HTMLMediaElement.audioTracks

Draft
This page is not complete.

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

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidEdge MobileFirefox for AndroidOpera for AndroidiOS SafariSamsung Internet
Basic supportChrome ? Edge No support NoFirefox Full support 33
Disabled
Full support 33
Disabled
Disabled From version 33: this feature is behind the media.track.enabled preference (needs to be set to true). To change preferences in Firefox, visit about:config.
IE ? Opera ? Safari ? WebView Android ? Chrome Android ? Edge Mobile Full support YesFirefox Android Full support 33
Disabled
Full support 33
Disabled
Disabled From version 33: this feature is behind the media.track.enabled preference (needs to be set to true). To change preferences in Firefox, visit about:config.
Opera Android ? Safari iOS ? Samsung Internet Android ?

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

Document Tags and Contributors

Last updated by: sideshowbarker,