negromate/web/static/js/videojs-playlist/docs/api.md

video.js Playlist API

Playlist Item Object

A playlist is an array of playlist items. A playlist item is an object with the following properties:

Property	Type	Optional	Description
sources	Array		An array of sources that video.js understands.
poster	String	✓	A poster image to display for these sources.
textTracks	Array	✓	An array of text tracks that Video.js understands.

Methods

player.playlist([Array newList], [Number newIndex]) -> Array

Get or set the current playlist for a player.

If called without arguments, it is a getter. With an argument, it is a setter.

player.playlist([{
  sources: [{
    src: 'http://media.w3.org/2010/05/sintel/trailer.mp4',
    type: 'video/mp4'
  }],
  poster: 'http://media.w3.org/2010/05/sintel/poster.png'
}, {
  sources: [{
    src: 'http://media.w3.org/2010/05/bunny/trailer.mp4',
    type: 'video/mp4'
  }],
  poster: 'http://media.w3.org/2010/05/bunny/poster.png'
}, {
  sources: [{
    src: 'http://vjs.zencdn.net/v/oceans.mp4',
    type: 'video/mp4'
  }],
  poster: 'http://www.videojs.com/img/poster.jpg'
}, {
  sources: [{
    src: 'http://media.w3.org/2010/05/bunny/movie.mp4',
    type: 'video/mp4'
  }],
  poster: 'http://media.w3.org/2010/05/bunny/poster.png'
}, {
  sources: [{
    src: 'http://media.w3.org/2010/05/video/movie_300.mp4',
    type: 'video/mp4'
  }],
  poster: 'http://media.w3.org/2010/05/video/poster.png'
}]);
// [{ ... }, ... ]

player.playlist([{
  sources: [{
    src: 'http://media.w3.org/2010/05/video/movie_300.mp4',
    type: 'video/mp4'
  }],
  poster: 'http://media.w3.org/2010/05/video/poster.png'
}]);
// [{ ... }]

If a setter, a second argument sets the video to be loaded. If omitted, the first video is loaded. If -1, no video is loaded.

player.playlist([{
  sources: [{
    src: 'http://media.w3.org/2010/05/sintel/trailer.mp4',
    type: 'video/mp4'
  }],
  poster: 'http://media.w3.org/2010/05/sintel/poster.png'
}, {
  sources: [{
    src: 'http://media.w3.org/2010/05/bunny/trailer.mp4',
    type: 'video/mp4'
  }],
  poster: 'http://media.w3.org/2010/05/bunny/poster.png'
}], 1);
// [{ ... }]

player.playlist.currentItem([Number index]) -> Number

Get or set the current item index.

If called without arguments, it is a getter. With an argument, it is a setter.

If the player is currently playing a non-playlist video, it will return -1.

var samplePlaylist = [{
  sources: [{
    src: 'http://media.w3.org/2010/05/sintel/trailer.mp4',
    type: 'video/mp4'
  }],
  poster: 'http://media.w3.org/2010/05/sintel/poster.png'
}, {
  sources: [{
    src: 'http://media.w3.org/2010/05/bunny/trailer.mp4',
    type: 'video/mp4'
  }],
  poster: 'http://media.w3.org/2010/05/bunny/poster.png'
}];

player.playlist(samplePlaylist);

player.currentItem();
// 0

player.currentItem(2);
// 2

player.src('http://example.com/video.mp4');
player.playlist.currentItem();
// -1

player.playlist.contains(String|Object|Array value) -> Boolean

Determine whether a string, source object, or playlist item is contained within a playlist.

Assuming the playlist used above, consider the following example:

player.playlist.contains('http://media.w3.org/2010/05/sintel/trailer.mp4');
// true

player.playlist.contains([{
  src: 'http://media.w3.org/2010/05/sintel/poster.png',
  type: 'image/png'
}]);
// false

player.playlist.contains({
  sources: [{
    src: 'http://media.w3.org/2010/05/sintel/trailer.mp4',
    type: 'video/mp4'
  }]
});
// true

player.playlist.indexOf(String|Object|Array value) -> Number

Get the index of a string, source object, or playlist item in the playlist. If not found, returns -1.

