i);
+        }
+      });
+      if (content.length) {
+        this.trigger('data', {
+          startPts: this.startPts_,
+          endPts: pts,
+          content,
+          stream: this.name_
+        });
+      }
+    };
+    /**
+     * Zero out the data, used for startup and on seek
+     */
+
+    Cea608Stream.prototype.reset = function () {
+      this.mode_ = 'popOn'; // When in roll-up mode, the index of the last row that will
+      // actually display captions. If a caption is shifted to a row
+      // with a lower index than this, it is cleared from the display
+      // buffer
+
+      this.topRow_ = 0;
+      this.startPts_ = 0;
+      this.displayed_ = createDisplayBuffer();
+      this.nonDisplayed_ = createDisplayBuffer();
+      this.lastControlCode_ = null; // Track row and column for proper line-breaking and spacing
+
+      this.column_ = 0;
+      this.row_ = BOTTOM_ROW;
+      this.rollUpRows_ = 2; // This variable holds currently-applied formatting
+
+      this.formatting_ = [];
+    };
+    /**
+     * Sets up control code and related constants for this instance
+     */
+
+    Cea608Stream.prototype.setConstants = function () {
+      // The following attributes have these uses:
+      // ext_ :    char0 for mid-row codes, and the base for extended
+      //           chars (ext_+0, ext_+1, and ext_+2 are char0s for
+      //           extended codes)
+      // control_: char0 for control codes, except byte-shifted to the
+      //           left so that we can do this.control_ | CONTROL_CODE
+      // offset_:  char0 for tab offset codes
+      //
+      // It's also worth noting that control codes, and _only_ control codes,
+      // differ between field 1 and field2. Field 2 control codes are always
+      // their field 1 value plus 1. That's why there's the "| field" on the
+      // control value.
+      if (this.dataChannel_ === 0) {
+        this.BASE_ = 0x10;
+        this.EXT_ = 0x11;
+        this.CONTROL_ = (0x14 | this.field_) << 8;
+        this.OFFSET_ = 0x17;
+      } else if (this.dataChannel_ === 1) {
+        this.BASE_ = 0x18;
+        this.EXT_ = 0x19;
+        this.CONTROL_ = (0x1c | this.field_) << 8;
+        this.OFFSET_ = 0x1f;
+      } // Constants for the LSByte command codes recognized by Cea608Stream. This
+      // list is not exhaustive. For a more comprehensive listing and semantics see
+      // http://www.gpo.gov/fdsys/pkg/CFR-2010-title47-vol1/pdf/CFR-2010-title47-vol1-sec15-119.pdf
+      // Padding
+
+      this.PADDING_ = 0x0000; // Pop-on Mode
+
+      this.RESUME_CAPTION_LOADING_ = this.CONTROL_ | 0x20;
+      this.END_OF_CAPTION_ = this.CONTROL_ | 0x2f; // Roll-up Mode
+
+      this.ROLL_UP_2_ROWS_ = this.CONTROL_ | 0x25;
+      this.ROLL_UP_3_ROWS_ = this.CONTROL_ | 0x26;
+      this.ROLL_UP_4_ROWS_ = this.CONTROL_ | 0x27;
+      this.CARRIAGE_RETURN_ = this.CONTROL_ | 0x2d; // paint-on mode
+
+      this.RESUME_DIRECT_CAPTIONING_ = this.CONTROL_ | 0x29; // Erasure
+
+      this.BACKSPACE_ = this.CONTROL_ | 0x21;
+      this.ERASE_DISPLAYED_MEMORY_ = this.CONTROL_ | 0x2c;
+      this.ERASE_NON_DISPLAYED_MEMORY_ = this.CONTROL_ | 0x2e;
+    };
+    /**
+     * Detects if the 2-byte packet data is a special character
+     *
+     * Special characters have a second byte in the range 0x30 to 0x3f,
+     * with the first byte being 0x11 (for data channel 1) or 0x19 (for
+     * data channel 2).
+     *
+     * @param  {Integer} char0 The first byte
+     * @param  {Integer} char1 The second byte
+     * @return {Boolean}       Whether the 2 bytes are an special character
+     */
+
+    Cea608Stream.prototype.isSpecialCharacter = function (char0, char1) {
+      return char0 === this.EXT_ && char1 >= 0x30 && char1 <= 0x3f;
+    };
+    /**
+     * Detects if the 2-byte packet data is an extended character
+     *
+     * Extended characters have a second byte in the range 0x20 to 0x3f,
+     * with the first byte being 0x12 or 0x13 (for data channel 1) or
+     * 0x1a or 0x1b (for data channel 2).
+     *
+     * @param  {Integer} char0 The first byte
+     * @param  {Integer} char1 The second byte
+     * @return {Boolean}       Whether the 2 bytes are an extended character
+     */
+
+    Cea608Stream.prototype.isExtCharacter = function (char0, char1) {
+      return (char0 === this.EXT_ + 1 || char0 === this.EXT_ + 2) && char1 >= 0x20 && char1 <= 0x3f;
+    };
+    /**
+     * Detects if the 2-byte packet is a mid-row code
+     *
+     * Mid-row codes have a second byte in the range 0x20 to 0x2f, with
+     * the first byte being 0x11 (for data channel 1) or 0x19 (for data
+     * channel 2).
+     *
+     * @param  {Integer} char0 The first byte
+     * @param  {Integer} char1 The second byte
+     * @return {Boolean}       Whether the 2 bytes are a mid-row code
+     */
+
+    Cea608Stream.prototype.isMidRowCode = function (char0, char1) {
+      return char0 === this.EXT_ && char1 >= 0x20 && char1 <= 0x2f;
+    };
+    /**
+     * Detects if the 2-byte packet is an offset control code
+     *
+     * Offset control codes have a second byte in the range 0x21 to 0x23,
+     * with the first byte being 0x17 (for data channel 1) or 0x1f (for
+     * data channel 2).
+     *
+     * @param  {Integer} char0 The first byte
+     * @param  {Integer} char1 The second byte
+     * @return {Boolean}       Whether the 2 bytes are an offset control code
+     */
+
+    Cea608Stream.prototype.isOffsetControlCode = function (char0, char1) {
+      return char0 === this.OFFSET_ && char1 >= 0x21 && char1 <= 0x23;
+    };
+    /**
+     * Detects if the 2-byte packet is a Preamble Address Code
+     *
+     * PACs have a first byte in the range 0x10 to 0x17 (for data channel 1)
+     * or 0x18 to 0x1f (for data channel 2), with the second byte in the
+     * range 0x40 to 0x7f.
+     *
+     * @param  {Integer} char0 The first byte
+     * @param  {Integer} char1 The second byte
+     * @return {Boolean}       Whether the 2 bytes are a PAC
+     */
+
+    Cea608Stream.prototype.isPAC = function (char0, char1) {
+      return char0 >= this.BASE_ && char0 < this.BASE_ + 8 && char1 >= 0x40 && char1 <= 0x7f;
+    };
+    /**
+     * Detects if a packet's second byte is in the range of a PAC color code
+     *
+     * PAC color codes have the second byte be in the range 0x40 to 0x4f, or
+     * 0x60 to 0x6f.
+     *
+     * @param  {Integer} char1 The second byte
+     * @return {Boolean}       Whether the byte is a color PAC
+     */
+
+    Cea608Stream.prototype.isColorPAC = function (char1) {
+      return char1 >= 0x40 && char1 <= 0x4f || char1 >= 0x60 && char1 <= 0x7f;
+    };
+    /**
+     * Detects if a single byte is in the range of a normal character
+     *
+     * Normal text bytes are in the range 0x20 to 0x7f.
+     *
+     * @param  {Integer} char  The byte
+     * @return {Boolean}       Whether the byte is a normal character
+     */
+
+    Cea608Stream.prototype.isNormalChar = function (char) {
+      return char >= 0x20 && char <= 0x7f;
+    };
+    /**
+     * Configures roll-up
+     *
+     * @param  {Integer} pts         Current PTS
+     * @param  {Integer} newBaseRow  Used by PACs to slide the current window to
+     *                               a new position
+     */
+
+    Cea608Stream.prototype.setRollUp = function (pts, newBaseRow) {
+      // Reset the base row to the bottom row when switching modes
+      if (this.mode_ !== 'rollUp') {
+        this.row_ = BOTTOM_ROW;
+        this.mode_ = 'rollUp'; // Spec says to wipe memories when switching to roll-up
+
+        this.flushDisplayed(pts);
+        this.nonDisplayed_ = createDisplayBuffer();
+        this.displayed_ = createDisplayBuffer();
+      }
+      if (newBaseRow !== undefined && newBaseRow !== this.row_) {
+        // move currently displayed captions (up or down) to the new base row
+        for (var i = 0; i < this.rollUpRows_; i++) {
+          this.displayed_[newBaseRow - i] = this.displayed_[this.row_ - i];
+          this.displayed_[this.row_ - i] = {
+            text: '',
+            indent: 0,
+            offset: 0
+          };
+        }
+      }
+      if (newBaseRow === undefined) {
+        newBaseRow = this.row_;
+      }
+      this.topRow_ = newBaseRow - this.rollUpRows_ + 1;
+    }; // Adds the opening HTML tag for the passed character to the caption text,
+    // and keeps track of it for later closing
+
+    Cea608Stream.prototype.addFormatting = function (pts, format) {
+      this.formatting_ = this.formatting_.concat(format);
+      var text = format.reduce(function (text, format) {
+        return text + '<' + format + '>';
+      }, '');
+      this[this.mode_](pts, text);
+    }; // Adds HTML closing tags for current formatting to caption text and
+    // clears remembered formatting
+
+    Cea608Stream.prototype.clearFormatting = function (pts) {
+      if (!this.formatting_.length) {
+        return;
+      }
+      var text = this.formatting_.reverse().reduce(function (text, format) {
+        return text + '</' + format + '>';
+      }, '');
+      this.formatting_ = [];
+      this[this.mode_](pts, text);
+    }; // Mode Implementations
+
+    Cea608Stream.prototype.popOn = function (pts, text) {
+      var baseRow = this.nonDisplayed_[this.row_].text; // buffer characters
+
+      baseRow += text;
+      this.nonDisplayed_[this.row_].text = baseRow;
+    };
+    Cea608Stream.prototype.rollUp = function (pts, text) {
+      var baseRow = this.displayed_[this.row_].text;
+      baseRow += text;
+      this.displayed_[this.row_].text = baseRow;
+    };
+    Cea608Stream.prototype.shiftRowsUp_ = function () {
+      var i; // clear out inactive rows
+
+      for (i = 0; i < this.topRow_; i++) {
+        this.displayed_[i] = {
+          text: '',
+          indent: 0,
+          offset: 0
+        };
+      }
+      for (i = this.row_ + 1; i < BOTTOM_ROW + 1; i++) {
+        this.displayed_[i] = {
+          text: '',
+          indent: 0,
+          offset: 0
+        };
+      } // shift displayed rows up
+
+      for (i = this.topRow_; i < this.row_; i++) {
+        this.displayed_[i] = this.displayed_[i + 1];
+      } // clear out the bottom row
+
+      this.displayed_[this.row_] = {
+        text: '',
+        indent: 0,
+        offset: 0
+      };
+    };
+    Cea608Stream.prototype.paintOn = function (pts, text) {
+      var baseRow = this.displayed_[this.row_].text;
+      baseRow += text;
+      this.displayed_[this.row_].text = baseRow;
+    }; // exports
+
+    var captionStream = {
+      CaptionStream: CaptionStream$2,
+      Cea608Stream: Cea608Stream,
+      Cea708Stream: Cea708Stream
+    };
+    /**
+     * mux.js
+     *
+     * Copyright (c) Brightcove
+     * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE
+     */
+
+    var streamTypes = {
+      H264_STREAM_TYPE: 0x1B,
+      ADTS_STREAM_TYPE: 0x0F,
+      METADATA_STREAM_TYPE: 0x15
+    };
+    /**
+     * mux.js
+     *
+     * Copyright (c) Brightcove
+     * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE
+     *
+     * Accepts program elementary stream (PES) data events and corrects
+     * decode and presentation time stamps to account for a rollover
+     * of the 33 bit value.
+     */
+
+    var Stream$6 = stream;
+    var MAX_TS = 8589934592;
+    var RO_THRESH = 4294967296;
+    var TYPE_SHARED = 'shared';
+    var handleRollover$1 = function (value, reference) {
+      var direction = 1;
+      if (value > reference) {
+        // If the current timestamp value is greater than our reference timestamp and we detect a
+        // timestamp rollover, this means the roll over is happening in the opposite direction.
+        // Example scenario: Enter a long stream/video just after a rollover occurred. The reference
+        // point will be set to a small number, e.g. 1. The user then seeks backwards over the
+        // rollover point. In loading this segment, the timestamp values will be very large,
+        // e.g. 2^33 - 1. Since this comes before the data we loaded previously, we want to adjust
+        // the time stamp to be `value - 2^33`.
+        direction = -1;
+      } // Note: A seek forwards or back that is greater than the RO_THRESH (2^32, ~13 hours) will
+      // cause an incorrect adjustment.
+
+      while (Math.abs(reference - value) > RO_THRESH) {
+        value += direction * MAX_TS;
+      }
+      return value;
+    };
+    var TimestampRolloverStream$1 = function (type) {
+      var lastDTS, referenceDTS;
+      TimestampRolloverStream$1.prototype.init.call(this); // The "shared" type is used in cases where a stream will contain muxed
+      // video and audio. We could use `undefined` here, but having a string
+      // makes debugging a little clearer.
+
+      this.type_ = type || TYPE_SHARED;
+      this.push = function (data) {
+        /**
+         * Rollover stream expects data from elementary stream.
+         * Elementary stream can push forward 2 types of data
+         * - Parsed Video/Audio/Timed-metadata PES (packetized elementary stream) packets
+         * - Tracks metadata from PMT (Program Map Table)
+         * Rollover stream expects pts/dts info to be available, since it stores lastDTS
+         * We should ignore non-PES packets since they may override lastDTS to undefined.
+         * lastDTS is important to signal the next segments
+         * about rollover from the previous segments.
+         */
+        if (data.type === 'metadata') {
+          this.trigger('data', data);
+          return;
+        } // Any "shared" rollover streams will accept _all_ data. Otherwise,
+        // streams will only accept data that matches their type.
+
+        if (this.type_ !== TYPE_SHARED && data.type !== this.type_) {
+          return;
+        }
+        if (referenceDTS === undefined) {
+          referenceDTS = data.dts;
+        }
+        data.dts = handleRollover$1(data.dts, referenceDTS);
+        data.pts = handleRollover$1(data.pts, referenceDTS);
+        lastDTS = data.dts;
+        this.trigger('data', data);
+      };
+      this.flush = function () {
+        referenceDTS = lastDTS;
+        this.trigger('done');
+      };
+      this.endTimeline = function () {
+        this.flush();
+        this.trigger('endedtimeline');
+      };
+      this.discontinuity = function () {
+        referenceDTS = void 0;
+        lastDTS = void 0;
+      };
+      this.reset = function () {
+        this.discontinuity();
+        this.trigger('reset');
+      };
+    };
+    TimestampRolloverStream$1.prototype = new Stream$6();
+    var timestampRolloverStream = {
+      TimestampRolloverStream: TimestampRolloverStream$1,
+      handleRollover: handleRollover$1
+    }; // Once IE11 support is dropped, this function should be removed.
+
+    var typedArrayIndexOf$1 = (typedArray, element, fromIndex) => {
+      if (!typedArray) {
+        return -1;
+      }
+      var currentIndex = fromIndex;
+      for (; currentIndex < typedArray.length; currentIndex++) {
+        if (typedArray[currentIndex] === element) {
+          return currentIndex;
+        }
+      }
+      return -1;
+    };
+    var typedArray = {
+      typedArrayIndexOf: typedArrayIndexOf$1
+    };
+    /**
+     * mux.js
+     *
+     * Copyright (c) Brightcove
+     * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE
+     *
+     * Tools for parsing ID3 frame data
+     * @see http://id3.org/id3v2.3.0
+     */
+
+    var typedArrayIndexOf = typedArray.typedArrayIndexOf,
+      // Frames that allow different types of text encoding contain a text
+      // encoding description byte [ID3v2.4.0 section 4.]
+      textEncodingDescriptionByte = {
+        Iso88591: 0x00,
+        // ISO-8859-1, terminated with \0.
+        Utf16: 0x01,
+        // UTF-16 encoded Unicode BOM, terminated with \0\0
+        Utf16be: 0x02,
+        // UTF-16BE encoded Unicode, without BOM, terminated with \0\0
+        Utf8: 0x03 // UTF-8 encoded Unicode, terminated with \0
+      },
+      // return a percent-encoded representation of the specified byte range
+      // @see http://en.wikipedia.org/wiki/Percent-encoding 
+      percentEncode$1 = function (bytes, start, end) {
+        var i,
+          result = '';
+        for (i = start; i < end; i++) {
+          result += '%' + ('00' + bytes[i].toString(16)).slice(-2);
+        }
+        return result;
+      },
+      // return the string representation of the specified byte range,
+      // interpreted as UTf-8.
+      parseUtf8 = function (bytes, start, end) {
+        return decodeURIComponent(percentEncode$1(bytes, start, end));
+      },
+      // return the string representation of the specified byte range,
+      // interpreted as ISO-8859-1.
+      parseIso88591$1 = function (bytes, start, end) {
+        return unescape(percentEncode$1(bytes, start, end)); // jshint ignore:line
+      },
+      parseSyncSafeInteger$1 = function (data) {
+        return data[0] << 21 | data[1] << 14 | data[2] << 7 | data[3];
+      },
+      frameParsers = {
+        'APIC': function (frame) {
+          var i = 1,
+            mimeTypeEndIndex,
+            descriptionEndIndex,
+            LINK_MIME_TYPE = '-->';
+          if (frame.data[0] !== textEncodingDescriptionByte.Utf8) {
+            // ignore frames with unrecognized character encodings
+            return;
+          } // parsing fields [ID3v2.4.0 section 4.14.]
+
+          mimeTypeEndIndex = typedArrayIndexOf(frame.data, 0, i);
+          if (mimeTypeEndIndex < 0) {
+            // malformed frame
+            return;
+          } // parsing Mime type field (terminated with \0)
+
+          frame.mimeType = parseIso88591$1(frame.data, i, mimeTypeEndIndex);
+          i = mimeTypeEndIndex + 1; // parsing 1-byte Picture Type field
+
+          frame.pictureType = frame.data[i];
+          i++;
+          descriptionEndIndex = typedArrayIndexOf(frame.data, 0, i);
+          if (descriptionEndIndex < 0) {
+            // malformed frame
+            return;
+          } // parsing Description field (terminated with \0)
+
+          frame.description = parseUtf8(frame.data, i, descriptionEndIndex);
+          i = descriptionEndIndex + 1;
+          if (frame.mimeType === LINK_MIME_TYPE) {
+            // parsing Picture Data field as URL (always represented as ISO-8859-1 [ID3v2.4.0 section 4.])
+            frame.url = parseIso88591$1(frame.data, i, frame.data.length);
+          } else {
+            // parsing Picture Data field as binary data
+            frame.pictureData = frame.data.subarray(i, frame.data.length);
+          }
+        },
+        'T*': function (frame) {
+          if (frame.data[0] !== textEncodingDescriptionByte.Utf8) {
+            // ignore frames with unrecognized character encodings
+            return;
+          } // parse text field, do not include null terminator in the frame value
+          // frames that allow different types of encoding contain terminated text [ID3v2.4.0 section 4.]
+
+          frame.value = parseUtf8(frame.data, 1, frame.data.length).replace(/\0*$/, ''); // text information frames supports multiple strings, stored as a terminator separated list [ID3v2.4.0 section 4.2.]
+
+          frame.values = frame.value.split('\0');
+        },
+        'TXXX': function (frame) {
+          var descriptionEndIndex;
+          if (frame.data[0] !== textEncodingDescriptionByte.Utf8) {
+            // ignore frames with unrecognized character encodings
+            return;
+          }
+          descriptionEndIndex = typedArrayIndexOf(frame.data, 0, 1);
+          if (descriptionEndIndex === -1) {
+            return;
+          } // parse the text fields
+
+          frame.description = parseUtf8(frame.data, 1, descriptionEndIndex); // do not include the null terminator in the tag value
+          // frames that allow different types of encoding contain terminated text
+          // [ID3v2.4.0 section 4.]
+
+          frame.value = parseUtf8(frame.data, descriptionEndIndex + 1, frame.data.length).replace(/\0*$/, '');
+          frame.data = frame.value;
+        },
+        'W*': function (frame) {
+          // parse URL field; URL fields are always represented as ISO-8859-1 [ID3v2.4.0 section 4.]
+          // if the value is followed by a string termination all the following information should be ignored [ID3v2.4.0 section 4.3]
+          frame.url = parseIso88591$1(frame.data, 0, frame.data.length).replace(/\0.*$/, '');
+        },
+        'WXXX': function (frame) {
+          var descriptionEndIndex;
+          if (frame.data[0] !== textEncodingDescriptionByte.Utf8) {
+            // ignore frames with unrecognized character encodings
+            return;
+          }
+          descriptionEndIndex = typedArrayIndexOf(frame.data, 0, 1);
+          if (descriptionEndIndex === -1) {
+            return;
+          } // parse the description and URL fields
+
+          frame.description = parseUtf8(frame.data, 1, descriptionEndIndex); // URL fields are always represented as ISO-8859-1 [ID3v2.4.0 section 4.]
+          // if the value is followed by a string termination all the following information
+          // should be ignored [ID3v2.4.0 section 4.3]
+
+          frame.url = parseIso88591$1(frame.data, descriptionEndIndex + 1, frame.data.length).replace(/\0.*$/, '');
+        },
+        'PRIV': function (frame) {
+          var i;
+          for (i = 0; i < frame.data.length; i++) {
+            if (frame.data[i] === 0) {
+              // parse the description and URL fields
+              frame.owner = parseIso88591$1(frame.data, 0, i);
+              break;
+            }
+          }
+          frame.privateData = frame.data.subarray(i + 1);
+          frame.data = frame.privateData;
+        }
+      };
+    var parseId3Frames$1 = function (data) {
+      var frameSize,
+        frameHeader,
+        frameStart = 10,
+        tagSize = 0,
+        frames = []; // If we don't have enough data for a header, 10 bytes, 
+      // or 'ID3' in the first 3 bytes this is not a valid ID3 tag.
+
+      if (data.length < 10 || data[0] !== 'I'.charCodeAt(0) || data[1] !== 'D'.charCodeAt(0) || data[2] !== '3'.charCodeAt(0)) {
+        return;
+      } // the frame size is transmitted as a 28-bit integer in the
+      // last four bytes of the ID3 header.
+      // The most significant bit of each byte is dropped and the
+      // results concatenated to recover the actual value.
+
+      tagSize = parseSyncSafeInteger$1(data.subarray(6, 10)); // ID3 reports the tag size excluding the header but it's more
+      // convenient for our comparisons to include it
+
+      tagSize += 10; // check bit 6 of byte 5 for the extended header flag.
+
+      var hasExtendedHeader = data[5] & 0x40;
+      if (hasExtendedHeader) {
+        // advance the frame start past the extended header
+        frameStart += 4; // header size field
+
+        frameStart += parseSyncSafeInteger$1(data.subarray(10, 14));
+        tagSize -= parseSyncSafeInteger$1(data.subarray(16, 20)); // clip any padding off the end
+      } // parse one or more ID3 frames
+      // http://id3.org/id3v2.3.0#ID3v2_frame_overview
+
+      do {
+        // determine the number of bytes in this frame
+        frameSize = parseSyncSafeInteger$1(data.subarray(frameStart + 4, frameStart + 8));
+        if (frameSize < 1) {
+          break;
+        }
+        frameHeader = String.fromCharCode(data[frameStart], data[frameStart + 1], data[frameStart + 2], data[frameStart + 3]);
+        var frame = {
+          id: frameHeader,
+          data: data.subarray(frameStart + 10, frameStart + frameSize + 10)
+        };
+        frame.key = frame.id; // parse frame values
+
+        if (frameParsers[frame.id]) {
+          // use frame specific parser
+          frameParsers[frame.id](frame);
+        } else if (frame.id[0] === 'T') {
+          // use text frame generic parser
+          frameParsers['T*'](frame);
+        } else if (frame.id[0] === 'W') {
+          // use URL link frame generic parser
+          frameParsers['W*'](frame);
+        }
+        frames.push(frame);
+        frameStart += 10; // advance past the frame header
+
+        frameStart += frameSize; // advance past the frame body
+      } while (frameStart < tagSize);
+      return frames;
+    };
+    var parseId3 = {
+      parseId3Frames: parseId3Frames$1,
+      parseSyncSafeInteger: parseSyncSafeInteger$1,
+      frameParsers: frameParsers
+    };
+    /**
+     * mux.js
+     *
+     * Copyright (c) Brightcove
+     * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE
+     *
+     * Accepts program elementary stream (PES) data events and parses out
+     * ID3 metadata from them, if present.
+     * @see http://id3.org/id3v2.3.0
+     */
+
+    var Stream$5 = stream,
+      StreamTypes$3 = streamTypes,
+      id3 = parseId3,
+      MetadataStream;
+    MetadataStream = function (options) {
+      var settings = {
+          // the bytes of the program-level descriptor field in MP2T
+          // see ISO/IEC 13818-1:2013 (E), section 2.6 "Program and
+          // program element descriptors"
+          descriptor: options && options.descriptor
+        },
+        // the total size in bytes of the ID3 tag being parsed
+        tagSize = 0,
+        // tag data that is not complete enough to be parsed
+        buffer = [],
+        // the total number of bytes currently in the buffer
+        bufferSize = 0,
+        i;
+      MetadataStream.prototype.init.call(this); // calculate the text track in-band metadata track dispatch type
+      // https://html.spec.whatwg.org/multipage/embedded-content.html#steps-to-expose-a-media-resource-specific-text-track
+
+      this.dispatchType = StreamTypes$3.METADATA_STREAM_TYPE.toString(16);
+      if (settings.descriptor) {
+        for (i = 0; i < settings.descriptor.length; i++) {
+          this.dispatchType += ('00' + settings.descriptor[i].toString(16)).slice(-2);
+        }
+      }
+      this.push = function (chunk) {
+        var tag, frameStart, frameSize, frame, i, frameHeader;
+        if (chunk.type !== 'timed-metadata') {
+          return;
+        } // if data_alignment_indicator is set in the PES header,
+        // we must have the start of a new ID3 tag. Assume anything
+        // remaining in the buffer was malformed and throw it out
+
+        if (chunk.dataAlignmentIndicator) {
+          bufferSize = 0;
+          buffer.length = 0;
+        } // ignore events that don't look like ID3 data
+
+        if (buffer.length === 0 && (chunk.data.length < 10 || chunk.data[0] !== 'I'.charCodeAt(0) || chunk.data[1] !== 'D'.charCodeAt(0) || chunk.data[2] !== '3'.charCodeAt(0))) {
+          this.trigger('log', {
+            level: 'warn',
+            message: 'Skipping unrecognized metadata packet'
+          });
+          return;
+        } // add this chunk to the data we've collected so far
+
+        buffer.push(chunk);
+        bufferSize += chunk.data.byteLength; // grab the size of the entire frame from the ID3 header
+
+        if (buffer.length === 1) {
+          // the frame size is transmitted as a 28-bit integer in the
+          // last four bytes of the ID3 header.
+          // The most significant bit of each byte is dropped and the
+          // results concatenated to recover the actual value.
+          tagSize = id3.parseSyncSafeInteger(chunk.data.subarray(6, 10)); // ID3 reports the tag size excluding the header but it's more
+          // convenient for our comparisons to include it
+
+          tagSize += 10;
+        } // if the entire frame has not arrived, wait for more data
+
+        if (bufferSize < tagSize) {
+          return;
+        } // collect the entire frame so it can be parsed
+
+        tag = {
+          data: new Uint8Array(tagSize),
+          frames: [],
+          pts: buffer[0].pts,
+          dts: buffer[0].dts
+        };
+        for (i = 0; i < tagSize;) {
+          tag.data.set(buffer[0].data.subarray(0, tagSize - i), i);
+          i += buffer[0].data.byteLength;
+          bufferSize -= buffer[0].data.byteLength;
+          buffer.shift();
+        } // find the start of the first frame and the end of the tag
+
+        frameStart = 10;
+        if (tag.data[5] & 0x40) {
+          // advance the frame start past the extended header
+          frameStart += 4; // header size field
+
+          frameStart += id3.parseSyncSafeInteger(tag.data.subarray(10, 14)); // clip any padding off the end
+
+          tagSize -= id3.parseSyncSafeInteger(tag.data.subarray(16, 20));
+        } // parse one or more ID3 frames
+        // http://id3.org/id3v2.3.0#ID3v2_frame_overview
+
+        do {
+          // determine the number of bytes in this frame
+          frameSize = id3.parseSyncSafeInteger(tag.data.subarray(frameStart + 4, frameStart + 8));
+          if (frameSize < 1) {
+            this.trigger('log', {
+              level: 'warn',
+              message: 'Malformed ID3 frame encountered. Skipping remaining metadata parsing.'
+            }); // If the frame is malformed, don't parse any further frames but allow previous valid parsed frames
+            // to be sent along.
+
+            break;
+          }
+          frameHeader = String.fromCharCode(tag.data[frameStart], tag.data[frameStart + 1], tag.data[frameStart + 2], tag.data[frameStart + 3]);
+          frame = {
+            id: frameHeader,
+            data: tag.data.subarray(frameStart + 10, frameStart + frameSize + 10)
+          };
+          frame.key = frame.id; // parse frame values
+
+          if (id3.frameParsers[frame.id]) {
+            // use frame specific parser
+            id3.frameParsers[frame.id](frame);
+          } else if (frame.id[0] === 'T') {
+            // use text frame generic parser
+            id3.frameParsers['T*'](frame);
+          } else if (frame.id[0] === 'W') {
+            // use URL link frame generic parser
+            id3.frameParsers['W*'](frame);
+          } // handle the special PRIV frame used to indicate the start
+          // time for raw AAC data
+
+          if (frame.owner === 'com.apple.streaming.transportStreamTimestamp') {
+            var d = frame.data,
+              size = (d[3] & 0x01) << 30 | d[4] << 22 | d[5] << 14 | d[6] << 6 | d[7] >>> 2;
+            size *= 4;
+            size += d[7] & 0x03;
+            frame.timeStamp = size; // in raw AAC, all subsequent data will be timestamped based
+            // on the value of this frame
+            // we couldn't have known the appropriate pts and dts before
+            // parsing this ID3 tag so set those values now
+
+            if (tag.pts === undefined && tag.dts === undefined) {
+              tag.pts = frame.timeStamp;
+              tag.dts = frame.timeStamp;
+            }
+            this.trigger('timestamp', frame);
+          }
+          tag.frames.push(frame);
+          frameStart += 10; // advance past the frame header
+
+          frameStart += frameSize; // advance past the frame body
+        } while (frameStart < tagSize);
+        this.trigger('data', tag);
+      };
+    };
+    MetadataStream.prototype = new Stream$5();
+    var metadataStream = MetadataStream;
+    /**
+     * mux.js
+     *
+     * Copyright (c) Brightcove
+     * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE
+     *
+     * A stream-based mp2t to mp4 converter. This utility can be used to
+     * deliver mp4s to a SourceBuffer on platforms that support native
+     * Media Source Extensions.
+     */
+
+    var Stream$4 = stream,
+      CaptionStream$1 = captionStream,
+      StreamTypes$2 = streamTypes,
+      TimestampRolloverStream = timestampRolloverStream.TimestampRolloverStream; // object types
+
+    var TransportPacketStream, TransportParseStream, ElementaryStream; // constants
+
+    var MP2T_PACKET_LENGTH$1 = 188,
+      // bytes
+      SYNC_BYTE$1 = 0x47;
+    /**
+     * Splits an incoming stream of binary data into MPEG-2 Transport
+     * Stream packets.
+     */
+
+    TransportPacketStream = function () {
+      var buffer = new Uint8Array(MP2T_PACKET_LENGTH$1),
+        bytesInBuffer = 0;
+      TransportPacketStream.prototype.init.call(this); // Deliver new bytes to the stream.
+
+      /**
+       * Split a stream of data into M2TS packets
+      **/
+
+      this.push = function (bytes) {
+        var startIndex = 0,
+          endIndex = MP2T_PACKET_LENGTH$1,
+          everything; // If there are bytes remaining from the last segment, prepend them to the
+        // bytes that were pushed in
+
+        if (bytesInBuffer) {
+          everything = new Uint8Array(bytes.byteLength + bytesInBuffer);
+          everything.set(buffer.subarray(0, bytesInBuffer));
+          everything.set(bytes, bytesInBuffer);
+          bytesInBuffer = 0;
+        } else {
+          everything = bytes;
+        } // While we have enough data for a packet
+
+        while (endIndex < everything.byteLength) {
+          // Look for a pair of start and end sync bytes in the data..
+          if (everything[startIndex] === SYNC_BYTE$1 && everything[endIndex] === SYNC_BYTE$1) {
+            // We found a packet so emit it and jump one whole packet forward in
+            // the stream
+            this.trigger('data', everything.subarray(startIndex, endIndex));
+            startIndex += MP2T_PACKET_LENGTH$1;
+            endIndex += MP2T_PACKET_LENGTH$1;
+            continue;
+          } // If we get here, we have somehow become de-synchronized and we need to step
+          // forward one byte at a time until we find a pair of sync bytes that denote
+          // a packet
+
+          startIndex++;
+          endIndex++;
+        } // If there was some data left over at the end of the segment that couldn't
+        // possibly be a whole packet, keep it because it might be the start of a packet
+        // that continues in the next segment
+
+        if (startIndex < everything.byteLength) {
+          buffer.set(everything.subarray(startIndex), 0);
+          bytesInBuffer = everything.byteLength - startIndex;
+        }
+      };
+      /**
+       * Passes identified M2TS packets to the TransportParseStream to be parsed
+      **/
+
+      this.flush = function () {
+        // If the buffer contains a whole packet when we are being flushed, emit it
+        // and empty the buffer. Otherwise hold onto the data because it may be
+        // important for decoding the next segment
+        if (bytesInBuffer === MP2T_PACKET_LENGTH$1 && buffer[0] === SYNC_BYTE$1) {
+          this.trigger('data', buffer);
+          bytesInBuffer = 0;
+        }
+        this.trigger('done');
+      };
+      this.endTimeline = function () {
+        this.flush();
+        this.trigger('endedtimeline');
+      };
+      this.reset = function () {
+        bytesInBuffer = 0;
+        this.trigger('reset');
+      };
+    };
+    TransportPacketStream.prototype = new Stream$4();
+    /**
+     * Accepts an MP2T TransportPacketStream and emits data events with parsed
+     * forms of the individual transport stream packets.
+     */
+
+    TransportParseStream = function () {
+      var parsePsi, parsePat, parsePmt, self;
+      TransportParseStream.prototype.init.call(this);
+      self = this;
+      this.packetsWaitingForPmt = [];
+      this.programMapTable = undefined;
+      parsePsi = function (payload, psi) {
+        var offset = 0; // PSI packets may be split into multiple sections and those
+        // sections may be split into multiple packets. If a PSI
+        // section starts in this packet, the payload_unit_start_indicator
+        // will be true and the first byte of the payload will indicate
+        // the offset from the current position to the start of the
+        // section.
+
+        if (psi.payloadUnitStartIndicator) {
+          offset += payload[offset] + 1;
+        }
+        if (psi.type === 'pat') {
+          parsePat(payload.subarray(offset), psi);
+        } else {
+          parsePmt(payload.subarray(offset), psi);
+        }
+      };
+      parsePat = function (payload, pat) {
+        pat.section_number = payload[7]; // eslint-disable-line camelcase
+
+        pat.last_section_number = payload[8]; // eslint-disable-line camelcase
+        // skip the PSI header and parse the first PMT entry
+
+        self.pmtPid = (payload[10] & 0x1F) << 8 | payload[11];
+        pat.pmtPid = self.pmtPid;
+      };
+      /**
+       * Parse out the relevant fields of a Program Map Table (PMT).
+       * @param payload {Uint8Array} the PMT-specific portion of an MP2T
+       * packet. The first byte in this array should be the table_id
+       * field.
+       * @param pmt {object} the object that should be decorated with
+       * fields parsed from the PMT.
+       */
+
+      parsePmt = function (payload, pmt) {
+        var sectionLength, tableEnd, programInfoLength, offset; // PMTs can be sent ahead of the time when they should actually
+        // take effect. We don't believe this should ever be the case
+        // for HLS but we'll ignore "forward" PMT declarations if we see
+        // them. Future PMT declarations have the current_next_indicator
+        // set to zero.
+
+        if (!(payload[5] & 0x01)) {
+          return;
+        } // overwrite any existing program map table
+
+        self.programMapTable = {
+          video: null,
+          audio: null,
+          'timed-metadata': {}
+        }; // the mapping table ends at the end of the current section
+
+        sectionLength = (payload[1] & 0x0f) << 8 | payload[2];
+        tableEnd = 3 + sectionLength - 4; // to determine where the table is, we have to figure out how
+        // long the program info descriptors are
+
+        programInfoLength = (payload[10] & 0x0f) << 8 | payload[11]; // advance the offset to the first entry in the mapping table
+
+        offset = 12 + programInfoLength;
+        while (offset < tableEnd) {
+          var streamType = payload[offset];
+          var pid = (payload[offset + 1] & 0x1F) << 8 | payload[offset + 2]; // only map a single elementary_pid for audio and video stream types
+          // TODO: should this be done for metadata too? for now maintain behavior of
+          //       multiple metadata streams
+
+          if (streamType === StreamTypes$2.H264_STREAM_TYPE && self.programMapTable.video === null) {
+            self.programMapTable.video = pid;
+          } else if (streamType === StreamTypes$2.ADTS_STREAM_TYPE && self.programMapTable.audio === null) {
+            self.programMapTable.audio = pid;
+          } else if (streamType === StreamTypes$2.METADATA_STREAM_TYPE) {
+            // map pid to stream type for metadata streams
+            self.programMapTable['timed-metadata'][pid] = streamType;
+          } // move to the next table entry
+          // skip past the elementary stream descriptors, if present
+
+          offset += ((payload[offset + 3] & 0x0F) << 8 | payload[offset + 4]) + 5;
+        } // record the map on the packet as well
+
+        pmt.programMapTable = self.programMapTable;
+      };
+      /**
+       * Deliver a new MP2T packet to the next stream in the pipeline.
+       */
+
+      this.push = function (packet) {
+        var result = {},
+          offset = 4;
+        result.payloadUnitStartIndicator = !!(packet[1] & 0x40); // pid is a 13-bit field starting at the last bit of packet[1]
+
+        result.pid = packet[1] & 0x1f;
+        result.pid <<= 8;
+        result.pid |= packet[2]; // if an adaption field is present, its length is specified by the
+        // fifth byte of the TS packet header. The adaptation field is
+        // used to add stuffing to PES packets that don't fill a complete
+        // TS packet, and to specify some forms of timing and control data
+        // that we do not currently use.
+
+        if ((packet[3] & 0x30) >>> 4 > 0x01) {
+          offset += packet[offset] + 1;
+        } // parse the rest of the packet based on the type
+
+        if (result.pid === 0) {
+          result.type = 'pat';
+          parsePsi(packet.subarray(offset), result);
+          this.trigger('data', result);
+        } else if (result.pid === this.pmtPid) {
+          result.type = 'pmt';
+          parsePsi(packet.subarray(offset), result);
+          this.trigger('data', result); // if there are any packets waiting for a PMT to be found, process them now
+
+          while (this.packetsWaitingForPmt.length) {
+            this.processPes_.apply(this, this.packetsWaitingForPmt.shift());
+          }
+        } else if (this.programMapTable === undefined) {
+          // When we have not seen a PMT yet, defer further processing of
+          // PES packets until one has been parsed
+          this.packetsWaitingForPmt.push([packet, offset, result]);
+        } else {
+          this.processPes_(packet, offset, result);
+        }
+      };
+      this.processPes_ = function (packet, offset, result) {
+        // set the appropriate stream type
+        if (result.pid === this.programMapTable.video) {
+          result.streamType = StreamTypes$2.H264_STREAM_TYPE;
+        } else if (result.pid === this.programMapTable.audio) {
+          result.streamType = StreamTypes$2.ADTS_STREAM_TYPE;
+        } else {
+          // if not video or audio, it is timed-metadata or unknown
+          // if unknown, streamType will be undefined
+          result.streamType = this.programMapTable['timed-metadata'][result.pid];
+        }
+        result.type = 'pes';
+        result.data = packet.subarray(offset);
+        this.trigger('data', result);
+      };
+    };
+    TransportParseStream.prototype = new Stream$4();
+    TransportParseStream.STREAM_TYPES = {
+      h264: 0x1b,
+      adts: 0x0f
+    };
+    /**
+     * Reconsistutes program elementary stream (PES) packets from parsed
+     * transport stream packets. That is, if you pipe an
+     * mp2t.TransportParseStream into a mp2t.ElementaryStream, the output
+     * events will be events which capture the bytes for individual PES
+     * packets plus relevant metadata that has been extracted from the
+     * container.
+     */
+
+    ElementaryStream = function () {
+      var self = this,
+        segmentHadPmt = false,
+        // PES packet fragments
+        video = {
+          data: [],
+          size: 0
+        },
+        audio = {
+          data: [],
+          size: 0
+        },
+        timedMetadata = {
+          data: [],
+          size: 0
+        },
+        programMapTable,
+        parsePes = function (payload, pes) {
+          var ptsDtsFlags;
+          const startPrefix = payload[0] << 16 | payload[1] << 8 | payload[2]; // default to an empty array
+
+          pes.data = new Uint8Array(); // In certain live streams, the start of a TS fragment has ts packets
+          // that are frame data that is continuing from the previous fragment. This
+          // is to check that the pes data is the start of a new pes payload
+
+          if (startPrefix !== 1) {
+            return;
+          } // get the packet length, this will be 0 for video
+
+          pes.packetLength = 6 + (payload[4] << 8 | payload[5]); // find out if this packets starts a new keyframe
+
+          pes.dataAlignmentIndicator = (payload[6] & 0x04) !== 0; // PES packets may be annotated with a PTS value, or a PTS value
+          // and a DTS value. Determine what combination of values is
+          // available to work with.
+
+          ptsDtsFlags = payload[7]; // PTS and DTS are normally stored as a 33-bit number.  Javascript
+          // performs all bitwise operations on 32-bit integers but javascript
+          // supports a much greater range (52-bits) of integer using standard
+          // mathematical operations.
+          // We construct a 31-bit value using bitwise operators over the 31
+          // most significant bits and then multiply by 4 (equal to a left-shift
+          // of 2) before we add the final 2 least significant bits of the
+          // timestamp (equal to an OR.)
+
+          if (ptsDtsFlags & 0xC0) {
+            // the PTS and DTS are not written out directly. For information
+            // on how they are encoded, see
+            // http://dvd.sourceforge.net/dvdinfo/pes-hdr.html
+            pes.pts = (payload[9] & 0x0E) << 27 | (payload[10] & 0xFF) << 20 | (payload[11] & 0xFE) << 12 | (payload[12] & 0xFF) << 5 | (payload[13] & 0xFE) >>> 3;
+            pes.pts *= 4; // Left shift by 2
+
+            pes.pts += (payload[13] & 0x06) >>> 1; // OR by the two LSBs
+
+            pes.dts = pes.pts;
+            if (ptsDtsFlags & 0x40) {
+              pes.dts = (payload[14] & 0x0E) << 27 | (payload[15] & 0xFF) << 20 | (payload[16] & 0xFE) << 12 | (payload[17] & 0xFF) << 5 | (payload[18] & 0xFE) >>> 3;
+              pes.dts *= 4; // Left shift by 2
+
+              pes.dts += (payload[18] & 0x06) >>> 1; // OR by the two LSBs
+            }
+          } // the data section starts immediately after the PES header.
+          // pes_header_data_length specifies the number of header bytes
+          // that follow the last byte of the field.
+
+          pes.data = payload.subarray(9 + payload[8]);
+        },
+        /**
+          * Pass completely parsed PES packets to the next stream in the pipeline
+         **/
+        flushStream = function (stream, type, forceFlush) {
+          var packetData = new Uint8Array(stream.size),
+            event = {
+              type: type
+            },
+            i = 0,
+            offset = 0,
+            packetFlushable = false,
+            fragment; // do nothing if there is not enough buffered data for a complete
+          // PES header
+
+          if (!stream.data.length || stream.size < 9) {
+            return;
+          }
+          event.trackId = stream.data[0].pid; // reassemble the packet
+
+          for (i = 0; i < stream.data.length; i++) {
+            fragment = stream.data[i];
+            packetData.set(fragment.data, offset);
+            offset += fragment.data.byteLength;
+          } // parse assembled packet's PES header
+
+          parsePes(packetData, event); // non-video PES packets MUST have a non-zero PES_packet_length
+          // check that there is enough stream data to fill the packet
+
+          packetFlushable = type === 'video' || event.packetLength <= stream.size; // flush pending packets if the conditions are right
+
+          if (forceFlush || packetFlushable) {
+            stream.size = 0;
+            stream.data.length = 0;
+          } // only emit packets that are complete. this is to avoid assembling
+          // incomplete PES packets due to poor segmentation
+
+          if (packetFlushable) {
+            self.trigger('data', event);
+          }
+        };
+      ElementaryStream.prototype.init.call(this);
+      /**
+       * Identifies M2TS packet types and parses PES packets using metadata
+       * parsed from the PMT
+       **/
+
+      this.push = function (data) {
+        ({
+          pat: function () {// we have to wait for the PMT to arrive as well before we
+            // have any meaningful metadata
+          },
+          pes: function () {
+            var stream, streamType;
+            switch (data.streamType) {
+              case StreamTypes$2.H264_STREAM_TYPE:
+                stream = video;
+                streamType = 'video';
+                break;
+              case StreamTypes$2.ADTS_STREAM_TYPE:
+                stream = audio;
+                streamType = 'audio';
+                break;
+              case StreamTypes$2.METADATA_STREAM_TYPE:
+                stream = timedMetadata;
+                streamType = 'timed-metadata';
+                break;
+              default:
+                // ignore unknown stream types
+                return;
+            } // if a new packet is starting, we can flush the completed
+            // packet
+
+            if (data.payloadUnitStartIndicator) {
+              flushStream(stream, streamType, true);
+            } // buffer this fragment until we are sure we've received the
+            // complete payload
+
+            stream.data.push(data);
+            stream.size += data.data.byteLength;
+          },
+          pmt: function () {
+            var event = {
+              type: 'metadata',
+              tracks: []
+            };
+            programMapTable = data.programMapTable; // translate audio and video streams to tracks
+
+            if (programMapTable.video !== null) {
+              event.tracks.push({
+                timelineStartInfo: {
+                  baseMediaDecodeTime: 0
+                },
+                id: +programMapTable.video,
+                codec: 'avc',
+                type: 'video'
+              });
+            }
+            if (programMapTable.audio !== null) {
+              event.tracks.push({
+                timelineStartInfo: {
+                  baseMediaDecodeTime: 0
+                },
+                id: +programMapTable.audio,
+                codec: 'adts',
+                type: 'audio'
+              });
+            }
+            segmentHadPmt = true;
+            self.trigger('data', event);
+          }
+        })[data.type]();
+      };
+      this.reset = function () {
+        video.size = 0;
+        video.data.length = 0;
+        audio.size = 0;
+        audio.data.length = 0;
+        this.trigger('reset');
+      };
+      /**
+       * Flush any remaining input. Video PES packets may be of variable
+       * length. Normally, the start of a new video packet can trigger the
+       * finalization of the previous packet. That is not possible if no
+       * more video is forthcoming, however. In that case, some other
+       * mechanism (like the end of the file) has to be employed. When it is
+       * clear that no additional data is forthcoming, calling this method
+       * will flush the buffered packets.
+       */
+
+      this.flushStreams_ = function () {
+        // !!THIS ORDER IS IMPORTANT!!
+        // video first then audio
+        flushStream(video, 'video');
+        flushStream(audio, 'audio');
+        flushStream(timedMetadata, 'timed-metadata');
+      };
+      this.flush = function () {
+        // if on flush we haven't had a pmt emitted
+        // and we have a pmt to emit. emit the pmt
+        // so that we trigger a trackinfo downstream.
+        if (!segmentHadPmt && programMapTable) {
+          var pmt = {
+            type: 'metadata',
+            tracks: []
+          }; // translate audio and video streams to tracks
+
+          if (programMapTable.video !== null) {
+            pmt.tracks.push({
+              timelineStartInfo: {
+                baseMediaDecodeTime: 0
+              },
+              id: +programMapTable.video,
+              codec: 'avc',
+              type: 'video'
+            });
+          }
+          if (programMapTable.audio !== null) {
+            pmt.tracks.push({
+              timelineStartInfo: {
+                baseMediaDecodeTime: 0
+              },
+              id: +programMapTable.audio,
+              codec: 'adts',
+              type: 'audio'
+            });
+          }
+          self.trigger('data', pmt);
+        }
+        segmentHadPmt = false;
+        this.flushStreams_();
+        this.trigger('done');
+      };
+    };
+    ElementaryStream.prototype = new Stream$4();
+    var m2ts$1 = {
+      PAT_PID: 0x0000,
+      MP2T_PACKET_LENGTH: MP2T_PACKET_LENGTH$1,
+      TransportPacketStream: TransportPacketStream,
+      TransportParseStream: TransportParseStream,
+      ElementaryStream: ElementaryStream,
+      TimestampRolloverStream: TimestampRolloverStream,
+      CaptionStream: CaptionStream$1.CaptionStream,
+      Cea608Stream: CaptionStream$1.Cea608Stream,
+      Cea708Stream: CaptionStream$1.Cea708Stream,
+      MetadataStream: metadataStream
+    };
+    for (var type in StreamTypes$2) {
+      if (StreamTypes$2.hasOwnProperty(type)) {
+        m2ts$1[type] = StreamTypes$2[type];
+      }
+    }
+    var m2ts_1 = m2ts$1;
+    /**
+     * mux.js
+     *
+     * Copyright (c) Brightcove
+     * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE
+     */
+
+    var Stream$3 = stream;
+    var ONE_SECOND_IN_TS$2 = clock$2.ONE_SECOND_IN_TS;
+    var AdtsStream$1;
+    var ADTS_SAMPLING_FREQUENCIES$1 = [96000, 88200, 64000, 48000, 44100, 32000, 24000, 22050, 16000, 12000, 11025, 8000, 7350];
+    /*
+     * Accepts a ElementaryStream and emits data events with parsed
+     * AAC Audio Frames of the individual packets. Input audio in ADTS
+     * format is unpacked and re-emitted as AAC frames.
+     *
+     * @see http://wiki.multimedia.cx/index.php?title=ADTS
+     * @see http://wiki.multimedia.cx/?title=Understanding_AAC
+     */
+
+    AdtsStream$1 = function (handlePartialSegments) {
+      var buffer,
+        frameNum = 0;
+      AdtsStream$1.prototype.init.call(this);
+      this.skipWarn_ = function (start, end) {
+        this.trigger('log', {
+          level: 'warn',
+          message: `adts skiping bytes ${start} to ${end} in frame ${frameNum} outside syncword`
+        });
+      };
+      this.push = function (packet) {
+        var i = 0,
+          frameLength,
+          protectionSkipBytes,
+          oldBuffer,
+          sampleCount,
+          adtsFrameDuration;
+        if (!handlePartialSegments) {
+          frameNum = 0;
+        }
+        if (packet.type !== 'audio') {
+          // ignore non-audio data
+          return;
+        } // Prepend any data in the buffer to the input data so that we can parse
+        // aac frames the cross a PES packet boundary
+
+        if (buffer && buffer.length) {
+          oldBuffer = buffer;
+          buffer = new Uint8Array(oldBuffer.byteLength + packet.data.byteLength);
+          buffer.set(oldBuffer);
+          buffer.set(packet.data, oldBuffer.byteLength);
+        } else {
+          buffer = packet.data;
+        } // unpack any ADTS frames which have been fully received
+        // for details on the ADTS header, see http://wiki.multimedia.cx/index.php?title=ADTS
+
+        var skip; // We use i + 7 here because we want to be able to parse the entire header.
+        // If we don't have enough bytes to do that, then we definitely won't have a full frame.
+
+        while (i + 7 < buffer.length) {
+          // Look for the start of an ADTS header..
+          if (buffer[i] !== 0xFF || (buffer[i + 1] & 0xF6) !== 0xF0) {
+            if (typeof skip !== 'number') {
+              skip = i;
+            } // If a valid header was not found,  jump one forward and attempt to
+            // find a valid ADTS header starting at the next byte
+
+            i++;
+            continue;
+          }
+          if (typeof skip === 'number') {
+            this.skipWarn_(skip, i);
+            skip = null;
+          } // The protection skip bit tells us if we have 2 bytes of CRC data at the
+          // end of the ADTS header
+
+          protectionSkipBytes = (~buffer[i + 1] & 0x01) * 2; // Frame length is a 13 bit integer starting 16 bits from the
+          // end of the sync sequence
+          // NOTE: frame length includes the size of the header
+
+          frameLength = (buffer[i + 3] & 0x03) << 11 | buffer[i + 4] << 3 | (buffer[i + 5] & 0xe0) >> 5;
+          sampleCount = ((buffer[i + 6] & 0x03) + 1) * 1024;
+          adtsFrameDuration = sampleCount * ONE_SECOND_IN_TS$2 / ADTS_SAMPLING_FREQUENCIES$1[(buffer[i + 2] & 0x3c) >>> 2]; // If we don't have enough data to actually finish this ADTS frame,
+          // then we have to wait for more data
+
+          if (buffer.byteLength - i < frameLength) {
+            break;
+          } // Otherwise, deliver the complete AAC frame
+
+          this.trigger('data', {
+            pts: packet.pts + frameNum * adtsFrameDuration,
+            dts: packet.dts + frameNum * adtsFrameDuration,
+            sampleCount: sampleCount,
+            audioobjecttype: (buffer[i + 2] >>> 6 & 0x03) + 1,
+            channelcount: (buffer[i + 2] & 1) << 2 | (buffer[i + 3] & 0xc0) >>> 6,
+            samplerate: ADTS_SAMPLING_FREQUENCIES$1[(buffer[i + 2] & 0x3c) >>> 2],
+            samplingfrequencyindex: (buffer[i + 2] & 0x3c) >>> 2,
+            // assume ISO/IEC 14496-12 AudioSampleEntry default of 16
+            samplesize: 16,
+            // data is the frame without it's header
+            data: buffer.subarray(i + 7 + protectionSkipBytes, i + frameLength)
+          });
+          frameNum++;
+          i += frameLength;
+        }
+        if (typeof skip === 'number') {
+          this.skipWarn_(skip, i);
+          skip = null;
+        } // remove processed bytes from the buffer.
+
+        buffer = buffer.subarray(i);
+      };
+      this.flush = function () {
+        frameNum = 0;
+        this.trigger('done');
+      };
+      this.reset = function () {
+        buffer = void 0;
+        this.trigger('reset');
+      };
+      this.endTimeline = function () {
+        buffer = void 0;
+        this.trigger('endedtimeline');
+      };
+    };
+    AdtsStream$1.prototype = new Stream$3();
+    var adts = AdtsStream$1;
+    /**
+     * mux.js
+     *
+     * Copyright (c) Brightcove
+     * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE
+     */
+
+    var ExpGolomb$1;
+    /**
+     * Parser for exponential Golomb codes, a variable-bitwidth number encoding
+     * scheme used by h264.
+     */
+
+    ExpGolomb$1 = function (workingData) {
+      var
+        // the number of bytes left to examine in workingData
+        workingBytesAvailable = workingData.byteLength,
+        // the current word being examined
+        workingWord = 0,
+        // :uint
+        // the number of bits left to examine in the current word
+        workingBitsAvailable = 0; // :uint;
+      // ():uint
+
+      this.length = function () {
+        return 8 * workingBytesAvailable;
+      }; // ():uint
+
+      this.bitsAvailable = function () {
+        return 8 * workingBytesAvailable + workingBitsAvailable;
+      }; // ():void
+
+      this.loadWord = function () {
+        var position = workingData.byteLength - workingBytesAvailable,
+          workingBytes = new Uint8Array(4),
+          availableBytes = Math.min(4, workingBytesAvailable);
+        if (availableBytes === 0) {
+          throw new Error('no bytes available');
+        }
+        workingBytes.set(workingData.subarray(position, position + availableBytes));
+        workingWord = new DataView(workingBytes.buffer).getUint32(0); // track the amount of workingData that has been processed
+
+        workingBitsAvailable = availableBytes * 8;
+        workingBytesAvailable -= availableBytes;
+      }; // (count:int):void
+
+      this.skipBits = function (count) {
+        var skipBytes; // :int
+
+        if (workingBitsAvailable > count) {
+          workingWord <<= count;
+          workingBitsAvailable -= count;
+        } else {
+          count -= workingBitsAvailable;
+          skipBytes = Math.floor(count / 8);
+          count -= skipBytes * 8;
+          workingBytesAvailable -= skipBytes;
+          this.loadWord();
+          workingWord <<= count;
+          workingBitsAvailable -= count;
+        }
+      }; // (size:int):uint
+
+      this.readBits = function (size) {
+        var bits = Math.min(workingBitsAvailable, size),
+          // :uint
+          valu = workingWord >>> 32 - bits; // :uint
+        // if size > 31, handle error
+
+        workingBitsAvailable -= bits;
+        if (workingBitsAvailable > 0) {
+          workingWord <<= bits;
+        } else if (workingBytesAvailable > 0) {
+          this.loadWord();
+        }
+        bits = size - bits;
+        if (bits > 0) {
+          return valu << bits | this.readBits(bits);
+        }
+        return valu;
+      }; // ():uint
+
+      this.skipLeadingZeros = function () {
+        var leadingZeroCount; // :uint
+
+        for (leadingZeroCount = 0; leadingZeroCount < workingBitsAvailable; ++leadingZeroCount) {
+          if ((workingWord & 0x80000000 >>> leadingZeroCount) !== 0) {
+            // the first bit of working word is 1
+            workingWord <<= leadingZeroCount;
+            workingBitsAvailable -= leadingZeroCount;
+            return leadingZeroCount;
+          }
+        } // we exhausted workingWord and still have not found a 1
+
+        this.loadWord();
+        return leadingZeroCount + this.skipLeadingZeros();
+      }; // ():void
+
+      this.skipUnsignedExpGolomb = function () {
+        this.skipBits(1 + this.skipLeadingZeros());
+      }; // ():void
+
+      this.skipExpGolomb = function () {
+        this.skipBits(1 + this.skipLeadingZeros());
+      }; // ():uint
+
+      this.readUnsignedExpGolomb = function () {
+        var clz = this.skipLeadingZeros(); // :uint
+
+        return this.readBits(clz + 1) - 1;
+      }; // ():int
+
+      this.readExpGolomb = function () {
+        var valu = this.readUnsignedExpGolomb(); // :int
+
+        if (0x01 & valu) {
+          // the number is odd if the low order bit is set
+          return 1 + valu >>> 1; // add 1 to make it even, and divide by 2
+        }
+
+        return -1 * (valu >>> 1); // divide by two then make it negative
+      }; // Some convenience functions
+      // :Boolean
+
+      this.readBoolean = function () {
+        return this.readBits(1) === 1;
+      }; // ():int
+
+      this.readUnsignedByte = function () {
+        return this.readBits(8);
+      };
+      this.loadWord();
+    };
+    var expGolomb = ExpGolomb$1;
+    /**
+     * mux.js
+     *
+     * Copyright (c) Brightcove
+     * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE
+     */
+
+    var Stream$2 = stream;
+    var ExpGolomb = expGolomb;
+    var H264Stream$1, NalByteStream;
+    var PROFILES_WITH_OPTIONAL_SPS_DATA;
+    /**
+     * Accepts a NAL unit byte stream and unpacks the embedded NAL units.
+     */
+
+    NalByteStream = function () {
+      var syncPoint = 0,
+        i,
+        buffer;
+      NalByteStream.prototype.init.call(this);
+      /*
+       * Scans a byte stream and triggers a data event with the NAL units found.
+       * @param {Object} data Event received from H264Stream
+       * @param {Uint8Array} data.data The h264 byte stream to be scanned
+       *
+       * @see H264Stream.push
+       */
+
+      this.push = function (data) {
+        var swapBuffer;
+        if (!buffer) {
+          buffer = data.data;
+        } else {
+          swapBuffer = new Uint8Array(buffer.byteLength + data.data.byteLength);
+          swapBuffer.set(buffer);
+          swapBuffer.set(data.data, buffer.byteLength);
+          buffer = swapBuffer;
+        }
+        var len = buffer.byteLength; // Rec. ITU-T H.264, Annex B
+        // scan for NAL unit boundaries
+        // a match looks like this:
+        // 0 0 1 .. NAL .. 0 0 1
+        // ^ sync point        ^ i
+        // or this:
+        // 0 0 1 .. NAL .. 0 0 0
+        // ^ sync point        ^ i
+        // advance the sync point to a NAL start, if necessary
+
+        for (; syncPoint < len - 3; syncPoint++) {
+          if (buffer[syncPoint + 2] === 1) {
+            // the sync point is properly aligned
+            i = syncPoint + 5;
+            break;
+          }
+        }
+        while (i < len) {
+          // look at the current byte to determine if we've hit the end of
+          // a NAL unit boundary
+          switch (buffer[i]) {
+            case 0:
+              // skip past non-sync sequences
+              if (buffer[i - 1] !== 0) {
+                i += 2;
+                break;
+              } else if (buffer[i - 2] !== 0) {
+                i++;
+                break;
+              } // deliver the NAL unit if it isn't empty
+
+              if (syncPoint + 3 !== i - 2) {
+                this.trigger('data', buffer.subarray(syncPoint + 3, i - 2));
+              } // drop trailing zeroes
+
+              do {
+                i++;
+              } while (buffer[i] !== 1 && i < len);
+              syncPoint = i - 2;
+              i += 3;
+              break;
+            case 1:
+              // skip past non-sync sequences
+              if (buffer[i - 1] !== 0 || buffer[i - 2] !== 0) {
+                i += 3;
+                break;
+              } // deliver the NAL unit
+
+              this.trigger('data', buffer.subarray(syncPoint + 3, i - 2));
+              syncPoint = i - 2;
+              i += 3;
+              break;
+            default:
+              // the current byte isn't a one or zero, so it cannot be part
+              // of a sync sequence
+              i += 3;
+              break;
+          }
+        } // filter out the NAL units that were delivered
+
+        buffer = buffer.subarray(syncPoint);
+        i -= syncPoint;
+        syncPoint = 0;
+      };
+      this.reset = function () {
+        buffer = null;
+        syncPoint = 0;
+        this.trigger('reset');
+      };
+      this.flush = function () {
+        // deliver the last buffered NAL unit
+        if (buffer && buffer.byteLength > 3) {
+          this.trigger('data', buffer.subarray(syncPoint + 3));
+        } // reset the stream state
+
+        buffer = null;
+        syncPoint = 0;
+        this.trigger('done');
+      };
+      this.endTimeline = function () {
+        this.flush();
+        this.trigger('endedtimeline');
+      };
+    };
+    NalByteStream.prototype = new Stream$2(); // values of profile_idc that indicate additional fields are included in the SPS
+    // see Recommendation ITU-T H.264 (4/2013),
+    // 7.3.2.1.1 Sequence parameter set data syntax
+
+    PROFILES_WITH_OPTIONAL_SPS_DATA = {
+      100: true,
+      110: true,
+      122: true,
+      244: true,
+      44: true,
+      83: true,
+      86: true,
+      118: true,
+      128: true,
+      // TODO: the three profiles below don't
+      // appear to have sps data in the specificiation anymore?
+      138: true,
+      139: true,
+      134: true
+    };
+    /**
+     * Accepts input from a ElementaryStream and produces H.264 NAL unit data
+     * events.
+     */
+
+    H264Stream$1 = function () {
+      var nalByteStream = new NalByteStream(),
+        self,
+        trackId,
+        currentPts,
+        currentDts,
+        discardEmulationPreventionBytes,
+        readSequenceParameterSet,
+        skipScalingList;
+      H264Stream$1.prototype.init.call(this);
+      self = this;
+      /*
+       * Pushes a packet from a stream onto the NalByteStream
+       *
+       * @param {Object} packet - A packet received from a stream
+       * @param {Uint8Array} packet.data - The raw bytes of the packet
+       * @param {Number} packet.dts - Decode timestamp of the packet
+       * @param {Number} packet.pts - Presentation timestamp of the packet
+       * @param {Number} packet.trackId - The id of the h264 track this packet came from
+       * @param {('video'|'audio')} packet.type - The type of packet
+       *
+       */
+
+      this.push = function (packet) {
+        if (packet.type !== 'video') {
+          return;
+        }
+        trackId = packet.trackId;
+        currentPts = packet.pts;
+        currentDts = packet.dts;
+        nalByteStream.push(packet);
+      };
+      /*
+       * Identify NAL unit types and pass on the NALU, trackId, presentation and decode timestamps
+       * for the NALUs to the next stream component.
+       * Also, preprocess caption and sequence parameter NALUs.
+       *
+       * @param {Uint8Array} data - A NAL unit identified by `NalByteStream.push`
+       * @see NalByteStream.push
+       */
+
+      nalByteStream.on('data', function (data) {
+        var event = {
+          trackId: trackId,
+          pts: currentPts,
+          dts: currentDts,
+          data: data,
+          nalUnitTypeCode: data[0] & 0x1f
+        };
+        switch (event.nalUnitTypeCode) {
+          case 0x05:
+            event.nalUnitType = 'slice_layer_without_partitioning_rbsp_idr';
+            break;
+          case 0x06:
+            event.nalUnitType = 'sei_rbsp';
+            event.escapedRBSP = discardEmulationPreventionBytes(data.subarray(1));
+            break;
+          case 0x07:
+            event.nalUnitType = 'seq_parameter_set_rbsp';
+            event.escapedRBSP = discardEmulationPreventionBytes(data.subarray(1));
+            event.config = readSequenceParameterSet(event.escapedRBSP);
+            break;
+          case 0x08:
+            event.nalUnitType = 'pic_parameter_set_rbsp';
+            break;
+          case 0x09:
+            event.nalUnitType = 'access_unit_delimiter_rbsp';
+            break;
+        } // This triggers data on the H264Stream
+
+        self.trigger('data', event);
+      });
+      nalByteStream.on('done', function () {
+        self.trigger('done');
+      });
+      nalByteStream.on('partialdone', function () {
+        self.trigger('partialdone');
+      });
+      nalByteStream.on('reset', function () {
+        self.trigger('reset');
+      });
+      nalByteStream.on('endedtimeline', function () {
+        self.trigger('endedtimeline');
+      });
+      this.flush = function () {
+        nalByteStream.flush();
+      };
+      this.partialFlush = function () {
+        nalByteStream.partialFlush();
+      };
+      this.reset = function () {
+        nalByteStream.reset();
+      };
+      this.endTimeline = function () {
+        nalByteStream.endTimeline();
+      };
+      /**
+       * Advance the ExpGolomb decoder past a scaling list. The scaling
+       * list is optionally transmitted as part of a sequence parameter
+       * set and is not relevant to transmuxing.
+       * @param count {number} the number of entries in this scaling list
+       * @param expGolombDecoder {object} an ExpGolomb pointed to the
+       * start of a scaling list
+       * @see Recommendation ITU-T H.264, Section 7.3.2.1.1.1
+       */
+
+      skipScalingList = function (count, expGolombDecoder) {
+        var lastScale = 8,
+          nextScale = 8,
+          j,
+          deltaScale;
+        for (j = 0; j < count; j++) {
+          if (nextScale !== 0) {
+            deltaScale = expGolombDecoder.readExpGolomb();
+            nextScale = (lastScale + deltaScale + 256) % 256;
+          }
+          lastScale = nextScale === 0 ? lastScale : nextScale;
+        }
+      };
+      /**
+       * Expunge any "Emulation Prevention" bytes from a "Raw Byte
+       * Sequence Payload"
+       * @param data {Uint8Array} the bytes of a RBSP from a NAL
+       * unit
+       * @return {Uint8Array} the RBSP without any Emulation
+       * Prevention Bytes
+       */
+
+      discardEmulationPreventionBytes = function (data) {
+        var length = data.byteLength,
+          emulationPreventionBytesPositions = [],
+          i = 1,
+          newLength,
+          newData; // Find all `Emulation Prevention Bytes`
+
+        while (i < length - 2) {
+          if (data[i] === 0 && data[i + 1] === 0 && data[i + 2] === 0x03) {
+            emulationPreventionBytesPositions.push(i + 2);
+            i += 2;
+          } else {
+            i++;
+          }
+        } // If no Emulation Prevention Bytes were found just return the original
+        // array
+
+        if (emulationPreventionBytesPositions.length === 0) {
+          return data;
+        } // Create a new array to hold the NAL unit data
+
+        newLength = length - emulationPreventionBytesPositions.length;
+        newData = new Uint8Array(newLength);
+        var sourceIndex = 0;
+        for (i = 0; i < newLength; sourceIndex++, i++) {
+          if (sourceIndex === emulationPreventionBytesPositions[0]) {
+            // Skip this byte
+            sourceIndex++; // Remove this position index
+
+            emulationPreventionBytesPositions.shift();
+          }
+          newData[i] = data[sourceIndex];
+        }
+        return newData;
+      };
+      /**
+       * Read a sequence parameter set and return some interesting video
+       * properties. A sequence parameter set is the H264 metadata that
+       * describes the properties of upcoming video frames.
+       * @param data {Uint8Array} the bytes of a sequence parameter set
+       * @return {object} an object with configuration parsed from the
+       * sequence parameter set, including the dimensions of the
+       * associated video frames.
+       */
+
+      readSequenceParameterSet = function (data) {
+        var frameCropLeftOffset = 0,
+          frameCropRightOffset = 0,
+          frameCropTopOffset = 0,
+          frameCropBottomOffset = 0,
+          expGolombDecoder,
+          profileIdc,
+          levelIdc,
+          profileCompatibility,
+          chromaFormatIdc,
+          picOrderCntType,
+          numRefFramesInPicOrderCntCycle,
+          picWidthInMbsMinus1,
+          picHeightInMapUnitsMinus1,
+          frameMbsOnlyFlag,
+          scalingListCount,
+          sarRatio = [1, 1],
+          aspectRatioIdc,
+          i;
+        expGolombDecoder = new ExpGolomb(data);
+        profileIdc = expGolombDecoder.readUnsignedByte(); // profile_idc
+
+        profileCompatibility = expGolombDecoder.readUnsignedByte(); // constraint_set[0-5]_flag
+
+        levelIdc = expGolombDecoder.readUnsignedByte(); // level_idc u(8)
+
+        expGolombDecoder.skipUnsignedExpGolomb(); // seq_parameter_set_id
+        // some profiles have more optional data we don't need
+
+        if (PROFILES_WITH_OPTIONAL_SPS_DATA[profileIdc]) {
+          chromaFormatIdc = expGolombDecoder.readUnsignedExpGolomb();
+          if (chromaFormatIdc === 3) {
+            expGolombDecoder.skipBits(1); // separate_colour_plane_flag
+          }
+
+          expGolombDecoder.skipUnsignedExpGolomb(); // bit_depth_luma_minus8
+
+          expGolombDecoder.skipUnsignedExpGolomb(); // bit_depth_chroma_minus8
+
+          expGolombDecoder.skipBits(1); // qpprime_y_zero_transform_bypass_flag
+
+          if (expGolombDecoder.readBoolean()) {
+            // seq_scaling_matrix_present_flag
+            scalingListCount = chromaFormatIdc !== 3 ? 8 : 12;
+            for (i = 0; i < scalingListCount; i++) {
+              if (expGolombDecoder.readBoolean()) {
+                // seq_scaling_list_present_flag[ i ]
+                if (i < 6) {
+                  skipScalingList(16, expGolombDecoder);
+                } else {
+                  skipScalingList(64, expGolombDecoder);
+                }
+              }
+            }
+          }
+        }
+        expGolombDecoder.skipUnsignedExpGolomb(); // log2_max_frame_num_minus4
+
+        picOrderCntType = expGolombDecoder.readUnsignedExpGolomb();
+        if (picOrderCntType === 0) {
+          expGolombDecoder.readUnsignedExpGolomb(); // log2_max_pic_order_cnt_lsb_minus4
+        } else if (picOrderCntType === 1) {
+          expGolombDecoder.skipBits(1); // delta_pic_order_always_zero_flag
+
+          expGolombDecoder.skipExpGolomb(); // offset_for_non_ref_pic
+
+          expGolombDecoder.skipExpGolomb(); // offset_for_top_to_bottom_field
+
+          numRefFramesInPicOrderCntCycle = expGolombDecoder.readUnsignedExpGolomb();
+          for (i = 0; i < numRefFramesInPicOrderCntCycle; i++) {
+            expGolombDecoder.skipExpGolomb(); // offset_for_ref_frame[ i ]
+          }
+        }
+
+        expGolombDecoder.skipUnsignedExpGolomb(); // max_num_ref_frames
+
+        expGolombDecoder.skipBits(1); // gaps_in_frame_num_value_allowed_flag
+
+        picWidthInMbsMinus1 = expGolombDecoder.readUnsignedExpGolomb();
+        picHeightInMapUnitsMinus1 = expGolombDecoder.readUnsignedExpGolomb();
+        frameMbsOnlyFlag = expGolombDecoder.readBits(1);
+        if (frameMbsOnlyFlag === 0) {
+          expGolombDecoder.skipBits(1); // mb_adaptive_frame_field_flag
+        }
+
+        expGolombDecoder.skipBits(1); // direct_8x8_inference_flag
+
+        if (expGolombDecoder.readBoolean()) {
+          // frame_cropping_flag
+          frameCropLeftOffset = expGolombDecoder.readUnsignedExpGolomb();
+          frameCropRightOffset = expGolombDecoder.readUnsignedExpGolomb();
+          frameCropTopOffset = expGolombDecoder.readUnsignedExpGolomb();
+          frameCropBottomOffset = expGolombDecoder.readUnsignedExpGolomb();
+        }
+        if (expGolombDecoder.readBoolean()) {
+          // vui_parameters_present_flag
+          if (expGolombDecoder.readBoolean()) {
+            // aspect_ratio_info_present_flag
+            aspectRatioIdc = expGolombDecoder.readUnsignedByte();
+            switch (aspectRatioIdc) {
+              case 1:
+                sarRatio = [1, 1];
+                break;
+              case 2:
+                sarRatio = [12, 11];
+                break;
+              case 3:
+                sarRatio = [10, 11];
+                break;
+              case 4:
+                sarRatio = [16, 11];
+                break;
+              case 5:
+                sarRatio = [40, 33];
+                break;
+              case 6:
+                sarRatio = [24, 11];
+                break;
+              case 7:
+                sarRatio = [20, 11];
+                break;
+              case 8:
+                sarRatio = [32, 11];
+                break;
+              case 9:
+                sarRatio = [80, 33];
+                break;
+              case 10:
+                sarRatio = [18, 11];
+                break;
+              case 11:
+                sarRatio = [15, 11];
+                break;
+              case 12:
+                sarRatio = [64, 33];
+                break;
+              case 13:
+                sarRatio = [160, 99];
+                break;
+              case 14:
+                sarRatio = [4, 3];
+                break;
+              case 15:
+                sarRatio = [3, 2];
+                break;
+              case 16:
+                sarRatio = [2, 1];
+                break;
+              case 255:
+                {
+                  sarRatio = [expGolombDecoder.readUnsignedByte() << 8 | expGolombDecoder.readUnsignedByte(), expGolombDecoder.readUnsignedByte() << 8 | expGolombDecoder.readUnsignedByte()];
+                  break;
+                }
+            }
+            if (sarRatio) {
+              sarRatio[0] / sarRatio[1];
+            }
+          }
+        }
+        return {
+          profileIdc: profileIdc,
+          levelIdc: levelIdc,
+          profileCompatibility: profileCompatibility,
+          width: (picWidthInMbsMinus1 + 1) * 16 - frameCropLeftOffset * 2 - frameCropRightOffset * 2,
+          height: (2 - frameMbsOnlyFlag) * (picHeightInMapUnitsMinus1 + 1) * 16 - frameCropTopOffset * 2 - frameCropBottomOffset * 2,
+          // sar is sample aspect ratio
+          sarRatio: sarRatio
+        };
+      };
+    };
+    H264Stream$1.prototype = new Stream$2();
+    var h264 = {
+      H264Stream: H264Stream$1,
+      NalByteStream: NalByteStream
+    };
+    /**
+     * mux.js
+     *
+     * Copyright (c) Brightcove
+     * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE
+     *
+     * Utilities to detect basic properties and metadata about Aac data.
+     */
+
+    var ADTS_SAMPLING_FREQUENCIES = [96000, 88200, 64000, 48000, 44100, 32000, 24000, 22050, 16000, 12000, 11025, 8000, 7350];
+    var parseId3TagSize = function (header, byteIndex) {
+      var returnSize = header[byteIndex + 6] << 21 | header[byteIndex + 7] << 14 | header[byteIndex + 8] << 7 | header[byteIndex + 9],
+        flags = header[byteIndex + 5],
+        footerPresent = (flags & 16) >> 4; // if we get a negative returnSize clamp it to 0
+
+      returnSize = returnSize >= 0 ? returnSize : 0;
+      if (footerPresent) {
+        return returnSize + 20;
+      }
+      return returnSize + 10;
+    };
+    var getId3Offset = function (data, offset) {
+      if (data.length - offset < 10 || data[offset] !== 'I'.charCodeAt(0) || data[offset + 1] !== 'D'.charCodeAt(0) || data[offset + 2] !== '3'.charCodeAt(0)) {
+        return offset;
+      }
+      offset += parseId3TagSize(data, offset);
+      return getId3Offset(data, offset);
+    }; // TODO: use vhs-utils
+
+    var isLikelyAacData$1 = function (data) {
+      var offset = getId3Offset(data, 0);
+      return data.length >= offset + 2 && (data[offset] & 0xFF) === 0xFF && (data[offset + 1] & 0xF0) === 0xF0 &&
+      // verify that the 2 layer bits are 0, aka this
+      // is not mp3 data but aac data.
+      (data[offset + 1] & 0x16) === 0x10;
+    };
+    var parseSyncSafeInteger = function (data) {
+      return data[0] << 21 | data[1] << 14 | data[2] << 7 | data[3];
+    }; // return a percent-encoded representation of the specified byte range
+    // @see http://en.wikipedia.org/wiki/Percent-encoding
+
+    var percentEncode = function (bytes, start, end) {
+      var i,
+        result = '';
+      for (i = start; i < end; i++) {
+        result += '%' + ('00' + bytes[i].toString(16)).slice(-2);
+      }
+      return result;
+    }; // return the string representation of the specified byte range,
+    // interpreted as ISO-8859-1.
+
+    var parseIso88591 = function (bytes, start, end) {
+      return unescape(percentEncode(bytes, start, end)); // jshint ignore:line
+    };
+
+    var parseAdtsSize = function (header, byteIndex) {
+      var lowThree = (header[byteIndex + 5] & 0xE0) >> 5,
+        middle = header[byteIndex + 4] << 3,
+        highTwo = header[byteIndex + 3] & 0x3 << 11;
+      return highTwo | middle | lowThree;
+    };
+    var parseType$4 = function (header, byteIndex) {
+      if (header[byteIndex] === 'I'.charCodeAt(0) && header[byteIndex + 1] === 'D'.charCodeAt(0) && header[byteIndex + 2] === '3'.charCodeAt(0)) {
+        return 'timed-metadata';
+      } else if (header[byteIndex] & 0xff === 0xff && (header[byteIndex + 1] & 0xf0) === 0xf0) {
+        return 'audio';
+      }
+      return null;
+    };
+    var parseSampleRate = function (packet) {
+      var i = 0;
+      while (i + 5 < packet.length) {
+        if (packet[i] !== 0xFF || (packet[i + 1] & 0xF6) !== 0xF0) {
+          // If a valid header was not found,  jump one forward and attempt to
+          // find a valid ADTS header starting at the next byte
+          i++;
+          continue;
+        }
+        return ADTS_SAMPLING_FREQUENCIES[(packet[i + 2] & 0x3c) >>> 2];
+      }
+      return null;
+    };
+    var parseAacTimestamp = function (packet) {
+      var frameStart, frameSize, frame, frameHeader; // find the start of the first frame and the end of the tag
+
+      frameStart = 10;
+      if (packet[5] & 0x40) {
+        // advance the frame start past the extended header
+        frameStart += 4; // header size field
+
+        frameStart += parseSyncSafeInteger(packet.subarray(10, 14));
+      } // parse one or more ID3 frames
+      // http://id3.org/id3v2.3.0#ID3v2_frame_overview
+
+      do {
+        // determine the number of bytes in this frame
+        frameSize = parseSyncSafeInteger(packet.subarray(frameStart + 4, frameStart + 8));
+        if (frameSize < 1) {
+          return null;
+        }
+        frameHeader = String.fromCharCode(packet[frameStart], packet[frameStart + 1], packet[frameStart + 2], packet[frameStart + 3]);
+        if (frameHeader === 'PRIV') {
+          frame = packet.subarray(frameStart + 10, frameStart + frameSize + 10);
+          for (var i = 0; i < frame.byteLength; i++) {
+            if (frame[i] === 0) {
+              var owner = parseIso88591(frame, 0, i);
+              if (owner === 'com.apple.streaming.transportStreamTimestamp') {
+                var d = frame.subarray(i + 1);
+                var size = (d[3] & 0x01) << 30 | d[4] << 22 | d[5] << 14 | d[6] << 6 | d[7] >>> 2;
+                size *= 4;
+                size += d[7] & 0x03;
+                return size;
+              }
+              break;
+            }
+          }
+        }
+        frameStart += 10; // advance past the frame header
+
+        frameStart += frameSize; // advance past the frame body
+      } while (frameStart < packet.byteLength);
+      return null;
+    };
+    var utils = {
+      isLikelyAacData: isLikelyAacData$1,
+      parseId3TagSize: parseId3TagSize,
+      parseAdtsSize: parseAdtsSize,
+      parseType: parseType$4,
+      parseSampleRate: parseSampleRate,
+      parseAacTimestamp: parseAacTimestamp
+    };
+    /**
+     * mux.js
+     *
+     * Copyright (c) Brightcove
+     * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE
+     *
+     * A stream-based aac to mp4 converter. This utility can be used to
+     * deliver mp4s to a SourceBuffer on platforms that support native
+     * Media Source Extensions.
+     */
+
+    var Stream$1 = stream;
+    var aacUtils = utils; // Constants
+
+    var AacStream$1;
+    /**
+     * Splits an incoming stream of binary data into ADTS and ID3 Frames.
+     */
+
+    AacStream$1 = function () {
+      var everything = new Uint8Array(),
+        timeStamp = 0;
+      AacStream$1.prototype.init.call(this);
+      this.setTimestamp = function (timestamp) {
+        timeStamp = timestamp;
+      };
+      this.push = function (bytes) {
+        var frameSize = 0,
+          byteIndex = 0,
+          bytesLeft,
+          chunk,
+          packet,
+          tempLength; // If there are bytes remaining from the last segment, prepend them to the
+        // bytes that were pushed in
+
+        if (everything.length) {
+          tempLength = everything.length;
+          everything = new Uint8Array(bytes.byteLength + tempLength);
+          everything.set(everything.subarray(0, tempLength));
+          everything.set(bytes, tempLength);
+        } else {
+          everything = bytes;
+        }
+        while (everything.length - byteIndex >= 3) {
+          if (everything[byteIndex] === 'I'.charCodeAt(0) && everything[byteIndex + 1] === 'D'.charCodeAt(0) && everything[byteIndex + 2] === '3'.charCodeAt(0)) {
+            // Exit early because we don't have enough to parse
+            // the ID3 tag header
+            if (everything.length - byteIndex < 10) {
+              break;
+            } // check framesize
+
+            frameSize = aacUtils.parseId3TagSize(everything, byteIndex); // Exit early if we don't have enough in the buffer
+            // to emit a full packet
+            // Add to byteIndex to support multiple ID3 tags in sequence
+
+            if (byteIndex + frameSize > everything.length) {
+              break;
+            }
+            chunk = {
+              type: 'timed-metadata',
+              data: everything.subarray(byteIndex, byteIndex + frameSize)
+            };
+            this.trigger('data', chunk);
+            byteIndex += frameSize;
+            continue;
+          } else if ((everything[byteIndex] & 0xff) === 0xff && (everything[byteIndex + 1] & 0xf0) === 0xf0) {
+            // Exit early because we don't have enough to parse
+            // the ADTS frame header
+            if (everything.length - byteIndex < 7) {
+              break;
+            }
+            frameSize = aacUtils.parseAdtsSize(everything, byteIndex); // Exit early if we don't have enough in the buffer
+            // to emit a full packet
+
+            if (byteIndex + frameSize > everything.length) {
+              break;
+            }
+            packet = {
+              type: 'audio',
+              data: everything.subarray(byteIndex, byteIndex + frameSize),
+              pts: timeStamp,
+              dts: timeStamp
+            };
+            this.trigger('data', packet);
+            byteIndex += frameSize;
+            continue;
+          }
+          byteIndex++;
+        }
+        bytesLeft = everything.length - byteIndex;
+        if (bytesLeft > 0) {
+          everything = everything.subarray(byteIndex);
+        } else {
+          everything = new Uint8Array();
+        }
+      };
+      this.reset = function () {
+        everything = new Uint8Array();
+        this.trigger('reset');
+      };
+      this.endTimeline = function () {
+        everything = new Uint8Array();
+        this.trigger('endedtimeline');
+      };
+    };
+    AacStream$1.prototype = new Stream$1();
+    var aac = AacStream$1;
+    var AUDIO_PROPERTIES$1 = ['audioobjecttype', 'channelcount', 'samplerate', 'samplingfrequencyindex', 'samplesize'];
+    var audioProperties = AUDIO_PROPERTIES$1;
+    var VIDEO_PROPERTIES$1 = ['width', 'height', 'profileIdc', 'levelIdc', 'profileCompatibility', 'sarRatio'];
+    var videoProperties = VIDEO_PROPERTIES$1;
+    /**
+     * mux.js
+     *
+     * Copyright (c) Brightcove
+     * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE
+     *
+     * A stream-based mp2t to mp4 converter. This utility can be used to
+     * deliver mp4s to a SourceBuffer on platforms that support native
+     * Media Source Extensions.
+     */
+
+    var Stream = stream;
+    var mp4 = mp4Generator;
+    var frameUtils = frameUtils$1;
+    var audioFrameUtils = audioFrameUtils$1;
+    var trackDecodeInfo = trackDecodeInfo$1;
+    var m2ts = m2ts_1;
+    var clock = clock$2;
+    var AdtsStream = adts;
+    var H264Stream = h264.H264Stream;
+    var AacStream = aac;
+    var isLikelyAacData = utils.isLikelyAacData;
+    var ONE_SECOND_IN_TS$1 = clock$2.ONE_SECOND_IN_TS;
+    var AUDIO_PROPERTIES = audioProperties;
+    var VIDEO_PROPERTIES = videoProperties; // object types
+
+    var VideoSegmentStream, AudioSegmentStream, Transmuxer, CoalesceStream;
+    var retriggerForStream = function (key, event) {
+      event.stream = key;
+      this.trigger('log', event);
+    };
+    var addPipelineLogRetriggers = function (transmuxer, pipeline) {
+      var keys = Object.keys(pipeline);
+      for (var i = 0; i < keys.length; i++) {
+        var key = keys[i]; // skip non-stream keys and headOfPipeline
+        // which is just a duplicate
+
+        if (key === 'headOfPipeline' || !pipeline[key].on) {
+          continue;
+        }
+        pipeline[key].on('log', retriggerForStream.bind(transmuxer, key));
+      }
+    };
+    /**
+     * Compare two arrays (even typed) for same-ness
+     */
+
+    var arrayEquals = function (a, b) {
+      var i;
+      if (a.length !== b.length) {
+        return false;
+      } // compare the value of each element in the array
+
+      for (i = 0; i < a.length; i++) {
+        if (a[i] !== b[i]) {
+          return false;
+        }
+      }
+      return true;
+    };
+    var generateSegmentTimingInfo = function (baseMediaDecodeTime, startDts, startPts, endDts, endPts, prependedContentDuration) {
+      var ptsOffsetFromDts = startPts - startDts,
+        decodeDuration = endDts - startDts,
+        presentationDuration = endPts - startPts; // The PTS and DTS values are based on the actual stream times from the segment,
+      // however, the player time values will reflect a start from the baseMediaDecodeTime.
+      // In order to provide relevant values for the player times, base timing info on the
+      // baseMediaDecodeTime and the DTS and PTS durations of the segment.
+
+      return {
+        start: {
+          dts: baseMediaDecodeTime,
+          pts: baseMediaDecodeTime + ptsOffsetFromDts
+        },
+        end: {
+          dts: baseMediaDecodeTime + decodeDuration,
+          pts: baseMediaDecodeTime + presentationDuration
+        },
+        prependedContentDuration: prependedContentDuration,
+        baseMediaDecodeTime: baseMediaDecodeTime
+      };
+    };
+    /**
+     * Constructs a single-track, ISO BMFF media segment from AAC data
+     * events. The output of this stream can be fed to a SourceBuffer
+     * configured with a suitable initialization segment.
