Unique identifier (UUID).
Human-readable label for this track.
Current load lifecycle stage (idle → loading → success / failure).
Discriminator indicating whether this entity is a main media or a track.
Observable stream of track lifecycle events.
Directed relations to other MediaEntity instances (e.g. RelationType.PART_OF, RelationType.DERIVED_FROM).
The data source backing this track, if any.
The resolved file format type of the source.
Serializable state snapshot of this entity.
The kind of track (VIDEO, AUDIO, TEXT_TRACK, MARKER_TRACK, etc.).
Add an inter-track relation. Duplicates are silently ignored.
Check whether this track already has the given relation.
Transition the load stage to "failure" and emit a TrackEventType.TRACK_LOAD_ERROR event.
Transition the load stage to "loading" and emit a TrackEventType.TRACK_LOADING event.
Transition the load stage to "success" and emit a TrackEventType.TRACK_LOADED event.
Partially update mutable track attributes and emit a TrackEventType.TRACK_UPDATED event.
A track associated with a MainMedia (video, audio, text, markers, thumbnails, etc.).
Tracks carry their own source, load lifecycle, and inter-track relations. Extends MediaEntity with
mediaTypealways set to MediaEntityType.TRACK.