Proprietà HTML Audio/Video DOM videoTracks

❮ Riferimento DOM audio/video HTML

Esempio

Ottieni il numero di tracce video disponibili:

var vid = document.getElementById("myVideo");
alert(vid.videoTracks.length);

Definizione e utilizzo

La proprietà videoTracks restituisce un oggetto VideoTrackList.

L'oggetto VideoTrackList rappresenta le tracce video disponibili per il video.

Ogni traccia video disponibile è rappresentata da un Oggetto VideoTrack.


Supporto browser

Property
videoTracks Not supported Not supported Not supported Not supported Not supported

Sintassi

video.videoTracks

Valore di ritorno

Type Description
VideoTrackList Object Represents the available video tracks for the video.

VideoTrackList Object:

  • videoTracks.length - get the number of video tracks available in the video
  • videoTracks.getTrackById(id) - get VideoTrack object by id
  • videoTracks[index] - get VideoTrack object by index
  • videoTracks.selectedIndex - get the index of the current VideoTrack object

Note: The first available VideoTrack object is index 0

VideoTrack Object Represents a video track.

VideoTrack Object Properties:

  • id - get the id of the video track
  • kind - get the type of the video track (can be: "alternative", "captions", "main", "sign", "subtitles", "commentary", or "" (empty string)) 
  • label - get the label of the video track
  • language - get the language of the video track
  • selected - get or set if the track is active (true|false)

❮ Riferimento DOM audio/video HTML