+     * @param track {object} track metadata configuration
+     * @param options {object} transmuxer options object
+     * @param options.keepOriginalTimestamps {boolean} If true, keep the timestamps
+     *        in the source; false to adjust the first segment to start at 0.
+     */
+
+    AudioSegmentStream = function (track, options) {
+      var adtsFrames = [],
+        sequenceNumber,
+        earliestAllowedDts = 0,
+        audioAppendStartTs = 0,
+        videoBaseMediaDecodeTime = Infinity;
+      options = options || {};
+      sequenceNumber = options.firstSequenceNumber || 0;
+      AudioSegmentStream.prototype.init.call(this);
+      this.push = function (data) {
+        trackDecodeInfo.collectDtsInfo(track, data);
+        if (track) {
+          AUDIO_PROPERTIES.forEach(function (prop) {
+            track[prop] = data[prop];
+          });
+        } // buffer audio data until end() is called
+
+        adtsFrames.push(data);
+      };
+      this.setEarliestDts = function (earliestDts) {
+        earliestAllowedDts = earliestDts;
+      };
+      this.setVideoBaseMediaDecodeTime = function (baseMediaDecodeTime) {
+        videoBaseMediaDecodeTime = baseMediaDecodeTime;
+      };
+      this.setAudioAppendStart = function (timestamp) {
+        audioAppendStartTs = timestamp;
+      };
+      this.flush = function () {
+        var frames, moof, mdat, boxes, frameDuration, segmentDuration, videoClockCyclesOfSilencePrefixed; // return early if no audio data has been observed
+
+        if (adtsFrames.length === 0) {
+          this.trigger('done', 'AudioSegmentStream');
+          return;
+        }
+        frames = audioFrameUtils.trimAdtsFramesByEarliestDts(adtsFrames, track, earliestAllowedDts);
+        track.baseMediaDecodeTime = trackDecodeInfo.calculateTrackBaseMediaDecodeTime(track, options.keepOriginalTimestamps); // amount of audio filled but the value is in video clock rather than audio clock
+
+        videoClockCyclesOfSilencePrefixed = audioFrameUtils.prefixWithSilence(track, frames, audioAppendStartTs, videoBaseMediaDecodeTime); // we have to build the index from byte locations to
+        // samples (that is, adts frames) in the audio data
+
+        track.samples = audioFrameUtils.generateSampleTable(frames); // concatenate the audio data to constuct the mdat
+
+        mdat = mp4.mdat(audioFrameUtils.concatenateFrameData(frames));
+        adtsFrames = [];
+        moof = mp4.moof(sequenceNumber, [track]);
+        boxes = new Uint8Array(moof.byteLength + mdat.byteLength); // bump the sequence number for next time
+
+        sequenceNumber++;
+        boxes.set(moof);
+        boxes.set(mdat, moof.byteLength);
+        trackDecodeInfo.clearDtsInfo(track);
+        frameDuration = Math.ceil(ONE_SECOND_IN_TS$1 * 1024 / track.samplerate); // TODO this check was added to maintain backwards compatibility (particularly with
+        // tests) on adding the timingInfo event. However, it seems unlikely that there's a
+        // valid use-case where an init segment/data should be triggered without associated
+        // frames. Leaving for now, but should be looked into.
+
+        if (frames.length) {
+          segmentDuration = frames.length * frameDuration;
+          this.trigger('segmentTimingInfo', generateSegmentTimingInfo(
+          // The audio track's baseMediaDecodeTime is in audio clock cycles, but the
+          // frame info is in video clock cycles. Convert to match expectation of
+          // listeners (that all timestamps will be based on video clock cycles).
+          clock.audioTsToVideoTs(track.baseMediaDecodeTime, track.samplerate),
+          // frame times are already in video clock, as is segment duration
+          frames[0].dts, frames[0].pts, frames[0].dts + segmentDuration, frames[0].pts + segmentDuration, videoClockCyclesOfSilencePrefixed || 0));
+          this.trigger('timingInfo', {
+            start: frames[0].pts,
+            end: frames[0].pts + segmentDuration
+          });
+        }
+        this.trigger('data', {
+          track: track,
+          boxes: boxes
+        });
+        this.trigger('done', 'AudioSegmentStream');
+      };
+      this.reset = function () {
+        trackDecodeInfo.clearDtsInfo(track);
+        adtsFrames = [];
+        this.trigger('reset');
+      };
+    };
+    AudioSegmentStream.prototype = new Stream();
+    /**
+     * Constructs a single-track, ISO BMFF media segment from H264 data
+     * events. The output of this stream can be fed to a SourceBuffer
+     * configured with a suitable initialization segment.
+     * @param track {object} track metadata configuration
+     * @param options {object} transmuxer options object
+     * @param options.alignGopsAtEnd {boolean} If true, start from the end of the
+     *        gopsToAlignWith list when attempting to align gop pts
+     * @param options.keepOriginalTimestamps {boolean} If true, keep the timestamps
+     *        in the source; false to adjust the first segment to start at 0.
+     */
+
+    VideoSegmentStream = function (track, options) {
+      var sequenceNumber,
+        nalUnits = [],
+        gopsToAlignWith = [],
+        config,
+        pps;
+      options = options || {};
+      sequenceNumber = options.firstSequenceNumber || 0;
+      VideoSegmentStream.prototype.init.call(this);
+      delete track.minPTS;
+      this.gopCache_ = [];
+      /**
+        * Constructs a ISO BMFF segment given H264 nalUnits
+        * @param {Object} nalUnit A data event representing a nalUnit
+        * @param {String} nalUnit.nalUnitType
+        * @param {Object} nalUnit.config Properties for a mp4 track
+        * @param {Uint8Array} nalUnit.data The nalUnit bytes
+        * @see lib/codecs/h264.js
+       **/
+
+      this.push = function (nalUnit) {
+        trackDecodeInfo.collectDtsInfo(track, nalUnit); // record the track config
+
+        if (nalUnit.nalUnitType === 'seq_parameter_set_rbsp' && !config) {
+          config = nalUnit.config;
+          track.sps = [nalUnit.data];
+          VIDEO_PROPERTIES.forEach(function (prop) {
+            track[prop] = config[prop];
+          }, this);
+        }
+        if (nalUnit.nalUnitType === 'pic_parameter_set_rbsp' && !pps) {
+          pps = nalUnit.data;
+          track.pps = [nalUnit.data];
+        } // buffer video until flush() is called
+
+        nalUnits.push(nalUnit);
+      };
+      /**
+        * Pass constructed ISO BMFF track and boxes on to the
+        * next stream in the pipeline
+       **/
+
+      this.flush = function () {
+        var frames,
+          gopForFusion,
+          gops,
+          moof,
+          mdat,
+          boxes,
+          prependedContentDuration = 0,
+          firstGop,
+          lastGop; // Throw away nalUnits at the start of the byte stream until
+        // we find the first AUD
+
+        while (nalUnits.length) {
+          if (nalUnits[0].nalUnitType === 'access_unit_delimiter_rbsp') {
+            break;
+          }
+          nalUnits.shift();
+        } // Return early if no video data has been observed
+
+        if (nalUnits.length === 0) {
+          this.resetStream_();
+          this.trigger('done', 'VideoSegmentStream');
+          return;
+        } // Organize the raw nal-units into arrays that represent
+        // higher-level constructs such as frames and gops
+        // (group-of-pictures)
+
+        frames = frameUtils.groupNalsIntoFrames(nalUnits);
+        gops = frameUtils.groupFramesIntoGops(frames); // If the first frame of this fragment is not a keyframe we have
+        // a problem since MSE (on Chrome) requires a leading keyframe.
+        //
+        // We have two approaches to repairing this situation:
+        // 1) GOP-FUSION:
+        //    This is where we keep track of the GOPS (group-of-pictures)
+        //    from previous fragments and attempt to find one that we can
+        //    prepend to the current fragment in order to create a valid
+        //    fragment.
+        // 2) KEYFRAME-PULLING:
+        //    Here we search for the first keyframe in the fragment and
+        //    throw away all the frames between the start of the fragment
+        //    and that keyframe. We then extend the duration and pull the
+        //    PTS of the keyframe forward so that it covers the time range
+        //    of the frames that were disposed of.
+        //
+        // #1 is far prefereable over #2 which can cause "stuttering" but
+        // requires more things to be just right.
+
+        if (!gops[0][0].keyFrame) {
+          // Search for a gop for fusion from our gopCache
+          gopForFusion = this.getGopForFusion_(nalUnits[0], track);
+          if (gopForFusion) {
+            // in order to provide more accurate timing information about the segment, save
+            // the number of seconds prepended to the original segment due to GOP fusion
+            prependedContentDuration = gopForFusion.duration;
+            gops.unshift(gopForFusion); // Adjust Gops' metadata to account for the inclusion of the
+            // new gop at the beginning
+
+            gops.byteLength += gopForFusion.byteLength;
+            gops.nalCount += gopForFusion.nalCount;
+            gops.pts = gopForFusion.pts;
+            gops.dts = gopForFusion.dts;
+            gops.duration += gopForFusion.duration;
+          } else {
+            // If we didn't find a candidate gop fall back to keyframe-pulling
+            gops = frameUtils.extendFirstKeyFrame(gops);
+          }
+        } // Trim gops to align with gopsToAlignWith
+
+        if (gopsToAlignWith.length) {
+          var alignedGops;
+          if (options.alignGopsAtEnd) {
+            alignedGops = this.alignGopsAtEnd_(gops);
+          } else {
+            alignedGops = this.alignGopsAtStart_(gops);
+          }
+          if (!alignedGops) {
+            // save all the nals in the last GOP into the gop cache
+            this.gopCache_.unshift({
+              gop: gops.pop(),
+              pps: track.pps,
+              sps: track.sps
+            }); // Keep a maximum of 6 GOPs in the cache
+
+            this.gopCache_.length = Math.min(6, this.gopCache_.length); // Clear nalUnits
+
+            nalUnits = []; // return early no gops can be aligned with desired gopsToAlignWith
+
+            this.resetStream_();
+            this.trigger('done', 'VideoSegmentStream');
+            return;
+          } // Some gops were trimmed. clear dts info so minSegmentDts and pts are correct
+          // when recalculated before sending off to CoalesceStream
+
+          trackDecodeInfo.clearDtsInfo(track);
+          gops = alignedGops;
+        }
+        trackDecodeInfo.collectDtsInfo(track, gops); // First, we have to build the index from byte locations to
+        // samples (that is, frames) in the video data
+
+        track.samples = frameUtils.generateSampleTable(gops); // Concatenate the video data and construct the mdat
+
+        mdat = mp4.mdat(frameUtils.concatenateNalData(gops));
+        track.baseMediaDecodeTime = trackDecodeInfo.calculateTrackBaseMediaDecodeTime(track, options.keepOriginalTimestamps);
+        this.trigger('processedGopsInfo', gops.map(function (gop) {
+          return {
+            pts: gop.pts,
+            dts: gop.dts,
+            byteLength: gop.byteLength
+          };
+        }));
+        firstGop = gops[0];
+        lastGop = gops[gops.length - 1];
+        this.trigger('segmentTimingInfo', generateSegmentTimingInfo(track.baseMediaDecodeTime, firstGop.dts, firstGop.pts, lastGop.dts + lastGop.duration, lastGop.pts + lastGop.duration, prependedContentDuration));
+        this.trigger('timingInfo', {
+          start: gops[0].pts,
+          end: gops[gops.length - 1].pts + gops[gops.length - 1].duration
+        }); // save all the nals in the last GOP into the gop cache
+
+        this.gopCache_.unshift({
+          gop: gops.pop(),
+          pps: track.pps,
+          sps: track.sps
+        }); // Keep a maximum of 6 GOPs in the cache
+
+        this.gopCache_.length = Math.min(6, this.gopCache_.length); // Clear nalUnits
+
+        nalUnits = [];
+        this.trigger('baseMediaDecodeTime', track.baseMediaDecodeTime);
+        this.trigger('timelineStartInfo', track.timelineStartInfo);
+        moof = mp4.moof(sequenceNumber, [track]); // it would be great to allocate this array up front instead of
+        // throwing away hundreds of media segment fragments
+
+        boxes = new Uint8Array(moof.byteLength + mdat.byteLength); // Bump the sequence number for next time
+
+        sequenceNumber++;
+        boxes.set(moof);
+        boxes.set(mdat, moof.byteLength);
+        this.trigger('data', {
+          track: track,
+          boxes: boxes
+        });
+        this.resetStream_(); // Continue with the flush process now
+
+        this.trigger('done', 'VideoSegmentStream');
+      };
+      this.reset = function () {
+        this.resetStream_();
+        nalUnits = [];
+        this.gopCache_.length = 0;
+        gopsToAlignWith.length = 0;
+        this.trigger('reset');
+      };
+      this.resetStream_ = function () {
+        trackDecodeInfo.clearDtsInfo(track); // reset config and pps because they may differ across segments
+        // for instance, when we are rendition switching
+
+        config = undefined;
+        pps = undefined;
+      }; // Search for a candidate Gop for gop-fusion from the gop cache and
+      // return it or return null if no good candidate was found
+
+      this.getGopForFusion_ = function (nalUnit) {
+        var halfSecond = 45000,
+          // Half-a-second in a 90khz clock
+          allowableOverlap = 10000,
+          // About 3 frames @ 30fps
+          nearestDistance = Infinity,
+          dtsDistance,
+          nearestGopObj,
+          currentGop,
+          currentGopObj,
+          i; // Search for the GOP nearest to the beginning of this nal unit
+
+        for (i = 0; i < this.gopCache_.length; i++) {
+          currentGopObj = this.gopCache_[i];
+          currentGop = currentGopObj.gop; // Reject Gops with different SPS or PPS
+
+          if (!(track.pps && arrayEquals(track.pps[0], currentGopObj.pps[0])) || !(track.sps && arrayEquals(track.sps[0], currentGopObj.sps[0]))) {
+            continue;
+          } // Reject Gops that would require a negative baseMediaDecodeTime
+
+          if (currentGop.dts < track.timelineStartInfo.dts) {
+            continue;
+          } // The distance between the end of the gop and the start of the nalUnit
+
+          dtsDistance = nalUnit.dts - currentGop.dts - currentGop.duration; // Only consider GOPS that start before the nal unit and end within
+          // a half-second of the nal unit
+
+          if (dtsDistance >= -allowableOverlap && dtsDistance <= halfSecond) {
+            // Always use the closest GOP we found if there is more than
+            // one candidate
+            if (!nearestGopObj || nearestDistance > dtsDistance) {
+              nearestGopObj = currentGopObj;
+              nearestDistance = dtsDistance;
+            }
+          }
+        }
+        if (nearestGopObj) {
+          return nearestGopObj.gop;
+        }
+        return null;
+      }; // trim gop list to the first gop found that has a matching pts with a gop in the list
+      // of gopsToAlignWith starting from the START of the list
+
+      this.alignGopsAtStart_ = function (gops) {
+        var alignIndex, gopIndex, align, gop, byteLength, nalCount, duration, alignedGops;
+        byteLength = gops.byteLength;
+        nalCount = gops.nalCount;
+        duration = gops.duration;
+        alignIndex = gopIndex = 0;
+        while (alignIndex < gopsToAlignWith.length && gopIndex < gops.length) {
+          align = gopsToAlignWith[alignIndex];
+          gop = gops[gopIndex];
+          if (align.pts === gop.pts) {
+            break;
+          }
+          if (gop.pts > align.pts) {
+            // this current gop starts after the current gop we want to align on, so increment
+            // align index
+            alignIndex++;
+            continue;
+          } // current gop starts before the current gop we want to align on. so increment gop
+          // index
+
+          gopIndex++;
+          byteLength -= gop.byteLength;
+          nalCount -= gop.nalCount;
+          duration -= gop.duration;
+        }
+        if (gopIndex === 0) {
+          // no gops to trim
+          return gops;
+        }
+        if (gopIndex === gops.length) {
+          // all gops trimmed, skip appending all gops
+          return null;
+        }
+        alignedGops = gops.slice(gopIndex);
+        alignedGops.byteLength = byteLength;
+        alignedGops.duration = duration;
+        alignedGops.nalCount = nalCount;
+        alignedGops.pts = alignedGops[0].pts;
+        alignedGops.dts = alignedGops[0].dts;
+        return alignedGops;
+      }; // trim gop list to the first gop found that has a matching pts with a gop in the list
+      // of gopsToAlignWith starting from the END of the list
+
+      this.alignGopsAtEnd_ = function (gops) {
+        var alignIndex, gopIndex, align, gop, alignEndIndex, matchFound;
+        alignIndex = gopsToAlignWith.length - 1;
+        gopIndex = gops.length - 1;
+        alignEndIndex = null;
+        matchFound = false;
+        while (alignIndex >= 0 && gopIndex >= 0) {
+          align = gopsToAlignWith[alignIndex];
+          gop = gops[gopIndex];
+          if (align.pts === gop.pts) {
+            matchFound = true;
+            break;
+          }
+          if (align.pts > gop.pts) {
+            alignIndex--;
+            continue;
+          }
+          if (alignIndex === gopsToAlignWith.length - 1) {
+            // gop.pts is greater than the last alignment candidate. If no match is found
+            // by the end of this loop, we still want to append gops that come after this
+            // point
+            alignEndIndex = gopIndex;
+          }
+          gopIndex--;
+        }
+        if (!matchFound && alignEndIndex === null) {
+          return null;
+        }
+        var trimIndex;
+        if (matchFound) {
+          trimIndex = gopIndex;
+        } else {
+          trimIndex = alignEndIndex;
+        }
+        if (trimIndex === 0) {
+          return gops;
+        }
+        var alignedGops = gops.slice(trimIndex);
+        var metadata = alignedGops.reduce(function (total, gop) {
+          total.byteLength += gop.byteLength;
+          total.duration += gop.duration;
+          total.nalCount += gop.nalCount;
+          return total;
+        }, {
+          byteLength: 0,
+          duration: 0,
+          nalCount: 0
+        });
+        alignedGops.byteLength = metadata.byteLength;
+        alignedGops.duration = metadata.duration;
+        alignedGops.nalCount = metadata.nalCount;
+        alignedGops.pts = alignedGops[0].pts;
+        alignedGops.dts = alignedGops[0].dts;
+        return alignedGops;
+      };
+      this.alignGopsWith = function (newGopsToAlignWith) {
+        gopsToAlignWith = newGopsToAlignWith;
+      };
+    };
+    VideoSegmentStream.prototype = new Stream();
+    /**
+     * A Stream that can combine multiple streams (ie. audio & video)
+     * into a single output segment for MSE. Also supports audio-only
+     * and video-only streams.
+     * @param options {object} transmuxer options object
+     * @param options.keepOriginalTimestamps {boolean} If true, keep the timestamps
+     *        in the source; false to adjust the first segment to start at media timeline start.
+     */
+
+    CoalesceStream = function (options, metadataStream) {
+      // Number of Tracks per output segment
+      // If greater than 1, we combine multiple
+      // tracks into a single segment
+      this.numberOfTracks = 0;
+      this.metadataStream = metadataStream;
+      options = options || {};
+      if (typeof options.remux !== 'undefined') {
+        this.remuxTracks = !!options.remux;
+      } else {
+        this.remuxTracks = true;
+      }
+      if (typeof options.keepOriginalTimestamps === 'boolean') {
+        this.keepOriginalTimestamps = options.keepOriginalTimestamps;
+      } else {
+        this.keepOriginalTimestamps = false;
+      }
+      this.pendingTracks = [];
+      this.videoTrack = null;
+      this.pendingBoxes = [];
+      this.pendingCaptions = [];
+      this.pendingMetadata = [];
+      this.pendingBytes = 0;
+      this.emittedTracks = 0;
+      CoalesceStream.prototype.init.call(this); // Take output from multiple
+
+      this.push = function (output) {
+        // buffer incoming captions until the associated video segment
+        // finishes
+        if (output.content || output.text) {
+          return this.pendingCaptions.push(output);
+        } // buffer incoming id3 tags until the final flush
+
+        if (output.frames) {
+          return this.pendingMetadata.push(output);
+        } // Add this track to the list of pending tracks and store
+        // important information required for the construction of
+        // the final segment
+
+        this.pendingTracks.push(output.track);
+        this.pendingBytes += output.boxes.byteLength; // TODO: is there an issue for this against chrome?
+        // We unshift audio and push video because
+        // as of Chrome 75 when switching from
+        // one init segment to another if the video
+        // mdat does not appear after the audio mdat
+        // only audio will play for the duration of our transmux.
+
+        if (output.track.type === 'video') {
+          this.videoTrack = output.track;
+          this.pendingBoxes.push(output.boxes);
+        }
+        if (output.track.type === 'audio') {
+          this.audioTrack = output.track;
+          this.pendingBoxes.unshift(output.boxes);
+        }
+      };
+    };
+    CoalesceStream.prototype = new Stream();
+    CoalesceStream.prototype.flush = function (flushSource) {
+      var offset = 0,
+        event = {
+          captions: [],
+          captionStreams: {},
+          metadata: [],
+          info: {}
+        },
+        caption,
+        id3,
+        initSegment,
+        timelineStartPts = 0,
+        i;
+      if (this.pendingTracks.length < this.numberOfTracks) {
+        if (flushSource !== 'VideoSegmentStream' && flushSource !== 'AudioSegmentStream') {
+          // Return because we haven't received a flush from a data-generating
+          // portion of the segment (meaning that we have only recieved meta-data
+          // or captions.)
+          return;
+        } else if (this.remuxTracks) {
+          // Return until we have enough tracks from the pipeline to remux (if we
+          // are remuxing audio and video into a single MP4)
+          return;
+        } else if (this.pendingTracks.length === 0) {
+          // In the case where we receive a flush without any data having been
+          // received we consider it an emitted track for the purposes of coalescing
+          // `done` events.
+          // We do this for the case where there is an audio and video track in the
+          // segment but no audio data. (seen in several playlists with alternate
+          // audio tracks and no audio present in the main TS segments.)
+          this.emittedTracks++;
+          if (this.emittedTracks >= this.numberOfTracks) {
+            this.trigger('done');
+            this.emittedTracks = 0;
+          }
+          return;
+        }
+      }
+      if (this.videoTrack) {
+        timelineStartPts = this.videoTrack.timelineStartInfo.pts;
+        VIDEO_PROPERTIES.forEach(function (prop) {
+          event.info[prop] = this.videoTrack[prop];
+        }, this);
+      } else if (this.audioTrack) {
+        timelineStartPts = this.audioTrack.timelineStartInfo.pts;
+        AUDIO_PROPERTIES.forEach(function (prop) {
+          event.info[prop] = this.audioTrack[prop];
+        }, this);
+      }
+      if (this.videoTrack || this.audioTrack) {
+        if (this.pendingTracks.length === 1) {
+          event.type = this.pendingTracks[0].type;
+        } else {
+          event.type = 'combined';
+        }
+        this.emittedTracks += this.pendingTracks.length;
+        initSegment = mp4.initSegment(this.pendingTracks); // Create a new typed array to hold the init segment
+
+        event.initSegment = new Uint8Array(initSegment.byteLength); // Create an init segment containing a moov
+        // and track definitions
+
+        event.initSegment.set(initSegment); // Create a new typed array to hold the moof+mdats
+
+        event.data = new Uint8Array(this.pendingBytes); // Append each moof+mdat (one per track) together
+
+        for (i = 0; i < this.pendingBoxes.length; i++) {
+          event.data.set(this.pendingBoxes[i], offset);
+          offset += this.pendingBoxes[i].byteLength;
+        } // Translate caption PTS times into second offsets to match the
+        // video timeline for the segment, and add track info
+
+        for (i = 0; i < this.pendingCaptions.length; i++) {
+          caption = this.pendingCaptions[i];
+          caption.startTime = clock.metadataTsToSeconds(caption.startPts, timelineStartPts, this.keepOriginalTimestamps);
+          caption.endTime = clock.metadataTsToSeconds(caption.endPts, timelineStartPts, this.keepOriginalTimestamps);
+          event.captionStreams[caption.stream] = true;
+          event.captions.push(caption);
+        } // Translate ID3 frame PTS times into second offsets to match the
+        // video timeline for the segment
+
+        for (i = 0; i < this.pendingMetadata.length; i++) {
+          id3 = this.pendingMetadata[i];
+          id3.cueTime = clock.metadataTsToSeconds(id3.pts, timelineStartPts, this.keepOriginalTimestamps);
+          event.metadata.push(id3);
+        } // We add this to every single emitted segment even though we only need
+        // it for the first
+
+        event.metadata.dispatchType = this.metadataStream.dispatchType; // Reset stream state
+
+        this.pendingTracks.length = 0;
+        this.videoTrack = null;
+        this.pendingBoxes.length = 0;
+        this.pendingCaptions.length = 0;
+        this.pendingBytes = 0;
+        this.pendingMetadata.length = 0; // Emit the built segment
+        // We include captions and ID3 tags for backwards compatibility,
+        // ideally we should send only video and audio in the data event
+
+        this.trigger('data', event); // Emit each caption to the outside world
+        // Ideally, this would happen immediately on parsing captions,
+        // but we need to ensure that video data is sent back first
+        // so that caption timing can be adjusted to match video timing
+
+        for (i = 0; i < event.captions.length; i++) {
+          caption = event.captions[i];
+          this.trigger('caption', caption);
+        } // Emit each id3 tag to the outside world
+        // Ideally, this would happen immediately on parsing the tag,
+        // but we need to ensure that video data is sent back first
+        // so that ID3 frame timing can be adjusted to match video timing
+
+        for (i = 0; i < event.metadata.length; i++) {
+          id3 = event.metadata[i];
+          this.trigger('id3Frame', id3);
+        }
+      } // Only emit `done` if all tracks have been flushed and emitted
+
+      if (this.emittedTracks >= this.numberOfTracks) {
+        this.trigger('done');
+        this.emittedTracks = 0;
+      }
+    };
+    CoalesceStream.prototype.setRemux = function (val) {
+      this.remuxTracks = val;
+    };
+    /**
+     * A Stream that expects MP2T binary data as input and produces
+     * corresponding media segments, suitable for use with Media Source
+     * Extension (MSE) implementations that support the ISO BMFF byte
+     * stream format, like Chrome.
+     */
+
+    Transmuxer = function (options) {
+      var self = this,
+        hasFlushed = true,
+        videoTrack,
+        audioTrack;
+      Transmuxer.prototype.init.call(this);
+      options = options || {};
+      this.baseMediaDecodeTime = options.baseMediaDecodeTime || 0;
+      this.transmuxPipeline_ = {};
+      this.setupAacPipeline = function () {
+        var pipeline = {};
+        this.transmuxPipeline_ = pipeline;
+        pipeline.type = 'aac';
+        pipeline.metadataStream = new m2ts.MetadataStream(); // set up the parsing pipeline
+
+        pipeline.aacStream = new AacStream();
+        pipeline.audioTimestampRolloverStream = new m2ts.TimestampRolloverStream('audio');
+        pipeline.timedMetadataTimestampRolloverStream = new m2ts.TimestampRolloverStream('timed-metadata');
+        pipeline.adtsStream = new AdtsStream();
+        pipeline.coalesceStream = new CoalesceStream(options, pipeline.metadataStream);
+        pipeline.headOfPipeline = pipeline.aacStream;
+        pipeline.aacStream.pipe(pipeline.audioTimestampRolloverStream).pipe(pipeline.adtsStream);
+        pipeline.aacStream.pipe(pipeline.timedMetadataTimestampRolloverStream).pipe(pipeline.metadataStream).pipe(pipeline.coalesceStream);
+        pipeline.metadataStream.on('timestamp', function (frame) {
+          pipeline.aacStream.setTimestamp(frame.timeStamp);
+        });
+        pipeline.aacStream.on('data', function (data) {
+          if (data.type !== 'timed-metadata' && data.type !== 'audio' || pipeline.audioSegmentStream) {
+            return;
+          }
+          audioTrack = audioTrack || {
+            timelineStartInfo: {
+              baseMediaDecodeTime: self.baseMediaDecodeTime
+            },
+            codec: 'adts',
+            type: 'audio'
+          }; // hook up the audio segment stream to the first track with aac data
+
+          pipeline.coalesceStream.numberOfTracks++;
+          pipeline.audioSegmentStream = new AudioSegmentStream(audioTrack, options);
+          pipeline.audioSegmentStream.on('log', self.getLogTrigger_('audioSegmentStream'));
+          pipeline.audioSegmentStream.on('timingInfo', self.trigger.bind(self, 'audioTimingInfo')); // Set up the final part of the audio pipeline
+
+          pipeline.adtsStream.pipe(pipeline.audioSegmentStream).pipe(pipeline.coalesceStream); // emit pmt info
+
+          self.trigger('trackinfo', {
+            hasAudio: !!audioTrack,
+            hasVideo: !!videoTrack
+          });
+        }); // Re-emit any data coming from the coalesce stream to the outside world
+
+        pipeline.coalesceStream.on('data', this.trigger.bind(this, 'data')); // Let the consumer know we have finished flushing the entire pipeline
+
+        pipeline.coalesceStream.on('done', this.trigger.bind(this, 'done'));
+        addPipelineLogRetriggers(this, pipeline);
+      };
+      this.setupTsPipeline = function () {
+        var pipeline = {};
+        this.transmuxPipeline_ = pipeline;
+        pipeline.type = 'ts';
+        pipeline.metadataStream = new m2ts.MetadataStream(); // set up the parsing pipeline
+
+        pipeline.packetStream = new m2ts.TransportPacketStream();
+        pipeline.parseStream = new m2ts.TransportParseStream();
+        pipeline.elementaryStream = new m2ts.ElementaryStream();
+        pipeline.timestampRolloverStream = new m2ts.TimestampRolloverStream();
+        pipeline.adtsStream = new AdtsStream();
+        pipeline.h264Stream = new H264Stream();
+        pipeline.captionStream = new m2ts.CaptionStream(options);
+        pipeline.coalesceStream = new CoalesceStream(options, pipeline.metadataStream);
+        pipeline.headOfPipeline = pipeline.packetStream; // disassemble MPEG2-TS packets into elementary streams
+
+        pipeline.packetStream.pipe(pipeline.parseStream).pipe(pipeline.elementaryStream).pipe(pipeline.timestampRolloverStream); // !!THIS ORDER IS IMPORTANT!!
+        // demux the streams
+
+        pipeline.timestampRolloverStream.pipe(pipeline.h264Stream);
+        pipeline.timestampRolloverStream.pipe(pipeline.adtsStream);
+        pipeline.timestampRolloverStream.pipe(pipeline.metadataStream).pipe(pipeline.coalesceStream); // Hook up CEA-608/708 caption stream
+
+        pipeline.h264Stream.pipe(pipeline.captionStream).pipe(pipeline.coalesceStream);
+        pipeline.elementaryStream.on('data', function (data) {
+          var i;
+          if (data.type === 'metadata') {
+            i = data.tracks.length; // scan the tracks listed in the metadata
+
+            while (i--) {
+              if (!videoTrack && data.tracks[i].type === 'video') {
+                videoTrack = data.tracks[i];
+                videoTrack.timelineStartInfo.baseMediaDecodeTime = self.baseMediaDecodeTime;
+              } else if (!audioTrack && data.tracks[i].type === 'audio') {
+                audioTrack = data.tracks[i];
+                audioTrack.timelineStartInfo.baseMediaDecodeTime = self.baseMediaDecodeTime;
+              }
+            } // hook up the video segment stream to the first track with h264 data
+
+            if (videoTrack && !pipeline.videoSegmentStream) {
+              pipeline.coalesceStream.numberOfTracks++;
+              pipeline.videoSegmentStream = new VideoSegmentStream(videoTrack, options);
+              pipeline.videoSegmentStream.on('log', self.getLogTrigger_('videoSegmentStream'));
+              pipeline.videoSegmentStream.on('timelineStartInfo', function (timelineStartInfo) {
+                // When video emits timelineStartInfo data after a flush, we forward that
+                // info to the AudioSegmentStream, if it exists, because video timeline
+                // data takes precedence.  Do not do this if keepOriginalTimestamps is set,
+                // because this is a particularly subtle form of timestamp alteration.
+                if (audioTrack && !options.keepOriginalTimestamps) {
+                  audioTrack.timelineStartInfo = timelineStartInfo; // On the first segment we trim AAC frames that exist before the
+                  // very earliest DTS we have seen in video because Chrome will
+                  // interpret any video track with a baseMediaDecodeTime that is
+                  // non-zero as a gap.
+
+                  pipeline.audioSegmentStream.setEarliestDts(timelineStartInfo.dts - self.baseMediaDecodeTime);
+                }
+              });
+              pipeline.videoSegmentStream.on('processedGopsInfo', self.trigger.bind(self, 'gopInfo'));
+              pipeline.videoSegmentStream.on('segmentTimingInfo', self.trigger.bind(self, 'videoSegmentTimingInfo'));
+              pipeline.videoSegmentStream.on('baseMediaDecodeTime', function (baseMediaDecodeTime) {
+                if (audioTrack) {
+                  pipeline.audioSegmentStream.setVideoBaseMediaDecodeTime(baseMediaDecodeTime);
+                }
+              });
+              pipeline.videoSegmentStream.on('timingInfo', self.trigger.bind(self, 'videoTimingInfo')); // Set up the final part of the video pipeline
+
+              pipeline.h264Stream.pipe(pipeline.videoSegmentStream).pipe(pipeline.coalesceStream);
+            }
+            if (audioTrack && !pipeline.audioSegmentStream) {
+              // hook up the audio segment stream to the first track with aac data
+              pipeline.coalesceStream.numberOfTracks++;
+              pipeline.audioSegmentStream = new AudioSegmentStream(audioTrack, options);
+              pipeline.audioSegmentStream.on('log', self.getLogTrigger_('audioSegmentStream'));
+              pipeline.audioSegmentStream.on('timingInfo', self.trigger.bind(self, 'audioTimingInfo'));
+              pipeline.audioSegmentStream.on('segmentTimingInfo', self.trigger.bind(self, 'audioSegmentTimingInfo')); // Set up the final part of the audio pipeline
+
+              pipeline.adtsStream.pipe(pipeline.audioSegmentStream).pipe(pipeline.coalesceStream);
+            } // emit pmt info
+
+            self.trigger('trackinfo', {
+              hasAudio: !!audioTrack,
+              hasVideo: !!videoTrack
+            });
+          }
+        }); // Re-emit any data coming from the coalesce stream to the outside world
+
+        pipeline.coalesceStream.on('data', this.trigger.bind(this, 'data'));
+        pipeline.coalesceStream.on('id3Frame', function (id3Frame) {
+          id3Frame.dispatchType = pipeline.metadataStream.dispatchType;
+          self.trigger('id3Frame', id3Frame);
+        });
+        pipeline.coalesceStream.on('caption', this.trigger.bind(this, 'caption')); // Let the consumer know we have finished flushing the entire pipeline
+
+        pipeline.coalesceStream.on('done', this.trigger.bind(this, 'done'));
+        addPipelineLogRetriggers(this, pipeline);
+      }; // hook up the segment streams once track metadata is delivered
+
+      this.setBaseMediaDecodeTime = function (baseMediaDecodeTime) {
+        var pipeline = this.transmuxPipeline_;
+        if (!options.keepOriginalTimestamps) {
+          this.baseMediaDecodeTime = baseMediaDecodeTime;
+        }
+        if (audioTrack) {
+          audioTrack.timelineStartInfo.dts = undefined;
+          audioTrack.timelineStartInfo.pts = undefined;
+          trackDecodeInfo.clearDtsInfo(audioTrack);
+          if (pipeline.audioTimestampRolloverStream) {
+            pipeline.audioTimestampRolloverStream.discontinuity();
+          }
+        }
+        if (videoTrack) {
+          if (pipeline.videoSegmentStream) {
+            pipeline.videoSegmentStream.gopCache_ = [];
+          }
+          videoTrack.timelineStartInfo.dts = undefined;
+          videoTrack.timelineStartInfo.pts = undefined;
+          trackDecodeInfo.clearDtsInfo(videoTrack);
+          pipeline.captionStream.reset();
+        }
+        if (pipeline.timestampRolloverStream) {
+          pipeline.timestampRolloverStream.discontinuity();
+        }
+      };
+      this.setAudioAppendStart = function (timestamp) {
+        if (audioTrack) {
+          this.transmuxPipeline_.audioSegmentStream.setAudioAppendStart(timestamp);
+        }
+      };
+      this.setRemux = function (val) {
+        var pipeline = this.transmuxPipeline_;
+        options.remux = val;
+        if (pipeline && pipeline.coalesceStream) {
+          pipeline.coalesceStream.setRemux(val);
+        }
+      };
+      this.alignGopsWith = function (gopsToAlignWith) {
+        if (videoTrack && this.transmuxPipeline_.videoSegmentStream) {
+          this.transmuxPipeline_.videoSegmentStream.alignGopsWith(gopsToAlignWith);
+        }
+      };
+      this.getLogTrigger_ = function (key) {
+        var self = this;
+        return function (event) {
+          event.stream = key;
+          self.trigger('log', event);
+        };
+      }; // feed incoming data to the front of the parsing pipeline
+
+      this.push = function (data) {
+        if (hasFlushed) {
+          var isAac = isLikelyAacData(data);
+          if (isAac && this.transmuxPipeline_.type !== 'aac') {
+            this.setupAacPipeline();
+          } else if (!isAac && this.transmuxPipeline_.type !== 'ts') {
+            this.setupTsPipeline();
+          }
+          hasFlushed = false;
+        }
+        this.transmuxPipeline_.headOfPipeline.push(data);
+      }; // flush any buffered data
+
+      this.flush = function () {
+        hasFlushed = true; // Start at the top of the pipeline and flush all pending work
+
+        this.transmuxPipeline_.headOfPipeline.flush();
+      };
+      this.endTimeline = function () {
+        this.transmuxPipeline_.headOfPipeline.endTimeline();
+      };
+      this.reset = function () {
+        if (this.transmuxPipeline_.headOfPipeline) {
+          this.transmuxPipeline_.headOfPipeline.reset();
+        }
+      }; // Caption data has to be reset when seeking outside buffered range
+
+      this.resetCaptions = function () {
+        if (this.transmuxPipeline_.captionStream) {
+          this.transmuxPipeline_.captionStream.reset();
+        }
+      };
+    };
+    Transmuxer.prototype = new Stream();
+    var transmuxer = {
+      Transmuxer: Transmuxer,
+      VideoSegmentStream: VideoSegmentStream,
+      AudioSegmentStream: AudioSegmentStream,
+      AUDIO_PROPERTIES: AUDIO_PROPERTIES,
+      VIDEO_PROPERTIES: VIDEO_PROPERTIES,
+      // exported for testing
+      generateSegmentTimingInfo: generateSegmentTimingInfo
+    };
+    /**
+     * mux.js
+     *
+     * Copyright (c) Brightcove
+     * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE
+     */
+
+    var toUnsigned$3 = function (value) {
+      return value >>> 0;
+    };
+    var toHexString$1 = function (value) {
+      return ('00' + value.toString(16)).slice(-2);
+    };
+    var bin = {
+      toUnsigned: toUnsigned$3,
+      toHexString: toHexString$1
+    };
+    var parseType$3 = function (buffer) {
+      var result = '';
+      result += String.fromCharCode(buffer[0]);
+      result += String.fromCharCode(buffer[1]);
+      result += String.fromCharCode(buffer[2]);
+      result += String.fromCharCode(buffer[3]);
+      return result;
+    };
+    var parseType_1 = parseType$3;
+    var toUnsigned$2 = bin.toUnsigned;
+    var parseType$2 = parseType_1;
+    var findBox$2 = function (data, path) {
+      var results = [],
+        i,
+        size,
+        type,
+        end,
+        subresults;
+      if (!path.length) {
+        // short-circuit the search for empty paths
+        return null;
+      }
+      for (i = 0; i < data.byteLength;) {
+        size = toUnsigned$2(data[i] << 24 | data[i + 1] << 16 | data[i + 2] << 8 | data[i + 3]);
+        type = parseType$2(data.subarray(i + 4, i + 8));
+        end = size > 1 ? i + size : data.byteLength;
+        if (type === path[0]) {
+          if (path.length === 1) {
+            // this is the end of the path and we've found the box we were
+            // looking for
+            results.push(data.subarray(i + 8, end));
+          } else {
+            // recursively search for the next box along the path
+            subresults = findBox$2(data.subarray(i + 8, end), path.slice(1));
+            if (subresults.length) {
+              results = results.concat(subresults);
+            }
+          }
+        }
+        i = end;
+      } // we've finished searching all of data
+
+      return results;
+    };
+    var findBox_1 = findBox$2;
+    var toUnsigned$1 = bin.toUnsigned;
+    var getUint64$2 = numbers.getUint64;
+    var tfdt = function (data) {
+      var result = {
+        version: data[0],
+        flags: new Uint8Array(data.subarray(1, 4))
+      };
+      if (result.version === 1) {
+        result.baseMediaDecodeTime = getUint64$2(data.subarray(4));
+      } else {
+        result.baseMediaDecodeTime = toUnsigned$1(data[4] << 24 | data[5] << 16 | data[6] << 8 | data[7]);
+      }
+      return result;
+    };
+    var parseTfdt$2 = tfdt;
+    var parseSampleFlags$1 = function (flags) {
+      return {
+        isLeading: (flags[0] & 0x0c) >>> 2,
+        dependsOn: flags[0] & 0x03,
+        isDependedOn: (flags[1] & 0xc0) >>> 6,
+        hasRedundancy: (flags[1] & 0x30) >>> 4,
+        paddingValue: (flags[1] & 0x0e) >>> 1,
+        isNonSyncSample: flags[1] & 0x01,
+        degradationPriority: flags[2] << 8 | flags[3]
+      };
+    };
+    var parseSampleFlags_1 = parseSampleFlags$1;
+    var parseSampleFlags = parseSampleFlags_1;
+    var trun = function (data) {
+      var result = {
+          version: data[0],
+          flags: new Uint8Array(data.subarray(1, 4)),
+          samples: []
+        },
+        view = new DataView(data.buffer, data.byteOffset, data.byteLength),
+        // Flag interpretation
+        dataOffsetPresent = result.flags[2] & 0x01,
+        // compare with 2nd byte of 0x1
+        firstSampleFlagsPresent = result.flags[2] & 0x04,
+        // compare with 2nd byte of 0x4
+        sampleDurationPresent = result.flags[1] & 0x01,
+        // compare with 2nd byte of 0x100
+        sampleSizePresent = result.flags[1] & 0x02,
+        // compare with 2nd byte of 0x200
+        sampleFlagsPresent = result.flags[1] & 0x04,
+        // compare with 2nd byte of 0x400
+        sampleCompositionTimeOffsetPresent = result.flags[1] & 0x08,
+        // compare with 2nd byte of 0x800
+        sampleCount = view.getUint32(4),
+        offset = 8,
+        sample;
+      if (dataOffsetPresent) {
+        // 32 bit signed integer
+        result.dataOffset = view.getInt32(offset);
+        offset += 4;
+      } // Overrides the flags for the first sample only. The order of
+      // optional values will be: duration, size, compositionTimeOffset
+
+      if (firstSampleFlagsPresent && sampleCount) {
+        sample = {
+          flags: parseSampleFlags(data.subarray(offset, offset + 4))
+        };
+        offset += 4;
+        if (sampleDurationPresent) {
+          sample.duration = view.getUint32(offset);
+          offset += 4;
+        }
+        if (sampleSizePresent) {
+          sample.size = view.getUint32(offset);
+          offset += 4;
+        }
+        if (sampleCompositionTimeOffsetPresent) {
+          if (result.version === 1) {
+            sample.compositionTimeOffset = view.getInt32(offset);
+          } else {
+            sample.compositionTimeOffset = view.getUint32(offset);
+          }
+          offset += 4;
+        }
+        result.samples.push(sample);
+        sampleCount--;
+      }
+      while (sampleCount--) {
+        sample = {};
+        if (sampleDurationPresent) {
+          sample.duration = view.getUint32(offset);
+          offset += 4;
+        }
+        if (sampleSizePresent) {
+          sample.size = view.getUint32(offset);
+          offset += 4;
+        }
+        if (sampleFlagsPresent) {
+          sample.flags = parseSampleFlags(data.subarray(offset, offset + 4));
+          offset += 4;
+        }
+        if (sampleCompositionTimeOffsetPresent) {
+          if (result.version === 1) {
+            sample.compositionTimeOffset = view.getInt32(offset);
+          } else {
+            sample.compositionTimeOffset = view.getUint32(offset);
+          }
+          offset += 4;
+        }
+        result.samples.push(sample);
+      }
+      return result;
+    };
+    var parseTrun$2 = trun;
+    var tfhd = function (data) {
+      var view = new DataView(data.buffer, data.byteOffset, data.byteLength),
+        result = {
+          version: data[0],
+          flags: new Uint8Array(data.subarray(1, 4)),
+          trackId: view.getUint32(4)
+        },
+        baseDataOffsetPresent = result.flags[2] & 0x01,
+        sampleDescriptionIndexPresent = result.flags[2] & 0x02,
+        defaultSampleDurationPresent = result.flags[2] & 0x08,
+        defaultSampleSizePresent = result.flags[2] & 0x10,
+        defaultSampleFlagsPresent = result.flags[2] & 0x20,
+        durationIsEmpty = result.flags[0] & 0x010000,
+        defaultBaseIsMoof = result.flags[0] & 0x020000,
+        i;
+      i = 8;
+      if (baseDataOffsetPresent) {
+        i += 4; // truncate top 4 bytes
+        // FIXME: should we read the full 64 bits?
+
+        result.baseDataOffset = view.getUint32(12);
+        i += 4;
+      }
+      if (sampleDescriptionIndexPresent) {
+        result.sampleDescriptionIndex = view.getUint32(i);
+        i += 4;
+      }
+      if (defaultSampleDurationPresent) {
+        result.defaultSampleDuration = view.getUint32(i);
+        i += 4;
+      }
+      if (defaultSampleSizePresent) {
+        result.defaultSampleSize = view.getUint32(i);
+        i += 4;
+      }
+      if (defaultSampleFlagsPresent) {
+        result.defaultSampleFlags = view.getUint32(i);
+      }
+      if (durationIsEmpty) {
+        result.durationIsEmpty = true;
+      }
+      if (!baseDataOffsetPresent && defaultBaseIsMoof) {
+        result.baseDataOffsetIsMoof = true;
+      }
+      return result;
+    };
+    var parseTfhd$2 = tfhd;
+    var win;
+    if (typeof window !== "undefined") {
+      win = window;
+    } else if (typeof commonjsGlobal !== "undefined") {
+      win = commonjsGlobal;
+    } else if (typeof self !== "undefined") {
+      win = self;
+    } else {
+      win = {};
+    }
+    var window_1 = win;
+    /**
+     * mux.js
+     *
+     * Copyright (c) Brightcove
+     * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE
+     *
+     * Reads in-band CEA-708 captions out of FMP4 segments.
+     * @see https://en.wikipedia.org/wiki/CEA-708
+     */
+
+    var discardEmulationPreventionBytes = captionPacketParser.discardEmulationPreventionBytes;
+    var CaptionStream = captionStream.CaptionStream;
+    var findBox$1 = findBox_1;
+    var parseTfdt$1 = parseTfdt$2;
+    var parseTrun$1 = parseTrun$2;
+    var parseTfhd$1 = parseTfhd$2;
+    var window$2 = window_1;
+    /**
+      * Maps an offset in the mdat to a sample based on the the size of the samples.
+      * Assumes that `parseSamples` has been called first.
+      *
+      * @param {Number} offset - The offset into the mdat
+      * @param {Object[]} samples - An array of samples, parsed using `parseSamples`
+      * @return {?Object} The matching sample, or null if no match was found.
+      *
+      * @see ISO-BMFF-12/2015, Section 8.8.8
+     **/
+
+    var mapToSample = function (offset, samples) {
+      var approximateOffset = offset;
+      for (var i = 0; i < samples.length; i++) {
+        var sample = samples[i];
+        if (approximateOffset < sample.size) {
+          return sample;
+        }
+        approximateOffset -= sample.size;
+      }
+      return null;
+    };
+    /**
+      * Finds SEI nal units contained in a Media Data Box.
+      * Assumes that `parseSamples` has been called first.
+      *
+      * @param {Uint8Array} avcStream - The bytes of the mdat
+      * @param {Object[]} samples - The samples parsed out by `parseSamples`
+      * @param {Number} trackId - The trackId of this video track
+      * @return {Object[]} seiNals - the parsed SEI NALUs found.
+      *   The contents of the seiNal should match what is expected by
+      *   CaptionStream.push (nalUnitType, size, data, escapedRBSP, pts, dts)
+      *
+      * @see ISO-BMFF-12/2015, Section 8.1.1
+      * @see Rec. ITU-T H.264, 7.3.2.3.1
+     **/
+
+    var findSeiNals = function (avcStream, samples, trackId) {
+      var avcView = new DataView(avcStream.buffer, avcStream.byteOffset, avcStream.byteLength),
+        result = {
+          logs: [],
+          seiNals: []
+        },
+        seiNal,
+        i,
+        length,
+        lastMatchedSample;
+      for (i = 0; i + 4 < avcStream.length; i += length) {
+        length = avcView.getUint32(i);
+        i += 4; // Bail if this doesn't appear to be an H264 stream
+
+        if (length <= 0) {
+          continue;
+        }
+        switch (avcStream[i] & 0x1F) {
+          case 0x06:
+            var data = avcStream.subarray(i + 1, i + 1 + length);
+            var matchingSample = mapToSample(i, samples);
+            seiNal = {
+              nalUnitType: 'sei_rbsp',
+              size: length,
+              data: data,
+              escapedRBSP: discardEmulationPreventionBytes(data),
+              trackId: trackId
+            };
+            if (matchingSample) {
+              seiNal.pts = matchingSample.pts;
+              seiNal.dts = matchingSample.dts;
+              lastMatchedSample = matchingSample;
+            } else if (lastMatchedSample) {
+              // If a matching sample cannot be found, use the last
+              // sample's values as they should be as close as possible
+              seiNal.pts = lastMatchedSample.pts;
+              seiNal.dts = lastMatchedSample.dts;
+            } else {
+              result.logs.push({
+                level: 'warn',
+                message: 'We\'ve encountered a nal unit without data at ' + i + ' for trackId ' + trackId + '. See mux.js#223.'
+              });
+              break;
+            }
+            result.seiNals.push(seiNal);
+            break;
+        }
+      }
+      return result;
+    };
+    /**
+      * Parses sample information out of Track Run Boxes and calculates
+      * the absolute presentation and decode timestamps of each sample.
+      *
+      * @param {Array<Uint8Array>} truns - The Trun Run boxes to be parsed
+      * @param {Number|BigInt} baseMediaDecodeTime - base media decode time from tfdt
+          @see ISO-BMFF-12/2015, Section 8.8.12
+      * @param {Object} tfhd - The parsed Track Fragment Header
+      *   @see inspect.parseTfhd
+      * @return {Object[]} the parsed samples
+      *
+      * @see ISO-BMFF-12/2015, Section 8.8.8
+     **/
+
+    var parseSamples = function (truns, baseMediaDecodeTime, tfhd) {
+      var currentDts = baseMediaDecodeTime;
+      var defaultSampleDuration = tfhd.defaultSampleDuration || 0;
+      var defaultSampleSize = tfhd.defaultSampleSize || 0;
+      var trackId = tfhd.trackId;
+      var allSamples = [];
+      truns.forEach(function (trun) {
+        // Note: We currently do not parse the sample table as well
+        // as the trun. It's possible some sources will require this.
+        // moov > trak > mdia > minf > stbl
+        var trackRun = parseTrun$1(trun);
+        var samples = trackRun.samples;
+        samples.forEach(function (sample) {
+          if (sample.duration === undefined) {
+            sample.duration = defaultSampleDuration;
+          }
+          if (sample.size === undefined) {
+            sample.size = defaultSampleSize;
+          }
+          sample.trackId = trackId;
+          sample.dts = currentDts;
+          if (sample.compositionTimeOffset === undefined) {
+            sample.compositionTimeOffset = 0;
+          }
+          if (typeof currentDts === 'bigint') {
+            sample.pts = currentDts + window$2.BigInt(sample.compositionTimeOffset);
+            currentDts += window$2.BigInt(sample.duration);
+          } else {
+            sample.pts = currentDts + sample.compositionTimeOffset;
+            currentDts += sample.duration;
+          }
+        });
+        allSamples = allSamples.concat(samples);
+      });
+      return allSamples;
+    };
+    /**
+      * Parses out caption nals from an FMP4 segment's video tracks.
+      *
+      * @param {Uint8Array} segment - The bytes of a single segment
+      * @param {Number} videoTrackId - The trackId of a video track in the segment
+      * @return {Object.<Number, Object[]>} A mapping of video trackId to
+      *   a list of seiNals found in that track
+     **/
+
+    var parseCaptionNals = function (segment, videoTrackId) {
+      // To get the samples
+      var trafs = findBox$1(segment, ['moof', 'traf']); // To get SEI NAL units
+
+      var mdats = findBox$1(segment, ['mdat']);
+      var captionNals = {};
+      var mdatTrafPairs = []; // Pair up each traf with a mdat as moofs and mdats are in pairs
+
+      mdats.forEach(function (mdat, index) {
+        var matchingTraf = trafs[index];
+        mdatTrafPairs.push({
+          mdat: mdat,
+          traf: matchingTraf
+        });
+      });
+      mdatTrafPairs.forEach(function (pair) {
+        var mdat = pair.mdat;
+        var traf = pair.traf;
+        var tfhd = findBox$1(traf, ['tfhd']); // Exactly 1 tfhd per traf
+
+        var headerInfo = parseTfhd$1(tfhd[0]);
+        var trackId = headerInfo.trackId;
+        var tfdt = findBox$1(traf, ['tfdt']); // Either 0 or 1 tfdt per traf
+
+        var baseMediaDecodeTime = tfdt.length > 0 ? parseTfdt$1(tfdt[0]).baseMediaDecodeTime : 0;
+        var truns = findBox$1(traf, ['trun']);
+        var samples;
+        var result; // Only parse video data for the chosen video track
+
+        if (videoTrackId === trackId && truns.length > 0) {
+          samples = parseSamples(truns, baseMediaDecodeTime, headerInfo);
+          result = findSeiNals(mdat, samples, trackId);
+          if (!captionNals[trackId]) {
+            captionNals[trackId] = {
+              seiNals: [],
+              logs: []
+            };
+          }
+          captionNals[trackId].seiNals = captionNals[trackId].seiNals.concat(result.seiNals);
+          captionNals[trackId].logs = captionNals[trackId].logs.concat(result.logs);
+        }
+      });
+      return captionNals;
+    };
+    /**
+      * Parses out inband captions from an MP4 container and returns
+      * caption objects that can be used by WebVTT and the TextTrack API.
+      * @see https://developer.mozilla.org/en-US/docs/Web/API/VTTCue
+      * @see https://developer.mozilla.org/en-US/docs/Web/API/TextTrack
+      * Assumes that `probe.getVideoTrackIds` and `probe.timescale` have been called first
+      *
+      * @param {Uint8Array} segment - The fmp4 segment containing embedded captions
+      * @param {Number} trackId - The id of the video track to parse
+      * @param {Number} timescale - The timescale for the video track from the init segment
+      *
+      * @return {?Object[]} parsedCaptions - A list of captions or null if no video tracks
+      * @return {Number} parsedCaptions[].startTime - The time to show the caption in seconds
+      * @return {Number} parsedCaptions[].endTime - The time to stop showing the caption in seconds
+      * @return {Object[]} parsedCaptions[].content - A list of individual caption segments
+      * @return {String} parsedCaptions[].content.text - The visible content of the caption segment
+      * @return {Number} parsedCaptions[].content.line - The line height from 1-15 for positioning of the caption segment
+      * @return {Number} parsedCaptions[].content.position - The column indent percentage for cue positioning from 10-80
+     **/
+
+    var parseEmbeddedCaptions = function (segment, trackId, timescale) {
+      var captionNals; // the ISO-BMFF spec says that trackId can't be zero, but there's some broken content out there
+
+      if (trackId === null) {
+        return null;
+      }
+      captionNals = parseCaptionNals(segment, trackId);
+      var trackNals = captionNals[trackId] || {};
+      return {
+        seiNals: trackNals.seiNals,
+        logs: trackNals.logs,
+        timescale: timescale
+      };
+    };
+    /**
+      * Converts SEI NALUs into captions that can be used by video.js
+     **/
+
+    var CaptionParser = function () {
+      var isInitialized = false;
+      var captionStream; // Stores segments seen before trackId and timescale are set
+
+      var segmentCache; // Stores video track ID of the track being parsed
+
+      var trackId; // Stores the timescale of the track being parsed
+
+      var timescale; // Stores captions parsed so far
+
+      var parsedCaptions; // Stores whether we are receiving partial data or not
+
+      var parsingPartial;
+      /**
+        * A method to indicate whether a CaptionParser has been initalized
+        * @returns {Boolean}
+       **/
+
+      this.isInitialized = function () {
+        return isInitialized;
+      };
+      /**
+        * Initializes the underlying CaptionStream, SEI NAL parsing
+        * and management, and caption collection
+       **/
+
+      this.init = function (options) {
+        captionStream = new CaptionStream();
+        isInitialized = true;
+        parsingPartial = options ? options.isPartial : false; // Collect dispatched captions
+
+        captionStream.on('data', function (event) {
+          // Convert to seconds in the source's timescale
+          event.startTime = event.startPts / timescale;
+          event.endTime = event.endPts / timescale;
+          parsedCaptions.captions.push(event);
+          parsedCaptions.captionStreams[event.stream] = true;
+        });
+        captionStream.on('log', function (log) {
+          parsedCaptions.logs.push(log);
+        });
+      };
+      /**
+        * Determines if a new video track will be selected
+        * or if the timescale changed
+        * @return {Boolean}
+       **/
+
+      this.isNewInit = function (videoTrackIds, timescales) {
+        if (videoTrackIds && videoTrackIds.length === 0 || timescales && typeof timescales === 'object' && Object.keys(timescales).length === 0) {
+          return false;
+        }
+        return trackId !== videoTrackIds[0] || timescale !== timescales[trackId];
+      };
+      /**
+        * Parses out SEI captions and interacts with underlying
+        * CaptionStream to return dispatched captions
+        *
+        * @param {Uint8Array} segment - The fmp4 segment containing embedded captions
+        * @param {Number[]} videoTrackIds - A list of video tracks found in the init segment
+        * @param {Object.<Number, Number>} timescales - The timescales found in the init segment
+        * @see parseEmbeddedCaptions
+        * @see m2ts/caption-stream.js
+       **/
+
+      this.parse = function (segment, videoTrackIds, timescales) {
+        var parsedData;
+        if (!this.isInitialized()) {
+          return null; // This is not likely to be a video segment
+        } else if (!videoTrackIds || !timescales) {
+          return null;
+        } else if (this.isNewInit(videoTrackIds, timescales)) {
+          // Use the first video track only as there is no
+          // mechanism to switch to other video tracks
+          trackId = videoTrackIds[0];
+          timescale = timescales[trackId]; // If an init segment has not been seen yet, hold onto segment
+          // data until we have one.
+          // the ISO-BMFF spec says that trackId can't be zero, but there's some broken content out there
+        } else if (trackId === null || !timescale) {
+          segmentCache.push(segment);
+          return null;
+        } // Now that a timescale and trackId is set, parse cached segments
+
+        while (segmentCache.length > 0) {
+          var cachedSegment = segmentCache.shift();
+          this.parse(cachedSegment, videoTrackIds, timescales);
+        }
+        parsedData = parseEmbeddedCaptions(segment, trackId, timescale);
+        if (parsedData && parsedData.logs) {
+          parsedCaptions.logs = parsedCaptions.logs.concat(parsedData.logs);
+        }
+        if (parsedData === null || !parsedData.seiNals) {
+          if (parsedCaptions.logs.length) {
+            return {
+              logs: parsedCaptions.logs,
+              captions: [],
+              captionStreams: []
+            };
+          }
+          return null;
+        }
+        this.pushNals(parsedData.seiNals); // Force the parsed captions to be dispatched
+
+        this.flushStream();
+        return parsedCaptions;
+      };
+      /**
+        * Pushes SEI NALUs onto CaptionStream
+        * @param {Object[]} nals - A list of SEI nals parsed using `parseCaptionNals`
+        * Assumes that `parseCaptionNals` has been called first
+        * @see m2ts/caption-stream.js
+        **/
+
+      this.pushNals = function (nals) {
+        if (!this.isInitialized() || !nals || nals.length === 0) {
+          return null;
+        }
+        nals.forEach(function (nal) {
+          captionStream.push(nal);
+        });
+      };
+      /**
+        * Flushes underlying CaptionStream to dispatch processed, displayable captions
+        * @see m2ts/caption-stream.js
+       **/
+
+      this.flushStream = function () {
+        if (!this.isInitialized()) {
+          return null;
+        }
+        if (!parsingPartial) {
+          captionStream.flush();
+        } else {
+          captionStream.partialFlush();
+        }
+      };
+      /**
+        * Reset caption buckets for new data
+       **/
+
+      this.clearParsedCaptions = function () {
+        parsedCaptions.captions = [];
+        parsedCaptions.captionStreams = {};
+        parsedCaptions.logs = [];
+      };
+      /**
+        * Resets underlying CaptionStream
+        * @see m2ts/caption-stream.js
+       **/
+
+      this.resetCaptionStream = function () {
+        if (!this.isInitialized()) {
+          return null;
+        }
+        captionStream.reset();
+      };
+      /**
+        * Convenience method to clear all captions flushed from the
+        * CaptionStream and still being parsed
+        * @see m2ts/caption-stream.js
+       **/
+
+      this.clearAllCaptions = function () {
+        this.clearParsedCaptions();
+        this.resetCaptionStream();
+      };
+      /**
+        * Reset caption parser
+       **/
+
+      this.reset = function () {
+        segmentCache = [];
+        trackId = null;
+        timescale = null;
+        if (!parsedCaptions) {
+          parsedCaptions = {
+            captions: [],
+            // CC1, CC2, CC3, CC4
+            captionStreams: {},
+            logs: []
+          };
+        } else {
+          this.clearParsedCaptions();
+        }
+        this.resetCaptionStream();
+      };
+      this.reset();
+    };
+    var captionParser = CaptionParser;
+    /**
+     * Returns the first string in the data array ending with a null char '\0'
+     * @param {UInt8} data 
+     * @returns the string with the null char
+     */
+
+    var uint8ToCString$1 = function (data) {
+      var index = 0;
+      var curChar = String.fromCharCode(data[index]);
+      var retString = '';
+      while (curChar !== '\0') {
+        retString += curChar;
+        index++;
+        curChar = String.fromCharCode(data[index]);
+      } // Add nullChar
+
+      retString += curChar;
+      return retString;
+    };
+    var string = {
+      uint8ToCString: uint8ToCString$1
+    };
+    var uint8ToCString = string.uint8ToCString;
+    var getUint64$1 = numbers.getUint64;
+    /**
+     * Based on: ISO/IEC 23009 Section: 5.10.3.3
+     * References:
+     * https://dashif-documents.azurewebsites.net/Events/master/event.html#emsg-format
+     * https://aomediacodec.github.io/id3-emsg/
+     * 
+     * Takes emsg box data as a uint8 array and returns a emsg box object
+     * @param {UInt8Array} boxData data from emsg box
+     * @returns A parsed emsg box object
+     */
+
+    var parseEmsgBox = function (boxData) {
+      // version + flags
+      var offset = 4;
+      var version = boxData[0];
+      var scheme_id_uri, value, timescale, presentation_time, presentation_time_delta, event_duration, id, message_data;
+      if (version === 0) {
+        scheme_id_uri = uint8ToCString(boxData.subarray(offset));
+        offset += scheme_id_uri.length;
+        value = uint8ToCString(boxData.subarray(offset));
+        offset += value.length;
+        var dv = new DataView(boxData.buffer);
+        timescale = dv.getUint32(offset);
+        offset += 4;
+        presentation_time_delta = dv.getUint32(offset);
+        offset += 4;
+        event_duration = dv.getUint32(offset);
+        offset += 4;
+        id = dv.getUint32(offset);
+        offset += 4;
+      } else if (version === 1) {
+        var dv = new DataView(boxData.buffer);
+        timescale = dv.getUint32(offset);
+        offset += 4;
+        presentation_time = getUint64$1(boxData.subarray(offset));
+        offset += 8;
+        event_duration = dv.getUint32(offset);
+        offset += 4;
+        id = dv.getUint32(offset);
+        offset += 4;
+        scheme_id_uri = uint8ToCString(boxData.subarray(offset));
+        offset += scheme_id_uri.length;
+        value = uint8ToCString(boxData.subarray(offset));
+        offset += value.length;
+      }
+      message_data = new Uint8Array(boxData.subarray(offset, boxData.byteLength));
+      var emsgBox = {
+        scheme_id_uri,
+        value,
+        // if timescale is undefined or 0 set to 1 
+        timescale: timescale ? timescale : 1,
+        presentation_time,
+        presentation_time_delta,
+        event_duration,
+        id,
+        message_data
+      };
+      return isValidEmsgBox(version, emsgBox) ? emsgBox : undefined;
+    };
+    /**
+     * Scales a presentation time or time delta with an offset with a provided timescale
+     * @param {number} presentationTime 
+     * @param {number} timescale 
+     * @param {number} timeDelta 
+     * @param {number} offset 
+     * @returns the scaled time as a number
+     */
+
+    var scaleTime = function (presentationTime, timescale, timeDelta, offset) {
+      return presentationTime || presentationTime === 0 ? presentationTime / timescale : offset + timeDelta / timescale;
+    };
+    /**
+     * Checks the emsg box data for validity based on the version
+     * @param {number} version of the emsg box to validate
+     * @param {Object} emsg the emsg data to validate
+     * @returns if the box is valid as a boolean
+     */
+
+    var isValidEmsgBox = function (version, emsg) {
+      var hasScheme = emsg.scheme_id_uri !== '\0';
+      var isValidV0Box = version === 0 && isDefined(emsg.presentation_time_delta) && hasScheme;
+      var isValidV1Box = version === 1 && isDefined(emsg.presentation_time) && hasScheme; // Only valid versions of emsg are 0 and 1
+
+      return !(version > 1) && isValidV0Box || isValidV1Box;
+    }; // Utility function to check if an object is defined
+
+    var isDefined = function (data) {
+      return data !== undefined || data !== null;
+    };
+    var emsg$1 = {
+      parseEmsgBox: parseEmsgBox,
+      scaleTime: scaleTime
+    };
+    /**
+     * mux.js
+     *
+     * Copyright (c) Brightcove
+     * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE
+     *
+     * Utilities to detect basic properties and metadata about MP4s.
+     */
+
+    var toUnsigned = bin.toUnsigned;
+    var toHexString = bin.toHexString;
+    var findBox = findBox_1;
+    var parseType$1 = parseType_1;
+    var emsg = emsg$1;
+    var parseTfhd = parseTfhd$2;
+    var parseTrun = parseTrun$2;
+    var parseTfdt = parseTfdt$2;
+    var getUint64 = numbers.getUint64;
+    var timescale, startTime, compositionStartTime, getVideoTrackIds, getTracks, getTimescaleFromMediaHeader, getEmsgID3;
+    var window$1 = window_1;
+    var parseId3Frames = parseId3.parseId3Frames;
+    /**
+     * Parses an MP4 initialization segment and extracts the timescale
+     * values for any declared tracks. Timescale values indicate the
+     * number of clock ticks per second to assume for time-based values
+     * elsewhere in the MP4.
+     *
+     * To determine the start time of an MP4, you need two pieces of
+     * information: the timescale unit and the earliest base media decode
+     * time. Multiple timescales can be specified within an MP4 but the
+     * base media decode time is always expressed in the timescale from
+     * the media header box for the track:
+     * ```
+     * moov > trak > mdia > mdhd.timescale
+     * ```
+     * @param init {Uint8Array} the bytes of the init segment
+     * @return {object} a hash of track ids to timescale values or null if
+     * the init segment is malformed.
+     */
+
+    timescale = function (init) {
+      var result = {},
+        traks = findBox(init, ['moov', 'trak']); // mdhd timescale
+
+      return traks.reduce(function (result, trak) {
+        var tkhd, version, index, id, mdhd;
+        tkhd = findBox(trak, ['tkhd'])[0];
+        if (!tkhd) {
+          return null;
+        }
+        version = tkhd[0];
+        index = version === 0 ? 12 : 20;
+        id = toUnsigned(tkhd[index] << 24 | tkhd[index + 1] << 16 | tkhd[index + 2] << 8 | tkhd[index + 3]);
+        mdhd = findBox(trak, ['mdia', 'mdhd'])[0];
+        if (!mdhd) {
+          return null;
+        }
+        version = mdhd[0];
+        index = version === 0 ? 12 : 20;
+        result[id] = toUnsigned(mdhd[index] << 24 | mdhd[index + 1] << 16 | mdhd[index + 2] << 8 | mdhd[index + 3]);
+        return result;
+      }, result);
+    };
+    /**
+     * Determine the base media decode start time, in seconds, for an MP4
+     * fragment. If multiple fragments are specified, the earliest time is
+     * returned.
+     *
+     * The base media decode time can be parsed from track fragment
+     * metadata:
+     * ```
+     * moof > traf > tfdt.baseMediaDecodeTime
+     * ```
+     * It requires the timescale value from the mdhd to interpret.
+     *
+     * @param timescale {object} a hash of track ids to timescale values.
+     * @return {number} the earliest base media decode start time for the
+     * fragment, in seconds
+     */
+
+    startTime = function (timescale, fragment) {
+      var trafs; // we need info from two childrend of each track fragment box
+
+      trafs = findBox(fragment, ['moof', 'traf']); // determine the start times for each track
+
+      var lowestTime = trafs.reduce(function (acc, traf) {
+        var tfhd = findBox(traf, ['tfhd'])[0]; // get the track id from the tfhd
+
+        var id = toUnsigned(tfhd[4] << 24 | tfhd[5] << 16 | tfhd[6] << 8 | tfhd[7]); // assume a 90kHz clock if no timescale was specified
+
+        var scale = timescale[id] || 90e3; // get the base media decode time from the tfdt
+
+        var tfdt = findBox(traf, ['tfdt'])[0];
+        var dv = new DataView(tfdt.buffer, tfdt.byteOffset, tfdt.byteLength);
+        var baseTime; // version 1 is 64 bit
+
+        if (tfdt[0] === 1) {
+          baseTime = getUint64(tfdt.subarray(4, 12));
+        } else {
+          baseTime = dv.getUint32(4);
+        } // convert base time to seconds if it is a valid number.
+
+        let seconds;
+        if (typeof baseTime === 'bigint') {
+          seconds = baseTime / window$1.BigInt(scale);
+        } else if (typeof baseTime === 'number' && !isNaN(baseTime)) {
+          seconds = baseTime / scale;
+        }
+        if (seconds < Number.MAX_SAFE_INTEGER) {
+          seconds = Number(seconds);
+        }
+        if (seconds < acc) {
+          acc = seconds;
+        }
+        return acc;
+      }, Infinity);
+      return typeof lowestTime === 'bigint' || isFinite(lowestTime) ? lowestTime : 0;
+    };
+    /**
+     * Determine the composition start, in seconds, for an MP4
+     * fragment.
+     *
+     * The composition start time of a fragment can be calculated using the base
+     * media decode time, composition time offset, and timescale, as follows:
+     *
+     * compositionStartTime = (baseMediaDecodeTime + compositionTimeOffset) / timescale
+     *
+     * All of the aforementioned information is contained within a media fragment's
+     * `traf` box, except for timescale info, which comes from the initialization
+     * segment, so a track id (also contained within a `traf`) is also necessary to
+     * associate it with a timescale
+     *
+     *
+     * @param timescales {object} - a hash of track ids to timescale values.
+     * @param fragment {Unit8Array} - the bytes of a media segment
+     * @return {number} the composition start time for the fragment, in seconds
+     **/
+
+    compositionStartTime = function (timescales, fragment) {
+      var trafBoxes = findBox(fragment, ['moof', 'traf']);
+      var baseMediaDecodeTime = 0;
+      var compositionTimeOffset = 0;
+      var trackId;
+      if (trafBoxes && trafBoxes.length) {
+        // The spec states that track run samples contained within a `traf` box are contiguous, but
+        // it does not explicitly state whether the `traf` boxes themselves are contiguous.
+        // We will assume that they are, so we only need the first to calculate start time.
+        var tfhd = findBox(trafBoxes[0], ['tfhd'])[0];
+        var trun = findBox(trafBoxes[0], ['trun'])[0];
+        var tfdt = findBox(trafBoxes[0], ['tfdt'])[0];
+        if (tfhd) {
+          var parsedTfhd = parseTfhd(tfhd);
+          trackId = parsedTfhd.trackId;
+        }
+        if (tfdt) {
+          var parsedTfdt = parseTfdt(tfdt);
+          baseMediaDecodeTime = parsedTfdt.baseMediaDecodeTime;
+        }
+        if (trun) {
+          var parsedTrun = parseTrun(trun);
+          if (parsedTrun.samples && parsedTrun.samples.length) {
+            compositionTimeOffset = parsedTrun.samples[0].compositionTimeOffset || 0;
+          }
+        }
+      } // Get timescale for this specific track. Assume a 90kHz clock if no timescale was
+      // specified.
+
+      var timescale = timescales[trackId] || 90e3; // return the composition start time, in seconds
+
+      if (typeof baseMediaDecodeTime === 'bigint') {
+        compositionTimeOffset = window$1.BigInt(compositionTimeOffset);
+        timescale = window$1.BigInt(timescale);
+      }
+      var result = (baseMediaDecodeTime + compositionTimeOffset) / timescale;
+      if (typeof result === 'bigint' && result < Number.MAX_SAFE_INTEGER) {
+        result = Number(result);
+      }
+      return result;
+    };
+    /**
+      * Find the trackIds of the video tracks in this source.
+      * Found by parsing the Handler Reference and Track Header Boxes:
+      *   moov > trak > mdia > hdlr
+      *   moov > trak > tkhd
+      *
+      * @param {Uint8Array} init - The bytes of the init segment for this source
+      * @return {Number[]} A list of trackIds
+      *
+      * @see ISO-BMFF-12/2015, Section 8.4.3
+     **/
+
+    getVideoTrackIds = function (init) {
+      var traks = findBox(init, ['moov', 'trak']);
+      var videoTrackIds = [];
+      traks.forEach(function (trak) {
+        var hdlrs = findBox(trak, ['mdia', 'hdlr']);
+        var tkhds = findBox(trak, ['tkhd']);
+        hdlrs.forEach(function (hdlr, index) {
+          var handlerType = parseType$1(hdlr.subarray(8, 12));
+          var tkhd = tkhds[index];
+          var view;
+          var version;
+          var trackId;
+          if (handlerType === 'vide') {
+            view = new DataView(tkhd.buffer, tkhd.byteOffset, tkhd.byteLength);
+            version = view.getUint8(0);
+            trackId = version === 0 ? view.getUint32(12) : view.getUint32(20);
+            videoTrackIds.push(trackId);
+          }
+        });
+      });
+      return videoTrackIds;
+    };
+    getTimescaleFromMediaHeader = function (mdhd) {
+      // mdhd is a FullBox, meaning it will have its own version as the first byte
+      var version = mdhd[0];
+      var index = version === 0 ? 12 : 20;
+      return toUnsigned(mdhd[index] << 24 | mdhd[index + 1] << 16 | mdhd[index + 2] << 8 | mdhd[index + 3]);
+    };
+    /**
+     * Get all the video, audio, and hint tracks from a non fragmented
+     * mp4 segment
+     */
+
+    getTracks = function (init) {
+      var traks = findBox(init, ['moov', 'trak']);
+      var tracks = [];
+      traks.forEach(function (trak) {
+        var track = {};
+        var tkhd = findBox(trak, ['tkhd'])[0];
+        var view, tkhdVersion; // id
+
+        if (tkhd) {
+          view = new DataView(tkhd.buffer, tkhd.byteOffset, tkhd.byteLength);
+          tkhdVersion = view.getUint8(0);
+          track.id = tkhdVersion === 0 ? view.getUint32(12) : view.getUint32(20);
+        }
+        var hdlr = findBox(trak, ['mdia', 'hdlr'])[0]; // type
+
+        if (hdlr) {
+          var type = parseType$1(hdlr.subarray(8, 12));
+          if (type === 'vide') {
+            track.type = 'video';
+          } else if (type === 'soun') {
+            track.type = 'audio';
+          } else {
+            track.type = type;
+          }
+        } // codec
+
+        var stsd = findBox(trak, ['mdia', 'minf', 'stbl', 'stsd'])[0];
+        if (stsd) {
+          var sampleDescriptions = stsd.subarray(8); // gives the codec type string
+
+          track.codec = parseType$1(sampleDescriptions.subarray(4, 8));
+          var codecBox = findBox(sampleDescriptions, [track.codec])[0];
+          var codecConfig, codecConfigType;
+          if (codecBox) {
+            // https://tools.ietf.org/html/rfc6381#section-3.3
+            if (/^[asm]vc[1-9]$/i.test(track.codec)) {
+              // we don't need anything but the "config" parameter of the
+              // avc1 codecBox
+              codecConfig = codecBox.subarray(78);
+              codecConfigType = parseType$1(codecConfig.subarray(4, 8));
+              if (codecConfigType === 'avcC' && codecConfig.length > 11) {
+                track.codec += '.'; // left padded with zeroes for single digit hex
+                // profile idc
+
+                track.codec += toHexString(codecConfig[9]); // the byte containing the constraint_set flags
+
+                track.codec += toHexString(codecConfig[10]); // level idc
+
+                track.codec += toHexString(codecConfig[11]);
+              } else {
+                // TODO: show a warning that we couldn't parse the codec
+                // and are using the default
+                track.codec = 'avc1.4d400d';
+              }
+            } else if (/^mp4[a,v]$/i.test(track.codec)) {
+              // we do not need anything but the streamDescriptor of the mp4a codecBox
+              codecConfig = codecBox.subarray(28);
+              codecConfigType = parseType$1(codecConfig.subarray(4, 8));
+              if (codecConfigType === 'esds' && codecConfig.length > 20 && codecConfig[19] !== 0) {
+                track.codec += '.' + toHexString(codecConfig[19]); // this value is only a single digit
+
+                track.codec += '.' + toHexString(codecConfig[20] >>> 2 & 0x3f).replace(/^0/, '');
+              } else {
+                // TODO: show a warning that we couldn't parse the codec
+                // and are using the default
+                track.codec = 'mp4a.40.2';
+              }
+            } else {
+              // flac, opus, etc
+              track.codec = track.codec.toLowerCase();
+            }
+          }
+        }
+        var mdhd = findBox(trak, ['mdia', 'mdhd'])[0];
+        if (mdhd) {
+          track.timescale = getTimescaleFromMediaHeader(mdhd);
+        }
+        tracks.push(track);
+      });
+      return tracks;
+    };
+    /**
+     * Returns an array of emsg ID3 data from the provided segmentData.
+     * An offset can also be provided as the Latest Arrival Time to calculate 
+     * the Event Start Time of v0 EMSG boxes. 
+     * See: https://dashif-documents.azurewebsites.net/Events/master/event.html#Inband-event-timing
+     * 
+     * @param {Uint8Array} segmentData the segment byte array.
+     * @param {number} offset the segment start time or Latest Arrival Time, 
+     * @return {Object[]} an array of ID3 parsed from EMSG boxes
+     */
+
+    getEmsgID3 = function (segmentData, offset = 0) {
+      var emsgBoxes = findBox(segmentData, ['emsg']);
+      return emsgBoxes.map(data => {
+        var parsedBox = emsg.parseEmsgBox(new Uint8Array(data));
+        var parsedId3Frames = parseId3Frames(parsedBox.message_data);
+        return {
+          cueTime: emsg.scaleTime(parsedBox.presentation_time, parsedBox.timescale, parsedBox.presentation_time_delta, offset),
+          duration: emsg.scaleTime(parsedBox.event_duration, parsedBox.timescale),
+          frames: parsedId3Frames
+        };
+      });
+    };
+    var probe$2 = {
+      // export mp4 inspector's findBox and parseType for backwards compatibility
+      findBox: findBox,
+      parseType: parseType$1,
+      timescale: timescale,
+      startTime: startTime,
+      compositionStartTime: compositionStartTime,
+      videoTrackIds: getVideoTrackIds,
+      tracks: getTracks,
+      getTimescaleFromMediaHeader: getTimescaleFromMediaHeader,
+      getEmsgID3: getEmsgID3
+    };
+    /**
+     * mux.js
+     *
+     * Copyright (c) Brightcove
+     * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE
+     *
+     * Utilities to detect basic properties and metadata about TS Segments.
+     */
+
+    var StreamTypes$1 = streamTypes;
+    var parsePid = function (packet) {
+      var pid = packet[1] & 0x1f;
+      pid <<= 8;
+      pid |= packet[2];
+      return pid;
+    };
+    var parsePayloadUnitStartIndicator = function (packet) {
+      return !!(packet[1] & 0x40);
+    };
+    var parseAdaptionField = function (packet) {
+      var offset = 0; // if an adaption field is present, its length is specified by the
+      // fifth byte of the TS packet header. The adaptation field is
+      // used to add stuffing to PES packets that don't fill a complete
+      // TS packet, and to specify some forms of timing and control data
+      // that we do not currently use.
+
+      if ((packet[3] & 0x30) >>> 4 > 0x01) {
+        offset += packet[4] + 1;
+      }
+      return offset;
+    };
+    var parseType = function (packet, pmtPid) {
+      var pid = parsePid(packet);
+      if (pid === 0) {
+        return 'pat';
+      } else if (pid === pmtPid) {
+        return 'pmt';
+      } else if (pmtPid) {
+        return 'pes';
+      }
+      return null;
+    };
+    var parsePat = function (packet) {
+      var pusi = parsePayloadUnitStartIndicator(packet);
+      var offset = 4 + parseAdaptionField(packet);
+      if (pusi) {
+        offset += packet[offset] + 1;
+      }
+      return (packet[offset + 10] & 0x1f) << 8 | packet[offset + 11];
+    };
+    var parsePmt = function (packet) {
+      var programMapTable = {};
+      var pusi = parsePayloadUnitStartIndicator(packet);
+      var payloadOffset = 4 + parseAdaptionField(packet);
+      if (pusi) {
+        payloadOffset += packet[payloadOffset] + 1;
+      } // PMTs can be sent ahead of the time when they should actually
+      // take effect. We don't believe this should ever be the case
+      // for HLS but we'll ignore "forward" PMT declarations if we see
+      // them. Future PMT declarations have the current_next_indicator
+      // set to zero.
+
+      if (!(packet[payloadOffset + 5] & 0x01)) {
+        return;
+      }
+      var sectionLength, tableEnd, programInfoLength; // the mapping table ends at the end of the current section
+
+      sectionLength = (packet[payloadOffset + 1] & 0x0f) << 8 | packet[payloadOffset + 2];
+      tableEnd = 3 + sectionLength - 4; // to determine where the table is, we have to figure out how
+      // long the program info descriptors are
+
+      programInfoLength = (packet[payloadOffset + 10] & 0x0f) << 8 | packet[payloadOffset + 11]; // advance the offset to the first entry in the mapping table
+
+      var offset = 12 + programInfoLength;
+      while (offset < tableEnd) {
+        var i = payloadOffset + offset; // add an entry that maps the elementary_pid to the stream_type
+
+        programMapTable[(packet[i + 1] & 0x1F) << 8 | packet[i + 2]] = packet[i]; // move to the next table entry
+        // skip past the elementary stream descriptors, if present
+
+        offset += ((packet[i + 3] & 0x0F) << 8 | packet[i + 4]) + 5;
+      }
+      return programMapTable;
+    };
+    var parsePesType = function (packet, programMapTable) {
+      var pid = parsePid(packet);
+      var type = programMapTable[pid];
+      switch (type) {
+        case StreamTypes$1.H264_STREAM_TYPE:
+          return 'video';
+        case StreamTypes$1.ADTS_STREAM_TYPE:
+          return 'audio';
+        case StreamTypes$1.METADATA_STREAM_TYPE:
+          return 'timed-metadata';
+        default:
+          return null;
+      }
+    };
+    var parsePesTime = function (packet) {
+      var pusi = parsePayloadUnitStartIndicator(packet);
+      if (!pusi) {
+        return null;
+      }
+      var offset = 4 + parseAdaptionField(packet);
+      if (offset >= packet.byteLength) {
+        // From the H 222.0 MPEG-TS spec
+        // "For transport stream packets carrying PES packets, stuffing is needed when there
+        //  is insufficient PES packet data to completely fill the transport stream packet
+        //  payload bytes. Stuffing is accomplished by defining an adaptation field longer than
+        //  the sum of the lengths of the data elements in it, so that the payload bytes
+        //  remaining after the adaptation field exactly accommodates the available PES packet
+        //  data."
+        //
+        // If the offset is >= the length of the packet, then the packet contains no data
+        // and instead is just adaption field stuffing bytes
+        return null;
+      }
+      var pes = null;
+      var ptsDtsFlags; // PES packets may be annotated with a PTS value, or a PTS value
+      // and a DTS value. Determine what combination of values is
+      // available to work with.
+
+      ptsDtsFlags = packet[offset + 7]; // PTS and DTS are normally stored as a 33-bit number.  Javascript
+      // performs all bitwise operations on 32-bit integers but javascript
+      // supports a much greater range (52-bits) of integer using standard
+      // mathematical operations.
+      // We construct a 31-bit value using bitwise operators over the 31
+      // most significant bits and then multiply by 4 (equal to a left-shift
+      // of 2) before we add the final 2 least significant bits of the
+      // timestamp (equal to an OR.)
+
+      if (ptsDtsFlags & 0xC0) {
+        pes = {}; // the PTS and DTS are not written out directly. For information
+        // on how they are encoded, see
+        // http://dvd.sourceforge.net/dvdinfo/pes-hdr.html
+
+        pes.pts = (packet[offset + 9] & 0x0E) << 27 | (packet[offset + 10] & 0xFF) << 20 | (packet[offset + 11] & 0xFE) << 12 | (packet[offset + 12] & 0xFF) << 5 | (packet[offset + 13] & 0xFE) >>> 3;
+        pes.pts *= 4; // Left shift by 2
+
+        pes.pts += (packet[offset + 13] & 0x06) >>> 1; // OR by the two LSBs
+
+        pes.dts = pes.pts;
+        if (ptsDtsFlags & 0x40) {
+          pes.dts = (packet[offset + 14] & 0x0E) << 27 | (packet[offset + 15] & 0xFF) << 20 | (packet[offset + 16] & 0xFE) << 12 | (packet[offset + 17] & 0xFF) << 5 | (packet[offset + 18] & 0xFE) >>> 3;
+          pes.dts *= 4; // Left shift by 2
+
+          pes.dts += (packet[offset + 18] & 0x06) >>> 1; // OR by the two LSBs
+        }
+      }
+
+      return pes;
+    };
+    var parseNalUnitType = function (type) {
+      switch (type) {
+        case 0x05:
+          return 'slice_layer_without_partitioning_rbsp_idr';
+        case 0x06:
+          return 'sei_rbsp';
+        case 0x07:
+          return 'seq_parameter_set_rbsp';
+        case 0x08:
+          return 'pic_parameter_set_rbsp';
+        case 0x09:
+          return 'access_unit_delimiter_rbsp';
+        default:
+          return null;
+      }
+    };
+    var videoPacketContainsKeyFrame = function (packet) {
+      var offset = 4 + parseAdaptionField(packet);
+      var frameBuffer = packet.subarray(offset);
+      var frameI = 0;
+      var frameSyncPoint = 0;
+      var foundKeyFrame = false;
+      var nalType; // advance the sync point to a NAL start, if necessary
+
+      for (; frameSyncPoint < frameBuffer.byteLength - 3; frameSyncPoint++) {
+        if (frameBuffer[frameSyncPoint + 2] === 1) {
+          // the sync point is properly aligned
+          frameI = frameSyncPoint + 5;
+          break;
+        }
+      }
+      while (frameI < frameBuffer.byteLength) {
+        // look at the current byte to determine if we've hit the end of
+        // a NAL unit boundary
+        switch (frameBuffer[frameI]) {
+          case 0:
+            // skip past non-sync sequences
+            if (frameBuffer[frameI - 1] !== 0) {
+              frameI += 2;
+              break;
+            } else if (frameBuffer[frameI - 2] !== 0) {
+              frameI++;
+              break;
+            }
+            if (frameSyncPoint + 3 !== frameI - 2) {
+              nalType = parseNalUnitType(frameBuffer[frameSyncPoint + 3] & 0x1f);
+              if (nalType === 'slice_layer_without_partitioning_rbsp_idr') {
+                foundKeyFrame = true;
+              }
+            } // drop trailing zeroes
+
+            do {
+              frameI++;
+            } while (frameBuffer[frameI] !== 1 && frameI < frameBuffer.length);
+            frameSyncPoint = frameI - 2;
+            frameI += 3;
+            break;
+          case 1:
+            // skip past non-sync sequences
+            if (frameBuffer[frameI - 1] !== 0 || frameBuffer[frameI - 2] !== 0) {
+              frameI += 3;
+              break;
+            }
+            nalType = parseNalUnitType(frameBuffer[frameSyncPoint + 3] & 0x1f);
+            if (nalType === 'slice_layer_without_partitioning_rbsp_idr') {
+              foundKeyFrame = true;
+            }
+            frameSyncPoint = frameI - 2;
+            frameI += 3;
+            break;
+          default:
+            // the current byte isn't a one or zero, so it cannot be part
+            // of a sync sequence
+            frameI += 3;
+            break;
+        }
+      }
+      frameBuffer = frameBuffer.subarray(frameSyncPoint);
+      frameI -= frameSyncPoint;
+      frameSyncPoint = 0; // parse the final nal
+
+      if (frameBuffer && frameBuffer.byteLength > 3) {
+        nalType = parseNalUnitType(frameBuffer[frameSyncPoint + 3] & 0x1f);
+        if (nalType === 'slice_layer_without_partitioning_rbsp_idr') {
+          foundKeyFrame = true;
+        }
+      }
+      return foundKeyFrame;
+    };
+    var probe$1 = {
+      parseType: parseType,
+      parsePat: parsePat,
+      parsePmt: parsePmt,
+      parsePayloadUnitStartIndicator: parsePayloadUnitStartIndicator,
+      parsePesType: parsePesType,
+      parsePesTime: parsePesTime,
+      videoPacketContainsKeyFrame: videoPacketContainsKeyFrame
+    };
+    /**
+     * mux.js
+     *
+     * Copyright (c) Brightcove
+     * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE
+     *
+     * Parse mpeg2 transport stream packets to extract basic timing information
+     */
+
+    var StreamTypes = streamTypes;
+    var handleRollover = timestampRolloverStream.handleRollover;
+    var probe = {};
+    probe.ts = probe$1;
+    probe.aac = utils;
+    var ONE_SECOND_IN_TS = clock$2.ONE_SECOND_IN_TS;
+    var MP2T_PACKET_LENGTH = 188,
+      // bytes
+      SYNC_BYTE = 0x47;
+    /**
+     * walks through segment data looking for pat and pmt packets to parse out
+     * program map table information
+     */
+
+    var parsePsi_ = function (bytes, pmt) {
+      var startIndex = 0,
+        endIndex = MP2T_PACKET_LENGTH,
+        packet,
+        type;
+      while (endIndex < bytes.byteLength) {
+        // Look for a pair of start and end sync bytes in the data..
