307     w?: number;  property
596     n?: string;  property
690     track: MediaStreamTrack;  property
1392     track: MediaStreamTrack;  property
1601     track?: VideoTrack | AudioTrack | TextTrack | null;  property
1840     play(): void;  method
3775     w: number;  property
3791     readonly w: number;  property
7503     play(): Promise<void>;  method
8743     readonly track: TextTrack;  property
10284     readonly track: MediaStreamTrack;  property
12076     readonly track: MediaStreamTrack;  property
12094     readonly track: MediaStreamTrack | null;  property
12217     readonly track: MediaStreamTrack;  property
15464     readonly track: TextTrack;  property
15575     readonly track: VideoTrack | AudioTrack | TextTrack | null;  property