Assuming the playlist used above, consider the following example:

player.playlist.indexOf('http://media.w3.org/2010/05/bunny/trailer.mp4');
// 1

player.playlist.contains([{
  src: 'http://media.w3.org/2010/05/bunny/movie.mp4',
  type: 'video/mp4'
}]);
// 3

player.playlist.contains({
  sources: [{
    src: 'http://media.w3.org/2010/05/video/movie_300.mp4',
    type: 'video/mp4'
  }]
});
// 4

player.playlist.currentIndex() -> Number

Get the index of the current item in the playlist. This is identical to calling currentItem() with no arguments.

var samplePlaylist = [{
  sources: [{
    src: 'http://media.w3.org/2010/05/sintel/trailer.mp4',
    type: 'video/mp4'
  }],
  poster: 'http://media.w3.org/2010/05/sintel/poster.png'
}, {
  sources: [{
    src: 'http://media.w3.org/2010/05/bunny/trailer.mp4',
    type: 'video/mp4'
  }],
  poster: 'http://media.w3.org/2010/05/bunny/poster.png'
}];

player.currentIndex();
// 0

player.playlist.nextIndex() -> Number

Get the index of the next item in the playlist.

If the player is on the last item, returns the last item's index. However, if the playlist repeats and is on the last item, returns 0.

If the player is currently playing a non-playlist video, it will return -1.

var samplePlaylist = [{
  sources: [{
    src: 'http://media.w3.org/2010/05/sintel/trailer.mp4',
    type: 'video/mp4'
  }],
  poster: 'http://media.w3.org/2010/05/sintel/poster.png'
}, {
  sources: [{
    src: 'http://media.w3.org/2010/05/bunny/trailer.mp4',
    type: 'video/mp4'
  }],
  poster: 'http://media.w3.org/2010/05/bunny/poster.png'
}];

player.playlist(samplePlaylist);

player.nextIndex();
// 1

player.next();
player.nextIndex();
// 1

player.repeat(true);
player.nextIndex();
// 0

player.src('http://example.com/video.mp4');
player.playlist.nextIndex();
// -1

player.playlist.previousIndex() -> Number

Get the index of the previous item in the playlist.

If the player is on the first item, returns 0. However, if the playlist repeats and is on the first item, returns the last item's index.

If the player is currently playing a non-playlist video, it will return -1.

var samplePlaylist = [{
  sources: [{
    src: 'http://media.w3.org/2010/05/sintel/trailer.mp4',
    type: 'video/mp4'
  }],
  poster: 'http://media.w3.org/2010/05/sintel/poster.png'
}, {
  sources: [{
    src: 'http://media.w3.org/2010/05/bunny/trailer.mp4',
    type: 'video/mp4'
  }],
  poster: 'http://media.w3.org/2010/05/bunny/poster.png'
}];

player.playlist(samplePlaylist, 1);

player.previousIndex();
// 0

player.previous();
player.previousIndex();
// 0

player.repeat(true);
player.previousIndex();
// 1

player.src('http://example.com/video.mp4');
player.playlist.previousIndex();
// -1

player.playlist.lastIndex() -> Number

Get the index of the last item in the playlist.

var samplePlaylist = [{
  sources: [{
    src: 'http://media.w3.org/2010/05/sintel/trailer.mp4',
    type: 'video/mp4'
  }],
  poster: 'http://media.w3.org/2010/05/sintel/poster.png'
}, {
  sources: [{
    src: 'http://media.w3.org/2010/05/bunny/trailer.mp4',
    type: 'video/mp4'
  }],
  poster: 'http://media.w3.org/2010/05/bunny/poster.png'
}];

player.lastIndex();
// 1

player.playlist.first() -> Object|undefined

Play the first item in the playlist.

Returns the activated playlist item unless the playlist is empty (in which case, returns undefined).

player.playlist.first();
// { ... }

player.playlist([]);
player.playlist.first();
// undefined

player.playlist.last() -> Object|undefined

Play the last item in the playlist.

Returns the activated playlist item unless the playlist is empty (in which case, returns undefined).

player.playlist.last();
// { ... }

player.playlist([]);
player.playlist.last();
// undefined

player.playlist.next() -> Object

Advance to the next item in the playlist.

Returns the activated playlist item unless the playlist is at the end (in which case, returns undefined).

player.playlist.next();
// { ... }

player.playlist.last();
player.playlist.next();
// undefined

player.playlist.previous() -> Object

Go back to the previous item in the playlist.