+        if (bytes[startIndex] === SYNC_BYTE && bytes[endIndex] === SYNC_BYTE) {
+          // We found a packet
+          packet = bytes.subarray(startIndex, endIndex);
+          type = probe.ts.parseType(packet, pmt.pid);
+          switch (type) {
+            case 'pat':
+              pmt.pid = probe.ts.parsePat(packet);
+              break;
+            case 'pmt':
+              var table = probe.ts.parsePmt(packet);
+              pmt.table = pmt.table || {};
+              Object.keys(table).forEach(function (key) {
+                pmt.table[key] = table[key];
+              });
+              break;
+          }
+          startIndex += MP2T_PACKET_LENGTH;
+          endIndex += MP2T_PACKET_LENGTH;
+          continue;
+        } // If we get here, we have somehow become de-synchronized and we need to step
+        // forward one byte at a time until we find a pair of sync bytes that denote
+        // a packet
+
+        startIndex++;
+        endIndex++;
+      }
+    };
+    /**
+     * walks through the segment data from the start and end to get timing information
+     * for the first and last audio pes packets
+     */
+
+    var parseAudioPes_ = function (bytes, pmt, result) {
+      var startIndex = 0,
+        endIndex = MP2T_PACKET_LENGTH,
+        packet,
+        type,
+        pesType,
+        pusi,
+        parsed;
+      var endLoop = false; // Start walking from start of segment to get first audio packet
+
+      while (endIndex <= bytes.byteLength) {
+        // Look for a pair of start and end sync bytes in the data..
+        if (bytes[startIndex] === SYNC_BYTE && (bytes[endIndex] === SYNC_BYTE || endIndex === bytes.byteLength)) {
+          // We found a packet
+          packet = bytes.subarray(startIndex, endIndex);
+          type = probe.ts.parseType(packet, pmt.pid);
+          switch (type) {
+            case 'pes':
+              pesType = probe.ts.parsePesType(packet, pmt.table);
+              pusi = probe.ts.parsePayloadUnitStartIndicator(packet);
+              if (pesType === 'audio' && pusi) {
+                parsed = probe.ts.parsePesTime(packet);
+                if (parsed) {
+                  parsed.type = 'audio';
+                  result.audio.push(parsed);
+                  endLoop = true;
+                }
+              }
+              break;
+          }
+          if (endLoop) {
+            break;
+          }
+          startIndex += MP2T_PACKET_LENGTH;
+          endIndex += MP2T_PACKET_LENGTH;
+          continue;
+        } // If we get here, we have somehow become de-synchronized and we need to step
+        // forward one byte at a time until we find a pair of sync bytes that denote
+        // a packet
+
+        startIndex++;
+        endIndex++;
+      } // Start walking from end of segment to get last audio packet
+
+      endIndex = bytes.byteLength;
+      startIndex = endIndex - MP2T_PACKET_LENGTH;
+      endLoop = false;
+      while (startIndex >= 0) {
+        // Look for a pair of start and end sync bytes in the data..
+        if (bytes[startIndex] === SYNC_BYTE && (bytes[endIndex] === SYNC_BYTE || endIndex === bytes.byteLength)) {
+          // We found a packet
+          packet = bytes.subarray(startIndex, endIndex);
+          type = probe.ts.parseType(packet, pmt.pid);
+          switch (type) {
+            case 'pes':
+              pesType = probe.ts.parsePesType(packet, pmt.table);
+              pusi = probe.ts.parsePayloadUnitStartIndicator(packet);
+              if (pesType === 'audio' && pusi) {
+                parsed = probe.ts.parsePesTime(packet);
+                if (parsed) {
+                  parsed.type = 'audio';
+                  result.audio.push(parsed);
+                  endLoop = true;
+                }
+              }
+              break;
+          }
+          if (endLoop) {
+            break;
+          }
+          startIndex -= MP2T_PACKET_LENGTH;
+          endIndex -= MP2T_PACKET_LENGTH;
+          continue;
+        } // If we get here, we have somehow become de-synchronized and we need to step
+        // forward one byte at a time until we find a pair of sync bytes that denote
+        // a packet
+
+        startIndex--;
+        endIndex--;
+      }
+    };
+    /**
+     * walks through the segment data from the start and end to get timing information
+     * for the first and last video pes packets as well as timing information for the first
+     * key frame.
+     */
+
+    var parseVideoPes_ = function (bytes, pmt, result) {
+      var startIndex = 0,
+        endIndex = MP2T_PACKET_LENGTH,
+        packet,
+        type,
+        pesType,
+        pusi,
+        parsed,
+        frame,
+        i,
+        pes;
+      var endLoop = false;
+      var currentFrame = {
+        data: [],
+        size: 0
+      }; // Start walking from start of segment to get first video packet
+
+      while (endIndex < bytes.byteLength) {
+        // Look for a pair of start and end sync bytes in the data..
+        if (bytes[startIndex] === SYNC_BYTE && bytes[endIndex] === SYNC_BYTE) {
+          // We found a packet
+          packet = bytes.subarray(startIndex, endIndex);
+          type = probe.ts.parseType(packet, pmt.pid);
+          switch (type) {
+            case 'pes':
+              pesType = probe.ts.parsePesType(packet, pmt.table);
+              pusi = probe.ts.parsePayloadUnitStartIndicator(packet);
+              if (pesType === 'video') {
+                if (pusi && !endLoop) {
+                  parsed = probe.ts.parsePesTime(packet);
+                  if (parsed) {
+                    parsed.type = 'video';
+                    result.video.push(parsed);
+                    endLoop = true;
+                  }
+                }
+                if (!result.firstKeyFrame) {
+                  if (pusi) {
+                    if (currentFrame.size !== 0) {
+                      frame = new Uint8Array(currentFrame.size);
+                      i = 0;
+                      while (currentFrame.data.length) {
+                        pes = currentFrame.data.shift();
+                        frame.set(pes, i);
+                        i += pes.byteLength;
+                      }
+                      if (probe.ts.videoPacketContainsKeyFrame(frame)) {
+                        var firstKeyFrame = probe.ts.parsePesTime(frame); // PTS/DTS may not be available. Simply *not* setting
+                        // the keyframe seems to work fine with HLS playback
+                        // and definitely preferable to a crash with TypeError...
+
+                        if (firstKeyFrame) {
+                          result.firstKeyFrame = firstKeyFrame;
+                          result.firstKeyFrame.type = 'video';
+                        } else {
+                          // eslint-disable-next-line
+                          console.warn('Failed to extract PTS/DTS from PES at first keyframe. ' + 'This could be an unusual TS segment, or else mux.js did not ' + 'parse your TS segment correctly. If you know your TS ' + 'segments do contain PTS/DTS on keyframes please file a bug ' + 'report! You can try ffprobe to double check for yourself.');
+                        }
+                      }
+                      currentFrame.size = 0;
+                    }
+                  }
+                  currentFrame.data.push(packet);
+                  currentFrame.size += packet.byteLength;
+                }
+              }
+              break;
+          }
+          if (endLoop && result.firstKeyFrame) {
+            break;
+          }
+          startIndex += MP2T_PACKET_LENGTH;
+          endIndex += MP2T_PACKET_LENGTH;
+          continue;
+        } // If we get here, we have somehow become de-synchronized and we need to step
+        // forward one byte at a time until we find a pair of sync bytes that denote
+        // a packet
+
+        startIndex++;
+        endIndex++;
+      } // Start walking from end of segment to get last video packet
+
+      endIndex = bytes.byteLength;
+      startIndex = endIndex - MP2T_PACKET_LENGTH;
+      endLoop = false;
+      while (startIndex >= 0) {
+        // Look for a pair of start and end sync bytes in the data..
+        if (bytes[startIndex] === SYNC_BYTE && bytes[endIndex] === SYNC_BYTE) {
+          // We found a packet
+          packet = bytes.subarray(startIndex, endIndex);
+          type = probe.ts.parseType(packet, pmt.pid);
+          switch (type) {
+            case 'pes':
+              pesType = probe.ts.parsePesType(packet, pmt.table);
+              pusi = probe.ts.parsePayloadUnitStartIndicator(packet);
+              if (pesType === 'video' && pusi) {
+                parsed = probe.ts.parsePesTime(packet);
+                if (parsed) {
+                  parsed.type = 'video';
+                  result.video.push(parsed);
+                  endLoop = true;
+                }
+              }
+              break;
+          }
+          if (endLoop) {
+            break;
+          }
+          startIndex -= MP2T_PACKET_LENGTH;
+          endIndex -= MP2T_PACKET_LENGTH;
+          continue;
+        } // If we get here, we have somehow become de-synchronized and we need to step
+        // forward one byte at a time until we find a pair of sync bytes that denote
+        // a packet
+
+        startIndex--;
+        endIndex--;
+      }
+    };
+    /**
+     * Adjusts the timestamp information for the segment to account for
+     * rollover and convert to seconds based on pes packet timescale (90khz clock)
+     */
+
+    var adjustTimestamp_ = function (segmentInfo, baseTimestamp) {
+      if (segmentInfo.audio && segmentInfo.audio.length) {
+        var audioBaseTimestamp = baseTimestamp;
+        if (typeof audioBaseTimestamp === 'undefined' || isNaN(audioBaseTimestamp)) {
+          audioBaseTimestamp = segmentInfo.audio[0].dts;
+        }
+        segmentInfo.audio.forEach(function (info) {
+          info.dts = handleRollover(info.dts, audioBaseTimestamp);
+          info.pts = handleRollover(info.pts, audioBaseTimestamp); // time in seconds
+
+          info.dtsTime = info.dts / ONE_SECOND_IN_TS;
+          info.ptsTime = info.pts / ONE_SECOND_IN_TS;
+        });
+      }
+      if (segmentInfo.video && segmentInfo.video.length) {
+        var videoBaseTimestamp = baseTimestamp;
+        if (typeof videoBaseTimestamp === 'undefined' || isNaN(videoBaseTimestamp)) {
+          videoBaseTimestamp = segmentInfo.video[0].dts;
+        }
+        segmentInfo.video.forEach(function (info) {
+          info.dts = handleRollover(info.dts, videoBaseTimestamp);
+          info.pts = handleRollover(info.pts, videoBaseTimestamp); // time in seconds
+
+          info.dtsTime = info.dts / ONE_SECOND_IN_TS;
+          info.ptsTime = info.pts / ONE_SECOND_IN_TS;
+        });
+        if (segmentInfo.firstKeyFrame) {
+          var frame = segmentInfo.firstKeyFrame;
+          frame.dts = handleRollover(frame.dts, videoBaseTimestamp);
+          frame.pts = handleRollover(frame.pts, videoBaseTimestamp); // time in seconds
+
+          frame.dtsTime = frame.dts / ONE_SECOND_IN_TS;
+          frame.ptsTime = frame.pts / ONE_SECOND_IN_TS;
+        }
+      }
+    };
+    /**
+     * inspects the aac data stream for start and end time information
+     */
+
+    var inspectAac_ = function (bytes) {
+      var endLoop = false,
+        audioCount = 0,
+        sampleRate = null,
+        timestamp = null,
+        frameSize = 0,
+        byteIndex = 0,
+        packet;
+      while (bytes.length - byteIndex >= 3) {
+        var type = probe.aac.parseType(bytes, byteIndex);
+        switch (type) {
+          case 'timed-metadata':
+            // Exit early because we don't have enough to parse
+            // the ID3 tag header
+            if (bytes.length - byteIndex < 10) {
+              endLoop = true;
+              break;
+            }
+            frameSize = probe.aac.parseId3TagSize(bytes, byteIndex); // Exit early if we don't have enough in the buffer
+            // to emit a full packet
+
+            if (frameSize > bytes.length) {
+              endLoop = true;
+              break;
+            }
+            if (timestamp === null) {
+              packet = bytes.subarray(byteIndex, byteIndex + frameSize);
+              timestamp = probe.aac.parseAacTimestamp(packet);
+            }
+            byteIndex += frameSize;
+            break;
+          case 'audio':
+            // Exit early because we don't have enough to parse
+            // the ADTS frame header
+            if (bytes.length - byteIndex < 7) {
+              endLoop = true;
+              break;
+            }
+            frameSize = probe.aac.parseAdtsSize(bytes, byteIndex); // Exit early if we don't have enough in the buffer
+            // to emit a full packet
+
+            if (frameSize > bytes.length) {
+              endLoop = true;
+              break;
+            }
+            if (sampleRate === null) {
+              packet = bytes.subarray(byteIndex, byteIndex + frameSize);
+              sampleRate = probe.aac.parseSampleRate(packet);
+            }
+            audioCount++;
+            byteIndex += frameSize;
+            break;
+          default:
+            byteIndex++;
+            break;
+        }
+        if (endLoop) {
+          return null;
+        }
+      }
+      if (sampleRate === null || timestamp === null) {
+        return null;
+      }
+      var audioTimescale = ONE_SECOND_IN_TS / sampleRate;
+      var result = {
+        audio: [{
+          type: 'audio',
+          dts: timestamp,
+          pts: timestamp
+        }, {
+          type: 'audio',
+          dts: timestamp + audioCount * 1024 * audioTimescale,
+          pts: timestamp + audioCount * 1024 * audioTimescale
+        }]
+      };
+      return result;
+    };
+    /**
+     * inspects the transport stream segment data for start and end time information
+     * of the audio and video tracks (when present) as well as the first key frame's
+     * start time.
+     */
+
+    var inspectTs_ = function (bytes) {
+      var pmt = {
+        pid: null,
+        table: null
+      };
+      var result = {};
+      parsePsi_(bytes, pmt);
+      for (var pid in pmt.table) {
+        if (pmt.table.hasOwnProperty(pid)) {
+          var type = pmt.table[pid];
+          switch (type) {
+            case StreamTypes.H264_STREAM_TYPE:
+              result.video = [];
+              parseVideoPes_(bytes, pmt, result);
+              if (result.video.length === 0) {
+                delete result.video;
+              }
+              break;
+            case StreamTypes.ADTS_STREAM_TYPE:
+              result.audio = [];
+              parseAudioPes_(bytes, pmt, result);
+              if (result.audio.length === 0) {
+                delete result.audio;
+              }
+              break;
+          }
+        }
+      }
+      return result;
+    };
+    /**
+     * Inspects segment byte data and returns an object with start and end timing information
+     *
+     * @param {Uint8Array} bytes The segment byte data
+     * @param {Number} baseTimestamp Relative reference timestamp used when adjusting frame
+     *  timestamps for rollover. This value must be in 90khz clock.
+     * @return {Object} Object containing start and end frame timing info of segment.
+     */
+
+    var inspect = function (bytes, baseTimestamp) {
+      var isAacData = probe.aac.isLikelyAacData(bytes);
+      var result;
+      if (isAacData) {
+        result = inspectAac_(bytes);
+      } else {
+        result = inspectTs_(bytes);
+      }
+      if (!result || !result.audio && !result.video) {
+        return null;
+      }
+      adjustTimestamp_(result, baseTimestamp);
+      return result;
+    };
+    var tsInspector = {
+      inspect: inspect,
+      parseAudioPes_: parseAudioPes_
+    };
+    /* global self */
+
+    /**
+     * Re-emits transmuxer events by converting them into messages to the
+     * world outside the worker.
+     *
+     * @param {Object} transmuxer the transmuxer to wire events on
+     * @private
+     */
+
+    const wireTransmuxerEvents = function (self, transmuxer) {
+      transmuxer.on('data', function (segment) {
+        // transfer ownership of the underlying ArrayBuffer
+        // instead of doing a copy to save memory
+        // ArrayBuffers are transferable but generic TypedArrays are not
+        // @link https://developer.mozilla.org/en-US/docs/Web/API/Web_Workers_API/Using_web_workers#Passing_data_by_transferring_ownership_(transferable_objects)
+        const initArray = segment.initSegment;
+        segment.initSegment = {
+          data: initArray.buffer,
+          byteOffset: initArray.byteOffset,
+          byteLength: initArray.byteLength
+        };
+        const typedArray = segment.data;
+        segment.data = typedArray.buffer;
+        self.postMessage({
+          action: 'data',
+          segment,
+          byteOffset: typedArray.byteOffset,
+          byteLength: typedArray.byteLength
+        }, [segment.data]);
+      });
+      transmuxer.on('done', function (data) {
+        self.postMessage({
+          action: 'done'
+        });
+      });
+      transmuxer.on('gopInfo', function (gopInfo) {
+        self.postMessage({
+          action: 'gopInfo',
+          gopInfo
+        });
+      });
+      transmuxer.on('videoSegmentTimingInfo', function (timingInfo) {
+        const videoSegmentTimingInfo = {
+          start: {
+            decode: clock$2.videoTsToSeconds(timingInfo.start.dts),
+            presentation: clock$2.videoTsToSeconds(timingInfo.start.pts)
+          },
+          end: {
+            decode: clock$2.videoTsToSeconds(timingInfo.end.dts),
+            presentation: clock$2.videoTsToSeconds(timingInfo.end.pts)
+          },
+          baseMediaDecodeTime: clock$2.videoTsToSeconds(timingInfo.baseMediaDecodeTime)
+        };
+        if (timingInfo.prependedContentDuration) {
+          videoSegmentTimingInfo.prependedContentDuration = clock$2.videoTsToSeconds(timingInfo.prependedContentDuration);
+        }
+        self.postMessage({
+          action: 'videoSegmentTimingInfo',
+          videoSegmentTimingInfo
+        });
+      });
+      transmuxer.on('audioSegmentTimingInfo', function (timingInfo) {
+        // Note that all times for [audio/video]SegmentTimingInfo events are in video clock
+        const audioSegmentTimingInfo = {
+          start: {
+            decode: clock$2.videoTsToSeconds(timingInfo.start.dts),
+            presentation: clock$2.videoTsToSeconds(timingInfo.start.pts)
+          },
+          end: {
+            decode: clock$2.videoTsToSeconds(timingInfo.end.dts),
+            presentation: clock$2.videoTsToSeconds(timingInfo.end.pts)
+          },
+          baseMediaDecodeTime: clock$2.videoTsToSeconds(timingInfo.baseMediaDecodeTime)
+        };
+        if (timingInfo.prependedContentDuration) {
+          audioSegmentTimingInfo.prependedContentDuration = clock$2.videoTsToSeconds(timingInfo.prependedContentDuration);
+        }
+        self.postMessage({
+          action: 'audioSegmentTimingInfo',
+          audioSegmentTimingInfo
+        });
+      });
+      transmuxer.on('id3Frame', function (id3Frame) {
+        self.postMessage({
+          action: 'id3Frame',
+          id3Frame
+        });
+      });
+      transmuxer.on('caption', function (caption) {
+        self.postMessage({
+          action: 'caption',
+          caption
+        });
+      });
+      transmuxer.on('trackinfo', function (trackInfo) {
+        self.postMessage({
+          action: 'trackinfo',
+          trackInfo
+        });
+      });
+      transmuxer.on('audioTimingInfo', function (audioTimingInfo) {
+        // convert to video TS since we prioritize video time over audio
+        self.postMessage({
+          action: 'audioTimingInfo',
+          audioTimingInfo: {
+            start: clock$2.videoTsToSeconds(audioTimingInfo.start),
+            end: clock$2.videoTsToSeconds(audioTimingInfo.end)
+          }
+        });
+      });
+      transmuxer.on('videoTimingInfo', function (videoTimingInfo) {
+        self.postMessage({
+          action: 'videoTimingInfo',
+          videoTimingInfo: {
+            start: clock$2.videoTsToSeconds(videoTimingInfo.start),
+            end: clock$2.videoTsToSeconds(videoTimingInfo.end)
+          }
+        });
+      });
+      transmuxer.on('log', function (log) {
+        self.postMessage({
+          action: 'log',
+          log
+        });
+      });
+    };
+    /**
+     * All incoming messages route through this hash. If no function exists
+     * to handle an incoming message, then we ignore the message.
+     *
+     * @class MessageHandlers
+     * @param {Object} options the options to initialize with
+     */
+
+    class MessageHandlers {
+      constructor(self, options) {
+        this.options = options || {};
+        this.self = self;
+        this.init();
+      }
+      /**
+       * initialize our web worker and wire all the events.
+       */
+
+      init() {
+        if (this.transmuxer) {
+          this.transmuxer.dispose();
+        }
+        this.transmuxer = new transmuxer.Transmuxer(this.options);
+        wireTransmuxerEvents(this.self, this.transmuxer);
+      }
+      pushMp4Captions(data) {
+        if (!this.captionParser) {
+          this.captionParser = new captionParser();
+          this.captionParser.init();
+        }
+        const segment = new Uint8Array(data.data, data.byteOffset, data.byteLength);
+        const parsed = this.captionParser.parse(segment, data.trackIds, data.timescales);
+        this.self.postMessage({
+          action: 'mp4Captions',
+          captions: parsed && parsed.captions || [],
+          logs: parsed && parsed.logs || [],
+          data: segment.buffer
+        }, [segment.buffer]);
+      }
+      probeMp4StartTime({
+        timescales,
+        data
+      }) {
+        const startTime = probe$2.startTime(timescales, data);
+        this.self.postMessage({
+          action: 'probeMp4StartTime',
+          startTime,
+          data
+        }, [data.buffer]);
+      }
+      probeMp4Tracks({
+        data
+      }) {
+        const tracks = probe$2.tracks(data);
+        this.self.postMessage({
+          action: 'probeMp4Tracks',
+          tracks,
+          data
+        }, [data.buffer]);
+      }
+      /**
+       * Probes an mp4 segment for EMSG boxes containing ID3 data.
+       * https://aomediacodec.github.io/id3-emsg/
+       *
+       * @param {Uint8Array} data segment data
+       * @param {number} offset segment start time
+       * @return {Object[]} an array of ID3 frames
+       */
+
+      probeEmsgID3({
+        data,
+        offset
+      }) {
+        const id3Frames = probe$2.getEmsgID3(data, offset);
+        this.self.postMessage({
+          action: 'probeEmsgID3',
+          id3Frames,
+          emsgData: data
+        }, [data.buffer]);
+      }
+      /**
+       * Probe an mpeg2-ts segment to determine the start time of the segment in it's
+       * internal "media time," as well as whether it contains video and/or audio.
+       *
+       * @private
+       * @param {Uint8Array} bytes - segment bytes
+       * @param {number} baseStartTime
+       *        Relative reference timestamp used when adjusting frame timestamps for rollover.
+       *        This value should be in seconds, as it's converted to a 90khz clock within the
+       *        function body.
+       * @return {Object} The start time of the current segment in "media time" as well as
+       *                  whether it contains video and/or audio
+       */
+
+      probeTs({
+        data,
+        baseStartTime
+      }) {
+        const tsStartTime = typeof baseStartTime === 'number' && !isNaN(baseStartTime) ? baseStartTime * clock$2.ONE_SECOND_IN_TS : void 0;
+        const timeInfo = tsInspector.inspect(data, tsStartTime);
+        let result = null;
+        if (timeInfo) {
+          result = {
+            // each type's time info comes back as an array of 2 times, start and end
+            hasVideo: timeInfo.video && timeInfo.video.length === 2 || false,
+            hasAudio: timeInfo.audio && timeInfo.audio.length === 2 || false
+          };
+          if (result.hasVideo) {
+            result.videoStart = timeInfo.video[0].ptsTime;
+          }
+          if (result.hasAudio) {
+            result.audioStart = timeInfo.audio[0].ptsTime;
+          }
+        }
+        this.self.postMessage({
+          action: 'probeTs',
+          result,
+          data
+        }, [data.buffer]);
+      }
+      clearAllMp4Captions() {
+        if (this.captionParser) {
+          this.captionParser.clearAllCaptions();
+        }
+      }
+      clearParsedMp4Captions() {
+        if (this.captionParser) {
+          this.captionParser.clearParsedCaptions();
+        }
+      }
+      /**
+       * Adds data (a ts segment) to the start of the transmuxer pipeline for
+       * processing.
+       *
+       * @param {ArrayBuffer} data data to push into the muxer
+       */
+
+      push(data) {
+        // Cast array buffer to correct type for transmuxer
+        const segment = new Uint8Array(data.data, data.byteOffset, data.byteLength);
+        this.transmuxer.push(segment);
+      }
+      /**
+       * Recreate the transmuxer so that the next segment added via `push`
+       * start with a fresh transmuxer.
+       */
+
+      reset() {
+        this.transmuxer.reset();
+      }
+      /**
+       * Set the value that will be used as the `baseMediaDecodeTime` time for the
+       * next segment pushed in. Subsequent segments will have their `baseMediaDecodeTime`
+       * set relative to the first based on the PTS values.
+       *
+       * @param {Object} data used to set the timestamp offset in the muxer
+       */
+
+      setTimestampOffset(data) {
+        const timestampOffset = data.timestampOffset || 0;
+        this.transmuxer.setBaseMediaDecodeTime(Math.round(clock$2.secondsToVideoTs(timestampOffset)));
+      }
+      setAudioAppendStart(data) {
+        this.transmuxer.setAudioAppendStart(Math.ceil(clock$2.secondsToVideoTs(data.appendStart)));
+      }
+      setRemux(data) {
+        this.transmuxer.setRemux(data.remux);
+      }
+      /**
+       * Forces the pipeline to finish processing the last segment and emit it's
+       * results.
+       *
+       * @param {Object} data event data, not really used
+       */
+
+      flush(data) {
+        this.transmuxer.flush(); // transmuxed done action is fired after both audio/video pipelines are flushed
+
+        self.postMessage({
+          action: 'done',
+          type: 'transmuxed'
+        });
+      }
+      endTimeline() {
+        this.transmuxer.endTimeline(); // transmuxed endedtimeline action is fired after both audio/video pipelines end their
+        // timelines
+
+        self.postMessage({
+          action: 'endedtimeline',
+          type: 'transmuxed'
+        });
+      }
+      alignGopsWith(data) {
+        this.transmuxer.alignGopsWith(data.gopsToAlignWith.slice());
+      }
+    }
+    /**
+     * Our web worker interface so that things can talk to mux.js
+     * that will be running in a web worker. the scope is passed to this by
+     * webworkify.
+     *
+     * @param {Object} self the scope for the web worker
+     */
+
+    self.onmessage = function (event) {
+      if (event.data.action === 'init' && event.data.options) {
+        this.messageHandlers = new MessageHandlers(self, event.data.options);
+        return;
+      }
+      if (!this.messageHandlers) {
+        this.messageHandlers = new MessageHandlers(self);
+      }
+      if (event.data && event.data.action && event.data.action !== 'init') {
+        if (this.messageHandlers[event.data.action]) {
+          this.messageHandlers[event.data.action](event.data);
+        }
+      }
+    };
+  }));
+  var TransmuxWorker = factory(workerCode$1);
+  /* rollup-plugin-worker-factory end for worker!/home/runner/work/http-streaming/http-streaming/src/transmuxer-worker.js */
+
+  const handleData_ = (event, transmuxedData, callback) => {
+    const {
+      type,
+      initSegment,
+      captions,
+      captionStreams,
+      metadata,
+      videoFrameDtsTime,
+      videoFramePtsTime
+    } = event.data.segment;
+    transmuxedData.buffer.push({
+      captions,
+      captionStreams,
+      metadata
+    });
+    const boxes = event.data.segment.boxes || {
+      data: event.data.segment.data
+    };
+    const result = {
+      type,
+      // cast ArrayBuffer to TypedArray
+      data: new Uint8Array(boxes.data, boxes.data.byteOffset, boxes.data.byteLength),
+      initSegment: new Uint8Array(initSegment.data, initSegment.byteOffset, initSegment.byteLength)
+    };
+    if (typeof videoFrameDtsTime !== 'undefined') {
+      result.videoFrameDtsTime = videoFrameDtsTime;
+    }
+    if (typeof videoFramePtsTime !== 'undefined') {
+      result.videoFramePtsTime = videoFramePtsTime;
+    }
+    callback(result);
+  };
+  const handleDone_ = ({
+    transmuxedData,
+    callback
+  }) => {
+    // Previously we only returned data on data events,
+    // not on done events. Clear out the buffer to keep that consistent.
+    transmuxedData.buffer = []; // all buffers should have been flushed from the muxer, so start processing anything we
+    // have received
+
+    callback(transmuxedData);
+  };
+  const handleGopInfo_ = (event, transmuxedData) => {
+    transmuxedData.gopInfo = event.data.gopInfo;
+  };
+  const processTransmux = options => {
+    const {
+      transmuxer,
+      bytes,
+      audioAppendStart,
+      gopsToAlignWith,
+      remux,
+      onData,
+      onTrackInfo,
+      onAudioTimingInfo,
+      onVideoTimingInfo,
+      onVideoSegmentTimingInfo,
+      onAudioSegmentTimingInfo,
+      onId3,
+      onCaptions,
+      onDone,
+      onEndedTimeline,
+      onTransmuxerLog,
+      isEndOfTimeline
+    } = options;
+    const transmuxedData = {
+      buffer: []
+    };
+    let waitForEndedTimelineEvent = isEndOfTimeline;
+    const handleMessage = event => {
+      if (transmuxer.currentTransmux !== options) {
+        // disposed
+        return;
+      }
+      if (event.data.action === 'data') {
+        handleData_(event, transmuxedData, onData);
+      }
+      if (event.data.action === 'trackinfo') {
+        onTrackInfo(event.data.trackInfo);
+      }
+      if (event.data.action === 'gopInfo') {
+        handleGopInfo_(event, transmuxedData);
+      }
+      if (event.data.action === 'audioTimingInfo') {
+        onAudioTimingInfo(event.data.audioTimingInfo);
+      }
+      if (event.data.action === 'videoTimingInfo') {
+        onVideoTimingInfo(event.data.videoTimingInfo);
+      }
+      if (event.data.action === 'videoSegmentTimingInfo') {
+        onVideoSegmentTimingInfo(event.data.videoSegmentTimingInfo);
+      }
+      if (event.data.action === 'audioSegmentTimingInfo') {
+        onAudioSegmentTimingInfo(event.data.audioSegmentTimingInfo);
+      }
+      if (event.data.action === 'id3Frame') {
+        onId3([event.data.id3Frame], event.data.id3Frame.dispatchType);
+      }
+      if (event.data.action === 'caption') {
+        onCaptions(event.data.caption);
+      }
+      if (event.data.action === 'endedtimeline') {
+        waitForEndedTimelineEvent = false;
+        onEndedTimeline();
+      }
+      if (event.data.action === 'log') {
+        onTransmuxerLog(event.data.log);
+      } // wait for the transmuxed event since we may have audio and video
+
+      if (event.data.type !== 'transmuxed') {
+        return;
+      } // If the "endedtimeline" event has not yet fired, and this segment represents the end
+      // of a timeline, that means there may still be data events before the segment
+      // processing can be considerred complete. In that case, the final event should be
+      // an "endedtimeline" event with the type "transmuxed."
+
+      if (waitForEndedTimelineEvent) {
+        return;
+      }
+      transmuxer.onmessage = null;
+      handleDone_({
+        transmuxedData,
+        callback: onDone
+      });
+      /* eslint-disable no-use-before-define */
+
+      dequeue(transmuxer);
+      /* eslint-enable */
+    };
+
+    transmuxer.onmessage = handleMessage;
+    if (audioAppendStart) {
+      transmuxer.postMessage({
+        action: 'setAudioAppendStart',
+        appendStart: audioAppendStart
+      });
+    } // allow empty arrays to be passed to clear out GOPs
+
+    if (Array.isArray(gopsToAlignWith)) {
+      transmuxer.postMessage({
+        action: 'alignGopsWith',
+        gopsToAlignWith
+      });
+    }
+    if (typeof remux !== 'undefined') {
+      transmuxer.postMessage({
+        action: 'setRemux',
+        remux
+      });
+    }
+    if (bytes.byteLength) {
+      const buffer = bytes instanceof ArrayBuffer ? bytes : bytes.buffer;
+      const byteOffset = bytes instanceof ArrayBuffer ? 0 : bytes.byteOffset;
+      transmuxer.postMessage({
+        action: 'push',
+        // Send the typed-array of data as an ArrayBuffer so that
+        // it can be sent as a "Transferable" and avoid the costly
+        // memory copy
+        data: buffer,
+        // To recreate the original typed-array, we need information
+        // about what portion of the ArrayBuffer it was a view into
+        byteOffset,
+        byteLength: bytes.byteLength
+      }, [buffer]);
+    }
+    if (isEndOfTimeline) {
+      transmuxer.postMessage({
+        action: 'endTimeline'
+      });
+    } // even if we didn't push any bytes, we have to make sure we flush in case we reached
+    // the end of the segment
+
+    transmuxer.postMessage({
+      action: 'flush'
+    });
+  };
+  const dequeue = transmuxer => {
+    transmuxer.currentTransmux = null;
+    if (transmuxer.transmuxQueue.length) {
+      transmuxer.currentTransmux = transmuxer.transmuxQueue.shift();
+      if (typeof transmuxer.currentTransmux === 'function') {
+        transmuxer.currentTransmux();
+      } else {
+        processTransmux(transmuxer.currentTransmux);
+      }
+    }
+  };
+  const processAction = (transmuxer, action) => {
+    transmuxer.postMessage({
+      action
+    });
+    dequeue(transmuxer);
+  };
+  const enqueueAction = (action, transmuxer) => {
+    if (!transmuxer.currentTransmux) {
+      transmuxer.currentTransmux = action;
+      processAction(transmuxer, action);
+      return;
+    }
+    transmuxer.transmuxQueue.push(processAction.bind(null, transmuxer, action));
+  };
+  const reset = transmuxer => {
+    enqueueAction('reset', transmuxer);
+  };
+  const endTimeline = transmuxer => {
+    enqueueAction('endTimeline', transmuxer);
+  };
+  const transmux = options => {
+    if (!options.transmuxer.currentTransmux) {
+      options.transmuxer.currentTransmux = options;
+      processTransmux(options);
+      return;
+    }
+    options.transmuxer.transmuxQueue.push(options);
+  };
+  const createTransmuxer = options => {
+    const transmuxer = new TransmuxWorker();
+    transmuxer.currentTransmux = null;
+    transmuxer.transmuxQueue = [];
+    const term = transmuxer.terminate;
+    transmuxer.terminate = () => {
+      transmuxer.currentTransmux = null;
+      transmuxer.transmuxQueue.length = 0;
+      return term.call(transmuxer);
+    };
+    transmuxer.postMessage({
+      action: 'init',
+      options
+    });
+    return transmuxer;
+  };
+  var segmentTransmuxer = {
+    reset,
+    endTimeline,
+    transmux,
+    createTransmuxer
+  };
+  const workerCallback = function (options) {
+    const transmuxer = options.transmuxer;
+    const endAction = options.endAction || options.action;
+    const callback = options.callback;
+    const message = _extends$1({}, options, {
+      endAction: null,
+      transmuxer: null,
+      callback: null
+    });
+    const listenForEndEvent = event => {
+      if (event.data.action !== endAction) {
+        return;
+      }
+      transmuxer.removeEventListener('message', listenForEndEvent); // transfer ownership of bytes back to us.
+
+      if (event.data.data) {
+        event.data.data = new Uint8Array(event.data.data, options.byteOffset || 0, options.byteLength || event.data.data.byteLength);
+        if (options.data) {
+          options.data = event.data.data;
+        }
+      }
+      callback(event.data);
+    };
+    transmuxer.addEventListener('message', listenForEndEvent);
+    if (options.data) {
+      const isArrayBuffer = options.data instanceof ArrayBuffer;
+      message.byteOffset = isArrayBuffer ? 0 : options.data.byteOffset;
+      message.byteLength = options.data.byteLength;
+      const transfers = [isArrayBuffer ? options.data : options.data.buffer];
+      transmuxer.postMessage(message, transfers);
+    } else {
+      transmuxer.postMessage(message);
+    }
+  };
+  const REQUEST_ERRORS = {
+    FAILURE: 2,
+    TIMEOUT: -101,
+    ABORTED: -102
+  };
+  /**
+   * Abort all requests
+   *
+   * @param {Object} activeXhrs - an object that tracks all XHR requests
+   */
+
+  const abortAll = activeXhrs => {
+    activeXhrs.forEach(xhr => {
+      xhr.abort();
+    });
+  };
+  /**
+   * Gather important bandwidth stats once a request has completed
+   *
+   * @param {Object} request - the XHR request from which to gather stats
+   */
+
+  const getRequestStats = request => {
+    return {
+      bandwidth: request.bandwidth,
+      bytesReceived: request.bytesReceived || 0,
+      roundTripTime: request.roundTripTime || 0
+    };
+  };
+  /**
+   * If possible gather bandwidth stats as a request is in
+   * progress
+   *
+   * @param {Event} progressEvent - an event object from an XHR's progress event
+   */
+
+  const getProgressStats = progressEvent => {
+    const request = progressEvent.target;
+    const roundTripTime = Date.now() - request.requestTime;
+    const stats = {
+      bandwidth: Infinity,
+      bytesReceived: 0,
+      roundTripTime: roundTripTime || 0
+    };
+    stats.bytesReceived = progressEvent.loaded; // This can result in Infinity if stats.roundTripTime is 0 but that is ok
+    // because we should only use bandwidth stats on progress to determine when
+    // abort a request early due to insufficient bandwidth
+
+    stats.bandwidth = Math.floor(stats.bytesReceived / stats.roundTripTime * 8 * 1000);
+    return stats;
+  };
+  /**
+   * Handle all error conditions in one place and return an object
+   * with all the information
+   *
+   * @param {Error|null} error - if non-null signals an error occured with the XHR
+   * @param {Object} request -  the XHR request that possibly generated the error
+   */
+
+  const handleErrors = (error, request) => {
+    if (request.timedout) {
+      return {
+        status: request.status,
+        message: 'HLS request timed-out at URL: ' + request.uri,
+        code: REQUEST_ERRORS.TIMEOUT,
+        xhr: request
+      };
+    }
+    if (request.aborted) {
+      return {
+        status: request.status,
+        message: 'HLS request aborted at URL: ' + request.uri,
+        code: REQUEST_ERRORS.ABORTED,
+        xhr: request
+      };
+    }
+    if (error) {
+      return {
+        status: request.status,
+        message: 'HLS request errored at URL: ' + request.uri,
+        code: REQUEST_ERRORS.FAILURE,
+        xhr: request
+      };
+    }
+    if (request.responseType === 'arraybuffer' && request.response.byteLength === 0) {
+      return {
+        status: request.status,
+        message: 'Empty HLS response at URL: ' + request.uri,
+        code: REQUEST_ERRORS.FAILURE,
+        xhr: request
+      };
+    }
+    return null;
+  };
+  /**
+   * Handle responses for key data and convert the key data to the correct format
+   * for the decryption step later
+   *
+   * @param {Object} segment - a simplified copy of the segmentInfo object
+   *                           from SegmentLoader
+   * @param {Array} objects - objects to add the key bytes to.
+   * @param {Function} finishProcessingFn - a callback to execute to continue processing
+   *                                        this request
+   */
+
+  const handleKeyResponse = (segment, objects, finishProcessingFn) => (error, request) => {
+    const response = request.response;
+    const errorObj = handleErrors(error, request);
+    if (errorObj) {
+      return finishProcessingFn(errorObj, segment);
+    }
+    if (response.byteLength !== 16) {
+      return finishProcessingFn({
+        status: request.status,
+        message: 'Invalid HLS key at URL: ' + request.uri,
+        code: REQUEST_ERRORS.FAILURE,
+        xhr: request
+      }, segment);
+    }
+    const view = new DataView(response);
+    const bytes = new Uint32Array([view.getUint32(0), view.getUint32(4), view.getUint32(8), view.getUint32(12)]);
+    for (let i = 0; i < objects.length; i++) {
+      objects[i].bytes = bytes;
+    }
+    return finishProcessingFn(null, segment);
+  };
+  const parseInitSegment = (segment, callback) => {
+    const type = detectContainerForBytes(segment.map.bytes); // TODO: We should also handle ts init segments here, but we
+    // only know how to parse mp4 init segments at the moment
+
+    if (type !== 'mp4') {
+      const uri = segment.map.resolvedUri || segment.map.uri;
+      const mediaType = type || 'unknown';
+      return callback({
+        internal: true,
+        message: `Found unsupported ${mediaType} container for initialization segment at URL: ${uri}`,
+        code: REQUEST_ERRORS.FAILURE,
+        metadata: {
+          errorType: videojs.Error.UnsupportedMediaInitialization,
+          mediaType
+        }
+      });
+    }
+    workerCallback({
+      action: 'probeMp4Tracks',
+      data: segment.map.bytes,
+      transmuxer: segment.transmuxer,
+      callback: ({
+        tracks,
+        data
+      }) => {
+        // transfer bytes back to us
+        segment.map.bytes = data;
+        tracks.forEach(function (track) {
+          segment.map.tracks = segment.map.tracks || {}; // only support one track of each type for now
+
+          if (segment.map.tracks[track.type]) {
+            return;
+          }
+          segment.map.tracks[track.type] = track;
+          if (typeof track.id === 'number' && track.timescale) {
+            segment.map.timescales = segment.map.timescales || {};
+            segment.map.timescales[track.id] = track.timescale;
+          }
+        });
+        return callback(null);
+      }
+    });
+  };
+  /**
+   * Handle init-segment responses
+   *
+   * @param {Object} segment - a simplified copy of the segmentInfo object
+   *                           from SegmentLoader
+   * @param {Function} finishProcessingFn - a callback to execute to continue processing
+   *                                        this request
+   */
+
+  const handleInitSegmentResponse = ({
+    segment,
+    finishProcessingFn
+  }) => (error, request) => {
+    const errorObj = handleErrors(error, request);
+    if (errorObj) {
+      return finishProcessingFn(errorObj, segment);
+    }
+    const bytes = new Uint8Array(request.response); // init segment is encypted, we will have to wait
+    // until the key request is done to decrypt.
+
+    if (segment.map.key) {
+      segment.map.encryptedBytes = bytes;
+      return finishProcessingFn(null, segment);
+    }
+    segment.map.bytes = bytes;
+    parseInitSegment(segment, function (parseError) {
+      if (parseError) {
+        parseError.xhr = request;
+        parseError.status = request.status;
+        return finishProcessingFn(parseError, segment);
+      }
+      finishProcessingFn(null, segment);
+    });
+  };
+  /**
+   * Response handler for segment-requests being sure to set the correct
+   * property depending on whether the segment is encryped or not
+   * Also records and keeps track of stats that are used for ABR purposes
+   *
+   * @param {Object} segment - a simplified copy of the segmentInfo object
+   *                           from SegmentLoader
+   * @param {Function} finishProcessingFn - a callback to execute to continue processing
+   *                                        this request
+   */
+
+  const handleSegmentResponse = ({
+    segment,
+    finishProcessingFn,
+    responseType
+  }) => (error, request) => {
+    const errorObj = handleErrors(error, request);
+    if (errorObj) {
+      return finishProcessingFn(errorObj, segment);
+    }
+    const newBytes =
+    // although responseText "should" exist, this guard serves to prevent an error being
+    // thrown for two primary cases:
+    // 1. the mime type override stops working, or is not implemented for a specific
+    //    browser
+    // 2. when using mock XHR libraries like sinon that do not allow the override behavior
+    responseType === 'arraybuffer' || !request.responseText ? request.response : stringToArrayBuffer(request.responseText.substring(segment.lastReachedChar || 0));
+    segment.stats = getRequestStats(request);
+    if (segment.key) {
+      segment.encryptedBytes = new Uint8Array(newBytes);
+    } else {
+      segment.bytes = new Uint8Array(newBytes);
+    }
+    return finishProcessingFn(null, segment);
+  };
+  const transmuxAndNotify = ({
+    segment,
+    bytes,
+    trackInfoFn,
+    timingInfoFn,
+    videoSegmentTimingInfoFn,
+    audioSegmentTimingInfoFn,
+    id3Fn,
+    captionsFn,
+    isEndOfTimeline,
+    endedTimelineFn,
+    dataFn,
+    doneFn,
+    onTransmuxerLog
+  }) => {
+    const fmp4Tracks = segment.map && segment.map.tracks || {};
+    const isMuxed = Boolean(fmp4Tracks.audio && fmp4Tracks.video); // Keep references to each function so we can null them out after we're done with them.
+    // One reason for this is that in the case of full segments, we want to trust start
+    // times from the probe, rather than the transmuxer.
+
+    let audioStartFn = timingInfoFn.bind(null, segment, 'audio', 'start');
+    const audioEndFn = timingInfoFn.bind(null, segment, 'audio', 'end');
+    let videoStartFn = timingInfoFn.bind(null, segment, 'video', 'start');
+    const videoEndFn = timingInfoFn.bind(null, segment, 'video', 'end');
+    const finish = () => transmux({
+      bytes,
+      transmuxer: segment.transmuxer,
+      audioAppendStart: segment.audioAppendStart,
+      gopsToAlignWith: segment.gopsToAlignWith,
+      remux: isMuxed,
+      onData: result => {
+        result.type = result.type === 'combined' ? 'video' : result.type;
+        dataFn(segment, result);
+      },
+      onTrackInfo: trackInfo => {
+        if (trackInfoFn) {
+          if (isMuxed) {
+            trackInfo.isMuxed = true;
+          }
+          trackInfoFn(segment, trackInfo);
+        }
+      },
+      onAudioTimingInfo: audioTimingInfo => {
+        // we only want the first start value we encounter
+        if (audioStartFn && typeof audioTimingInfo.start !== 'undefined') {
+          audioStartFn(audioTimingInfo.start);
+          audioStartFn = null;
+        } // we want to continually update the end time
+
+        if (audioEndFn && typeof audioTimingInfo.end !== 'undefined') {
+          audioEndFn(audioTimingInfo.end);
+        }
+      },
+      onVideoTimingInfo: videoTimingInfo => {
+        // we only want the first start value we encounter
+        if (videoStartFn && typeof videoTimingInfo.start !== 'undefined') {
+          videoStartFn(videoTimingInfo.start);
+          videoStartFn = null;
+        } // we want to continually update the end time
+
+        if (videoEndFn && typeof videoTimingInfo.end !== 'undefined') {
+          videoEndFn(videoTimingInfo.end);
+        }
+      },
+      onVideoSegmentTimingInfo: videoSegmentTimingInfo => {
+        videoSegmentTimingInfoFn(videoSegmentTimingInfo);
+      },
+      onAudioSegmentTimingInfo: audioSegmentTimingInfo => {
+        audioSegmentTimingInfoFn(audioSegmentTimingInfo);
+      },
+      onId3: (id3Frames, dispatchType) => {
+        id3Fn(segment, id3Frames, dispatchType);
+      },
+      onCaptions: captions => {
+        captionsFn(segment, [captions]);
+      },
+      isEndOfTimeline,
+      onEndedTimeline: () => {
+        endedTimelineFn();
+      },
+      onTransmuxerLog,
+      onDone: result => {
+        if (!doneFn) {
+          return;
+        }
+        result.type = result.type === 'combined' ? 'video' : result.type;
+        doneFn(null, segment, result);
+      }
+    }); // In the transmuxer, we don't yet have the ability to extract a "proper" start time.
+    // Meaning cached frame data may corrupt our notion of where this segment
+    // really starts. To get around this, probe for the info needed.
+
+    workerCallback({
+      action: 'probeTs',
+      transmuxer: segment.transmuxer,
+      data: bytes,
+      baseStartTime: segment.baseStartTime,
+      callback: data => {
+        segment.bytes = bytes = data.data;
+        const probeResult = data.result;
+        if (probeResult) {
+          trackInfoFn(segment, {
+            hasAudio: probeResult.hasAudio,
+            hasVideo: probeResult.hasVideo,
+            isMuxed
+          });
+          trackInfoFn = null;
+        }
+        finish();
+      }
+    });
+  };
+  const handleSegmentBytes = ({
+    segment,
+    bytes,
+    trackInfoFn,
+    timingInfoFn,
+    videoSegmentTimingInfoFn,
+    audioSegmentTimingInfoFn,
+    id3Fn,
+    captionsFn,
+    isEndOfTimeline,
+    endedTimelineFn,
+    dataFn,
+    doneFn,
+    onTransmuxerLog
+  }) => {
+    let bytesAsUint8Array = new Uint8Array(bytes); // TODO:
+    // We should have a handler that fetches the number of bytes required
+    // to check if something is fmp4. This will allow us to save bandwidth
+    // because we can only exclude a playlist and abort requests
+    // by codec after trackinfo triggers.
+
+    if (isLikelyFmp4MediaSegment(bytesAsUint8Array)) {
+      segment.isFmp4 = true;
+      const {
+        tracks
+      } = segment.map;
+      const trackInfo = {
+        isFmp4: true,
+        hasVideo: !!tracks.video,
+        hasAudio: !!tracks.audio
+      }; // if we have a audio track, with a codec that is not set to
+      // encrypted audio
+
+      if (tracks.audio && tracks.audio.codec && tracks.audio.codec !== 'enca') {
+        trackInfo.audioCodec = tracks.audio.codec;
+      } // if we have a video track, with a codec that is not set to
+      // encrypted video
+
+      if (tracks.video && tracks.video.codec && tracks.video.codec !== 'encv') {
+        trackInfo.videoCodec = tracks.video.codec;
+      }
+      if (tracks.video && tracks.audio) {
+        trackInfo.isMuxed = true;
+      } // since we don't support appending fmp4 data on progress, we know we have the full
+      // segment here
+
+      trackInfoFn(segment, trackInfo); // The probe doesn't provide the segment end time, so only callback with the start
+      // time. The end time can be roughly calculated by the receiver using the duration.
+      //
+      // Note that the start time returned by the probe reflects the baseMediaDecodeTime, as
+      // that is the true start of the segment (where the playback engine should begin
+      // decoding).
+
+      const finishLoading = (captions, id3Frames) => {
+        // if the track still has audio at this point it is only possible
+        // for it to be audio only. See `tracks.video && tracks.audio` if statement
+        // above.
+        // we make sure to use segment.bytes here as that
+        dataFn(segment, {
+          data: bytesAsUint8Array,
+          type: trackInfo.hasAudio && !trackInfo.isMuxed ? 'audio' : 'video'
+        });
+        if (id3Frames && id3Frames.length) {
+          id3Fn(segment, id3Frames);
+        }
+        if (captions && captions.length) {
+          captionsFn(segment, captions);
+        }
+        doneFn(null, segment, {});
+      };
+      workerCallback({
+        action: 'probeMp4StartTime',
+        timescales: segment.map.timescales,
+        data: bytesAsUint8Array,
+        transmuxer: segment.transmuxer,
+        callback: ({
+          data,
+          startTime
+        }) => {
+          // transfer bytes back to us
+          bytes = data.buffer;
+          segment.bytes = bytesAsUint8Array = data;
+          if (trackInfo.hasAudio && !trackInfo.isMuxed) {
+            timingInfoFn(segment, 'audio', 'start', startTime);
+          }
+          if (trackInfo.hasVideo) {
+            timingInfoFn(segment, 'video', 'start', startTime);
+          }
+          workerCallback({
+            action: 'probeEmsgID3',
+            data: bytesAsUint8Array,
+            transmuxer: segment.transmuxer,
+            offset: startTime,
+            callback: ({
+              emsgData,
+              id3Frames
+            }) => {
+              // transfer bytes back to us
+              bytes = emsgData.buffer;
+              segment.bytes = bytesAsUint8Array = emsgData; // Run through the CaptionParser in case there are captions.
+              // Initialize CaptionParser if it hasn't been yet
+
+              if (!tracks.video || !emsgData.byteLength || !segment.transmuxer) {
+                finishLoading(undefined, id3Frames);
+                return;
+              }
+              workerCallback({
+                action: 'pushMp4Captions',
+                endAction: 'mp4Captions',
+                transmuxer: segment.transmuxer,
+                data: bytesAsUint8Array,
+                timescales: segment.map.timescales,
+                trackIds: [tracks.video.id],
+                callback: message => {
+                  // transfer bytes back to us
+                  bytes = message.data.buffer;
+                  segment.bytes = bytesAsUint8Array = message.data;
+                  message.logs.forEach(function (log) {
+                    onTransmuxerLog(merge(log, {
+                      stream: 'mp4CaptionParser'
+                    }));
+                  });
+                  finishLoading(message.captions, id3Frames);
+                }
+              });
+            }
+          });
+        }
+      });
+      return;
+    } // VTT or other segments that don't need processing
+
+    if (!segment.transmuxer) {
+      doneFn(null, segment, {});
+      return;
+    }
+    if (typeof segment.container === 'undefined') {
+      segment.container = detectContainerForBytes(bytesAsUint8Array);
+    }
+    if (segment.container !== 'ts' && segment.container !== 'aac') {
+      trackInfoFn(segment, {
+        hasAudio: false,
+        hasVideo: false
+      });
+      doneFn(null, segment, {});
+      return;
+    } // ts or aac
+
+    transmuxAndNotify({
+      segment,
+      bytes,
+      trackInfoFn,
+      timingInfoFn,
+      videoSegmentTimingInfoFn,
+      audioSegmentTimingInfoFn,
+      id3Fn,
+      captionsFn,
+      isEndOfTimeline,
+      endedTimelineFn,
+      dataFn,
+      doneFn,
+      onTransmuxerLog
+    });
+  };
+  const decrypt = function ({
+    id,
+    key,
+    encryptedBytes,
+    decryptionWorker
+  }, callback) {
+    const decryptionHandler = event => {
+      if (event.data.source === id) {
+        decryptionWorker.removeEventListener('message', decryptionHandler);
+        const decrypted = event.data.decrypted;
+        callback(new Uint8Array(decrypted.bytes, decrypted.byteOffset, decrypted.byteLength));
+      }
+    };
+    decryptionWorker.addEventListener('message', decryptionHandler);
+    let keyBytes;
+    if (key.bytes.slice) {
+      keyBytes = key.bytes.slice();
+    } else {
+      keyBytes = new Uint32Array(Array.prototype.slice.call(key.bytes));
+    } // incrementally decrypt the bytes
+
+    decryptionWorker.postMessage(createTransferableMessage({
+      source: id,
+      encrypted: encryptedBytes,
+      key: keyBytes,
+      iv: key.iv
+    }), [encryptedBytes.buffer, keyBytes.buffer]);
+  };
+  /**
+   * Decrypt the segment via the decryption web worker
+   *
+   * @param {WebWorker} decryptionWorker - a WebWorker interface to AES-128 decryption
+   *                                       routines
+   * @param {Object} segment - a simplified copy of the segmentInfo object
+   *                           from SegmentLoader
+   * @param {Function} trackInfoFn - a callback that receives track info
+   * @param {Function} timingInfoFn - a callback that receives timing info
+   * @param {Function} videoSegmentTimingInfoFn
+   *                   a callback that receives video timing info based on media times and
+   *                   any adjustments made by the transmuxer
+   * @param {Function} audioSegmentTimingInfoFn
+   *                   a callback that receives audio timing info based on media times and
+   *                   any adjustments made by the transmuxer
+   * @param {boolean}  isEndOfTimeline
+   *                   true if this segment represents the last segment in a timeline
+   * @param {Function} endedTimelineFn
+   *                   a callback made when a timeline is ended, will only be called if
+   *                   isEndOfTimeline is true
+   * @param {Function} dataFn - a callback that is executed when segment bytes are available
+   *                            and ready to use
+   * @param {Function} doneFn - a callback that is executed after decryption has completed
+   */
+
+  const decryptSegment = ({
+    decryptionWorker,
+    segment,
+    trackInfoFn,
+    timingInfoFn,
+    videoSegmentTimingInfoFn,
+    audioSegmentTimingInfoFn,
+    id3Fn,
+    captionsFn,
+    isEndOfTimeline,
+    endedTimelineFn,
+    dataFn,
+    doneFn,
+    onTransmuxerLog
+  }) => {
+    decrypt({
+      id: segment.requestId,
+      key: segment.key,
+      encryptedBytes: segment.encryptedBytes,
+      decryptionWorker
+    }, decryptedBytes => {
+      segment.bytes = decryptedBytes;
+      handleSegmentBytes({
+        segment,
+        bytes: segment.bytes,
+        trackInfoFn,
+        timingInfoFn,
+        videoSegmentTimingInfoFn,
+        audioSegmentTimingInfoFn,
+        id3Fn,
+        captionsFn,
+        isEndOfTimeline,
+        endedTimelineFn,
+        dataFn,
+        doneFn,
+        onTransmuxerLog
+      });
+    });
+  };
+  /**
+   * This function waits for all XHRs to finish (with either success or failure)
+   * before continueing processing via it's callback. The function gathers errors
+   * from each request into a single errors array so that the error status for
+   * each request can be examined later.
+   *
+   * @param {Object} activeXhrs - an object that tracks all XHR requests
+   * @param {WebWorker} decryptionWorker - a WebWorker interface to AES-128 decryption
+   *                                       routines
+   * @param {Function} trackInfoFn - a callback that receives track info
+   * @param {Function} timingInfoFn - a callback that receives timing info
+   * @param {Function} videoSegmentTimingInfoFn
+   *                   a callback that receives video timing info based on media times and
+   *                   any adjustments made by the transmuxer
+   * @param {Function} audioSegmentTimingInfoFn
+   *                   a callback that receives audio timing info based on media times and
+   *                   any adjustments made by the transmuxer
+   * @param {Function} id3Fn - a callback that receives ID3 metadata
+   * @param {Function} captionsFn - a callback that receives captions
+   * @param {boolean}  isEndOfTimeline
+   *                   true if this segment represents the last segment in a timeline
+   * @param {Function} endedTimelineFn
+   *                   a callback made when a timeline is ended, will only be called if
+   *                   isEndOfTimeline is true
+   * @param {Function} dataFn - a callback that is executed when segment bytes are available
+   *                            and ready to use
+   * @param {Function} doneFn - a callback that is executed after all resources have been
+   *                            downloaded and any decryption completed
+   */
+
+  const waitForCompletion = ({
+    activeXhrs,
+    decryptionWorker,
+    trackInfoFn,
+    timingInfoFn,
+    videoSegmentTimingInfoFn,
+    audioSegmentTimingInfoFn,
+    id3Fn,
+    captionsFn,
+    isEndOfTimeline,
+    endedTimelineFn,
+    dataFn,
+    doneFn,
+    onTransmuxerLog
+  }) => {
+    let count = 0;
+    let didError = false;
+    return (error, segment) => {
+      if (didError) {
+        return;
+      }
+      if (error) {
+        didError = true; // If there are errors, we have to abort any outstanding requests
+
+        abortAll(activeXhrs); // Even though the requests above are aborted, and in theory we could wait until we
+        // handle the aborted events from those requests, there are some cases where we may
+        // never get an aborted event. For instance, if the network connection is lost and
+        // there were two requests, the first may have triggered an error immediately, while
+        // the second request remains unsent. In that case, the aborted algorithm will not
+        // trigger an abort: see https://xhr.spec.whatwg.org/#the-abort()-method
+        //
+        // We also can't rely on the ready state of the XHR, since the request that
+        // triggered the connection error may also show as a ready state of 0 (unsent).
+        // Therefore, we have to finish this group of requests immediately after the first
+        // seen error.
+
+        return doneFn(error, segment);
+      }
+      count += 1;
+      if (count === activeXhrs.length) {
+        const segmentFinish = function () {
+          if (segment.encryptedBytes) {
+            return decryptSegment({
+              decryptionWorker,
+              segment,
+              trackInfoFn,
+              timingInfoFn,
+              videoSegmentTimingInfoFn,
+              audioSegmentTimingInfoFn,
+              id3Fn,
+              captionsFn,
+              isEndOfTimeline,
+              endedTimelineFn,
+              dataFn,
+              doneFn,
+              onTransmuxerLog
+            });
+          } // Otherwise, everything is ready just continue
+
+          handleSegmentBytes({
+            segment,
+            bytes: segment.bytes,
+            trackInfoFn,
+            timingInfoFn,
+            videoSegmentTimingInfoFn,
+            audioSegmentTimingInfoFn,
+            id3Fn,
+            captionsFn,
+            isEndOfTimeline,
+            endedTimelineFn,
+            dataFn,
+            doneFn,
+            onTransmuxerLog
+          });
+        }; // Keep track of when *all* of the requests have completed
+
+        segment.endOfAllRequests = Date.now();
+        if (segment.map && segment.map.encryptedBytes && !segment.map.bytes) {
+          return decrypt({
+            decryptionWorker,
+            // add -init to the "id" to differentiate between segment
+            // and init segment decryption, just in case they happen
+            // at the same time at some point in the future.
+            id: segment.requestId + '-init',
+            encryptedBytes: segment.map.encryptedBytes,
+            key: segment.map.key
+          }, decryptedBytes => {
+            segment.map.bytes = decryptedBytes;
+            parseInitSegment(segment, parseError => {
+              if (parseError) {
+                abortAll(activeXhrs);
+                return doneFn(parseError, segment);
+              }
+              segmentFinish();
+            });
+          });
+        }
+        segmentFinish();
+      }
+    };
+  };
+  /**
+   * Calls the abort callback if any request within the batch was aborted. Will only call
+   * the callback once per batch of requests, even if multiple were aborted.
+   *
+   * @param {Object} loadendState - state to check to see if the abort function was called
+   * @param {Function} abortFn - callback to call for abort
+   */
+
+  const handleLoadEnd = ({
+    loadendState,
+    abortFn
+  }) => event => {
+    const request = event.target;
+    if (request.aborted && abortFn && !loadendState.calledAbortFn) {
+      abortFn();
+      loadendState.calledAbortFn = true;
+    }
+  };
+  /**
+   * Simple progress event callback handler that gathers some stats before
+   * executing a provided callback with the `segment` object
+   *
+   * @param {Object} segment - a simplified copy of the segmentInfo object
+   *                           from SegmentLoader
+   * @param {Function} progressFn - a callback that is executed each time a progress event
+   *                                is received
+   * @param {Function} trackInfoFn - a callback that receives track info
+   * @param {Function} timingInfoFn - a callback that receives timing info
+   * @param {Function} videoSegmentTimingInfoFn
+   *                   a callback that receives video timing info based on media times and
+   *                   any adjustments made by the transmuxer
+   * @param {Function} audioSegmentTimingInfoFn
+   *                   a callback that receives audio timing info based on media times and
+   *                   any adjustments made by the transmuxer
+   * @param {boolean}  isEndOfTimeline
+   *                   true if this segment represents the last segment in a timeline
+   * @param {Function} endedTimelineFn
+   *                   a callback made when a timeline is ended, will only be called if
+   *                   isEndOfTimeline is true
+   * @param {Function} dataFn - a callback that is executed when segment bytes are available
+   *                            and ready to use
+   * @param {Event} event - the progress event object from XMLHttpRequest
+   */
+
+  const handleProgress = ({
+    segment,
+    progressFn,
+    trackInfoFn,
+    timingInfoFn,
+    videoSegmentTimingInfoFn,
+    audioSegmentTimingInfoFn,
+    id3Fn,
+    captionsFn,
+    isEndOfTimeline,
+    endedTimelineFn,
+    dataFn
+  }) => event => {
+    const request = event.target;
+    if (request.aborted) {
+      return;
+    }
+    segment.stats = merge(segment.stats, getProgressStats(event)); // record the time that we receive the first byte of data
+
+    if (!segment.stats.firstBytesReceivedAt && segment.stats.bytesReceived) {
+      segment.stats.firstBytesReceivedAt = Date.now();
+    }
+    return progressFn(event, segment);
+  };
+  /**
+   * Load all resources and does any processing necessary for a media-segment
+   *
+   * Features:
+   *   decrypts the media-segment if it has a key uri and an iv
+   *   aborts *all* requests if *any* one request fails
+   *
+   * The segment object, at minimum, has the following format:
+   * {
+   *   resolvedUri: String,
+   *   [transmuxer]: Object,
+   *   [byterange]: {
+   *     offset: Number,
+   *     length: Number
+   *   },
+   *   [key]: {
+   *     resolvedUri: String
+   *     [byterange]: {
+   *       offset: Number,
+   *       length: Number
+   *     },
+   *     iv: {
+   *       bytes: Uint32Array
+   *     }
+   *   },
+   *   [map]: {
+   *     resolvedUri: String,
+   *     [byterange]: {
+   *       offset: Number,
+   *       length: Number
+   *     },
+   *     [bytes]: Uint8Array
+   *   }
+   * }
+   * ...where [name] denotes optional properties
+   *
+   * @param {Function} xhr - an instance of the xhr wrapper in xhr.js
+   * @param {Object} xhrOptions - the base options to provide to all xhr requests
+   * @param {WebWorker} decryptionWorker - a WebWorker interface to AES-128
+   *                                       decryption routines
+   * @param {Object} segment - a simplified copy of the segmentInfo object
+   *                           from SegmentLoader
+   * @param {Function} abortFn - a callback called (only once) if any piece of a request was
+   *                             aborted
+   * @param {Function} progressFn - a callback that receives progress events from the main
+   *                                segment's xhr request
+   * @param {Function} trackInfoFn - a callback that receives track info
+   * @param {Function} timingInfoFn - a callback that receives timing info
+   * @param {Function} videoSegmentTimingInfoFn
+   *                   a callback that receives video timing info based on media times and
+   *                   any adjustments made by the transmuxer
+   * @param {Function} audioSegmentTimingInfoFn
+   *                   a callback that receives audio timing info based on media times and
+   *                   any adjustments made by the transmuxer
+   * @param {Function} id3Fn - a callback that receives ID3 metadata
+   * @param {Function} captionsFn - a callback that receives captions
+   * @param {boolean}  isEndOfTimeline
+   *                   true if this segment represents the last segment in a timeline
+   * @param {Function} endedTimelineFn
+   *                   a callback made when a timeline is ended, will only be called if
+   *                   isEndOfTimeline is true
+   * @param {Function} dataFn - a callback that receives data from the main segment's xhr
+   *                            request, transmuxed if needed
+   * @param {Function} doneFn - a callback that is executed only once all requests have
+   *                            succeeded or failed
+   * @return {Function} a function that, when invoked, immediately aborts all
+   *                     outstanding requests
+   */
+
+  const mediaSegmentRequest = ({
+    xhr,
+    xhrOptions,
+    decryptionWorker,
+    segment,
+    abortFn,
+    progressFn,
+    trackInfoFn,
+    timingInfoFn,
+    videoSegmentTimingInfoFn,
+    audioSegmentTimingInfoFn,
+    id3Fn,
+    captionsFn,
+    isEndOfTimeline,
+    endedTimelineFn,
+    dataFn,
+    doneFn,
+    onTransmuxerLog
+  }) => {
+    const activeXhrs = [];
+    const finishProcessingFn = waitForCompletion({
+      activeXhrs,
+      decryptionWorker,
+      trackInfoFn,
+      timingInfoFn,
+      videoSegmentTimingInfoFn,
+      audioSegmentTimingInfoFn,
+      id3Fn,
+      captionsFn,
+      isEndOfTimeline,
+      endedTimelineFn,
+      dataFn,
+      doneFn,
+      onTransmuxerLog
+    }); // optionally, request the decryption key
+
+    if (segment.key && !segment.key.bytes) {
+      const objects = [segment.key];
+      if (segment.map && !segment.map.bytes && segment.map.key && segment.map.key.resolvedUri === segment.key.resolvedUri) {
+        objects.push(segment.map.key);
+      }
+      const keyRequestOptions = merge(xhrOptions, {
+        uri: segment.key.resolvedUri,
+        responseType: 'arraybuffer',
+        requestType: 'segment-key'
+      });
+      const keyRequestCallback = handleKeyResponse(segment, objects, finishProcessingFn);
+      const keyXhr = xhr(keyRequestOptions, keyRequestCallback);
+      activeXhrs.push(keyXhr);
+    } // optionally, request the associated media init segment
+
+    if (segment.map && !segment.map.bytes) {
+      const differentMapKey = segment.map.key && (!segment.key || segment.key.resolvedUri !== segment.map.key.resolvedUri);
+      if (differentMapKey) {
+        const mapKeyRequestOptions = merge(xhrOptions, {
+          uri: segment.map.key.resolvedUri,
+          responseType: 'arraybuffer',
+          requestType: 'segment-key'
+        });
+        const mapKeyRequestCallback = handleKeyResponse(segment, [segment.map.key], finishProcessingFn);
+        const mapKeyXhr = xhr(mapKeyRequestOptions, mapKeyRequestCallback);
+        activeXhrs.push(mapKeyXhr);
+      }
+      const initSegmentOptions = merge(xhrOptions, {
+        uri: segment.map.resolvedUri,
+        responseType: 'arraybuffer',
+        headers: segmentXhrHeaders(segment.map),
+        requestType: 'segment-media-initialization'
+      });
+      const initSegmentRequestCallback = handleInitSegmentResponse({
+        segment,
+        finishProcessingFn
+      });
+      const initSegmentXhr = xhr(initSegmentOptions, initSegmentRequestCallback);
+      activeXhrs.push(initSegmentXhr);
+    }
+    const segmentRequestOptions = merge(xhrOptions, {
+      uri: segment.part && segment.part.resolvedUri || segment.resolvedUri,
+      responseType: 'arraybuffer',
+      headers: segmentXhrHeaders(segment),
+      requestType: 'segment'
+    });
+    const segmentRequestCallback = handleSegmentResponse({
+      segment,
+      finishProcessingFn,
+      responseType: segmentRequestOptions.responseType
+    });
+    const segmentXhr = xhr(segmentRequestOptions, segmentRequestCallback);
+    segmentXhr.addEventListener('progress', handleProgress({
+      segment,
+      progressFn,
+      trackInfoFn,
+      timingInfoFn,
+      videoSegmentTimingInfoFn,
+      audioSegmentTimingInfoFn,
+      id3Fn,
+      captionsFn,
+      isEndOfTimeline,
+      endedTimelineFn,
+      dataFn
+    }));
+    activeXhrs.push(segmentXhr); // since all parts of the request must be considered, but should not make callbacks
+    // multiple times, provide a shared state object
+
+    const loadendState = {};
+    activeXhrs.forEach(activeXhr => {
+      activeXhr.addEventListener('loadend', handleLoadEnd({
+        loadendState,
+        abortFn
+      }));
+    });
+    return () => abortAll(activeXhrs);
+  };
+
+  /**
+   * @file - codecs.js - Handles tasks regarding codec strings such as translating them to
+   * codec strings, or translating codec strings into objects that can be examined.
+   */
+  const logFn$1 = logger('CodecUtils');
+  /**
+   * Returns a set of codec strings parsed from the playlist or the default
+   * codec strings if no codecs were specified in the playlist
+   *
+   * @param {Playlist} media the current media playlist
+   * @return {Object} an object with the video and audio codecs
+   */
+
+  const getCodecs = function (media) {
+    // if the codecs were explicitly specified, use them instead of the
+    // defaults
+    const mediaAttributes = media.attributes || {};
+    if (mediaAttributes.CODECS) {
+      return parseCodecs(mediaAttributes.CODECS);
+    }
+  };
+  const isMaat = (main, media) => {
+    const mediaAttributes = media.attributes || {};
+    return main && main.mediaGroups && main.mediaGroups.AUDIO && mediaAttributes.AUDIO && main.mediaGroups.AUDIO[mediaAttributes.AUDIO];
+  };
+  const isMuxed = (main, media) => {
+    if (!isMaat(main, media)) {
+      return true;
+    }
+    const mediaAttributes = media.attributes || {};
+    const audioGroup = main.mediaGroups.AUDIO[mediaAttributes.AUDIO];
+    for (const groupId in audioGroup) {
+      // If an audio group has a URI (the case for HLS, as HLS will use external playlists),
+      // or there are listed playlists (the case for DASH, as the manifest will have already
+      // provided all of the details necessary to generate the audio playlist, as opposed to
+      // HLS' externally requested playlists), then the content is demuxed.
+      if (!audioGroup[groupId].uri && !audioGroup[groupId].playlists) {
+        return true;
+      }
+    }
+    return false;
+  };
+  const unwrapCodecList = function (codecList) {
+    const codecs = {};
+    codecList.forEach(({
+      mediaType,
+      type,
+      details
+    }) => {
+      codecs[mediaType] = codecs[mediaType] || [];
+      codecs[mediaType].push(translateLegacyCodec(`${type}${details}`));
+    });
+    Object.keys(codecs).forEach(function (mediaType) {
+      if (codecs[mediaType].length > 1) {
+        logFn$1(`multiple ${mediaType} codecs found as attributes: ${codecs[mediaType].join(', ')}. Setting playlist codecs to null so that we wait for mux.js to probe segments for real codecs.`);
+        codecs[mediaType] = null;
+        return;
+      }
+      codecs[mediaType] = codecs[mediaType][0];
+    });
+    return codecs;
+  };
+  const codecCount = function (codecObj) {
+    let count = 0;
+    if (codecObj.audio) {
+      count++;
+    }
+    if (codecObj.video) {
+      count++;
+    }
+    return count;
+  };
+  /**
+   * Calculates the codec strings for a working configuration of
+   * SourceBuffers to play variant streams in a main playlist. If
+   * there is no possible working configuration, an empty object will be
+   * returned.
+   *
+   * @param main {Object} the m3u8 object for the main playlist
+   * @param media {Object} the m3u8 object for the variant playlist
+   * @return {Object} the codec strings.
+   *
+   * @private
+   */
+
+  const codecsForPlaylist = function (main, media) {
+    const mediaAttributes = media.attributes || {};
+    const codecInfo = unwrapCodecList(getCodecs(media) || []); // HLS with multiple-audio tracks must always get an audio codec.
+    // Put another way, there is no way to have a video-only multiple-audio HLS!
+
+    if (isMaat(main, media) && !codecInfo.audio) {
+      if (!isMuxed(main, media)) {
+        // It is possible for codecs to be specified on the audio media group playlist but
+        // not on the rendition playlist. This is mostly the case for DASH, where audio and
+        // video are always separate (and separately specified).
+        const defaultCodecs = unwrapCodecList(codecsFromDefault(main, mediaAttributes.AUDIO) || []);
+        if (defaultCodecs.audio) {
+          codecInfo.audio = defaultCodecs.audio;
+        }
+      }
+    }
+    return codecInfo;
+  };
+  const logFn = logger('PlaylistSelector');
+  const representationToString = function (representation) {
+    if (!representation || !representation.playlist) {
+      return;
+    }
+    const playlist = representation.playlist;
+    return JSON.stringify({
+      id: playlist.id,
+      bandwidth: representation.bandwidth,
+      width: representation.width,
+      height: representation.height,
+      codecs: playlist.attributes && playlist.attributes.CODECS || ''
+    });
+  }; // Utilities
+
+  /**
+   * Returns the CSS value for the specified property on an element
+   * using `getComputedStyle`. Firefox has a long-standing issue where
+   * getComputedStyle() may return null when running in an iframe with
+   * `display: none`.
+   *
+   * @see https://bugzilla.mozilla.org/show_bug.cgi?id=548397
+   * @param {HTMLElement} el the htmlelement to work on
+   * @param {string} the proprety to get the style for
+   */
+
+  const safeGetComputedStyle = function (el, property) {
+    if (!el) {
+      return '';
+    }
+    const result = window.getComputedStyle(el);
+    if (!result) {
+      return '';
+    }
+    return result[property];
+  };
+  /**
+   * Resuable stable sort function
+   *
+   * @param {Playlists} array
+   * @param {Function} sortFn Different comparators
+   * @function stableSort
+   */
+
+  const stableSort = function (array, sortFn) {
+    const newArray = array.slice();
+    array.sort(function (left, right) {
+      const cmp = sortFn(left, right);
+      if (cmp === 0) {
+        return newArray.indexOf(left) - newArray.indexOf(right);
+      }
+      return cmp;
+    });
+  };
+  /**
+   * A comparator function to sort two playlist object by bandwidth.
+   *
+   * @param {Object} left a media playlist object
+   * @param {Object} right a media playlist object
+   * @return {number} Greater than zero if the bandwidth attribute of
+   * left is greater than the corresponding attribute of right. Less
+   * than zero if the bandwidth of right is greater than left and
+   * exactly zero if the two are equal.
+   */
+
+  const comparePlaylistBandwidth = function (left, right) {
+    let leftBandwidth;
+    let rightBandwidth;
+    if (left.attributes.BANDWIDTH) {
+      leftBandwidth = left.attributes.BANDWIDTH;
+    }
+    leftBandwidth = leftBandwidth || window.Number.MAX_VALUE;
+    if (right.attributes.BANDWIDTH) {
+      rightBandwidth = right.attributes.BANDWIDTH;
+    }
+    rightBandwidth = rightBandwidth || window.Number.MAX_VALUE;
+    return leftBandwidth - rightBandwidth;
+  };
+  /**
+   * A comparator function to sort two playlist object by resolution (width).
+   *
+   * @param {Object} left a media playlist object
+   * @param {Object} right a media playlist object
+   * @return {number} Greater than zero if the resolution.width attribute of
+   * left is greater than the corresponding attribute of right. Less
+   * than zero if the resolution.width of right is greater than left and
+   * exactly zero if the two are equal.
+   */
+
+  const comparePlaylistResolution = function (left, right) {
+    let leftWidth;
+    let rightWidth;
+    if (left.attributes.RESOLUTION && left.attributes.RESOLUTION.width) {
+      leftWidth = left.attributes.RESOLUTION.width;
+    }
+    leftWidth = leftWidth || window.Number.MAX_VALUE;
+    if (right.attributes.RESOLUTION && right.attributes.RESOLUTION.width) {
+      rightWidth = right.attributes.RESOLUTION.width;
+    }
+    rightWidth = rightWidth || window.Number.MAX_VALUE; // NOTE - Fallback to bandwidth sort as appropriate in cases where multiple renditions
+    // have the same media dimensions/ resolution
+
+    if (leftWidth === rightWidth && left.attributes.BANDWIDTH && right.attributes.BANDWIDTH) {
+      return left.attributes.BANDWIDTH - right.attributes.BANDWIDTH;
+    }
+    return leftWidth - rightWidth;
+  };
+  /**
+   * Chooses the appropriate media playlist based on bandwidth and player size
+   *
+   * @param {Object} main
+   *        Object representation of the main manifest
+   * @param {number} playerBandwidth
+   *        Current calculated bandwidth of the player
+   * @param {number} playerWidth
+   *        Current width of the player element (should account for the device pixel ratio)
+   * @param {number} playerHeight
+   *        Current height of the player element (should account for the device pixel ratio)
+   * @param {boolean} limitRenditionByPlayerDimensions
+   *        True if the player width and height should be used during the selection, false otherwise
+   * @param {Object} playlistController
+   *        the current playlistController object
+   * @return {Playlist} the highest bitrate playlist less than the
+   * currently detected bandwidth, accounting for some amount of
+   * bandwidth variance
+   */
+
+  let simpleSelector = function (main, playerBandwidth, playerWidth, playerHeight, limitRenditionByPlayerDimensions, playlistController) {
+    // If we end up getting called before `main` is available, exit early
+    if (!main) {
+      return;
+    }
+    const options = {
+      bandwidth: playerBandwidth,
+      width: playerWidth,
+      height: playerHeight,
+      limitRenditionByPlayerDimensions
+    };
+    let playlists = main.playlists; // if playlist is audio only, select between currently active audio group playlists.
+
+    if (Playlist.isAudioOnly(main)) {
+      playlists = playlistController.getAudioTrackPlaylists_(); // add audioOnly to options so that we log audioOnly: true
+      // at the buttom of this function for debugging.
+
+      options.audioOnly = true;
+    } // convert the playlists to an intermediary representation to make comparisons easier
+
+    let sortedPlaylistReps = playlists.map(playlist => {
+      let bandwidth;
+      const width = playlist.attributes && playlist.attributes.RESOLUTION && playlist.attributes.RESOLUTION.width;
+      const height = playlist.attributes && playlist.attributes.RESOLUTION && playlist.attributes.RESOLUTION.height;
+      bandwidth = playlist.attributes && playlist.attributes.BANDWIDTH;
+      bandwidth = bandwidth || window.Number.MAX_VALUE;
+      return {
+        bandwidth,
+        width,
+        height,
+        playlist
+      };
+    });
+    stableSort(sortedPlaylistReps, (left, right) => left.bandwidth - right.bandwidth); // filter out any playlists that have been excluded due to
+    // incompatible configurations
+
+    sortedPlaylistReps = sortedPlaylistReps.filter(rep => !Playlist.isIncompatible(rep.playlist)); // filter out any playlists that have been disabled manually through the representations
+    // api or excluded temporarily due to playback errors.
+
+    let enabledPlaylistReps = sortedPlaylistReps.filter(rep => Playlist.isEnabled(rep.playlist));
+    if (!enabledPlaylistReps.length) {
+      // if there are no enabled playlists, then they have all been excluded or disabled
+      // by the user through the representations api. In this case, ignore exclusion and
+      // fallback to what the user wants by using playlists the user has not disabled.
+      enabledPlaylistReps = sortedPlaylistReps.filter(rep => !Playlist.isDisabled(rep.playlist));
+    } // filter out any variant that has greater effective bitrate
+    // than the current estimated bandwidth
+
+    const bandwidthPlaylistReps = enabledPlaylistReps.filter(rep => rep.bandwidth * Config.BANDWIDTH_VARIANCE < playerBandwidth);
+    let highestRemainingBandwidthRep = bandwidthPlaylistReps[bandwidthPlaylistReps.length - 1]; // get all of the renditions with the same (highest) bandwidth
+    // and then taking the very first element
+
+    const bandwidthBestRep = bandwidthPlaylistReps.filter(rep => rep.bandwidth === highestRemainingBandwidthRep.bandwidth)[0]; // if we're not going to limit renditions by player size, make an early decision.
+
+    if (limitRenditionByPlayerDimensions === false) {
+      const chosenRep = bandwidthBestRep || enabledPlaylistReps[0] || sortedPlaylistReps[0];
+      if (chosenRep && chosenRep.playlist) {
+        let type = 'sortedPlaylistReps';
+        if (bandwidthBestRep) {
+          type = 'bandwidthBestRep';
+        }
+        if (enabledPlaylistReps[0]) {
+          type = 'enabledPlaylistReps';
+        }
+        logFn(`choosing ${representationToString(chosenRep)} using ${type} with options`, options);
+        return chosenRep.playlist;
+      }
+      logFn('could not choose a playlist with options', options);
+      return null;
+    } // filter out playlists without resolution information
+
+    const haveResolution = bandwidthPlaylistReps.filter(rep => rep.width && rep.height); // sort variants by resolution
+
+    stableSort(haveResolution, (left, right) => left.width - right.width); // if we have the exact resolution as the player use it
+
+    const resolutionBestRepList = haveResolution.filter(rep => rep.width === playerWidth && rep.height === playerHeight);
+    highestRemainingBandwidthRep = resolutionBestRepList[resolutionBestRepList.length - 1]; // ensure that we pick the highest bandwidth variant that have exact resolution
+
+    const resolutionBestRep = resolutionBestRepList.filter(rep => rep.bandwidth === highestRemainingBandwidthRep.bandwidth)[0];
+    let resolutionPlusOneList;
+    let resolutionPlusOneSmallest;
+    let resolutionPlusOneRep; // find the smallest variant that is larger than the player
+    // if there is no match of exact resolution
+
+    if (!resolutionBestRep) {
+      resolutionPlusOneList = haveResolution.filter(rep => rep.width > playerWidth || rep.height > playerHeight); // find all the variants have the same smallest resolution
+
+      resolutionPlusOneSmallest = resolutionPlusOneList.filter(rep => rep.width === resolutionPlusOneList[0].width && rep.height === resolutionPlusOneList[0].height); // ensure that we also pick the highest bandwidth variant that
+      // is just-larger-than the video player
+
+      highestRemainingBandwidthRep = resolutionPlusOneSmallest[resolutionPlusOneSmallest.length - 1];
+      resolutionPlusOneRep = resolutionPlusOneSmallest.filter(rep => rep.bandwidth === highestRemainingBandwidthRep.bandwidth)[0];
+    }
+    let leastPixelDiffRep; // If this selector proves to be better than others,
+    // resolutionPlusOneRep and resolutionBestRep and all
+    // the code involving them should be removed.
+
+    if (playlistController.leastPixelDiffSelector) {
+      // find the variant that is closest to the player's pixel size
+      const leastPixelDiffList = haveResolution.map(rep => {
+        rep.pixelDiff = Math.abs(rep.width - playerWidth) + Math.abs(rep.height - playerHeight);
+        return rep;
+      }); // get the highest bandwidth, closest resolution playlist
+
+      stableSort(leastPixelDiffList, (left, right) => {
+        // sort by highest bandwidth if pixelDiff is the same
+        if (left.pixelDiff === right.pixelDiff) {
+          return right.bandwidth - left.bandwidth;
+        }
+        return left.pixelDiff - right.pixelDiff;
+      });
+      leastPixelDiffRep = leastPixelDiffList[0];
+    } // fallback chain of variants
+
+    const chosenRep = leastPixelDiffRep || resolutionPlusOneRep || resolutionBestRep || bandwidthBestRep || enabledPlaylistReps[0] || sortedPlaylistReps[0];
+    if (chosenRep && chosenRep.playlist) {
+      let type = 'sortedPlaylistReps';
+      if (leastPixelDiffRep) {
+        type = 'leastPixelDiffRep';
+      } else if (resolutionPlusOneRep) {
+        type = 'resolutionPlusOneRep';
+      } else if (resolutionBestRep) {
+        type = 'resolutionBestRep';
+      } else if (bandwidthBestRep) {
+        type = 'bandwidthBestRep';
+      } else if (enabledPlaylistReps[0]) {
+        type = 'enabledPlaylistReps';
+      }
+      logFn(`choosing ${representationToString(chosenRep)} using ${type} with options`, options);
+      return chosenRep.playlist;
+    }
+    logFn('could not choose a playlist with options', options);
+    return null;
+  };
+
+  /**
+   * Chooses the appropriate media playlist based on the most recent
+   * bandwidth estimate and the player size.
+   *
+   * Expects to be called within the context of an instance of VhsHandler
+   *
+   * @return {Playlist} the highest bitrate playlist less than the
+   * currently detected bandwidth, accounting for some amount of
+   * bandwidth variance
+   */
+
+  const lastBandwidthSelector = function () {
+    let pixelRatio = this.useDevicePixelRatio ? window.devicePixelRatio || 1 : 1;
+    if (!isNaN(this.customPixelRatio)) {
+      pixelRatio = this.customPixelRatio;
+    }
+    return simpleSelector(this.playlists.main, this.systemBandwidth, parseInt(safeGetComputedStyle(this.tech_.el(), 'width'), 10) * pixelRatio, parseInt(safeGetComputedStyle(this.tech_.el(), 'height'), 10) * pixelRatio, this.limitRenditionByPlayerDimensions, this.playlistController_);
+  };
+  /**
+   * Chooses the appropriate media playlist based on an
+   * exponential-weighted moving average of the bandwidth after
+   * filtering for player size.
