<div dir="ltr">You can always rewrite the sdp after it's been generated and include mslabel attributes (sibling to a=ssrc). That's what we do. </div> <div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, May 3, 2021 at 12:20 PM Acs Christoph via gstreamer-devel <<a href="mailto:gstreamer-devel@lists.freedesktop.org">gstreamer-devel@lists.freedesktop.org</a>> wrote: </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Hi I have multiple streams with one webrtcbin, playing works fine but I need a way to identify these streams. Currently on js side when new RTCRtpTransceiver is added (RTCPeerConnection.ontrack), I see this information, each video streams has id's like video0, video1, video2 Is there a way to change these id's (video0, video1, video2) to a different name so that i can set an identifier for each side on gstreamer side and get then these identifiers on js side ? *JS RTCPeerConnection Track Info:* track: MediaStreamTrack id: "webrtctransceiver3" kind: "video" label: "webrtctransceiver3" *JS RTCPeerConnection Transceiver Info* transceiver: RTCRtpTransceiver currentDirection: "recvonly" direction: "recvonly" mid: "video0" my gstreamer pipeline looks this. webrtcbin name=sendrecv bundle-policy=max-bundle rtspsrc location=rtsp://<a href="http://213.208.158.226:554/stream_0" rel="noreferrer" target="_blank">213.208.158.226:554/stream_0</a> user-id=G4S user-pw=1211 name=rtspsrc latency=0 ! rtph264depay name=depay ! h264parse ! rtph264pay config-interval=-1 ! application/x-rtp, media=video, encoding-name=H264, payload=96 ! sendrecv. rtspsrc location=rtsp://<a href="http://213.208.158.226:554/stream_0" rel="noreferrer" target="_blank">213.208.158.226:554/stream_0</a> user-id=G4S user-pw=1211 name=rtspsrc2 latency=0 ! rtph264depay name=depay2 ! h264parse ! rtph264pay config-interval=-1 ! application/x-rtp, media=video, encoding-name=H264, payload=96 ! sendrecv. rtspsrc location=rtsp://<a href="http://213.208.158.226:554/stream_0" rel="noreferrer" target="_blank">213.208.158.226:554/stream_0</a> user-id=G4S user-pw=1211 name=rtspsrc3 latency=0 ! rtph264depay name=depay3 ! h264parse ! rtph264pay config-interval=-1 ! application/x-rtp, media=video, encoding-name=H264, payload=96 ! sendrecv. big thanks br christoph -- Sent from: <a href="http://gstreamer-devel.966125.n4.nabble.com/" rel="noreferrer" target="_blank">http://gstreamer-devel.966125.n4.nabble.com/</a> _______________________________________________ gstreamer-devel mailing list <a href="mailto:gstreamer-devel@lists.freedesktop.org" target="_blank">gstreamer-devel@lists.freedesktop.org</a> <a href="https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel" rel="noreferrer" target="_blank">https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel</a> </blockquote></div>