HTMLMediaElement.audioTracks
The read-only audioTracks
property on HTMLMediaElement
objects returns
an AudioTrackList
object listing all of the AudioTrack
objects representing the media element's audio tracks.
The media element may be
either an <audio>
element or a <video>
element.
The returned list is live; that is, as tracks are added to and removed from the media element, the list's contents change dynamically. Once you have a reference to the list, you can monitor it for changes to detect when new audio tracks are added or existing ones removed. See Event handlers in AudioTrackList to learn more about watching for changes to a media element's track list.
Value
A AudioTrackList
object representing the list of audio tracks included
in the media element. The list of tracks can be accessed using array notation, or using
the object's getTrackById()
method.
Each track is represented by a AudioTrack
object which provides
information about the track.
Examples
In this example, all of the audio tracks on a given element are muted.
HTML
The HTML establishes the element itself.
<video id="video" src="somevideo.mp4"></video>
JavaScript
The JavaScript code handles muting the video element's audio tracks.
var video = document.getElementById("video");
for (var i = 0; i < video.audioTracks.length; i += 1) {
video.audioTracks[i].enabled = false;
}
Specifications
Specification |
---|
HTML Standard # dom-media-audiotracks-dev |
Browser compatibility
BCD tables only load in the browser
See also
- The interface defining it,
HTMLMediaElement
. <audio>
and<video>
AudioTrack
andAudioTrackList