+   *
+   * Expects to be called within the context of an instance of VhsHandler
+   *
+   * @param {number} decay - a number between 0 and 1. Higher values of
+   * this parameter will cause previous bandwidth estimates to lose
+   * significance more quickly.
+   * @return {Function} a function which can be invoked to create a new
+   * playlist selector function.
+   * @see https://en.wikipedia.org/wiki/Moving_average#Exponential_moving_average
+   */
+
+  const movingAverageBandwidthSelector = function (decay) {
+    let average = -1;
+    let lastSystemBandwidth = -1;
+    if (decay < 0 || decay > 1) {
+      throw new Error('Moving average bandwidth decay must be between 0 and 1.');
+    }
+    return function () {
+      let pixelRatio = this.useDevicePixelRatio ? window.devicePixelRatio || 1 : 1;
+      if (!isNaN(this.customPixelRatio)) {
+        pixelRatio = this.customPixelRatio;
+      }
+      if (average < 0) {
+        average = this.systemBandwidth;
+        lastSystemBandwidth = this.systemBandwidth;
+      } // stop the average value from decaying for every 250ms
+      // when the systemBandwidth is constant
+      // and
+      // stop average from setting to a very low value when the
+      // systemBandwidth becomes 0 in case of chunk cancellation
+
+      if (this.systemBandwidth > 0 && this.systemBandwidth !== lastSystemBandwidth) {
+        average = decay * this.systemBandwidth + (1 - decay) * average;
+        lastSystemBandwidth = this.systemBandwidth;
+      }
+      return simpleSelector(this.playlists.main, average, parseInt(safeGetComputedStyle(this.tech_.el(), 'width'), 10) * pixelRatio, parseInt(safeGetComputedStyle(this.tech_.el(), 'height'), 10) * pixelRatio, this.limitRenditionByPlayerDimensions, this.playlistController_);
+    };
+  };
+  /**
+   * Chooses the appropriate media playlist based on the potential to rebuffer
+   *
+   * @param {Object} settings
+   *        Object of information required to use this selector
+   * @param {Object} settings.main
+   *        Object representation of the main manifest
+   * @param {number} settings.currentTime
+   *        The current time of the player
+   * @param {number} settings.bandwidth
+   *        Current measured bandwidth
+   * @param {number} settings.duration
+   *        Duration of the media
+   * @param {number} settings.segmentDuration
+   *        Segment duration to be used in round trip time calculations
+   * @param {number} settings.timeUntilRebuffer
+   *        Time left in seconds until the player has to rebuffer
+   * @param {number} settings.currentTimeline
+   *        The current timeline segments are being loaded from
+   * @param {SyncController} settings.syncController
+   *        SyncController for determining if we have a sync point for a given playlist
+   * @return {Object|null}
+   *         {Object} return.playlist
+   *         The highest bandwidth playlist with the least amount of rebuffering
+   *         {Number} return.rebufferingImpact
+   *         The amount of time in seconds switching to this playlist will rebuffer. A
+   *         negative value means that switching will cause zero rebuffering.
+   */
+
+  const minRebufferMaxBandwidthSelector = function (settings) {
+    const {
+      main,
+      currentTime,
+      bandwidth,
+      duration,
+      segmentDuration,
+      timeUntilRebuffer,
+      currentTimeline,
+      syncController
+    } = settings; // filter out any playlists that have been excluded due to
+    // incompatible configurations
+
+    const compatiblePlaylists = main.playlists.filter(playlist => !Playlist.isIncompatible(playlist)); // filter out any playlists that have been disabled manually through the representations
+    // api or excluded temporarily due to playback errors.
+
+    let enabledPlaylists = compatiblePlaylists.filter(Playlist.isEnabled);
+    if (!enabledPlaylists.length) {
+      // if there are no enabled playlists, then they have all been excluded or disabled
+      // by the user through the representations api. In this case, ignore exclusion and
+      // fallback to what the user wants by using playlists the user has not disabled.
+      enabledPlaylists = compatiblePlaylists.filter(playlist => !Playlist.isDisabled(playlist));
+    }
+    const bandwidthPlaylists = enabledPlaylists.filter(Playlist.hasAttribute.bind(null, 'BANDWIDTH'));
+    const rebufferingEstimates = bandwidthPlaylists.map(playlist => {
+      const syncPoint = syncController.getSyncPoint(playlist, duration, currentTimeline, currentTime); // If there is no sync point for this playlist, switching to it will require a
+      // sync request first. This will double the request time
+
+      const numRequests = syncPoint ? 1 : 2;
+      const requestTimeEstimate = Playlist.estimateSegmentRequestTime(segmentDuration, bandwidth, playlist);
+      const rebufferingImpact = requestTimeEstimate * numRequests - timeUntilRebuffer;
+      return {
+        playlist,
+        rebufferingImpact
+      };
+    });
+    const noRebufferingPlaylists = rebufferingEstimates.filter(estimate => estimate.rebufferingImpact <= 0); // Sort by bandwidth DESC
+
+    stableSort(noRebufferingPlaylists, (a, b) => comparePlaylistBandwidth(b.playlist, a.playlist));
+    if (noRebufferingPlaylists.length) {
+      return noRebufferingPlaylists[0];
+    }
+    stableSort(rebufferingEstimates, (a, b) => a.rebufferingImpact - b.rebufferingImpact);
+    return rebufferingEstimates[0] || null;
+  };
+  /**
+   * Chooses the appropriate media playlist, which in this case is the lowest bitrate
+   * one with video.  If no renditions with video exist, return the lowest audio rendition.
+   *
+   * Expects to be called within the context of an instance of VhsHandler
+   *
+   * @return {Object|null}
+   *         {Object} return.playlist
+   *         The lowest bitrate playlist that contains a video codec.  If no such rendition
+   *         exists pick the lowest audio rendition.
+   */
+
+  const lowestBitrateCompatibleVariantSelector = function () {
+    // filter out any playlists that have been excluded due to
+    // incompatible configurations or playback errors
+    const playlists = this.playlists.main.playlists.filter(Playlist.isEnabled); // Sort ascending by bitrate
+
+    stableSort(playlists, (a, b) => comparePlaylistBandwidth(a, b)); // Parse and assume that playlists with no video codec have no video
+    // (this is not necessarily true, although it is generally true).
+    //
+    // If an entire manifest has no valid videos everything will get filtered
+    // out.
+
+    const playlistsWithVideo = playlists.filter(playlist => !!codecsForPlaylist(this.playlists.main, playlist).video);
+    return playlistsWithVideo[0] || null;
+  };
+
+  /**
+   * Combine all segments into a single Uint8Array
+   *
+   * @param {Object} segmentObj
+   * @return {Uint8Array} concatenated bytes
+   * @private
+   */
+  const concatSegments = segmentObj => {
+    let offset = 0;
+    let tempBuffer;
+    if (segmentObj.bytes) {
+      tempBuffer = new Uint8Array(segmentObj.bytes); // combine the individual segments into one large typed-array
+
+      segmentObj.segments.forEach(segment => {
+        tempBuffer.set(segment, offset);
+        offset += segment.byteLength;
+      });
+    }
+    return tempBuffer;
+  };
+  /**
+   * Example:
+   * https://host.com/path1/path2/path3/segment.ts?arg1=val1
+   * -->
+   * path3/segment.ts
+   *
+   * @param resolvedUri
+   * @return {string}
+   */
+
+  function compactSegmentUrlDescription(resolvedUri) {
+    try {
+      return new URL(resolvedUri).pathname.split('/').slice(-2).join('/');
+    } catch (e) {
+      return '';
+    }
+  }
+
+  /**
+   * @file text-tracks.js
+   */
+  /**
+   * Create captions text tracks on video.js if they do not exist
+   *
+   * @param {Object} inbandTextTracks a reference to current inbandTextTracks
+   * @param {Object} tech the video.js tech
+   * @param {Object} captionStream the caption stream to create
+   * @private
+   */
+
+  const createCaptionsTrackIfNotExists = function (inbandTextTracks, tech, captionStream) {
+    if (!inbandTextTracks[captionStream]) {
+      tech.trigger({
+        type: 'usage',
+        name: 'vhs-608'
+      });
+      let instreamId = captionStream; // we need to translate SERVICEn for 708 to how mux.js currently labels them
+
+      if (/^cc708_/.test(captionStream)) {
+        instreamId = 'SERVICE' + captionStream.split('_')[1];
+      }
+      const track = tech.textTracks().getTrackById(instreamId);
+      if (track) {
+        // Resuse an existing track with a CC# id because this was
+        // very likely created by videojs-contrib-hls from information
+        // in the m3u8 for us to use
+        inbandTextTracks[captionStream] = track;
+      } else {
+        // This section gets called when we have caption services that aren't specified in the manifest.
+        // Manifest level caption services are handled in media-groups.js under CLOSED-CAPTIONS.
+        const captionServices = tech.options_.vhs && tech.options_.vhs.captionServices || {};
+        let label = captionStream;
+        let language = captionStream;
+        let def = false;
+        const captionService = captionServices[instreamId];
+        if (captionService) {
+          label = captionService.label;
+          language = captionService.language;
+          def = captionService.default;
+        } // Otherwise, create a track with the default `CC#` label and
+        // without a language
+
+        inbandTextTracks[captionStream] = tech.addRemoteTextTrack({
+          kind: 'captions',
+          id: instreamId,
+          // TODO: investigate why this doesn't seem to turn the caption on by default
+          default: def,
+          label,
+          language
+        }, false).track;
+      }
+    }
+  };
+  /**
+   * Add caption text track data to a source handler given an array of captions
+   *
+   * @param {Object}
+   *   @param {Object} inbandTextTracks the inband text tracks
+   *   @param {number} timestampOffset the timestamp offset of the source buffer
+   *   @param {Array} captionArray an array of caption data
+   * @private
+   */
+
+  const addCaptionData = function ({
+    inbandTextTracks,
+    captionArray,
+    timestampOffset
+  }) {
+    if (!captionArray) {
+      return;
+    }
+    const Cue = window.WebKitDataCue || window.VTTCue;
+    captionArray.forEach(caption => {
+      const track = caption.stream; // in CEA 608 captions, video.js/mux.js sends a content array
+      // with positioning data
+
+      if (caption.content) {
+        caption.content.forEach(value => {
+          const cue = new Cue(caption.startTime + timestampOffset, caption.endTime + timestampOffset, value.text);
+          cue.line = value.line;
+          cue.align = 'left';
+          cue.position = value.position;
+          cue.positionAlign = 'line-left';
+          inbandTextTracks[track].addCue(cue);
+        });
+      } else {
+        // otherwise, a text value with combined captions is sent
+        inbandTextTracks[track].addCue(new Cue(caption.startTime + timestampOffset, caption.endTime + timestampOffset, caption.text));
+      }
+    });
+  };
+  /**
+   * Define properties on a cue for backwards compatability,
+   * but warn the user that the way that they are using it
+   * is depricated and will be removed at a later date.
+   *
+   * @param {Cue} cue the cue to add the properties on
+   * @private
+   */
+
+  const deprecateOldCue = function (cue) {
+    Object.defineProperties(cue.frame, {
+      id: {
+        get() {
+          videojs.log.warn('cue.frame.id is deprecated. Use cue.value.key instead.');
+          return cue.value.key;
+        }
+      },
+      value: {
+        get() {
+          videojs.log.warn('cue.frame.value is deprecated. Use cue.value.data instead.');
+          return cue.value.data;
+        }
+      },
+      privateData: {
+        get() {
+          videojs.log.warn('cue.frame.privateData is deprecated. Use cue.value.data instead.');
+          return cue.value.data;
+        }
+      }
+    });
+  };
+  /**
+   * Add metadata text track data to a source handler given an array of metadata
+   *
+   * @param {Object}
+   *   @param {Object} inbandTextTracks the inband text tracks
+   *   @param {Array} metadataArray an array of meta data
+   *   @param {number} timestampOffset the timestamp offset of the source buffer
+   *   @param {number} videoDuration the duration of the video
+   * @private
+   */
+
+  const addMetadata = ({
+    inbandTextTracks,
+    metadataArray,
+    timestampOffset,
+    videoDuration
+  }) => {
+    if (!metadataArray) {
+      return;
+    }
+    const Cue = window.WebKitDataCue || window.VTTCue;
+    const metadataTrack = inbandTextTracks.metadataTrack_;
+    if (!metadataTrack) {
+      return;
+    }
+    metadataArray.forEach(metadata => {
+      const time = metadata.cueTime + timestampOffset; // if time isn't a finite number between 0 and Infinity, like NaN,
+      // ignore this bit of metadata.
+      // This likely occurs when you have an non-timed ID3 tag like TIT2,
+      // which is the "Title/Songname/Content description" frame
+
+      if (typeof time !== 'number' || window.isNaN(time) || time < 0 || !(time < Infinity)) {
+        return;
+      } // If we have no frames, we can't create a cue.
+
+      if (!metadata.frames || !metadata.frames.length) {
+        return;
+      }
+      metadata.frames.forEach(frame => {
+        const cue = new Cue(time, time, frame.value || frame.url || frame.data || '');
+        cue.frame = frame;
+        cue.value = frame;
+        deprecateOldCue(cue);
+        metadataTrack.addCue(cue);
+      });
+    });
+    if (!metadataTrack.cues || !metadataTrack.cues.length) {
+      return;
+    } // Updating the metadeta cues so that
+    // the endTime of each cue is the startTime of the next cue
+    // the endTime of last cue is the duration of the video
+
+    const cues = metadataTrack.cues;
+    const cuesArray = []; // Create a copy of the TextTrackCueList...
+    // ...disregarding cues with a falsey value
+
+    for (let i = 0; i < cues.length; i++) {
+      if (cues[i]) {
+        cuesArray.push(cues[i]);
+      }
+    } // Group cues by their startTime value
+
+    const cuesGroupedByStartTime = cuesArray.reduce((obj, cue) => {
+      const timeSlot = obj[cue.startTime] || [];
+      timeSlot.push(cue);
+      obj[cue.startTime] = timeSlot;
+      return obj;
+    }, {}); // Sort startTimes by ascending order
+
+    const sortedStartTimes = Object.keys(cuesGroupedByStartTime).sort((a, b) => Number(a) - Number(b)); // Map each cue group's endTime to the next group's startTime
+
+    sortedStartTimes.forEach((startTime, idx) => {
+      const cueGroup = cuesGroupedByStartTime[startTime];
+      const finiteDuration = isFinite(videoDuration) ? videoDuration : startTime;
+      const nextTime = Number(sortedStartTimes[idx + 1]) || finiteDuration; // Map each cue's endTime the next group's startTime
+
+      cueGroup.forEach(cue => {
+        cue.endTime = nextTime;
+      });
+    });
+  }; // object for mapping daterange attributes
+
+  const dateRangeAttr = {
+    id: 'ID',
+    class: 'CLASS',
+    startDate: 'START-DATE',
+    duration: 'DURATION',
+    endDate: 'END-DATE',
+    endOnNext: 'END-ON-NEXT',
+    plannedDuration: 'PLANNED-DURATION',
+    scte35Out: 'SCTE35-OUT',
+    scte35In: 'SCTE35-IN'
+  };
+  const dateRangeKeysToOmit = new Set(['id', 'class', 'startDate', 'duration', 'endDate', 'endOnNext', 'startTime', 'endTime', 'processDateRange']);
+  /**
+   * Add DateRange metadata text track to a source handler given an array of metadata
+   *
+   * @param {Object}
+   *   @param {Object} inbandTextTracks the inband text tracks
+   *   @param {Array} dateRanges parsed media playlist
+   * @private
+   */
+
+  const addDateRangeMetadata = ({
+    inbandTextTracks,
+    dateRanges
+  }) => {
+    const metadataTrack = inbandTextTracks.metadataTrack_;
+    if (!metadataTrack) {
+      return;
+    }
+    const Cue = window.WebKitDataCue || window.VTTCue;
+    dateRanges.forEach(dateRange => {
+      // we generate multiple cues for each date range with different attributes
+      for (const key of Object.keys(dateRange)) {
+        if (dateRangeKeysToOmit.has(key)) {
+          continue;
+        }
+        const cue = new Cue(dateRange.startTime, dateRange.endTime, '');
+        cue.id = dateRange.id;
+        cue.type = 'com.apple.quicktime.HLS';
+        cue.value = {
+          key: dateRangeAttr[key],
+          data: dateRange[key]
+        };
+        if (key === 'scte35Out' || key === 'scte35In') {
+          cue.value.data = new Uint8Array(cue.value.data.match(/[\da-f]{2}/gi)).buffer;
+        }
+        metadataTrack.addCue(cue);
+      }
+      dateRange.processDateRange();
+    });
+  };
+  /**
+   * Create metadata text track on video.js if it does not exist
+   *
+   * @param {Object} inbandTextTracks a reference to current inbandTextTracks
+   * @param {string} dispatchType the inband metadata track dispatch type
+   * @param {Object} tech the video.js tech
+   * @private
+   */
+
+  const createMetadataTrackIfNotExists = (inbandTextTracks, dispatchType, tech) => {
+    if (inbandTextTracks.metadataTrack_) {
+      return;
+    }
+    inbandTextTracks.metadataTrack_ = tech.addRemoteTextTrack({
+      kind: 'metadata',
+      label: 'Timed Metadata'
+    }, false).track;
+    if (!videojs.browser.IS_ANY_SAFARI) {
+      inbandTextTracks.metadataTrack_.inBandMetadataTrackDispatchType = dispatchType;
+    }
+  };
+  /**
+   * Remove cues from a track on video.js.
+   *
+   * @param {Double} start start of where we should remove the cue
+   * @param {Double} end end of where the we should remove the cue
+   * @param {Object} track the text track to remove the cues from
+   * @private
+   */
+
+  const removeCuesFromTrack = function (start, end, track) {
+    let i;
+    let cue;
+    if (!track) {
+      return;
+    }
+    if (!track.cues) {
+      return;
+    }
+    i = track.cues.length;
+    while (i--) {
+      cue = track.cues[i]; // Remove any cue within the provided start and end time
+
+      if (cue.startTime >= start && cue.endTime <= end) {
+        track.removeCue(cue);
+      }
+    }
+  };
+  /**
+   * Remove duplicate cues from a track on video.js (a cue is considered a
+   * duplicate if it has the same time interval and text as another)
+   *
+   * @param {Object} track the text track to remove the duplicate cues from
+   * @private
+   */
+
+  const removeDuplicateCuesFromTrack = function (track) {
+    const cues = track.cues;
+    if (!cues) {
+      return;
+    }
+    const uniqueCues = {};
+    for (let i = cues.length - 1; i >= 0; i--) {
+      const cue = cues[i];
+      const cueKey = `${cue.startTime}-${cue.endTime}-${cue.text}`;
+      if (uniqueCues[cueKey]) {
+        track.removeCue(cue);
+      } else {
+        uniqueCues[cueKey] = cue;
+      }
+    }
+  };
+
+  /**
+   * Returns a list of gops in the buffer that have a pts value of 3 seconds or more in
+   * front of current time.
+   *
+   * @param {Array} buffer
+   *        The current buffer of gop information
+   * @param {number} currentTime
+   *        The current time
+   * @param {Double} mapping
+   *        Offset to map display time to stream presentation time
+   * @return {Array}
+   *         List of gops considered safe to append over
+   */
+
+  const gopsSafeToAlignWith = (buffer, currentTime, mapping) => {
+    if (typeof currentTime === 'undefined' || currentTime === null || !buffer.length) {
+      return [];
+    } // pts value for current time + 3 seconds to give a bit more wiggle room
+
+    const currentTimePts = Math.ceil((currentTime - mapping + 3) * clock_1);
+    let i;
+    for (i = 0; i < buffer.length; i++) {
+      if (buffer[i].pts > currentTimePts) {
+        break;
+      }
+    }
+    return buffer.slice(i);
+  };
+  /**
+   * Appends gop information (timing and byteLength) received by the transmuxer for the
+   * gops appended in the last call to appendBuffer
+   *
+   * @param {Array} buffer
+   *        The current buffer of gop information
+   * @param {Array} gops
+   *        List of new gop information
+   * @param {boolean} replace
+   *        If true, replace the buffer with the new gop information. If false, append the
+   *        new gop information to the buffer in the right location of time.
+   * @return {Array}
+   *         Updated list of gop information
+   */
+
+  const updateGopBuffer = (buffer, gops, replace) => {
+    if (!gops.length) {
+      return buffer;
+    }
+    if (replace) {
+      // If we are in safe append mode, then completely overwrite the gop buffer
+      // with the most recent appeneded data. This will make sure that when appending
+      // future segments, we only try to align with gops that are both ahead of current
+      // time and in the last segment appended.
+      return gops.slice();
+    }
+    const start = gops[0].pts;
+    let i = 0;
+    for (i; i < buffer.length; i++) {
+      if (buffer[i].pts >= start) {
+        break;
+      }
+    }
+    return buffer.slice(0, i).concat(gops);
+  };
+  /**
+   * Removes gop information in buffer that overlaps with provided start and end
+   *
+   * @param {Array} buffer
+   *        The current buffer of gop information
+   * @param {Double} start
+   *        position to start the remove at
+   * @param {Double} end
+   *        position to end the remove at
+   * @param {Double} mapping
+   *        Offset to map display time to stream presentation time
+   */
+
+  const removeGopBuffer = (buffer, start, end, mapping) => {
+    const startPts = Math.ceil((start - mapping) * clock_1);
+    const endPts = Math.ceil((end - mapping) * clock_1);
+    const updatedBuffer = buffer.slice();
+    let i = buffer.length;
+    while (i--) {
+      if (buffer[i].pts <= endPts) {
+        break;
+      }
+    }
+    if (i === -1) {
+      // no removal because end of remove range is before start of buffer
+      return updatedBuffer;
+    }
+    let j = i + 1;
+    while (j--) {
+      if (buffer[j].pts <= startPts) {
+        break;
+      }
+    } // clamp remove range start to 0 index
+
+    j = Math.max(j, 0);
+    updatedBuffer.splice(j, i - j + 1);
+    return updatedBuffer;
+  };
+  const shallowEqual = function (a, b) {
+    // if both are undefined
+    // or one or the other is undefined
+    // they are not equal
+    if (!a && !b || !a && b || a && !b) {
+      return false;
+    } // they are the same object and thus, equal
+
+    if (a === b) {
+      return true;
+    } // sort keys so we can make sure they have
+    // all the same keys later.
+
+    const akeys = Object.keys(a).sort();
+    const bkeys = Object.keys(b).sort(); // different number of keys, not equal
+
+    if (akeys.length !== bkeys.length) {
+      return false;
+    }
+    for (let i = 0; i < akeys.length; i++) {
+      const key = akeys[i]; // different sorted keys, not equal
+
+      if (key !== bkeys[i]) {
+        return false;
+      } // different values, not equal
+
+      if (a[key] !== b[key]) {
+        return false;
+      }
+    }
+    return true;
+  };
+
+  // https://www.w3.org/TR/WebIDL-1/#quotaexceedederror
+  const QUOTA_EXCEEDED_ERR = 22;
+
+  /**
+   * The segment loader has no recourse except to fetch a segment in the
+   * current playlist and use the internal timestamps in that segment to
+   * generate a syncPoint. This function returns a good candidate index
+   * for that process.
+   *
+   * @param {Array} segments - the segments array from a playlist.
+   * @return {number} An index of a segment from the playlist to load
+   */
+
+  const getSyncSegmentCandidate = function (currentTimeline, segments, targetTime) {
+    segments = segments || [];
+    const timelineSegments = [];
+    let time = 0;
+    for (let i = 0; i < segments.length; i++) {
+      const segment = segments[i];
+      if (currentTimeline === segment.timeline) {
+        timelineSegments.push(i);
+        time += segment.duration;
+        if (time > targetTime) {
+          return i;
+        }
+      }
+    }
+    if (timelineSegments.length === 0) {
+      return 0;
+    } // default to the last timeline segment
+
+    return timelineSegments[timelineSegments.length - 1];
+  }; // In the event of a quota exceeded error, keep at least one second of back buffer. This
+  // number was arbitrarily chosen and may be updated in the future, but seemed reasonable
+  // as a start to prevent any potential issues with removing content too close to the
+  // playhead.
+
+  const MIN_BACK_BUFFER = 1; // in ms
+
+  const CHECK_BUFFER_DELAY = 500;
+  const finite = num => typeof num === 'number' && isFinite(num); // With most content hovering around 30fps, if a segment has a duration less than a half
+  // frame at 30fps or one frame at 60fps, the bandwidth and throughput calculations will
+  // not accurately reflect the rest of the content.
+
+  const MIN_SEGMENT_DURATION_TO_SAVE_STATS = 1 / 60;
+  const illegalMediaSwitch = (loaderType, startingMedia, trackInfo) => {
+    // Although these checks should most likely cover non 'main' types, for now it narrows
+    // the scope of our checks.
+    if (loaderType !== 'main' || !startingMedia || !trackInfo) {
+      return null;
+    }
+    if (!trackInfo.hasAudio && !trackInfo.hasVideo) {
+      return 'Neither audio nor video found in segment.';
+    }
+    if (startingMedia.hasVideo && !trackInfo.hasVideo) {
+      return 'Only audio found in segment when we expected video.' + ' We can\'t switch to audio only from a stream that had video.' + ' To get rid of this message, please add codec information to the manifest.';
+    }
+    if (!startingMedia.hasVideo && trackInfo.hasVideo) {
+      return 'Video found in segment when we expected only audio.' + ' We can\'t switch to a stream with video from an audio only stream.' + ' To get rid of this message, please add codec information to the manifest.';
+    }
+    return null;
+  };
+  /**
+   * Calculates a time value that is safe to remove from the back buffer without interrupting
+   * playback.
+   *
+   * @param {TimeRange} seekable
+   *        The current seekable range
+   * @param {number} currentTime
+   *        The current time of the player
+   * @param {number} targetDuration
+   *        The target duration of the current playlist
+   * @return {number}
+   *         Time that is safe to remove from the back buffer without interrupting playback
+   */
+
+  const safeBackBufferTrimTime = (seekable, currentTime, targetDuration) => {
+    // 30 seconds before the playhead provides a safe default for trimming.
+    //
+    // Choosing a reasonable default is particularly important for high bitrate content and
+    // VOD videos/live streams with large windows, as the buffer may end up overfilled and
+    // throw an APPEND_BUFFER_ERR.
+    let trimTime = currentTime - Config.BACK_BUFFER_LENGTH;
+    if (seekable.length) {
+      // Some live playlists may have a shorter window of content than the full allowed back
+      // buffer. For these playlists, don't save content that's no longer within the window.
+      trimTime = Math.max(trimTime, seekable.start(0));
+    } // Don't remove within target duration of the current time to avoid the possibility of
+    // removing the GOP currently being played, as removing it can cause playback stalls.
+
+    const maxTrimTime = currentTime - targetDuration;
+    return Math.min(maxTrimTime, trimTime);
+  };
+  const segmentInfoString = segmentInfo => {
+    const {
+      startOfSegment,
+      duration,
+      segment,
+      part,
+      playlist: {
+        mediaSequence: seq,
+        id,
+        segments = []
+      },
+      mediaIndex: index,
+      partIndex,
+      timeline
+    } = segmentInfo;
+    const segmentLen = segments.length - 1;
+    let selection = 'mediaIndex/partIndex increment';
+    if (segmentInfo.getMediaInfoForTime) {
+      selection = `getMediaInfoForTime (${segmentInfo.getMediaInfoForTime})`;
+    } else if (segmentInfo.isSyncRequest) {
+      selection = 'getSyncSegmentCandidate (isSyncRequest)';
+    }
+    if (segmentInfo.independent) {
+      selection += ` with independent ${segmentInfo.independent}`;
+    }
+    const hasPartIndex = typeof partIndex === 'number';
+    const name = segmentInfo.segment.uri ? 'segment' : 'pre-segment';
+    const zeroBasedPartCount = hasPartIndex ? getKnownPartCount({
+      preloadSegment: segment
+    }) - 1 : 0;
+    return `${name} [${seq + index}/${seq + segmentLen}]` + (hasPartIndex ? ` part [${partIndex}/${zeroBasedPartCount}]` : '') + ` segment start/end [${segment.start} => ${segment.end}]` + (hasPartIndex ? ` part start/end [${part.start} => ${part.end}]` : '') + ` startOfSegment [${startOfSegment}]` + ` duration [${duration}]` + ` timeline [${timeline}]` + ` selected by [${selection}]` + ` playlist [${id}]`;
+  };
+  const timingInfoPropertyForMedia = mediaType => `${mediaType}TimingInfo`;
+  /**
+   * Returns the timestamp offset to use for the segment.
+   *
+   * @param {number} segmentTimeline
+   *        The timeline of the segment
+   * @param {number} currentTimeline
+   *        The timeline currently being followed by the loader
+   * @param {number} startOfSegment
+   *        The estimated segment start
+   * @param {TimeRange[]} buffered
+   *        The loader's buffer
+   * @param {boolean} overrideCheck
+   *        If true, no checks are made to see if the timestamp offset value should be set,
+   *        but sets it directly to a value.
+   *
+   * @return {number|null}
+   *         Either a number representing a new timestamp offset, or null if the segment is
+   *         part of the same timeline
+   */
+
+  const timestampOffsetForSegment = ({
+    segmentTimeline,
+    currentTimeline,
+    startOfSegment,
+    buffered,
+    overrideCheck
+  }) => {
+    // Check to see if we are crossing a discontinuity to see if we need to set the
+    // timestamp offset on the transmuxer and source buffer.
+    //
+    // Previously, we changed the timestampOffset if the start of this segment was less than
+    // the currently set timestampOffset, but this isn't desirable as it can produce bad
+    // behavior, especially around long running live streams.
+    if (!overrideCheck && segmentTimeline === currentTimeline) {
+      return null;
+    } // When changing renditions, it's possible to request a segment on an older timeline. For
+    // instance, given two renditions with the following:
+    //
+    // #EXTINF:10
+    // segment1
+    // #EXT-X-DISCONTINUITY
+    // #EXTINF:10
+    // segment2
+    // #EXTINF:10
+    // segment3
+    //
+    // And the current player state:
+    //
+    // current time: 8
+    // buffer: 0 => 20
+    //
+    // The next segment on the current rendition would be segment3, filling the buffer from
+    // 20s onwards. However, if a rendition switch happens after segment2 was requested,
+    // then the next segment to be requested will be segment1 from the new rendition in
+    // order to fill time 8 and onwards. Using the buffered end would result in repeated
+    // content (since it would position segment1 of the new rendition starting at 20s). This
+    // case can be identified when the new segment's timeline is a prior value. Instead of
+    // using the buffered end, the startOfSegment can be used, which, hopefully, will be
+    // more accurate to the actual start time of the segment.
+
+    if (segmentTimeline < currentTimeline) {
+      return startOfSegment;
+    } // segmentInfo.startOfSegment used to be used as the timestamp offset, however, that
+    // value uses the end of the last segment if it is available. While this value
+    // should often be correct, it's better to rely on the buffered end, as the new
+    // content post discontinuity should line up with the buffered end as if it were
+    // time 0 for the new content.
+
+    return buffered.length ? buffered.end(buffered.length - 1) : startOfSegment;
+  };
+  /**
+   * Returns whether or not the loader should wait for a timeline change from the timeline
+   * change controller before processing the segment.
+   *
+   * Primary timing in VHS goes by video. This is different from most media players, as
+   * audio is more often used as the primary timing source. For the foreseeable future, VHS
+   * will continue to use video as the primary timing source, due to the current logic and
+   * expectations built around it.
+
+   * Since the timing follows video, in order to maintain sync, the video loader is
+   * responsible for setting both audio and video source buffer timestamp offsets.
+   *
+   * Setting different values for audio and video source buffers could lead to
+   * desyncing. The following examples demonstrate some of the situations where this
+   * distinction is important. Note that all of these cases involve demuxed content. When
+   * content is muxed, the audio and video are packaged together, therefore syncing
+   * separate media playlists is not an issue.
+   *
+   * CASE 1: Audio prepares to load a new timeline before video:
+   *
+   * Timeline:       0                 1
+   * Audio Segments: 0 1 2 3 4 5 DISCO 6 7 8 9
+   * Audio Loader:                     ^
+   * Video Segments: 0 1 2 3 4 5 DISCO 6 7 8 9
+   * Video Loader              ^
+   *
+   * In the above example, the audio loader is preparing to load the 6th segment, the first
+   * after a discontinuity, while the video loader is still loading the 5th segment, before
+   * the discontinuity.
+   *
+   * If the audio loader goes ahead and loads and appends the 6th segment before the video
+   * loader crosses the discontinuity, then when appended, the 6th audio segment will use
+   * the timestamp offset from timeline 0. This will likely lead to desyncing. In addition,
+   * the audio loader must provide the audioAppendStart value to trim the content in the
+   * transmuxer, and that value relies on the audio timestamp offset. Since the audio
+   * timestamp offset is set by the video (main) loader, the audio loader shouldn't load the
+   * segment until that value is provided.
+   *
+   * CASE 2: Video prepares to load a new timeline before audio:
+   *
+   * Timeline:       0                 1
+   * Audio Segments: 0 1 2 3 4 5 DISCO 6 7 8 9
+   * Audio Loader:             ^
+   * Video Segments: 0 1 2 3 4 5 DISCO 6 7 8 9
+   * Video Loader                      ^
+   *
+   * In the above example, the video loader is preparing to load the 6th segment, the first
+   * after a discontinuity, while the audio loader is still loading the 5th segment, before
+   * the discontinuity.
+   *
+   * If the video loader goes ahead and loads and appends the 6th segment, then once the
+   * segment is loaded and processed, both the video and audio timestamp offsets will be
+   * set, since video is used as the primary timing source. This is to ensure content lines
+   * up appropriately, as any modifications to the video timing are reflected by audio when
+   * the video loader sets the audio and video timestamp offsets to the same value. However,
+   * setting the timestamp offset for audio before audio has had a chance to change
+   * timelines will likely lead to desyncing, as the audio loader will append segment 5 with
+   * a timestamp intended to apply to segments from timeline 1 rather than timeline 0.
+   *
+   * CASE 3: When seeking, audio prepares to load a new timeline before video
+   *
+   * Timeline:       0                 1
+   * Audio Segments: 0 1 2 3 4 5 DISCO 6 7 8 9
+   * Audio Loader:           ^
+   * Video Segments: 0 1 2 3 4 5 DISCO 6 7 8 9
+   * Video Loader            ^
+   *
+   * In the above example, both audio and video loaders are loading segments from timeline
+   * 0, but imagine that the seek originated from timeline 1.
+   *
+   * When seeking to a new timeline, the timestamp offset will be set based on the expected
+   * segment start of the loaded video segment. In order to maintain sync, the audio loader
+   * must wait for the video loader to load its segment and update both the audio and video
+   * timestamp offsets before it may load and append its own segment. This is the case
+   * whether the seek results in a mismatched segment request (e.g., the audio loader
+   * chooses to load segment 3 and the video loader chooses to load segment 4) or the
+   * loaders choose to load the same segment index from each playlist, as the segments may
+   * not be aligned perfectly, even for matching segment indexes.
+   *
+   * @param {Object} timelinechangeController
+   * @param {number} currentTimeline
+   *        The timeline currently being followed by the loader
+   * @param {number} segmentTimeline
+   *        The timeline of the segment being loaded
+   * @param {('main'|'audio')} loaderType
+   *        The loader type
+   * @param {boolean} audioDisabled
+   *        Whether the audio is disabled for the loader. This should only be true when the
+   *        loader may have muxed audio in its segment, but should not append it, e.g., for
+   *        the main loader when an alternate audio playlist is active.
+   *
+   * @return {boolean}
+   *         Whether the loader should wait for a timeline change from the timeline change
+   *         controller before processing the segment
+   */
+
+  const shouldWaitForTimelineChange = ({
+    timelineChangeController,
+    currentTimeline,
+    segmentTimeline,
+    loaderType,
+    audioDisabled
+  }) => {
+    if (currentTimeline === segmentTimeline) {
+      return false;
+    }
+    if (loaderType === 'audio') {
+      const lastMainTimelineChange = timelineChangeController.lastTimelineChange({
+        type: 'main'
+      }); // Audio loader should wait if:
+      //
+      // * main hasn't had a timeline change yet (thus has not loaded its first segment)
+      // * main hasn't yet changed to the timeline audio is looking to load
+
+      return !lastMainTimelineChange || lastMainTimelineChange.to !== segmentTimeline;
+    } // The main loader only needs to wait for timeline changes if there's demuxed audio.
+    // Otherwise, there's nothing to wait for, since audio would be muxed into the main
+    // loader's segments (or the content is audio/video only and handled by the main
+    // loader).
+
+    if (loaderType === 'main' && audioDisabled) {
+      const pendingAudioTimelineChange = timelineChangeController.pendingTimelineChange({
+        type: 'audio'
+      }); // Main loader should wait for the audio loader if audio is not pending a timeline
+      // change to the current timeline.
+      //
+      // Since the main loader is responsible for setting the timestamp offset for both
+      // audio and video, the main loader must wait for audio to be about to change to its
+      // timeline before setting the offset, otherwise, if audio is behind in loading,
+      // segments from the previous timeline would be adjusted by the new timestamp offset.
+      //
+      // This requirement means that video will not cross a timeline until the audio is
+      // about to cross to it, so that way audio and video will always cross the timeline
+      // together.
+      //
+      // In addition to normal timeline changes, these rules also apply to the start of a
+      // stream (going from a non-existent timeline, -1, to timeline 0). It's important
+      // that these rules apply to the first timeline change because if they did not, it's
+      // possible that the main loader will cross two timelines before the audio loader has
+      // crossed one. Logic may be implemented to handle the startup as a special case, but
+      // it's easier to simply treat all timeline changes the same.
+
+      if (pendingAudioTimelineChange && pendingAudioTimelineChange.to === segmentTimeline) {
+        return false;
+      }
+      return true;
+    }
+    return false;
+  };
+  const mediaDuration = timingInfos => {
+    let maxDuration = 0;
+    ['video', 'audio'].forEach(function (type) {
+      const typeTimingInfo = timingInfos[`${type}TimingInfo`];
+      if (!typeTimingInfo) {
+        return;
+      }
+      const {
+        start,
+        end
+      } = typeTimingInfo;
+      let duration;
+      if (typeof start === 'bigint' || typeof end === 'bigint') {
+        duration = window.BigInt(end) - window.BigInt(start);
+      } else if (typeof start === 'number' && typeof end === 'number') {
+        duration = end - start;
+      }
+      if (typeof duration !== 'undefined' && duration > maxDuration) {
+        maxDuration = duration;
+      }
+    }); // convert back to a number if it is lower than MAX_SAFE_INTEGER
+    // as we only need BigInt when we are above that.
+
+    if (typeof maxDuration === 'bigint' && maxDuration < Number.MAX_SAFE_INTEGER) {
+      maxDuration = Number(maxDuration);
+    }
+    return maxDuration;
+  };
+  const segmentTooLong = ({
+    segmentDuration,
+    maxDuration
+  }) => {
+    // 0 duration segments are most likely due to metadata only segments or a lack of
+    // information.
+    if (!segmentDuration) {
+      return false;
+    } // For HLS:
+    //
+    // https://tools.ietf.org/html/draft-pantos-http-live-streaming-23#section-4.3.3.1
+    // The EXTINF duration of each Media Segment in the Playlist
+    // file, when rounded to the nearest integer, MUST be less than or equal
+    // to the target duration; longer segments can trigger playback stalls
+    // or other errors.
+    //
+    // For DASH, the mpd-parser uses the largest reported segment duration as the target
+    // duration. Although that reported duration is occasionally approximate (i.e., not
+    // exact), a strict check may report that a segment is too long more often in DASH.
+
+    return Math.round(segmentDuration) > maxDuration + TIME_FUDGE_FACTOR;
+  };
+  const getTroublesomeSegmentDurationMessage = (segmentInfo, sourceType) => {
+    // Right now we aren't following DASH's timing model exactly, so only perform
+    // this check for HLS content.
+    if (sourceType !== 'hls') {
+      return null;
+    }
+    const segmentDuration = mediaDuration({
+      audioTimingInfo: segmentInfo.audioTimingInfo,
+      videoTimingInfo: segmentInfo.videoTimingInfo
+    }); // Don't report if we lack information.
+    //
+    // If the segment has a duration of 0 it is either a lack of information or a
+    // metadata only segment and shouldn't be reported here.
+
+    if (!segmentDuration) {
+      return null;
+    }
+    const targetDuration = segmentInfo.playlist.targetDuration;
+    const isSegmentWayTooLong = segmentTooLong({
+      segmentDuration,
+      maxDuration: targetDuration * 2
+    });
+    const isSegmentSlightlyTooLong = segmentTooLong({
+      segmentDuration,
+      maxDuration: targetDuration
+    });
+    const segmentTooLongMessage = `Segment with index ${segmentInfo.mediaIndex} ` + `from playlist ${segmentInfo.playlist.id} ` + `has a duration of ${segmentDuration} ` + `when the reported duration is ${segmentInfo.duration} ` + `and the target duration is ${targetDuration}. ` + 'For HLS content, a duration in excess of the target duration may result in ' + 'playback issues. See the HLS specification section on EXT-X-TARGETDURATION for ' + 'more details: ' + 'https://tools.ietf.org/html/draft-pantos-http-live-streaming-23#section-4.3.3.1';
+    if (isSegmentWayTooLong || isSegmentSlightlyTooLong) {
+      return {
+        severity: isSegmentWayTooLong ? 'warn' : 'info',
+        message: segmentTooLongMessage
+      };
+    }
+    return null;
+  };
+  /**
+   * An object that manages segment loading and appending.
+   *
+   * @class SegmentLoader
+   * @param {Object} options required and optional options
+   * @extends videojs.EventTarget
+   */
+
+  class SegmentLoader extends videojs.EventTarget {
+    constructor(settings, options = {}) {
+      super(); // check pre-conditions
+
+      if (!settings) {
+        throw new TypeError('Initialization settings are required');
+      }
+      if (typeof settings.currentTime !== 'function') {
+        throw new TypeError('No currentTime getter specified');
+      }
+      if (!settings.mediaSource) {
+        throw new TypeError('No MediaSource specified');
+      } // public properties
+
+      this.bandwidth = settings.bandwidth;
+      this.throughput = {
+        rate: 0,
+        count: 0
+      };
+      this.roundTrip = NaN;
+      this.resetStats_();
+      this.mediaIndex = null;
+      this.partIndex = null; // private settings
+
+      this.hasPlayed_ = settings.hasPlayed;
+      this.currentTime_ = settings.currentTime;
+      this.seekable_ = settings.seekable;
+      this.seeking_ = settings.seeking;
+      this.duration_ = settings.duration;
+      this.mediaSource_ = settings.mediaSource;
+      this.vhs_ = settings.vhs;
+      this.loaderType_ = settings.loaderType;
+      this.currentMediaInfo_ = void 0;
+      this.startingMediaInfo_ = void 0;
+      this.segmentMetadataTrack_ = settings.segmentMetadataTrack;
+      this.goalBufferLength_ = settings.goalBufferLength;
+      this.sourceType_ = settings.sourceType;
+      this.sourceUpdater_ = settings.sourceUpdater;
+      this.inbandTextTracks_ = settings.inbandTextTracks;
+      this.state_ = 'INIT';
+      this.timelineChangeController_ = settings.timelineChangeController;
+      this.shouldSaveSegmentTimingInfo_ = true;
+      this.parse708captions_ = settings.parse708captions;
+      this.useDtsForTimestampOffset_ = settings.useDtsForTimestampOffset;
+      this.captionServices_ = settings.captionServices;
+      this.exactManifestTimings = settings.exactManifestTimings;
+      this.addMetadataToTextTrack = settings.addMetadataToTextTrack; // private instance variables
+
+      this.checkBufferTimeout_ = null;
+      this.error_ = void 0;
+      this.currentTimeline_ = -1;
+      this.shouldForceTimestampOffsetAfterResync_ = false;
+      this.pendingSegment_ = null;
+      this.xhrOptions_ = null;
+      this.pendingSegments_ = [];
+      this.audioDisabled_ = false;
+      this.isPendingTimestampOffset_ = false; // TODO possibly move gopBuffer and timeMapping info to a separate controller
+
+      this.gopBuffer_ = [];
+      this.timeMapping_ = 0;
+      this.safeAppend_ = false;
+      this.appendInitSegment_ = {
+        audio: true,
+        video: true
+      };
+      this.playlistOfLastInitSegment_ = {
+        audio: null,
+        video: null
+      };
+      this.callQueue_ = []; // If the segment loader prepares to load a segment, but does not have enough
+      // information yet to start the loading process (e.g., if the audio loader wants to
+      // load a segment from the next timeline but the main loader hasn't yet crossed that
+      // timeline), then the load call will be added to the queue until it is ready to be
+      // processed.
+
+      this.loadQueue_ = [];
+      this.metadataQueue_ = {
+        id3: [],
+        caption: []
+      };
+      this.waitingOnRemove_ = false;
+      this.quotaExceededErrorRetryTimeout_ = null; // Fragmented mp4 playback
+
+      this.activeInitSegmentId_ = null;
+      this.initSegments_ = {}; // HLSe playback
+
+      this.cacheEncryptionKeys_ = settings.cacheEncryptionKeys;
+      this.keyCache_ = {};
+      this.decrypter_ = settings.decrypter; // Manages the tracking and generation of sync-points, mappings
+      // between a time in the display time and a segment index within
+      // a playlist
+
+      this.syncController_ = settings.syncController;
+      this.syncPoint_ = {
+        segmentIndex: 0,
+        time: 0
+      };
+      this.transmuxer_ = this.createTransmuxer_();
+      this.triggerSyncInfoUpdate_ = () => this.trigger('syncinfoupdate');
+      this.syncController_.on('syncinfoupdate', this.triggerSyncInfoUpdate_);
+      this.mediaSource_.addEventListener('sourceopen', () => {
+        if (!this.isEndOfStream_()) {
+          this.ended_ = false;
+        }
+      }); // ...for determining the fetch location
+
+      this.fetchAtBuffer_ = false;
+      this.logger_ = logger(`SegmentLoader[${this.loaderType_}]`);
+      Object.defineProperty(this, 'state', {
+        get() {
+          return this.state_;
+        },
+        set(newState) {
+          if (newState !== this.state_) {
+            this.logger_(`${this.state_} -> ${newState}`);
+            this.state_ = newState;
+            this.trigger('statechange');
+          }
+        }
+      });
+      this.sourceUpdater_.on('ready', () => {
+        if (this.hasEnoughInfoToAppend_()) {
+          this.processCallQueue_();
+        }
+      }); // Only the main loader needs to listen for pending timeline changes, as the main
+      // loader should wait for audio to be ready to change its timeline so that both main
+      // and audio timelines change together. For more details, see the
+      // shouldWaitForTimelineChange function.
+
+      if (this.loaderType_ === 'main') {
+        this.timelineChangeController_.on('pendingtimelinechange', () => {
+          if (this.hasEnoughInfoToAppend_()) {
+            this.processCallQueue_();
+          }
+        });
+      } // The main loader only listens on pending timeline changes, but the audio loader,
+      // since its loads follow main, needs to listen on timeline changes. For more details,
+      // see the shouldWaitForTimelineChange function.
+
+      if (this.loaderType_ === 'audio') {
+        this.timelineChangeController_.on('timelinechange', () => {
+          if (this.hasEnoughInfoToLoad_()) {
+            this.processLoadQueue_();
+          }
+          if (this.hasEnoughInfoToAppend_()) {
+            this.processCallQueue_();
+          }
+        });
+      }
+    }
+    /**
+     * TODO: Current sync controller consists of many hls-specific strategies
+     * media sequence sync is also hls-specific, and we would like to be protocol-agnostic on this level
+     * this should be a part of the sync-controller and sync controller should expect different strategy list based on the protocol.
+     *
+     * @return {MediaSequenceSync|null}
+     * @private
+     */
+
+    get mediaSequenceSync_() {
+      return this.syncController_.getMediaSequenceSync(this.loaderType_);
+    }
+    createTransmuxer_() {
+      return segmentTransmuxer.createTransmuxer({
+        remux: false,
+        alignGopsAtEnd: this.safeAppend_,
+        keepOriginalTimestamps: true,
+        parse708captions: this.parse708captions_,
+        captionServices: this.captionServices_
+      });
+    }
+    /**
+     * reset all of our media stats
+     *
+     * @private
+     */
+
+    resetStats_() {
+      this.mediaBytesTransferred = 0;
+      this.mediaRequests = 0;
+      this.mediaRequestsAborted = 0;
+      this.mediaRequestsTimedout = 0;
+      this.mediaRequestsErrored = 0;
+      this.mediaTransferDuration = 0;
+      this.mediaSecondsLoaded = 0;
+      this.mediaAppends = 0;
+    }
+    /**
+     * dispose of the SegmentLoader and reset to the default state
+     */
+
+    dispose() {
+      this.trigger('dispose');
+      this.state = 'DISPOSED';
+      this.pause();
+      this.abort_();
+      if (this.transmuxer_) {
+        this.transmuxer_.terminate();
+      }
+      this.resetStats_();
+      if (this.checkBufferTimeout_) {
+        window.clearTimeout(this.checkBufferTimeout_);
+      }
+      if (this.syncController_ && this.triggerSyncInfoUpdate_) {
+        this.syncController_.off('syncinfoupdate', this.triggerSyncInfoUpdate_);
+      }
+      this.off();
+    }
+    setAudio(enable) {
+      this.audioDisabled_ = !enable;
+      if (enable) {
+        this.appendInitSegment_.audio = true;
+      } else {
+        // remove current track audio if it gets disabled
+        this.sourceUpdater_.removeAudio(0, this.duration_());
+      }
+    }
+    /**
+     * abort anything that is currently doing on with the SegmentLoader
+     * and reset to a default state
+     */
+
+    abort() {
+      if (this.state !== 'WAITING') {
+        if (this.pendingSegment_) {
+          this.pendingSegment_ = null;
+        }
+        return;
+      }
+      this.abort_(); // We aborted the requests we were waiting on, so reset the loader's state to READY
+      // since we are no longer "waiting" on any requests. XHR callback is not always run
+      // when the request is aborted. This will prevent the loader from being stuck in the
+      // WAITING state indefinitely.
+
+      this.state = 'READY'; // don't wait for buffer check timeouts to begin fetching the
+      // next segment
+
+      if (!this.paused()) {
+        this.monitorBuffer_();
+      }
+    }
+    /**
+     * abort all pending xhr requests and null any pending segements
+     *
+     * @private
+     */
+
+    abort_() {
+      if (this.pendingSegment_ && this.pendingSegment_.abortRequests) {
+        this.pendingSegment_.abortRequests();
+      } // clear out the segment being processed
+
+      this.pendingSegment_ = null;
+      this.callQueue_ = [];
+      this.loadQueue_ = [];
+      this.metadataQueue_.id3 = [];
+      this.metadataQueue_.caption = [];
+      this.timelineChangeController_.clearPendingTimelineChange(this.loaderType_);
+      this.waitingOnRemove_ = false;
+      window.clearTimeout(this.quotaExceededErrorRetryTimeout_);
+      this.quotaExceededErrorRetryTimeout_ = null;
+    }
+    checkForAbort_(requestId) {
+      // If the state is APPENDING, then aborts will not modify the state, meaning the first
+      // callback that happens should reset the state to READY so that loading can continue.
+      if (this.state === 'APPENDING' && !this.pendingSegment_) {
+        this.state = 'READY';
+        return true;
+      }
+      if (!this.pendingSegment_ || this.pendingSegment_.requestId !== requestId) {
+        return true;
+      }
+      return false;
+    }
+    /**
+     * set an error on the segment loader and null out any pending segements
+     *
+     * @param {Error} error the error to set on the SegmentLoader
+     * @return {Error} the error that was set or that is currently set
+     */
+
+    error(error) {
+      if (typeof error !== 'undefined') {
+        this.logger_('error occurred:', error);
+        this.error_ = error;
+      }
+      this.pendingSegment_ = null;
+      return this.error_;
+    }
+    endOfStream() {
+      this.ended_ = true;
+      if (this.transmuxer_) {
+        // need to clear out any cached data to prepare for the new segment
+        segmentTransmuxer.reset(this.transmuxer_);
+      }
+      this.gopBuffer_.length = 0;
+      this.pause();
+      this.trigger('ended');
+    }
+    /**
+     * Indicates which time ranges are buffered
+     *
+     * @return {TimeRange}
+     *         TimeRange object representing the current buffered ranges
+     */
+
+    buffered_() {
+      const trackInfo = this.getMediaInfo_();
+      if (!this.sourceUpdater_ || !trackInfo) {
+        return createTimeRanges();
+      }
+      if (this.loaderType_ === 'main') {
+        const {
+          hasAudio,
+          hasVideo,
+          isMuxed
+        } = trackInfo;
+        if (hasVideo && hasAudio && !this.audioDisabled_ && !isMuxed) {
+          return this.sourceUpdater_.buffered();
+        }
+        if (hasVideo) {
+          return this.sourceUpdater_.videoBuffered();
+        }
+      } // One case that can be ignored for now is audio only with alt audio,
+      // as we don't yet have proper support for that.
+
+      return this.sourceUpdater_.audioBuffered();
+    }
+    /**
+     * Gets and sets init segment for the provided map
+     *
+     * @param {Object} map
+     *        The map object representing the init segment to get or set
+     * @param {boolean=} set
+     *        If true, the init segment for the provided map should be saved
+     * @return {Object}
+     *         map object for desired init segment
+     */
+
+    initSegmentForMap(map, set = false) {
+      if (!map) {
+        return null;
+      }
+      const id = initSegmentId(map);
+      let storedMap = this.initSegments_[id];
+      if (set && !storedMap && map.bytes) {
+        this.initSegments_[id] = storedMap = {
+          resolvedUri: map.resolvedUri,
+          byterange: map.byterange,
+          bytes: map.bytes,
+          tracks: map.tracks,
+          timescales: map.timescales
+        };
+      }
+      return storedMap || map;
+    }
+    /**
+     * Gets and sets key for the provided key
+     *
+     * @param {Object} key
+     *        The key object representing the key to get or set
+     * @param {boolean=} set
+     *        If true, the key for the provided key should be saved
+     * @return {Object}
+     *         Key object for desired key
+     */
+
+    segmentKey(key, set = false) {
+      if (!key) {
+        return null;
+      }
+      const id = segmentKeyId(key);
+      let storedKey = this.keyCache_[id]; // TODO: We should use the HTTP Expires header to invalidate our cache per
+      // https://tools.ietf.org/html/draft-pantos-http-live-streaming-23#section-6.2.3
+
+      if (this.cacheEncryptionKeys_ && set && !storedKey && key.bytes) {
+        this.keyCache_[id] = storedKey = {
+          resolvedUri: key.resolvedUri,
+          bytes: key.bytes
+        };
+      }
+      const result = {
+        resolvedUri: (storedKey || key).resolvedUri
+      };
+      if (storedKey) {
+        result.bytes = storedKey.bytes;
+      }
+      return result;
+    }
+    /**
+     * Returns true if all configuration required for loading is present, otherwise false.
+     *
+     * @return {boolean} True if the all configuration is ready for loading
+     * @private
+     */
+
+    couldBeginLoading_() {
+      return this.playlist_ && !this.paused();
+    }
+    /**
+     * load a playlist and start to fill the buffer
+     */
+
+    load() {
+      // un-pause
+      this.monitorBuffer_(); // if we don't have a playlist yet, keep waiting for one to be
+      // specified
+
+      if (!this.playlist_) {
+        return;
+      } // if all the configuration is ready, initialize and begin loading
+
+      if (this.state === 'INIT' && this.couldBeginLoading_()) {
+        return this.init_();
+      } // if we're in the middle of processing a segment already, don't
+      // kick off an additional segment request
+
+      if (!this.couldBeginLoading_() || this.state !== 'READY' && this.state !== 'INIT') {
+        return;
+      }
+      this.state = 'READY';
+    }
+    /**
+     * Once all the starting parameters have been specified, begin
+     * operation. This method should only be invoked from the INIT
+     * state.
+     *
+     * @private
+     */
+
+    init_() {
+      this.state = 'READY'; // if this is the audio segment loader, and it hasn't been inited before, then any old
+      // audio data from the muxed content should be removed
+
+      this.resetEverything();
+      return this.monitorBuffer_();
+    }
+    /**
+     * set a playlist on the segment loader
+     *
+     * @param {PlaylistLoader} media the playlist to set on the segment loader
+     */
+
+    playlist(newPlaylist, options = {}) {
+      if (!newPlaylist) {
+        return;
+      }
+      const oldPlaylist = this.playlist_;
+      const segmentInfo = this.pendingSegment_;
+      this.playlist_ = newPlaylist;
+      this.xhrOptions_ = options; // when we haven't started playing yet, the start of a live playlist
+      // is always our zero-time so force a sync update each time the playlist
+      // is refreshed from the server
+      //
+      // Use the INIT state to determine if playback has started, as the playlist sync info
+      // should be fixed once requests begin (as sync points are generated based on sync
+      // info), but not before then.
+
+      if (this.state === 'INIT') {
+        newPlaylist.syncInfo = {
+          mediaSequence: newPlaylist.mediaSequence,
+          time: 0
+        }; // Setting the date time mapping means mapping the program date time (if available)
+        // to time 0 on the player's timeline. The playlist's syncInfo serves a similar
+        // purpose, mapping the initial mediaSequence to time zero. Since the syncInfo can
+        // be updated as the playlist is refreshed before the loader starts loading, the
+        // program date time mapping needs to be updated as well.
+        //
+        // This mapping is only done for the main loader because a program date time should
+        // map equivalently between playlists.
+
+        if (this.loaderType_ === 'main') {
+          this.syncController_.setDateTimeMappingForStart(newPlaylist);
+        }
+      }
+      let oldId = null;
+      if (oldPlaylist) {
+        if (oldPlaylist.id) {
+          oldId = oldPlaylist.id;
+        } else if (oldPlaylist.uri) {
+          oldId = oldPlaylist.uri;
+        }
+      }
+      this.logger_(`playlist update [${oldId} => ${newPlaylist.id || newPlaylist.uri}]`);
+      if (this.mediaSequenceSync_) {
+        this.mediaSequenceSync_.update(newPlaylist, this.currentTime_());
+        this.logger_(`Playlist update:
+currentTime: ${this.currentTime_()}
+bufferedEnd: ${lastBufferedEnd(this.buffered_())}
+`, this.mediaSequenceSync_.diagnostics);
+      } // in VOD, this is always a rendition switch (or we updated our syncInfo above)
+      // in LIVE, we always want to update with new playlists (including refreshes)
+
+      this.trigger('syncinfoupdate'); // if we were unpaused but waiting for a playlist, start
+      // buffering now
+
+      if (this.state === 'INIT' && this.couldBeginLoading_()) {
+        return this.init_();
+      }
+      if (!oldPlaylist || oldPlaylist.uri !== newPlaylist.uri) {
+        if (this.mediaIndex !== null) {
+          // we must reset/resync the segment loader when we switch renditions and
+          // the segment loader is already synced to the previous rendition
+          // We only want to reset the loader here for LLHLS playback, as resetLoader sets fetchAtBuffer_
+          // to false, resulting in fetching segments at currentTime and causing repeated
+          // same-segment requests on playlist change. This erroneously drives up the playback watcher
+          // stalled segment count, as re-requesting segments at the currentTime or browser cached segments
+          // will not change the buffer.
+          // Reference for LLHLS fixes: https://github.com/videojs/http-streaming/pull/1201
+          const isLLHLS = !newPlaylist.endList && typeof newPlaylist.partTargetDuration === 'number';
+          if (isLLHLS) {
+            this.resetLoader();
+          } else {
+            this.resyncLoader();
+          }
+        }
+        this.currentMediaInfo_ = void 0;
+        this.trigger('playlistupdate'); // the rest of this function depends on `oldPlaylist` being defined
+
+        return;
+      } // we reloaded the same playlist so we are in a live scenario
+      // and we will likely need to adjust the mediaIndex
+
+      const mediaSequenceDiff = newPlaylist.mediaSequence - oldPlaylist.mediaSequence;
+      this.logger_(`live window shift [${mediaSequenceDiff}]`); // update the mediaIndex on the SegmentLoader
+      // this is important because we can abort a request and this value must be
+      // equal to the last appended mediaIndex
+
+      if (this.mediaIndex !== null) {
+        this.mediaIndex -= mediaSequenceDiff; // this can happen if we are going to load the first segment, but get a playlist
+        // update during that. mediaIndex would go from 0 to -1 if mediaSequence in the
+        // new playlist was incremented by 1.
+
+        if (this.mediaIndex < 0) {
+          this.mediaIndex = null;
+          this.partIndex = null;
+        } else {
+          const segment = this.playlist_.segments[this.mediaIndex]; // partIndex should remain the same for the same segment
+          // unless parts fell off of the playlist for this segment.
+          // In that case we need to reset partIndex and resync
+
+          if (this.partIndex && (!segment.parts || !segment.parts.length || !segment.parts[this.partIndex])) {
+            const mediaIndex = this.mediaIndex;
+            this.logger_(`currently processing part (index ${this.partIndex}) no longer exists.`);
+            this.resetLoader(); // We want to throw away the partIndex and the data associated with it,
+            // as the part was dropped from our current playlists segment.
+            // The mediaIndex will still be valid so keep that around.
+
+            this.mediaIndex = mediaIndex;
+          }
+        }
+      } // update the mediaIndex on the SegmentInfo object
+      // this is important because we will update this.mediaIndex with this value
+      // in `handleAppendsDone_` after the segment has been successfully appended
+
+      if (segmentInfo) {
+        segmentInfo.mediaIndex -= mediaSequenceDiff;
+        if (segmentInfo.mediaIndex < 0) {
+          segmentInfo.mediaIndex = null;
+          segmentInfo.partIndex = null;
+        } else {
+          // we need to update the referenced segment so that timing information is
+          // saved for the new playlist's segment, however, if the segment fell off the
+          // playlist, we can leave the old reference and just lose the timing info
+          if (segmentInfo.mediaIndex >= 0) {
+            segmentInfo.segment = newPlaylist.segments[segmentInfo.mediaIndex];
+          }
+          if (segmentInfo.partIndex >= 0 && segmentInfo.segment.parts) {
+            segmentInfo.part = segmentInfo.segment.parts[segmentInfo.partIndex];
+          }
+        }
+      }
+      this.syncController_.saveExpiredSegmentInfo(oldPlaylist, newPlaylist);
+    }
+    /**
+     * Prevent the loader from fetching additional segments. If there
+     * is a segment request outstanding, it will finish processing
+     * before the loader halts. A segment loader can be unpaused by
+     * calling load().
+     */
+
+    pause() {
+      if (this.checkBufferTimeout_) {
+        window.clearTimeout(this.checkBufferTimeout_);
+        this.checkBufferTimeout_ = null;
+      }
+    }
+    /**
+     * Returns whether the segment loader is fetching additional
+     * segments when given the opportunity. This property can be
+     * modified through calls to pause() and load().
+     */
+
+    paused() {
+      return this.checkBufferTimeout_ === null;
+    }
+    /**
+     * Delete all the buffered data and reset the SegmentLoader
+     *
+     * @param {Function} [done] an optional callback to be executed when the remove
+     * operation is complete
+     */
+
+    resetEverything(done) {
+      this.ended_ = false;
+      this.activeInitSegmentId_ = null;
+      this.appendInitSegment_ = {
+        audio: true,
+        video: true
+      };
+      this.resetLoader(); // remove from 0, the earliest point, to Infinity, to signify removal of everything.
+      // VTT Segment Loader doesn't need to do anything but in the regular SegmentLoader,
+      // we then clamp the value to duration if necessary.
+
+      this.remove(0, Infinity, done); // clears fmp4 captions
+
+      if (this.transmuxer_) {
+        this.transmuxer_.postMessage({
+          action: 'clearAllMp4Captions'
+        }); // reset the cache in the transmuxer
+
+        this.transmuxer_.postMessage({
+          action: 'reset'
+        });
+      }
+    }
+    /**
+     * Force the SegmentLoader to resync and start loading around the currentTime instead
+     * of starting at the end of the buffer
+     *
+     * Useful for fast quality changes
+     */
+
+    resetLoader() {
+      this.fetchAtBuffer_ = false;
+      if (this.mediaSequenceSync_) {
+        this.mediaSequenceSync_.resetAppendedStatus();
+      }
+      this.resyncLoader();
+    }
+    /**
+     * Force the SegmentLoader to restart synchronization and make a conservative guess
+     * before returning to the simple walk-forward method
+     */
+
+    resyncLoader() {
+      if (this.transmuxer_) {
+        // need to clear out any cached data to prepare for the new segment
+        segmentTransmuxer.reset(this.transmuxer_);
+      }
+      this.mediaIndex = null;
+      this.partIndex = null;
+      this.syncPoint_ = null;
+      this.isPendingTimestampOffset_ = false; // this is mainly to sync timing-info when switching between renditions with and without timestamp-rollover,
+      // so we don't want it for DASH or fragmented mp4 segments.
+
+      const isFmp4 = this.currentMediaInfo_ && this.currentMediaInfo_.isFmp4;
+      const isHlsTs = this.sourceType_ === 'hls' && !isFmp4;
+      if (isHlsTs) {
+        this.shouldForceTimestampOffsetAfterResync_ = true;
+      }
+      this.callQueue_ = [];
+      this.loadQueue_ = [];
+      this.metadataQueue_.id3 = [];
+      this.metadataQueue_.caption = [];
+      this.abort();
+      if (this.transmuxer_) {
+        this.transmuxer_.postMessage({
+          action: 'clearParsedMp4Captions'
+        });
+      }
+    }
+    /**
+     * Remove any data in the source buffer between start and end times
+     *
+     * @param {number} start - the start time of the region to remove from the buffer
+     * @param {number} end - the end time of the region to remove from the buffer
+     * @param {Function} [done] - an optional callback to be executed when the remove
+     * @param {boolean} force - force all remove operations to happen
+     * operation is complete
+     */
+
+    remove(start, end, done = () => {}, force = false) {
+      // clamp end to duration if we need to remove everything.
+      // This is due to a browser bug that causes issues if we remove to Infinity.
+      // videojs/videojs-contrib-hls#1225
+      if (end === Infinity) {
+        end = this.duration_();
+      } // skip removes that would throw an error
+      // commonly happens during a rendition switch at the start of a video
+      // from start 0 to end 0
+
+      if (end <= start) {
+        this.logger_('skipping remove because end ${end} is <= start ${start}');
+        return;
+      }
+      if (!this.sourceUpdater_ || !this.getMediaInfo_()) {
+        this.logger_('skipping remove because no source updater or starting media info'); // nothing to remove if we haven't processed any media
+
+        return;
+      } // set it to one to complete this function's removes
+
+      let removesRemaining = 1;
+      const removeFinished = () => {
+        removesRemaining--;
+        if (removesRemaining === 0) {
+          done();
+        }
+      };
+      if (force || !this.audioDisabled_) {
+        removesRemaining++;
+        this.sourceUpdater_.removeAudio(start, end, removeFinished);
+      } // While it would be better to only remove video if the main loader has video, this
+      // should be safe with audio only as removeVideo will call back even if there's no
+      // video buffer.
+      //
+      // In theory we can check to see if there's video before calling the remove, but in
+      // the event that we're switching between renditions and from video to audio only
+      // (when we add support for that), we may need to clear the video contents despite
+      // what the new media will contain.
+
+      if (force || this.loaderType_ === 'main') {
+        this.gopBuffer_ = removeGopBuffer(this.gopBuffer_, start, end, this.timeMapping_);
+        removesRemaining++;
+        this.sourceUpdater_.removeVideo(start, end, removeFinished);
+      } // remove any captions and ID3 tags
+
+      for (const track in this.inbandTextTracks_) {
+        removeCuesFromTrack(start, end, this.inbandTextTracks_[track]);
+      }
+      removeCuesFromTrack(start, end, this.segmentMetadataTrack_); // finished this function's removes
+
+      removeFinished();
+    }
+    /**
+     * (re-)schedule monitorBufferTick_ to run as soon as possible
+     *
+     * @private
+     */
+
+    monitorBuffer_() {
+      if (this.checkBufferTimeout_) {
+        window.clearTimeout(this.checkBufferTimeout_);
+      }
+      this.checkBufferTimeout_ = window.setTimeout(this.monitorBufferTick_.bind(this), 1);
+    }
+    /**
+     * As long as the SegmentLoader is in the READY state, periodically
+     * invoke fillBuffer_().
+     *
+     * @private
+     */
+
+    monitorBufferTick_() {
+      if (this.state === 'READY') {
+        this.fillBuffer_();
+      }
+      if (this.checkBufferTimeout_) {
+        window.clearTimeout(this.checkBufferTimeout_);
+      }
+      this.checkBufferTimeout_ = window.setTimeout(this.monitorBufferTick_.bind(this), CHECK_BUFFER_DELAY);
+    }
+    /**
+     * fill the buffer with segements unless the sourceBuffers are
+     * currently updating
+     *
+     * Note: this function should only ever be called by monitorBuffer_
+     * and never directly
+     *
+     * @private
+     */
+
+    fillBuffer_() {
+      // TODO since the source buffer maintains a queue, and we shouldn't call this function
+      // except when we're ready for the next segment, this check can most likely be removed
+      if (this.sourceUpdater_.updating()) {
+        return;
+      } // see if we need to begin loading immediately
+
+      const segmentInfo = this.chooseNextRequest_();
+      if (!segmentInfo) {
+        return;
+      }
+      if (typeof segmentInfo.timestampOffset === 'number') {
+        this.isPendingTimestampOffset_ = false;
+        this.timelineChangeController_.pendingTimelineChange({
+          type: this.loaderType_,
+          from: this.currentTimeline_,
+          to: segmentInfo.timeline
+        });
+      }
+      this.loadSegment_(segmentInfo);
+    }
+    /**
+     * Determines if we should call endOfStream on the media source based
+     * on the state of the buffer or if appened segment was the final
+     * segment in the playlist.
+     *
+     * @param {number} [mediaIndex] the media index of segment we last appended
+     * @param {Object} [playlist] a media playlist object
+     * @return {boolean} do we need to call endOfStream on the MediaSource
+     */
+
+    isEndOfStream_(mediaIndex = this.mediaIndex, playlist = this.playlist_, partIndex = this.partIndex) {
+      if (!playlist || !this.mediaSource_) {
+        return false;
+      }
+      const segment = typeof mediaIndex === 'number' && playlist.segments[mediaIndex]; // mediaIndex is zero based but length is 1 based
+
+      const appendedLastSegment = mediaIndex + 1 === playlist.segments.length; // true if there are no parts, or this is the last part.
+
+      const appendedLastPart = !segment || !segment.parts || partIndex + 1 === segment.parts.length; // if we've buffered to the end of the video, we need to call endOfStream
+      // so that MediaSources can trigger the `ended` event when it runs out of
+      // buffered data instead of waiting for me
+
+      return playlist.endList && this.mediaSource_.readyState === 'open' && appendedLastSegment && appendedLastPart;
+    }
+    /**
+     * Determines what request should be made given current segment loader state.
+     *
+     * @return {Object} a request object that describes the segment/part to load
+     */
+
+    chooseNextRequest_() {
+      const buffered = this.buffered_();
+      const bufferedEnd = lastBufferedEnd(buffered) || 0;
+      const bufferedTime = timeAheadOf(buffered, this.currentTime_());
+      const preloaded = !this.hasPlayed_() && bufferedTime >= 1;
+      const haveEnoughBuffer = bufferedTime >= this.goalBufferLength_();
+      const segments = this.playlist_.segments; // return no segment if:
+      // 1. we don't have segments
+      // 2. The video has not yet played and we already downloaded a segment
+      // 3. we already have enough buffered time
+
+      if (!segments.length || preloaded || haveEnoughBuffer) {
+        return null;
+      }
+      this.syncPoint_ = this.syncPoint_ || this.syncController_.getSyncPoint(this.playlist_, this.duration_(), this.currentTimeline_, this.currentTime_(), this.loaderType_);
+      const next = {
+        partIndex: null,
+        mediaIndex: null,
+        startOfSegment: null,
+        playlist: this.playlist_,
+        isSyncRequest: Boolean(!this.syncPoint_)
+      };
+      if (next.isSyncRequest) {
+        next.mediaIndex = getSyncSegmentCandidate(this.currentTimeline_, segments, bufferedEnd);
+        this.logger_(`choose next request. Can not find sync point. Fallback to media Index: ${next.mediaIndex}`);
+      } else if (this.mediaIndex !== null) {
+        const segment = segments[this.mediaIndex];
+        const partIndex = typeof this.partIndex === 'number' ? this.partIndex : -1;
+        next.startOfSegment = segment.end ? segment.end : bufferedEnd;
+        if (segment.parts && segment.parts[partIndex + 1]) {
+          next.mediaIndex = this.mediaIndex;
+          next.partIndex = partIndex + 1;
+        } else {
+          next.mediaIndex = this.mediaIndex + 1;
+        }
+      } else {
+        let segmentIndex;
+        let partIndex;
+        let startTime;
+        const targetTime = this.fetchAtBuffer_ ? bufferedEnd : this.currentTime_();
+        if (this.mediaSequenceSync_) {
+          this.logger_(`chooseNextRequest_ request after Quality Switch:
+For TargetTime: ${targetTime}.
+CurrentTime: ${this.currentTime_()}
+BufferedEnd: ${bufferedEnd}
+Fetch At Buffer: ${this.fetchAtBuffer_}
+`, this.mediaSequenceSync_.diagnostics);
+        }
+        if (this.mediaSequenceSync_ && this.mediaSequenceSync_.isReliable) {
+          const syncInfo = this.getSyncInfoFromMediaSequenceSync_(targetTime);
+          if (!syncInfo) {
+            this.logger_('chooseNextRequest_ - no sync info found using media sequence sync'); // no match
+
+            return null;
+          }
+          this.logger_(`chooseNextRequest_ mediaSequence syncInfo (${syncInfo.start} --> ${syncInfo.end})`);
+          segmentIndex = syncInfo.segmentIndex;
+          partIndex = syncInfo.partIndex;
+          startTime = syncInfo.start;
+        } else {
+          this.logger_('chooseNextRequest_ - fallback to a regular segment selection algorithm, based on a syncPoint.'); // fallback
+
+          const mediaInfoForTime = Playlist.getMediaInfoForTime({
+            exactManifestTimings: this.exactManifestTimings,
+            playlist: this.playlist_,
+            currentTime: targetTime,
+            startingPartIndex: this.syncPoint_.partIndex,
+            startingSegmentIndex: this.syncPoint_.segmentIndex,
+            startTime: this.syncPoint_.time
+          });
+          segmentIndex = mediaInfoForTime.segmentIndex;
+          partIndex = mediaInfoForTime.partIndex;
+          startTime = mediaInfoForTime.startTime;
+        }
+        next.getMediaInfoForTime = this.fetchAtBuffer_ ? `bufferedEnd ${targetTime}` : `currentTime ${targetTime}`;
+        next.mediaIndex = segmentIndex;
+        next.startOfSegment = startTime;
+        next.partIndex = partIndex;
+        this.logger_(`choose next request. Playlist switched and we have a sync point. Media Index: ${next.mediaIndex} `);
+      }
+      const nextSegment = segments[next.mediaIndex];
+      let nextPart = nextSegment && typeof next.partIndex === 'number' && nextSegment.parts && nextSegment.parts[next.partIndex]; // if the next segment index is invalid or
+      // the next partIndex is invalid do not choose a next segment.
+
+      if (!nextSegment || typeof next.partIndex === 'number' && !nextPart) {
+        return null;
+      } // if the next segment has parts, and we don't have a partIndex.
+      // Set partIndex to 0
+
+      if (typeof next.partIndex !== 'number' && nextSegment.parts) {
+        next.partIndex = 0;
+        nextPart = nextSegment.parts[0];
+      } // independentSegments applies to every segment in a playlist. If independentSegments appears in a main playlist,
+      // it applies to each segment in each media playlist.
+      // https://datatracker.ietf.org/doc/html/draft-pantos-http-live-streaming-23#section-4.3.5.1
+
+      const hasIndependentSegments = this.vhs_.playlists && this.vhs_.playlists.main && this.vhs_.playlists.main.independentSegments || this.playlist_.independentSegments; // if we have no buffered data then we need to make sure
+      // that the next part we append is "independent" if possible.
+      // So we check if the previous part is independent, and request
+      // it if it is.
+
+      if (!bufferedTime && nextPart && !hasIndependentSegments && !nextPart.independent) {
+        if (next.partIndex === 0) {
+          const lastSegment = segments[next.mediaIndex - 1];
+          const lastSegmentLastPart = lastSegment.parts && lastSegment.parts.length && lastSegment.parts[lastSegment.parts.length - 1];
+          if (lastSegmentLastPart && lastSegmentLastPart.independent) {
+            next.mediaIndex -= 1;
+            next.partIndex = lastSegment.parts.length - 1;
+            next.independent = 'previous segment';
+          }
+        } else if (nextSegment.parts[next.partIndex - 1].independent) {
+          next.partIndex -= 1;
+          next.independent = 'previous part';
+        }
+      }
+      const ended = this.mediaSource_ && this.mediaSource_.readyState === 'ended'; // do not choose a next segment if all of the following:
+      // 1. this is the last segment in the playlist
+      // 2. end of stream has been called on the media source already
+      // 3. the player is not seeking
+
+      if (next.mediaIndex >= segments.length - 1 && ended && !this.seeking_()) {
+        return null;
+      }
+      if (this.shouldForceTimestampOffsetAfterResync_) {
+        this.shouldForceTimestampOffsetAfterResync_ = false;
+        next.forceTimestampOffset = true;
+        this.logger_('choose next request. Force timestamp offset after loader resync');
+      }
+      return this.generateSegmentInfo_(next);
+    }
+    getSyncInfoFromMediaSequenceSync_(targetTime) {
+      if (!this.mediaSequenceSync_) {
+        return null;
+      } // we should pull the target time to the least available time if we drop out of sync for any reason
+
+      const finalTargetTime = Math.max(targetTime, this.mediaSequenceSync_.start);
+      if (targetTime !== finalTargetTime) {
+        this.logger_(`getSyncInfoFromMediaSequenceSync_. Pulled target time from ${targetTime} to ${finalTargetTime}`);
+      }
+      const mediaSequenceSyncInfo = this.mediaSequenceSync_.getSyncInfoForTime(finalTargetTime);
+      if (!mediaSequenceSyncInfo) {
+        // no match at all
+        return null;
+      }
+      if (!mediaSequenceSyncInfo.isAppended) {
+        // has a perfect match
+        return mediaSequenceSyncInfo;
+      } // has match, but segment was already appended.
+      // attempt to auto-advance to the nearest next segment:
+
+      const nextMediaSequenceSyncInfo = this.mediaSequenceSync_.getSyncInfoForTime(mediaSequenceSyncInfo.end);
+      if (!nextMediaSequenceSyncInfo) {
+        // no match at all
+        return null;
+      }
+      if (nextMediaSequenceSyncInfo.isAppended) {
+        this.logger_('getSyncInfoFromMediaSequenceSync_: We encounter unexpected scenario where next media sequence sync info is also appended!');
+      } // got match with the nearest next segment
+
+      return nextMediaSequenceSyncInfo;
+    }
+    generateSegmentInfo_(options) {
+      const {
+        independent,
+        playlist,
+        mediaIndex,
+        startOfSegment,
+        isSyncRequest,
+        partIndex,
+        forceTimestampOffset,
+        getMediaInfoForTime
+      } = options;
+      const segment = playlist.segments[mediaIndex];
+      const part = typeof partIndex === 'number' && segment.parts[partIndex];
+      const segmentInfo = {
+        requestId: 'segment-loader-' + Math.random(),
+        // resolve the segment URL relative to the playlist
+        uri: part && part.resolvedUri || segment.resolvedUri,
+        // the segment's mediaIndex at the time it was requested
+        mediaIndex,
+        partIndex: part ? partIndex : null,
+        // whether or not to update the SegmentLoader's state with this
+        // segment's mediaIndex
+        isSyncRequest,
+        startOfSegment,
+        // the segment's playlist
+        playlist,
+        // unencrypted bytes of the segment
+        bytes: null,
+        // when a key is defined for this segment, the encrypted bytes
+        encryptedBytes: null,
+        // The target timestampOffset for this segment when we append it
+        // to the source buffer
+        timestampOffset: null,
+        // The timeline that the segment is in
+        timeline: segment.timeline,
+        // The expected duration of the segment in seconds
+        duration: part && part.duration || segment.duration,
+        // retain the segment in case the playlist updates while doing an async process
+        segment,
+        part,
+        byteLength: 0,
+        transmuxer: this.transmuxer_,
+        // type of getMediaInfoForTime that was used to get this segment
+        getMediaInfoForTime,
+        independent
+      };
+      const overrideCheck = typeof forceTimestampOffset !== 'undefined' ? forceTimestampOffset : this.isPendingTimestampOffset_;
+      segmentInfo.timestampOffset = this.timestampOffsetForSegment_({
+        segmentTimeline: segment.timeline,
+        currentTimeline: this.currentTimeline_,
+        startOfSegment,
+        buffered: this.buffered_(),
+        overrideCheck
+      });
+      const audioBufferedEnd = lastBufferedEnd(this.sourceUpdater_.audioBuffered());
+      if (typeof audioBufferedEnd === 'number') {
+        // since the transmuxer is using the actual timing values, but the buffer is
+        // adjusted by the timestamp offset, we must adjust the value here
+        segmentInfo.audioAppendStart = audioBufferedEnd - this.sourceUpdater_.audioTimestampOffset();
+      }
+      if (this.sourceUpdater_.videoBuffered().length) {
+        segmentInfo.gopsToAlignWith = gopsSafeToAlignWith(this.gopBuffer_,
+        // since the transmuxer is using the actual timing values, but the time is
+        // adjusted by the timestmap offset, we must adjust the value here
+        this.currentTime_() - this.sourceUpdater_.videoTimestampOffset(), this.timeMapping_);
+      }
+      return segmentInfo;
+    } // get the timestampoffset for a segment,
+    // added so that vtt segment loader can override and prevent
+    // adding timestamp offsets.
+
+    timestampOffsetForSegment_(options) {
+      return timestampOffsetForSegment(options);
+    }
+    /**
+     * Determines if the network has enough bandwidth to complete the current segment
+     * request in a timely manner. If not, the request will be aborted early and bandwidth
+     * updated to trigger a playlist switch.
+     *
+     * @param {Object} stats
+     *        Object containing stats about the request timing and size
+     * @private
+     */
+
+    earlyAbortWhenNeeded_(stats) {
+      if (this.vhs_.tech_.paused() ||
+      // Don't abort if the current playlist is on the lowestEnabledRendition
+      // TODO: Replace using timeout with a boolean indicating whether this playlist is
+      //       the lowestEnabledRendition.
+      !this.xhrOptions_.timeout ||
+      // Don't abort if we have no bandwidth information to estimate segment sizes
+      !this.playlist_.attributes.BANDWIDTH) {
+        return;
+      } // Wait at least 1 second since the first byte of data has been received before
+      // using the calculated bandwidth from the progress event to allow the bitrate
+      // to stabilize
+
+      if (Date.now() - (stats.firstBytesReceivedAt || Date.now()) < 1000) {
+        return;
+      }
+      const currentTime = this.currentTime_();
+      const measuredBandwidth = stats.bandwidth;
+      const segmentDuration = this.pendingSegment_.duration;
+      const requestTimeRemaining = Playlist.estimateSegmentRequestTime(segmentDuration, measuredBandwidth, this.playlist_, stats.bytesReceived); // Subtract 1 from the timeUntilRebuffer so we still consider an early abort
+      // if we are only left with less than 1 second when the request completes.
+      // A negative timeUntilRebuffering indicates we are already rebuffering
+
+      const timeUntilRebuffer$1 = timeUntilRebuffer(this.buffered_(), currentTime, this.vhs_.tech_.playbackRate()) - 1; // Only consider aborting early if the estimated time to finish the download
+      // is larger than the estimated time until the player runs out of forward buffer
+
+      if (requestTimeRemaining <= timeUntilRebuffer$1) {
+        return;
+      }
+      const switchCandidate = minRebufferMaxBandwidthSelector({
+        main: this.vhs_.playlists.main,
+        currentTime,
+        bandwidth: measuredBandwidth,
+        duration: this.duration_(),
+        segmentDuration,
+        timeUntilRebuffer: timeUntilRebuffer$1,
+        currentTimeline: this.currentTimeline_,
+        syncController: this.syncController_
+      });
+      if (!switchCandidate) {
+        return;
+      }
+      const rebufferingImpact = requestTimeRemaining - timeUntilRebuffer$1;
+      const timeSavedBySwitching = rebufferingImpact - switchCandidate.rebufferingImpact;
+      let minimumTimeSaving = 0.5; // If we are already rebuffering, increase the amount of variance we add to the
+      // potential round trip time of the new request so that we are not too aggressive
+      // with switching to a playlist that might save us a fraction of a second.
+
+      if (timeUntilRebuffer$1 <= TIME_FUDGE_FACTOR) {
+        minimumTimeSaving = 1;
+      }
+      if (!switchCandidate.playlist || switchCandidate.playlist.uri === this.playlist_.uri || timeSavedBySwitching < minimumTimeSaving) {
+        return;
+      } // set the bandwidth to that of the desired playlist being sure to scale by
+      // BANDWIDTH_VARIANCE and add one so the playlist selector does not exclude it
+      // don't trigger a bandwidthupdate as the bandwidth is artifial
+
+      this.bandwidth = switchCandidate.playlist.attributes.BANDWIDTH * Config.BANDWIDTH_VARIANCE + 1;
+      this.trigger('earlyabort');
+    }
+    handleAbort_(segmentInfo) {
+      this.logger_(`Aborting ${segmentInfoString(segmentInfo)}`);
+      this.mediaRequestsAborted += 1;
+    }
+    /**
+     * XHR `progress` event handler
+     *
+     * @param {Event}
+     *        The XHR `progress` event
+     * @param {Object} simpleSegment
+     *        A simplified segment object copy
+     * @private
+     */
+
+    handleProgress_(event, simpleSegment) {
+      this.earlyAbortWhenNeeded_(simpleSegment.stats);
+      if (this.checkForAbort_(simpleSegment.requestId)) {
+        return;
+      }
+      this.trigger('progress');
+    }
+    handleTrackInfo_(simpleSegment, trackInfo) {
+      this.earlyAbortWhenNeeded_(simpleSegment.stats);
+      if (this.checkForAbort_(simpleSegment.requestId)) {
+        return;
+      }
+      if (this.checkForIllegalMediaSwitch(trackInfo)) {
+        return;
+      }
+      trackInfo = trackInfo || {}; // When we have track info, determine what media types this loader is dealing with.
+      // Guard against cases where we're not getting track info at all until we are
+      // certain that all streams will provide it.
+
+      if (!shallowEqual(this.currentMediaInfo_, trackInfo)) {
+        this.appendInitSegment_ = {
+          audio: true,
+          video: true
+        };
+        this.startingMediaInfo_ = trackInfo;
+        this.currentMediaInfo_ = trackInfo;
+        this.logger_('trackinfo update', trackInfo);
+        this.trigger('trackinfo');
+      } // trackinfo may cause an abort if the trackinfo
+      // causes a codec change to an unsupported codec.
+
+      if (this.checkForAbort_(simpleSegment.requestId)) {
+        return;
+      } // set trackinfo on the pending segment so that
+      // it can append.
+
+      this.pendingSegment_.trackInfo = trackInfo; // check if any calls were waiting on the track info
+
+      if (this.hasEnoughInfoToAppend_()) {
+        this.processCallQueue_();
+      }
+    }
+    handleTimingInfo_(simpleSegment, mediaType, timeType, time) {
+      this.earlyAbortWhenNeeded_(simpleSegment.stats);
+      if (this.checkForAbort_(simpleSegment.requestId)) {
+        return;
+      }
+      const segmentInfo = this.pendingSegment_;
+      const timingInfoProperty = timingInfoPropertyForMedia(mediaType);
+      segmentInfo[timingInfoProperty] = segmentInfo[timingInfoProperty] || {};
+      segmentInfo[timingInfoProperty][timeType] = time;
+      this.logger_(`timinginfo: ${mediaType} - ${timeType} - ${time}`); // check if any calls were waiting on the timing info
+
+      if (this.hasEnoughInfoToAppend_()) {
+        this.processCallQueue_();
+      }
+    }
+    handleCaptions_(simpleSegment, captionData) {
+      this.earlyAbortWhenNeeded_(simpleSegment.stats);
+      if (this.checkForAbort_(simpleSegment.requestId)) {
+        return;
+      } // This could only happen with fmp4 segments, but
+      // should still not happen in general
+
+      if (captionData.length === 0) {
+        this.logger_('SegmentLoader received no captions from a caption event');
+        return;
+      }
+      const segmentInfo = this.pendingSegment_; // Wait until we have some video data so that caption timing
+      // can be adjusted by the timestamp offset
+
+      if (!segmentInfo.hasAppendedData_) {
+        this.metadataQueue_.caption.push(this.handleCaptions_.bind(this, simpleSegment, captionData));
+        return;
+      }
+      const timestampOffset = this.sourceUpdater_.videoTimestampOffset() === null ? this.sourceUpdater_.audioTimestampOffset() : this.sourceUpdater_.videoTimestampOffset();
+      const captionTracks = {}; // get total start/end and captions for each track/stream
+
+      captionData.forEach(caption => {
+        // caption.stream is actually a track name...
