Abstract
Readonly
Optional
sid is set after track is published to server, or if it's a remote track
indicates current state of stream, it'll indicate paused if the track has been paused by congestion controller
paused
current receive bits per second
creates a new HTMLAudioElement or HTMLVideoElement, attaches to it, and returns it
attaches track to an existing HTMLAudioElement or HTMLVideoElement
Detaches from all attached elements
Detach from a single element
sid is set after track is published to server, or if it's a remote track