I’ve working on webrtc with H264 Codec for video and ALaw Codec for audio from my camera (as a peer). With H264 and ALaw Codec, my browser (google chrome) and my camera can handshake together and work well. But when I switch from H264 to H265 Codec (audio still ALaw), my browser (google chrome) can be handshake to my camera. It’s has occurs the error message:

Uncaught (in promise) DOMException: Failed to execute 'setLocalDescription' on 'RTCPeerConnection': Failed to set local answer sdp: Failed to apply the description for m= section with mid='audio': Failed to setup RTCP mux.

Does any example about stream video with H265 Codec on browser ??
Thank you so much for helping.

I’m using libdatachannel example streamer:
https://github.com/paullouisageneau/libdatachannel/tree/master/examples/streamer

Code I modify from H264 to H265 in function addVideo()

    auto video = Description::Video(cname, Description::Direction::SendOnly);
    video.addH265Codec(110);    
    video.addSSRC(ssrc, cname, msid, cname);
    auto track = pc->addTrack(video);
    // create RTP configuration
    auto rtpConfig = make_shared<RtpPacketizationConfig>(ssrc, cname, payloadType, H265RtpPacketizer::defaultClockRate);
    // create packetizer
    auto packetizer = make_shared<H265RtpPacketizer>(NalUnit::Separator::LongStartSequence, rtpConfig);
    // add RTCP SR handler
    auto srReporter = make_shared<RtcpSrReporter>(rtpConfig);
    packetizer->addToChain(srReporter);
    // add RTCP NACK handler
    auto nackResponder = make_shared<RtcpNackResponder>();
    packetizer->addToChain(nackResponder);
    // set handler
    track->setMediaHandler(packetizer);
    track->onOpen(onOpen);
    auto trackData = make_shared<ClientTrackData>(track, srReporter);
    return trackData;