+        // set to the existing values in tracks or default values
+        captionTracks[caption.stream] = captionTracks[caption.stream] || {
+          // Infinity, as any other value will be less than this
+          startTime: Infinity,
+          captions: [],
+          // 0 as an other value will be more than this
+          endTime: 0
+        };
+        const captionTrack = captionTracks[caption.stream];
+        captionTrack.startTime = Math.min(captionTrack.startTime, caption.startTime + timestampOffset);
+        captionTrack.endTime = Math.max(captionTrack.endTime, caption.endTime + timestampOffset);
+        captionTrack.captions.push(caption);
+      });
+      Object.keys(captionTracks).forEach(trackName => {
+        const {
+          startTime,
+          endTime,
+          captions
+        } = captionTracks[trackName];
+        const inbandTextTracks = this.inbandTextTracks_;
+        this.logger_(`adding cues from ${startTime} -> ${endTime} for ${trackName}`);
+        createCaptionsTrackIfNotExists(inbandTextTracks, this.vhs_.tech_, trackName); // clear out any cues that start and end at the same time period for the same track.
+        // We do this because a rendition change that also changes the timescale for captions
+        // will result in captions being re-parsed for certain segments. If we add them again
+        // without clearing we will have two of the same captions visible.
+
+        removeCuesFromTrack(startTime, endTime, inbandTextTracks[trackName]);
+        addCaptionData({
+          captionArray: captions,
+          inbandTextTracks,
+          timestampOffset
+        });
+      }); // Reset stored captions since we added parsed
+      // captions to a text track at this point
+
+      if (this.transmuxer_) {
+        this.transmuxer_.postMessage({
+          action: 'clearParsedMp4Captions'
+        });
+      }
+    }
+    handleId3_(simpleSegment, id3Frames, dispatchType) {
+      this.earlyAbortWhenNeeded_(simpleSegment.stats);
+      if (this.checkForAbort_(simpleSegment.requestId)) {
+        return;
+      }
+      const segmentInfo = this.pendingSegment_; // we need to have appended data in order for the timestamp offset to be set
+
+      if (!segmentInfo.hasAppendedData_) {
+        this.metadataQueue_.id3.push(this.handleId3_.bind(this, simpleSegment, id3Frames, dispatchType));
+        return;
+      }
+      this.addMetadataToTextTrack(dispatchType, id3Frames, this.duration_());
+    }
+    processMetadataQueue_() {
+      this.metadataQueue_.id3.forEach(fn => fn());
+      this.metadataQueue_.caption.forEach(fn => fn());
+      this.metadataQueue_.id3 = [];
+      this.metadataQueue_.caption = [];
+    }
+    processCallQueue_() {
+      const callQueue = this.callQueue_; // Clear out the queue before the queued functions are run, since some of the
+      // functions may check the length of the load queue and default to pushing themselves
+      // back onto the queue.
+
+      this.callQueue_ = [];
+      callQueue.forEach(fun => fun());
+    }
+    processLoadQueue_() {
+      const loadQueue = this.loadQueue_; // Clear out the queue before the queued functions are run, since some of the
+      // functions may check the length of the load queue and default to pushing themselves
+      // back onto the queue.
+
+      this.loadQueue_ = [];
+      loadQueue.forEach(fun => fun());
+    }
+    /**
+     * Determines whether the loader has enough info to load the next segment.
+     *
+     * @return {boolean}
+     *         Whether or not the loader has enough info to load the next segment
+     */
+
+    hasEnoughInfoToLoad_() {
+      // Since primary timing goes by video, only the audio loader potentially needs to wait
+      // to load.
+      if (this.loaderType_ !== 'audio') {
+        return true;
+      }
+      const segmentInfo = this.pendingSegment_; // A fill buffer must have already run to establish a pending segment before there's
+      // enough info to load.
+
+      if (!segmentInfo) {
+        return false;
+      } // The first segment can and should be loaded immediately so that source buffers are
+      // created together (before appending). Source buffer creation uses the presence of
+      // audio and video data to determine whether to create audio/video source buffers, and
+      // uses processed (transmuxed or parsed) media to determine the types required.
+
+      if (!this.getCurrentMediaInfo_()) {
+        return true;
+      }
+      if (
+      // Technically, instead of waiting to load a segment on timeline changes, a segment
+      // can be requested and downloaded and only wait before it is transmuxed or parsed.
+      // But in practice, there are a few reasons why it is better to wait until a loader
+      // is ready to append that segment before requesting and downloading:
+      //
+      // 1. Because audio and main loaders cross discontinuities together, if this loader
+      //    is waiting for the other to catch up, then instead of requesting another
+      //    segment and using up more bandwidth, by not yet loading, more bandwidth is
+      //    allotted to the loader currently behind.
+      // 2. media-segment-request doesn't have to have logic to consider whether a segment
+      // is ready to be processed or not, isolating the queueing behavior to the loader.
+      // 3. The audio loader bases some of its segment properties on timing information
+      //    provided by the main loader, meaning that, if the logic for waiting on
+      //    processing was in media-segment-request, then it would also need to know how
+      //    to re-generate the segment information after the main loader caught up.
+      shouldWaitForTimelineChange({
+        timelineChangeController: this.timelineChangeController_,
+        currentTimeline: this.currentTimeline_,
+        segmentTimeline: segmentInfo.timeline,
+        loaderType: this.loaderType_,
+        audioDisabled: this.audioDisabled_
+      })) {
+        return false;
+      }
+      return true;
+    }
+    getCurrentMediaInfo_(segmentInfo = this.pendingSegment_) {
+      return segmentInfo && segmentInfo.trackInfo || this.currentMediaInfo_;
+    }
+    getMediaInfo_(segmentInfo = this.pendingSegment_) {
+      return this.getCurrentMediaInfo_(segmentInfo) || this.startingMediaInfo_;
+    }
+    getPendingSegmentPlaylist() {
+      return this.pendingSegment_ ? this.pendingSegment_.playlist : null;
+    }
+    hasEnoughInfoToAppend_() {
+      if (!this.sourceUpdater_.ready()) {
+        return false;
+      } // If content needs to be removed or the loader is waiting on an append reattempt,
+      // then no additional content should be appended until the prior append is resolved.
+
+      if (this.waitingOnRemove_ || this.quotaExceededErrorRetryTimeout_) {
+        return false;
+      }
+      const segmentInfo = this.pendingSegment_;
+      const trackInfo = this.getCurrentMediaInfo_(); // no segment to append any data for or
+      // we do not have information on this specific
+      // segment yet
+
+      if (!segmentInfo || !trackInfo) {
+        return false;
+      }
+      const {
+        hasAudio,
+        hasVideo,
+        isMuxed
+      } = trackInfo;
+      if (hasVideo && !segmentInfo.videoTimingInfo) {
+        return false;
+      } // muxed content only relies on video timing information for now.
+
+      if (hasAudio && !this.audioDisabled_ && !isMuxed && !segmentInfo.audioTimingInfo) {
+        return false;
+      }
+      if (shouldWaitForTimelineChange({
+        timelineChangeController: this.timelineChangeController_,
+        currentTimeline: this.currentTimeline_,
+        segmentTimeline: segmentInfo.timeline,
+        loaderType: this.loaderType_,
+        audioDisabled: this.audioDisabled_
+      })) {
+        return false;
+      }
+      return true;
+    }
+    handleData_(simpleSegment, result) {
+      this.earlyAbortWhenNeeded_(simpleSegment.stats);
+      if (this.checkForAbort_(simpleSegment.requestId)) {
+        return;
+      } // If there's anything in the call queue, then this data came later and should be
+      // executed after the calls currently queued.
+
+      if (this.callQueue_.length || !this.hasEnoughInfoToAppend_()) {
+        this.callQueue_.push(this.handleData_.bind(this, simpleSegment, result));
+        return;
+      }
+      const segmentInfo = this.pendingSegment_; // update the time mapping so we can translate from display time to media time
+
+      this.setTimeMapping_(segmentInfo.timeline); // for tracking overall stats
+
+      this.updateMediaSecondsLoaded_(segmentInfo.part || segmentInfo.segment); // Note that the state isn't changed from loading to appending. This is because abort
+      // logic may change behavior depending on the state, and changing state too early may
+      // inflate our estimates of bandwidth. In the future this should be re-examined to
+      // note more granular states.
+      // don't process and append data if the mediaSource is closed
+
+      if (this.mediaSource_.readyState === 'closed') {
+        return;
+      } // if this request included an initialization segment, save that data
+      // to the initSegment cache
+
+      if (simpleSegment.map) {
+        simpleSegment.map = this.initSegmentForMap(simpleSegment.map, true); // move over init segment properties to media request
+
+        segmentInfo.segment.map = simpleSegment.map;
+      } // if this request included a segment key, save that data in the cache
+
+      if (simpleSegment.key) {
+        this.segmentKey(simpleSegment.key, true);
+      }
+      segmentInfo.isFmp4 = simpleSegment.isFmp4;
+      segmentInfo.timingInfo = segmentInfo.timingInfo || {};
+      if (segmentInfo.isFmp4) {
+        this.trigger('fmp4');
+        segmentInfo.timingInfo.start = segmentInfo[timingInfoPropertyForMedia(result.type)].start;
+      } else {
+        const trackInfo = this.getCurrentMediaInfo_();
+        const useVideoTimingInfo = this.loaderType_ === 'main' && trackInfo && trackInfo.hasVideo;
+        let firstVideoFrameTimeForData;
+        if (useVideoTimingInfo) {
+          firstVideoFrameTimeForData = segmentInfo.videoTimingInfo.start;
+        } // Segment loader knows more about segment timing than the transmuxer (in certain
+        // aspects), so make any changes required for a more accurate start time.
+        // Don't set the end time yet, as the segment may not be finished processing.
+
+        segmentInfo.timingInfo.start = this.trueSegmentStart_({
+          currentStart: segmentInfo.timingInfo.start,
+          playlist: segmentInfo.playlist,
+          mediaIndex: segmentInfo.mediaIndex,
+          currentVideoTimestampOffset: this.sourceUpdater_.videoTimestampOffset(),
+          useVideoTimingInfo,
+          firstVideoFrameTimeForData,
+          videoTimingInfo: segmentInfo.videoTimingInfo,
+          audioTimingInfo: segmentInfo.audioTimingInfo
+        });
+      } // Init segments for audio and video only need to be appended in certain cases. Now
+      // that data is about to be appended, we can check the final cases to determine
+      // whether we should append an init segment.
+
+      this.updateAppendInitSegmentStatus(segmentInfo, result.type); // Timestamp offset should be updated once we get new data and have its timing info,
+      // as we use the start of the segment to offset the best guess (playlist provided)
+      // timestamp offset.
+
+      this.updateSourceBufferTimestampOffset_(segmentInfo); // if this is a sync request we need to determine whether it should
+      // be appended or not.
+
+      if (segmentInfo.isSyncRequest) {
+        // first save/update our timing info for this segment.
+        // this is what allows us to choose an accurate segment
+        // and the main reason we make a sync request.
+        this.updateTimingInfoEnd_(segmentInfo);
+        this.syncController_.saveSegmentTimingInfo({
+          segmentInfo,
+          shouldSaveTimelineMapping: this.loaderType_ === 'main'
+        });
+        const next = this.chooseNextRequest_(); // If the sync request isn't the segment that would be requested next
+        // after taking into account its timing info, do not append it.
+
+        if (next.mediaIndex !== segmentInfo.mediaIndex || next.partIndex !== segmentInfo.partIndex) {
+          this.logger_('sync segment was incorrect, not appending');
+          return;
+        } // otherwise append it like any other segment as our guess was correct.
+
+        this.logger_('sync segment was correct, appending');
+      } // Save some state so that in the future anything waiting on first append (and/or
+      // timestamp offset(s)) can process immediately. While the extra state isn't optimal,
+      // we need some notion of whether the timestamp offset or other relevant information
+      // has had a chance to be set.
+
+      segmentInfo.hasAppendedData_ = true; // Now that the timestamp offset should be set, we can append any waiting ID3 tags.
+
+      this.processMetadataQueue_();
+      this.appendData_(segmentInfo, result);
+    }
+    updateAppendInitSegmentStatus(segmentInfo, type) {
+      // alt audio doesn't manage timestamp offset
+      if (this.loaderType_ === 'main' && typeof segmentInfo.timestampOffset === 'number' &&
+      // in the case that we're handling partial data, we don't want to append an init
+      // segment for each chunk
+      !segmentInfo.changedTimestampOffset) {
+        // if the timestamp offset changed, the timeline may have changed, so we have to re-
+        // append init segments
+        this.appendInitSegment_ = {
+          audio: true,
+          video: true
+        };
+      }
+      if (this.playlistOfLastInitSegment_[type] !== segmentInfo.playlist) {
+        // make sure we append init segment on playlist changes, in case the media config
+        // changed
+        this.appendInitSegment_[type] = true;
+      }
+    }
+    getInitSegmentAndUpdateState_({
+      type,
+      initSegment,
+      map,
+      playlist
+    }) {
+      // "The EXT-X-MAP tag specifies how to obtain the Media Initialization Section
+      // (Section 3) required to parse the applicable Media Segments.  It applies to every
+      // Media Segment that appears after it in the Playlist until the next EXT-X-MAP tag
+      // or until the end of the playlist."
+      // https://tools.ietf.org/html/draft-pantos-http-live-streaming-23#section-4.3.2.5
+      if (map) {
+        const id = initSegmentId(map);
+        if (this.activeInitSegmentId_ === id) {
+          // don't need to re-append the init segment if the ID matches
+          return null;
+        } // a map-specified init segment takes priority over any transmuxed (or otherwise
+        // obtained) init segment
+        //
+        // this also caches the init segment for later use
+
+        initSegment = this.initSegmentForMap(map, true).bytes;
+        this.activeInitSegmentId_ = id;
+      } // We used to always prepend init segments for video, however, that shouldn't be
+      // necessary. Instead, we should only append on changes, similar to what we've always
+      // done for audio. This is more important (though may not be that important) for
+      // frame-by-frame appending for LHLS, simply because of the increased quantity of
+      // appends.
+
+      if (initSegment && this.appendInitSegment_[type]) {
+        // Make sure we track the playlist that we last used for the init segment, so that
+        // we can re-append the init segment in the event that we get data from a new
+        // playlist. Discontinuities and track changes are handled in other sections.
+        this.playlistOfLastInitSegment_[type] = playlist; // Disable future init segment appends for this type. Until a change is necessary.
+
+        this.appendInitSegment_[type] = false; // we need to clear out the fmp4 active init segment id, since
+        // we are appending the muxer init segment
+
+        this.activeInitSegmentId_ = null;
+        return initSegment;
+      }
+      return null;
+    }
+    handleQuotaExceededError_({
+      segmentInfo,
+      type,
+      bytes
+    }, error) {
+      const audioBuffered = this.sourceUpdater_.audioBuffered();
+      const videoBuffered = this.sourceUpdater_.videoBuffered(); // For now we're ignoring any notion of gaps in the buffer, but they, in theory,
+      // should be cleared out during the buffer removals. However, log in case it helps
+      // debug.
+
+      if (audioBuffered.length > 1) {
+        this.logger_('On QUOTA_EXCEEDED_ERR, found gaps in the audio buffer: ' + timeRangesToArray(audioBuffered).join(', '));
+      }
+      if (videoBuffered.length > 1) {
+        this.logger_('On QUOTA_EXCEEDED_ERR, found gaps in the video buffer: ' + timeRangesToArray(videoBuffered).join(', '));
+      }
+      const audioBufferStart = audioBuffered.length ? audioBuffered.start(0) : 0;
+      const audioBufferEnd = audioBuffered.length ? audioBuffered.end(audioBuffered.length - 1) : 0;
+      const videoBufferStart = videoBuffered.length ? videoBuffered.start(0) : 0;
+      const videoBufferEnd = videoBuffered.length ? videoBuffered.end(videoBuffered.length - 1) : 0;
+      if (audioBufferEnd - audioBufferStart <= MIN_BACK_BUFFER && videoBufferEnd - videoBufferStart <= MIN_BACK_BUFFER) {
+        // Can't remove enough buffer to make room for new segment (or the browser doesn't
+        // allow for appends of segments this size). In the future, it may be possible to
+        // split up the segment and append in pieces, but for now, error out this playlist
+        // in an attempt to switch to a more manageable rendition.
+        this.logger_('On QUOTA_EXCEEDED_ERR, single segment too large to append to ' + 'buffer, triggering an error. ' + `Appended byte length: ${bytes.byteLength}, ` + `audio buffer: ${timeRangesToArray(audioBuffered).join(', ')}, ` + `video buffer: ${timeRangesToArray(videoBuffered).join(', ')}, `);
+        this.error({
+          message: 'Quota exceeded error with append of a single segment of content',
+          excludeUntil: Infinity,
+          metadata: {
+            errorType: videojs.Error.SegmentExceedsSourceBufferQuota
+          }
+        });
+        this.trigger('error');
+        return;
+      } // To try to resolve the quota exceeded error, clear back buffer and retry. This means
+      // that the segment-loader should block on future events until this one is handled, so
+      // that it doesn't keep moving onto further segments. Adding the call to the call
+      // queue will prevent further appends until waitingOnRemove_ and
+      // quotaExceededErrorRetryTimeout_ are cleared.
+      //
+      // Note that this will only block the current loader. In the case of demuxed content,
+      // the other load may keep filling as fast as possible. In practice, this should be
+      // OK, as it is a rare case when either audio has a high enough bitrate to fill up a
+      // source buffer, or video fills without enough room for audio to append (and without
+      // the availability of clearing out seconds of back buffer to make room for audio).
+      // But it might still be good to handle this case in the future as a TODO.
+
+      this.waitingOnRemove_ = true;
+      this.callQueue_.push(this.appendToSourceBuffer_.bind(this, {
+        segmentInfo,
+        type,
+        bytes
+      }));
+      const currentTime = this.currentTime_(); // Try to remove as much audio and video as possible to make room for new content
+      // before retrying.
+
+      const timeToRemoveUntil = currentTime - MIN_BACK_BUFFER;
+      this.logger_(`On QUOTA_EXCEEDED_ERR, removing audio/video from 0 to ${timeToRemoveUntil}`);
+      this.remove(0, timeToRemoveUntil, () => {
+        this.logger_(`On QUOTA_EXCEEDED_ERR, retrying append in ${MIN_BACK_BUFFER}s`);
+        this.waitingOnRemove_ = false; // wait the length of time alotted in the back buffer to prevent wasted
+        // attempts (since we can't clear less than the minimum)
+
+        this.quotaExceededErrorRetryTimeout_ = window.setTimeout(() => {
+          this.logger_('On QUOTA_EXCEEDED_ERR, re-processing call queue');
+          this.quotaExceededErrorRetryTimeout_ = null;
+          this.processCallQueue_();
+        }, MIN_BACK_BUFFER * 1000);
+      }, true);
+    }
+    handleAppendError_({
+      segmentInfo,
+      type,
+      bytes
+    }, error) {
+      // if there's no error, nothing to do
+      if (!error) {
+        return;
+      }
+      if (error.code === QUOTA_EXCEEDED_ERR) {
+        this.handleQuotaExceededError_({
+          segmentInfo,
+          type,
+          bytes
+        }); // A quota exceeded error should be recoverable with a future re-append, so no need
+        // to trigger an append error.
+
+        return;
+      }
+      this.logger_('Received non QUOTA_EXCEEDED_ERR on append', error); // If an append errors, we often can't recover.
+      // (see https://w3c.github.io/media-source/#sourcebuffer-append-error).
+      //
+      // Trigger a special error so that it can be handled separately from normal,
+      // recoverable errors.
+
+      this.error({
+        message: `${type} append of ${bytes.length}b failed for segment ` + `#${segmentInfo.mediaIndex} in playlist ${segmentInfo.playlist.id}`,
+        metadata: {
+          errorType: videojs.Error.SegmentAppendError
+        }
+      });
+      this.trigger('appenderror');
+    }
+    appendToSourceBuffer_({
+      segmentInfo,
+      type,
+      initSegment,
+      data,
+      bytes
+    }) {
+      // If this is a re-append, bytes were already created and don't need to be recreated
+      if (!bytes) {
+        const segments = [data];
+        let byteLength = data.byteLength;
+        if (initSegment) {
+          // if the media initialization segment is changing, append it before the content
+          // segment
+          segments.unshift(initSegment);
+          byteLength += initSegment.byteLength;
+        } // Technically we should be OK appending the init segment separately, however, we
+        // haven't yet tested that, and prepending is how we have always done things.
+
+        bytes = concatSegments({
+          bytes: byteLength,
+          segments
+        });
+      }
+      this.sourceUpdater_.appendBuffer({
+        segmentInfo,
+        type,
+        bytes
+      }, this.handleAppendError_.bind(this, {
+        segmentInfo,
+        type,
+        bytes
+      }));
+    }
+    handleSegmentTimingInfo_(type, requestId, segmentTimingInfo) {
+      if (!this.pendingSegment_ || requestId !== this.pendingSegment_.requestId) {
+        return;
+      }
+      const segment = this.pendingSegment_.segment;
+      const timingInfoProperty = `${type}TimingInfo`;
+      if (!segment[timingInfoProperty]) {
+        segment[timingInfoProperty] = {};
+      }
+      segment[timingInfoProperty].transmuxerPrependedSeconds = segmentTimingInfo.prependedContentDuration || 0;
+      segment[timingInfoProperty].transmuxedPresentationStart = segmentTimingInfo.start.presentation;
+      segment[timingInfoProperty].transmuxedDecodeStart = segmentTimingInfo.start.decode;
+      segment[timingInfoProperty].transmuxedPresentationEnd = segmentTimingInfo.end.presentation;
+      segment[timingInfoProperty].transmuxedDecodeEnd = segmentTimingInfo.end.decode; // mainly used as a reference for debugging
+
+      segment[timingInfoProperty].baseMediaDecodeTime = segmentTimingInfo.baseMediaDecodeTime;
+    }
+    appendData_(segmentInfo, result) {
+      const {
+        type,
+        data
+      } = result;
+      if (!data || !data.byteLength) {
+        return;
+      }
+      if (type === 'audio' && this.audioDisabled_) {
+        return;
+      }
+      const initSegment = this.getInitSegmentAndUpdateState_({
+        type,
+        initSegment: result.initSegment,
+        playlist: segmentInfo.playlist,
+        map: segmentInfo.isFmp4 ? segmentInfo.segment.map : null
+      });
+      this.appendToSourceBuffer_({
+        segmentInfo,
+        type,
+        initSegment,
+        data
+      });
+    }
+    /**
+     * load a specific segment from a request into the buffer
+     *
+     * @private
+     */
+
+    loadSegment_(segmentInfo) {
+      this.state = 'WAITING';
+      this.pendingSegment_ = segmentInfo;
+      this.trimBackBuffer_(segmentInfo);
+      if (typeof segmentInfo.timestampOffset === 'number') {
+        if (this.transmuxer_) {
+          this.transmuxer_.postMessage({
+            action: 'clearAllMp4Captions'
+          });
+        }
+      }
+      if (!this.hasEnoughInfoToLoad_()) {
+        this.loadQueue_.push(() => {
+          // regenerate the audioAppendStart, timestampOffset, etc as they
+          // may have changed since this function was added to the queue.
+          const options = _extends$1({}, segmentInfo, {
+            forceTimestampOffset: true
+          });
+          _extends$1(segmentInfo, this.generateSegmentInfo_(options));
+          this.isPendingTimestampOffset_ = false;
+          this.updateTransmuxerAndRequestSegment_(segmentInfo);
+        });
+        return;
+      }
+      this.updateTransmuxerAndRequestSegment_(segmentInfo);
+    }
+    updateTransmuxerAndRequestSegment_(segmentInfo) {
+      // We'll update the source buffer's timestamp offset once we have transmuxed data, but
+      // the transmuxer still needs to be updated before then.
+      //
+      // Even though keepOriginalTimestamps is set to true for the transmuxer, timestamp
+      // offset must be passed to the transmuxer for stream correcting adjustments.
+      if (this.shouldUpdateTransmuxerTimestampOffset_(segmentInfo.timestampOffset)) {
+        this.gopBuffer_.length = 0; // gopsToAlignWith was set before the GOP buffer was cleared
+
+        segmentInfo.gopsToAlignWith = [];
+        this.timeMapping_ = 0; // reset values in the transmuxer since a discontinuity should start fresh
+
+        this.transmuxer_.postMessage({
+          action: 'reset'
+        });
+        this.transmuxer_.postMessage({
+          action: 'setTimestampOffset',
+          timestampOffset: segmentInfo.timestampOffset
+        });
+      }
+      const simpleSegment = this.createSimplifiedSegmentObj_(segmentInfo);
+      const isEndOfStream = this.isEndOfStream_(segmentInfo.mediaIndex, segmentInfo.playlist, segmentInfo.partIndex);
+      const isWalkingForward = this.mediaIndex !== null;
+      const isDiscontinuity = segmentInfo.timeline !== this.currentTimeline_ &&
+      // currentTimeline starts at -1, so we shouldn't end the timeline switching to 0,
+      // the first timeline
+      segmentInfo.timeline > 0;
+      const isEndOfTimeline = isEndOfStream || isWalkingForward && isDiscontinuity;
+      this.logger_(`Requesting
+${compactSegmentUrlDescription(segmentInfo.uri)}
+${segmentInfoString(segmentInfo)}`); // If there's an init segment associated with this segment, but it is not cached (identified by a lack of bytes),
+      // then this init segment has never been seen before and should be appended.
+      //
+      // At this point the content type (audio/video or both) is not yet known, but it should be safe to set
+      // both to true and leave the decision of whether to append the init segment to append time.
+
+      if (simpleSegment.map && !simpleSegment.map.bytes) {
+        this.logger_('going to request init segment.');
+        this.appendInitSegment_ = {
+          video: true,
+          audio: true
+        };
+      }
+      segmentInfo.abortRequests = mediaSegmentRequest({
+        xhr: this.vhs_.xhr,
+        xhrOptions: this.xhrOptions_,
+        decryptionWorker: this.decrypter_,
+        segment: simpleSegment,
+        abortFn: this.handleAbort_.bind(this, segmentInfo),
+        progressFn: this.handleProgress_.bind(this),
+        trackInfoFn: this.handleTrackInfo_.bind(this),
+        timingInfoFn: this.handleTimingInfo_.bind(this),
+        videoSegmentTimingInfoFn: this.handleSegmentTimingInfo_.bind(this, 'video', segmentInfo.requestId),
+        audioSegmentTimingInfoFn: this.handleSegmentTimingInfo_.bind(this, 'audio', segmentInfo.requestId),
+        captionsFn: this.handleCaptions_.bind(this),
+        isEndOfTimeline,
+        endedTimelineFn: () => {
+          this.logger_('received endedtimeline callback');
+        },
+        id3Fn: this.handleId3_.bind(this),
+        dataFn: this.handleData_.bind(this),
+        doneFn: this.segmentRequestFinished_.bind(this),
+        onTransmuxerLog: ({
+          message,
+          level,
+          stream
+        }) => {
+          this.logger_(`${segmentInfoString(segmentInfo)} logged from transmuxer stream ${stream} as a ${level}: ${message}`);
+        }
+      });
+    }
+    /**
+     * trim the back buffer so that we don't have too much data
+     * in the source buffer
+     *
+     * @private
+     *
+     * @param {Object} segmentInfo - the current segment
+     */
+
+    trimBackBuffer_(segmentInfo) {
+      const removeToTime = safeBackBufferTrimTime(this.seekable_(), this.currentTime_(), this.playlist_.targetDuration || 10); // Chrome has a hard limit of 150MB of
+      // buffer and a very conservative "garbage collector"
+      // We manually clear out the old buffer to ensure
+      // we don't trigger the QuotaExceeded error
+      // on the source buffer during subsequent appends
+
+      if (removeToTime > 0) {
+        this.remove(0, removeToTime);
+      }
+    }
+    /**
+     * created a simplified copy of the segment object with just the
+     * information necessary to perform the XHR and decryption
+     *
+     * @private
+     *
+     * @param {Object} segmentInfo - the current segment
+     * @return {Object} a simplified segment object copy
+     */
+
+    createSimplifiedSegmentObj_(segmentInfo) {
+      const segment = segmentInfo.segment;
+      const part = segmentInfo.part;
+      const simpleSegment = {
+        resolvedUri: part ? part.resolvedUri : segment.resolvedUri,
+        byterange: part ? part.byterange : segment.byterange,
+        requestId: segmentInfo.requestId,
+        transmuxer: segmentInfo.transmuxer,
+        audioAppendStart: segmentInfo.audioAppendStart,
+        gopsToAlignWith: segmentInfo.gopsToAlignWith,
+        part: segmentInfo.part
+      };
+      const previousSegment = segmentInfo.playlist.segments[segmentInfo.mediaIndex - 1];
+      if (previousSegment && previousSegment.timeline === segment.timeline) {
+        // The baseStartTime of a segment is used to handle rollover when probing the TS
+        // segment to retrieve timing information. Since the probe only looks at the media's
+        // times (e.g., PTS and DTS values of the segment), and doesn't consider the
+        // player's time (e.g., player.currentTime()), baseStartTime should reflect the
+        // media time as well. transmuxedDecodeEnd represents the end time of a segment, in
+        // seconds of media time, so should be used here. The previous segment is used since
+        // the end of the previous segment should represent the beginning of the current
+        // segment, so long as they are on the same timeline.
+        if (previousSegment.videoTimingInfo) {
+          simpleSegment.baseStartTime = previousSegment.videoTimingInfo.transmuxedDecodeEnd;
+        } else if (previousSegment.audioTimingInfo) {
+          simpleSegment.baseStartTime = previousSegment.audioTimingInfo.transmuxedDecodeEnd;
+        }
+      }
+      if (segment.key) {
+        // if the media sequence is greater than 2^32, the IV will be incorrect
+        // assuming 10s segments, that would be about 1300 years
+        const iv = segment.key.iv || new Uint32Array([0, 0, 0, segmentInfo.mediaIndex + segmentInfo.playlist.mediaSequence]);
+        simpleSegment.key = this.segmentKey(segment.key);
+        simpleSegment.key.iv = iv;
+      }
+      if (segment.map) {
+        simpleSegment.map = this.initSegmentForMap(segment.map);
+      }
+      return simpleSegment;
+    }
+    saveTransferStats_(stats) {
+      // every request counts as a media request even if it has been aborted
+      // or canceled due to a timeout
+      this.mediaRequests += 1;
+      if (stats) {
+        this.mediaBytesTransferred += stats.bytesReceived;
+        this.mediaTransferDuration += stats.roundTripTime;
+      }
+    }
+    saveBandwidthRelatedStats_(duration, stats) {
+      // byteLength will be used for throughput, and should be based on bytes receieved,
+      // which we only know at the end of the request and should reflect total bytes
+      // downloaded rather than just bytes processed from components of the segment
+      this.pendingSegment_.byteLength = stats.bytesReceived;
+      if (duration < MIN_SEGMENT_DURATION_TO_SAVE_STATS) {
+        this.logger_(`Ignoring segment's bandwidth because its duration of ${duration}` + ` is less than the min to record ${MIN_SEGMENT_DURATION_TO_SAVE_STATS}`);
+        return;
+      }
+      this.bandwidth = stats.bandwidth;
+      this.roundTrip = stats.roundTripTime;
+    }
+    handleTimeout_() {
+      // although the VTT segment loader bandwidth isn't really used, it's good to
+      // maintain functinality between segment loaders
+      this.mediaRequestsTimedout += 1;
+      this.bandwidth = 1;
+      this.roundTrip = NaN;
+      this.trigger('bandwidthupdate');
+      this.trigger('timeout');
+    }
+    /**
+     * Handle the callback from the segmentRequest function and set the
+     * associated SegmentLoader state and errors if necessary
+     *
+     * @private
+     */
+
+    segmentRequestFinished_(error, simpleSegment, result) {
+      // TODO handle special cases, e.g., muxed audio/video but only audio in the segment
+      // check the call queue directly since this function doesn't need to deal with any
+      // data, and can continue even if the source buffers are not set up and we didn't get
+      // any data from the segment
+      if (this.callQueue_.length) {
+        this.callQueue_.push(this.segmentRequestFinished_.bind(this, error, simpleSegment, result));
+        return;
+      }
+      this.saveTransferStats_(simpleSegment.stats); // The request was aborted and the SegmentLoader has already been reset
+
+      if (!this.pendingSegment_) {
+        return;
+      } // the request was aborted and the SegmentLoader has already started
+      // another request. this can happen when the timeout for an aborted
+      // request triggers due to a limitation in the XHR library
+      // do not count this as any sort of request or we risk double-counting
+
+      if (simpleSegment.requestId !== this.pendingSegment_.requestId) {
+        return;
+      } // an error occurred from the active pendingSegment_ so reset everything
+
+      if (error) {
+        this.pendingSegment_ = null;
+        this.state = 'READY'; // aborts are not a true error condition and nothing corrective needs to be done
+
+        if (error.code === REQUEST_ERRORS.ABORTED) {
+          return;
+        }
+        this.pause(); // the error is really just that at least one of the requests timed-out
+        // set the bandwidth to a very low value and trigger an ABR switch to
+        // take emergency action
+
+        if (error.code === REQUEST_ERRORS.TIMEOUT) {
+          this.handleTimeout_();
+          return;
+        } // if control-flow has arrived here, then the error is real
+        // emit an error event to exclude the current playlist
+
+        this.mediaRequestsErrored += 1;
+        this.error(error);
+        this.trigger('error');
+        return;
+      }
+      const segmentInfo = this.pendingSegment_; // the response was a success so set any bandwidth stats the request
+      // generated for ABR purposes
+
+      this.saveBandwidthRelatedStats_(segmentInfo.duration, simpleSegment.stats);
+      segmentInfo.endOfAllRequests = simpleSegment.endOfAllRequests;
+      if (result.gopInfo) {
+        this.gopBuffer_ = updateGopBuffer(this.gopBuffer_, result.gopInfo, this.safeAppend_);
+      } // Although we may have already started appending on progress, we shouldn't switch the
+      // state away from loading until we are officially done loading the segment data.
+
+      this.state = 'APPENDING'; // used for testing
+
+      this.trigger('appending');
+      this.waitForAppendsToComplete_(segmentInfo);
+    }
+    setTimeMapping_(timeline) {
+      const timelineMapping = this.syncController_.mappingForTimeline(timeline);
+      if (timelineMapping !== null) {
+        this.timeMapping_ = timelineMapping;
+      }
+    }
+    updateMediaSecondsLoaded_(segment) {
+      if (typeof segment.start === 'number' && typeof segment.end === 'number') {
+        this.mediaSecondsLoaded += segment.end - segment.start;
+      } else {
+        this.mediaSecondsLoaded += segment.duration;
+      }
+    }
+    shouldUpdateTransmuxerTimestampOffset_(timestampOffset) {
+      if (timestampOffset === null) {
+        return false;
+      } // note that we're potentially using the same timestamp offset for both video and
+      // audio
+
+      if (this.loaderType_ === 'main' && timestampOffset !== this.sourceUpdater_.videoTimestampOffset()) {
+        return true;
+      }
+      if (!this.audioDisabled_ && timestampOffset !== this.sourceUpdater_.audioTimestampOffset()) {
+        return true;
+      }
+      return false;
+    }
+    trueSegmentStart_({
+      currentStart,
+      playlist,
+      mediaIndex,
+      firstVideoFrameTimeForData,
+      currentVideoTimestampOffset,
+      useVideoTimingInfo,
+      videoTimingInfo,
+      audioTimingInfo
+    }) {
+      if (typeof currentStart !== 'undefined') {
+        // if start was set once, keep using it
+        return currentStart;
+      }
+      if (!useVideoTimingInfo) {
+        return audioTimingInfo.start;
+      }
+      const previousSegment = playlist.segments[mediaIndex - 1]; // The start of a segment should be the start of the first full frame contained
+      // within that segment. Since the transmuxer maintains a cache of incomplete data
+      // from and/or the last frame seen, the start time may reflect a frame that starts
+      // in the previous segment. Check for that case and ensure the start time is
+      // accurate for the segment.
+
+      if (mediaIndex === 0 || !previousSegment || typeof previousSegment.start === 'undefined' || previousSegment.end !== firstVideoFrameTimeForData + currentVideoTimestampOffset) {
+        return firstVideoFrameTimeForData;
+      }
+      return videoTimingInfo.start;
+    }
+    waitForAppendsToComplete_(segmentInfo) {
+      const trackInfo = this.getCurrentMediaInfo_(segmentInfo);
+      if (!trackInfo) {
+        this.error({
+          message: 'No starting media returned, likely due to an unsupported media format.',
+          playlistExclusionDuration: Infinity,
+          metadata: {
+            errorType: videojs.Error.SegmentUnsupportedMediaFormat
+          }
+        });
+        this.trigger('error');
+        return;
+      } // Although transmuxing is done, appends may not yet be finished. Throw a marker
+      // on each queue this loader is responsible for to ensure that the appends are
+      // complete.
+
+      const {
+        hasAudio,
+        hasVideo,
+        isMuxed
+      } = trackInfo;
+      const waitForVideo = this.loaderType_ === 'main' && hasVideo;
+      const waitForAudio = !this.audioDisabled_ && hasAudio && !isMuxed;
+      segmentInfo.waitingOnAppends = 0; // segments with no data
+
+      if (!segmentInfo.hasAppendedData_) {
+        if (!segmentInfo.timingInfo && typeof segmentInfo.timestampOffset === 'number') {
+          // When there's no audio or video data in the segment, there's no audio or video
+          // timing information.
+          //
+          // If there's no audio or video timing information, then the timestamp offset
+          // can't be adjusted to the appropriate value for the transmuxer and source
+          // buffers.
+          //
+          // Therefore, the next segment should be used to set the timestamp offset.
+          this.isPendingTimestampOffset_ = true;
+        } // override settings for metadata only segments
+
+        segmentInfo.timingInfo = {
+          start: 0
+        };
+        segmentInfo.waitingOnAppends++;
+        if (!this.isPendingTimestampOffset_) {
+          // update the timestampoffset
+          this.updateSourceBufferTimestampOffset_(segmentInfo); // make sure the metadata queue is processed even though we have
+          // no video/audio data.
+
+          this.processMetadataQueue_();
+        } // append is "done" instantly with no data.
+
+        this.checkAppendsDone_(segmentInfo);
+        return;
+      } // Since source updater could call back synchronously, do the increments first.
+
+      if (waitForVideo) {
+        segmentInfo.waitingOnAppends++;
+      }
+      if (waitForAudio) {
+        segmentInfo.waitingOnAppends++;
+      }
+      if (waitForVideo) {
+        this.sourceUpdater_.videoQueueCallback(this.checkAppendsDone_.bind(this, segmentInfo));
+      }
+      if (waitForAudio) {
+        this.sourceUpdater_.audioQueueCallback(this.checkAppendsDone_.bind(this, segmentInfo));
+      }
+    }
+    checkAppendsDone_(segmentInfo) {
+      if (this.checkForAbort_(segmentInfo.requestId)) {
+        return;
+      }
+      segmentInfo.waitingOnAppends--;
+      if (segmentInfo.waitingOnAppends === 0) {
+        this.handleAppendsDone_();
+      }
+    }
+    checkForIllegalMediaSwitch(trackInfo) {
+      const illegalMediaSwitchError = illegalMediaSwitch(this.loaderType_, this.getCurrentMediaInfo_(), trackInfo);
+      if (illegalMediaSwitchError) {
+        this.error({
+          message: illegalMediaSwitchError,
+          playlistExclusionDuration: Infinity,
+          metadata: {
+            errorType: videojs.Error.SegmentSwitchError
+          }
+        });
+        this.trigger('error');
+        return true;
+      }
+      return false;
+    }
+    updateSourceBufferTimestampOffset_(segmentInfo) {
+      if (segmentInfo.timestampOffset === null ||
+      // we don't yet have the start for whatever media type (video or audio) has
+      // priority, timing-wise, so we must wait
+      typeof segmentInfo.timingInfo.start !== 'number' ||
+      // already updated the timestamp offset for this segment
+      segmentInfo.changedTimestampOffset ||
+      // the alt audio loader should not be responsible for setting the timestamp offset
+      this.loaderType_ !== 'main') {
+        return;
+      }
+      let didChange = false; // Primary timing goes by video, and audio is trimmed in the transmuxer, meaning that
+      // the timing info here comes from video. In the event that the audio is longer than
+      // the video, this will trim the start of the audio.
+      // This also trims any offset from 0 at the beginning of the media
+
+      segmentInfo.timestampOffset -= this.getSegmentStartTimeForTimestampOffsetCalculation_({
+        videoTimingInfo: segmentInfo.segment.videoTimingInfo,
+        audioTimingInfo: segmentInfo.segment.audioTimingInfo,
+        timingInfo: segmentInfo.timingInfo
+      }); // In the event that there are part segment downloads, each will try to update the
+      // timestamp offset. Retaining this bit of state prevents us from updating in the
+      // future (within the same segment), however, there may be a better way to handle it.
+
+      segmentInfo.changedTimestampOffset = true;
+      if (segmentInfo.timestampOffset !== this.sourceUpdater_.videoTimestampOffset()) {
+        this.sourceUpdater_.videoTimestampOffset(segmentInfo.timestampOffset);
+        didChange = true;
+      }
+      if (segmentInfo.timestampOffset !== this.sourceUpdater_.audioTimestampOffset()) {
+        this.sourceUpdater_.audioTimestampOffset(segmentInfo.timestampOffset);
+        didChange = true;
+      }
+      if (didChange) {
+        this.trigger('timestampoffset');
+      }
+    }
+    getSegmentStartTimeForTimestampOffsetCalculation_({
+      videoTimingInfo,
+      audioTimingInfo,
+      timingInfo
+    }) {
+      if (!this.useDtsForTimestampOffset_) {
+        return timingInfo.start;
+      }
+      if (videoTimingInfo && typeof videoTimingInfo.transmuxedDecodeStart === 'number') {
+        return videoTimingInfo.transmuxedDecodeStart;
+      } // handle audio only
+
+      if (audioTimingInfo && typeof audioTimingInfo.transmuxedDecodeStart === 'number') {
+        return audioTimingInfo.transmuxedDecodeStart;
+      } // handle content not transmuxed (e.g., MP4)
+
+      return timingInfo.start;
+    }
+    updateTimingInfoEnd_(segmentInfo) {
+      segmentInfo.timingInfo = segmentInfo.timingInfo || {};
+      const trackInfo = this.getMediaInfo_();
+      const useVideoTimingInfo = this.loaderType_ === 'main' && trackInfo && trackInfo.hasVideo;
+      const prioritizedTimingInfo = useVideoTimingInfo && segmentInfo.videoTimingInfo ? segmentInfo.videoTimingInfo : segmentInfo.audioTimingInfo;
+      if (!prioritizedTimingInfo) {
+        return;
+      }
+      segmentInfo.timingInfo.end = typeof prioritizedTimingInfo.end === 'number' ?
+      // End time may not exist in a case where we aren't parsing the full segment (one
+      // current example is the case of fmp4), so use the rough duration to calculate an
+      // end time.
+      prioritizedTimingInfo.end : prioritizedTimingInfo.start + segmentInfo.duration;
+    }
+    /**
+     * callback to run when appendBuffer is finished. detects if we are
+     * in a good state to do things with the data we got, or if we need
+     * to wait for more
+     *
+     * @private
+     */
+
+    handleAppendsDone_() {
+      // appendsdone can cause an abort
+      if (this.pendingSegment_) {
+        this.trigger('appendsdone');
+      }
+      if (!this.pendingSegment_) {
+        this.state = 'READY'; // TODO should this move into this.checkForAbort to speed up requests post abort in
+        // all appending cases?
+
+        if (!this.paused()) {
+          this.monitorBuffer_();
+        }
+        return;
+      }
+      const segmentInfo = this.pendingSegment_;
+      if (segmentInfo.part && segmentInfo.part.syncInfo) {
+        // low-latency flow
+        segmentInfo.part.syncInfo.markAppended();
+      } else if (segmentInfo.segment.syncInfo) {
+        // normal flow
+        segmentInfo.segment.syncInfo.markAppended();
+      } // Now that the end of the segment has been reached, we can set the end time. It's
+      // best to wait until all appends are done so we're sure that the primary media is
+      // finished (and we have its end time).
+
+      this.updateTimingInfoEnd_(segmentInfo);
+      if (this.shouldSaveSegmentTimingInfo_) {
+        // Timeline mappings should only be saved for the main loader. This is for multiple
+        // reasons:
+        //
+        // 1) Only one mapping is saved per timeline, meaning that if both the audio loader
+        //    and the main loader try to save the timeline mapping, whichever comes later
+        //    will overwrite the first. In theory this is OK, as the mappings should be the
+        //    same, however, it breaks for (2)
+        // 2) In the event of a live stream, the initial live point will make for a somewhat
+        //    arbitrary mapping. If audio and video streams are not perfectly in-sync, then
+        //    the mapping will be off for one of the streams, dependent on which one was
+        //    first saved (see (1)).
+        // 3) Primary timing goes by video in VHS, so the mapping should be video.
+        //
+        // Since the audio loader will wait for the main loader to load the first segment,
+        // the main loader will save the first timeline mapping, and ensure that there won't
+        // be a case where audio loads two segments without saving a mapping (thus leading
+        // to missing segment timing info).
+        this.syncController_.saveSegmentTimingInfo({
+          segmentInfo,
+          shouldSaveTimelineMapping: this.loaderType_ === 'main'
+        });
+      }
+      const segmentDurationMessage = getTroublesomeSegmentDurationMessage(segmentInfo, this.sourceType_);
+      if (segmentDurationMessage) {
+        if (segmentDurationMessage.severity === 'warn') {
+          videojs.log.warn(segmentDurationMessage.message);
+        } else {
+          this.logger_(segmentDurationMessage.message);
+        }
+      }
+      this.recordThroughput_(segmentInfo);
+      this.pendingSegment_ = null;
+      this.state = 'READY';
+      if (segmentInfo.isSyncRequest) {
+        this.trigger('syncinfoupdate'); // if the sync request was not appended
+        // then it was not the correct segment.
+        // throw it away and use the data it gave us
+        // to get the correct one.
+
+        if (!segmentInfo.hasAppendedData_) {
+          this.logger_(`Throwing away un-appended sync request ${segmentInfoString(segmentInfo)}`);
+          return;
+        }
+      }
+      this.logger_(`Appended ${segmentInfoString(segmentInfo)}`);
+      this.addSegmentMetadataCue_(segmentInfo);
+      this.fetchAtBuffer_ = true;
+      if (this.currentTimeline_ !== segmentInfo.timeline) {
+        this.timelineChangeController_.lastTimelineChange({
+          type: this.loaderType_,
+          from: this.currentTimeline_,
+          to: segmentInfo.timeline
+        }); // If audio is not disabled, the main segment loader is responsible for updating
+        // the audio timeline as well. If the content is video only, this won't have any
+        // impact.
+
+        if (this.loaderType_ === 'main' && !this.audioDisabled_) {
+          this.timelineChangeController_.lastTimelineChange({
+            type: 'audio',
+            from: this.currentTimeline_,
+            to: segmentInfo.timeline
+          });
+        }
+      }
+      this.currentTimeline_ = segmentInfo.timeline; // We must update the syncinfo to recalculate the seekable range before
+      // the following conditional otherwise it may consider this a bad "guess"
+      // and attempt to resync when the post-update seekable window and live
+      // point would mean that this was the perfect segment to fetch
+
+      this.trigger('syncinfoupdate');
+      const segment = segmentInfo.segment;
+      const part = segmentInfo.part;
+      const badSegmentGuess = segment.end && this.currentTime_() - segment.end > segmentInfo.playlist.targetDuration * 3;
+      const badPartGuess = part && part.end && this.currentTime_() - part.end > segmentInfo.playlist.partTargetDuration * 3; // If we previously appended a segment/part that ends more than 3 part/targetDurations before
+      // the currentTime_ that means that our conservative guess was too conservative.
+      // In that case, reset the loader state so that we try to use any information gained
+      // from the previous request to create a new, more accurate, sync-point.
+
+      if (badSegmentGuess || badPartGuess) {
+        this.logger_(`bad ${badSegmentGuess ? 'segment' : 'part'} ${segmentInfoString(segmentInfo)}`);
+        this.resetEverything();
+        return;
+      }
+      const isWalkingForward = this.mediaIndex !== null; // Don't do a rendition switch unless we have enough time to get a sync segment
+      // and conservatively guess
+
+      if (isWalkingForward) {
+        this.trigger('bandwidthupdate');
+      }
+      this.trigger('progress');
+      this.mediaIndex = segmentInfo.mediaIndex;
+      this.partIndex = segmentInfo.partIndex; // any time an update finishes and the last segment is in the
+      // buffer, end the stream. this ensures the "ended" event will
+      // fire if playback reaches that point.
+
+      if (this.isEndOfStream_(segmentInfo.mediaIndex, segmentInfo.playlist, segmentInfo.partIndex)) {
+        this.endOfStream();
+      } // used for testing
+
+      this.trigger('appended');
+      if (segmentInfo.hasAppendedData_) {
+        this.mediaAppends++;
+      }
+      if (!this.paused()) {
+        this.monitorBuffer_();
+      }
+    }
+    /**
+     * Records the current throughput of the decrypt, transmux, and append
+     * portion of the semgment pipeline. `throughput.rate` is a the cumulative
+     * moving average of the throughput. `throughput.count` is the number of
+     * data points in the average.
+     *
+     * @private
+     * @param {Object} segmentInfo the object returned by loadSegment
+     */
+
+    recordThroughput_(segmentInfo) {
+      if (segmentInfo.duration < MIN_SEGMENT_DURATION_TO_SAVE_STATS) {
+        this.logger_(`Ignoring segment's throughput because its duration of ${segmentInfo.duration}` + ` is less than the min to record ${MIN_SEGMENT_DURATION_TO_SAVE_STATS}`);
+        return;
+      }
+      const rate = this.throughput.rate; // Add one to the time to ensure that we don't accidentally attempt to divide
+      // by zero in the case where the throughput is ridiculously high
+
+      const segmentProcessingTime = Date.now() - segmentInfo.endOfAllRequests + 1; // Multiply by 8000 to convert from bytes/millisecond to bits/second
+
+      const segmentProcessingThroughput = Math.floor(segmentInfo.byteLength / segmentProcessingTime * 8 * 1000); // This is just a cumulative moving average calculation:
+      //   newAvg = oldAvg + (sample - oldAvg) / (sampleCount + 1)
+
+      this.throughput.rate += (segmentProcessingThroughput - rate) / ++this.throughput.count;
+    }
+    /**
+     * Adds a cue to the segment-metadata track with some metadata information about the
+     * segment
+     *
+     * @private
+     * @param {Object} segmentInfo
+     *        the object returned by loadSegment
+     * @method addSegmentMetadataCue_
+     */
+
+    addSegmentMetadataCue_(segmentInfo) {
+      if (!this.segmentMetadataTrack_) {
+        return;
+      }
+      const segment = segmentInfo.segment;
+      const start = segment.start;
+      const end = segment.end; // Do not try adding the cue if the start and end times are invalid.
+
+      if (!finite(start) || !finite(end)) {
+        return;
+      }
+      removeCuesFromTrack(start, end, this.segmentMetadataTrack_);
+      const Cue = window.WebKitDataCue || window.VTTCue;
+      const value = {
+        custom: segment.custom,
+        dateTimeObject: segment.dateTimeObject,
+        dateTimeString: segment.dateTimeString,
+        programDateTime: segment.programDateTime,
+        bandwidth: segmentInfo.playlist.attributes.BANDWIDTH,
+        resolution: segmentInfo.playlist.attributes.RESOLUTION,
+        codecs: segmentInfo.playlist.attributes.CODECS,
+        byteLength: segmentInfo.byteLength,
+        uri: segmentInfo.uri,
+        timeline: segmentInfo.timeline,
+        playlist: segmentInfo.playlist.id,
+        start,
+        end
+      };
+      const data = JSON.stringify(value);
+      const cue = new Cue(start, end, data); // Attach the metadata to the value property of the cue to keep consistency between
+      // the differences of WebKitDataCue in safari and VTTCue in other browsers
+
+      cue.value = value;
+      this.segmentMetadataTrack_.addCue(cue);
+    }
+  }
+  function noop() {}
+  const toTitleCase = function (string) {
+    if (typeof string !== 'string') {
+      return string;
+    }
+    return string.replace(/./, w => w.toUpperCase());
+  };
+
+  /**
+   * @file source-updater.js
+   */
+  const bufferTypes = ['video', 'audio'];
+  const updating = (type, sourceUpdater) => {
+    const sourceBuffer = sourceUpdater[`${type}Buffer`];
+    return sourceBuffer && sourceBuffer.updating || sourceUpdater.queuePending[type];
+  };
+  const nextQueueIndexOfType = (type, queue) => {
+    for (let i = 0; i < queue.length; i++) {
+      const queueEntry = queue[i];
+      if (queueEntry.type === 'mediaSource') {
+        // If the next entry is a media source entry (uses multiple source buffers), block
+        // processing to allow it to go through first.
+        return null;
+      }
+      if (queueEntry.type === type) {
+        return i;
+      }
+    }
+    return null;
+  };
+  const shiftQueue = (type, sourceUpdater) => {
+    if (sourceUpdater.queue.length === 0) {
+      return;
+    }
+    let queueIndex = 0;
+    let queueEntry = sourceUpdater.queue[queueIndex];
+    if (queueEntry.type === 'mediaSource') {
+      if (!sourceUpdater.updating() && sourceUpdater.mediaSource.readyState !== 'closed') {
+        sourceUpdater.queue.shift();
+        queueEntry.action(sourceUpdater);
+        if (queueEntry.doneFn) {
+          queueEntry.doneFn();
+        } // Only specific source buffer actions must wait for async updateend events. Media
+        // Source actions process synchronously. Therefore, both audio and video source
+        // buffers are now clear to process the next queue entries.
+
+        shiftQueue('audio', sourceUpdater);
+        shiftQueue('video', sourceUpdater);
+      } // Media Source actions require both source buffers, so if the media source action
+      // couldn't process yet (because one or both source buffers are busy), block other
+      // queue actions until both are available and the media source action can process.
+
+      return;
+    }
+    if (type === 'mediaSource') {
+      // If the queue was shifted by a media source action (this happens when pushing a
+      // media source action onto the queue), then it wasn't from an updateend event from an
+      // audio or video source buffer, so there's no change from previous state, and no
+      // processing should be done.
+      return;
+    } // Media source queue entries don't need to consider whether the source updater is
+    // started (i.e., source buffers are created) as they don't need the source buffers, but
+    // source buffer queue entries do.
+
+    if (!sourceUpdater.ready() || sourceUpdater.mediaSource.readyState === 'closed' || updating(type, sourceUpdater)) {
+      return;
+    }
+    if (queueEntry.type !== type) {
+      queueIndex = nextQueueIndexOfType(type, sourceUpdater.queue);
+      if (queueIndex === null) {
+        // Either there's no queue entry that uses this source buffer type in the queue, or
+        // there's a media source queue entry before the next entry of this type, in which
+        // case wait for that action to process first.
+        return;
+      }
+      queueEntry = sourceUpdater.queue[queueIndex];
+    }
+    sourceUpdater.queue.splice(queueIndex, 1); // Keep a record that this source buffer type is in use.
+    //
+    // The queue pending operation must be set before the action is performed in the event
+    // that the action results in a synchronous event that is acted upon. For instance, if
+    // an exception is thrown that can be handled, it's possible that new actions will be
+    // appended to an empty queue and immediately executed, but would not have the correct
+    // pending information if this property was set after the action was performed.
+
+    sourceUpdater.queuePending[type] = queueEntry;
+    queueEntry.action(type, sourceUpdater);
+    if (!queueEntry.doneFn) {
+      // synchronous operation, process next entry
+      sourceUpdater.queuePending[type] = null;
+      shiftQueue(type, sourceUpdater);
+      return;
+    }
+  };
+  const cleanupBuffer = (type, sourceUpdater) => {
+    const buffer = sourceUpdater[`${type}Buffer`];
+    const titleType = toTitleCase(type);
+    if (!buffer) {
+      return;
+    }
+    buffer.removeEventListener('updateend', sourceUpdater[`on${titleType}UpdateEnd_`]);
+    buffer.removeEventListener('error', sourceUpdater[`on${titleType}Error_`]);
+    sourceUpdater.codecs[type] = null;
+    sourceUpdater[`${type}Buffer`] = null;
+  };
+  const inSourceBuffers = (mediaSource, sourceBuffer) => mediaSource && sourceBuffer && Array.prototype.indexOf.call(mediaSource.sourceBuffers, sourceBuffer) !== -1;
+  const actions = {
+    appendBuffer: (bytes, segmentInfo, onError) => (type, sourceUpdater) => {
+      const sourceBuffer = sourceUpdater[`${type}Buffer`]; // can't do anything if the media source / source buffer is null
+      // or the media source does not contain this source buffer.
+
+      if (!inSourceBuffers(sourceUpdater.mediaSource, sourceBuffer)) {
+        return;
+      }
+      sourceUpdater.logger_(`Appending segment ${segmentInfo.mediaIndex}'s ${bytes.length} bytes to ${type}Buffer`);
+      try {
+        sourceBuffer.appendBuffer(bytes);
+      } catch (e) {
+        sourceUpdater.logger_(`Error with code ${e.code} ` + (e.code === QUOTA_EXCEEDED_ERR ? '(QUOTA_EXCEEDED_ERR) ' : '') + `when appending segment ${segmentInfo.mediaIndex} to ${type}Buffer`);
+        sourceUpdater.queuePending[type] = null;
+        onError(e);
+      }
+    },
+    remove: (start, end) => (type, sourceUpdater) => {
+      const sourceBuffer = sourceUpdater[`${type}Buffer`]; // can't do anything if the media source / source buffer is null
+      // or the media source does not contain this source buffer.
+
+      if (!inSourceBuffers(sourceUpdater.mediaSource, sourceBuffer)) {
+        return;
+      }
+      sourceUpdater.logger_(`Removing ${start} to ${end} from ${type}Buffer`);
+      try {
+        sourceBuffer.remove(start, end);
+      } catch (e) {
+        sourceUpdater.logger_(`Remove ${start} to ${end} from ${type}Buffer failed`);
+      }
+    },
+    timestampOffset: offset => (type, sourceUpdater) => {
+      const sourceBuffer = sourceUpdater[`${type}Buffer`]; // can't do anything if the media source / source buffer is null
+      // or the media source does not contain this source buffer.
+
+      if (!inSourceBuffers(sourceUpdater.mediaSource, sourceBuffer)) {
+        return;
+      }
+      sourceUpdater.logger_(`Setting ${type}timestampOffset to ${offset}`);
+      sourceBuffer.timestampOffset = offset;
+    },
+    callback: callback => (type, sourceUpdater) => {
+      callback();
+    },
+    endOfStream: error => sourceUpdater => {
+      if (sourceUpdater.mediaSource.readyState !== 'open') {
+        return;
+      }
+      sourceUpdater.logger_(`Calling mediaSource endOfStream(${error || ''})`);
+      try {
+        sourceUpdater.mediaSource.endOfStream(error);
+      } catch (e) {
+        videojs.log.warn('Failed to call media source endOfStream', e);
+      }
+    },
+    duration: duration => sourceUpdater => {
+      sourceUpdater.logger_(`Setting mediaSource duration to ${duration}`);
+      try {
+        sourceUpdater.mediaSource.duration = duration;
+      } catch (e) {
+        videojs.log.warn('Failed to set media source duration', e);
+      }
+    },
+    abort: () => (type, sourceUpdater) => {
+      if (sourceUpdater.mediaSource.readyState !== 'open') {
+        return;
+      }
+      const sourceBuffer = sourceUpdater[`${type}Buffer`]; // can't do anything if the media source / source buffer is null
+      // or the media source does not contain this source buffer.
+
+      if (!inSourceBuffers(sourceUpdater.mediaSource, sourceBuffer)) {
+        return;
+      }
+      sourceUpdater.logger_(`calling abort on ${type}Buffer`);
+      try {
+        sourceBuffer.abort();
+      } catch (e) {
+        videojs.log.warn(`Failed to abort on ${type}Buffer`, e);
+      }
+    },
+    addSourceBuffer: (type, codec) => sourceUpdater => {
+      const titleType = toTitleCase(type);
+      const mime = getMimeForCodec(codec);
+      sourceUpdater.logger_(`Adding ${type}Buffer with codec ${codec} to mediaSource`);
+      const sourceBuffer = sourceUpdater.mediaSource.addSourceBuffer(mime);
+      sourceBuffer.addEventListener('updateend', sourceUpdater[`on${titleType}UpdateEnd_`]);
+      sourceBuffer.addEventListener('error', sourceUpdater[`on${titleType}Error_`]);
+      sourceUpdater.codecs[type] = codec;
+      sourceUpdater[`${type}Buffer`] = sourceBuffer;
+    },
+    removeSourceBuffer: type => sourceUpdater => {
+      const sourceBuffer = sourceUpdater[`${type}Buffer`];
+      cleanupBuffer(type, sourceUpdater); // can't do anything if the media source / source buffer is null
+      // or the media source does not contain this source buffer.
+
+      if (!inSourceBuffers(sourceUpdater.mediaSource, sourceBuffer)) {
+        return;
+      }
+      sourceUpdater.logger_(`Removing ${type}Buffer with codec ${sourceUpdater.codecs[type]} from mediaSource`);
+      try {
+        sourceUpdater.mediaSource.removeSourceBuffer(sourceBuffer);
+      } catch (e) {
+        videojs.log.warn(`Failed to removeSourceBuffer ${type}Buffer`, e);
+      }
+    },
+    changeType: codec => (type, sourceUpdater) => {
+      const sourceBuffer = sourceUpdater[`${type}Buffer`];
+      const mime = getMimeForCodec(codec); // can't do anything if the media source / source buffer is null
+      // or the media source does not contain this source buffer.
+
+      if (!inSourceBuffers(sourceUpdater.mediaSource, sourceBuffer)) {
+        return;
+      } // do not update codec if we don't need to.
+      // Only update if we change the codec base.
+      // For example, going from avc1.640028 to avc1.64001f does not require a changeType call.
+
+      const newCodecBase = codec.substring(0, codec.indexOf('.'));
+      const oldCodec = sourceUpdater.codecs[type];
+      const oldCodecBase = oldCodec.substring(0, oldCodec.indexOf('.'));
+      if (oldCodecBase === newCodecBase) {
+        return;
+      }
+      sourceUpdater.logger_(`changing ${type}Buffer codec from ${sourceUpdater.codecs[type]} to ${codec}`); // check if change to the provided type is supported
+
+      try {
+        sourceBuffer.changeType(mime);
+        sourceUpdater.codecs[type] = codec;
+      } catch (e) {
+        videojs.log.warn(`Failed to changeType on ${type}Buffer`, e);
+      }
+    }
+  };
+  const pushQueue = ({
+    type,
+    sourceUpdater,
+    action,
+    doneFn,
+    name
+  }) => {
+    sourceUpdater.queue.push({
+      type,
+      action,
+      doneFn,
+      name
+    });
+    shiftQueue(type, sourceUpdater);
+  };
+  const onUpdateend = (type, sourceUpdater) => e => {
+    // Although there should, in theory, be a pending action for any updateend receieved,
+    // there are some actions that may trigger updateend events without set definitions in
+    // the w3c spec. For instance, setting the duration on the media source may trigger
+    // updateend events on source buffers. This does not appear to be in the spec. As such,
+    // if we encounter an updateend without a corresponding pending action from our queue
+    // for that source buffer type, process the next action.
+    const bufferedRangesForType = sourceUpdater[`${type}Buffered`]();
+    const descriptiveString = bufferedRangesToString(bufferedRangesForType);
+    sourceUpdater.logger_(`received "updateend" event for ${type} Source Buffer: `, descriptiveString);
+    if (sourceUpdater.queuePending[type]) {
+      const doneFn = sourceUpdater.queuePending[type].doneFn;
+      sourceUpdater.queuePending[type] = null;
+      if (doneFn) {
+        // if there's an error, report it
+        doneFn(sourceUpdater[`${type}Error_`]);
+      }
+    }
+    shiftQueue(type, sourceUpdater);
+  };
+  /**
+   * A queue of callbacks to be serialized and applied when a
+   * MediaSource and its associated SourceBuffers are not in the
+   * updating state. It is used by the segment loader to update the
+   * underlying SourceBuffers when new data is loaded, for instance.
+   *
+   * @class SourceUpdater
+   * @param {MediaSource} mediaSource the MediaSource to create the SourceBuffer from
+   * @param {string} mimeType the desired MIME type of the underlying SourceBuffer
+   */
+
+  class SourceUpdater extends videojs.EventTarget {
+    constructor(mediaSource) {
+      super();
+      this.mediaSource = mediaSource;
+      this.sourceopenListener_ = () => shiftQueue('mediaSource', this);
+      this.mediaSource.addEventListener('sourceopen', this.sourceopenListener_);
+      this.logger_ = logger('SourceUpdater'); // initial timestamp offset is 0
+
+      this.audioTimestampOffset_ = 0;
+      this.videoTimestampOffset_ = 0;
+      this.queue = [];
+      this.queuePending = {
+        audio: null,
+        video: null
+      };
+      this.delayedAudioAppendQueue_ = [];
+      this.videoAppendQueued_ = false;
+      this.codecs = {};
+      this.onVideoUpdateEnd_ = onUpdateend('video', this);
+      this.onAudioUpdateEnd_ = onUpdateend('audio', this);
+      this.onVideoError_ = e => {
+        // used for debugging
+        this.videoError_ = e;
+      };
+      this.onAudioError_ = e => {
+        // used for debugging
+        this.audioError_ = e;
+      };
+      this.createdSourceBuffers_ = false;
+      this.initializedEme_ = false;
+      this.triggeredReady_ = false;
+    }
+    initializedEme() {
+      this.initializedEme_ = true;
+      this.triggerReady();
+    }
+    hasCreatedSourceBuffers() {
+      // if false, likely waiting on one of the segment loaders to get enough data to create
+      // source buffers
+      return this.createdSourceBuffers_;
+    }
+    hasInitializedAnyEme() {
+      return this.initializedEme_;
+    }
+    ready() {
+      return this.hasCreatedSourceBuffers() && this.hasInitializedAnyEme();
+    }
+    createSourceBuffers(codecs) {
+      if (this.hasCreatedSourceBuffers()) {
+        // already created them before
+        return;
+      } // the intial addOrChangeSourceBuffers will always be
+      // two add buffers.
+
+      this.addOrChangeSourceBuffers(codecs);
+      this.createdSourceBuffers_ = true;
+      this.trigger('createdsourcebuffers');
+      this.triggerReady();
+    }
+    triggerReady() {
+      // only allow ready to be triggered once, this prevents the case
+      // where:
+      // 1. we trigger createdsourcebuffers
+      // 2. ie 11 synchronously initializates eme
+      // 3. the synchronous initialization causes us to trigger ready
+      // 4. We go back to the ready check in createSourceBuffers and ready is triggered again.
+      if (this.ready() && !this.triggeredReady_) {
+        this.triggeredReady_ = true;
+        this.trigger('ready');
+      }
+    }
+    /**
+     * Add a type of source buffer to the media source.
+     *
+     * @param {string} type
+     *        The type of source buffer to add.
+     *
+     * @param {string} codec
+     *        The codec to add the source buffer with.
+     */
+
+    addSourceBuffer(type, codec) {
+      pushQueue({
+        type: 'mediaSource',
+        sourceUpdater: this,
+        action: actions.addSourceBuffer(type, codec),
+        name: 'addSourceBuffer'
+      });
+    }
+    /**
+     * call abort on a source buffer.
+     *
+     * @param {string} type
+     *        The type of source buffer to call abort on.
+     */
+
+    abort(type) {
+      pushQueue({
+        type,
+        sourceUpdater: this,
+        action: actions.abort(type),
+        name: 'abort'
+      });
+    }
+    /**
+     * Call removeSourceBuffer and remove a specific type
+     * of source buffer on the mediaSource.
+     *
+     * @param {string} type
+     *        The type of source buffer to remove.
+     */
+
+    removeSourceBuffer(type) {
+      if (!this.canRemoveSourceBuffer()) {
+        videojs.log.error('removeSourceBuffer is not supported!');
+        return;
+      }
+      pushQueue({
+        type: 'mediaSource',
+        sourceUpdater: this,
+        action: actions.removeSourceBuffer(type),
+        name: 'removeSourceBuffer'
+      });
+    }
+    /**
+     * Whether or not the removeSourceBuffer function is supported
+     * on the mediaSource.
+     *
+     * @return {boolean}
+     *          if removeSourceBuffer can be called.
+     */
+
+    canRemoveSourceBuffer() {
+      // As of Firefox 83 removeSourceBuffer
+      // throws errors, so we report that it does not support this.
+      return !videojs.browser.IS_FIREFOX && window.MediaSource && window.MediaSource.prototype && typeof window.MediaSource.prototype.removeSourceBuffer === 'function';
+    }
+    /**
+     * Whether or not the changeType function is supported
+     * on our SourceBuffers.
+     *
+     * @return {boolean}
+     *         if changeType can be called.
+     */
+
+    static canChangeType() {
+      return window.SourceBuffer && window.SourceBuffer.prototype && typeof window.SourceBuffer.prototype.changeType === 'function';
+    }
+    /**
+     * Whether or not the changeType function is supported
+     * on our SourceBuffers.
+     *
+     * @return {boolean}
+     *         if changeType can be called.
+     */
+
+    canChangeType() {
+      return this.constructor.canChangeType();
+    }
+    /**
+     * Call the changeType function on a source buffer, given the code and type.
+     *
+     * @param {string} type
+     *        The type of source buffer to call changeType on.
+     *
+     * @param {string} codec
+     *        The codec string to change type with on the source buffer.
+     */
+
+    changeType(type, codec) {
+      if (!this.canChangeType()) {
+        videojs.log.error('changeType is not supported!');
+        return;
+      }
+      pushQueue({
+        type,
+        sourceUpdater: this,
+        action: actions.changeType(codec),
+        name: 'changeType'
+      });
+    }
+    /**
+     * Add source buffers with a codec or, if they are already created,
+     * call changeType on source buffers using changeType.
+     *
+     * @param {Object} codecs
+     *        Codecs to switch to
+     */
+
+    addOrChangeSourceBuffers(codecs) {
+      if (!codecs || typeof codecs !== 'object' || Object.keys(codecs).length === 0) {
+        throw new Error('Cannot addOrChangeSourceBuffers to undefined codecs');
+      }
+      Object.keys(codecs).forEach(type => {
+        const codec = codecs[type];
+        if (!this.hasCreatedSourceBuffers()) {
+          return this.addSourceBuffer(type, codec);
+        }
+        if (this.canChangeType()) {
+          this.changeType(type, codec);
+        }
+      });
+    }
+    /**
+     * Queue an update to append an ArrayBuffer.
+     *
+     * @param {MediaObject} object containing audioBytes and/or videoBytes
+     * @param {Function} done the function to call when done
+     * @see http://www.w3.org/TR/media-source/#widl-SourceBuffer-appendBuffer-void-ArrayBuffer-data
+     */
+
+    appendBuffer(options, doneFn) {
+      const {
+        segmentInfo,
+        type,
+        bytes
+      } = options;
+      this.processedAppend_ = true;
+      if (type === 'audio' && this.videoBuffer && !this.videoAppendQueued_) {
+        this.delayedAudioAppendQueue_.push([options, doneFn]);
+        this.logger_(`delayed audio append of ${bytes.length} until video append`);
+        return;
+      } // In the case of certain errors, for instance, QUOTA_EXCEEDED_ERR, updateend will
+      // not be fired. This means that the queue will be blocked until the next action
+      // taken by the segment-loader. Provide a mechanism for segment-loader to handle
+      // these errors by calling the doneFn with the specific error.
+
+      const onError = doneFn;
+      pushQueue({
+        type,
+        sourceUpdater: this,
+        action: actions.appendBuffer(bytes, segmentInfo || {
+          mediaIndex: -1
+        }, onError),
+        doneFn,
+        name: 'appendBuffer'
+      });
+      if (type === 'video') {
+        this.videoAppendQueued_ = true;
+        if (!this.delayedAudioAppendQueue_.length) {
+          return;
+        }
+        const queue = this.delayedAudioAppendQueue_.slice();
+        this.logger_(`queuing delayed audio ${queue.length} appendBuffers`);
+        this.delayedAudioAppendQueue_.length = 0;
+        queue.forEach(que => {
+          this.appendBuffer.apply(this, que);
+        });
+      }
+    }
+    /**
+     * Get the audio buffer's buffered timerange.
+     *
+     * @return {TimeRange}
+     *         The audio buffer's buffered time range
+     */
+
+    audioBuffered() {
+      // no media source/source buffer or it isn't in the media sources
+      // source buffer list
+      if (!inSourceBuffers(this.mediaSource, this.audioBuffer)) {
+        return createTimeRanges();
+      }
+      return this.audioBuffer.buffered ? this.audioBuffer.buffered : createTimeRanges();
+    }
+    /**
+     * Get the video buffer's buffered timerange.
+     *
+     * @return {TimeRange}
+     *         The video buffer's buffered time range
+     */
+
+    videoBuffered() {
+      // no media source/source buffer or it isn't in the media sources
+      // source buffer list
+      if (!inSourceBuffers(this.mediaSource, this.videoBuffer)) {
+        return createTimeRanges();
+      }
+      return this.videoBuffer.buffered ? this.videoBuffer.buffered : createTimeRanges();
+    }
+    /**
+     * Get a combined video/audio buffer's buffered timerange.
+     *
+     * @return {TimeRange}
+     *         the combined time range
+     */
+
+    buffered() {
+      const video = inSourceBuffers(this.mediaSource, this.videoBuffer) ? this.videoBuffer : null;
+      const audio = inSourceBuffers(this.mediaSource, this.audioBuffer) ? this.audioBuffer : null;
+      if (audio && !video) {
+        return this.audioBuffered();
+      }
+      if (video && !audio) {
+        return this.videoBuffered();
+      }
+      return bufferIntersection(this.audioBuffered(), this.videoBuffered());
+    }
+    /**
+     * Add a callback to the queue that will set duration on the mediaSource.
+     *
+     * @param {number} duration
+     *        The duration to set
+     *
+     * @param {Function} [doneFn]
+     *        function to run after duration has been set.
+     */
+
+    setDuration(duration, doneFn = noop) {
+      // In order to set the duration on the media source, it's necessary to wait for all
+      // source buffers to no longer be updating. "If the updating attribute equals true on
+      // any SourceBuffer in sourceBuffers, then throw an InvalidStateError exception and
+      // abort these steps." (source: https://www.w3.org/TR/media-source/#attributes).
+      pushQueue({
+        type: 'mediaSource',
+        sourceUpdater: this,
+        action: actions.duration(duration),
+        name: 'duration',
+        doneFn
+      });
+    }
+    /**
+     * Add a mediaSource endOfStream call to the queue
+     *
+     * @param {Error} [error]
+     *        Call endOfStream with an error
+     *
+     * @param {Function} [doneFn]
+     *        A function that should be called when the
+     *        endOfStream call has finished.
+     */
+
+    endOfStream(error = null, doneFn = noop) {
+      if (typeof error !== 'string') {
+        error = undefined;
+      } // In order to set the duration on the media source, it's necessary to wait for all
+      // source buffers to no longer be updating. "If the updating attribute equals true on
+      // any SourceBuffer in sourceBuffers, then throw an InvalidStateError exception and
+      // abort these steps." (source: https://www.w3.org/TR/media-source/#attributes).
+
+      pushQueue({
+        type: 'mediaSource',
+        sourceUpdater: this,
+        action: actions.endOfStream(error),
+        name: 'endOfStream',
+        doneFn
+      });
+    }
+    /**
+     * Queue an update to remove a time range from the buffer.
+     *
+     * @param {number} start where to start the removal
+     * @param {number} end where to end the removal
+     * @param {Function} [done=noop] optional callback to be executed when the remove
+     * operation is complete
+     * @see http://www.w3.org/TR/media-source/#widl-SourceBuffer-remove-void-double-start-unrestricted-double-end
+     */
+
+    removeAudio(start, end, done = noop) {
+      if (!this.audioBuffered().length || this.audioBuffered().end(0) === 0) {
+        done();
+        return;
+      }
+      pushQueue({
+        type: 'audio',
+        sourceUpdater: this,
+        action: actions.remove(start, end),
+        doneFn: done,
+        name: 'remove'
+      });
+    }
+    /**
+     * Queue an update to remove a time range from the buffer.
+     *
+     * @param {number} start where to start the removal
+     * @param {number} end where to end the removal
+     * @param {Function} [done=noop] optional callback to be executed when the remove
+     * operation is complete
+     * @see http://www.w3.org/TR/media-source/#widl-SourceBuffer-remove-void-double-start-unrestricted-double-end
+     */
+
+    removeVideo(start, end, done = noop) {
+      if (!this.videoBuffered().length || this.videoBuffered().end(0) === 0) {
+        done();
+        return;
+      }
+      pushQueue({
+        type: 'video',
+        sourceUpdater: this,
+        action: actions.remove(start, end),
+        doneFn: done,
+        name: 'remove'
+      });
+    }
+    /**
+     * Whether the underlying sourceBuffer is updating or not
+     *
+     * @return {boolean} the updating status of the SourceBuffer
+     */
+
+    updating() {
+      // the audio/video source buffer is updating
+      if (updating('audio', this) || updating('video', this)) {
+        return true;
+      }
+      return false;
+    }
+    /**
+     * Set/get the timestampoffset on the audio SourceBuffer
+     *
+     * @return {number} the timestamp offset
+     */
+
+    audioTimestampOffset(offset) {
+      if (typeof offset !== 'undefined' && this.audioBuffer &&
+      // no point in updating if it's the same
+      this.audioTimestampOffset_ !== offset) {
+        pushQueue({
+          type: 'audio',
+          sourceUpdater: this,
+          action: actions.timestampOffset(offset),
+          name: 'timestampOffset'
+        });
+        this.audioTimestampOffset_ = offset;
+      }
+      return this.audioTimestampOffset_;
+    }
+    /**
+     * Set/get the timestampoffset on the video SourceBuffer
+     *
+     * @return {number} the timestamp offset
+     */
+
+    videoTimestampOffset(offset) {
+      if (typeof offset !== 'undefined' && this.videoBuffer &&
+      // no point in updating if it's the same
+      this.videoTimestampOffset !== offset) {
+        pushQueue({
+          type: 'video',
+          sourceUpdater: this,
+          action: actions.timestampOffset(offset),
+          name: 'timestampOffset'
+        });
+        this.videoTimestampOffset_ = offset;
+      }
+      return this.videoTimestampOffset_;
+    }
+    /**
+     * Add a function to the queue that will be called
+     * when it is its turn to run in the audio queue.
+     *
+     * @param {Function} callback
+     *        The callback to queue.
+     */
+
+    audioQueueCallback(callback) {
+      if (!this.audioBuffer) {
+        return;
+      }
+      pushQueue({
+        type: 'audio',
+        sourceUpdater: this,
+        action: actions.callback(callback),
+        name: 'callback'
+      });
+    }
+    /**
+     * Add a function to the queue that will be called
+     * when it is its turn to run in the video queue.
+     *
+     * @param {Function} callback
+     *        The callback to queue.
+     */
+
+    videoQueueCallback(callback) {
+      if (!this.videoBuffer) {
+        return;
+      }
+      pushQueue({
+        type: 'video',
+        sourceUpdater: this,
+        action: actions.callback(callback),
+        name: 'callback'
+      });
+    }
+    /**
+     * dispose of the source updater and the underlying sourceBuffer
+     */
+
+    dispose() {
+      this.trigger('dispose');
+      bufferTypes.forEach(type => {
+        this.abort(type);
+        if (this.canRemoveSourceBuffer()) {
+          this.removeSourceBuffer(type);
+        } else {
+          this[`${type}QueueCallback`](() => cleanupBuffer(type, this));
+        }
+      });
+      this.videoAppendQueued_ = false;
+      this.delayedAudioAppendQueue_.length = 0;
+      if (this.sourceopenListener_) {
+        this.mediaSource.removeEventListener('sourceopen', this.sourceopenListener_);
+      }
+      this.off();
+    }
+  }
+  const uint8ToUtf8 = uintArray => decodeURIComponent(escape(String.fromCharCode.apply(null, uintArray)));
+  const bufferToHexString = buffer => {
+    const uInt8Buffer = new Uint8Array(buffer);
+    return Array.from(uInt8Buffer).map(byte => byte.toString(16).padStart(2, '0')).join('');
+  };
+
+  /**
+   * @file vtt-segment-loader.js
+   */
+  const VTT_LINE_TERMINATORS = new Uint8Array('\n\n'.split('').map(char => char.charCodeAt(0)));
+  class NoVttJsError extends Error {
+    constructor() {
+      super('Trying to parse received VTT cues, but there is no WebVTT. Make sure vtt.js is loaded.');
+    }
+  }
+  /**
+   * An object that manages segment loading and appending.
+   *
+   * @class VTTSegmentLoader
+   * @param {Object} options required and optional options
+   * @extends videojs.EventTarget
+   */
+
+  class VTTSegmentLoader extends SegmentLoader {
+    constructor(settings, options = {}) {
+      super(settings, options); // SegmentLoader requires a MediaSource be specified or it will throw an error;
+      // however, VTTSegmentLoader has no need of a media source, so delete the reference
+
+      this.mediaSource_ = null;
+      this.subtitlesTrack_ = null;
+      this.featuresNativeTextTracks_ = settings.featuresNativeTextTracks;
+      this.loadVttJs = settings.loadVttJs; // The VTT segment will have its own time mappings. Saving VTT segment timing info in
+      // the sync controller leads to improper behavior.
+
+      this.shouldSaveSegmentTimingInfo_ = false;
+    }
+    createTransmuxer_() {
+      // don't need to transmux any subtitles
+      return null;
+    }
+    /**
+     * Indicates which time ranges are buffered
+     *
+     * @return {TimeRange}
+     *         TimeRange object representing the current buffered ranges
+     */
+
+    buffered_() {
+      if (!this.subtitlesTrack_ || !this.subtitlesTrack_.cues || !this.subtitlesTrack_.cues.length) {
+        return createTimeRanges();
+      }
+      const cues = this.subtitlesTrack_.cues;
+      const start = cues[0].startTime;
+      const end = cues[cues.length - 1].startTime;
+      return createTimeRanges([[start, end]]);
+    }
+    /**
+     * Gets and sets init segment for the provided map
+     *
+     * @param {Object} map
+     *        The map object representing the init segment to get or set
+     * @param {boolean=} set
+     *        If true, the init segment for the provided map should be saved
+     * @return {Object}
+     *         map object for desired init segment
+     */
+
+    initSegmentForMap(map, set = false) {
+      if (!map) {
+        return null;
+      }
+      const id = initSegmentId(map);
+      let storedMap = this.initSegments_[id];
+      if (set && !storedMap && map.bytes) {
+        // append WebVTT line terminators to the media initialization segment if it exists
+        // to follow the WebVTT spec (https://w3c.github.io/webvtt/#file-structure) that
+        // requires two or more WebVTT line terminators between the WebVTT header and the
+        // rest of the file
+        const combinedByteLength = VTT_LINE_TERMINATORS.byteLength + map.bytes.byteLength;
+        const combinedSegment = new Uint8Array(combinedByteLength);
+        combinedSegment.set(map.bytes);
+        combinedSegment.set(VTT_LINE_TERMINATORS, map.bytes.byteLength);
+        this.initSegments_[id] = storedMap = {
+          resolvedUri: map.resolvedUri,
+          byterange: map.byterange,
+          bytes: combinedSegment
+        };
+      }
+      return storedMap || map;
+    }
+    /**
+     * Returns true if all configuration required for loading is present, otherwise false.
+     *
+     * @return {boolean} True if the all configuration is ready for loading
+     * @private
+     */
+
+    couldBeginLoading_() {
+      return this.playlist_ && this.subtitlesTrack_ && !this.paused();
+    }
+    /**
+     * Once all the starting parameters have been specified, begin
+     * operation. This method should only be invoked from the INIT
+     * state.
+     *
+     * @private
+     */
+
+    init_() {
+      this.state = 'READY';
+      this.resetEverything();
+      return this.monitorBuffer_();
+    }
+    /**
+     * Set a subtitle track on the segment loader to add subtitles to
+     *
+     * @param {TextTrack=} track
+     *        The text track to add loaded subtitles to
+     * @return {TextTrack}
+     *        Returns the subtitles track
+     */
+
+    track(track) {
+      if (typeof track === 'undefined') {
+        return this.subtitlesTrack_;
+      }
+      this.subtitlesTrack_ = track; // if we were unpaused but waiting for a sourceUpdater, start
+      // buffering now
+
+      if (this.state === 'INIT' && this.couldBeginLoading_()) {
+        this.init_();
+      }
+      return this.subtitlesTrack_;
+    }
+    /**
+     * Remove any data in the source buffer between start and end times
+     *
+     * @param {number} start - the start time of the region to remove from the buffer
+     * @param {number} end - the end time of the region to remove from the buffer
+     */
+
+    remove(start, end) {
+      removeCuesFromTrack(start, end, this.subtitlesTrack_);
+    }
+    /**
+     * fill the buffer with segements unless the sourceBuffers are
+     * currently updating
+     *
+     * Note: this function should only ever be called by monitorBuffer_
+     * and never directly
+     *
+     * @private
+     */
+
+    fillBuffer_() {
+      // see if we need to begin loading immediately
+      const segmentInfo = this.chooseNextRequest_();
+      if (!segmentInfo) {
+        return;
+      }
+      if (this.syncController_.timestampOffsetForTimeline(segmentInfo.timeline) === null) {
+        // We don't have the timestamp offset that we need to sync subtitles.
+        // Rerun on a timestamp offset or user interaction.
+        const checkTimestampOffset = () => {
+          this.state = 'READY';
+          if (!this.paused()) {
+            // if not paused, queue a buffer check as soon as possible
+            this.monitorBuffer_();
+          }
+        };
+        this.syncController_.one('timestampoffset', checkTimestampOffset);
+        this.state = 'WAITING_ON_TIMELINE';
+        return;
+      }
+      this.loadSegment_(segmentInfo);
+    } // never set a timestamp offset for vtt segments.
+
+    timestampOffsetForSegment_() {
+      return null;
+    }
+    chooseNextRequest_() {
+      return this.skipEmptySegments_(super.chooseNextRequest_());
+    }
+    /**
+     * Prevents the segment loader from requesting segments we know contain no subtitles
+     * by walking forward until we find the next segment that we don't know whether it is
+     * empty or not.
+     *
+     * @param {Object} segmentInfo
+     *        a segment info object that describes the current segment
+     * @return {Object}
+     *         a segment info object that describes the current segment
+     */
+
+    skipEmptySegments_(segmentInfo) {
+      while (segmentInfo && segmentInfo.segment.empty) {
+        // stop at the last possible segmentInfo
+        if (segmentInfo.mediaIndex + 1 >= segmentInfo.playlist.segments.length) {
+          segmentInfo = null;
+          break;
+        }
+        segmentInfo = this.generateSegmentInfo_({
+          playlist: segmentInfo.playlist,
+          mediaIndex: segmentInfo.mediaIndex + 1,
+          startOfSegment: segmentInfo.startOfSegment + segmentInfo.duration,
+          isSyncRequest: segmentInfo.isSyncRequest
+        });
+      }
+      return segmentInfo;
+    }
+    stopForError(error) {
+      this.error(error);
+      this.state = 'READY';
+      this.pause();
+      this.trigger('error');
+    }
+    /**
+     * append a decrypted segement to the SourceBuffer through a SourceUpdater
+     *
+     * @private
+     */
+
+    segmentRequestFinished_(error, simpleSegment, result) {
+      if (!this.subtitlesTrack_) {
+        this.state = 'READY';
+        return;
+      }
+      this.saveTransferStats_(simpleSegment.stats); // the request was aborted
+
+      if (!this.pendingSegment_) {
+        this.state = 'READY';
+        this.mediaRequestsAborted += 1;
+        return;
+      }
+      if (error) {
+        if (error.code === REQUEST_ERRORS.TIMEOUT) {
+          this.handleTimeout_();
+        }
+        if (error.code === REQUEST_ERRORS.ABORTED) {
+          this.mediaRequestsAborted += 1;
+        } else {
+          this.mediaRequestsErrored += 1;
+        }
+        this.stopForError(error);
+        return;
+      }
+      const segmentInfo = this.pendingSegment_; // although the VTT segment loader bandwidth isn't really used, it's good to
+      // maintain functionality between segment loaders
+
+      this.saveBandwidthRelatedStats_(segmentInfo.duration, simpleSegment.stats); // if this request included a segment key, save that data in the cache
+
+      if (simpleSegment.key) {
+        this.segmentKey(simpleSegment.key, true);
+      }
+      this.state = 'APPENDING'; // used for tests
+
+      this.trigger('appending');
+      const segment = segmentInfo.segment;
+      if (segment.map) {
+        segment.map.bytes = simpleSegment.map.bytes;
+      }
+      segmentInfo.bytes = simpleSegment.bytes; // Make sure that vttjs has loaded, otherwise, load it and wait till it finished loading
+
+      if (typeof window.WebVTT !== 'function' && typeof this.loadVttJs === 'function') {
+        this.state = 'WAITING_ON_VTTJS'; // should be fine to call multiple times
+        // script will be loaded once but multiple listeners will be added to the queue, which is expected.
