It seems that starting with M72, chrome is moving towards unified plan for SDP construction. In my current libjitsimeet custom app, I am receiving the following message:
lib-jitsi-meet.js:65977 [Deprecation] "Complex" Plan B SDP detected! Chrome will switch the default sdpSemantics in M72, around January 2019 from 'plan-b' to the standardized 'unified-plan' format and this peer connection is relying on the default sdpSemantics. This SDP is not compatible with Unified Plan and will be rejected by clients expecting Unified Plan. For more information about how to prepare for the switch, see https://webrtc.org/web-apis/chrome/unified-plan/. window.RTCPeerConnection.(anonymous function) @ lib-jitsi-meet.js:65977 window.RTCPeerConnection.setRemoteDescription @ lib-jitsi-meet.js:69456 RTCPeerConnection.setRemoteDescription @ main.js:462739 TraceablePeerConnection.setRemoteDescription @ lib-jitsi-meet.js:40274 _responderRenegotiate @ lib-jitsi-meet.js:28689 (anonymous) @ lib-jitsi-meet.js:28668 _renegotiate @ lib-jitsi-meet.js:28659 workFunction @ lib-jitsi-meet.js:28522 _processQueueTasks @ lib-jitsi-meet.js:28556 process @ lib-jitsi-meet.js:64443 run @ main.js:406602 runIfPresent @ main.js:406631 onGlobalMessage @ main.js:406671 postMessage (async) registerImmediate @ main.js:406682 setImmediate @ main.js:406589 webpackJsonp.3936.async.setImmediate @ lib-jitsi-meet.js:63744 (anonymous) @ lib-jitsi-meet.js:64402 _each @ lib-jitsi-meet.js:63680 _insert @ lib-jitsi-meet.js:64387 push @ lib-jitsi-meet.js:64416 _addOrRemoveRemoteStream @ lib-jitsi-meet.js:28535 addRemoteStream @ lib-jitsi-meet.js:28470 onJingle @ lib-jitsi-meet.js:26959 run @ lib-jitsi-meet.js:56870 (anonymous) @ lib-jitsi-meet.js:58130 forEachChild @ lib-jitsi-meet.js:55838 _dataRecv @ lib-jitsi-meet.js:58118 _onMessage @ lib-jitsi-meet.js:60604
I am also getting the following error from the same app:
ERROR: [lib-jitsi-meet] [modules/xmpp/JingleSessionPC.js] addRemoteStream failed: setRemoteDescription failed: InvalidAccessError: Failed to set remote offer sdp: Media section has more than one track specified with a=ssrc lines which is not supported with Unified Plan.
What are the plans for libjitsimeet to support the “unified-plan”?