Limited availability
The read-only VideoTrack property label returns a string specifying the video track's human-readable label, if one is available; otherwise, it returns an empty string.
A string specifying the track's human-readable label, if one is available in the track metadata. Otherwise, an empty string ("") is returned.
For example, a track whose kind is "sign" might have a label such as "A sign-language interpretation.".
This example returns an array of track kinds and labels for potential use in a user interface to select video tracks for a specified media element. The list is filtered to only allow certain track kinds through.
function getTrackList(el) {
const trackList = [];
const wantedKinds = ["main", "alternative", "commentary"];
el.videoTracks.forEach((track) => {
if (wantedKinds.includes(track.kind)) {
trackList.push({
id: track.id,
kind: track.kind,
label: track.label,
});
}
});
return trackList;
}
The resulting trackList contains an array of video tracks whose kind is one of those in the array wantedKinds, with each entry providing the track's id, kind, and label.
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