+
+        this.loadVttJs().then(() => this.segmentRequestFinished_(error, simpleSegment, result), () => this.stopForError({
+          message: 'Error loading vtt.js',
+          metadata: {
+            errorType: videojs.Error.VttLoadError
+          }
+        }));
+        return;
+      }
+      segment.requested = true;
+      try {
+        this.parseVTTCues_(segmentInfo);
+      } catch (e) {
+        this.stopForError({
+          message: e.message,
+          metadata: {
+            errorType: videojs.Error.VttCueParsingError
+          }
+        });
+        return;
+      }
+      this.updateTimeMapping_(segmentInfo, this.syncController_.timelines[segmentInfo.timeline], this.playlist_);
+      if (segmentInfo.cues.length) {
+        segmentInfo.timingInfo = {
+          start: segmentInfo.cues[0].startTime,
+          end: segmentInfo.cues[segmentInfo.cues.length - 1].endTime
+        };
+      } else {
+        segmentInfo.timingInfo = {
+          start: segmentInfo.startOfSegment,
+          end: segmentInfo.startOfSegment + segmentInfo.duration
+        };
+      }
+      if (segmentInfo.isSyncRequest) {
+        this.trigger('syncinfoupdate');
+        this.pendingSegment_ = null;
+        this.state = 'READY';
+        return;
+      }
+      segmentInfo.byteLength = segmentInfo.bytes.byteLength;
+      this.mediaSecondsLoaded += segment.duration; // Create VTTCue instances for each cue in the new segment and add them to
+      // the subtitle track
+
+      segmentInfo.cues.forEach(cue => {
+        this.subtitlesTrack_.addCue(this.featuresNativeTextTracks_ ? new window.VTTCue(cue.startTime, cue.endTime, cue.text) : cue);
+      }); // Remove any duplicate cues from the subtitle track. The WebVTT spec allows
+      // cues to have identical time-intervals, but if the text is also identical
+      // we can safely assume it is a duplicate that can be removed (ex. when a cue
+      // "overlaps" VTT segments)
+
+      removeDuplicateCuesFromTrack(this.subtitlesTrack_);
+      this.handleAppendsDone_();
+    }
+    handleData_() {// noop as we shouldn't be getting video/audio data captions
+      // that we do not support here.
+    }
+    updateTimingInfoEnd_() {// noop
+    }
+    /**
+     * Uses the WebVTT parser to parse the segment response
+     *
+     * @throws NoVttJsError
+     *
+     * @param {Object} segmentInfo
+     *        a segment info object that describes the current segment
+     * @private
+     */
+
+    parseVTTCues_(segmentInfo) {
+      let decoder;
+      let decodeBytesToString = false;
+      if (typeof window.WebVTT !== 'function') {
+        // caller is responsible for exception handling.
+        throw new NoVttJsError();
+      }
+      if (typeof window.TextDecoder === 'function') {
+        decoder = new window.TextDecoder('utf8');
+      } else {
+        decoder = window.WebVTT.StringDecoder();
+        decodeBytesToString = true;
+      }
+      const parser = new window.WebVTT.Parser(window, window.vttjs, decoder);
+      segmentInfo.cues = [];
+      segmentInfo.timestampmap = {
+        MPEGTS: 0,
+        LOCAL: 0
+      };
+      parser.oncue = segmentInfo.cues.push.bind(segmentInfo.cues);
+      parser.ontimestampmap = map => {
+        segmentInfo.timestampmap = map;
+      };
+      parser.onparsingerror = error => {
+        videojs.log.warn('Error encountered when parsing cues: ' + error.message);
+      };
+      if (segmentInfo.segment.map) {
+        let mapData = segmentInfo.segment.map.bytes;
+        if (decodeBytesToString) {
+          mapData = uint8ToUtf8(mapData);
+        }
+        parser.parse(mapData);
+      }
+      let segmentData = segmentInfo.bytes;
+      if (decodeBytesToString) {
+        segmentData = uint8ToUtf8(segmentData);
+      }
+      parser.parse(segmentData);
+      parser.flush();
+    }
+    /**
+     * Updates the start and end times of any cues parsed by the WebVTT parser using
+     * the information parsed from the X-TIMESTAMP-MAP header and a TS to media time mapping
+     * from the SyncController
+     *
+     * @param {Object} segmentInfo
+     *        a segment info object that describes the current segment
+     * @param {Object} mappingObj
+     *        object containing a mapping from TS to media time
+     * @param {Object} playlist
+     *        the playlist object containing the segment
+     * @private
+     */
+
+    updateTimeMapping_(segmentInfo, mappingObj, playlist) {
+      const segment = segmentInfo.segment;
+      if (!mappingObj) {
+        // If the sync controller does not have a mapping of TS to Media Time for the
+        // timeline, then we don't have enough information to update the cue
+        // start/end times
+        return;
+      }
+      if (!segmentInfo.cues.length) {
+        // If there are no cues, we also do not have enough information to figure out
+        // segment timing. Mark that the segment contains no cues so we don't re-request
+        // an empty segment.
+        segment.empty = true;
+        return;
+      }
+      const {
+        MPEGTS,
+        LOCAL
+      } = segmentInfo.timestampmap;
+      /**
+       * From the spec:
+       * The MPEGTS media timestamp MUST use a 90KHz timescale,
+       * even when non-WebVTT Media Segments use a different timescale.
+       */
+
+      const mpegTsInSeconds = MPEGTS / clock_1;
+      const diff = mpegTsInSeconds - LOCAL + mappingObj.mapping;
+      segmentInfo.cues.forEach(cue => {
+        const duration = cue.endTime - cue.startTime;
+        const startTime = MPEGTS === 0 ? cue.startTime + diff : this.handleRollover_(cue.startTime + diff, mappingObj.time);
+        cue.startTime = Math.max(startTime, 0);
+        cue.endTime = Math.max(startTime + duration, 0);
+      });
+      if (!playlist.syncInfo) {
+        const firstStart = segmentInfo.cues[0].startTime;
+        const lastStart = segmentInfo.cues[segmentInfo.cues.length - 1].startTime;
+        playlist.syncInfo = {
+          mediaSequence: playlist.mediaSequence + segmentInfo.mediaIndex,
+          time: Math.min(firstStart, lastStart - segment.duration)
+        };
+      }
+    }
+    /**
+     * MPEG-TS PES timestamps are limited to 2^33.
+     * Once they reach 2^33, they roll over to 0.
+     * mux.js handles PES timestamp rollover for the following scenarios:
+     * [forward rollover(right)] ->
+     *    PES timestamps monotonically increase, and once they reach 2^33, they roll over to 0
+     * [backward rollover(left)] -->
+     *    we seek back to position before rollover.
+     *
+     * According to the HLS SPEC:
+     * When synchronizing WebVTT with PES timestamps, clients SHOULD account
+     * for cases where the 33-bit PES timestamps have wrapped and the WebVTT
+     * cue times have not.  When the PES timestamp wraps, the WebVTT Segment
+     * SHOULD have a X-TIMESTAMP-MAP header that maps the current WebVTT
+     * time to the new (low valued) PES timestamp.
+     *
+     * So we want to handle rollover here and align VTT Cue start/end time to the player's time.
+     */
+
+    handleRollover_(value, reference) {
+      if (reference === null) {
+        return value;
+      }
+      let valueIn90khz = value * clock_1;
+      const referenceIn90khz = reference * clock_1;
+      let offset;
+      if (referenceIn90khz < valueIn90khz) {
+        // - 2^33
+        offset = -8589934592;
+      } else {
+        // + 2^33
+        offset = 8589934592;
+      } // distance(value - reference) > 2^32
+
+      while (Math.abs(valueIn90khz - referenceIn90khz) > 4294967296) {
+        valueIn90khz += offset;
+      }
+      return valueIn90khz / clock_1;
+    }
+  }
+
+  /**
+   * @file ad-cue-tags.js
+   */
+  /**
+   * Searches for an ad cue that overlaps with the given mediaTime
+   *
+   * @param {Object} track
+   *        the track to find the cue for
+   *
+   * @param {number} mediaTime
+   *        the time to find the cue at
+   *
+   * @return {Object|null}
+   *         the found cue or null
+   */
+
+  const findAdCue = function (track, mediaTime) {
+    const cues = track.cues;
+    for (let i = 0; i < cues.length; i++) {
+      const cue = cues[i];
+      if (mediaTime >= cue.adStartTime && mediaTime <= cue.adEndTime) {
+        return cue;
+      }
+    }
+    return null;
+  };
+  const updateAdCues = function (media, track, offset = 0) {
+    if (!media.segments) {
+      return;
+    }
+    let mediaTime = offset;
+    let cue;
+    for (let i = 0; i < media.segments.length; i++) {
+      const segment = media.segments[i];
+      if (!cue) {
+        // Since the cues will span for at least the segment duration, adding a fudge
+        // factor of half segment duration will prevent duplicate cues from being
+        // created when timing info is not exact (e.g. cue start time initialized
+        // at 10.006677, but next call mediaTime is 10.003332 )
+        cue = findAdCue(track, mediaTime + segment.duration / 2);
+      }
+      if (cue) {
+        if ('cueIn' in segment) {
+          // Found a CUE-IN so end the cue
+          cue.endTime = mediaTime;
+          cue.adEndTime = mediaTime;
+          mediaTime += segment.duration;
+          cue = null;
+          continue;
+        }
+        if (mediaTime < cue.endTime) {
+          // Already processed this mediaTime for this cue
+          mediaTime += segment.duration;
+          continue;
+        } // otherwise extend cue until a CUE-IN is found
+
+        cue.endTime += segment.duration;
+      } else {
+        if ('cueOut' in segment) {
+          cue = new window.VTTCue(mediaTime, mediaTime + segment.duration, segment.cueOut);
+          cue.adStartTime = mediaTime; // Assumes tag format to be
+          // #EXT-X-CUE-OUT:30
+
+          cue.adEndTime = mediaTime + parseFloat(segment.cueOut);
+          track.addCue(cue);
+        }
+        if ('cueOutCont' in segment) {
+          // Entered into the middle of an ad cue
+          // Assumes tag formate to be
+          // #EXT-X-CUE-OUT-CONT:10/30
+          const [adOffset, adTotal] = segment.cueOutCont.split('/').map(parseFloat);
+          cue = new window.VTTCue(mediaTime, mediaTime + segment.duration, '');
+          cue.adStartTime = mediaTime - adOffset;
+          cue.adEndTime = cue.adStartTime + adTotal;
+          track.addCue(cue);
+        }
+      }
+      mediaTime += segment.duration;
+    }
+  };
+  class SyncInfo {
+    /**
+     * @param {number} start - media sequence start
+     * @param {number} end - media sequence end
+     * @param {number} segmentIndex - index for associated segment
+     * @param {number|null} [partIndex] - index for associated part
+     * @param {boolean} [appended] - appended indicator
+     *
+     */
+    constructor({
+      start,
+      end,
+      segmentIndex,
+      partIndex = null,
+      appended = false
+    }) {
+      this.start_ = start;
+      this.end_ = end;
+      this.segmentIndex_ = segmentIndex;
+      this.partIndex_ = partIndex;
+      this.appended_ = appended;
+    }
+    isInRange(targetTime) {
+      return targetTime >= this.start && targetTime < this.end;
+    }
+    markAppended() {
+      this.appended_ = true;
+    }
+    resetAppendedStatus() {
+      this.appended_ = false;
+    }
+    get isAppended() {
+      return this.appended_;
+    }
+    get start() {
+      return this.start_;
+    }
+    get end() {
+      return this.end_;
+    }
+    get segmentIndex() {
+      return this.segmentIndex_;
+    }
+    get partIndex() {
+      return this.partIndex_;
+    }
+  }
+  class SyncInfoData {
+    /**
+     *
+     * @param {SyncInfo} segmentSyncInfo - sync info for a given segment
+     * @param {Array<SyncInfo>} [partsSyncInfo] - sync infos for a list of parts for a given segment
+     */
+    constructor(segmentSyncInfo, partsSyncInfo = []) {
+      this.segmentSyncInfo_ = segmentSyncInfo;
+      this.partsSyncInfo_ = partsSyncInfo;
+    }
+    get segmentSyncInfo() {
+      return this.segmentSyncInfo_;
+    }
+    get partsSyncInfo() {
+      return this.partsSyncInfo_;
+    }
+    get hasPartsSyncInfo() {
+      return this.partsSyncInfo_.length > 0;
+    }
+    resetAppendStatus() {
+      this.segmentSyncInfo_.resetAppendedStatus();
+      this.partsSyncInfo_.forEach(partSyncInfo => partSyncInfo.resetAppendedStatus());
+    }
+  }
+  class MediaSequenceSync {
+    constructor() {
+      /**
+       * @type {Map<number, SyncInfoData>}
+       * @private
+       */
+      this.storage_ = new Map();
+      this.diagnostics_ = '';
+      this.isReliable_ = false;
+      this.start_ = -Infinity;
+      this.end_ = Infinity;
+    }
+    get start() {
+      return this.start_;
+    }
+    get end() {
+      return this.end_;
+    }
+    get diagnostics() {
+      return this.diagnostics_;
+    }
+    get isReliable() {
+      return this.isReliable_;
+    }
+    resetAppendedStatus() {
+      this.storage_.forEach(syncInfoData => syncInfoData.resetAppendStatus());
+    }
+    /**
+     * update sync storage
+     *
+     * @param {Object} playlist
+     * @param {number} currentTime
+     *
+     * @return {void}
+     */
+
+    update(playlist, currentTime) {
+      const {
+        mediaSequence,
+        segments
+      } = playlist;
+      this.isReliable_ = this.isReliablePlaylist_(mediaSequence, segments);
+      if (!this.isReliable_) {
+        return;
+      }
+      return this.updateStorage_(segments, mediaSequence, this.calculateBaseTime_(mediaSequence, currentTime));
+    }
+    /**
+     * @param {number} targetTime
+     * @return {SyncInfo|null}
+     */
+
+    getSyncInfoForTime(targetTime) {
+      for (const {
+        segmentSyncInfo,
+        partsSyncInfo
+      } of this.storage_.values()) {
+        // Normal segment flow:
+        if (!partsSyncInfo.length) {
+          if (segmentSyncInfo.isInRange(targetTime)) {
+            return segmentSyncInfo;
+          }
+        } else {
+          // Low latency flow:
+          for (const partSyncInfo of partsSyncInfo) {
+            if (partSyncInfo.isInRange(targetTime)) {
+              return partSyncInfo;
+            }
+          }
+        }
+      }
+      return null;
+    }
+    updateStorage_(segments, startingMediaSequence, startingTime) {
+      const newStorage = new Map();
+      let newDiagnostics = '\n';
+      let currentStart = startingTime;
+      let currentMediaSequence = startingMediaSequence;
+      this.start_ = currentStart;
+      segments.forEach((segment, segmentIndex) => {
+        const prevSyncInfoData = this.storage_.get(currentMediaSequence);
+        const segmentStart = currentStart;
+        const segmentEnd = segmentStart + segment.duration;
+        const segmentIsAppended = Boolean(prevSyncInfoData && prevSyncInfoData.segmentSyncInfo && prevSyncInfoData.segmentSyncInfo.isAppended);
+        const segmentSyncInfo = new SyncInfo({
+          start: segmentStart,
+          end: segmentEnd,
+          appended: segmentIsAppended,
+          segmentIndex
+        });
+        segment.syncInfo = segmentSyncInfo;
+        let currentPartStart = currentStart;
+        const partsSyncInfo = (segment.parts || []).map((part, partIndex) => {
+          const partStart = currentPartStart;
+          const partEnd = currentPartStart + part.duration;
+          const partIsAppended = Boolean(prevSyncInfoData && prevSyncInfoData.partsSyncInfo && prevSyncInfoData.partsSyncInfo[partIndex] && prevSyncInfoData.partsSyncInfo[partIndex].isAppended);
+          const partSyncInfo = new SyncInfo({
+            start: partStart,
+            end: partEnd,
+            appended: partIsAppended,
+            segmentIndex,
+            partIndex
+          });
+          currentPartStart = partEnd;
+          newDiagnostics += `Media Sequence: ${currentMediaSequence}.${partIndex} | Range: ${partStart} --> ${partEnd} | Appended: ${partIsAppended}\n`;
+          part.syncInfo = partSyncInfo;
+          return partSyncInfo;
+        });
+        newStorage.set(currentMediaSequence, new SyncInfoData(segmentSyncInfo, partsSyncInfo));
+        newDiagnostics += `${compactSegmentUrlDescription(segment.resolvedUri)} | Media Sequence: ${currentMediaSequence} | Range: ${segmentStart} --> ${segmentEnd} | Appended: ${segmentIsAppended}\n`;
+        currentMediaSequence++;
+        currentStart = segmentEnd;
+      });
+      this.end_ = currentStart;
+      this.storage_ = newStorage;
+      this.diagnostics_ = newDiagnostics;
+    }
+    calculateBaseTime_(mediaSequence, fallback) {
+      if (!this.storage_.size) {
+        // Initial setup flow.
+        return 0;
+      }
+      if (this.storage_.has(mediaSequence)) {
+        // Normal flow.
+        return this.storage_.get(mediaSequence).segmentSyncInfo.start;
+      } // Fallback flow.
+      // There is a gap between last recorded playlist and a new one received.
+
+      return fallback;
+    }
+    isReliablePlaylist_(mediaSequence, segments) {
+      return mediaSequence !== undefined && mediaSequence !== null && Array.isArray(segments) && segments.length;
+    }
+  }
+
+  /**
+   * @file sync-controller.js
+   */
+  // synchronize expired playlist segments.
+  // the max media sequence diff is 48 hours of live stream
+  // content with two second segments. Anything larger than that
+  // will likely be invalid.
+
+  const MAX_MEDIA_SEQUENCE_DIFF_FOR_SYNC = 86400;
+  const syncPointStrategies = [
+  // Stategy "VOD": Handle the VOD-case where the sync-point is *always*
+  //                the equivalence display-time 0 === segment-index 0
+  {
+    name: 'VOD',
+    run: (syncController, playlist, duration, currentTimeline, currentTime) => {
+      if (duration !== Infinity) {
+        const syncPoint = {
+          time: 0,
+          segmentIndex: 0,
+          partIndex: null
+        };
+        return syncPoint;
+      }
+      return null;
+    }
+  }, {
+    name: 'MediaSequence',
+    /**
+     * run media sequence strategy
+     *
+     * @param {SyncController} syncController
+     * @param {Object} playlist
+     * @param {number} duration
+     * @param {number} currentTimeline
+     * @param {number} currentTime
+     * @param {string} type
+     */
+    run: (syncController, playlist, duration, currentTimeline, currentTime, type) => {
+      const mediaSequenceSync = syncController.getMediaSequenceSync(type);
+      if (!mediaSequenceSync) {
+        return null;
+      }
+      if (!mediaSequenceSync.isReliable) {
+        return null;
+      }
+      const syncInfo = mediaSequenceSync.getSyncInfoForTime(currentTime);
+      if (!syncInfo) {
+        return null;
+      }
+      return {
+        time: syncInfo.start,
+        partIndex: syncInfo.partIndex,
+        segmentIndex: syncInfo.segmentIndex
+      };
+    }
+  },
+  // Stategy "ProgramDateTime": We have a program-date-time tag in this playlist
+  {
+    name: 'ProgramDateTime',
+    run: (syncController, playlist, duration, currentTimeline, currentTime) => {
+      if (!Object.keys(syncController.timelineToDatetimeMappings).length) {
+        return null;
+      }
+      let syncPoint = null;
+      let lastDistance = null;
+      const partsAndSegments = getPartsAndSegments(playlist);
+      currentTime = currentTime || 0;
+      for (let i = 0; i < partsAndSegments.length; i++) {
+        // start from the end and loop backwards for live
+        // or start from the front and loop forwards for non-live
+        const index = playlist.endList || currentTime === 0 ? i : partsAndSegments.length - (i + 1);
+        const partAndSegment = partsAndSegments[index];
+        const segment = partAndSegment.segment;
+        const datetimeMapping = syncController.timelineToDatetimeMappings[segment.timeline];
+        if (!datetimeMapping || !segment.dateTimeObject) {
+          continue;
+        }
+        const segmentTime = segment.dateTimeObject.getTime() / 1000;
+        let start = segmentTime + datetimeMapping; // take part duration into account.
+
+        if (segment.parts && typeof partAndSegment.partIndex === 'number') {
+          for (let z = 0; z < partAndSegment.partIndex; z++) {
+            start += segment.parts[z].duration;
+          }
+        }
+        const distance = Math.abs(currentTime - start); // Once the distance begins to increase, or if distance is 0, we have passed
+        // currentTime and can stop looking for better candidates
+
+        if (lastDistance !== null && (distance === 0 || lastDistance < distance)) {
+          break;
+        }
+        lastDistance = distance;
+        syncPoint = {
+          time: start,
+          segmentIndex: partAndSegment.segmentIndex,
+          partIndex: partAndSegment.partIndex
+        };
+      }
+      return syncPoint;
+    }
+  },
+  // Stategy "Segment": We have a known time mapping for a timeline and a
+  //                    segment in the current timeline with timing data
+  {
+    name: 'Segment',
+    run: (syncController, playlist, duration, currentTimeline, currentTime) => {
+      let syncPoint = null;
+      let lastDistance = null;
+      currentTime = currentTime || 0;
+      const partsAndSegments = getPartsAndSegments(playlist);
+      for (let i = 0; i < partsAndSegments.length; i++) {
+        // start from the end and loop backwards for live
+        // or start from the front and loop forwards for non-live
+        const index = playlist.endList || currentTime === 0 ? i : partsAndSegments.length - (i + 1);
+        const partAndSegment = partsAndSegments[index];
+        const segment = partAndSegment.segment;
+        const start = partAndSegment.part && partAndSegment.part.start || segment && segment.start;
+        if (segment.timeline === currentTimeline && typeof start !== 'undefined') {
+          const distance = Math.abs(currentTime - start); // Once the distance begins to increase, we have passed
+          // currentTime and can stop looking for better candidates
+
+          if (lastDistance !== null && lastDistance < distance) {
+            break;
+          }
+          if (!syncPoint || lastDistance === null || lastDistance >= distance) {
+            lastDistance = distance;
+            syncPoint = {
+              time: start,
+              segmentIndex: partAndSegment.segmentIndex,
+              partIndex: partAndSegment.partIndex
+            };
+          }
+        }
+      }
+      return syncPoint;
+    }
+  },
+  // Stategy "Discontinuity": We have a discontinuity with a known
+  //                          display-time
+  {
+    name: 'Discontinuity',
+    run: (syncController, playlist, duration, currentTimeline, currentTime) => {
+      let syncPoint = null;
+      currentTime = currentTime || 0;
+      if (playlist.discontinuityStarts && playlist.discontinuityStarts.length) {
+        let lastDistance = null;
+        for (let i = 0; i < playlist.discontinuityStarts.length; i++) {
+          const segmentIndex = playlist.discontinuityStarts[i];
+          const discontinuity = playlist.discontinuitySequence + i + 1;
+          const discontinuitySync = syncController.discontinuities[discontinuity];
+          if (discontinuitySync) {
+            const distance = Math.abs(currentTime - discontinuitySync.time); // Once the distance begins to increase, we have passed
+            // currentTime and can stop looking for better candidates
+
+            if (lastDistance !== null && lastDistance < distance) {
+              break;
+            }
+            if (!syncPoint || lastDistance === null || lastDistance >= distance) {
+              lastDistance = distance;
+              syncPoint = {
+                time: discontinuitySync.time,
+                segmentIndex,
+                partIndex: null
+              };
+            }
+          }
+        }
+      }
+      return syncPoint;
+    }
+  },
+  // Stategy "Playlist": We have a playlist with a known mapping of
+  //                     segment index to display time
+  {
+    name: 'Playlist',
+    run: (syncController, playlist, duration, currentTimeline, currentTime) => {
+      if (playlist.syncInfo) {
+        const syncPoint = {
+          time: playlist.syncInfo.time,
+          segmentIndex: playlist.syncInfo.mediaSequence - playlist.mediaSequence,
+          partIndex: null
+        };
+        return syncPoint;
+      }
+      return null;
+    }
+  }];
+  class SyncController extends videojs.EventTarget {
+    constructor(options = {}) {
+      super(); // ...for synching across variants
+
+      this.timelines = [];
+      this.discontinuities = [];
+      this.timelineToDatetimeMappings = {}; // TODO: this map should be only available for HLS. Since only HLS has MediaSequence.
+      //  For some reason this map helps with syncing between quality switch for MPEG-DASH as well.
+      //  Moreover if we disable this map for MPEG-DASH - quality switch will be broken.
+      //  MPEG-DASH should have its own separate sync strategy
+
+      this.mediaSequenceStorage_ = {
+        main: new MediaSequenceSync(),
+        audio: new MediaSequenceSync(),
+        vtt: new MediaSequenceSync()
+      };
+      this.logger_ = logger('SyncController');
+    }
+    /**
+     *
+     * @param {string} loaderType
+     * @return {MediaSequenceSync|null}
+     */
+
+    getMediaSequenceSync(loaderType) {
+      return this.mediaSequenceStorage_[loaderType] || null;
+    }
+    /**
+     * Find a sync-point for the playlist specified
+     *
+     * A sync-point is defined as a known mapping from display-time to
+     * a segment-index in the current playlist.
+     *
+     * @param {Playlist} playlist
+     *        The playlist that needs a sync-point
+     * @param {number} duration
+     *        Duration of the MediaSource (Infinite if playing a live source)
+     * @param {number} currentTimeline
+     *        The last timeline from which a segment was loaded
+     * @param {number} currentTime
+     *        Current player's time
+     * @param {string} type
+     *        Segment loader type
+     * @return {Object}
+     *          A sync-point object
+     */
+
+    getSyncPoint(playlist, duration, currentTimeline, currentTime, type) {
+      // Always use VOD sync point for VOD
+      if (duration !== Infinity) {
+        const vodSyncPointStrategy = syncPointStrategies.find(({
+          name
+        }) => name === 'VOD');
+        return vodSyncPointStrategy.run(this, playlist, duration);
+      }
+      const syncPoints = this.runStrategies_(playlist, duration, currentTimeline, currentTime, type);
+      if (!syncPoints.length) {
+        // Signal that we need to attempt to get a sync-point manually
+        // by fetching a segment in the playlist and constructing
+        // a sync-point from that information
+        return null;
+      } // If we have exact match just return it instead of finding the nearest distance
+
+      for (const syncPointInfo of syncPoints) {
+        const {
+          syncPoint,
+          strategy
+        } = syncPointInfo;
+        const {
+          segmentIndex,
+          time
+        } = syncPoint;
+        if (segmentIndex < 0) {
+          continue;
+        }
+        const selectedSegment = playlist.segments[segmentIndex];
+        const start = time;
+        const end = start + selectedSegment.duration;
+        this.logger_(`Strategy: ${strategy}. Current time: ${currentTime}. selected segment: ${segmentIndex}. Time: [${start} -> ${end}]}`);
+        if (currentTime >= start && currentTime < end) {
+          this.logger_('Found sync point with exact match: ', syncPoint);
+          return syncPoint;
+        }
+      } // Now find the sync-point that is closest to the currentTime because
+      // that should result in the most accurate guess about which segment
+      // to fetch
+
+      return this.selectSyncPoint_(syncPoints, {
+        key: 'time',
+        value: currentTime
+      });
+    }
+    /**
+     * Calculate the amount of time that has expired off the playlist during playback
+     *
+     * @param {Playlist} playlist
+     *        Playlist object to calculate expired from
+     * @param {number} duration
+     *        Duration of the MediaSource (Infinity if playling a live source)
+     * @return {number|null}
+     *          The amount of time that has expired off the playlist during playback. Null
+     *          if no sync-points for the playlist can be found.
+     */
+
+    getExpiredTime(playlist, duration) {
+      if (!playlist || !playlist.segments) {
+        return null;
+      }
+      const syncPoints = this.runStrategies_(playlist, duration, playlist.discontinuitySequence, 0); // Without sync-points, there is not enough information to determine the expired time
+
+      if (!syncPoints.length) {
+        return null;
+      }
+      const syncPoint = this.selectSyncPoint_(syncPoints, {
+        key: 'segmentIndex',
+        value: 0
+      }); // If the sync-point is beyond the start of the playlist, we want to subtract the
+      // duration from index 0 to syncPoint.segmentIndex instead of adding.
+
+      if (syncPoint.segmentIndex > 0) {
+        syncPoint.time *= -1;
+      }
+      return Math.abs(syncPoint.time + sumDurations({
+        defaultDuration: playlist.targetDuration,
+        durationList: playlist.segments,
+        startIndex: syncPoint.segmentIndex,
+        endIndex: 0
+      }));
+    }
+    /**
+     * Runs each sync-point strategy and returns a list of sync-points returned by the
+     * strategies
+     *
+     * @private
+     * @param {Playlist} playlist
+     *        The playlist that needs a sync-point
+     * @param {number} duration
+     *        Duration of the MediaSource (Infinity if playing a live source)
+     * @param {number} currentTimeline
+     *        The last timeline from which a segment was loaded
+     * @param {number} currentTime
+     *        Current player's time
+     * @param {string} type
+     *        Segment loader type
+     * @return {Array}
+     *          A list of sync-point objects
+     */
+
+    runStrategies_(playlist, duration, currentTimeline, currentTime, type) {
+      const syncPoints = []; // Try to find a sync-point in by utilizing various strategies...
+
+      for (let i = 0; i < syncPointStrategies.length; i++) {
+        const strategy = syncPointStrategies[i];
+        const syncPoint = strategy.run(this, playlist, duration, currentTimeline, currentTime, type);
+        if (syncPoint) {
+          syncPoint.strategy = strategy.name;
+          syncPoints.push({
+            strategy: strategy.name,
+            syncPoint
+          });
+        }
+      }
+      return syncPoints;
+    }
+    /**
+     * Selects the sync-point nearest the specified target
+     *
+     * @private
+     * @param {Array} syncPoints
+     *        List of sync-points to select from
+     * @param {Object} target
+     *        Object specifying the property and value we are targeting
+     * @param {string} target.key
+     *        Specifies the property to target. Must be either 'time' or 'segmentIndex'
+     * @param {number} target.value
+     *        The value to target for the specified key.
+     * @return {Object}
+     *          The sync-point nearest the target
+     */
+
+    selectSyncPoint_(syncPoints, target) {
+      let bestSyncPoint = syncPoints[0].syncPoint;
+      let bestDistance = Math.abs(syncPoints[0].syncPoint[target.key] - target.value);
+      let bestStrategy = syncPoints[0].strategy;
+      for (let i = 1; i < syncPoints.length; i++) {
+        const newDistance = Math.abs(syncPoints[i].syncPoint[target.key] - target.value);
+        if (newDistance < bestDistance) {
+          bestDistance = newDistance;
+          bestSyncPoint = syncPoints[i].syncPoint;
+          bestStrategy = syncPoints[i].strategy;
+        }
+      }
+      this.logger_(`syncPoint for [${target.key}: ${target.value}] chosen with strategy` + ` [${bestStrategy}]: [time:${bestSyncPoint.time},` + ` segmentIndex:${bestSyncPoint.segmentIndex}` + (typeof bestSyncPoint.partIndex === 'number' ? `,partIndex:${bestSyncPoint.partIndex}` : '') + ']');
+      return bestSyncPoint;
+    }
+    /**
+     * Save any meta-data present on the segments when segments leave
+     * the live window to the playlist to allow for synchronization at the
+     * playlist level later.
+     *
+     * @param {Playlist} oldPlaylist - The previous active playlist
+     * @param {Playlist} newPlaylist - The updated and most current playlist
+     */
+
+    saveExpiredSegmentInfo(oldPlaylist, newPlaylist) {
+      const mediaSequenceDiff = newPlaylist.mediaSequence - oldPlaylist.mediaSequence; // Ignore large media sequence gaps
+
+      if (mediaSequenceDiff > MAX_MEDIA_SEQUENCE_DIFF_FOR_SYNC) {
+        videojs.log.warn(`Not saving expired segment info. Media sequence gap ${mediaSequenceDiff} is too large.`);
+        return;
+      } // When a segment expires from the playlist and it has a start time
+      // save that information as a possible sync-point reference in future
+
+      for (let i = mediaSequenceDiff - 1; i >= 0; i--) {
+        const lastRemovedSegment = oldPlaylist.segments[i];
+        if (lastRemovedSegment && typeof lastRemovedSegment.start !== 'undefined') {
+          newPlaylist.syncInfo = {
+            mediaSequence: oldPlaylist.mediaSequence + i,
+            time: lastRemovedSegment.start
+          };
+          this.logger_(`playlist refresh sync: [time:${newPlaylist.syncInfo.time},` + ` mediaSequence: ${newPlaylist.syncInfo.mediaSequence}]`);
+          this.trigger('syncinfoupdate');
+          break;
+        }
+      }
+    }
+    /**
+     * Save the mapping from playlist's ProgramDateTime to display. This should only happen
+     * before segments start to load.
+     *
+     * @param {Playlist} playlist - The currently active playlist
+     */
+
+    setDateTimeMappingForStart(playlist) {
+      // It's possible for the playlist to be updated before playback starts, meaning time
+      // zero is not yet set. If, during these playlist refreshes, a discontinuity is
+      // crossed, then the old time zero mapping (for the prior timeline) would be retained
+      // unless the mappings are cleared.
+      this.timelineToDatetimeMappings = {};
+      if (playlist.segments && playlist.segments.length && playlist.segments[0].dateTimeObject) {
+        const firstSegment = playlist.segments[0];
+        const playlistTimestamp = firstSegment.dateTimeObject.getTime() / 1000;
+        this.timelineToDatetimeMappings[firstSegment.timeline] = -playlistTimestamp;
+      }
+    }
+    /**
+     * Calculates and saves timeline mappings, playlist sync info, and segment timing values
+     * based on the latest timing information.
+     *
+     * @param {Object} options
+     *        Options object
+     * @param {SegmentInfo} options.segmentInfo
+     *        The current active request information
+     * @param {boolean} options.shouldSaveTimelineMapping
+     *        If there's a timeline change, determines if the timeline mapping should be
+     *        saved for timeline mapping and program date time mappings.
+     */
+
+    saveSegmentTimingInfo({
+      segmentInfo,
+      shouldSaveTimelineMapping
+    }) {
+      const didCalculateSegmentTimeMapping = this.calculateSegmentTimeMapping_(segmentInfo, segmentInfo.timingInfo, shouldSaveTimelineMapping);
+      const segment = segmentInfo.segment;
+      if (didCalculateSegmentTimeMapping) {
+        this.saveDiscontinuitySyncInfo_(segmentInfo); // If the playlist does not have sync information yet, record that information
+        // now with segment timing information
+
+        if (!segmentInfo.playlist.syncInfo) {
+          segmentInfo.playlist.syncInfo = {
+            mediaSequence: segmentInfo.playlist.mediaSequence + segmentInfo.mediaIndex,
+            time: segment.start
+          };
+        }
+      }
+      const dateTime = segment.dateTimeObject;
+      if (segment.discontinuity && shouldSaveTimelineMapping && dateTime) {
+        this.timelineToDatetimeMappings[segment.timeline] = -(dateTime.getTime() / 1000);
+      }
+    }
+    timestampOffsetForTimeline(timeline) {
+      if (typeof this.timelines[timeline] === 'undefined') {
+        return null;
+      }
+      return this.timelines[timeline].time;
+    }
+    mappingForTimeline(timeline) {
+      if (typeof this.timelines[timeline] === 'undefined') {
+        return null;
+      }
+      return this.timelines[timeline].mapping;
+    }
+    /**
+     * Use the "media time" for a segment to generate a mapping to "display time" and
+     * save that display time to the segment.
+     *
+     * @private
+     * @param {SegmentInfo} segmentInfo
+     *        The current active request information
+     * @param {Object} timingInfo
+     *        The start and end time of the current segment in "media time"
+     * @param {boolean} shouldSaveTimelineMapping
+     *        If there's a timeline change, determines if the timeline mapping should be
+     *        saved in timelines.
+     * @return {boolean}
+     *          Returns false if segment time mapping could not be calculated
+     */
+
+    calculateSegmentTimeMapping_(segmentInfo, timingInfo, shouldSaveTimelineMapping) {
+      // TODO: remove side effects
+      const segment = segmentInfo.segment;
+      const part = segmentInfo.part;
+      let mappingObj = this.timelines[segmentInfo.timeline];
+      let start;
+      let end;
+      if (typeof segmentInfo.timestampOffset === 'number') {
+        mappingObj = {
+          time: segmentInfo.startOfSegment,
+          mapping: segmentInfo.startOfSegment - timingInfo.start
+        };
+        if (shouldSaveTimelineMapping) {
+          this.timelines[segmentInfo.timeline] = mappingObj;
+          this.trigger('timestampoffset');
+          this.logger_(`time mapping for timeline ${segmentInfo.timeline}: ` + `[time: ${mappingObj.time}] [mapping: ${mappingObj.mapping}]`);
+        }
+        start = segmentInfo.startOfSegment;
+        end = timingInfo.end + mappingObj.mapping;
+      } else if (mappingObj) {
+        start = timingInfo.start + mappingObj.mapping;
+        end = timingInfo.end + mappingObj.mapping;
+      } else {
+        return false;
+      }
+      if (part) {
+        part.start = start;
+        part.end = end;
+      } // If we don't have a segment start yet or the start value we got
+      // is less than our current segment.start value, save a new start value.
+      // We have to do this because parts will have segment timing info saved
+      // multiple times and we want segment start to be the earliest part start
+      // value for that segment.
+
+      if (!segment.start || start < segment.start) {
+        segment.start = start;
+      }
+      segment.end = end;
+      return true;
+    }
+    /**
+     * Each time we have discontinuity in the playlist, attempt to calculate the location
+     * in display of the start of the discontinuity and save that. We also save an accuracy
+     * value so that we save values with the most accuracy (closest to 0.)
+     *
+     * @private
+     * @param {SegmentInfo} segmentInfo - The current active request information
+     */
+
+    saveDiscontinuitySyncInfo_(segmentInfo) {
+      const playlist = segmentInfo.playlist;
+      const segment = segmentInfo.segment; // If the current segment is a discontinuity then we know exactly where
+      // the start of the range and it's accuracy is 0 (greater accuracy values
+      // mean more approximation)
+
+      if (segment.discontinuity) {
+        this.discontinuities[segment.timeline] = {
+          time: segment.start,
+          accuracy: 0
+        };
+      } else if (playlist.discontinuityStarts && playlist.discontinuityStarts.length) {
+        // Search for future discontinuities that we can provide better timing
+        // information for and save that information for sync purposes
+        for (let i = 0; i < playlist.discontinuityStarts.length; i++) {
+          const segmentIndex = playlist.discontinuityStarts[i];
+          const discontinuity = playlist.discontinuitySequence + i + 1;
+          const mediaIndexDiff = segmentIndex - segmentInfo.mediaIndex;
+          const accuracy = Math.abs(mediaIndexDiff);
+          if (!this.discontinuities[discontinuity] || this.discontinuities[discontinuity].accuracy > accuracy) {
+            let time;
+            if (mediaIndexDiff < 0) {
+              time = segment.start - sumDurations({
+                defaultDuration: playlist.targetDuration,
+                durationList: playlist.segments,
+                startIndex: segmentInfo.mediaIndex,
+                endIndex: segmentIndex
+              });
+            } else {
+              time = segment.end + sumDurations({
+                defaultDuration: playlist.targetDuration,
+                durationList: playlist.segments,
+                startIndex: segmentInfo.mediaIndex + 1,
+                endIndex: segmentIndex
+              });
+            }
+            this.discontinuities[discontinuity] = {
+              time,
+              accuracy
+            };
+          }
+        }
+      }
+    }
+    dispose() {
+      this.trigger('dispose');
+      this.off();
+    }
+  }
+
+  /**
+   * The TimelineChangeController acts as a source for segment loaders to listen for and
+   * keep track of latest and pending timeline changes. This is useful to ensure proper
+   * sync, as each loader may need to make a consideration for what timeline the other
+   * loader is on before making changes which could impact the other loader's media.
+   *
+   * @class TimelineChangeController
+   * @extends videojs.EventTarget
+   */
+
+  class TimelineChangeController extends videojs.EventTarget {
+    constructor() {
+      super();
+      this.pendingTimelineChanges_ = {};
+      this.lastTimelineChanges_ = {};
+    }
+    clearPendingTimelineChange(type) {
+      this.pendingTimelineChanges_[type] = null;
+      this.trigger('pendingtimelinechange');
+    }
+    pendingTimelineChange({
+      type,
+      from,
+      to
+    }) {
+      if (typeof from === 'number' && typeof to === 'number') {
+        this.pendingTimelineChanges_[type] = {
+          type,
+          from,
+          to
+        };
+        this.trigger('pendingtimelinechange');
+      }
+      return this.pendingTimelineChanges_[type];
+    }
+    lastTimelineChange({
+      type,
+      from,
+      to
+    }) {
+      if (typeof from === 'number' && typeof to === 'number') {
+        this.lastTimelineChanges_[type] = {
+          type,
+          from,
+          to
+        };
+        delete this.pendingTimelineChanges_[type];
+        this.trigger('timelinechange');
+      }
+      return this.lastTimelineChanges_[type];
+    }
+    dispose() {
+      this.trigger('dispose');
+      this.pendingTimelineChanges_ = {};
+      this.lastTimelineChanges_ = {};
+      this.off();
+    }
+  }
+
+  /* rollup-plugin-worker-factory start for worker!/home/runner/work/http-streaming/http-streaming/src/decrypter-worker.js */
+  const workerCode = transform(getWorkerString(function () {
+    /**
+     * @file stream.js
+     */
+
+    /**
+     * A lightweight readable stream implemention that handles event dispatching.
+     *
+     * @class Stream
+     */
+
+    var Stream = /*#__PURE__*/function () {
+      function Stream() {
+        this.listeners = {};
+      }
+      /**
+       * Add a listener for a specified event type.
+       *
+       * @param {string} type the event name
+       * @param {Function} listener the callback to be invoked when an event of
+       * the specified type occurs
+       */
+
+      var _proto = Stream.prototype;
+      _proto.on = function on(type, listener) {
+        if (!this.listeners[type]) {
+          this.listeners[type] = [];
+        }
+        this.listeners[type].push(listener);
+      }
+      /**
+       * Remove a listener for a specified event type.
+       *
+       * @param {string} type the event name
+       * @param {Function} listener  a function previously registered for this
+       * type of event through `on`
+       * @return {boolean} if we could turn it off or not
+       */;
+
+      _proto.off = function off(type, listener) {
+        if (!this.listeners[type]) {
+          return false;
+        }
+        var index = this.listeners[type].indexOf(listener); // TODO: which is better?
+        // In Video.js we slice listener functions
+        // on trigger so that it does not mess up the order
+        // while we loop through.
+        //
+        // Here we slice on off so that the loop in trigger
+        // can continue using it's old reference to loop without
+        // messing up the order.
+
+        this.listeners[type] = this.listeners[type].slice(0);
+        this.listeners[type].splice(index, 1);
+        return index > -1;
+      }
+      /**
+       * Trigger an event of the specified type on this stream. Any additional
+       * arguments to this function are passed as parameters to event listeners.
+       *
+       * @param {string} type the event name
+       */;
+
+      _proto.trigger = function trigger(type) {
+        var callbacks = this.listeners[type];
+        if (!callbacks) {
+          return;
+        } // Slicing the arguments on every invocation of this method
+        // can add a significant amount of overhead. Avoid the
+        // intermediate object creation for the common case of a
+        // single callback argument
+
+        if (arguments.length === 2) {
+          var length = callbacks.length;
+          for (var i = 0; i < length; ++i) {
+            callbacks[i].call(this, arguments[1]);
+          }
+        } else {
+          var args = Array.prototype.slice.call(arguments, 1);
+          var _length = callbacks.length;
+          for (var _i = 0; _i < _length; ++_i) {
+            callbacks[_i].apply(this, args);
+          }
+        }
+      }
+      /**
+       * Destroys the stream and cleans up.
+       */;
+
+      _proto.dispose = function dispose() {
+        this.listeners = {};
+      }
+      /**
+       * Forwards all `data` events on this stream to the destination stream. The
+       * destination stream should provide a method `push` to receive the data
+       * events as they arrive.
+       *
+       * @param {Stream} destination the stream that will receive all `data` events
+       * @see http://nodejs.org/api/stream.html#stream_readable_pipe_destination_options
+       */;
+
+      _proto.pipe = function pipe(destination) {
+        this.on('data', function (data) {
+          destination.push(data);
+        });
+      };
+      return Stream;
+    }();
+    /*! @name pkcs7 @version 1.0.4 @license Apache-2.0 */
+
+    /**
+     * Returns the subarray of a Uint8Array without PKCS#7 padding.
+     *
+     * @param padded {Uint8Array} unencrypted bytes that have been padded
+     * @return {Uint8Array} the unpadded bytes
+     * @see http://tools.ietf.org/html/rfc5652
+     */
+
+    function unpad(padded) {
+      return padded.subarray(0, padded.byteLength - padded[padded.byteLength - 1]);
+    }
+    /*! @name aes-decrypter @version 4.0.1 @license Apache-2.0 */
+
+    /**
+     * @file aes.js
+     *
+     * This file contains an adaptation of the AES decryption algorithm
+     * from the Standford Javascript Cryptography Library. That work is
+     * covered by the following copyright and permissions notice:
+     *
+     * Copyright 2009-2010 Emily Stark, Mike Hamburg, Dan Boneh.
+     * All rights reserved.
+     *
+     * Redistribution and use in source and binary forms, with or without
+     * modification, are permitted provided that the following conditions are
+     * met:
+     *
+     * 1. Redistributions of source code must retain the above copyright
+     *    notice, this list of conditions and the following disclaimer.
+     *
+     * 2. Redistributions in binary form must reproduce the above
+     *    copyright notice, this list of conditions and the following
+     *    disclaimer in the documentation and/or other materials provided
+     *    with the distribution.
+     *
+     * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
+     * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+     * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+     * DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> OR CONTRIBUTORS BE
+     * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+     * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+     * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+     * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+     * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+     * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+     * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+     *
+     * The views and conclusions contained in the software and documentation
+     * are those of the authors and should not be interpreted as representing
+     * official policies, either expressed or implied, of the authors.
+     */
+
+    /**
+     * Expand the S-box tables.
+     *
+     * @private
+     */
+
+    const precompute = function () {
+      const tables = [[[], [], [], [], []], [[], [], [], [], []]];
+      const encTable = tables[0];
+      const decTable = tables[1];
+      const sbox = encTable[4];
+      const sboxInv = decTable[4];
+      let i;
+      let x;
+      let xInv;
+      const d = [];
+      const th = [];
+      let x2;
+      let x4;
+      let x8;
+      let s;
+      let tEnc;
+      let tDec; // Compute double and third tables
+
+      for (i = 0; i < 256; i++) {
+        th[(d[i] = i << 1 ^ (i >> 7) * 283) ^ i] = i;
+      }
+      for (x = xInv = 0; !sbox[x]; x ^= x2 || 1, xInv = th[xInv] || 1) {
+        // Compute sbox
+        s = xInv ^ xInv << 1 ^ xInv << 2 ^ xInv << 3 ^ xInv << 4;
+        s = s >> 8 ^ s & 255 ^ 99;
+        sbox[x] = s;
+        sboxInv[s] = x; // Compute MixColumns
+
+        x8 = d[x4 = d[x2 = d[x]]];
+        tDec = x8 * 0x1010101 ^ x4 * 0x10001 ^ x2 * 0x101 ^ x * 0x1010100;
+        tEnc = d[s] * 0x101 ^ s * 0x1010100;
+        for (i = 0; i < 4; i++) {
+          encTable[i][x] = tEnc = tEnc << 24 ^ tEnc >>> 8;
+          decTable[i][s] = tDec = tDec << 24 ^ tDec >>> 8;
+        }
+      } // Compactify. Considerable speedup on Firefox.
+
+      for (i = 0; i < 5; i++) {
+        encTable[i] = encTable[i].slice(0);
+        decTable[i] = decTable[i].slice(0);
+      }
+      return tables;
+    };
+    let aesTables = null;
+    /**
+     * Schedule out an AES key for both encryption and decryption. This
+     * is a low-level class. Use a cipher mode to do bulk encryption.
+     *
+     * @class AES
+     * @param key {Array} The key as an array of 4, 6 or 8 words.
+     */
+
+    class AES {
+      constructor(key) {
+        /**
+        * The expanded S-box and inverse S-box tables. These will be computed
+        * on the client so that we don't have to send them down the wire.
+        *
+        * There are two tables, _tables[0] is for encryption and
+        * _tables[1] is for decryption.
+        *
+        * The first 4 sub-tables are the expanded S-box with MixColumns. The
+        * last (_tables[01][4]) is the S-box itself.
+        *
+        * @private
+        */
+        // if we have yet to precompute the S-box tables
+        // do so now
+        if (!aesTables) {
+          aesTables = precompute();
+        } // then make a copy of that object for use
+
+        this._tables = [[aesTables[0][0].slice(), aesTables[0][1].slice(), aesTables[0][2].slice(), aesTables[0][3].slice(), aesTables[0][4].slice()], [aesTables[1][0].slice(), aesTables[1][1].slice(), aesTables[1][2].slice(), aesTables[1][3].slice(), aesTables[1][4].slice()]];
+        let i;
+        let j;
+        let tmp;
+        const sbox = this._tables[0][4];
+        const decTable = this._tables[1];
+        const keyLen = key.length;
+        let rcon = 1;
+        if (keyLen !== 4 && keyLen !== 6 && keyLen !== 8) {
+          throw new Error('Invalid aes key size');
+        }
+        const encKey = key.slice(0);
+        const decKey = [];
+        this._key = [encKey, decKey]; // schedule encryption keys
+
+        for (i = keyLen; i < 4 * keyLen + 28; i++) {
+          tmp = encKey[i - 1]; // apply sbox
+
+          if (i % keyLen === 0 || keyLen === 8 && i % keyLen === 4) {
+            tmp = sbox[tmp >>> 24] << 24 ^ sbox[tmp >> 16 & 255] << 16 ^ sbox[tmp >> 8 & 255] << 8 ^ sbox[tmp & 255]; // shift rows and add rcon
+
+            if (i % keyLen === 0) {
+              tmp = tmp << 8 ^ tmp >>> 24 ^ rcon << 24;
+              rcon = rcon << 1 ^ (rcon >> 7) * 283;
+            }
+          }
+          encKey[i] = encKey[i - keyLen] ^ tmp;
+        } // schedule decryption keys
+
+        for (j = 0; i; j++, i--) {
+          tmp = encKey[j & 3 ? i : i - 4];
+          if (i <= 4 || j < 4) {
+            decKey[j] = tmp;
+          } else {
+            decKey[j] = decTable[0][sbox[tmp >>> 24]] ^ decTable[1][sbox[tmp >> 16 & 255]] ^ decTable[2][sbox[tmp >> 8 & 255]] ^ decTable[3][sbox[tmp & 255]];
+          }
+        }
+      }
+      /**
+       * Decrypt 16 bytes, specified as four 32-bit words.
+       *
+       * @param {number} encrypted0 the first word to decrypt
+       * @param {number} encrypted1 the second word to decrypt
+       * @param {number} encrypted2 the third word to decrypt
+       * @param {number} encrypted3 the fourth word to decrypt
+       * @param {Int32Array} out the array to write the decrypted words
+       * into
+       * @param {number} offset the offset into the output array to start
+       * writing results
+       * @return {Array} The plaintext.
+       */
+
+      decrypt(encrypted0, encrypted1, encrypted2, encrypted3, out, offset) {
+        const key = this._key[1]; // state variables a,b,c,d are loaded with pre-whitened data
+
+        let a = encrypted0 ^ key[0];
+        let b = encrypted3 ^ key[1];
+        let c = encrypted2 ^ key[2];
+        let d = encrypted1 ^ key[3];
+        let a2;
+        let b2;
+        let c2; // key.length === 2 ?
+
+        const nInnerRounds = key.length / 4 - 2;
+        let i;
+        let kIndex = 4;
+        const table = this._tables[1]; // load up the tables
+
+        const table0 = table[0];
+        const table1 = table[1];
+        const table2 = table[2];
+        const table3 = table[3];
+        const sbox = table[4]; // Inner rounds. Cribbed from OpenSSL.
+
+        for (i = 0; i < nInnerRounds; i++) {
+          a2 = table0[a >>> 24] ^ table1[b >> 16 & 255] ^ table2[c >> 8 & 255] ^ table3[d & 255] ^ key[kIndex];
+          b2 = table0[b >>> 24] ^ table1[c >> 16 & 255] ^ table2[d >> 8 & 255] ^ table3[a & 255] ^ key[kIndex + 1];
+          c2 = table0[c >>> 24] ^ table1[d >> 16 & 255] ^ table2[a >> 8 & 255] ^ table3[b & 255] ^ key[kIndex + 2];
+          d = table0[d >>> 24] ^ table1[a >> 16 & 255] ^ table2[b >> 8 & 255] ^ table3[c & 255] ^ key[kIndex + 3];
+          kIndex += 4;
+          a = a2;
+          b = b2;
+          c = c2;
+        } // Last round.
+
+        for (i = 0; i < 4; i++) {
+          out[(3 & -i) + offset] = sbox[a >>> 24] << 24 ^ sbox[b >> 16 & 255] << 16 ^ sbox[c >> 8 & 255] << 8 ^ sbox[d & 255] ^ key[kIndex++];
+          a2 = a;
+          a = b;
+          b = c;
+          c = d;
+          d = a2;
+        }
+      }
+    }
+    /**
+     * @file async-stream.js
+     */
+
+    /**
+     * A wrapper around the Stream class to use setTimeout
+     * and run stream "jobs" Asynchronously
+     *
+     * @class AsyncStream
+     * @extends Stream
+     */
+
+    class AsyncStream extends Stream {
+      constructor() {
+        super(Stream);
+        this.jobs = [];
+        this.delay = 1;
+        this.timeout_ = null;
+      }
+      /**
+       * process an async job
+       *
+       * @private
+       */
+
+      processJob_() {
+        this.jobs.shift()();
+        if (this.jobs.length) {
+          this.timeout_ = setTimeout(this.processJob_.bind(this), this.delay);
+        } else {
+          this.timeout_ = null;
+        }
+      }
+      /**
+       * push a job into the stream
+       *
+       * @param {Function} job the job to push into the stream
+       */
+
+      push(job) {
+        this.jobs.push(job);
+        if (!this.timeout_) {
+          this.timeout_ = setTimeout(this.processJob_.bind(this), this.delay);
+        }
+      }
+    }
+    /**
+     * @file decrypter.js
+     *
+     * An asynchronous implementation of AES-128 CBC decryption with
+     * PKCS#7 padding.
+     */
+
+    /**
+     * Convert network-order (big-endian) bytes into their little-endian
+     * representation.
+     */
+
+    const ntoh = function (word) {
+      return word << 24 | (word & 0xff00) << 8 | (word & 0xff0000) >> 8 | word >>> 24;
+    };
+    /**
+     * Decrypt bytes using AES-128 with CBC and PKCS#7 padding.
+     *
+     * @param {Uint8Array} encrypted the encrypted bytes
+     * @param {Uint32Array} key the bytes of the decryption key
+     * @param {Uint32Array} initVector the initialization vector (IV) to
+     * use for the first round of CBC.
+     * @return {Uint8Array} the decrypted bytes
+     *
+     * @see http://en.wikipedia.org/wiki/Advanced_Encryption_Standard
+     * @see http://en.wikipedia.org/wiki/Block_cipher_mode_of_operation#Cipher_Block_Chaining_.28CBC.29
+     * @see https://tools.ietf.org/html/rfc2315
+     */
+
+    const decrypt = function (encrypted, key, initVector) {
+      // word-level access to the encrypted bytes
+      const encrypted32 = new Int32Array(encrypted.buffer, encrypted.byteOffset, encrypted.byteLength >> 2);
+      const decipher = new AES(Array.prototype.slice.call(key)); // byte and word-level access for the decrypted output
+
+      const decrypted = new Uint8Array(encrypted.byteLength);
+      const decrypted32 = new Int32Array(decrypted.buffer); // temporary variables for working with the IV, encrypted, and
+      // decrypted data
+
+      let init0;
+      let init1;
+      let init2;
+      let init3;
+      let encrypted0;
+      let encrypted1;
+      let encrypted2;
+      let encrypted3; // iteration variable
+
+      let wordIx; // pull out the words of the IV to ensure we don't modify the
+      // passed-in reference and easier access
+
+      init0 = initVector[0];
+      init1 = initVector[1];
+      init2 = initVector[2];
+      init3 = initVector[3]; // decrypt four word sequences, applying cipher-block chaining (CBC)
+      // to each decrypted block
+
+      for (wordIx = 0; wordIx < encrypted32.length; wordIx += 4) {
+        // convert big-endian (network order) words into little-endian
+        // (javascript order)
+        encrypted0 = ntoh(encrypted32[wordIx]);
+        encrypted1 = ntoh(encrypted32[wordIx + 1]);
+        encrypted2 = ntoh(encrypted32[wordIx + 2]);
+        encrypted3 = ntoh(encrypted32[wordIx + 3]); // decrypt the block
+
+        decipher.decrypt(encrypted0, encrypted1, encrypted2, encrypted3, decrypted32, wordIx); // XOR with the IV, and restore network byte-order to obtain the
+        // plaintext
+
+        decrypted32[wordIx] = ntoh(decrypted32[wordIx] ^ init0);
+        decrypted32[wordIx + 1] = ntoh(decrypted32[wordIx + 1] ^ init1);
+        decrypted32[wordIx + 2] = ntoh(decrypted32[wordIx + 2] ^ init2);
+        decrypted32[wordIx + 3] = ntoh(decrypted32[wordIx + 3] ^ init3); // setup the IV for the next round
+
+        init0 = encrypted0;
+        init1 = encrypted1;
+        init2 = encrypted2;
+        init3 = encrypted3;
+      }
+      return decrypted;
+    };
+    /**
+     * The `Decrypter` class that manages decryption of AES
+     * data through `AsyncStream` objects and the `decrypt`
+     * function
+     *
+     * @param {Uint8Array} encrypted the encrypted bytes
+     * @param {Uint32Array} key the bytes of the decryption key
+     * @param {Uint32Array} initVector the initialization vector (IV) to
+     * @param {Function} done the function to run when done
+     * @class Decrypter
+     */
+
+    class Decrypter {
+      constructor(encrypted, key, initVector, done) {
+        const step = Decrypter.STEP;
+        const encrypted32 = new Int32Array(encrypted.buffer);
+        const decrypted = new Uint8Array(encrypted.byteLength);
+        let i = 0;
+        this.asyncStream_ = new AsyncStream(); // split up the encryption job and do the individual chunks asynchronously
+
+        this.asyncStream_.push(this.decryptChunk_(encrypted32.subarray(i, i + step), key, initVector, decrypted));
+        for (i = step; i < encrypted32.length; i += step) {
+          initVector = new Uint32Array([ntoh(encrypted32[i - 4]), ntoh(encrypted32[i - 3]), ntoh(encrypted32[i - 2]), ntoh(encrypted32[i - 1])]);
+          this.asyncStream_.push(this.decryptChunk_(encrypted32.subarray(i, i + step), key, initVector, decrypted));
+        } // invoke the done() callback when everything is finished
+
+        this.asyncStream_.push(function () {
+          // remove pkcs#7 padding from the decrypted bytes
+          done(null, unpad(decrypted));
+        });
+      }
+      /**
+       * a getter for step the maximum number of bytes to process at one time
+       *
+       * @return {number} the value of step 32000
+       */
+
+      static get STEP() {
+        // 4 * 8000;
+        return 32000;
+      }
+      /**
+       * @private
+       */
+
+      decryptChunk_(encrypted, key, initVector, decrypted) {
+        return function () {
+          const bytes = decrypt(encrypted, key, initVector);
+          decrypted.set(bytes, encrypted.byteOffset);
+        };
+      }
+    }
+    var commonjsGlobal = typeof globalThis !== 'undefined' ? globalThis : typeof window !== 'undefined' ? window : typeof global !== 'undefined' ? global : typeof self !== 'undefined' ? self : {};
+    var win;
+    if (typeof window !== "undefined") {
+      win = window;
+    } else if (typeof commonjsGlobal !== "undefined") {
+      win = commonjsGlobal;
+    } else if (typeof self !== "undefined") {
+      win = self;
+    } else {
+      win = {};
+    }
+    var window_1 = win;
+    var isArrayBufferView = function isArrayBufferView(obj) {
+      if (ArrayBuffer.isView === 'function') {
+        return ArrayBuffer.isView(obj);
+      }
+      return obj && obj.buffer instanceof ArrayBuffer;
+    };
+    var BigInt = window_1.BigInt || Number;
+    [BigInt('0x1'), BigInt('0x100'), BigInt('0x10000'), BigInt('0x1000000'), BigInt('0x100000000'), BigInt('0x10000000000'), BigInt('0x1000000000000'), BigInt('0x100000000000000'), BigInt('0x10000000000000000')];
+    (function () {
+      var a = new Uint16Array([0xFFCC]);
+      var b = new Uint8Array(a.buffer, a.byteOffset, a.byteLength);
+      if (b[0] === 0xFF) {
+        return 'big';
+      }
+      if (b[0] === 0xCC) {
+        return 'little';
+      }
+      return 'unknown';
+    })();
+    /**
+     * Creates an object for sending to a web worker modifying properties that are TypedArrays
+     * into a new object with seperated properties for the buffer, byteOffset, and byteLength.
+     *
+     * @param {Object} message
+     *        Object of properties and values to send to the web worker
+     * @return {Object}
+     *         Modified message with TypedArray values expanded
+     * @function createTransferableMessage
+     */
+
+    const createTransferableMessage = function (message) {
+      const transferable = {};
+      Object.keys(message).forEach(key => {
+        const value = message[key];
+        if (isArrayBufferView(value)) {
+          transferable[key] = {
+            bytes: value.buffer,
+            byteOffset: value.byteOffset,
+            byteLength: value.byteLength
+          };
+        } else {
+          transferable[key] = value;
+        }
+      });
+      return transferable;
+    };
+    /* global self */
+
+    /**
+     * Our web worker interface so that things can talk to aes-decrypter
+     * that will be running in a web worker. the scope is passed to this by
+     * webworkify.
+     */
+
+    self.onmessage = function (event) {
+      const data = event.data;
+      const encrypted = new Uint8Array(data.encrypted.bytes, data.encrypted.byteOffset, data.encrypted.byteLength);
+      const key = new Uint32Array(data.key.bytes, data.key.byteOffset, data.key.byteLength / 4);
+      const iv = new Uint32Array(data.iv.bytes, data.iv.byteOffset, data.iv.byteLength / 4);
+      /* eslint-disable no-new, handle-callback-err */
+
+      new Decrypter(encrypted, key, iv, function (err, bytes) {
+        self.postMessage(createTransferableMessage({
+          source: data.source,
+          decrypted: bytes
+        }), [bytes.buffer]);
+      });
+      /* eslint-enable */
+    };
+  }));
+
+  var Decrypter = factory(workerCode);
+  /* rollup-plugin-worker-factory end for worker!/home/runner/work/http-streaming/http-streaming/src/decrypter-worker.js */
+
+  /**
+   * Convert the properties of an HLS track into an audioTrackKind.
+   *
+   * @private
+   */
+
+  const audioTrackKind_ = properties => {
+    let kind = properties.default ? 'main' : 'alternative';
+    if (properties.characteristics && properties.characteristics.indexOf('public.accessibility.describes-video') >= 0) {
+      kind = 'main-desc';
+    }
+    return kind;
+  };
+  /**
+   * Pause provided segment loader and playlist loader if active
+   *
+   * @param {SegmentLoader} segmentLoader
+   *        SegmentLoader to pause
+   * @param {Object} mediaType
+   *        Active media type
+   * @function stopLoaders
+   */
+
+  const stopLoaders = (segmentLoader, mediaType) => {
+    segmentLoader.abort();
+    segmentLoader.pause();
+    if (mediaType && mediaType.activePlaylistLoader) {
+      mediaType.activePlaylistLoader.pause();
+      mediaType.activePlaylistLoader = null;
+    }
+  };
+  /**
+   * Start loading provided segment loader and playlist loader
+   *
+   * @param {PlaylistLoader} playlistLoader
+   *        PlaylistLoader to start loading
+   * @param {Object} mediaType
+   *        Active media type
+   * @function startLoaders
+   */
+
+  const startLoaders = (playlistLoader, mediaType) => {
+    // Segment loader will be started after `loadedmetadata` or `loadedplaylist` from the
+    // playlist loader
+    mediaType.activePlaylistLoader = playlistLoader;
+    playlistLoader.load();
+  };
+  /**
+   * Returns a function to be called when the media group changes. It performs a
+   * non-destructive (preserve the buffer) resync of the SegmentLoader. This is because a
+   * change of group is merely a rendition switch of the same content at another encoding,
+   * rather than a change of content, such as switching audio from English to Spanish.
+   *
+   * @param {string} type
+   *        MediaGroup type
+   * @param {Object} settings
+   *        Object containing required information for media groups
+   * @return {Function}
+   *         Handler for a non-destructive resync of SegmentLoader when the active media
+   *         group changes.
+   * @function onGroupChanged
+   */
+
+  const onGroupChanged = (type, settings) => () => {
+    const {
+      segmentLoaders: {
+        [type]: segmentLoader,
+        main: mainSegmentLoader
+      },
+      mediaTypes: {
+        [type]: mediaType
+      }
+    } = settings;
+    const activeTrack = mediaType.activeTrack();
+    const activeGroup = mediaType.getActiveGroup();
+    const previousActiveLoader = mediaType.activePlaylistLoader;
+    const lastGroup = mediaType.lastGroup_; // the group did not change do nothing
+
+    if (activeGroup && lastGroup && activeGroup.id === lastGroup.id) {
+      return;
+    }
+    mediaType.lastGroup_ = activeGroup;
+    mediaType.lastTrack_ = activeTrack;
+    stopLoaders(segmentLoader, mediaType);
+    if (!activeGroup || activeGroup.isMainPlaylist) {
+      // there is no group active or active group is a main playlist and won't change
+      return;
+    }
+    if (!activeGroup.playlistLoader) {
+      if (previousActiveLoader) {
+        // The previous group had a playlist loader but the new active group does not
+        // this means we are switching from demuxed to muxed audio. In this case we want to
+        // do a destructive reset of the main segment loader and not restart the audio
+        // loaders.
+        mainSegmentLoader.resetEverything();
+      }
+      return;
+    } // Non-destructive resync
+
+    segmentLoader.resyncLoader();
+    startLoaders(activeGroup.playlistLoader, mediaType);
+  };
+  const onGroupChanging = (type, settings) => () => {
+    const {
+      segmentLoaders: {
+        [type]: segmentLoader
+      },
+      mediaTypes: {
+        [type]: mediaType
+      }
+    } = settings;
+    mediaType.lastGroup_ = null;
+    segmentLoader.abort();
+    segmentLoader.pause();
+  };
+  /**
+   * Returns a function to be called when the media track changes. It performs a
+   * destructive reset of the SegmentLoader to ensure we start loading as close to
+   * currentTime as possible.
+   *
+   * @param {string} type
+   *        MediaGroup type
+   * @param {Object} settings
+   *        Object containing required information for media groups
+   * @return {Function}
+   *         Handler for a destructive reset of SegmentLoader when the active media
+   *         track changes.
+   * @function onTrackChanged
+   */
+
+  const onTrackChanged = (type, settings) => () => {
+    const {
+      mainPlaylistLoader,
+      segmentLoaders: {
+        [type]: segmentLoader,
+        main: mainSegmentLoader
+      },
+      mediaTypes: {
+        [type]: mediaType
+      }
+    } = settings;
+    const activeTrack = mediaType.activeTrack();
+    const activeGroup = mediaType.getActiveGroup();
+    const previousActiveLoader = mediaType.activePlaylistLoader;
+    const lastTrack = mediaType.lastTrack_; // track did not change, do nothing
+
+    if (lastTrack && activeTrack && lastTrack.id === activeTrack.id) {
+      return;
+    }
+    mediaType.lastGroup_ = activeGroup;
+    mediaType.lastTrack_ = activeTrack;
+    stopLoaders(segmentLoader, mediaType);
+    if (!activeGroup) {
+      // there is no group active so we do not want to restart loaders
+      return;
+    }
+    if (activeGroup.isMainPlaylist) {
+      // track did not change, do nothing
+      if (!activeTrack || !lastTrack || activeTrack.id === lastTrack.id) {
+        return;
+      }
+      const pc = settings.vhs.playlistController_;
+      const newPlaylist = pc.selectPlaylist(); // media will not change do nothing
+
+      if (pc.media() === newPlaylist) {
+        return;
+      }
+      mediaType.logger_(`track change. Switching main audio from ${lastTrack.id} to ${activeTrack.id}`);
+      mainPlaylistLoader.pause();
+      mainSegmentLoader.resetEverything();
+      pc.fastQualityChange_(newPlaylist);
+      return;
+    }
+    if (type === 'AUDIO') {
+      if (!activeGroup.playlistLoader) {
+        // when switching from demuxed audio/video to muxed audio/video (noted by no
+        // playlist loader for the audio group), we want to do a destructive reset of the
+        // main segment loader and not restart the audio loaders
+        mainSegmentLoader.setAudio(true); // don't have to worry about disabling the audio of the audio segment loader since
+        // it should be stopped
+
+        mainSegmentLoader.resetEverything();
+        return;
+      } // although the segment loader is an audio segment loader, call the setAudio
+      // function to ensure it is prepared to re-append the init segment (or handle other
+      // config changes)
+
+      segmentLoader.setAudio(true);
+      mainSegmentLoader.setAudio(false);
+    }
+    if (previousActiveLoader === activeGroup.playlistLoader) {
+      // Nothing has actually changed. This can happen because track change events can fire
+      // multiple times for a "single" change. One for enabling the new active track, and
+      // one for disabling the track that was active
+      startLoaders(activeGroup.playlistLoader, mediaType);
+      return;
+    }
+    if (segmentLoader.track) {
+      // For WebVTT, set the new text track in the segmentloader
+      segmentLoader.track(activeTrack);
+    } // destructive reset
+
+    segmentLoader.resetEverything();
+    startLoaders(activeGroup.playlistLoader, mediaType);
+  };
+  const onError = {
+    /**
+     * Returns a function to be called when a SegmentLoader or PlaylistLoader encounters
+     * an error.
+     *
+     * @param {string} type
+     *        MediaGroup type
+     * @param {Object} settings
+     *        Object containing required information for media groups
+     * @return {Function}
+     *         Error handler. Logs warning (or error if the playlist is excluded) to
+     *         console and switches back to default audio track.
+     * @function onError.AUDIO
+     */
+    AUDIO: (type, settings) => () => {
+      const {
+        mediaTypes: {
+          [type]: mediaType
+        },
+        excludePlaylist
+      } = settings; // switch back to default audio track
+
+      const activeTrack = mediaType.activeTrack();
+      const activeGroup = mediaType.activeGroup();
+      const id = (activeGroup.filter(group => group.default)[0] || activeGroup[0]).id;
+      const defaultTrack = mediaType.tracks[id];
+      if (activeTrack === defaultTrack) {
+        // Default track encountered an error. All we can do now is exclude the current
+        // rendition and hope another will switch audio groups
+        excludePlaylist({
+          error: {
+            message: 'Problem encountered loading the default audio track.'
+          }
+        });
+        return;
+      }
+      videojs.log.warn('Problem encountered loading the alternate audio track.' + 'Switching back to default.');
+      for (const trackId in mediaType.tracks) {
+        mediaType.tracks[trackId].enabled = mediaType.tracks[trackId] === defaultTrack;
+      }
+      mediaType.onTrackChanged();
+    },
+    /**
+     * Returns a function to be called when a SegmentLoader or PlaylistLoader encounters
+     * an error.
+     *
+     * @param {string} type
+     *        MediaGroup type
+     * @param {Object} settings
+     *        Object containing required information for media groups
+     * @return {Function}
+     *         Error handler. Logs warning to console and disables the active subtitle track
+     * @function onError.SUBTITLES
+     */
+    SUBTITLES: (type, settings) => () => {
+      const {
+        mediaTypes: {
+          [type]: mediaType
+        }
+      } = settings;
+      videojs.log.warn('Problem encountered loading the subtitle track.' + 'Disabling subtitle track.');
+      const track = mediaType.activeTrack();
+      if (track) {
+        track.mode = 'disabled';
+      }
+      mediaType.onTrackChanged();
+    }
+  };
+  const setupListeners = {
+    /**
+     * Setup event listeners for audio playlist loader
+     *
+     * @param {string} type
+     *        MediaGroup type
+     * @param {PlaylistLoader|null} playlistLoader
+     *        PlaylistLoader to register listeners on
+     * @param {Object} settings
+     *        Object containing required information for media groups
+     * @function setupListeners.AUDIO
+     */
+    AUDIO: (type, playlistLoader, settings) => {
+      if (!playlistLoader) {
+        // no playlist loader means audio will be muxed with the video
+        return;
+      }
+      const {
+        tech,
+        requestOptions,
+        segmentLoaders: {
+          [type]: segmentLoader
+        }
+      } = settings;
+      playlistLoader.on('loadedmetadata', () => {
+        const media = playlistLoader.media();
+        segmentLoader.playlist(media, requestOptions); // if the video is already playing, or if this isn't a live video and preload
+        // permits, start downloading segments
+
+        if (!tech.paused() || media.endList && tech.preload() !== 'none') {
+          segmentLoader.load();
+        }
+      });
+      playlistLoader.on('loadedplaylist', () => {
+        segmentLoader.playlist(playlistLoader.media(), requestOptions); // If the player isn't paused, ensure that the segment loader is running
+
+        if (!tech.paused()) {
+          segmentLoader.load();
+        }
+      });
+      playlistLoader.on('error', onError[type](type, settings));
+    },
+    /**
+     * Setup event listeners for subtitle playlist loader
+     *
+     * @param {string} type
+     *        MediaGroup type
+     * @param {PlaylistLoader|null} playlistLoader
+     *        PlaylistLoader to register listeners on
+     * @param {Object} settings
+     *        Object containing required information for media groups
+     * @function setupListeners.SUBTITLES
+     */
+    SUBTITLES: (type, playlistLoader, settings) => {
+      const {
+        tech,
+        requestOptions,
+        segmentLoaders: {
+          [type]: segmentLoader
+        },
+        mediaTypes: {
+          [type]: mediaType
+        }
+      } = settings;
+      playlistLoader.on('loadedmetadata', () => {
+        const media = playlistLoader.media();
+        segmentLoader.playlist(media, requestOptions);
+        segmentLoader.track(mediaType.activeTrack()); // if the video is already playing, or if this isn't a live video and preload
+        // permits, start downloading segments
+
+        if (!tech.paused() || media.endList && tech.preload() !== 'none') {
+          segmentLoader.load();
+        }
+      });
+      playlistLoader.on('loadedplaylist', () => {
+        segmentLoader.playlist(playlistLoader.media(), requestOptions); // If the player isn't paused, ensure that the segment loader is running
+
+        if (!tech.paused()) {
+          segmentLoader.load();
+        }
+      });
+      playlistLoader.on('error', onError[type](type, settings));
+    }
+  };
+  const initialize = {
+    /**
+     * Setup PlaylistLoaders and AudioTracks for the audio groups
+     *
+     * @param {string} type
+     *        MediaGroup type
+     * @param {Object} settings
+     *        Object containing required information for media groups
+     * @function initialize.AUDIO
+     */
+    'AUDIO': (type, settings) => {
+      const {
+        vhs,
+        sourceType,
+        segmentLoaders: {
+          [type]: segmentLoader
+        },
+        requestOptions,
+        main: {
+          mediaGroups
+        },
+        mediaTypes: {
+          [type]: {
+            groups,
+            tracks,
+            logger_
+          }
+        },
+        mainPlaylistLoader
+      } = settings;
+      const audioOnlyMain = isAudioOnly(mainPlaylistLoader.main); // force a default if we have none
+
+      if (!mediaGroups[type] || Object.keys(mediaGroups[type]).length === 0) {
+        mediaGroups[type] = {
+          main: {
+            default: {
+              default: true
+            }
+          }
+        };
+        if (audioOnlyMain) {
+          mediaGroups[type].main.default.playlists = mainPlaylistLoader.main.playlists;
+        }
+      }
+      for (const groupId in mediaGroups[type]) {
+        if (!groups[groupId]) {
+          groups[groupId] = [];
+        }
+        for (const variantLabel in mediaGroups[type][groupId]) {
+          let properties = mediaGroups[type][groupId][variantLabel];
+          let playlistLoader;
+          if (audioOnlyMain) {
+            logger_(`AUDIO group '${groupId}' label '${variantLabel}' is a main playlist`);
+            properties.isMainPlaylist = true;
+            playlistLoader = null; // if vhs-json was provided as the source, and the media playlist was resolved,
+            // use the resolved media playlist object
+          } else if (sourceType === 'vhs-json' && properties.playlists) {
+            playlistLoader = new PlaylistLoader(properties.playlists[0], vhs, requestOptions);
+          } else if (properties.resolvedUri) {
+            playlistLoader = new PlaylistLoader(properties.resolvedUri, vhs, requestOptions); // TODO: dash isn't the only type with properties.playlists
+            // should we even have properties.playlists in this check.
+          } else if (properties.playlists && sourceType === 'dash') {
+            playlistLoader = new DashPlaylistLoader(properties.playlists[0], vhs, requestOptions, mainPlaylistLoader);
+          } else {
+            // no resolvedUri means the audio is muxed with the video when using this
+            // audio track
+            playlistLoader = null;
+          }
+          properties = merge({
+            id: variantLabel,
+            playlistLoader
+          }, properties);
+          setupListeners[type](type, properties.playlistLoader, settings);
+          groups[groupId].push(properties);
+          if (typeof tracks[variantLabel] === 'undefined') {
+            const track = new videojs.AudioTrack({
+              id: variantLabel,
+              kind: audioTrackKind_(properties),
+              enabled: false,
+              language: properties.language,
+              default: properties.default,
+              label: variantLabel
+            });
+            tracks[variantLabel] = track;
+          }
+        }
+      } // setup single error event handler for the segment loader
+
+      segmentLoader.on('error', onError[type](type, settings));
+    },
+    /**
+     * Setup PlaylistLoaders and TextTracks for the subtitle groups
+     *
+     * @param {string} type
+     *        MediaGroup type
+     * @param {Object} settings
+     *        Object containing required information for media groups
+     * @function initialize.SUBTITLES
+     */
+    'SUBTITLES': (type, settings) => {
+      const {
+        tech,
+        vhs,
+        sourceType,
+        segmentLoaders: {
+          [type]: segmentLoader
+        },
+        requestOptions,
+        main: {
+          mediaGroups
+        },
+        mediaTypes: {
+          [type]: {
+            groups,
+            tracks
+          }
+        },
+        mainPlaylistLoader
+      } = settings;
+      for (const groupId in mediaGroups[type]) {
+        if (!groups[groupId]) {
+          groups[groupId] = [];
+        }
+        for (const variantLabel in mediaGroups[type][groupId]) {
+          if (!vhs.options_.useForcedSubtitles && mediaGroups[type][groupId][variantLabel].forced) {
+            // Subtitle playlists with the forced attribute are not selectable in Safari.
+            // According to Apple's HLS Authoring Specification:
+            //   If content has forced subtitles and regular subtitles in a given language,
+            //   the regular subtitles track in that language MUST contain both the forced
+            //   subtitles and the regular subtitles for that language.
+            // Because of this requirement and that Safari does not add forced subtitles,
+            // forced subtitles are skipped here to maintain consistent experience across
+            // all platforms
+            continue;
+          }
+          let properties = mediaGroups[type][groupId][variantLabel];
+          let playlistLoader;
+          if (sourceType === 'hls') {
+            playlistLoader = new PlaylistLoader(properties.resolvedUri, vhs, requestOptions);
+          } else if (sourceType === 'dash') {
+            const playlists = properties.playlists.filter(p => p.excludeUntil !== Infinity);
+            if (!playlists.length) {
+              return;
+            }
+            playlistLoader = new DashPlaylistLoader(properties.playlists[0], vhs, requestOptions, mainPlaylistLoader);
+          } else if (sourceType === 'vhs-json') {
+            playlistLoader = new PlaylistLoader(
+            // if the vhs-json object included the media playlist, use the media playlist
+            // as provided, otherwise use the resolved URI to load the playlist
+            properties.playlists ? properties.playlists[0] : properties.resolvedUri, vhs, requestOptions);
+          }
+          properties = merge({
+            id: variantLabel,
+            playlistLoader
+          }, properties);
+          setupListeners[type](type, properties.playlistLoader, settings);
+          groups[groupId].push(properties);
+          if (typeof tracks[variantLabel] === 'undefined') {
+            const track = tech.addRemoteTextTrack({
+              id: variantLabel,
+              kind: 'subtitles',
+              default: properties.default && properties.autoselect,
+              language: properties.language,
+              label: variantLabel
+            }, false).track;
+            tracks[variantLabel] = track;
+          }
+        }
+      } // setup single error event handler for the segment loader
+
+      segmentLoader.on('error', onError[type](type, settings));
+    },
+    /**
+     * Setup TextTracks for the closed-caption groups
+     *
+     * @param {String} type
+     *        MediaGroup type
+     * @param {Object} settings
+     *        Object containing required information for media groups
+     * @function initialize['CLOSED-CAPTIONS']
+     */
+    'CLOSED-CAPTIONS': (type, settings) => {
+      const {
+        tech,
+        main: {
+          mediaGroups
+        },
+        mediaTypes: {
+          [type]: {
+            groups,
+            tracks
+          }
+        }
+      } = settings;
+      for (const groupId in mediaGroups[type]) {
+        if (!groups[groupId]) {
+          groups[groupId] = [];
+        }
+        for (const variantLabel in mediaGroups[type][groupId]) {
+          const properties = mediaGroups[type][groupId][variantLabel]; // Look for either 608 (CCn) or 708 (SERVICEn) caption services
+
+          if (!/^(?:CC|SERVICE)/.test(properties.instreamId)) {
+            continue;
+          }
+          const captionServices = tech.options_.vhs && tech.options_.vhs.captionServices || {};
+          let newProps = {
+            label: variantLabel,
+            language: properties.language,
+            instreamId: properties.instreamId,
+            default: properties.default && properties.autoselect
+          };
+          if (captionServices[newProps.instreamId]) {
+            newProps = merge(newProps, captionServices[newProps.instreamId]);
+          }
+          if (newProps.default === undefined) {
+            delete newProps.default;
+          } // No PlaylistLoader is required for Closed-Captions because the captions are
+          // embedded within the video stream
+
+          groups[groupId].push(merge({
+            id: variantLabel
+          }, properties));
+          if (typeof tracks[variantLabel] === 'undefined') {
+            const track = tech.addRemoteTextTrack({
+              id: newProps.instreamId,
+              kind: 'captions',
+              default: newProps.default,
+              language: newProps.language,
+              label: newProps.label
+            }, false).track;
+            tracks[variantLabel] = track;
+          }
+        }
+      }
+    }
+  };
+  const groupMatch = (list, media) => {
+    for (let i = 0; i < list.length; i++) {
+      if (playlistMatch(media, list[i])) {
+        return true;
+      }
+      if (list[i].playlists && groupMatch(list[i].playlists, media)) {
+        return true;
+      }
+    }
+    return false;
+  };
+  /**
+   * Returns a function used to get the active group of the provided type
+   *
+   * @param {string} type
+   *        MediaGroup type
+   * @param {Object} settings
+   *        Object containing required information for media groups
+   * @return {Function}
+   *         Function that returns the active media group for the provided type. Takes an
+   *         optional parameter {TextTrack} track. If no track is provided, a list of all
+   *         variants in the group, otherwise the variant corresponding to the provided
+   *         track is returned.
+   * @function activeGroup
+   */
+
+  const activeGroup = (type, settings) => track => {
+    const {
+      mainPlaylistLoader,
+      mediaTypes: {
+        [type]: {
+          groups
+        }
+      }
+    } = settings;
+    const media = mainPlaylistLoader.media();
+    if (!media) {
+      return null;
+    }
+    let variants = null; // set to variants to main media active group
+
+    if (media.attributes[type]) {
+      variants = groups[media.attributes[type]];
+    }
+    const groupKeys = Object.keys(groups);
+    if (!variants) {
+      // find the mainPlaylistLoader media
+      // that is in a media group if we are dealing
+      // with audio only
+      if (type === 'AUDIO' && groupKeys.length > 1 && isAudioOnly(settings.main)) {
+        for (let i = 0; i < groupKeys.length; i++) {
+          const groupPropertyList = groups[groupKeys[i]];
+          if (groupMatch(groupPropertyList, media)) {
+            variants = groupPropertyList;
+            break;
+          }
+        } // use the main group if it exists
+      } else if (groups.main) {
+        variants = groups.main; // only one group, use that one
+      } else if (groupKeys.length === 1) {
+        variants = groups[groupKeys[0]];
+      }
+    }
+    if (typeof track === 'undefined') {
+      return variants;
+    }
+    if (track === null || !variants) {
+      // An active track was specified so a corresponding group is expected. track === null
+      // means no track is currently active so there is no corresponding group
+      return null;
+    }
+    return variants.filter(props => props.id === track.id)[0] || null;
+  };
+  const activeTrack = {
+    /**
+     * Returns a function used to get the active track of type provided
+     *
+     * @param {string} type
+     *        MediaGroup type
+     * @param {Object} settings
+     *        Object containing required information for media groups
+     * @return {Function}
+     *         Function that returns the active media track for the provided type. Returns
+     *         null if no track is active
+     * @function activeTrack.AUDIO
+     */
+    AUDIO: (type, settings) => () => {
+      const {
+        mediaTypes: {
+          [type]: {
+            tracks
+          }
+        }
+      } = settings;
+      for (const id in tracks) {
+        if (tracks[id].enabled) {
+          return tracks[id];
+        }
+      }
+      return null;
+    },
+    /**
+     * Returns a function used to get the active track of type provided
+     *
+     * @param {string} type
+     *        MediaGroup type
+     * @param {Object} settings
+     *        Object containing required information for media groups
+     * @return {Function}
+     *         Function that returns the active media track for the provided type. Returns
+     *         null if no track is active
+     * @function activeTrack.SUBTITLES
+     */
+    SUBTITLES: (type, settings) => () => {
+      const {
+        mediaTypes: {
+          [type]: {
+            tracks
+          }
+        }
+      } = settings;
+      for (const id in tracks) {
+        if (tracks[id].mode === 'showing' || tracks[id].mode === 'hidden') {
+          return tracks[id];
+        }
+      }
+      return null;
+    }
+  };
+  const getActiveGroup = (type, {
+    mediaTypes
+  }) => () => {
+    const activeTrack_ = mediaTypes[type].activeTrack();
+    if (!activeTrack_) {
+      return null;
+    }
+    return mediaTypes[type].activeGroup(activeTrack_);
+  };
+  /**
+   * Setup PlaylistLoaders and Tracks for media groups (Audio, Subtitles,
+   * Closed-Captions) specified in the main manifest.
+   *
+   * @param {Object} settings
+   *        Object containing required information for setting up the media groups
+   * @param {Tech} settings.tech
+   *        The tech of the player
+   * @param {Object} settings.requestOptions
+   *        XHR request options used by the segment loaders
+   * @param {PlaylistLoader} settings.mainPlaylistLoader
+   *        PlaylistLoader for the main source
+   * @param {VhsHandler} settings.vhs
+   *        VHS SourceHandler
+   * @param {Object} settings.main
+   *        The parsed main manifest
+   * @param {Object} settings.mediaTypes
+   *        Object to store the loaders, tracks, and utility methods for each media type
+   * @param {Function} settings.excludePlaylist
+   *        Excludes the current rendition and forces a rendition switch.
+   * @function setupMediaGroups
+   */
+
+  const setupMediaGroups = settings => {
+    ['AUDIO', 'SUBTITLES', 'CLOSED-CAPTIONS'].forEach(type => {
+      initialize[type](type, settings);
+    });
+    const {
+      mediaTypes,
+      mainPlaylistLoader,
+      tech,
+      vhs,
+      segmentLoaders: {
+        ['AUDIO']: audioSegmentLoader,
+        main: mainSegmentLoader
+      }
+    } = settings; // setup active group and track getters and change event handlers
+
+    ['AUDIO', 'SUBTITLES'].forEach(type => {
+      mediaTypes[type].activeGroup = activeGroup(type, settings);
+      mediaTypes[type].activeTrack = activeTrack[type](type, settings);
+      mediaTypes[type].onGroupChanged = onGroupChanged(type, settings);
+      mediaTypes[type].onGroupChanging = onGroupChanging(type, settings);
+      mediaTypes[type].onTrackChanged = onTrackChanged(type, settings);
+      mediaTypes[type].getActiveGroup = getActiveGroup(type, settings);
+    }); // DO NOT enable the default subtitle or caption track.