Returns the activated playlist item unless the playlist is at the beginning (in which case, returns undefined).

player.playlist.next();
// { ... }

player.playlist.previous();
// { ... }

player.playlist.first();
// { ... }

player.playlist.previous();
// undefined

player.playlist.autoadvance([Number delay]) -> undefined

Sets up playlist auto-advance behavior.

Once invoked, at the end of each video in the playlist, the plugin will wait delay seconds before proceeding automatically to the next video.

Any value which is not a positive, finite integer, will be treated as a request to cancel and reset the auto-advance behavior.

If you change auto-advance during a delay, the auto-advance will be canceled and it will not advance the next video, but it will use the new timeout value for the following videos.

// no wait before loading in the next item
player.playlist.autoadvance(0);

// wait 5 seconds before loading in the next item
player.playlist.autoadvance(5);

// reset and cancel the auto-advance
player.playlist.autoadvance();

player.playlist.repeat([Boolean val]) -> Boolean

Enable or disable repeat by passing true or false as the argument.

When repeat is enabled, the "next" video after the final video in the playlist is the first video in the playlist. This affects the behavior of calling next(), of autoadvance, and so on.

This method returns the current value. Call with no argument to use as a getter.

Examples:

player.playlist.repeat(true);

player.playlist.repeat();
// true

player.playlist.repeat(false);
player.playlist.repeat();
// false

player.playlist.sort([Function compare]) -> undefined

Sort the playlist in a manner identical to Array#sort.

Fires the playlistsorted event after sorting.

player.playlist.reverse() -> undefined

Reverse the playlist in a manner identical to Array#reverse.

Fires the playlistsorted event after reversing.

player.playlist.shuffle() -> undefined

Shuffles/randomizes the order of playlist items in a manner identical to lodash.shuffle.

Fires the playlistsorted event after shuffling.

Events

duringplaylistchange

This event is fired after the contents of the playlist are changed when calling playlist(), but before the current playlist item is changed. The event object has several special properties:

• nextIndex: The index from the next playlist that will be played first.
• nextPlaylist: A shallow clone of the next playlist.
• previousIndex: The index from the previous playlist (will always match the current index when this event triggers, but is provided for completeness).
• previousPlaylist: A shallow clone of the previous playlist.

NOTE: This event fires every time player.playlist() is called - including the first time.

Caveats

During the firing of this event, the playlist is considered to be in a changing state, which has the following effects:

• Calling the main playlist method (i.e. player.playlist([...])) will throw an error.
• Playlist navigation methods - first, last, next, and previous - are rendered inoperable.
• The currentItem() method only acts as a getter.
• While the sorting methods - sort, reverse, and shuffle - will continue to work, they do not fire the playlistsorted event.

Why have this event?

This event provides an opportunity to intercept the playlist setting process before a new source is set on the player and before the playlistchange event fires, while providing a consistent playlist API.

One use-case might be shuffling a playlist that has just come from a server, but before its initial source is loaded into the player or the playlist UI is updated:

player.on('duringplaylistchange', function() {

  // Remember, this will not trigger a "playlistsorted" event!
  player.playlist.shuffle();
});

player.on('playlistchange', function() {
  videojs.log('The playlist was shuffled, so the UI can be updated.');
});

playlistchange

This event is fired asynchronously whenever the contents of the playlist are changed (i.e., when player.playlist() is called with an argument) - except the first time.

It is fired asynchronously to let the browser start loading the first video in the new playlist.

player.on('playlistchange', function() {
  player.playlist();
});

player.playlist([]);
// [ ... ]

player.playlist([]);
// [ ... ]

Backward Compatibility

This event does not fire the first time player.playlist() is called. If you want it to fire on the first call to player.playlist(), you can call it without an argument before calling it with one:

// This will fire no events.
player.playlist();

// This will fire both "duringplaylistchange" and "playlistchange"
player.playlist([...]);

This behavior will be removed in v5.0.0 and the event will fire in all cases.

beforeplaylistitem

This event is fired before switching to a new content source within a playlist (i.e., when any of currentItem(), first(), or last() is called, but before the player's state has been changed).

playlistitem

This event is fired when switching to a new content source within a playlist (i.e., when any of currentItem(), first(), or last() is called; after the player's state has been changed, but before playback has been resumed).

playlistsorted

This event is fired when any method is called that changes the order of playlist items - sort(), reverse(), or shuffle().