The id property contains a string which uniquely identifies the track represented by the VideoTrack. This ID can be used with the VideoTrackList.getTrackById() method to locate a specific track within the media associated with a media element.

The track ID can also be used as the fragment of a URL that loads the specific track (if the media supports media fragments).


var trackID =;


A DOMString which identifies the track, suitable for use when calling getTrackById() on an VideoTrackList such as the one specified by a media element's videoTracks property.



Specification Status Comment
HTML Living Standard
The definition of 'VideoTrack: id' in that specification.
Living Standard  

Browser compatibility

Update compatibility data on GitHub
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
idChrome ? Edge Full support 12Firefox ? IE ? Opera ? Safari Full support YesWebView Android ? Chrome Android ? Firefox Android ? Opera Android ? Safari iOS Full support YesSamsung Internet Android ?


Full support  
Full support
Compatibility unknown  
Compatibility unknown