+    // DO enable the default audio track
+
+    const audioGroup = mediaTypes.AUDIO.activeGroup();
+    if (audioGroup) {
+      const groupId = (audioGroup.filter(group => group.default)[0] || audioGroup[0]).id;
+      mediaTypes.AUDIO.tracks[groupId].enabled = true;
+      mediaTypes.AUDIO.onGroupChanged();
+      mediaTypes.AUDIO.onTrackChanged();
+      const activeAudioGroup = mediaTypes.AUDIO.getActiveGroup(); // a similar check for handling setAudio on each loader is run again each time the
+      // track is changed, but needs to be handled here since the track may not be considered
+      // changed on the first call to onTrackChanged
+
+      if (!activeAudioGroup.playlistLoader) {
+        // either audio is muxed with video or the stream is audio only
+        mainSegmentLoader.setAudio(true);
+      } else {
+        // audio is demuxed
+        mainSegmentLoader.setAudio(false);
+        audioSegmentLoader.setAudio(true);
+      }
+    }
+    mainPlaylistLoader.on('mediachange', () => {
+      ['AUDIO', 'SUBTITLES'].forEach(type => mediaTypes[type].onGroupChanged());
+    });
+    mainPlaylistLoader.on('mediachanging', () => {
+      ['AUDIO', 'SUBTITLES'].forEach(type => mediaTypes[type].onGroupChanging());
+    }); // custom audio track change event handler for usage event
+
+    const onAudioTrackChanged = () => {
+      mediaTypes.AUDIO.onTrackChanged();
+      tech.trigger({
+        type: 'usage',
+        name: 'vhs-audio-change'
+      });
+    };
+    tech.audioTracks().addEventListener('change', onAudioTrackChanged);
+    tech.remoteTextTracks().addEventListener('change', mediaTypes.SUBTITLES.onTrackChanged);
+    vhs.on('dispose', () => {
+      tech.audioTracks().removeEventListener('change', onAudioTrackChanged);
+      tech.remoteTextTracks().removeEventListener('change', mediaTypes.SUBTITLES.onTrackChanged);
+    }); // clear existing audio tracks and add the ones we just created
+
+    tech.clearTracks('audio');
+    for (const id in mediaTypes.AUDIO.tracks) {
+      tech.audioTracks().addTrack(mediaTypes.AUDIO.tracks[id]);
+    }
+  };
+  /**
+   * Creates skeleton object used to store the loaders, tracks, and utility methods for each
+   * media type
+   *
+   * @return {Object}
+   *         Object to store the loaders, tracks, and utility methods for each media type
+   * @function createMediaTypes
+   */
+
+  const createMediaTypes = () => {
+    const mediaTypes = {};
+    ['AUDIO', 'SUBTITLES', 'CLOSED-CAPTIONS'].forEach(type => {
+      mediaTypes[type] = {
+        groups: {},
+        tracks: {},
+        activePlaylistLoader: null,
+        activeGroup: noop,
+        activeTrack: noop,
+        getActiveGroup: noop,
+        onGroupChanged: noop,
+        onTrackChanged: noop,
+        lastTrack_: null,
+        logger_: logger(`MediaGroups[${type}]`)
+      };
+    });
+    return mediaTypes;
+  };
+
+  /**
+   * A utility class for setting properties and maintaining the state of the content steering manifest.
+   *
+   * Content Steering manifest format:
+   * VERSION: number (required) currently only version 1 is supported.
+   * TTL: number in seconds (optional) until the next content steering manifest reload.
+   * RELOAD-URI: string (optional) uri to fetch the next content steering manifest.
+   * SERVICE-LOCATION-PRIORITY or PATHWAY-PRIORITY a non empty array of unique string values.
+   * PATHWAY-CLONES: array (optional) (HLS only) pathway clone objects to copy from other playlists.
+   */
+
+  class SteeringManifest {
+    constructor() {
+      this.priority_ = [];
+      this.pathwayClones_ = new Map();
+    }
+    set version(number) {
+      // Only version 1 is currently supported for both DASH and HLS.
+      if (number === 1) {
+        this.version_ = number;
+      }
+    }
+    set ttl(seconds) {
+      // TTL = time-to-live, default = 300 seconds.
+      this.ttl_ = seconds || 300;
+    }
+    set reloadUri(uri) {
+      if (uri) {
+        // reload URI can be relative to the previous reloadUri.
+        this.reloadUri_ = resolveUrl(this.reloadUri_, uri);
+      }
+    }
+    set priority(array) {
+      // priority must be non-empty and unique values.
+      if (array && array.length) {
+        this.priority_ = array;
+      }
+    }
+    set pathwayClones(array) {
+      // pathwayClones must be non-empty.
+      if (array && array.length) {
+        this.pathwayClones_ = new Map(array.map(clone => [clone.ID, clone]));
+      }
+    }
+    get version() {
+      return this.version_;
+    }
+    get ttl() {
+      return this.ttl_;
+    }
+    get reloadUri() {
+      return this.reloadUri_;
+    }
+    get priority() {
+      return this.priority_;
+    }
+    get pathwayClones() {
+      return this.pathwayClones_;
+    }
+  }
+  /**
+   * This class represents a content steering manifest and associated state. See both HLS and DASH specifications.
+   * HLS: https://developer.apple.com/streaming/HLSContentSteeringSpecification.pdf and
+   * https://datatracker.ietf.org/doc/draft-pantos-hls-rfc8216bis/ section 4.4.6.6.
+   * DASH: https://dashif.org/docs/DASH-IF-CTS-00XX-Content-Steering-Community-Review.pdf
+   *
+   * @param {function} xhr for making a network request from the browser.
+   * @param {function} bandwidth for fetching the current bandwidth from the main segment loader.
+   */
+
+  class ContentSteeringController extends videojs.EventTarget {
+    constructor(xhr, bandwidth) {
+      super();
+      this.currentPathway = null;
+      this.defaultPathway = null;
+      this.queryBeforeStart = false;
+      this.availablePathways_ = new Set();
+      this.steeringManifest = new SteeringManifest();
+      this.proxyServerUrl_ = null;
+      this.manifestType_ = null;
+      this.ttlTimeout_ = null;
+      this.request_ = null;
+      this.currentPathwayClones = new Map();
+      this.nextPathwayClones = new Map();
+      this.excludedSteeringManifestURLs = new Set();
+      this.logger_ = logger('Content Steering');
+      this.xhr_ = xhr;
+      this.getBandwidth_ = bandwidth;
+    }
+    /**
+     * Assigns the content steering tag properties to the steering controller
+     *
+     * @param {string} baseUrl the baseURL from the main manifest for resolving the steering manifest url
+     * @param {Object} steeringTag the content steering tag from the main manifest
+     */
+
+    assignTagProperties(baseUrl, steeringTag) {
+      this.manifestType_ = steeringTag.serverUri ? 'HLS' : 'DASH'; // serverUri is HLS serverURL is DASH
+
+      const steeringUri = steeringTag.serverUri || steeringTag.serverURL;
+      if (!steeringUri) {
+        this.logger_(`steering manifest URL is ${steeringUri}, cannot request steering manifest.`);
+        this.trigger('error');
+        return;
+      } // Content steering manifests can be encoded as a data URI. We can decode, parse and return early if that's the case.
+
+      if (steeringUri.startsWith('data:')) {
+        this.decodeDataUriManifest_(steeringUri.substring(steeringUri.indexOf(',') + 1));
+        return;
+      } // reloadUri is the resolution of the main manifest URL and steering URL.
+
+      this.steeringManifest.reloadUri = resolveUrl(baseUrl, steeringUri); // pathwayId is HLS defaultServiceLocation is DASH
+
+      this.defaultPathway = steeringTag.pathwayId || steeringTag.defaultServiceLocation; // currently only DASH supports the following properties on <ContentSteering> tags.
+
+      this.queryBeforeStart = steeringTag.queryBeforeStart;
+      this.proxyServerUrl_ = steeringTag.proxyServerURL; // trigger a steering event if we have a pathway from the content steering tag.
+      // this tells VHS which segment pathway to start with.
+      // If queryBeforeStart is true we need to wait for the steering manifest response.
+
+      if (this.defaultPathway && !this.queryBeforeStart) {
+        this.trigger('content-steering');
+      }
+    }
+    /**
+     * Requests the content steering manifest and parse the response. This should only be called after
+     * assignTagProperties was called with a content steering tag.
+     *
+     * @param {string} initialUri The optional uri to make the request with.
+     *    If set, the request should be made with exactly what is passed in this variable.
+     *    This scenario should only happen once on initalization.
+     */
+
+    requestSteeringManifest(initial) {
+      const reloadUri = this.steeringManifest.reloadUri;
+      if (!reloadUri) {
+        return;
+      } // We currently don't support passing MPD query parameters directly to the content steering URL as this requires
+      // ExtUrlQueryInfo tag support. See the DASH content steering spec section 8.1.
+      // This request URI accounts for manifest URIs that have been excluded.
+
+      const uri = initial ? reloadUri : this.getRequestURI(reloadUri); // If there are no valid manifest URIs, we should stop content steering.
+
+      if (!uri) {
+        this.logger_('No valid content steering manifest URIs. Stopping content steering.');
+        this.trigger('error');
+        this.dispose();
+        return;
+      }
+      this.request_ = this.xhr_({
+        uri,
+        requestType: 'content-steering-manifest'
+      }, (error, errorInfo) => {
+        if (error) {
+          // If the client receives HTTP 410 Gone in response to a manifest request,
+          // it MUST NOT issue another request for that URI for the remainder of the
+          // playback session. It MAY continue to use the most-recently obtained set
+          // of Pathways.
+          if (errorInfo.status === 410) {
+            this.logger_(`manifest request 410 ${error}.`);
+            this.logger_(`There will be no more content steering requests to ${uri} this session.`);
+            this.excludedSteeringManifestURLs.add(uri);
+            return;
+          } // If the client receives HTTP 429 Too Many Requests with a Retry-After
+          // header in response to a manifest request, it SHOULD wait until the time
+          // specified by the Retry-After header to reissue the request.
+
+          if (errorInfo.status === 429) {
+            const retrySeconds = errorInfo.responseHeaders['retry-after'];
+            this.logger_(`manifest request 429 ${error}.`);
+            this.logger_(`content steering will retry in ${retrySeconds} seconds.`);
+            this.startTTLTimeout_(parseInt(retrySeconds, 10));
+            return;
+          } // If the Steering Manifest cannot be loaded and parsed correctly, the
+          // client SHOULD continue to use the previous values and attempt to reload
+          // it after waiting for the previously-specified TTL (or 5 minutes if
+          // none).
+
+          this.logger_(`manifest failed to load ${error}.`);
+          this.startTTLTimeout_();
+          return;
+        }
+        const steeringManifestJson = JSON.parse(this.request_.responseText);
+        this.assignSteeringProperties_(steeringManifestJson);
+        this.startTTLTimeout_();
+      });
+    }
+    /**
+     * Set the proxy server URL and add the steering manifest url as a URI encoded parameter.
+     *
+     * @param {string} steeringUrl the steering manifest url
+     * @return the steering manifest url to a proxy server with all parameters set
+     */
+
+    setProxyServerUrl_(steeringUrl) {
+      const steeringUrlObject = new window.URL(steeringUrl);
+      const proxyServerUrlObject = new window.URL(this.proxyServerUrl_);
+      proxyServerUrlObject.searchParams.set('url', encodeURI(steeringUrlObject.toString()));
+      return this.setSteeringParams_(proxyServerUrlObject.toString());
+    }
+    /**
+     * Decodes and parses the data uri encoded steering manifest
+     *
+     * @param {string} dataUri the data uri to be decoded and parsed.
+     */
+
+    decodeDataUriManifest_(dataUri) {
+      const steeringManifestJson = JSON.parse(window.atob(dataUri));
+      this.assignSteeringProperties_(steeringManifestJson);
+    }
+    /**
+     * Set the HLS or DASH content steering manifest request query parameters. For example:
+     * _HLS_pathway="<CURRENT-PATHWAY-ID>" and _HLS_throughput=<THROUGHPUT>
+     * _DASH_pathway and _DASH_throughput
+     *
+     * @param {string} uri to add content steering server parameters to.
+     * @return a new uri as a string with the added steering query parameters.
+     */
+
+    setSteeringParams_(url) {
+      const urlObject = new window.URL(url);
+      const path = this.getPathway();
+      const networkThroughput = this.getBandwidth_();
+      if (path) {
+        const pathwayKey = `_${this.manifestType_}_pathway`;
+        urlObject.searchParams.set(pathwayKey, path);
+      }
+      if (networkThroughput) {
+        const throughputKey = `_${this.manifestType_}_throughput`;
+        urlObject.searchParams.set(throughputKey, networkThroughput);
+      }
+      return urlObject.toString();
+    }
+    /**
+     * Assigns the current steering manifest properties and to the SteeringManifest object
+     *
+     * @param {Object} steeringJson the raw JSON steering manifest
+     */
+
+    assignSteeringProperties_(steeringJson) {
+      this.steeringManifest.version = steeringJson.VERSION;
+      if (!this.steeringManifest.version) {
+        this.logger_(`manifest version is ${steeringJson.VERSION}, which is not supported.`);
+        this.trigger('error');
+        return;
+      }
+      this.steeringManifest.ttl = steeringJson.TTL;
+      this.steeringManifest.reloadUri = steeringJson['RELOAD-URI']; // HLS = PATHWAY-PRIORITY required. DASH = SERVICE-LOCATION-PRIORITY optional
+
+      this.steeringManifest.priority = steeringJson['PATHWAY-PRIORITY'] || steeringJson['SERVICE-LOCATION-PRIORITY']; // Pathway clones to be created/updated in HLS.
+      // See section 7.2 https://datatracker.ietf.org/doc/draft-pantos-hls-rfc8216bis/
+
+      this.steeringManifest.pathwayClones = steeringJson['PATHWAY-CLONES'];
+      this.nextPathwayClones = this.steeringManifest.pathwayClones; // 1. apply first pathway from the array.
+      // 2. if first pathway doesn't exist in manifest, try next pathway.
+      //    a. if all pathways are exhausted, ignore the steering manifest priority.
+      // 3. if segments fail from an established pathway, try all variants/renditions, then exclude the failed pathway.
+      //    a. exclude a pathway for a minimum of the last TTL duration. Meaning, from the next steering response,
+      //       the excluded pathway will be ignored.
+      //       See excludePathway usage in excludePlaylist().
+      // If there are no available pathways, we need to stop content steering.
+
+      if (!this.availablePathways_.size) {
+        this.logger_('There are no available pathways for content steering. Ending content steering.');
+        this.trigger('error');
+        this.dispose();
+      }
+      const chooseNextPathway = pathwaysByPriority => {
+        for (const path of pathwaysByPriority) {
+          if (this.availablePathways_.has(path)) {
+            return path;
+          }
+        } // If no pathway matches, ignore the manifest and choose the first available.
+
+        return [...this.availablePathways_][0];
+      };
+      const nextPathway = chooseNextPathway(this.steeringManifest.priority);
+      if (this.currentPathway !== nextPathway) {
+        this.currentPathway = nextPathway;
+        this.trigger('content-steering');
+      }
+    }
+    /**
+     * Returns the pathway to use for steering decisions
+     *
+     * @return {string} returns the current pathway or the default
+     */
+
+    getPathway() {
+      return this.currentPathway || this.defaultPathway;
+    }
+    /**
+     * Chooses the manifest request URI based on proxy URIs and server URLs.
+     * Also accounts for exclusion on certain manifest URIs.
+     *
+     * @param {string} reloadUri the base uri before parameters
+     *
+     * @return {string} the final URI for the request to the manifest server.
+     */
+
+    getRequestURI(reloadUri) {
+      if (!reloadUri) {
+        return null;
+      }
+      const isExcluded = uri => this.excludedSteeringManifestURLs.has(uri);
+      if (this.proxyServerUrl_) {
+        const proxyURI = this.setProxyServerUrl_(reloadUri);
+        if (!isExcluded(proxyURI)) {
+          return proxyURI;
+        }
+      }
+      const steeringURI = this.setSteeringParams_(reloadUri);
+      if (!isExcluded(steeringURI)) {
+        return steeringURI;
+      } // Return nothing if all valid manifest URIs are excluded.
+
+      return null;
+    }
+    /**
+     * Start the timeout for re-requesting the steering manifest at the TTL interval.
+     *
+     * @param {number} ttl time in seconds of the timeout. Defaults to the
+     *        ttl interval in the steering manifest
+     */
+
+    startTTLTimeout_(ttl = this.steeringManifest.ttl) {
+      // 300 (5 minutes) is the default value.
+      const ttlMS = ttl * 1000;
+      this.ttlTimeout_ = window.setTimeout(() => {
+        this.requestSteeringManifest();
+      }, ttlMS);
+    }
+    /**
+     * Clear the TTL timeout if necessary.
+     */
+
+    clearTTLTimeout_() {
+      window.clearTimeout(this.ttlTimeout_);
+      this.ttlTimeout_ = null;
+    }
+    /**
+     * aborts any current steering xhr and sets the current request object to null
+     */
+
+    abort() {
+      if (this.request_) {
+        this.request_.abort();
+      }
+      this.request_ = null;
+    }
+    /**
+     * aborts steering requests clears the ttl timeout and resets all properties.
+     */
+
+    dispose() {
+      this.off('content-steering');
+      this.off('error');
+      this.abort();
+      this.clearTTLTimeout_();
+      this.currentPathway = null;
+      this.defaultPathway = null;
+      this.queryBeforeStart = null;
+      this.proxyServerUrl_ = null;
+      this.manifestType_ = null;
+      this.ttlTimeout_ = null;
+      this.request_ = null;
+      this.excludedSteeringManifestURLs = new Set();
+      this.availablePathways_ = new Set();
+      this.steeringManifest = new SteeringManifest();
+    }
+    /**
+     * adds a pathway to the available pathways set
+     *
+     * @param {string} pathway the pathway string to add
+     */
+
+    addAvailablePathway(pathway) {
+      if (pathway) {
+        this.availablePathways_.add(pathway);
+      }
+    }
+    /**
+     * Clears all pathways from the available pathways set
+     */
+
+    clearAvailablePathways() {
+      this.availablePathways_.clear();
+    }
+    /**
+     * Removes a pathway from the available pathways set.
+     */
+
+    excludePathway(pathway) {
+      return this.availablePathways_.delete(pathway);
+    }
+    /**
+     * Checks the refreshed DASH manifest content steering tag for changes.
+     *
+     * @param {string} baseURL new steering tag on DASH manifest refresh
+     * @param {Object} newTag the new tag to check for changes
+     * @return a true or false whether the new tag has different values
+     */
+
+    didDASHTagChange(baseURL, newTag) {
+      return !newTag && this.steeringManifest.reloadUri || newTag && (resolveUrl(baseURL, newTag.serverURL) !== this.steeringManifest.reloadUri || newTag.defaultServiceLocation !== this.defaultPathway || newTag.queryBeforeStart !== this.queryBeforeStart || newTag.proxyServerURL !== this.proxyServerUrl_);
+    }
+    getAvailablePathways() {
+      return this.availablePathways_;
+    }
+  }
+
+  /**
+   * @file playlist-controller.js
+   */
+  const ABORT_EARLY_EXCLUSION_SECONDS = 10;
+  let Vhs$1; // SegmentLoader stats that need to have each loader's
+  // values summed to calculate the final value
+
+  const loaderStats = ['mediaRequests', 'mediaRequestsAborted', 'mediaRequestsTimedout', 'mediaRequestsErrored', 'mediaTransferDuration', 'mediaBytesTransferred', 'mediaAppends'];
+  const sumLoaderStat = function (stat) {
+    return this.audioSegmentLoader_[stat] + this.mainSegmentLoader_[stat];
+  };
+  const shouldSwitchToMedia = function ({
+    currentPlaylist,
+    buffered,
+    currentTime,
+    nextPlaylist,
+    bufferLowWaterLine,
+    bufferHighWaterLine,
+    duration,
+    bufferBasedABR,
+    log
+  }) {
+    // we have no other playlist to switch to
+    if (!nextPlaylist) {
+      videojs.log.warn('We received no playlist to switch to. Please check your stream.');
+      return false;
+    }
+    const sharedLogLine = `allowing switch ${currentPlaylist && currentPlaylist.id || 'null'} -> ${nextPlaylist.id}`;
+    if (!currentPlaylist) {
+      log(`${sharedLogLine} as current playlist is not set`);
+      return true;
+    } // no need to switch if playlist is the same
+
+    if (nextPlaylist.id === currentPlaylist.id) {
+      return false;
+    } // determine if current time is in a buffered range.
+
+    const isBuffered = Boolean(findRange(buffered, currentTime).length); // If the playlist is live, then we want to not take low water line into account.
+    // This is because in LIVE, the player plays 3 segments from the end of the
+    // playlist, and if `BUFFER_LOW_WATER_LINE` is greater than the duration availble
+    // in those segments, a viewer will never experience a rendition upswitch.
+
+    if (!currentPlaylist.endList) {
+      // For LLHLS live streams, don't switch renditions before playback has started, as it almost
+      // doubles the time to first playback.
+      if (!isBuffered && typeof currentPlaylist.partTargetDuration === 'number') {
+        log(`not ${sharedLogLine} as current playlist is live llhls, but currentTime isn't in buffered.`);
+        return false;
+      }
+      log(`${sharedLogLine} as current playlist is live`);
+      return true;
+    }
+    const forwardBuffer = timeAheadOf(buffered, currentTime);
+    const maxBufferLowWaterLine = bufferBasedABR ? Config.EXPERIMENTAL_MAX_BUFFER_LOW_WATER_LINE : Config.MAX_BUFFER_LOW_WATER_LINE; // For the same reason as LIVE, we ignore the low water line when the VOD
+    // duration is below the max potential low water line
+
+    if (duration < maxBufferLowWaterLine) {
+      log(`${sharedLogLine} as duration < max low water line (${duration} < ${maxBufferLowWaterLine})`);
+      return true;
+    }
+    const nextBandwidth = nextPlaylist.attributes.BANDWIDTH;
+    const currBandwidth = currentPlaylist.attributes.BANDWIDTH; // when switching down, if our buffer is lower than the high water line,
+    // we can switch down
+
+    if (nextBandwidth < currBandwidth && (!bufferBasedABR || forwardBuffer < bufferHighWaterLine)) {
+      let logLine = `${sharedLogLine} as next bandwidth < current bandwidth (${nextBandwidth} < ${currBandwidth})`;
+      if (bufferBasedABR) {
+        logLine += ` and forwardBuffer < bufferHighWaterLine (${forwardBuffer} < ${bufferHighWaterLine})`;
+      }
+      log(logLine);
+      return true;
+    } // and if our buffer is higher than the low water line,
+    // we can switch up
+
+    if ((!bufferBasedABR || nextBandwidth > currBandwidth) && forwardBuffer >= bufferLowWaterLine) {
+      let logLine = `${sharedLogLine} as forwardBuffer >= bufferLowWaterLine (${forwardBuffer} >= ${bufferLowWaterLine})`;
+      if (bufferBasedABR) {
+        logLine += ` and next bandwidth > current bandwidth (${nextBandwidth} > ${currBandwidth})`;
+      }
+      log(logLine);
+      return true;
+    }
+    log(`not ${sharedLogLine} as no switching criteria met`);
+    return false;
+  };
+  /**
+   * the main playlist controller controller all interactons
+   * between playlists and segmentloaders. At this time this mainly
+   * involves a main playlist and a series of audio playlists
+   * if they are available
+   *
+   * @class PlaylistController
+   * @extends videojs.EventTarget
+   */
+
+  class PlaylistController extends videojs.EventTarget {
+    constructor(options) {
+      super();
+      const {
+        src,
+        withCredentials,
+        tech,
+        bandwidth,
+        externVhs,
+        useCueTags,
+        playlistExclusionDuration,
+        enableLowInitialPlaylist,
+        sourceType,
+        cacheEncryptionKeys,
+        bufferBasedABR,
+        leastPixelDiffSelector,
+        captionServices
+      } = options;
+      if (!src) {
+        throw new Error('A non-empty playlist URL or JSON manifest string is required');
+      }
+      let {
+        maxPlaylistRetries
+      } = options;
+      if (maxPlaylistRetries === null || typeof maxPlaylistRetries === 'undefined') {
+        maxPlaylistRetries = Infinity;
+      }
+      Vhs$1 = externVhs;
+      this.bufferBasedABR = Boolean(bufferBasedABR);
+      this.leastPixelDiffSelector = Boolean(leastPixelDiffSelector);
+      this.withCredentials = withCredentials;
+      this.tech_ = tech;
+      this.vhs_ = tech.vhs;
+      this.sourceType_ = sourceType;
+      this.useCueTags_ = useCueTags;
+      this.playlistExclusionDuration = playlistExclusionDuration;
+      this.maxPlaylistRetries = maxPlaylistRetries;
+      this.enableLowInitialPlaylist = enableLowInitialPlaylist;
+      if (this.useCueTags_) {
+        this.cueTagsTrack_ = this.tech_.addTextTrack('metadata', 'ad-cues');
+        this.cueTagsTrack_.inBandMetadataTrackDispatchType = '';
+      }
+      this.requestOptions_ = {
+        withCredentials,
+        maxPlaylistRetries,
+        timeout: null
+      };
+      this.on('error', this.pauseLoading);
+      this.mediaTypes_ = createMediaTypes();
+      this.mediaSource = new window.MediaSource();
+      this.handleDurationChange_ = this.handleDurationChange_.bind(this);
+      this.handleSourceOpen_ = this.handleSourceOpen_.bind(this);
+      this.handleSourceEnded_ = this.handleSourceEnded_.bind(this);
+      this.mediaSource.addEventListener('durationchange', this.handleDurationChange_); // load the media source into the player
+
+      this.mediaSource.addEventListener('sourceopen', this.handleSourceOpen_);
+      this.mediaSource.addEventListener('sourceended', this.handleSourceEnded_); // we don't have to handle sourceclose since dispose will handle termination of
+      // everything, and the MediaSource should not be detached without a proper disposal
+
+      this.seekable_ = createTimeRanges();
+      this.hasPlayed_ = false;
+      this.syncController_ = new SyncController(options);
+      this.segmentMetadataTrack_ = tech.addRemoteTextTrack({
+        kind: 'metadata',
+        label: 'segment-metadata'
+      }, false).track;
+      this.decrypter_ = new Decrypter();
+      this.sourceUpdater_ = new SourceUpdater(this.mediaSource);
+      this.inbandTextTracks_ = {};
+      this.timelineChangeController_ = new TimelineChangeController();
+      this.keyStatusMap_ = new Map();
+      const segmentLoaderSettings = {
+        vhs: this.vhs_,
+        parse708captions: options.parse708captions,
+        useDtsForTimestampOffset: options.useDtsForTimestampOffset,
+        captionServices,
+        mediaSource: this.mediaSource,
+        currentTime: this.tech_.currentTime.bind(this.tech_),
+        seekable: () => this.seekable(),
+        seeking: () => this.tech_.seeking(),
+        duration: () => this.duration(),
+        hasPlayed: () => this.hasPlayed_,
+        goalBufferLength: () => this.goalBufferLength(),
+        bandwidth,
+        syncController: this.syncController_,
+        decrypter: this.decrypter_,
+        sourceType: this.sourceType_,
+        inbandTextTracks: this.inbandTextTracks_,
+        cacheEncryptionKeys,
+        sourceUpdater: this.sourceUpdater_,
+        timelineChangeController: this.timelineChangeController_,
+        exactManifestTimings: options.exactManifestTimings,
+        addMetadataToTextTrack: this.addMetadataToTextTrack.bind(this)
+      }; // The source type check not only determines whether a special DASH playlist loader
+      // should be used, but also covers the case where the provided src is a vhs-json
+      // manifest object (instead of a URL). In the case of vhs-json, the default
+      // PlaylistLoader should be used.
+
+      this.mainPlaylistLoader_ = this.sourceType_ === 'dash' ? new DashPlaylistLoader(src, this.vhs_, merge(this.requestOptions_, {
+        addMetadataToTextTrack: this.addMetadataToTextTrack.bind(this)
+      })) : new PlaylistLoader(src, this.vhs_, merge(this.requestOptions_, {
+        addDateRangesToTextTrack: this.addDateRangesToTextTrack_.bind(this)
+      }));
+      this.setupMainPlaylistLoaderListeners_(); // setup segment loaders
+      // combined audio/video or just video when alternate audio track is selected
+
+      this.mainSegmentLoader_ = new SegmentLoader(merge(segmentLoaderSettings, {
+        segmentMetadataTrack: this.segmentMetadataTrack_,
+        loaderType: 'main'
+      }), options); // alternate audio track
+
+      this.audioSegmentLoader_ = new SegmentLoader(merge(segmentLoaderSettings, {
+        loaderType: 'audio'
+      }), options);
+      this.subtitleSegmentLoader_ = new VTTSegmentLoader(merge(segmentLoaderSettings, {
+        loaderType: 'vtt',
+        featuresNativeTextTracks: this.tech_.featuresNativeTextTracks,
+        loadVttJs: () => new Promise((resolve, reject) => {
+          function onLoad() {
+            tech.off('vttjserror', onError);
+            resolve();
+          }
+          function onError() {
+            tech.off('vttjsloaded', onLoad);
+            reject();
+          }
+          tech.one('vttjsloaded', onLoad);
+          tech.one('vttjserror', onError); // safe to call multiple times, script will be loaded only once:
+
+          tech.addWebVttScript_();
+        })
+      }), options);
+      const getBandwidth = () => {
+        return this.mainSegmentLoader_.bandwidth;
+      };
+      this.contentSteeringController_ = new ContentSteeringController(this.vhs_.xhr, getBandwidth);
+      this.setupSegmentLoaderListeners_();
+      if (this.bufferBasedABR) {
+        this.mainPlaylistLoader_.one('loadedplaylist', () => this.startABRTimer_());
+        this.tech_.on('pause', () => this.stopABRTimer_());
+        this.tech_.on('play', () => this.startABRTimer_());
+      } // Create SegmentLoader stat-getters
+      // mediaRequests_
+      // mediaRequestsAborted_
+      // mediaRequestsTimedout_
+      // mediaRequestsErrored_
+      // mediaTransferDuration_
+      // mediaBytesTransferred_
+      // mediaAppends_
+
+      loaderStats.forEach(stat => {
+        this[stat + '_'] = sumLoaderStat.bind(this, stat);
+      });
+      this.logger_ = logger('pc');
+      this.triggeredFmp4Usage = false;
+      if (this.tech_.preload() === 'none') {
+        this.loadOnPlay_ = () => {
+          this.loadOnPlay_ = null;
+          this.mainPlaylistLoader_.load();
+        };
+        this.tech_.one('play', this.loadOnPlay_);
+      } else {
+        this.mainPlaylistLoader_.load();
+      }
+      this.timeToLoadedData__ = -1;
+      this.mainAppendsToLoadedData__ = -1;
+      this.audioAppendsToLoadedData__ = -1;
+      const event = this.tech_.preload() === 'none' ? 'play' : 'loadstart'; // start the first frame timer on loadstart or play (for preload none)
+
+      this.tech_.one(event, () => {
+        const timeToLoadedDataStart = Date.now();
+        this.tech_.one('loadeddata', () => {
+          this.timeToLoadedData__ = Date.now() - timeToLoadedDataStart;
+          this.mainAppendsToLoadedData__ = this.mainSegmentLoader_.mediaAppends;
+          this.audioAppendsToLoadedData__ = this.audioSegmentLoader_.mediaAppends;
+        });
+      });
+    }
+    mainAppendsToLoadedData_() {
+      return this.mainAppendsToLoadedData__;
+    }
+    audioAppendsToLoadedData_() {
+      return this.audioAppendsToLoadedData__;
+    }
+    appendsToLoadedData_() {
+      const main = this.mainAppendsToLoadedData_();
+      const audio = this.audioAppendsToLoadedData_();
+      if (main === -1 || audio === -1) {
+        return -1;
+      }
+      return main + audio;
+    }
+    timeToLoadedData_() {
+      return this.timeToLoadedData__;
+    }
+    /**
+     * Run selectPlaylist and switch to the new playlist if we should
+     *
+     * @param {string} [reason=abr] a reason for why the ABR check is made
+     * @private
+     */
+
+    checkABR_(reason = 'abr') {
+      const nextPlaylist = this.selectPlaylist();
+      if (nextPlaylist && this.shouldSwitchToMedia_(nextPlaylist)) {
+        this.switchMedia_(nextPlaylist, reason);
+      }
+    }
+    switchMedia_(playlist, cause, delay) {
+      const oldMedia = this.media();
+      const oldId = oldMedia && (oldMedia.id || oldMedia.uri);
+      const newId = playlist && (playlist.id || playlist.uri);
+      if (oldId && oldId !== newId) {
+        this.logger_(`switch media ${oldId} -> ${newId} from ${cause}`);
+        this.tech_.trigger({
+          type: 'usage',
+          name: `vhs-rendition-change-${cause}`
+        });
+      }
+      this.mainPlaylistLoader_.media(playlist, delay);
+    }
+    /**
+     * A function that ensures we switch our playlists inside of `mediaTypes`
+     * to match the current `serviceLocation` provided by the contentSteering controller.
+     * We want to check media types of `AUDIO`, `SUBTITLES`, and `CLOSED-CAPTIONS`.
+     *
+     * This should only be called on a DASH playback scenario while using content steering.
+     * This is necessary due to differences in how media in HLS manifests are generally tied to
+     * a video playlist, where in DASH that is not always the case.
+     */
+
+    switchMediaForDASHContentSteering_() {
+      ['AUDIO', 'SUBTITLES', 'CLOSED-CAPTIONS'].forEach(type => {
+        const mediaType = this.mediaTypes_[type];
+        const activeGroup = mediaType ? mediaType.activeGroup() : null;
+        const pathway = this.contentSteeringController_.getPathway();
+        if (activeGroup && pathway) {
+          // activeGroup can be an array or a single group
+          const mediaPlaylists = activeGroup.length ? activeGroup[0].playlists : activeGroup.playlists;
+          const dashMediaPlaylists = mediaPlaylists.filter(p => p.attributes.serviceLocation === pathway); // Switch the current active playlist to the correct CDN
+
+          if (dashMediaPlaylists.length) {
+            this.mediaTypes_[type].activePlaylistLoader.media(dashMediaPlaylists[0]);
+          }
+        }
+      });
+    }
+    /**
+     * Start a timer that periodically calls checkABR_
+     *
+     * @private
+     */
+
+    startABRTimer_() {
+      this.stopABRTimer_();
+      this.abrTimer_ = window.setInterval(() => this.checkABR_(), 250);
+    }
+    /**
+     * Stop the timer that periodically calls checkABR_
+     *
+     * @private
+     */
+
+    stopABRTimer_() {
+      // if we're scrubbing, we don't need to pause.
+      // This getter will be added to Video.js in version 7.11.
+      if (this.tech_.scrubbing && this.tech_.scrubbing()) {
+        return;
+      }
+      window.clearInterval(this.abrTimer_);
+      this.abrTimer_ = null;
+    }
+    /**
+     * Get a list of playlists for the currently selected audio playlist
+     *
+     * @return {Array} the array of audio playlists
+     */
+
+    getAudioTrackPlaylists_() {
+      const main = this.main();
+      const defaultPlaylists = main && main.playlists || []; // if we don't have any audio groups then we can only
+      // assume that the audio tracks are contained in main
+      // playlist array, use that or an empty array.
+
+      if (!main || !main.mediaGroups || !main.mediaGroups.AUDIO) {
+        return defaultPlaylists;
+      }
+      const AUDIO = main.mediaGroups.AUDIO;
+      const groupKeys = Object.keys(AUDIO);
+      let track; // get the current active track
+
+      if (Object.keys(this.mediaTypes_.AUDIO.groups).length) {
+        track = this.mediaTypes_.AUDIO.activeTrack(); // or get the default track from main if mediaTypes_ isn't setup yet
+      } else {
+        // default group is `main` or just the first group.
+        const defaultGroup = AUDIO.main || groupKeys.length && AUDIO[groupKeys[0]];
+        for (const label in defaultGroup) {
+          if (defaultGroup[label].default) {
+            track = {
+              label
+            };
+            break;
+          }
+        }
+      } // no active track no playlists.
+
+      if (!track) {
+        return defaultPlaylists;
+      }
+      const playlists = []; // get all of the playlists that are possible for the
+      // active track.
+
+      for (const group in AUDIO) {
+        if (AUDIO[group][track.label]) {
+          const properties = AUDIO[group][track.label];
+          if (properties.playlists && properties.playlists.length) {
+            playlists.push.apply(playlists, properties.playlists);
+          } else if (properties.uri) {
+            playlists.push(properties);
+          } else if (main.playlists.length) {
+            // if an audio group does not have a uri
+            // see if we have main playlists that use it as a group.
+            // if we do then add those to the playlists list.
+            for (let i = 0; i < main.playlists.length; i++) {
+              const playlist = main.playlists[i];
+              if (playlist.attributes && playlist.attributes.AUDIO && playlist.attributes.AUDIO === group) {
+                playlists.push(playlist);
+              }
+            }
+          }
+        }
+      }
+      if (!playlists.length) {
+        return defaultPlaylists;
+      }
+      return playlists;
+    }
+    /**
+     * Register event handlers on the main playlist loader. A helper
+     * function for construction time.
+     *
+     * @private
+     */
+
+    setupMainPlaylistLoaderListeners_() {
+      this.mainPlaylistLoader_.on('loadedmetadata', () => {
+        const media = this.mainPlaylistLoader_.media();
+        const requestTimeout = media.targetDuration * 1.5 * 1000; // If we don't have any more available playlists, we don't want to
+        // timeout the request.
+
+        if (isLowestEnabledRendition(this.mainPlaylistLoader_.main, this.mainPlaylistLoader_.media())) {
+          this.requestOptions_.timeout = 0;
+        } else {
+          this.requestOptions_.timeout = requestTimeout;
+        } // if this isn't a live video and preload permits, start
+        // downloading segments
+
+        if (media.endList && this.tech_.preload() !== 'none') {
+          this.mainSegmentLoader_.playlist(media, this.requestOptions_);
+          this.mainSegmentLoader_.load();
+        }
+        setupMediaGroups({
+          sourceType: this.sourceType_,
+          segmentLoaders: {
+            AUDIO: this.audioSegmentLoader_,
+            SUBTITLES: this.subtitleSegmentLoader_,
+            main: this.mainSegmentLoader_
+          },
+          tech: this.tech_,
+          requestOptions: this.requestOptions_,
+          mainPlaylistLoader: this.mainPlaylistLoader_,
+          vhs: this.vhs_,
+          main: this.main(),
+          mediaTypes: this.mediaTypes_,
+          excludePlaylist: this.excludePlaylist.bind(this)
+        });
+        this.triggerPresenceUsage_(this.main(), media);
+        this.setupFirstPlay();
+        if (!this.mediaTypes_.AUDIO.activePlaylistLoader || this.mediaTypes_.AUDIO.activePlaylistLoader.media()) {
+          this.trigger('selectedinitialmedia');
+        } else {
+          // We must wait for the active audio playlist loader to
+          // finish setting up before triggering this event so the
+          // representations API and EME setup is correct
+          this.mediaTypes_.AUDIO.activePlaylistLoader.one('loadedmetadata', () => {
+            this.trigger('selectedinitialmedia');
+          });
+        }
+      });
+      this.mainPlaylistLoader_.on('loadedplaylist', () => {
+        if (this.loadOnPlay_) {
+          this.tech_.off('play', this.loadOnPlay_);
+        }
+        let updatedPlaylist = this.mainPlaylistLoader_.media();
+        if (!updatedPlaylist) {
+          // Add content steering listeners on first load and init.
+          this.attachContentSteeringListeners_();
+          this.initContentSteeringController_(); // exclude any variants that are not supported by the browser before selecting
+          // an initial media as the playlist selectors do not consider browser support
+
+          this.excludeUnsupportedVariants_();
+          let selectedMedia;
+          if (this.enableLowInitialPlaylist) {
+            selectedMedia = this.selectInitialPlaylist();
+          }
+          if (!selectedMedia) {
+            selectedMedia = this.selectPlaylist();
+          }
+          if (!selectedMedia || !this.shouldSwitchToMedia_(selectedMedia)) {
+            return;
+          }
+          this.initialMedia_ = selectedMedia;
+          this.switchMedia_(this.initialMedia_, 'initial'); // Under the standard case where a source URL is provided, loadedplaylist will
+          // fire again since the playlist will be requested. In the case of vhs-json
+          // (where the manifest object is provided as the source), when the media
+          // playlist's `segments` list is already available, a media playlist won't be
+          // requested, and loadedplaylist won't fire again, so the playlist handler must be
+          // called on its own here.
+
+          const haveJsonSource = this.sourceType_ === 'vhs-json' && this.initialMedia_.segments;
+          if (!haveJsonSource) {
+            return;
+          }
+          updatedPlaylist = this.initialMedia_;
+        }
+        this.handleUpdatedMediaPlaylist(updatedPlaylist);
+      });
+      this.mainPlaylistLoader_.on('error', () => {
+        const error = this.mainPlaylistLoader_.error;
+        this.excludePlaylist({
+          playlistToExclude: error.playlist,
+          error
+        });
+      });
+      this.mainPlaylistLoader_.on('mediachanging', () => {
+        this.mainSegmentLoader_.abort();
+        this.mainSegmentLoader_.pause();
+      });
+      this.mainPlaylistLoader_.on('mediachange', () => {
+        const media = this.mainPlaylistLoader_.media();
+        const requestTimeout = media.targetDuration * 1.5 * 1000; // If we don't have any more available playlists, we don't want to
+        // timeout the request.
+
+        if (isLowestEnabledRendition(this.mainPlaylistLoader_.main, this.mainPlaylistLoader_.media())) {
+          this.requestOptions_.timeout = 0;
+        } else {
+          this.requestOptions_.timeout = requestTimeout;
+        }
+        if (this.sourceType_ === 'dash') {
+          // we don't want to re-request the same hls playlist right after it was changed
+          this.mainPlaylistLoader_.load();
+        } // TODO: Create a new event on the PlaylistLoader that signals
+        // that the segments have changed in some way and use that to
+        // update the SegmentLoader instead of doing it twice here and
+        // on `loadedplaylist`
+
+        this.mainSegmentLoader_.pause();
+        this.mainSegmentLoader_.playlist(media, this.requestOptions_);
+        if (this.waitingForFastQualityPlaylistReceived_) {
+          this.runFastQualitySwitch_();
+        } else {
+          this.mainSegmentLoader_.load();
+        }
+        this.tech_.trigger({
+          type: 'mediachange',
+          bubbles: true
+        });
+      });
+      this.mainPlaylistLoader_.on('playlistunchanged', () => {
+        const updatedPlaylist = this.mainPlaylistLoader_.media(); // ignore unchanged playlists that have already been
+        // excluded for not-changing. We likely just have a really slowly updating
+        // playlist.
+
+        if (updatedPlaylist.lastExcludeReason_ === 'playlist-unchanged') {
+          return;
+        }
+        const playlistOutdated = this.stuckAtPlaylistEnd_(updatedPlaylist);
+        if (playlistOutdated) {
+          // Playlist has stopped updating and we're stuck at its end. Try to
+          // exclude it and switch to another playlist in the hope that that
+          // one is updating (and give the player a chance to re-adjust to the
+          // safe live point).
+          this.excludePlaylist({
+            error: {
+              message: 'Playlist no longer updating.',
+              reason: 'playlist-unchanged'
+            }
+          }); // useful for monitoring QoS
+
+          this.tech_.trigger('playliststuck');
+        }
+      });
+      this.mainPlaylistLoader_.on('renditiondisabled', () => {
+        this.tech_.trigger({
+          type: 'usage',
+          name: 'vhs-rendition-disabled'
+        });
+      });
+      this.mainPlaylistLoader_.on('renditionenabled', () => {
+        this.tech_.trigger({
+          type: 'usage',
+          name: 'vhs-rendition-enabled'
+        });
+      });
+    }
+    /**
+     * Given an updated media playlist (whether it was loaded for the first time, or
+     * refreshed for live playlists), update any relevant properties and state to reflect
+     * changes in the media that should be accounted for (e.g., cues and duration).
+     *
+     * @param {Object} updatedPlaylist the updated media playlist object
+     *
+     * @private
+     */
+
+    handleUpdatedMediaPlaylist(updatedPlaylist) {
+      if (this.useCueTags_) {
+        this.updateAdCues_(updatedPlaylist);
+      } // TODO: Create a new event on the PlaylistLoader that signals
+      // that the segments have changed in some way and use that to
+      // update the SegmentLoader instead of doing it twice here and
+      // on `mediachange`
+
+      this.mainSegmentLoader_.pause();
+      this.mainSegmentLoader_.playlist(updatedPlaylist, this.requestOptions_);
+      if (this.waitingForFastQualityPlaylistReceived_) {
+        this.runFastQualitySwitch_();
+      }
+      this.updateDuration(!updatedPlaylist.endList); // If the player isn't paused, ensure that the segment loader is running,
+      // as it is possible that it was temporarily stopped while waiting for
+      // a playlist (e.g., in case the playlist errored and we re-requested it).
+
+      if (!this.tech_.paused()) {
+        this.mainSegmentLoader_.load();
+        if (this.audioSegmentLoader_) {
+          this.audioSegmentLoader_.load();
+        }
+      }
+    }
+    /**
+     * A helper function for triggerring presence usage events once per source
+     *
+     * @private
+     */
+
+    triggerPresenceUsage_(main, media) {
+      const mediaGroups = main.mediaGroups || {};
+      let defaultDemuxed = true;
+      const audioGroupKeys = Object.keys(mediaGroups.AUDIO);
+      for (const mediaGroup in mediaGroups.AUDIO) {
+        for (const label in mediaGroups.AUDIO[mediaGroup]) {
+          const properties = mediaGroups.AUDIO[mediaGroup][label];
+          if (!properties.uri) {
+            defaultDemuxed = false;
+          }
+        }
+      }
+      if (defaultDemuxed) {
+        this.tech_.trigger({
+          type: 'usage',
+          name: 'vhs-demuxed'
+        });
+      }
+      if (Object.keys(mediaGroups.SUBTITLES).length) {
+        this.tech_.trigger({
+          type: 'usage',
+          name: 'vhs-webvtt'
+        });
+      }
+      if (Vhs$1.Playlist.isAes(media)) {
+        this.tech_.trigger({
+          type: 'usage',
+          name: 'vhs-aes'
+        });
+      }
+      if (audioGroupKeys.length && Object.keys(mediaGroups.AUDIO[audioGroupKeys[0]]).length > 1) {
+        this.tech_.trigger({
+          type: 'usage',
+          name: 'vhs-alternate-audio'
+        });
+      }
+      if (this.useCueTags_) {
+        this.tech_.trigger({
+          type: 'usage',
+          name: 'vhs-playlist-cue-tags'
+        });
+      }
+    }
+    shouldSwitchToMedia_(nextPlaylist) {
+      const currentPlaylist = this.mainPlaylistLoader_.media() || this.mainPlaylistLoader_.pendingMedia_;
+      const currentTime = this.tech_.currentTime();
+      const bufferLowWaterLine = this.bufferLowWaterLine();
+      const bufferHighWaterLine = this.bufferHighWaterLine();
+      const buffered = this.tech_.buffered();
+      return shouldSwitchToMedia({
+        buffered,
+        currentTime,
+        currentPlaylist,
+        nextPlaylist,
+        bufferLowWaterLine,
+        bufferHighWaterLine,
+        duration: this.duration(),
+        bufferBasedABR: this.bufferBasedABR,
+        log: this.logger_
+      });
+    }
+    /**
+     * Register event handlers on the segment loaders. A helper function
+     * for construction time.
+     *
+     * @private
+     */
+
+    setupSegmentLoaderListeners_() {
+      this.mainSegmentLoader_.on('bandwidthupdate', () => {
+        // Whether or not buffer based ABR or another ABR is used, on a bandwidth change it's
+        // useful to check to see if a rendition switch should be made.
+        this.checkABR_('bandwidthupdate');
+        this.tech_.trigger('bandwidthupdate');
+      });
+      this.mainSegmentLoader_.on('timeout', () => {
+        if (this.bufferBasedABR) {
+          // If a rendition change is needed, then it would've be done on `bandwidthupdate`.
+          // Here the only consideration is that for buffer based ABR there's no guarantee
+          // of an immediate switch (since the bandwidth is averaged with a timeout
+          // bandwidth value of 1), so force a load on the segment loader to keep it going.
+          this.mainSegmentLoader_.load();
+        }
+      }); // `progress` events are not reliable enough of a bandwidth measure to trigger buffer
+      // based ABR.
+
+      if (!this.bufferBasedABR) {
+        this.mainSegmentLoader_.on('progress', () => {
+          this.trigger('progress');
+        });
+      }
+      this.mainSegmentLoader_.on('error', () => {
+        const error = this.mainSegmentLoader_.error();
+        this.excludePlaylist({
+          playlistToExclude: error.playlist,
+          error
+        });
+      });
+      this.mainSegmentLoader_.on('appenderror', () => {
+        this.error = this.mainSegmentLoader_.error_;
+        this.trigger('error');
+      });
+      this.mainSegmentLoader_.on('syncinfoupdate', () => {
+        this.onSyncInfoUpdate_();
+      });
+      this.mainSegmentLoader_.on('timestampoffset', () => {
+        this.tech_.trigger({
+          type: 'usage',
+          name: 'vhs-timestamp-offset'
+        });
+      });
+      this.audioSegmentLoader_.on('syncinfoupdate', () => {
+        this.onSyncInfoUpdate_();
+      });
+      this.audioSegmentLoader_.on('appenderror', () => {
+        this.error = this.audioSegmentLoader_.error_;
+        this.trigger('error');
+      });
+      this.mainSegmentLoader_.on('ended', () => {
+        this.logger_('main segment loader ended');
+        this.onEndOfStream();
+      });
+      this.mainSegmentLoader_.on('earlyabort', event => {
+        // never try to early abort with the new ABR algorithm
+        if (this.bufferBasedABR) {
+          return;
+        }
+        this.delegateLoaders_('all', ['abort']);
+        this.excludePlaylist({
+          error: {
+            message: 'Aborted early because there isn\'t enough bandwidth to complete ' + 'the request without rebuffering.'
+          },
+          playlistExclusionDuration: ABORT_EARLY_EXCLUSION_SECONDS
+        });
+      });
+      const updateCodecs = () => {
+        if (!this.sourceUpdater_.hasCreatedSourceBuffers()) {
+          return this.tryToCreateSourceBuffers_();
+        }
+        const codecs = this.getCodecsOrExclude_(); // no codecs means that the playlist was excluded
+
+        if (!codecs) {
+          return;
+        }
+        this.sourceUpdater_.addOrChangeSourceBuffers(codecs);
+      };
+      this.mainSegmentLoader_.on('trackinfo', updateCodecs);
+      this.audioSegmentLoader_.on('trackinfo', updateCodecs);
+      this.mainSegmentLoader_.on('fmp4', () => {
+        if (!this.triggeredFmp4Usage) {
+          this.tech_.trigger({
+            type: 'usage',
+            name: 'vhs-fmp4'
+          });
+          this.triggeredFmp4Usage = true;
+        }
+      });
+      this.audioSegmentLoader_.on('fmp4', () => {
+        if (!this.triggeredFmp4Usage) {
+          this.tech_.trigger({
+            type: 'usage',
+            name: 'vhs-fmp4'
+          });
+          this.triggeredFmp4Usage = true;
+        }
+      });
+      this.audioSegmentLoader_.on('ended', () => {
+        this.logger_('audioSegmentLoader ended');
+        this.onEndOfStream();
+      });
+    }
+    mediaSecondsLoaded_() {
+      return Math.max(this.audioSegmentLoader_.mediaSecondsLoaded + this.mainSegmentLoader_.mediaSecondsLoaded);
+    }
+    /**
+     * Call load on our SegmentLoaders
+     */
+
+    load() {
+      this.mainSegmentLoader_.load();
+      if (this.mediaTypes_.AUDIO.activePlaylistLoader) {
+        this.audioSegmentLoader_.load();
+      }
+      if (this.mediaTypes_.SUBTITLES.activePlaylistLoader) {
+        this.subtitleSegmentLoader_.load();
+      }
+    }
+    /**
+     * Re-tune playback quality level for the current player
+     * conditions. This method will perform destructive actions like removing
+     * already buffered content in order to readjust the currently active
+     * playlist quickly. This is good for manual quality changes
+     *
+     * @private
+     */
+
+    fastQualityChange_(media = this.selectPlaylist()) {
+      if (media && media === this.mainPlaylistLoader_.media()) {
+        this.logger_('skipping fastQualityChange because new media is same as old');
+        return;
+      }
+      this.switchMedia_(media, 'fast-quality'); // we would like to avoid race condition when we call fastQuality,
+      // reset everything and start loading segments from prev segments instead of new because new playlist is not received yet
+
+      this.waitingForFastQualityPlaylistReceived_ = true;
+    }
+    runFastQualitySwitch_() {
+      this.waitingForFastQualityPlaylistReceived_ = false; // Delete all buffered data to allow an immediate quality switch, then seek to give
+      // the browser a kick to remove any cached frames from the previous rendtion (.04 seconds
+      // ahead was roughly the minimum that will accomplish this across a variety of content
+      // in IE and Edge, but seeking in place is sufficient on all other browsers)
+      // Edge/IE bug: https://developer.microsoft.com/en-us/microsoft-edge/platform/issues/14600375/
+      // Chrome bug: https://bugs.chromium.org/p/chromium/issues/detail?id=651904
+
+      this.mainSegmentLoader_.pause();
+      this.mainSegmentLoader_.resetEverything(() => {
+        this.tech_.setCurrentTime(this.tech_.currentTime());
+      }); // don't need to reset audio as it is reset when media changes
+    }
+    /**
+     * Begin playback.
+     */
+
+    play() {
+      if (this.setupFirstPlay()) {
+        return;
+      }
+      if (this.tech_.ended()) {
+        this.tech_.setCurrentTime(0);
+      }
+      if (this.hasPlayed_) {
+        this.load();
+      }
+      const seekable = this.tech_.seekable(); // if the viewer has paused and we fell out of the live window,
+      // seek forward to the live point
+
+      if (this.tech_.duration() === Infinity) {
+        if (this.tech_.currentTime() < seekable.start(0)) {
+          return this.tech_.setCurrentTime(seekable.end(seekable.length - 1));
+        }
+      }
+    }
+    /**
+     * Seek to the latest media position if this is a live video and the
+     * player and video are loaded and initialized.
+     */
+
+    setupFirstPlay() {
+      const media = this.mainPlaylistLoader_.media(); // Check that everything is ready to begin buffering for the first call to play
+      //  If 1) there is no active media
+      //     2) the player is paused
+      //     3) the first play has already been setup
+      // then exit early
+
+      if (!media || this.tech_.paused() || this.hasPlayed_) {
+        return false;
+      } // when the video is a live stream and/or has a start time
+
+      if (!media.endList || media.start) {
+        const seekable = this.seekable();
+        if (!seekable.length) {
+          // without a seekable range, the player cannot seek to begin buffering at the
+          // live or start point
+          return false;
+        }
+        const seekableEnd = seekable.end(0);
+        let startPoint = seekableEnd;
+        if (media.start) {
+          const offset = media.start.timeOffset;
+          if (offset < 0) {
+            startPoint = Math.max(seekableEnd + offset, seekable.start(0));
+          } else {
+            startPoint = Math.min(seekableEnd, offset);
+          }
+        } // trigger firstplay to inform the source handler to ignore the next seek event
+
+        this.trigger('firstplay'); // seek to the live point
+
+        this.tech_.setCurrentTime(startPoint);
+      }
+      this.hasPlayed_ = true; // we can begin loading now that everything is ready
+
+      this.load();
+      return true;
+    }
+    /**
+     * handle the sourceopen event on the MediaSource
+     *
+     * @private
+     */
+
+    handleSourceOpen_() {
+      // Only attempt to create the source buffer if none already exist.
+      // handleSourceOpen is also called when we are "re-opening" a source buffer
+      // after `endOfStream` has been called (in response to a seek for instance)
+      this.tryToCreateSourceBuffers_(); // if autoplay is enabled, begin playback. This is duplicative of
+      // code in video.js but is required because play() must be invoked
+      // *after* the media source has opened.
+
+      if (this.tech_.autoplay()) {
+        const playPromise = this.tech_.play(); // Catch/silence error when a pause interrupts a play request
+        // on browsers which return a promise
+
+        if (typeof playPromise !== 'undefined' && typeof playPromise.then === 'function') {
+          playPromise.then(null, e => {});
+        }
+      }
+      this.trigger('sourceopen');
+    }
+    /**
+     * handle the sourceended event on the MediaSource
+     *
+     * @private
+     */
+
+    handleSourceEnded_() {
+      if (!this.inbandTextTracks_.metadataTrack_) {
+        return;
+      }
+      const cues = this.inbandTextTracks_.metadataTrack_.cues;
+      if (!cues || !cues.length) {
+        return;
+      }
+      const duration = this.duration();
+      cues[cues.length - 1].endTime = isNaN(duration) || Math.abs(duration) === Infinity ? Number.MAX_VALUE : duration;
+    }
+    /**
+     * handle the durationchange event on the MediaSource
+     *
+     * @private
+     */
+
+    handleDurationChange_() {
+      this.tech_.trigger('durationchange');
+    }
+    /**
+     * Calls endOfStream on the media source when all active stream types have called
+     * endOfStream
+     *
+     * @param {string} streamType
+     *        Stream type of the segment loader that called endOfStream
+     * @private
+     */
+
+    onEndOfStream() {
+      let isEndOfStream = this.mainSegmentLoader_.ended_;
+      if (this.mediaTypes_.AUDIO.activePlaylistLoader) {
+        const mainMediaInfo = this.mainSegmentLoader_.getCurrentMediaInfo_(); // if the audio playlist loader exists, then alternate audio is active
+
+        if (!mainMediaInfo || mainMediaInfo.hasVideo) {
+          // if we do not know if the main segment loader contains video yet or if we
+          // definitively know the main segment loader contains video, then we need to wait
+          // for both main and audio segment loaders to call endOfStream
+          isEndOfStream = isEndOfStream && this.audioSegmentLoader_.ended_;
+        } else {
+          // otherwise just rely on the audio loader
+          isEndOfStream = this.audioSegmentLoader_.ended_;
+        }
+      }
+      if (!isEndOfStream) {
+        return;
+      }
+      this.stopABRTimer_();
+      this.sourceUpdater_.endOfStream();
+    }
+    /**
+     * Check if a playlist has stopped being updated
+     *
+     * @param {Object} playlist the media playlist object
+     * @return {boolean} whether the playlist has stopped being updated or not
+     */
+
+    stuckAtPlaylistEnd_(playlist) {
+      const seekable = this.seekable();
+      if (!seekable.length) {
+        // playlist doesn't have enough information to determine whether we are stuck
+        return false;
+      }
+      const expired = this.syncController_.getExpiredTime(playlist, this.duration());
+      if (expired === null) {
+        return false;
+      } // does not use the safe live end to calculate playlist end, since we
+      // don't want to say we are stuck while there is still content
+
+      const absolutePlaylistEnd = Vhs$1.Playlist.playlistEnd(playlist, expired);
+      const currentTime = this.tech_.currentTime();
+      const buffered = this.tech_.buffered();
+      if (!buffered.length) {
+        // return true if the playhead reached the absolute end of the playlist
+        return absolutePlaylistEnd - currentTime <= SAFE_TIME_DELTA;
+      }
+      const bufferedEnd = buffered.end(buffered.length - 1); // return true if there is too little buffer left and buffer has reached absolute
+      // end of playlist
+
+      return bufferedEnd - currentTime <= SAFE_TIME_DELTA && absolutePlaylistEnd - bufferedEnd <= SAFE_TIME_DELTA;
+    }
+    /**
+     * Exclude a playlist for a set amount of time, making it unavailable for selection by
+     * the rendition selection algorithm, then force a new playlist (rendition) selection.
+     *
+     * @param {Object=} playlistToExclude
+     *                  the playlist to exclude, defaults to the currently selected playlist
+     * @param {Object=} error
+     *                  an optional error
+     * @param {number=} playlistExclusionDuration
+     *                  an optional number of seconds to exclude the playlist
+     */
+
+    excludePlaylist({
+      playlistToExclude = this.mainPlaylistLoader_.media(),
+      error = {},
+      playlistExclusionDuration
+    }) {
+      // If the `error` was generated by the playlist loader, it will contain
+      // the playlist we were trying to load (but failed) and that should be
+      // excluded instead of the currently selected playlist which is likely
+      // out-of-date in this scenario
+      playlistToExclude = playlistToExclude || this.mainPlaylistLoader_.media();
+      playlistExclusionDuration = playlistExclusionDuration || error.playlistExclusionDuration || this.playlistExclusionDuration; // If there is no current playlist, then an error occurred while we were
+      // trying to load the main OR while we were disposing of the tech
+
+      if (!playlistToExclude) {
+        this.error = error;
+        if (this.mediaSource.readyState !== 'open') {
+          this.trigger('error');
+        } else {
+          this.sourceUpdater_.endOfStream('network');
+        }
+        return;
+      }
+      playlistToExclude.playlistErrors_++;
+      const playlists = this.mainPlaylistLoader_.main.playlists;
+      const enabledPlaylists = playlists.filter(isEnabled);
+      const isFinalRendition = enabledPlaylists.length === 1 && enabledPlaylists[0] === playlistToExclude; // Don't exclude the only playlist unless it was excluded
+      // forever
+
+      if (playlists.length === 1 && playlistExclusionDuration !== Infinity) {
+        videojs.log.warn(`Problem encountered with playlist ${playlistToExclude.id}. ` + 'Trying again since it is the only playlist.');
+        this.tech_.trigger('retryplaylist'); // if this is a final rendition, we should delay
+
+        return this.mainPlaylistLoader_.load(isFinalRendition);
+      }
+      if (isFinalRendition) {
+        // If we're content steering, try other pathways.
+        if (this.main().contentSteering) {
+          const pathway = this.pathwayAttribute_(playlistToExclude); // Ignore at least 1 steering manifest refresh.
+
+          const reIncludeDelay = this.contentSteeringController_.steeringManifest.ttl * 1000;
+          this.contentSteeringController_.excludePathway(pathway);
+          this.excludeThenChangePathway_();
+          setTimeout(() => {
+            this.contentSteeringController_.addAvailablePathway(pathway);
+          }, reIncludeDelay);
+          return;
+        } // Since we're on the final non-excluded playlist, and we're about to exclude
+        // it, instead of erring the player or retrying this playlist, clear out the current
+        // exclusion list. This allows other playlists to be attempted in case any have been
+        // fixed.
+
+        let reincluded = false;
+        playlists.forEach(playlist => {
+          // skip current playlist which is about to be excluded
+          if (playlist === playlistToExclude) {
+            return;
+          }
+          const excludeUntil = playlist.excludeUntil; // a playlist cannot be reincluded if it wasn't excluded to begin with.
+
+          if (typeof excludeUntil !== 'undefined' && excludeUntil !== Infinity) {
+            reincluded = true;
+            delete playlist.excludeUntil;
+          }
+        });
+        if (reincluded) {
+          videojs.log.warn('Removing other playlists from the exclusion list because the last ' + 'rendition is about to be excluded.'); // Technically we are retrying a playlist, in that we are simply retrying a previous
+          // playlist. This is needed for users relying on the retryplaylist event to catch a
+          // case where the player might be stuck and looping through "dead" playlists.
+
+          this.tech_.trigger('retryplaylist');
+        }
+      } // Exclude this playlist
+
+      let excludeUntil;
+      if (playlistToExclude.playlistErrors_ > this.maxPlaylistRetries) {
+        excludeUntil = Infinity;
+      } else {
+        excludeUntil = Date.now() + playlistExclusionDuration * 1000;
+      }
+      playlistToExclude.excludeUntil = excludeUntil;
+      if (error.reason) {
+        playlistToExclude.lastExcludeReason_ = error.reason;
+      }
+      this.tech_.trigger('excludeplaylist');
+      this.tech_.trigger({
+        type: 'usage',
+        name: 'vhs-rendition-excluded'
+      }); // TODO: only load a new playlist if we're excluding the current playlist
+      // If this function was called with a playlist that's not the current active playlist
+      // (e.g., media().id !== playlistToExclude.id),
+      // then a new playlist should not be selected and loaded, as there's nothing wrong with the current playlist.
+
+      const nextPlaylist = this.selectPlaylist();
+      if (!nextPlaylist) {
+        this.error = 'Playback cannot continue. No available working or supported playlists.';
+        this.trigger('error');
+        return;
+      }
+      const logFn = error.internal ? this.logger_ : videojs.log.warn;
+      const errorMessage = error.message ? ' ' + error.message : '';
+      logFn(`${error.internal ? 'Internal problem' : 'Problem'} encountered with playlist ${playlistToExclude.id}.` + `${errorMessage} Switching to playlist ${nextPlaylist.id}.`); // if audio group changed reset audio loaders
+
+      if (nextPlaylist.attributes.AUDIO !== playlistToExclude.attributes.AUDIO) {
+        this.delegateLoaders_('audio', ['abort', 'pause']);
+      } // if subtitle group changed reset subtitle loaders
+
+      if (nextPlaylist.attributes.SUBTITLES !== playlistToExclude.attributes.SUBTITLES) {
+        this.delegateLoaders_('subtitle', ['abort', 'pause']);
+      }
+      this.delegateLoaders_('main', ['abort', 'pause']);
+      const delayDuration = nextPlaylist.targetDuration / 2 * 1000 || 5 * 1000;
+      const shouldDelay = typeof nextPlaylist.lastRequest === 'number' && Date.now() - nextPlaylist.lastRequest <= delayDuration; // delay if it's a final rendition or if the last refresh is sooner than half targetDuration
+
+      return this.switchMedia_(nextPlaylist, 'exclude', isFinalRendition || shouldDelay);
+    }
+    /**
+     * Pause all segment/playlist loaders
+     */
+
+    pauseLoading() {
+      this.delegateLoaders_('all', ['abort', 'pause']);
+      this.stopABRTimer_();
+    }
+    /**
+     * Call a set of functions in order on playlist loaders, segment loaders,
+     * or both types of loaders.
+     *
+     * @param {string} filter
+     *        Filter loaders that should call fnNames using a string. Can be:
+     *        * all - run on all loaders
+     *        * audio - run on all audio loaders
+     *        * subtitle - run on all subtitle loaders
+     *        * main - run on the main loaders
+     *
+     * @param {Array|string} fnNames
+     *        A string or array of function names to call.
+     */
+
+    delegateLoaders_(filter, fnNames) {
+      const loaders = [];
+      const dontFilterPlaylist = filter === 'all';
+      if (dontFilterPlaylist || filter === 'main') {
+        loaders.push(this.mainPlaylistLoader_);
+      }
+      const mediaTypes = [];
+      if (dontFilterPlaylist || filter === 'audio') {
+        mediaTypes.push('AUDIO');
+      }
+      if (dontFilterPlaylist || filter === 'subtitle') {
+        mediaTypes.push('CLOSED-CAPTIONS');
+        mediaTypes.push('SUBTITLES');
+      }
+      mediaTypes.forEach(mediaType => {
+        const loader = this.mediaTypes_[mediaType] && this.mediaTypes_[mediaType].activePlaylistLoader;
+        if (loader) {
+          loaders.push(loader);
+        }
+      });
+      ['main', 'audio', 'subtitle'].forEach(name => {
+        const loader = this[`${name}SegmentLoader_`];
+        if (loader && (filter === name || filter === 'all')) {
+          loaders.push(loader);
+        }
+      });
+      loaders.forEach(loader => fnNames.forEach(fnName => {
+        if (typeof loader[fnName] === 'function') {
+          loader[fnName]();
+        }
+      }));
+    }
+    /**
+     * set the current time on all segment loaders
+     *
+     * @param {TimeRange} currentTime the current time to set
+     * @return {TimeRange} the current time
+     */
+
+    setCurrentTime(currentTime) {
+      const buffered = findRange(this.tech_.buffered(), currentTime);
+      if (!(this.mainPlaylistLoader_ && this.mainPlaylistLoader_.media())) {
+        // return immediately if the metadata is not ready yet
+        return 0;
+      } // it's clearly an edge-case but don't thrown an error if asked to
+      // seek within an empty playlist
+
+      if (!this.mainPlaylistLoader_.media().segments) {
+        return 0;
+      } // if the seek location is already buffered, continue buffering as usual
+
+      if (buffered && buffered.length) {
+        return currentTime;
+      } // cancel outstanding requests so we begin buffering at the new
+      // location
+
+      this.mainSegmentLoader_.pause();
+      this.mainSegmentLoader_.resetEverything();
+      if (this.mediaTypes_.AUDIO.activePlaylistLoader) {
+        this.audioSegmentLoader_.pause();
+        this.audioSegmentLoader_.resetEverything();
+      }
+      if (this.mediaTypes_.SUBTITLES.activePlaylistLoader) {
+        this.subtitleSegmentLoader_.pause();
+        this.subtitleSegmentLoader_.resetEverything();
+      } // start segment loader loading in case they are paused
+
+      this.load();
+    }
+    /**
+     * get the current duration
+     *
+     * @return {TimeRange} the duration
+     */
+
+    duration() {
+      if (!this.mainPlaylistLoader_) {
+        return 0;
+      }
+      const media = this.mainPlaylistLoader_.media();
+      if (!media) {
+        // no playlists loaded yet, so can't determine a duration
+        return 0;
+      } // Don't rely on the media source for duration in the case of a live playlist since
+      // setting the native MediaSource's duration to infinity ends up with consequences to
+      // seekable behavior. See https://github.com/w3c/media-source/issues/5 for details.
+      //
+      // This is resolved in the spec by https://github.com/w3c/media-source/pull/92,
+      // however, few browsers have support for setLiveSeekableRange()
+      // https://developer.mozilla.org/en-US/docs/Web/API/MediaSource/setLiveSeekableRange
+      //
+      // Until a time when the duration of the media source can be set to infinity, and a
+      // seekable range specified across browsers, just return Infinity.
+
+      if (!media.endList) {
+        return Infinity;
+      } // Since this is a VOD video, it is safe to rely on the media source's duration (if
+      // available). If it's not available, fall back to a playlist-calculated estimate.
+
+      if (this.mediaSource) {
+        return this.mediaSource.duration;
+      }
+      return Vhs$1.Playlist.duration(media);
+    }
+    /**
+     * check the seekable range
+     *
+     * @return {TimeRange} the seekable range
+     */
+
+    seekable() {
+      return this.seekable_;
+    }
+    onSyncInfoUpdate_() {
+      let audioSeekable; // TODO check for creation of both source buffers before updating seekable
+      //
+      // A fix was made to this function where a check for
+      // this.sourceUpdater_.hasCreatedSourceBuffers
+      // was added to ensure that both source buffers were created before seekable was
+      // updated. However, it originally had a bug where it was checking for a true and
+      // returning early instead of checking for false. Setting it to check for false to
+      // return early though created other issues. A call to play() would check for seekable
+      // end without verifying that a seekable range was present. In addition, even checking
+      // for that didn't solve some issues, as handleFirstPlay is sometimes worked around
+      // due to a media update calling load on the segment loaders, skipping a seek to live,
+      // thereby starting live streams at the beginning of the stream rather than at the end.
+      //
+      // This conditional should be fixed to wait for the creation of two source buffers at
+      // the same time as the other sections of code are fixed to properly seek to live and
+      // not throw an error due to checking for a seekable end when no seekable range exists.
+      //
+      // For now, fall back to the older behavior, with the understanding that the seekable
+      // range may not be completely correct, leading to a suboptimal initial live point.
+
+      if (!this.mainPlaylistLoader_) {
+        return;
+      }
+      let media = this.mainPlaylistLoader_.media();
+      if (!media) {
+        return;
+      }
+      let expired = this.syncController_.getExpiredTime(media, this.duration());
+      if (expired === null) {
+        // not enough information to update seekable
+        return;
+      }
+      const main = this.mainPlaylistLoader_.main;
+      const mainSeekable = Vhs$1.Playlist.seekable(media, expired, Vhs$1.Playlist.liveEdgeDelay(main, media));
+      if (mainSeekable.length === 0) {
+        return;
+      }
+      if (this.mediaTypes_.AUDIO.activePlaylistLoader) {
+        media = this.mediaTypes_.AUDIO.activePlaylistLoader.media();
+        expired = this.syncController_.getExpiredTime(media, this.duration());
+        if (expired === null) {
+          return;
+        }
+        audioSeekable = Vhs$1.Playlist.seekable(media, expired, Vhs$1.Playlist.liveEdgeDelay(main, media));
+        if (audioSeekable.length === 0) {
+          return;
+        }
+      }
+      let oldEnd;
+      let oldStart;
+      if (this.seekable_ && this.seekable_.length) {
+        oldEnd = this.seekable_.end(0);
+        oldStart = this.seekable_.start(0);
+      }
+      if (!audioSeekable) {
+        // seekable has been calculated based on buffering video data so it
+        // can be returned directly
+        this.seekable_ = mainSeekable;
+      } else if (audioSeekable.start(0) > mainSeekable.end(0) || mainSeekable.start(0) > audioSeekable.end(0)) {
+        // seekables are pretty far off, rely on main
+        this.seekable_ = mainSeekable;
+      } else {
+        this.seekable_ = createTimeRanges([[audioSeekable.start(0) > mainSeekable.start(0) ? audioSeekable.start(0) : mainSeekable.start(0), audioSeekable.end(0) < mainSeekable.end(0) ? audioSeekable.end(0) : mainSeekable.end(0)]]);
+      } // seekable is the same as last time
+
+      if (this.seekable_ && this.seekable_.length) {
+        if (this.seekable_.end(0) === oldEnd && this.seekable_.start(0) === oldStart) {
+          return;
+        }
+      }
+      this.logger_(`seekable updated [${printableRange(this.seekable_)}]`);
+      this.tech_.trigger('seekablechanged');
+    }
+    /**
+     * Update the player duration
+     */
+
+    updateDuration(isLive) {
+      if (this.updateDuration_) {
+        this.mediaSource.removeEventListener('sourceopen', this.updateDuration_);
+        this.updateDuration_ = null;
+      }
+      if (this.mediaSource.readyState !== 'open') {
+        this.updateDuration_ = this.updateDuration.bind(this, isLive);
+        this.mediaSource.addEventListener('sourceopen', this.updateDuration_);
+        return;
+      }
+      if (isLive) {
+        const seekable = this.seekable();
+        if (!seekable.length) {
+          return;
+        } // Even in the case of a live playlist, the native MediaSource's duration should not
+        // be set to Infinity (even though this would be expected for a live playlist), since
+        // setting the native MediaSource's duration to infinity ends up with consequences to
+        // seekable behavior. See https://github.com/w3c/media-source/issues/5 for details.
+        //
+        // This is resolved in the spec by https://github.com/w3c/media-source/pull/92,
+        // however, few browsers have support for setLiveSeekableRange()
+        // https://developer.mozilla.org/en-US/docs/Web/API/MediaSource/setLiveSeekableRange
+        //
+        // Until a time when the duration of the media source can be set to infinity, and a
+        // seekable range specified across browsers, the duration should be greater than or
+        // equal to the last possible seekable value.
+        // MediaSource duration starts as NaN
+        // It is possible (and probable) that this case will never be reached for many
+        // sources, since the MediaSource reports duration as the highest value without
+        // accounting for timestamp offset. For example, if the timestamp offset is -100 and
+        // we buffered times 0 to 100 with real times of 100 to 200, even though current
+        // time will be between 0 and 100, the native media source may report the duration
+        // as 200. However, since we report duration separate from the media source (as
+        // Infinity), and as long as the native media source duration value is greater than
+        // our reported seekable range, seeks will work as expected. The large number as
+        // duration for live is actually a strategy used by some players to work around the
+        // issue of live seekable ranges cited above.
+
+        if (isNaN(this.mediaSource.duration) || this.mediaSource.duration < seekable.end(seekable.length - 1)) {
+          this.sourceUpdater_.setDuration(seekable.end(seekable.length - 1));
+        }
+        return;
+      }
+      const buffered = this.tech_.buffered();
+      let duration = Vhs$1.Playlist.duration(this.mainPlaylistLoader_.media());
+      if (buffered.length > 0) {
+        duration = Math.max(duration, buffered.end(buffered.length - 1));
+      }
+      if (this.mediaSource.duration !== duration) {
+        this.sourceUpdater_.setDuration(duration);
+      }
+    }
+    /**
+     * dispose of the PlaylistController and everything
+     * that it controls
+     */
+
+    dispose() {
+      this.trigger('dispose');
+      this.decrypter_.terminate();
+      this.mainPlaylistLoader_.dispose();
+      this.mainSegmentLoader_.dispose();
+      this.contentSteeringController_.dispose();
+      this.keyStatusMap_.clear();
+      if (this.loadOnPlay_) {
+        this.tech_.off('play', this.loadOnPlay_);
+      }
+      ['AUDIO', 'SUBTITLES'].forEach(type => {
+        const groups = this.mediaTypes_[type].groups;
+        for (const id in groups) {
+          groups[id].forEach(group => {
+            if (group.playlistLoader) {
+              group.playlistLoader.dispose();
+            }
+          });
+        }
+      });
+      this.audioSegmentLoader_.dispose();
+      this.subtitleSegmentLoader_.dispose();
+      this.sourceUpdater_.dispose();
+      this.timelineChangeController_.dispose();
+      this.stopABRTimer_();
+      if (this.updateDuration_) {
+        this.mediaSource.removeEventListener('sourceopen', this.updateDuration_);
+      }
+      this.mediaSource.removeEventListener('durationchange', this.handleDurationChange_); // load the media source into the player
+
+      this.mediaSource.removeEventListener('sourceopen', this.handleSourceOpen_);
+      this.mediaSource.removeEventListener('sourceended', this.handleSourceEnded_);
+      this.off();
+    }
+    /**
+     * return the main playlist object if we have one
+     *
+     * @return {Object} the main playlist object that we parsed
+     */
+
+    main() {
+      return this.mainPlaylistLoader_.main;
+    }
+    /**
+     * return the currently selected playlist
+     *
+     * @return {Object} the currently selected playlist object that we parsed
+     */
+
+    media() {
+      // playlist loader will not return media if it has not been fully loaded
+      return this.mainPlaylistLoader_.media() || this.initialMedia_;
+    }
+    areMediaTypesKnown_() {
+      const usingAudioLoader = !!this.mediaTypes_.AUDIO.activePlaylistLoader;
+      const hasMainMediaInfo = !!this.mainSegmentLoader_.getCurrentMediaInfo_(); // if we are not using an audio loader, then we have audio media info
+      // otherwise check on the segment loader.
+
+      const hasAudioMediaInfo = !usingAudioLoader ? true : !!this.audioSegmentLoader_.getCurrentMediaInfo_(); // one or both loaders has not loaded sufficently to get codecs
+
+      if (!hasMainMediaInfo || !hasAudioMediaInfo) {
+        return false;
+      }
+      return true;
+    }
+    getCodecsOrExclude_() {
+      const media = {
+        main: this.mainSegmentLoader_.getCurrentMediaInfo_() || {},
+        audio: this.audioSegmentLoader_.getCurrentMediaInfo_() || {}
+      };
+      const playlist = this.mainSegmentLoader_.getPendingSegmentPlaylist() || this.media(); // set "main" media equal to video
+
+      media.video = media.main;
+      const playlistCodecs = codecsForPlaylist(this.main(), playlist);
+      const codecs = {};
+      const usingAudioLoader = !!this.mediaTypes_.AUDIO.activePlaylistLoader;
+      if (media.main.hasVideo) {
+        codecs.video = playlistCodecs.video || media.main.videoCodec || DEFAULT_VIDEO_CODEC;
+      }
+      if (media.main.isMuxed) {
+        codecs.video += `,${playlistCodecs.audio || media.main.audioCodec || DEFAULT_AUDIO_CODEC}`;
+      }
+      if (media.main.hasAudio && !media.main.isMuxed || media.audio.hasAudio || usingAudioLoader) {
+        codecs.audio = playlistCodecs.audio || media.main.audioCodec || media.audio.audioCodec || DEFAULT_AUDIO_CODEC; // set audio isFmp4 so we use the correct "supports" function below
+
+        media.audio.isFmp4 = media.main.hasAudio && !media.main.isMuxed ? media.main.isFmp4 : media.audio.isFmp4;
+      } // no codecs, no playback.
+
+      if (!codecs.audio && !codecs.video) {
+        this.excludePlaylist({
+          playlistToExclude: playlist,
+          error: {
+            message: 'Could not determine codecs for playlist.'
+          },
+          playlistExclusionDuration: Infinity
+        });
+        return;
+      } // fmp4 relies on browser support, while ts relies on muxer support
+
+      const supportFunction = (isFmp4, codec) => isFmp4 ? browserSupportsCodec(codec) : muxerSupportsCodec(codec);
+      const unsupportedCodecs = {};
+      let unsupportedAudio;
+      ['video', 'audio'].forEach(function (type) {
+        if (codecs.hasOwnProperty(type) && !supportFunction(media[type].isFmp4, codecs[type])) {
+          const supporter = media[type].isFmp4 ? 'browser' : 'muxer';
+          unsupportedCodecs[supporter] = unsupportedCodecs[supporter] || [];
+          unsupportedCodecs[supporter].push(codecs[type]);
+          if (type === 'audio') {
+            unsupportedAudio = supporter;
+          }
+        }
+      });
+      if (usingAudioLoader && unsupportedAudio && playlist.attributes.AUDIO) {
+        const audioGroup = playlist.attributes.AUDIO;
+        this.main().playlists.forEach(variant => {
+          const variantAudioGroup = variant.attributes && variant.attributes.AUDIO;
+          if (variantAudioGroup === audioGroup && variant !== playlist) {
+            variant.excludeUntil = Infinity;
+          }
+        });
+        this.logger_(`excluding audio group ${audioGroup} as ${unsupportedAudio} does not support codec(s): "${codecs.audio}"`);
+      } // if we have any unsupported codecs exclude this playlist.
+
+      if (Object.keys(unsupportedCodecs).length) {
+        const message = Object.keys(unsupportedCodecs).reduce((acc, supporter) => {
+          if (acc) {
+            acc += ', ';
+          }
+          acc += `${supporter} does not support codec(s): "${unsupportedCodecs[supporter].join(',')}"`;
+          return acc;
+        }, '') + '.';
+        this.excludePlaylist({
+          playlistToExclude: playlist,
+          error: {
+            internal: true,
+            message
+          },
+          playlistExclusionDuration: Infinity
+        });
+        return;
+      } // check if codec switching is happening
+
+      if (this.sourceUpdater_.hasCreatedSourceBuffers() && !this.sourceUpdater_.canChangeType()) {
+        const switchMessages = [];
+        ['video', 'audio'].forEach(type => {
+          const newCodec = (parseCodecs(this.sourceUpdater_.codecs[type] || '')[0] || {}).type;
+          const oldCodec = (parseCodecs(codecs[type] || '')[0] || {}).type;
+          if (newCodec && oldCodec && newCodec.toLowerCase() !== oldCodec.toLowerCase()) {
+            switchMessages.push(`"${this.sourceUpdater_.codecs[type]}" -> "${codecs[type]}"`);
+          }
+        });
+        if (switchMessages.length) {
+          this.excludePlaylist({
+            playlistToExclude: playlist,
+            error: {
+              message: `Codec switching not supported: ${switchMessages.join(', ')}.`,
+              internal: true
+            },
+            playlistExclusionDuration: Infinity
+          });
+          return;
+        }
+      } // TODO: when using the muxer shouldn't we just return
+      // the codecs that the muxer outputs?
+
+      return codecs;
+    }
+    /**
+     * Create source buffers and exlude any incompatible renditions.
+     *
+     * @private
+     */
+
+    tryToCreateSourceBuffers_() {
+      // media source is not ready yet or sourceBuffers are already
+      // created.
+      if (this.mediaSource.readyState !== 'open' || this.sourceUpdater_.hasCreatedSourceBuffers()) {
+        return;
+      }
+      if (!this.areMediaTypesKnown_()) {
+        return;
+      }
+      const codecs = this.getCodecsOrExclude_(); // no codecs means that the playlist was excluded
+
+      if (!codecs) {
+        return;
+      }
+      this.sourceUpdater_.createSourceBuffers(codecs);
+      const codecString = [codecs.video, codecs.audio].filter(Boolean).join(',');
+      this.excludeIncompatibleVariants_(codecString);
+    }
+    /**
+     * Excludes playlists with codecs that are unsupported by the muxer and browser.
+     */
+
+    excludeUnsupportedVariants_() {
+      const playlists = this.main().playlists;
+      const ids = []; // TODO: why don't we have a property to loop through all
+      // playlist? Why did we ever mix indexes and keys?
+
+      Object.keys(playlists).forEach(key => {
+        const variant = playlists[key]; // check if we already processed this playlist.
+
+        if (ids.indexOf(variant.id) !== -1) {
+          return;
+        }
+        ids.push(variant.id);
+        const codecs = codecsForPlaylist(this.main, variant);
+        const unsupported = [];
+        if (codecs.audio && !muxerSupportsCodec(codecs.audio) && !browserSupportsCodec(codecs.audio)) {
+          unsupported.push(`audio codec ${codecs.audio}`);
+        }
+        if (codecs.video && !muxerSupportsCodec(codecs.video) && !browserSupportsCodec(codecs.video)) {
+          unsupported.push(`video codec ${codecs.video}`);
+        }
+        if (codecs.text && codecs.text === 'stpp.ttml.im1t') {
+          unsupported.push(`text codec ${codecs.text}`);
+        }
+        if (unsupported.length) {
+          variant.excludeUntil = Infinity;
+          this.logger_(`excluding ${variant.id} for unsupported: ${unsupported.join(', ')}`);
+        }
+      });
+    }
+    /**
+     * Exclude playlists that are known to be codec or
+     * stream-incompatible with the SourceBuffer configuration. For
+     * instance, Media Source Extensions would cause the video element to
+     * stall waiting for video data if you switched from a variant with
+     * video and audio to an audio-only one.
+     *
+     * @param {Object} media a media playlist compatible with the current
+     * set of SourceBuffers. Variants in the current main playlist that
+     * do not appear to have compatible codec or stream configurations
+     * will be excluded from the default playlist selection algorithm
+     * indefinitely.
+     * @private
+     */
+
+    excludeIncompatibleVariants_(codecString) {
+      const ids = [];
+      const playlists = this.main().playlists;
+      const codecs = unwrapCodecList(parseCodecs(codecString));
+      const codecCount_ = codecCount(codecs);
+      const videoDetails = codecs.video && parseCodecs(codecs.video)[0] || null;
+      const audioDetails = codecs.audio && parseCodecs(codecs.audio)[0] || null;
+      Object.keys(playlists).forEach(key => {
+        const variant = playlists[key]; // check if we already processed this playlist.
+        // or it if it is already excluded forever.
+
+        if (ids.indexOf(variant.id) !== -1 || variant.excludeUntil === Infinity) {
+          return;
+        }
+        ids.push(variant.id);
+        const exclusionReasons = []; // get codecs from the playlist for this variant
+
+        const variantCodecs = codecsForPlaylist(this.mainPlaylistLoader_.main, variant);
+        const variantCodecCount = codecCount(variantCodecs); // if no codecs are listed, we cannot determine that this
+        // variant is incompatible. Wait for mux.js to probe
+
+        if (!variantCodecs.audio && !variantCodecs.video) {
+          return;
+        } // TODO: we can support this by removing the
+        // old media source and creating a new one, but it will take some work.
+        // The number of streams cannot change
+
+        if (variantCodecCount !== codecCount_) {
+          exclusionReasons.push(`codec count "${variantCodecCount}" !== "${codecCount_}"`);
+        } // only exclude playlists by codec change, if codecs cannot switch
+        // during playback.
