4.1.4. addTransceiver

4.1.4. addTransceiver

The addTransceiver method adds a new RtpTransceiver to the PeerConnection. If a MediaStreamTrack argument is provided, then the transceiver will be configured with that media type and the track will be attached to the transceiver. Otherwise, the application MUST explicitly specify the type; this mode is useful for creating recvonly transceivers as well as for creating transceivers to which a track can be attached at some later point.

At the time of creation, the application can also specify a transceiver direction attribute, a set of MediaStreams that the transceiver is associated with (allowing "LS" group assignments), and a set of encodings for the media (used for simulcast as described in Section 3.7).