Optional idThe unique identifier for this role instance.
MediaTrackRole.id.
May be undefined.undefined, as HLS characteristics do not have inherent IDs in this context.The URI identifying the scheme used for the role definition.
MediaTrackRole.schemeIdUri
(e.g., "urn:mpeg:dash:role:2011").urn:hls:characteristic representing HLS characteristics.Optional valueThe value of the role within the specified scheme.
MediaTrackRole.value
(e.g., "main", "caption", "description").
The
MediaTrackRoleinterface represents the role of a media track in a media stream.