+
+        if (!this.sourceUpdater_.canChangeType()) {
+          const variantVideoDetails = variantCodecs.video && parseCodecs(variantCodecs.video)[0] || null;
+          const variantAudioDetails = variantCodecs.audio && parseCodecs(variantCodecs.audio)[0] || null; // the video codec cannot change
+
+          if (variantVideoDetails && videoDetails && variantVideoDetails.type.toLowerCase() !== videoDetails.type.toLowerCase()) {
+            exclusionReasons.push(`video codec "${variantVideoDetails.type}" !== "${videoDetails.type}"`);
+          } // the audio codec cannot change
+
+          if (variantAudioDetails && audioDetails && variantAudioDetails.type.toLowerCase() !== audioDetails.type.toLowerCase()) {
+            exclusionReasons.push(`audio codec "${variantAudioDetails.type}" !== "${audioDetails.type}"`);
+          }
+        }
+        if (exclusionReasons.length) {
+          variant.excludeUntil = Infinity;
+          this.logger_(`excluding ${variant.id}: ${exclusionReasons.join(' && ')}`);
+        }
+      });
+    }
+    updateAdCues_(media) {
+      let offset = 0;
+      const seekable = this.seekable();
+      if (seekable.length) {
+        offset = seekable.start(0);
+      }
+      updateAdCues(media, this.cueTagsTrack_, offset);
+    }
+    /**
+     * Calculates the desired forward buffer length based on current time
+     *
+     * @return {number} Desired forward buffer length in seconds
+     */
+
+    goalBufferLength() {
+      const currentTime = this.tech_.currentTime();
+      const initial = Config.GOAL_BUFFER_LENGTH;
+      const rate = Config.GOAL_BUFFER_LENGTH_RATE;
+      const max = Math.max(initial, Config.MAX_GOAL_BUFFER_LENGTH);
+      return Math.min(initial + currentTime * rate, max);
+    }
+    /**
+     * Calculates the desired buffer low water line based on current time
+     *
+     * @return {number} Desired buffer low water line in seconds
+     */
+
+    bufferLowWaterLine() {
+      const currentTime = this.tech_.currentTime();
+      const initial = Config.BUFFER_LOW_WATER_LINE;
+      const rate = Config.BUFFER_LOW_WATER_LINE_RATE;
+      const max = Math.max(initial, Config.MAX_BUFFER_LOW_WATER_LINE);
+      const newMax = Math.max(initial, Config.EXPERIMENTAL_MAX_BUFFER_LOW_WATER_LINE);
+      return Math.min(initial + currentTime * rate, this.bufferBasedABR ? newMax : max);
+    }
+    bufferHighWaterLine() {
+      return Config.BUFFER_HIGH_WATER_LINE;
+    }
+    addDateRangesToTextTrack_(dateRanges) {
+      createMetadataTrackIfNotExists(this.inbandTextTracks_, 'com.apple.streaming', this.tech_);
+      addDateRangeMetadata({
+        inbandTextTracks: this.inbandTextTracks_,
+        dateRanges
+      });
+    }
+    addMetadataToTextTrack(dispatchType, metadataArray, videoDuration) {
+      const timestampOffset = this.sourceUpdater_.videoBuffer ? this.sourceUpdater_.videoTimestampOffset() : this.sourceUpdater_.audioTimestampOffset(); // There's potentially an issue where we could double add metadata if there's a muxed
+      // audio/video source with a metadata track, and an alt audio with a metadata track.
+      // However, this probably won't happen, and if it does it can be handled then.
+
+      createMetadataTrackIfNotExists(this.inbandTextTracks_, dispatchType, this.tech_);
+      addMetadata({
+        inbandTextTracks: this.inbandTextTracks_,
+        metadataArray,
+        timestampOffset,
+        videoDuration
+      });
+    }
+    /**
+     * Utility for getting the pathway or service location from an HLS or DASH playlist.
+     *
+     * @param {Object} playlist for getting pathway from.
+     * @return the pathway attribute of a playlist
+     */
+
+    pathwayAttribute_(playlist) {
+      return playlist.attributes['PATHWAY-ID'] || playlist.attributes.serviceLocation;
+    }
+    /**
+     * Initialize available pathways and apply the tag properties.
+     */
+
+    initContentSteeringController_() {
+      const main = this.main();
+      if (!main.contentSteering) {
+        return;
+      }
+      for (const playlist of main.playlists) {
+        this.contentSteeringController_.addAvailablePathway(this.pathwayAttribute_(playlist));
+      }
+      this.contentSteeringController_.assignTagProperties(main.uri, main.contentSteering); // request the steering manifest immediately if queryBeforeStart is set.
+
+      if (this.contentSteeringController_.queryBeforeStart) {
+        // When queryBeforeStart is true, initial request should omit steering parameters.
+        this.contentSteeringController_.requestSteeringManifest(true);
+        return;
+      } // otherwise start content steering after playback starts
+
+      this.tech_.one('canplay', () => {
+        this.contentSteeringController_.requestSteeringManifest();
+      });
+    }
+    /**
+     * Reset the content steering controller and re-init.
+     */
+
+    resetContentSteeringController_() {
+      this.contentSteeringController_.clearAvailablePathways();
+      this.contentSteeringController_.dispose();
+      this.initContentSteeringController_();
+    }
+    /**
+     * Attaches the listeners for content steering.
+     */
+
+    attachContentSteeringListeners_() {
+      this.contentSteeringController_.on('content-steering', this.excludeThenChangePathway_.bind(this));
+      if (this.sourceType_ === 'dash') {
+        this.mainPlaylistLoader_.on('loadedplaylist', () => {
+          const main = this.main(); // check if steering tag or pathways changed.
+
+          const didDashTagChange = this.contentSteeringController_.didDASHTagChange(main.uri, main.contentSteering);
+          const didPathwaysChange = () => {
+            const availablePathways = this.contentSteeringController_.getAvailablePathways();
+            const newPathways = [];
+            for (const playlist of main.playlists) {
+              const serviceLocation = playlist.attributes.serviceLocation;
+              if (serviceLocation) {
+                newPathways.push(serviceLocation);
+                if (!availablePathways.has(serviceLocation)) {
+                  return true;
+                }
+              }
+            } // If we have no new serviceLocations and previously had availablePathways
+
+            if (!newPathways.length && availablePathways.size) {
+              return true;
+            }
+            return false;
+          };
+          if (didDashTagChange || didPathwaysChange()) {
+            this.resetContentSteeringController_();
+          }
+        });
+      }
+    }
+    /**
+     * Simple exclude and change playlist logic for content steering.
+     */
+
+    excludeThenChangePathway_() {
+      const currentPathway = this.contentSteeringController_.getPathway();
+      if (!currentPathway) {
+        return;
+      }
+      this.handlePathwayClones_();
+      const main = this.main();
+      const playlists = main.playlists;
+      const ids = new Set();
+      let didEnablePlaylists = false;
+      Object.keys(playlists).forEach(key => {
+        const variant = playlists[key];
+        const pathwayId = this.pathwayAttribute_(variant);
+        const differentPathwayId = pathwayId && currentPathway !== pathwayId;
+        const steeringExclusion = variant.excludeUntil === Infinity && variant.lastExcludeReason_ === 'content-steering';
+        if (steeringExclusion && !differentPathwayId) {
+          delete variant.excludeUntil;
+          delete variant.lastExcludeReason_;
+          didEnablePlaylists = true;
+        }
+        const noExcludeUntil = !variant.excludeUntil && variant.excludeUntil !== Infinity;
+        const shouldExclude = !ids.has(variant.id) && differentPathwayId && noExcludeUntil;
+        if (!shouldExclude) {
+          return;
+        }
+        ids.add(variant.id);
+        variant.excludeUntil = Infinity;
+        variant.lastExcludeReason_ = 'content-steering'; // TODO: kind of spammy, maybe move this.
+
+        this.logger_(`excluding ${variant.id} for ${variant.lastExcludeReason_}`);
+      });
+      if (this.contentSteeringController_.manifestType_ === 'DASH') {
+        Object.keys(this.mediaTypes_).forEach(key => {
+          const type = this.mediaTypes_[key];
+          if (type.activePlaylistLoader) {
+            const currentPlaylist = type.activePlaylistLoader.media_; // Check if the current media playlist matches the current CDN
+
+            if (currentPlaylist && currentPlaylist.attributes.serviceLocation !== currentPathway) {
+              didEnablePlaylists = true;
+            }
+          }
+        });
+      }
+      if (didEnablePlaylists) {
+        this.changeSegmentPathway_();
+      }
+    }
+    /**
+     * Add, update, or delete playlists and media groups for
+     * the pathway clones for HLS Content Steering.
+     *
+     * See https://datatracker.ietf.org/doc/draft-pantos-hls-rfc8216bis/
+     *
+     * NOTE: Pathway cloning does not currently support the `PER_VARIANT_URIS` and
+     * `PER_RENDITION_URIS` as we do not handle `STABLE-VARIANT-ID` or
+     * `STABLE-RENDITION-ID` values.
+     */
+
+    handlePathwayClones_() {
+      const main = this.main();
+      const playlists = main.playlists;
+      const currentPathwayClones = this.contentSteeringController_.currentPathwayClones;
+      const nextPathwayClones = this.contentSteeringController_.nextPathwayClones;
+      const hasClones = currentPathwayClones && currentPathwayClones.size || nextPathwayClones && nextPathwayClones.size;
+      if (!hasClones) {
+        return;
+      }
+      for (const [id, clone] of currentPathwayClones.entries()) {
+        const newClone = nextPathwayClones.get(id); // Delete the old pathway clone.
+
+        if (!newClone) {
+          this.mainPlaylistLoader_.updateOrDeleteClone(clone);
+          this.contentSteeringController_.excludePathway(id);
+        }
+      }
+      for (const [id, clone] of nextPathwayClones.entries()) {
+        const oldClone = currentPathwayClones.get(id); // Create a new pathway if it is a new pathway clone object.
+
+        if (!oldClone) {
+          const playlistsToClone = playlists.filter(p => {
+            return p.attributes['PATHWAY-ID'] === clone['BASE-ID'];
+          });
+          playlistsToClone.forEach(p => {
+            this.mainPlaylistLoader_.addClonePathway(clone, p);
+          });
+          this.contentSteeringController_.addAvailablePathway(id);
+          continue;
+        } // There have not been changes to the pathway clone object, so skip.
+
+        if (this.equalPathwayClones_(oldClone, clone)) {
+          continue;
+        } // Update a preexisting cloned pathway.
+        // True is set for the update flag.
+
+        this.mainPlaylistLoader_.updateOrDeleteClone(clone, true);
+        this.contentSteeringController_.addAvailablePathway(id);
+      } // Deep copy contents of next to current pathways.
+
+      this.contentSteeringController_.currentPathwayClones = new Map(JSON.parse(JSON.stringify([...nextPathwayClones])));
+    }
+    /**
+     * Determines whether two pathway clone objects are equivalent.
+     *
+     * @param {Object} a The first pathway clone object.
+     * @param {Object} b The second pathway clone object.
+     * @return {boolean} True if the pathway clone objects are equal, false otherwise.
+     */
+
+    equalPathwayClones_(a, b) {
+      if (a['BASE-ID'] !== b['BASE-ID'] || a.ID !== b.ID || a['URI-REPLACEMENT'].HOST !== b['URI-REPLACEMENT'].HOST) {
+        return false;
+      }
+      const aParams = a['URI-REPLACEMENT'].PARAMS;
+      const bParams = b['URI-REPLACEMENT'].PARAMS; // We need to iterate through both lists of params because one could be
+      // missing a parameter that the other has.
+
+      for (const p in aParams) {
+        if (aParams[p] !== bParams[p]) {
+          return false;
+        }
+      }
+      for (const p in bParams) {
+        if (aParams[p] !== bParams[p]) {
+          return false;
+        }
+      }
+      return true;
+    }
+    /**
+     * Changes the current playlists for audio, video and subtitles after a new pathway
+     * is chosen from content steering.
+     */
+
+    changeSegmentPathway_() {
+      const nextPlaylist = this.selectPlaylist();
+      this.pauseLoading(); // Switch audio and text track playlists if necessary in DASH
+
+      if (this.contentSteeringController_.manifestType_ === 'DASH') {
+        this.switchMediaForDASHContentSteering_();
+      }
+      this.switchMedia_(nextPlaylist, 'content-steering');
+    }
+    /**
+     * Iterates through playlists and check their keyId set and compare with the
+     * keyStatusMap, only enable playlists that have a usable key. If the playlist
+     * has no keyId leave it enabled by default.
+     */
+
+    excludeNonUsablePlaylistsByKeyId_() {
+      if (!this.mainPlaylistLoader_ || !this.mainPlaylistLoader_.main) {
+        return;
+      }
+      let nonUsableKeyStatusCount = 0;
+      const NON_USABLE = 'non-usable';
+      this.mainPlaylistLoader_.main.playlists.forEach(playlist => {
+        const keyIdSet = this.mainPlaylistLoader_.getKeyIdSet(playlist); // If the playlist doesn't have keyIDs lets not exclude it.
+
+        if (!keyIdSet || !keyIdSet.size) {
+          return;
+        }
+        keyIdSet.forEach(key => {
+          const USABLE = 'usable';
+          const hasUsableKeyStatus = this.keyStatusMap_.has(key) && this.keyStatusMap_.get(key) === USABLE;
+          const nonUsableExclusion = playlist.lastExcludeReason_ === NON_USABLE && playlist.excludeUntil === Infinity;
+          if (!hasUsableKeyStatus) {
+            // Only exclude playlists that haven't already been excluded as non-usable.
+            if (playlist.excludeUntil !== Infinity && playlist.lastExcludeReason_ !== NON_USABLE) {
+              playlist.excludeUntil = Infinity;
+              playlist.lastExcludeReason_ = NON_USABLE;
+              this.logger_(`excluding playlist ${playlist.id} because the key ID ${key} doesn't exist in the keyStatusMap or is not ${USABLE}`);
+            } // count all nonUsableKeyStatus
+
+            nonUsableKeyStatusCount++;
+          } else if (hasUsableKeyStatus && nonUsableExclusion) {
+            delete playlist.excludeUntil;
+            delete playlist.lastExcludeReason_;
+            this.logger_(`enabling playlist ${playlist.id} because key ID ${key} is ${USABLE}`);
+          }
+        });
+      }); // If for whatever reason every playlist has a non usable key status. Lets try re-including the SD renditions as a failsafe.
+
+      if (nonUsableKeyStatusCount >= this.mainPlaylistLoader_.main.playlists.length) {
+        this.mainPlaylistLoader_.main.playlists.forEach(playlist => {
+          const isNonHD = playlist && playlist.attributes && playlist.attributes.RESOLUTION && playlist.attributes.RESOLUTION.height < 720;
+          const excludedForNonUsableKey = playlist.excludeUntil === Infinity && playlist.lastExcludeReason_ === NON_USABLE;
+          if (isNonHD && excludedForNonUsableKey) {
+            // Only delete the excludeUntil so we don't try and re-exclude these playlists.
+            delete playlist.excludeUntil;
+            videojs.log.warn(`enabling non-HD playlist ${playlist.id} because all playlists were excluded due to ${NON_USABLE} key IDs`);
+          }
+        });
+      }
+    }
+    /**
+     * Adds a keystatus to the keystatus map, tries to convert to string if necessary.
+     *
+     * @param {any} keyId the keyId to add a status for
+     * @param {string} status the status of the keyId
+     */
+
+    addKeyStatus_(keyId, status) {
+      const isString = typeof keyId === 'string';
+      const keyIdHexString = isString ? keyId : bufferToHexString(keyId);
+      const formattedKeyIdString = keyIdHexString.slice(0, 32).toLowerCase();
+      this.logger_(`KeyStatus '${status}' with key ID ${formattedKeyIdString} added to the keyStatusMap`);
+      this.keyStatusMap_.set(formattedKeyIdString, status);
+    }
+    /**
+     * Utility function for adding key status to the keyStatusMap and filtering usable encrypted playlists.
+     *
+     * @param {any} keyId the keyId from the keystatuschange event
+     * @param {string} status the key status string
+     */
+
+    updatePlaylistByKeyStatus(keyId, status) {
+      this.addKeyStatus_(keyId, status);
+      if (!this.waitingForFastQualityPlaylistReceived_) {
+        this.excludeNonUsableThenChangePlaylist_();
+      } // Listen to loadedplaylist with a single listener and check for new contentProtection elements when a playlist is updated.
+
+      this.mainPlaylistLoader_.off('loadedplaylist', this.excludeNonUsableThenChangePlaylist_.bind(this));
+      this.mainPlaylistLoader_.on('loadedplaylist', this.excludeNonUsableThenChangePlaylist_.bind(this));
+    }
+    excludeNonUsableThenChangePlaylist_() {
+      this.excludeNonUsablePlaylistsByKeyId_();
+      this.fastQualityChange_();
+    }
+  }
+
+  /**
+   * Returns a function that acts as the Enable/disable playlist function.
+   *
+   * @param {PlaylistLoader} loader - The main playlist loader
+   * @param {string} playlistID - id of the playlist
+   * @param {Function} changePlaylistFn - A function to be called after a
+   * playlist's enabled-state has been changed. Will NOT be called if a
+   * playlist's enabled-state is unchanged
+   * @param {boolean=} enable - Value to set the playlist enabled-state to
+   * or if undefined returns the current enabled-state for the playlist
+   * @return {Function} Function for setting/getting enabled
+   */
+
+  const enableFunction = (loader, playlistID, changePlaylistFn) => enable => {
+    const playlist = loader.main.playlists[playlistID];
+    const incompatible = isIncompatible(playlist);
+    const currentlyEnabled = isEnabled(playlist);
+    if (typeof enable === 'undefined') {
+      return currentlyEnabled;
+    }
+    if (enable) {
+      delete playlist.disabled;
+    } else {
+      playlist.disabled = true;
+    }
+    if (enable !== currentlyEnabled && !incompatible) {
+      // Ensure the outside world knows about our changes
+      changePlaylistFn(playlist);
+      if (enable) {
+        loader.trigger('renditionenabled');
+      } else {
+        loader.trigger('renditiondisabled');
+      }
+    }
+    return enable;
+  };
+  /**
+   * The representation object encapsulates the publicly visible information
+   * in a media playlist along with a setter/getter-type function (enabled)
+   * for changing the enabled-state of a particular playlist entry
+   *
+   * @class Representation
+   */
+
+  class Representation {
+    constructor(vhsHandler, playlist, id) {
+      const {
+        playlistController_: pc
+      } = vhsHandler;
+      const qualityChangeFunction = pc.fastQualityChange_.bind(pc); // some playlist attributes are optional
+
+      if (playlist.attributes) {
+        const resolution = playlist.attributes.RESOLUTION;
+        this.width = resolution && resolution.width;
+        this.height = resolution && resolution.height;
+        this.bandwidth = playlist.attributes.BANDWIDTH;
+        this.frameRate = playlist.attributes['FRAME-RATE'];
+      }
+      this.codecs = codecsForPlaylist(pc.main(), playlist);
+      this.playlist = playlist; // The id is simply the ordinality of the media playlist
+      // within the main playlist
+
+      this.id = id; // Partially-apply the enableFunction to create a playlist-
+      // specific variant
+
+      this.enabled = enableFunction(vhsHandler.playlists, playlist.id, qualityChangeFunction);
+    }
+  }
+  /**
+   * A mixin function that adds the `representations` api to an instance
+   * of the VhsHandler class
+   *
+   * @param {VhsHandler} vhsHandler - An instance of VhsHandler to add the
+   * representation API into
+   */
+
+  const renditionSelectionMixin = function (vhsHandler) {
+    // Add a single API-specific function to the VhsHandler instance
+    vhsHandler.representations = () => {
+      const main = vhsHandler.playlistController_.main();
+      const playlists = isAudioOnly(main) ? vhsHandler.playlistController_.getAudioTrackPlaylists_() : main.playlists;
+      if (!playlists) {
+        return [];
+      }
+      return playlists.filter(media => !isIncompatible(media)).map((e, i) => new Representation(vhsHandler, e, e.id));
+    };
+  };
+
+  /**
+   * @file playback-watcher.js
+   *
+   * Playback starts, and now my watch begins. It shall not end until my death. I shall
+   * take no wait, hold no uncleared timeouts, father no bad seeks. I shall wear no crowns
+   * and win no glory. I shall live and die at my post. I am the corrector of the underflow.
+   * I am the watcher of gaps. I am the shield that guards the realms of seekable. I pledge
+   * my life and honor to the Playback Watch, for this Player and all the Players to come.
+   */
+
+  const timerCancelEvents = ['seeking', 'seeked', 'pause', 'playing', 'error'];
+  /**
+   * @class PlaybackWatcher
+   */
+
+  class PlaybackWatcher {
+    /**
+     * Represents an PlaybackWatcher object.
+     *
+     * @class
+     * @param {Object} options an object that includes the tech and settings
+     */
+    constructor(options) {
+      this.playlistController_ = options.playlistController;
+      this.tech_ = options.tech;
+      this.seekable = options.seekable;
+      this.allowSeeksWithinUnsafeLiveWindow = options.allowSeeksWithinUnsafeLiveWindow;
+      this.liveRangeSafeTimeDelta = options.liveRangeSafeTimeDelta;
+      this.media = options.media;
+      this.consecutiveUpdates = 0;
+      this.lastRecordedTime = null;
+      this.checkCurrentTimeTimeout_ = null;
+      this.logger_ = logger('PlaybackWatcher');
+      this.logger_('initialize');
+      const playHandler = () => this.monitorCurrentTime_();
+      const canPlayHandler = () => this.monitorCurrentTime_();
+      const waitingHandler = () => this.techWaiting_();
+      const cancelTimerHandler = () => this.resetTimeUpdate_();
+      const pc = this.playlistController_;
+      const loaderTypes = ['main', 'subtitle', 'audio'];
+      const loaderChecks = {};
+      loaderTypes.forEach(type => {
+        loaderChecks[type] = {
+          reset: () => this.resetSegmentDownloads_(type),
+          updateend: () => this.checkSegmentDownloads_(type)
+        };
+        pc[`${type}SegmentLoader_`].on('appendsdone', loaderChecks[type].updateend); // If a rendition switch happens during a playback stall where the buffer
+        // isn't changing we want to reset. We cannot assume that the new rendition
+        // will also be stalled, until after new appends.
+
+        pc[`${type}SegmentLoader_`].on('playlistupdate', loaderChecks[type].reset); // Playback stalls should not be detected right after seeking.
+        // This prevents one segment playlists (single vtt or single segment content)
+        // from being detected as stalling. As the buffer will not change in those cases, since
+        // the buffer is the entire video duration.
+
+        this.tech_.on(['seeked', 'seeking'], loaderChecks[type].reset);
+      });
+      /**
+       * We check if a seek was into a gap through the following steps:
+       * 1. We get a seeking event and we do not get a seeked event. This means that
+       *    a seek was attempted but not completed.
+       * 2. We run `fixesBadSeeks_` on segment loader appends. This means that we already
+       *    removed everything from our buffer and appended a segment, and should be ready
+       *    to check for gaps.
+       */
+
+      const setSeekingHandlers = fn => {
+        ['main', 'audio'].forEach(type => {
+          pc[`${type}SegmentLoader_`][fn]('appended', this.seekingAppendCheck_);
+        });
+      };
+      this.seekingAppendCheck_ = () => {
+        if (this.fixesBadSeeks_()) {
+          this.consecutiveUpdates = 0;
+          this.lastRecordedTime = this.tech_.currentTime();
+          setSeekingHandlers('off');
+        }
+      };
+      this.clearSeekingAppendCheck_ = () => setSeekingHandlers('off');
+      this.watchForBadSeeking_ = () => {
+        this.clearSeekingAppendCheck_();
+        setSeekingHandlers('on');
+      };
+      this.tech_.on('seeked', this.clearSeekingAppendCheck_);
+      this.tech_.on('seeking', this.watchForBadSeeking_);
+      this.tech_.on('waiting', waitingHandler);
+      this.tech_.on(timerCancelEvents, cancelTimerHandler);
+      this.tech_.on('canplay', canPlayHandler);
+      /*
+        An edge case exists that results in gaps not being skipped when they exist at the beginning of a stream. This case
+        is surfaced in one of two ways:
+         1)  The `waiting` event is fired before the player has buffered content, making it impossible
+            to find or skip the gap. The `waiting` event is followed by a `play` event. On first play
+            we can check if playback is stalled due to a gap, and skip the gap if necessary.
+        2)  A source with a gap at the beginning of the stream is loaded programatically while the player
+            is in a playing state. To catch this case, it's important that our one-time play listener is setup
+            even if the player is in a playing state
+      */
+
+      this.tech_.one('play', playHandler); // Define the dispose function to clean up our events
+
+      this.dispose = () => {
+        this.clearSeekingAppendCheck_();
+        this.logger_('dispose');
+        this.tech_.off('waiting', waitingHandler);
+        this.tech_.off(timerCancelEvents, cancelTimerHandler);
+        this.tech_.off('canplay', canPlayHandler);
+        this.tech_.off('play', playHandler);
+        this.tech_.off('seeking', this.watchForBadSeeking_);
+        this.tech_.off('seeked', this.clearSeekingAppendCheck_);
+        loaderTypes.forEach(type => {
+          pc[`${type}SegmentLoader_`].off('appendsdone', loaderChecks[type].updateend);
+          pc[`${type}SegmentLoader_`].off('playlistupdate', loaderChecks[type].reset);
+          this.tech_.off(['seeked', 'seeking'], loaderChecks[type].reset);
+        });
+        if (this.checkCurrentTimeTimeout_) {
+          window.clearTimeout(this.checkCurrentTimeTimeout_);
+        }
+        this.resetTimeUpdate_();
+      };
+    }
+    /**
+     * Periodically check current time to see if playback stopped
+     *
+     * @private
+     */
+
+    monitorCurrentTime_() {
+      this.checkCurrentTime_();
+      if (this.checkCurrentTimeTimeout_) {
+        window.clearTimeout(this.checkCurrentTimeTimeout_);
+      } // 42 = 24 fps // 250 is what Webkit uses // FF uses 15
+
+      this.checkCurrentTimeTimeout_ = window.setTimeout(this.monitorCurrentTime_.bind(this), 250);
+    }
+    /**
+     * Reset stalled download stats for a specific type of loader
+     *
+     * @param {string} type
+     *        The segment loader type to check.
+     *
+     * @listens SegmentLoader#playlistupdate
+     * @listens Tech#seeking
+     * @listens Tech#seeked
+     */
+
+    resetSegmentDownloads_(type) {
+      const loader = this.playlistController_[`${type}SegmentLoader_`];
+      if (this[`${type}StalledDownloads_`] > 0) {
+        this.logger_(`resetting possible stalled download count for ${type} loader`);
+      }
+      this[`${type}StalledDownloads_`] = 0;
+      this[`${type}Buffered_`] = loader.buffered_();
+    }
+    /**
+     * Checks on every segment `appendsdone` to see
+     * if segment appends are making progress. If they are not
+     * and we are still downloading bytes. We exclude the playlist.
+     *
+     * @param {string} type
+     *        The segment loader type to check.
+     *
+     * @listens SegmentLoader#appendsdone
+     */
+
+    checkSegmentDownloads_(type) {
+      const pc = this.playlistController_;
+      const loader = pc[`${type}SegmentLoader_`];
+      const buffered = loader.buffered_();
+      const isBufferedDifferent = isRangeDifferent(this[`${type}Buffered_`], buffered);
+      this[`${type}Buffered_`] = buffered; // if another watcher is going to fix the issue or
+      // the buffered value for this loader changed
+      // appends are working
+
+      if (isBufferedDifferent) {
+        this.resetSegmentDownloads_(type);
+        return;
+      }
+      this[`${type}StalledDownloads_`]++;
+      this.logger_(`found #${this[`${type}StalledDownloads_`]} ${type} appends that did not increase buffer (possible stalled download)`, {
+        playlistId: loader.playlist_ && loader.playlist_.id,
+        buffered: timeRangesToArray(buffered)
+      }); // after 10 possibly stalled appends with no reset, exclude
+
+      if (this[`${type}StalledDownloads_`] < 10) {
+        return;
+      }
+      this.logger_(`${type} loader stalled download exclusion`);
+      this.resetSegmentDownloads_(type);
+      this.tech_.trigger({
+        type: 'usage',
+        name: `vhs-${type}-download-exclusion`
+      });
+      if (type === 'subtitle') {
+        return;
+      } // TODO: should we exclude audio tracks rather than main tracks
+      // when type is audio?
+
+      pc.excludePlaylist({
+        error: {
+          message: `Excessive ${type} segment downloading detected.`
+        },
+        playlistExclusionDuration: Infinity
+      });
+    }
+    /**
+     * The purpose of this function is to emulate the "waiting" event on
+     * browsers that do not emit it when they are waiting for more
+     * data to continue playback
+     *
+     * @private
+     */
+
+    checkCurrentTime_() {
+      if (this.tech_.paused() || this.tech_.seeking()) {
+        return;
+      }
+      const currentTime = this.tech_.currentTime();
+      const buffered = this.tech_.buffered();
+      if (this.lastRecordedTime === currentTime && (!buffered.length || currentTime + SAFE_TIME_DELTA >= buffered.end(buffered.length - 1))) {
+        // If current time is at the end of the final buffered region, then any playback
+        // stall is most likely caused by buffering in a low bandwidth environment. The tech
+        // should fire a `waiting` event in this scenario, but due to browser and tech
+        // inconsistencies. Calling `techWaiting_` here allows us to simulate
+        // responding to a native `waiting` event when the tech fails to emit one.
+        return this.techWaiting_();
+      }
+      if (this.consecutiveUpdates >= 5 && currentTime === this.lastRecordedTime) {
+        this.consecutiveUpdates++;
+        this.waiting_();
+      } else if (currentTime === this.lastRecordedTime) {
+        this.consecutiveUpdates++;
+      } else {
+        this.consecutiveUpdates = 0;
+        this.lastRecordedTime = currentTime;
+      }
+    }
+    /**
+     * Resets the 'timeupdate' mechanism designed to detect that we are stalled
+     *
+     * @private
+     */
+
+    resetTimeUpdate_() {
+      this.consecutiveUpdates = 0;
+    }
+    /**
+     * Fixes situations where there's a bad seek
+     *
+     * @return {boolean} whether an action was taken to fix the seek
+     * @private
+     */
+
+    fixesBadSeeks_() {
+      const seeking = this.tech_.seeking();
+      if (!seeking) {
+        return false;
+      } // TODO: It's possible that these seekable checks should be moved out of this function
+      // and into a function that runs on seekablechange. It's also possible that we only need
+      // afterSeekableWindow as the buffered check at the bottom is good enough to handle before
+      // seekable range.
+
+      const seekable = this.seekable();
+      const currentTime = this.tech_.currentTime();
+      const isAfterSeekableRange = this.afterSeekableWindow_(seekable, currentTime, this.media(), this.allowSeeksWithinUnsafeLiveWindow);
+      let seekTo;
+      if (isAfterSeekableRange) {
+        const seekableEnd = seekable.end(seekable.length - 1); // sync to live point (if VOD, our seekable was updated and we're simply adjusting)
+
+        seekTo = seekableEnd;
+      }
+      if (this.beforeSeekableWindow_(seekable, currentTime)) {
+        const seekableStart = seekable.start(0); // sync to the beginning of the live window
+        // provide a buffer of .1 seconds to handle rounding/imprecise numbers
+
+        seekTo = seekableStart + (
+        // if the playlist is too short and the seekable range is an exact time (can
+        // happen in live with a 3 segment playlist), then don't use a time delta
+        seekableStart === seekable.end(0) ? 0 : SAFE_TIME_DELTA);
+      }
+      if (typeof seekTo !== 'undefined') {
+        this.logger_(`Trying to seek outside of seekable at time ${currentTime} with ` + `seekable range ${printableRange(seekable)}. Seeking to ` + `${seekTo}.`);
+        this.tech_.setCurrentTime(seekTo);
+        return true;
+      }
+      const sourceUpdater = this.playlistController_.sourceUpdater_;
+      const buffered = this.tech_.buffered();
+      const audioBuffered = sourceUpdater.audioBuffer ? sourceUpdater.audioBuffered() : null;
+      const videoBuffered = sourceUpdater.videoBuffer ? sourceUpdater.videoBuffered() : null;
+      const media = this.media(); // verify that at least two segment durations or one part duration have been
+      // appended before checking for a gap.
+
+      const minAppendedDuration = media.partTargetDuration ? media.partTargetDuration : (media.targetDuration - TIME_FUDGE_FACTOR) * 2; // verify that at least two segment durations have been
+      // appended before checking for a gap.
+
+      const bufferedToCheck = [audioBuffered, videoBuffered];
+      for (let i = 0; i < bufferedToCheck.length; i++) {
+        // skip null buffered
+        if (!bufferedToCheck[i]) {
+          continue;
+        }
+        const timeAhead = timeAheadOf(bufferedToCheck[i], currentTime); // if we are less than two video/audio segment durations or one part
+        // duration behind we haven't appended enough to call this a bad seek.
+
+        if (timeAhead < minAppendedDuration) {
+          return false;
+        }
+      }
+      const nextRange = findNextRange(buffered, currentTime); // we have appended enough content, but we don't have anything buffered
+      // to seek over the gap
+
+      if (nextRange.length === 0) {
+        return false;
+      }
+      seekTo = nextRange.start(0) + SAFE_TIME_DELTA;
+      this.logger_(`Buffered region starts (${nextRange.start(0)}) ` + ` just beyond seek point (${currentTime}). Seeking to ${seekTo}.`);
+      this.tech_.setCurrentTime(seekTo);
+      return true;
+    }
+    /**
+     * Handler for situations when we determine the player is waiting.
+     *
+     * @private
+     */
+
+    waiting_() {
+      if (this.techWaiting_()) {
+        return;
+      } // All tech waiting checks failed. Use last resort correction
+
+      const currentTime = this.tech_.currentTime();
+      const buffered = this.tech_.buffered();
+      const currentRange = findRange(buffered, currentTime); // Sometimes the player can stall for unknown reasons within a contiguous buffered
+      // region with no indication that anything is amiss (seen in Firefox). Seeking to
+      // currentTime is usually enough to kickstart the player. This checks that the player
+      // is currently within a buffered region before attempting a corrective seek.
+      // Chrome does not appear to continue `timeupdate` events after a `waiting` event
+      // until there is ~ 3 seconds of forward buffer available. PlaybackWatcher should also
+      // make sure there is ~3 seconds of forward buffer before taking any corrective action
+      // to avoid triggering an `unknownwaiting` event when the network is slow.
+
+      if (currentRange.length && currentTime + 3 <= currentRange.end(0)) {
+        this.resetTimeUpdate_();
+        this.tech_.setCurrentTime(currentTime);
+        this.logger_(`Stopped at ${currentTime} while inside a buffered region ` + `[${currentRange.start(0)} -> ${currentRange.end(0)}]. Attempting to resume ` + 'playback by seeking to the current time.'); // unknown waiting corrections may be useful for monitoring QoS
+
+        this.tech_.trigger({
+          type: 'usage',
+          name: 'vhs-unknown-waiting'
+        });
+        return;
+      }
+    }
+    /**
+     * Handler for situations when the tech fires a `waiting` event
+     *
+     * @return {boolean}
+     *         True if an action (or none) was needed to correct the waiting. False if no
+     *         checks passed
+     * @private
+     */
+
+    techWaiting_() {
+      const seekable = this.seekable();
+      const currentTime = this.tech_.currentTime();
+      if (this.tech_.seeking()) {
+        // Tech is seeking or already waiting on another action, no action needed
+        return true;
+      }
+      if (this.beforeSeekableWindow_(seekable, currentTime)) {
+        const livePoint = seekable.end(seekable.length - 1);
+        this.logger_(`Fell out of live window at time ${currentTime}. Seeking to ` + `live point (seekable end) ${livePoint}`);
+        this.resetTimeUpdate_();
+        this.tech_.setCurrentTime(livePoint); // live window resyncs may be useful for monitoring QoS
+
+        this.tech_.trigger({
+          type: 'usage',
+          name: 'vhs-live-resync'
+        });
+        return true;
+      }
+      const sourceUpdater = this.tech_.vhs.playlistController_.sourceUpdater_;
+      const buffered = this.tech_.buffered();
+      const videoUnderflow = this.videoUnderflow_({
+        audioBuffered: sourceUpdater.audioBuffered(),
+        videoBuffered: sourceUpdater.videoBuffered(),
+        currentTime
+      });
+      if (videoUnderflow) {
+        // Even though the video underflowed and was stuck in a gap, the audio overplayed
+        // the gap, leading currentTime into a buffered range. Seeking to currentTime
+        // allows the video to catch up to the audio position without losing any audio
+        // (only suffering ~3 seconds of frozen video and a pause in audio playback).
+        this.resetTimeUpdate_();
+        this.tech_.setCurrentTime(currentTime); // video underflow may be useful for monitoring QoS
+
+        this.tech_.trigger({
+          type: 'usage',
+          name: 'vhs-video-underflow'
+        });
+        return true;
+      }
+      const nextRange = findNextRange(buffered, currentTime); // check for gap
+
+      if (nextRange.length > 0) {
+        this.logger_(`Stopped at ${currentTime} and seeking to ${nextRange.start(0)}`);
+        this.resetTimeUpdate_();
+        this.skipTheGap_(currentTime);
+        return true;
+      } // All checks failed. Returning false to indicate failure to correct waiting
+
+      return false;
+    }
+    afterSeekableWindow_(seekable, currentTime, playlist, allowSeeksWithinUnsafeLiveWindow = false) {
+      if (!seekable.length) {
+        // we can't make a solid case if there's no seekable, default to false
+        return false;
+      }
+      let allowedEnd = seekable.end(seekable.length - 1) + SAFE_TIME_DELTA;
+      const isLive = !playlist.endList;
+      const isLLHLS = typeof playlist.partTargetDuration === 'number';
+      if (isLive && (isLLHLS || allowSeeksWithinUnsafeLiveWindow)) {
+        allowedEnd = seekable.end(seekable.length - 1) + playlist.targetDuration * 3;
+      }
+      if (currentTime > allowedEnd) {
+        return true;
+      }
+      return false;
+    }
+    beforeSeekableWindow_(seekable, currentTime) {
+      if (seekable.length &&
+      // can't fall before 0 and 0 seekable start identifies VOD stream
+      seekable.start(0) > 0 && currentTime < seekable.start(0) - this.liveRangeSafeTimeDelta) {
+        return true;
+      }
+      return false;
+    }
+    videoUnderflow_({
+      videoBuffered,
+      audioBuffered,
+      currentTime
+    }) {
+      // audio only content will not have video underflow :)
+      if (!videoBuffered) {
+        return;
+      }
+      let gap; // find a gap in demuxed content.
+
+      if (videoBuffered.length && audioBuffered.length) {
+        // in Chrome audio will continue to play for ~3s when we run out of video
+        // so we have to check that the video buffer did have some buffer in the
+        // past.
+        const lastVideoRange = findRange(videoBuffered, currentTime - 3);
+        const videoRange = findRange(videoBuffered, currentTime);
+        const audioRange = findRange(audioBuffered, currentTime);
+        if (audioRange.length && !videoRange.length && lastVideoRange.length) {
+          gap = {
+            start: lastVideoRange.end(0),
+            end: audioRange.end(0)
+          };
+        } // find a gap in muxed content.
+      } else {
+        const nextRange = findNextRange(videoBuffered, currentTime); // Even if there is no available next range, there is still a possibility we are
+        // stuck in a gap due to video underflow.
+
+        if (!nextRange.length) {
+          gap = this.gapFromVideoUnderflow_(videoBuffered, currentTime);
+        }
+      }
+      if (gap) {
+        this.logger_(`Encountered a gap in video from ${gap.start} to ${gap.end}. ` + `Seeking to current time ${currentTime}`);
+        return true;
+      }
+      return false;
+    }
+    /**
+     * Timer callback. If playback still has not proceeded, then we seek
+     * to the start of the next buffered region.
+     *
+     * @private
+     */
+
+    skipTheGap_(scheduledCurrentTime) {
+      const buffered = this.tech_.buffered();
+      const currentTime = this.tech_.currentTime();
+      const nextRange = findNextRange(buffered, currentTime);
+      this.resetTimeUpdate_();
+      if (nextRange.length === 0 || currentTime !== scheduledCurrentTime) {
+        return;
+      }
+      this.logger_('skipTheGap_:', 'currentTime:', currentTime, 'scheduled currentTime:', scheduledCurrentTime, 'nextRange start:', nextRange.start(0)); // only seek if we still have not played
+
+      this.tech_.setCurrentTime(nextRange.start(0) + TIME_FUDGE_FACTOR);
+      this.tech_.trigger({
+        type: 'usage',
+        name: 'vhs-gap-skip'
+      });
+    }
+    gapFromVideoUnderflow_(buffered, currentTime) {
+      // At least in Chrome, if there is a gap in the video buffer, the audio will continue
+      // playing for ~3 seconds after the video gap starts. This is done to account for
+      // video buffer underflow/underrun (note that this is not done when there is audio
+      // buffer underflow/underrun -- in that case the video will stop as soon as it
+      // encounters the gap, as audio stalls are more noticeable/jarring to a user than
+      // video stalls). The player's time will reflect the playthrough of audio, so the
+      // time will appear as if we are in a buffered region, even if we are stuck in a
+      // "gap."
+      //
+      // Example:
+      // video buffer:   0 => 10.1, 10.2 => 20
+      // audio buffer:   0 => 20
+      // overall buffer: 0 => 10.1, 10.2 => 20
+      // current time: 13
+      //
+      // Chrome's video froze at 10 seconds, where the video buffer encountered the gap,
+      // however, the audio continued playing until it reached ~3 seconds past the gap
+      // (13 seconds), at which point it stops as well. Since current time is past the
+      // gap, findNextRange will return no ranges.
+      //
+      // To check for this issue, we see if there is a gap that starts somewhere within
+      // a 3 second range (3 seconds +/- 1 second) back from our current time.
+      const gaps = findGaps(buffered);
+      for (let i = 0; i < gaps.length; i++) {
+        const start = gaps.start(i);
+        const end = gaps.end(i); // gap is starts no more than 4 seconds back
+
+        if (currentTime - start < 4 && currentTime - start > 2) {
+          return {
+            start,
+            end
+          };
+        }
+      }
+      return null;
+    }
+  }
+  const defaultOptions = {
+    errorInterval: 30,
+    getSource(next) {
+      const tech = this.tech({
+        IWillNotUseThisInPlugins: true
+      });
+      const sourceObj = tech.currentSource_ || this.currentSource();
+      return next(sourceObj);
+    }
+  };
+  /**
+   * Main entry point for the plugin
+   *
+   * @param {Player} player a reference to a videojs Player instance
+   * @param {Object} [options] an object with plugin options
+   * @private
+   */
+
+  const initPlugin = function (player, options) {
+    let lastCalled = 0;
+    let seekTo = 0;
+    const localOptions = merge(defaultOptions, options);
+    player.ready(() => {
+      player.trigger({
+        type: 'usage',
+        name: 'vhs-error-reload-initialized'
+      });
+    });
+    /**
+     * Player modifications to perform that must wait until `loadedmetadata`
+     * has been triggered
+     *
+     * @private
+     */
+
+    const loadedMetadataHandler = function () {
+      if (seekTo) {
+        player.currentTime(seekTo);
+      }
+    };
+    /**
+     * Set the source on the player element, play, and seek if necessary
+     *
+     * @param {Object} sourceObj An object specifying the source url and mime-type to play
+     * @private
+     */
+
+    const setSource = function (sourceObj) {
+      if (sourceObj === null || sourceObj === undefined) {
+        return;
+      }
+      seekTo = player.duration() !== Infinity && player.currentTime() || 0;
+      player.one('loadedmetadata', loadedMetadataHandler);
+      player.src(sourceObj);
+      player.trigger({
+        type: 'usage',
+        name: 'vhs-error-reload'
+      });
+      player.play();
+    };
+    /**
+     * Attempt to get a source from either the built-in getSource function
+     * or a custom function provided via the options
+     *
+     * @private
+     */
+
+    const errorHandler = function () {
+      // Do not attempt to reload the source if a source-reload occurred before
+      // 'errorInterval' time has elapsed since the last source-reload
+      if (Date.now() - lastCalled < localOptions.errorInterval * 1000) {
+        player.trigger({
+          type: 'usage',
+          name: 'vhs-error-reload-canceled'
+        });
+        return;
+      }
+      if (!localOptions.getSource || typeof localOptions.getSource !== 'function') {
+        videojs.log.error('ERROR: reloadSourceOnError - The option getSource must be a function!');
+        return;
+      }
+      lastCalled = Date.now();
+      return localOptions.getSource.call(player, setSource);
+    };
+    /**
+     * Unbind any event handlers that were bound by the plugin
+     *
+     * @private
+     */
+
+    const cleanupEvents = function () {
+      player.off('loadedmetadata', loadedMetadataHandler);
+      player.off('error', errorHandler);
+      player.off('dispose', cleanupEvents);
+    };
+    /**
+     * Cleanup before re-initializing the plugin
+     *
+     * @param {Object} [newOptions] an object with plugin options
+     * @private
+     */
+
+    const reinitPlugin = function (newOptions) {
+      cleanupEvents();
+      initPlugin(player, newOptions);
+    };
+    player.on('error', errorHandler);
+    player.on('dispose', cleanupEvents); // Overwrite the plugin function so that we can correctly cleanup before
+    // initializing the plugin
+
+    player.reloadSourceOnError = reinitPlugin;
+  };
+  /**
+   * Reload the source when an error is detected as long as there
+   * wasn't an error previously within the last 30 seconds
+   *
+   * @param {Object} [options] an object with plugin options
+   */
+
+  const reloadSourceOnError = function (options) {
+    initPlugin(this, options);
+  };
+  var version$4 = "3.12.1";
+  var version$3 = "7.0.3";
+  var version$2 = "1.3.0";
+  var version$1 = "7.1.0";
+  var version = "4.0.1";
+
+  /**
+   * @file videojs-http-streaming.js
+   *
+   * The main file for the VHS project.
+   * License: https://github.com/videojs/videojs-http-streaming/blob/main/LICENSE
+   */
+  const Vhs = {
+    PlaylistLoader,
+    Playlist,
+    utils,
+    STANDARD_PLAYLIST_SELECTOR: lastBandwidthSelector,
+    INITIAL_PLAYLIST_SELECTOR: lowestBitrateCompatibleVariantSelector,
+    lastBandwidthSelector,
+    movingAverageBandwidthSelector,
+    comparePlaylistBandwidth,
+    comparePlaylistResolution,
+    xhr: xhrFactory()
+  }; // Define getter/setters for config properties
+
+  Object.keys(Config).forEach(prop => {
+    Object.defineProperty(Vhs, prop, {
+      get() {
+        videojs.log.warn(`using Vhs.${prop} is UNSAFE be sure you know what you are doing`);
+        return Config[prop];
+      },
+      set(value) {
+        videojs.log.warn(`using Vhs.${prop} is UNSAFE be sure you know what you are doing`);
+        if (typeof value !== 'number' || value < 0) {
+          videojs.log.warn(`value of Vhs.${prop} must be greater than or equal to 0`);
+          return;
+        }
+        Config[prop] = value;
+      }
+    });
+  });
+  const LOCAL_STORAGE_KEY = 'videojs-vhs';
+  /**
+   * Updates the selectedIndex of the QualityLevelList when a mediachange happens in vhs.
+   *
+   * @param {QualityLevelList} qualityLevels The QualityLevelList to update.
+   * @param {PlaylistLoader} playlistLoader PlaylistLoader containing the new media info.
+   * @function handleVhsMediaChange
+   */
+
+  const handleVhsMediaChange = function (qualityLevels, playlistLoader) {
+    const newPlaylist = playlistLoader.media();
+    let selectedIndex = -1;
+    for (let i = 0; i < qualityLevels.length; i++) {
+      if (qualityLevels[i].id === newPlaylist.id) {
+        selectedIndex = i;
+        break;
+      }
+    }
+    qualityLevels.selectedIndex_ = selectedIndex;
+    qualityLevels.trigger({
+      selectedIndex,
+      type: 'change'
+    });
+  };
+  /**
+   * Adds quality levels to list once playlist metadata is available
+   *
+   * @param {QualityLevelList} qualityLevels The QualityLevelList to attach events to.
+   * @param {Object} vhs Vhs object to listen to for media events.
+   * @function handleVhsLoadedMetadata
+   */
+
+  const handleVhsLoadedMetadata = function (qualityLevels, vhs) {
+    vhs.representations().forEach(rep => {
+      qualityLevels.addQualityLevel(rep);
+    });
+    handleVhsMediaChange(qualityLevels, vhs.playlists);
+  }; // VHS is a source handler, not a tech. Make sure attempts to use it
+  // as one do not cause exceptions.
+
+  Vhs.canPlaySource = function () {
+    return videojs.log.warn('VHS is no longer a tech. Please remove it from ' + 'your player\'s techOrder.');
+  };
+  const emeKeySystems = (keySystemOptions, mainPlaylist, audioPlaylist) => {
+    if (!keySystemOptions) {
+      return keySystemOptions;
+    }
+    let codecs = {};
+    if (mainPlaylist && mainPlaylist.attributes && mainPlaylist.attributes.CODECS) {
+      codecs = unwrapCodecList(parseCodecs(mainPlaylist.attributes.CODECS));
+    }
+    if (audioPlaylist && audioPlaylist.attributes && audioPlaylist.attributes.CODECS) {
+      codecs.audio = audioPlaylist.attributes.CODECS;
+    }
+    const videoContentType = getMimeForCodec(codecs.video);
+    const audioContentType = getMimeForCodec(codecs.audio); // upsert the content types based on the selected playlist
+
+    const keySystemContentTypes = {};
+    for (const keySystem in keySystemOptions) {
+      keySystemContentTypes[keySystem] = {};
+      if (audioContentType) {
+        keySystemContentTypes[keySystem].audioContentType = audioContentType;
+      }
+      if (videoContentType) {
+        keySystemContentTypes[keySystem].videoContentType = videoContentType;
+      } // Default to using the video playlist's PSSH even though they may be different, as
+      // videojs-contrib-eme will only accept one in the options.
+      //
+      // This shouldn't be an issue for most cases as early intialization will handle all
+      // unique PSSH values, and if they aren't, then encrypted events should have the
+      // specific information needed for the unique license.
+
+      if (mainPlaylist.contentProtection && mainPlaylist.contentProtection[keySystem] && mainPlaylist.contentProtection[keySystem].pssh) {
+        keySystemContentTypes[keySystem].pssh = mainPlaylist.contentProtection[keySystem].pssh;
+      } // videojs-contrib-eme accepts the option of specifying: 'com.some.cdm': 'url'
+      // so we need to prevent overwriting the URL entirely
+
+      if (typeof keySystemOptions[keySystem] === 'string') {
+        keySystemContentTypes[keySystem].url = keySystemOptions[keySystem];
+      }
+    }
+    return merge(keySystemOptions, keySystemContentTypes);
+  };
+  /**
+   * @typedef {Object} KeySystems
+   *
+   * keySystems configuration for https://github.com/videojs/videojs-contrib-eme
+   * Note: not all options are listed here.
+   *
+   * @property {Uint8Array} [pssh]
+   *           Protection System Specific Header
+   */
+
+  /**
+   * Goes through all the playlists and collects an array of KeySystems options objects
+   * containing each playlist's keySystems and their pssh values, if available.
+   *
+   * @param {Object[]} playlists
+   *        The playlists to look through
+   * @param {string[]} keySystems
+   *        The keySystems to collect pssh values for
+   *
+   * @return {KeySystems[]}
+   *         An array of KeySystems objects containing available key systems and their
+   *         pssh values
+   */
+
+  const getAllPsshKeySystemsOptions = (playlists, keySystems) => {
+    return playlists.reduce((keySystemsArr, playlist) => {
+      if (!playlist.contentProtection) {
+        return keySystemsArr;
+      }
+      const keySystemsOptions = keySystems.reduce((keySystemsObj, keySystem) => {
+        const keySystemOptions = playlist.contentProtection[keySystem];
+        if (keySystemOptions && keySystemOptions.pssh) {
+          keySystemsObj[keySystem] = {
+            pssh: keySystemOptions.pssh
+          };
+        }
+        return keySystemsObj;
+      }, {});
+      if (Object.keys(keySystemsOptions).length) {
+        keySystemsArr.push(keySystemsOptions);
+      }
+      return keySystemsArr;
+    }, []);
+  };
+  /**
+   * Returns a promise that waits for the
+   * [eme plugin](https://github.com/videojs/videojs-contrib-eme) to create a key session.
+   *
+   * Works around https://bugs.chromium.org/p/chromium/issues/detail?id=895449 in non-IE11
+   * browsers.
+   *
+   * As per the above ticket, this is particularly important for Chrome, where, if
+   * unencrypted content is appended before encrypted content and the key session has not
+   * been created, a MEDIA_ERR_DECODE will be thrown once the encrypted content is reached
+   * during playback.
+   *
+   * @param {Object} player
+   *        The player instance
+   * @param {Object[]} sourceKeySystems
+   *        The key systems options from the player source
+   * @param {Object} [audioMedia]
+   *        The active audio media playlist (optional)
+   * @param {Object[]} mainPlaylists
+   *        The playlists found on the main playlist object
+   *
+   * @return {Object}
+   *         Promise that resolves when the key session has been created
+   */
+
+  const waitForKeySessionCreation = ({
+    player,
+    sourceKeySystems,
+    audioMedia,
+    mainPlaylists
+  }) => {
+    if (!player.eme.initializeMediaKeys) {
+      return Promise.resolve();
+    } // TODO should all audio PSSH values be initialized for DRM?
+    //
+    // All unique video rendition pssh values are initialized for DRM, but here only
+    // the initial audio playlist license is initialized. In theory, an encrypted
+    // event should be fired if the user switches to an alternative audio playlist
+    // where a license is required, but this case hasn't yet been tested. In addition, there
+    // may be many alternate audio playlists unlikely to be used (e.g., multiple different
+    // languages).
+
+    const playlists = audioMedia ? mainPlaylists.concat([audioMedia]) : mainPlaylists;
+    const keySystemsOptionsArr = getAllPsshKeySystemsOptions(playlists, Object.keys(sourceKeySystems));
+    const initializationFinishedPromises = [];
+    const keySessionCreatedPromises = []; // Since PSSH values are interpreted as initData, EME will dedupe any duplicates. The
+    // only place where it should not be deduped is for ms-prefixed APIs, but
+    // the existence of modern EME APIs in addition to
+    // ms-prefixed APIs on Edge should prevent this from being a concern.
+    // initializeMediaKeys also won't use the webkit-prefixed APIs.
+
+    keySystemsOptionsArr.forEach(keySystemsOptions => {
+      keySessionCreatedPromises.push(new Promise((resolve, reject) => {
+        player.tech_.one('keysessioncreated', resolve);
+      }));
+      initializationFinishedPromises.push(new Promise((resolve, reject) => {
+        player.eme.initializeMediaKeys({
+          keySystems: keySystemsOptions
+        }, err => {
+          if (err) {
+            reject(err);
+            return;
+          }
+          resolve();
+        });
+      }));
+    }); // The reasons Promise.race is chosen over Promise.any:
+    //
+    // * Promise.any is only available in Safari 14+.
+    // * None of these promises are expected to reject. If they do reject, it might be
+    //   better here for the race to surface the rejection, rather than mask it by using
+    //   Promise.any.
+
+    return Promise.race([
+    // If a session was previously created, these will all finish resolving without
+    // creating a new session, otherwise it will take until the end of all license
+    // requests, which is why the key session check is used (to make setup much faster).
+    Promise.all(initializationFinishedPromises),
+    // Once a single session is created, the browser knows DRM will be used.
+    Promise.race(keySessionCreatedPromises)]);
+  };
+  /**
+   * If the [eme](https://github.com/videojs/videojs-contrib-eme) plugin is available, and
+   * there are keySystems on the source, sets up source options to prepare the source for
+   * eme.
+   *
+   * @param {Object} player
+   *        The player instance
+   * @param {Object[]} sourceKeySystems
+   *        The key systems options from the player source
+   * @param {Object} media
+   *        The active media playlist
+   * @param {Object} [audioMedia]
+   *        The active audio media playlist (optional)
+   *
+   * @return {boolean}
+   *         Whether or not options were configured and EME is available
+   */
+
+  const setupEmeOptions = ({
+    player,
+    sourceKeySystems,
+    media,
+    audioMedia
+  }) => {
+    const sourceOptions = emeKeySystems(sourceKeySystems, media, audioMedia);
+    if (!sourceOptions) {
+      return false;
+    }
+    player.currentSource().keySystems = sourceOptions; // eme handles the rest of the setup, so if it is missing
+    // do nothing.
+
+    if (sourceOptions && !player.eme) {
+      videojs.log.warn('DRM encrypted source cannot be decrypted without a DRM plugin');
+      return false;
+    }
+    return true;
+  };
+  const getVhsLocalStorage = () => {
+    if (!window.localStorage) {
+      return null;
+    }
+    const storedObject = window.localStorage.getItem(LOCAL_STORAGE_KEY);
+    if (!storedObject) {
+      return null;
+    }
+    try {
+      return JSON.parse(storedObject);
+    } catch (e) {
+      // someone may have tampered with the value
+      return null;
+    }
+  };
+  const updateVhsLocalStorage = options => {
+    if (!window.localStorage) {
+      return false;
+    }
+    let objectToStore = getVhsLocalStorage();
+    objectToStore = objectToStore ? merge(objectToStore, options) : options;
+    try {
+      window.localStorage.setItem(LOCAL_STORAGE_KEY, JSON.stringify(objectToStore));
+    } catch (e) {
+      // Throws if storage is full (e.g., always on iOS 5+ Safari private mode, where
+      // storage is set to 0).
+      // https://developer.mozilla.org/en-US/docs/Web/API/Storage/setItem#Exceptions
+      // No need to perform any operation.
+      return false;
+    }
+    return objectToStore;
+  };
+  /**
+   * Parses VHS-supported media types from data URIs. See
+   * https://developer.mozilla.org/en-US/docs/Web/HTTP/Basics_of_HTTP/Data_URIs
+   * for information on data URIs.
+   *
+   * @param {string} dataUri
+   *        The data URI
+   *
+   * @return {string|Object}
+   *         The parsed object/string, or the original string if no supported media type
+   *         was found
+   */
+
+  const expandDataUri = dataUri => {
+    if (dataUri.toLowerCase().indexOf('data:application/vnd.videojs.vhs+json,') === 0) {
+      return JSON.parse(dataUri.substring(dataUri.indexOf(',') + 1));
+    } // no known case for this data URI, return the string as-is
+
+    return dataUri;
+  };
+  /**
+   * Adds a request hook to an xhr object
+   *
+   * @param {Object} xhr object to add the onRequest hook to
+   * @param {function} callback hook function for an xhr request
+   */
+
+  const addOnRequestHook = (xhr, callback) => {
+    if (!xhr._requestCallbackSet) {
+      xhr._requestCallbackSet = new Set();
+    }
+    xhr._requestCallbackSet.add(callback);
+  };
+  /**
+   * Adds a response hook to an xhr object
+   *
+   * @param {Object} xhr object to add the onResponse hook to
+   * @param {function} callback hook function for an xhr response
+   */
+
+  const addOnResponseHook = (xhr, callback) => {
+    if (!xhr._responseCallbackSet) {
+      xhr._responseCallbackSet = new Set();
+    }
+    xhr._responseCallbackSet.add(callback);
+  };
+  /**
+   * Removes a request hook on an xhr object, deletes the onRequest set if empty.
+   *
+   * @param {Object} xhr object to remove the onRequest hook from
+   * @param {function} callback hook function to remove
+   */
+
+  const removeOnRequestHook = (xhr, callback) => {
+    if (!xhr._requestCallbackSet) {
+      return;
+    }
+    xhr._requestCallbackSet.delete(callback);
+    if (!xhr._requestCallbackSet.size) {
+      delete xhr._requestCallbackSet;
+    }
+  };
+  /**
+   * Removes a response hook on an xhr object, deletes the onResponse set if empty.
+   *
+   * @param {Object} xhr object to remove the onResponse hook from
+   * @param {function} callback hook function to remove
+   */
+
+  const removeOnResponseHook = (xhr, callback) => {
+    if (!xhr._responseCallbackSet) {
+      return;
+    }
+    xhr._responseCallbackSet.delete(callback);
+    if (!xhr._responseCallbackSet.size) {
+      delete xhr._responseCallbackSet;
+    }
+  };
+  /**
+   * Whether the browser has built-in HLS support.
+   */
+
+  Vhs.supportsNativeHls = function () {
+    if (!document || !document.createElement) {
+      return false;
+    }
+    const video = document.createElement('video'); // native HLS is definitely not supported if HTML5 video isn't
+
+    if (!videojs.getTech('Html5').isSupported()) {
+      return false;
+    } // HLS manifests can go by many mime-types
+
+    const canPlay = [
+    // Apple santioned
+    'application/vnd.apple.mpegurl',
+    // Apple sanctioned for backwards compatibility
+    'audio/mpegurl',
+    // Very common
+    'audio/x-mpegurl',
+    // Very common
+    'application/x-mpegurl',
+    // Included for completeness
+    'video/x-mpegurl', 'video/mpegurl', 'application/mpegurl'];
+    return canPlay.some(function (canItPlay) {
+      return /maybe|probably/i.test(video.canPlayType(canItPlay));
+    });
+  }();
+  Vhs.supportsNativeDash = function () {
+    if (!document || !document.createElement || !videojs.getTech('Html5').isSupported()) {
+      return false;
+    }
+    return /maybe|probably/i.test(document.createElement('video').canPlayType('application/dash+xml'));
+  }();
+  Vhs.supportsTypeNatively = type => {
+    if (type === 'hls') {
+      return Vhs.supportsNativeHls;
+    }
+    if (type === 'dash') {
+      return Vhs.supportsNativeDash;
+    }
+    return false;
+  };
+  /**
+   * VHS is a source handler, not a tech. Make sure attempts to use it
+   * as one do not cause exceptions.
+   */
+
+  Vhs.isSupported = function () {
+    return videojs.log.warn('VHS is no longer a tech. Please remove it from ' + 'your player\'s techOrder.');
+  };
+  /**
+   * A global function for setting an onRequest hook
+   *
+   * @param {function} callback for request modifiction
+   */
+
+  Vhs.xhr.onRequest = function (callback) {
+    addOnRequestHook(Vhs.xhr, callback);
+  };
+  /**
+   * A global function for setting an onResponse hook
+   *
+   * @param {callback} callback for response data retrieval
+   */
+
+  Vhs.xhr.onResponse = function (callback) {
+    addOnResponseHook(Vhs.xhr, callback);
+  };
+  /**
+   * Deletes a global onRequest callback if it exists
+   *
+   * @param {function} callback to delete from the global set
+   */
+
+  Vhs.xhr.offRequest = function (callback) {
+    removeOnRequestHook(Vhs.xhr, callback);
+  };
+  /**
+   * Deletes a global onResponse callback if it exists
+   *
+   * @param {function} callback to delete from the global set
+   */
+
+  Vhs.xhr.offResponse = function (callback) {
+    removeOnResponseHook(Vhs.xhr, callback);
+  };
+  const Component = videojs.getComponent('Component');
+  /**
+   * The Vhs Handler object, where we orchestrate all of the parts
+   * of VHS to interact with video.js
+   *
+   * @class VhsHandler
+   * @extends videojs.Component
+   * @param {Object} source the soruce object
+   * @param {Tech} tech the parent tech object
+   * @param {Object} options optional and required options
+   */
+
+  class VhsHandler extends Component {
+    constructor(source, tech, options) {
+      super(tech, options.vhs); // if a tech level `initialBandwidth` option was passed
+      // use that over the VHS level `bandwidth` option
+
+      if (typeof options.initialBandwidth === 'number') {
+        this.options_.bandwidth = options.initialBandwidth;
+      }
+      this.logger_ = logger('VhsHandler'); // we need access to the player in some cases,
+      // so, get it from Video.js via the `playerId`
+
+      if (tech.options_ && tech.options_.playerId) {
+        const _player = videojs.getPlayer(tech.options_.playerId);
+        this.player_ = _player;
+      }
+      this.tech_ = tech;
+      this.source_ = source;
+      this.stats = {};
+      this.ignoreNextSeekingEvent_ = false;
+      this.setOptions_();
+      if (this.options_.overrideNative && tech.overrideNativeAudioTracks && tech.overrideNativeVideoTracks) {
+        tech.overrideNativeAudioTracks(true);
+        tech.overrideNativeVideoTracks(true);
+      } else if (this.options_.overrideNative && (tech.featuresNativeVideoTracks || tech.featuresNativeAudioTracks)) {
+        // overriding native VHS only works if audio tracks have been emulated
+        // error early if we're misconfigured
+        throw new Error('Overriding native VHS requires emulated tracks. ' + 'See https://git.io/vMpjB');
+      } // listen for fullscreenchange events for this player so that we
+      // can adjust our quality selection quickly
+
+      this.on(document, ['fullscreenchange', 'webkitfullscreenchange', 'mozfullscreenchange', 'MSFullscreenChange'], event => {
+        const fullscreenElement = document.fullscreenElement || document.webkitFullscreenElement || document.mozFullScreenElement || document.msFullscreenElement;
+        if (fullscreenElement && fullscreenElement.contains(this.tech_.el())) {
+          this.playlistController_.fastQualityChange_();
+        } else {
+          // When leaving fullscreen, since the in page pixel dimensions should be smaller
+          // than full screen, see if there should be a rendition switch down to preserve
+          // bandwidth.
+          this.playlistController_.checkABR_();
+        }
+      });
+      this.on(this.tech_, 'seeking', function () {
+        if (this.ignoreNextSeekingEvent_) {
+          this.ignoreNextSeekingEvent_ = false;
+          return;
+        }
+        this.setCurrentTime(this.tech_.currentTime());
+      });
+      this.on(this.tech_, 'error', function () {
+        // verify that the error was real and we are loaded
+        // enough to have pc loaded.
+        if (this.tech_.error() && this.playlistController_) {
+          this.playlistController_.pauseLoading();
+        }
+      });
+      this.on(this.tech_, 'play', this.play);
+    }
+    /**
+     * Set VHS options based on options from configuration, as well as partial
+     * options to be passed at a later time.
+     *
+     * @param {Object} options A partial chunk of config options
+     */
+
+    setOptions_(options = {}) {
+      this.options_ = merge(this.options_, options); // defaults
+
+      this.options_.withCredentials = this.options_.withCredentials || false;
+      this.options_.limitRenditionByPlayerDimensions = this.options_.limitRenditionByPlayerDimensions === false ? false : true;
+      this.options_.useDevicePixelRatio = this.options_.useDevicePixelRatio || false;
+      this.options_.useBandwidthFromLocalStorage = typeof this.source_.useBandwidthFromLocalStorage !== 'undefined' ? this.source_.useBandwidthFromLocalStorage : this.options_.useBandwidthFromLocalStorage || false;
+      this.options_.useForcedSubtitles = this.options_.useForcedSubtitles || false;
+      this.options_.useNetworkInformationApi = this.options_.useNetworkInformationApi || false;
+      this.options_.useDtsForTimestampOffset = this.options_.useDtsForTimestampOffset || false;
+      this.options_.customTagParsers = this.options_.customTagParsers || [];
+      this.options_.customTagMappers = this.options_.customTagMappers || [];
+      this.options_.cacheEncryptionKeys = this.options_.cacheEncryptionKeys || false;
+      this.options_.llhls = this.options_.llhls === false ? false : true;
+      this.options_.bufferBasedABR = this.options_.bufferBasedABR || false;
+      if (typeof this.options_.playlistExclusionDuration !== 'number') {
+        this.options_.playlistExclusionDuration = 60;
+      }
+      if (typeof this.options_.bandwidth !== 'number') {
+        if (this.options_.useBandwidthFromLocalStorage) {
+          const storedObject = getVhsLocalStorage();
+          if (storedObject && storedObject.bandwidth) {
+            this.options_.bandwidth = storedObject.bandwidth;
+            this.tech_.trigger({
+              type: 'usage',
+              name: 'vhs-bandwidth-from-local-storage'
+            });
+          }
+          if (storedObject && storedObject.throughput) {
+            this.options_.throughput = storedObject.throughput;
+            this.tech_.trigger({
+              type: 'usage',
+              name: 'vhs-throughput-from-local-storage'
+            });
+          }
+        }
+      } // if bandwidth was not set by options or pulled from local storage, start playlist
+      // selection at a reasonable bandwidth
+
+      if (typeof this.options_.bandwidth !== 'number') {
+        this.options_.bandwidth = Config.INITIAL_BANDWIDTH;
+      } // If the bandwidth number is unchanged from the initial setting
+      // then this takes precedence over the enableLowInitialPlaylist option
+
+      this.options_.enableLowInitialPlaylist = this.options_.enableLowInitialPlaylist && this.options_.bandwidth === Config.INITIAL_BANDWIDTH; // grab options passed to player.src
+
+      ['withCredentials', 'useDevicePixelRatio', 'customPixelRatio', 'limitRenditionByPlayerDimensions', 'bandwidth', 'customTagParsers', 'customTagMappers', 'cacheEncryptionKeys', 'playlistSelector', 'initialPlaylistSelector', 'bufferBasedABR', 'liveRangeSafeTimeDelta', 'llhls', 'useForcedSubtitles', 'useNetworkInformationApi', 'useDtsForTimestampOffset', 'exactManifestTimings', 'leastPixelDiffSelector'].forEach(option => {
+        if (typeof this.source_[option] !== 'undefined') {
+          this.options_[option] = this.source_[option];
+        }
+      });
+      this.limitRenditionByPlayerDimensions = this.options_.limitRenditionByPlayerDimensions;
+      this.useDevicePixelRatio = this.options_.useDevicePixelRatio;
+      const customPixelRatio = this.options_.customPixelRatio; // Ensure the custom pixel ratio is a number greater than or equal to 0
+
+      if (typeof customPixelRatio === 'number' && customPixelRatio >= 0) {
+        this.customPixelRatio = customPixelRatio;
+      }
+    } // alias for public method to set options
+
+    setOptions(options = {}) {
+      this.setOptions_(options);
+    }
+    /**
+     * called when player.src gets called, handle a new source
+     *
+     * @param {Object} src the source object to handle
+     */
+
+    src(src, type) {
+      // do nothing if the src is falsey
+      if (!src) {
+        return;
+      }
+      this.setOptions_(); // add main playlist controller options
+
+      this.options_.src = expandDataUri(this.source_.src);
+      this.options_.tech = this.tech_;
+      this.options_.externVhs = Vhs;
+      this.options_.sourceType = simpleTypeFromSourceType(type); // Whenever we seek internally, we should update the tech
+
+      this.options_.seekTo = time => {
+        this.tech_.setCurrentTime(time);
+      };
+      this.playlistController_ = new PlaylistController(this.options_);
+      const playbackWatcherOptions = merge({
+        liveRangeSafeTimeDelta: SAFE_TIME_DELTA
+      }, this.options_, {
+        seekable: () => this.seekable(),
+        media: () => this.playlistController_.media(),
+        playlistController: this.playlistController_
+      });
+      this.playbackWatcher_ = new PlaybackWatcher(playbackWatcherOptions);
+      this.playlistController_.on('error', () => {
+        const player = videojs.players[this.tech_.options_.playerId];
+        let error = this.playlistController_.error;
+        if (typeof error === 'object' && !error.code) {
+          error.code = 3;
+        } else if (typeof error === 'string') {
+          error = {
+            message: error,
+            code: 3
+          };
+        }
+        player.error(error);
+      });
+      const defaultSelector = this.options_.bufferBasedABR ? Vhs.movingAverageBandwidthSelector(0.55) : Vhs.STANDARD_PLAYLIST_SELECTOR; // `this` in selectPlaylist should be the VhsHandler for backwards
+      // compatibility with < v2
+
+      this.playlistController_.selectPlaylist = this.selectPlaylist ? this.selectPlaylist.bind(this) : defaultSelector.bind(this);
+      this.playlistController_.selectInitialPlaylist = Vhs.INITIAL_PLAYLIST_SELECTOR.bind(this); // re-expose some internal objects for backwards compatibility with < v2
+
+      this.playlists = this.playlistController_.mainPlaylistLoader_;
+      this.mediaSource = this.playlistController_.mediaSource; // Proxy assignment of some properties to the main playlist
+      // controller. Using a custom property for backwards compatibility
+      // with < v2
+
+      Object.defineProperties(this, {
+        selectPlaylist: {
+          get() {
+            return this.playlistController_.selectPlaylist;
+          },
+          set(selectPlaylist) {
+            this.playlistController_.selectPlaylist = selectPlaylist.bind(this);
+          }
+        },
+        throughput: {
+          get() {
+            return this.playlistController_.mainSegmentLoader_.throughput.rate;
+          },
+          set(throughput) {
+            this.playlistController_.mainSegmentLoader_.throughput.rate = throughput; // By setting `count` to 1 the throughput value becomes the starting value
+            // for the cumulative average
+
+            this.playlistController_.mainSegmentLoader_.throughput.count = 1;
+          }
+        },
+        bandwidth: {
+          get() {
+            let playerBandwidthEst = this.playlistController_.mainSegmentLoader_.bandwidth;
+            const networkInformation = window.navigator.connection || window.navigator.mozConnection || window.navigator.webkitConnection;
+            const tenMbpsAsBitsPerSecond = 10e6;
+            if (this.options_.useNetworkInformationApi && networkInformation) {
+              // downlink returns Mbps
+              // https://developer.mozilla.org/en-US/docs/Web/API/NetworkInformation/downlink
+              const networkInfoBandwidthEstBitsPerSec = networkInformation.downlink * 1000 * 1000; // downlink maxes out at 10 Mbps. In the event that both networkInformationApi and the player
+              // estimate a bandwidth greater than 10 Mbps, use the larger of the two estimates to ensure that
+              // high quality streams are not filtered out.
+
+              if (networkInfoBandwidthEstBitsPerSec >= tenMbpsAsBitsPerSecond && playerBandwidthEst >= tenMbpsAsBitsPerSecond) {
+                playerBandwidthEst = Math.max(playerBandwidthEst, networkInfoBandwidthEstBitsPerSec);
+              } else {
+                playerBandwidthEst = networkInfoBandwidthEstBitsPerSec;
+              }
+            }
+            return playerBandwidthEst;
+          },
+          set(bandwidth) {
+            this.playlistController_.mainSegmentLoader_.bandwidth = bandwidth; // setting the bandwidth manually resets the throughput counter
+            // `count` is set to zero that current value of `rate` isn't included
+            // in the cumulative average
+
+            this.playlistController_.mainSegmentLoader_.throughput = {
+              rate: 0,
+              count: 0
+            };
+          }
+        },
+        /**
+         * `systemBandwidth` is a combination of two serial processes bit-rates. The first
+         * is the network bitrate provided by `bandwidth` and the second is the bitrate of
+         * the entire process after that - decryption, transmuxing, and appending - provided
+         * by `throughput`.
+         *
+         * Since the two process are serial, the overall system bandwidth is given by:
+         *   sysBandwidth = 1 / (1 / bandwidth + 1 / throughput)
+         */
+        systemBandwidth: {
+          get() {
+            const invBandwidth = 1 / (this.bandwidth || 1);
+            let invThroughput;
+            if (this.throughput > 0) {
+              invThroughput = 1 / this.throughput;
+            } else {
+              invThroughput = 0;
+            }
+            const systemBitrate = Math.floor(1 / (invBandwidth + invThroughput));
+            return systemBitrate;
+          },
+          set() {
+            videojs.log.error('The "systemBandwidth" property is read-only');
+          }
+        }
+      });
+      if (this.options_.bandwidth) {
+        this.bandwidth = this.options_.bandwidth;
+      }
+      if (this.options_.throughput) {
+        this.throughput = this.options_.throughput;
+      }
+      Object.defineProperties(this.stats, {
+        bandwidth: {
+          get: () => this.bandwidth || 0,
+          enumerable: true
+        },
+        mediaRequests: {
+          get: () => this.playlistController_.mediaRequests_() || 0,
+          enumerable: true
+        },
+        mediaRequestsAborted: {
+          get: () => this.playlistController_.mediaRequestsAborted_() || 0,
+          enumerable: true
+        },
+        mediaRequestsTimedout: {
+          get: () => this.playlistController_.mediaRequestsTimedout_() || 0,
+          enumerable: true
+        },
+        mediaRequestsErrored: {
+          get: () => this.playlistController_.mediaRequestsErrored_() || 0,
+          enumerable: true
+        },
+        mediaTransferDuration: {
+          get: () => this.playlistController_.mediaTransferDuration_() || 0,
+          enumerable: true
+        },
+        mediaBytesTransferred: {
+          get: () => this.playlistController_.mediaBytesTransferred_() || 0,
+          enumerable: true
+        },
+        mediaSecondsLoaded: {
+          get: () => this.playlistController_.mediaSecondsLoaded_() || 0,
+          enumerable: true
+        },
+        mediaAppends: {
+          get: () => this.playlistController_.mediaAppends_() || 0,
+          enumerable: true
+        },
+        mainAppendsToLoadedData: {
+          get: () => this.playlistController_.mainAppendsToLoadedData_() || 0,
+          enumerable: true
+        },
+        audioAppendsToLoadedData: {
+          get: () => this.playlistController_.audioAppendsToLoadedData_() || 0,
+          enumerable: true
+        },
+        appendsToLoadedData: {
+          get: () => this.playlistController_.appendsToLoadedData_() || 0,
+          enumerable: true
+        },
+        timeToLoadedData: {
+          get: () => this.playlistController_.timeToLoadedData_() || 0,
+          enumerable: true
+        },
+        buffered: {
+          get: () => timeRangesToArray(this.tech_.buffered()),
+          enumerable: true
+        },
+        currentTime: {
+          get: () => this.tech_.currentTime(),
+          enumerable: true
+        },
+        currentSource: {
+          get: () => this.tech_.currentSource_,
+          enumerable: true
+        },
+        currentTech: {
+          get: () => this.tech_.name_,
+          enumerable: true
+        },
+        duration: {
+          get: () => this.tech_.duration(),
+          enumerable: true
+        },
+        main: {
+          get: () => this.playlists.main,
+          enumerable: true
+        },
+        playerDimensions: {
+          get: () => this.tech_.currentDimensions(),
+          enumerable: true
+        },
+        seekable: {
+          get: () => timeRangesToArray(this.tech_.seekable()),
+          enumerable: true
+        },
+        timestamp: {
+          get: () => Date.now(),
+          enumerable: true
+        },
+        videoPlaybackQuality: {
+          get: () => this.tech_.getVideoPlaybackQuality(),
+          enumerable: true
+        }
+      });
+      this.tech_.one('canplay', this.playlistController_.setupFirstPlay.bind(this.playlistController_));
+      this.tech_.on('bandwidthupdate', () => {
+        if (this.options_.useBandwidthFromLocalStorage) {
+          updateVhsLocalStorage({
+            bandwidth: this.bandwidth,
+            throughput: Math.round(this.throughput)
+          });
+        }
+      });
+      this.playlistController_.on('selectedinitialmedia', () => {
+        // Add the manual rendition mix-in to VhsHandler
+        renditionSelectionMixin(this);
+      });
+      this.playlistController_.sourceUpdater_.on('createdsourcebuffers', () => {
+        this.setupEme_();
+      }); // the bandwidth of the primary segment loader is our best
+      // estimate of overall bandwidth
+
+      this.on(this.playlistController_, 'progress', function () {
+        this.tech_.trigger('progress');
+      }); // In the live case, we need to ignore the very first `seeking` event since
+      // that will be the result of the seek-to-live behavior
+
+      this.on(this.playlistController_, 'firstplay', function () {
+        this.ignoreNextSeekingEvent_ = true;
+      });
+      this.setupQualityLevels_(); // do nothing if the tech has been disposed already
+      // this can occur if someone sets the src in player.ready(), for instance
+
+      if (!this.tech_.el()) {
+        return;
+      }
+      this.mediaSourceUrl_ = window.URL.createObjectURL(this.playlistController_.mediaSource);
+      this.tech_.src(this.mediaSourceUrl_);
+    }
+    createKeySessions_() {
+      const audioPlaylistLoader = this.playlistController_.mediaTypes_.AUDIO.activePlaylistLoader;
+      this.logger_('waiting for EME key session creation');
+      waitForKeySessionCreation({
+        player: this.player_,
+        sourceKeySystems: this.source_.keySystems,
+        audioMedia: audioPlaylistLoader && audioPlaylistLoader.media(),
+        mainPlaylists: this.playlists.main.playlists
+      }).then(() => {
+        this.logger_('created EME key session');
+        this.playlistController_.sourceUpdater_.initializedEme();
+      }).catch(err => {
+        this.logger_('error while creating EME key session', err);
+        this.player_.error({
+          message: 'Failed to initialize media keys for EME',
+          code: 3,
+          metadata: {
+            errorType: videojs.Error.EMEKeySessionCreationError
+          }
+        });
+      });
+    }
+    handleWaitingForKey_() {
+      // If waitingforkey is fired, it's possible that the data that's necessary to retrieve
+      // the key is in the manifest. While this should've happened on initial source load, it
+      // may happen again in live streams where the keys change, and the manifest info
+      // reflects the update.
+      //
+      // Because videojs-contrib-eme compares the PSSH data we send to that of PSSH data it's
+      // already requested keys for, we don't have to worry about this generating extraneous
+      // requests.
+      this.logger_('waitingforkey fired, attempting to create any new key sessions');
+      this.createKeySessions_();
+    }
+    /**
+     * If necessary and EME is available, sets up EME options and waits for key session
+     * creation.
+     *
+     * This function also updates the source updater so taht it can be used, as for some
+     * browsers, EME must be configured before content is appended (if appending unencrypted
+     * content before encrypted content).
+     */
+
+    setupEme_() {
+      const audioPlaylistLoader = this.playlistController_.mediaTypes_.AUDIO.activePlaylistLoader;
+      const didSetupEmeOptions = setupEmeOptions({
+        player: this.player_,
+        sourceKeySystems: this.source_.keySystems,
+        media: this.playlists.media(),
+        audioMedia: audioPlaylistLoader && audioPlaylistLoader.media()
+      });
+      this.player_.tech_.on('keystatuschange', e => {
+        this.playlistController_.updatePlaylistByKeyStatus(e.keyId, e.status);
+      });
+      this.handleWaitingForKey_ = this.handleWaitingForKey_.bind(this);
+      this.player_.tech_.on('waitingforkey', this.handleWaitingForKey_);
+      if (!didSetupEmeOptions) {
+        // If EME options were not set up, we've done all we could to initialize EME.
+        this.playlistController_.sourceUpdater_.initializedEme();
+        return;
+      }
+      this.createKeySessions_();
+    }
+    /**
+     * Initializes the quality levels and sets listeners to update them.
+     *
+     * @method setupQualityLevels_
+     * @private
+     */
+
+    setupQualityLevels_() {
+      const player = videojs.players[this.tech_.options_.playerId]; // if there isn't a player or there isn't a qualityLevels plugin
+      // or qualityLevels_ listeners have already been setup, do nothing.
+
+      if (!player || !player.qualityLevels || this.qualityLevels_) {
+        return;
+      }
+      this.qualityLevels_ = player.qualityLevels();
+      this.playlistController_.on('selectedinitialmedia', () => {
+        handleVhsLoadedMetadata(this.qualityLevels_, this);
+      });
+      this.playlists.on('mediachange', () => {
+        handleVhsMediaChange(this.qualityLevels_, this.playlists);
+      });
+    }
+    /**
+     * return the version
+     */
+
+    static version() {
+      return {
+        '@videojs/http-streaming': version$4,
+        'mux.js': version$3,
+        'mpd-parser': version$2,
+        'm3u8-parser': version$1,
+        'aes-decrypter': version
+      };
+    }
+    /**
+     * return the version
+     */
+
+    version() {
+      return this.constructor.version();
+    }
+    canChangeType() {
+      return SourceUpdater.canChangeType();
+    }
+    /**
+     * Begin playing the video.
+     */
+
+    play() {
+      this.playlistController_.play();
+    }
+    /**
+     * a wrapper around the function in PlaylistController
+     */
+
+    setCurrentTime(currentTime) {
+      this.playlistController_.setCurrentTime(currentTime);
+    }
+    /**
+     * a wrapper around the function in PlaylistController
+     */
+
+    duration() {
+      return this.playlistController_.duration();
+    }
+    /**
+     * a wrapper around the function in PlaylistController
+     */
+
+    seekable() {
+      return this.playlistController_.seekable();
+    }
+    /**
+     * Abort all outstanding work and cleanup.
+     */
+
+    dispose() {
+      if (this.playbackWatcher_) {
+        this.playbackWatcher_.dispose();
+      }
+      if (this.playlistController_) {
+        this.playlistController_.dispose();
+      }
+      if (this.qualityLevels_) {
+        this.qualityLevels_.dispose();
+      }
+      if (this.tech_ && this.tech_.vhs) {
+        delete this.tech_.vhs;
+      }
+      if (this.mediaSourceUrl_ && window.URL.revokeObjectURL) {
+        window.URL.revokeObjectURL(this.mediaSourceUrl_);
+        this.mediaSourceUrl_ = null;
+      }
+      if (this.tech_) {
+        this.tech_.off('waitingforkey', this.handleWaitingForKey_);
+      }
+      super.dispose();
+    }
+    convertToProgramTime(time, callback) {
+      return getProgramTime({
+        playlist: this.playlistController_.media(),
+        time,
+        callback
+      });
+    } // the player must be playing before calling this
+
+    seekToProgramTime(programTime, callback, pauseAfterSeek = true, retryCount = 2) {
+      return seekToProgramTime({
+        programTime,
+        playlist: this.playlistController_.media(),
+        retryCount,
+        pauseAfterSeek,
+        seekTo: this.options_.seekTo,
+        tech: this.options_.tech,
+        callback
+      });
+    }
+    /**
+     * Adds the onRequest, onResponse, offRequest and offResponse functions
+     * to the VhsHandler xhr Object.
+     */
+
+    setupXhrHooks_() {
+      /**
+       * A player function for setting an onRequest hook
+       *
+       * @param {function} callback for request modifiction
+       */
+      this.xhr.onRequest = callback => {
+        addOnRequestHook(this.xhr, callback);
+      };
+      /**
+       * A player function for setting an onResponse hook
+       *
+       * @param {callback} callback for response data retrieval
+       */
+
+      this.xhr.onResponse = callback => {
+        addOnResponseHook(this.xhr, callback);
+      };
+      /**
+       * Deletes a player onRequest callback if it exists
+       *
+       * @param {function} callback to delete from the player set
+       */
+
+      this.xhr.offRequest = callback => {
+        removeOnRequestHook(this.xhr, callback);
+      };
+      /**
+       * Deletes a player onResponse callback if it exists
+       *
+       * @param {function} callback to delete from the player set
+       */
+
+      this.xhr.offResponse = callback => {
+        removeOnResponseHook(this.xhr, callback);
+      }; // Trigger an event on the player to notify the user that vhs is ready to set xhr hooks.
+      // This allows hooks to be set before the source is set to vhs when handleSource is called.
+
+      this.player_.trigger('xhr-hooks-ready');
+    }
+  }
+  /**
+   * The Source Handler object, which informs video.js what additional
+   * MIME types are supported and sets up playback. It is registered
+   * automatically to the appropriate tech based on the capabilities of
+   * the browser it is running in. It is not necessary to use or modify
+   * this object in normal usage.
+   */
+
+  const VhsSourceHandler = {
+    name: 'videojs-http-streaming',
+    VERSION: version$4,
+    canHandleSource(srcObj, options = {}) {
+      const localOptions = merge(videojs.options, options);
+      return VhsSourceHandler.canPlayType(srcObj.type, localOptions);
+    },
+    handleSource(source, tech, options = {}) {
+      const localOptions = merge(videojs.options, options);
+      tech.vhs = new VhsHandler(source, tech, localOptions);
+      tech.vhs.xhr = xhrFactory();
+      tech.vhs.setupXhrHooks_();
+      tech.vhs.src(source.src, source.type);
+      return tech.vhs;
+    },
+    canPlayType(type, options) {
+      const simpleType = simpleTypeFromSourceType(type);
+      if (!simpleType) {
+        return '';
+      }
+      const overrideNative = VhsSourceHandler.getOverrideNative(options);
+      const supportsTypeNatively = Vhs.supportsTypeNatively(simpleType);
+      const canUseMsePlayback = !supportsTypeNatively || overrideNative;
+      return canUseMsePlayback ? 'maybe' : '';
+    },
+    getOverrideNative(options = {}) {
+      const {
+        vhs = {}
+      } = options;
+      const defaultOverrideNative = !(videojs.browser.IS_ANY_SAFARI || videojs.browser.IS_IOS);
+      const {
+        overrideNative = defaultOverrideNative
+      } = vhs;
+      return overrideNative;
+    }
+  };
+  /**
+   * Check to see if the native MediaSource object exists and supports
+   * an MP4 container with both H.264 video and AAC-LC audio.
+   *
+   * @return {boolean} if  native media sources are supported
+   */
+
+  const supportsNativeMediaSources = () => {
+    return browserSupportsCodec('avc1.4d400d,mp4a.40.2');
+  }; // register source handlers with the appropriate techs
+
+  if (supportsNativeMediaSources()) {
+    videojs.getTech('Html5').registerSourceHandler(VhsSourceHandler, 0);
+  }
+  videojs.VhsHandler = VhsHandler;
+  videojs.VhsSourceHandler = VhsSourceHandler;
+  videojs.Vhs = Vhs;
+  if (!videojs.use) {
+    videojs.registerComponent('Vhs', Vhs);
+  }
+  videojs.options.vhs = videojs.options.vhs || {};
+  if (!videojs.getPlugin || !videojs.getPlugin('reloadSourceOnError')) {
+    videojs.registerPlugin('reloadSourceOnError', reloadSourceOnError);
+  }
+
+  videojs.DomData = DomData;
+  videojs.log.level('debug');
+
+  return videojs;
+
+}));