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RTCTrackEvent: RTCTrackEvent() constructor - Web APIs | MDN
new RTCTrackEvent(type, options)
type
A string with the name of the event.
It is case-sensitive and browsers always set it to track.
options
An object that, in addition of the properties defined in Event() , can have the following properties:
receiver
The RTCRtpReceiver
streams Optional
An array of MediaStream
track
The MediaStreamTrack
transceiver
The RTCRtpTransceiver
A new RTCTrackEventRTCPeerConnection.
