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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 video tracks are added or existing ones removed. See Event handlers in VideoTrackList to learn more about watching for changes to a media element's track list.
var videoTracks = mediaElement.videoTracks;
Each track is represented by a
VideoTrack object which provides
information about the track.
|HTML Living Standard
The definition of 'HTMLMediaElement.videoTracks' in that specification.
|Living Standard||No change from HTML5|
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