RTCRtpTransceiver.mid

The read-only RTCRtpTransceiver interface's mid property specifies the negotiated media ID (mid) which the local and remote peers have agreed upon to uniquely identify the stream's pairing of sender and receiver.

A DOMString which uniquely identifies the pairing of source and destination of the transceiver's stream. Its value is taken from the media ID of the SDP m-line. This value is null if negotiation has not completed.

• Introduction to the Real-time Transport Protocol (RTP)