AudioTrack: kind property

Limited availability

This feature is not Baseline because it does not work in some of the most widely-used browsers.

The kind property contains a string indicating the category of audio contained in the AudioTrack.

The kind can be used to determine the scenarios in which specific tracks should be enabled or disabled. See Audio track kind strings for a list of the kinds available for audio tracks.

Value

A string specifying the type of content the media represents. The string is one of those found in Audio track kind strings below.

Audio track kind strings

The kinds available for audio tracks are:

"alternative"

A potential alternative to the main track, such as a different audio take or a version of the soundtrack with only the music and no dialogue.

"descriptions"

An audio track providing audible descriptions of the action depicted in a video track.

"main"

The primary audio track.

"main-desc"

The primary audio track with audio descriptions mixed into it.

"translation"

A translated version of the primary audio track.

"commentary"

An audio track containing a commentary. This might be used to contain the director's commentary track on a movie, for example.

"" (empty string)

The track doesn't have an explicit kind, or the kind provided by the track's metadata isn't recognized by the user agent.

Specifications

Specification
HTML
# dom-audiotrack-kind-dev

Browser compatibility

desktop mobile
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
kind
Chrome – No support
Chrome 37 (Release date: 2014-08-26)
disabled
disabled From version 37 users must explicitly set the enable-experimental-web-platform-features preference to enabled. To change preferences in Chrome, visit chrome://flags.
Edge – No support
Edge 12 – 18 (Release date: 2015-07-29)
unknown Support unknown
Edge – No support
Edge 79 (Release date: 2020-01-15)
disabled
disabled From version 79 users must explicitly set the enable-experimental-web-platform-features preference to enabled. To change preferences in Edge, visit about:flags.
Firefox – No support
Firefox 33 (Release date: 2014-10-14)
disabled
disabled From version 33 users must explicitly set the media.track.enabled preference to true. To change preferences in Firefox, visit about:config.
Opera – No support
Opera 24 (Release date: 2014-09-02)
disabled
disabled From version 24 users must explicitly set the enable-experimental-web-platform-features preference to enabled. To change preferences in Opera, visit opera://flags.
Safari – Full support
Safari 8 (Release date: 2014-10-16)
footnote Full support
Chrome Android – No support
Chrome Android 37 (Release date: 2014-09-03)
disabled
disabled From version 37 users must explicitly set the enable-experimental-web-platform-features preference to enabled. To change preferences in Chrome Android, visit chrome://flags.
Firefox for Android – No support
Firefox for Android
footnote No support
Opera Android – No support
Opera Android
footnote No support
Safari on iOS – Full support
Safari on iOS 8 (Release date: 2014-09-17)
footnote Full support
Samsung Internet – No support
Samsung Internet
footnote No support
WebView Android – No support
WebView Android
footnote No support
WebView on iOS – Full support
WebView on iOS 8 (Release date: 2014-09-17)
footnote Full support

Legend

Tip: you can click/tap on a cell for more information.

Full support
Full support
No support
No support
User must explicitly enable this feature.
Has more compatibility info.