VideoTrack.kind

The kind property contains a string indicating the category of video contained in the VideoTrack. The kind can be used to determine the scenarios in which specific tracks should be enabled or disabled. See Video track kind strings for a list of the kinds available for video tracks.

Syntax

var trackKind = VideoTrack.kind;

Value

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

Video track kind strings

The kinds available for video tracks are:

"alternative"
A potential alternative to the main track, such as a different video take or a version of the soundtrack with only the music and no dialogue.
"captions"
A version of the main video track with captions burnt in.
"main"
The primary video track.
"sign"
A sign-language interpretation of an audio track.
"subtitles"
A version of the main video track with subtitles burnt in.
"commentary"
A video 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 Status Comment
HTML Living Standard
The definition of 'VideoTrack: kind' in that specification.
Living Standard

Browser compatibility

DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
kindChrome Full support 45
Disabled
Full support 45
Disabled
Disabled From version 45: this feature is behind the enable-experimental-web-platform-features preference (needs to be set to enabled). To change preferences in Chrome, visit chrome://flags.
Edge Full support 79
Disabled
Full support 79
Disabled
Disabled From version 79: this feature is behind the enable-experimental-web-platform-features preference (needs to be set to enabled).
No support 12 — 79
Firefox 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 Full support 10Opera Full support 32
Disabled
Full support 32
Disabled
Disabled From version 32: this feature is behind the enable-experimental-web-platform-features preference (needs to be set to enabled).
Safari Full support 6.1WebView Android Full support 45Chrome Android Full support 45
Disabled
Full support 45
Disabled
Disabled From version 45: this feature is behind the enable-experimental-web-platform-features preference (needs to be set to enabled). To change preferences in Chrome, visit chrome://flags.
Firefox 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 Full support 32
Disabled
Full support 32
Disabled
Disabled From version 32: this feature is behind the enable-experimental-web-platform-features preference (needs to be set to enabled).
Safari iOS Full support 7Samsung Internet Android No support No

Legend

Full support
Full support
No support
No support
User must explicitly enable this feature.
User must explicitly enable this feature.