Proprietà HTML Audio/Video DOM audioTracks

❮ Riferimento DOM audio/video HTML

Esempio

Ottieni il numero di tracce audio disponibili:

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

Definizione e utilizzo

La proprietà audioTracks restituisce un oggetto AudioTrackList.

L'oggetto AudioTrackList rappresenta le tracce audio disponibili per l'audio/video.

Ogni traccia audio disponibile è rappresentata da un Oggetto AudioTrack.


Supporto browser

Property
audioTracks Not supported 11 Not supported Not supported Not supported

Sintassi

audio|video.audioTracks

Valore di ritorno

Type Description
AudioTrackList Object Represents the available audio tracks for the audio/video.

AudioTrackList Object:

  • audioTracks.length - get the number of audio tracks available
  • audioTracks.getTrackById(id) - get AudioTrack object by id
  • audioTracks[index] - get AudioTrack object by index

Note: The first available AudioTrack object is index 0

AudioTrack Object Represents an audio track.

AudioTrack Object Properties:

  • id - get the id of the audio track
  • kind - get the type of the audio track (can be: "alternative", "description", "main", "translation", "commentary", or "" (empty string)) 
  • label - get the label of the audio track
  • language - get the language of the audio track
  • enabled - get or set if the track is active (true|false)

❮ Riferimento DOM audio/video HTML