HTMLMediaElement: audioTracks property

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 AudioTrackList events to learn more about watching for changes to a media element's track list.

Value

An 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 an 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.

html

<video id="video" src="somevideo.mp4"></video>

JavaScript

The JavaScript code handles muting the video element's audio tracks.

const video = document.getElementById("video");

for (let i = 0; i < video.audioTracks.length; i += 1) {
  video.audioTracks[i].enabled = false;
}

Specifications

Specification
HTML Standard # dom-media-audiotracks-dev

Browser compatibility

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