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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.
Syntax
var audioTracks = mediaElement.audioTracks;
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 | Status | Comment |
---|---|---|
HTML Living Standard The definition of 'HTMLMediaElement.audioTracks' in that specification. |
Living Standard | No change from HTML5 |
HTML5 The definition of 'HTMLMediaElement.audioTracks' in that specification. |
Recommendation | Initial definition. |
Browser compatibility
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
audioTracks | Chrome No support No | Edge No support 12 — 79 | Firefox
Full support
33
| IE ? | Opera Full support Yes | Safari Full support Yes | WebView Android No support No | Chrome Android No support No | Firefox Android
Full support
33
| Opera Android Full support Yes | Safari iOS Full support Yes | Samsung Internet Android No support No |
Legend
- Full support
- Full support
- No support
- No support
- Compatibility unknown
- Compatibility unknown
- User must explicitly enable this feature.
- User must explicitly enable this feature.
See also
- The interface defining it,
HTMLMediaElement
. <audio>
and<video>
AudioTrack
andAudioTrackList