PeerJS：远程视频轨道处于“静音”状态

Question

我正在尝试使用 peerjs 创建点对点视频聊天。
经过多次尝试，在以下情况下，两个对等方设法从另一个对等方接收视频：

桌面 Chrome --> 桌面 Chrome
桌面 Chrome --> 安卓 Chrome
桌面 Chrome --> 桌面 Safari
桌面 Chrome --> IOS Safari
Android Chrome --> 桌面 Chrome
安卓浏览器 --> 安卓浏览器
Android Chrome --> 桌面 Safari
Android Chrome --> IOS Safari
桌面 Safari --> 桌面 Chrome

但是，对于以下其他情况，接听电话的一方没有收到来电者的视频，或者双方都没有收到对方的视频：

桌面版 Safari --> Android Chrome
桌面 Safari --> IOS Safari
桌面 Safari --> 桌面 Safari
IOS Safari --> 桌面 Chrome
IOS Safari --> Android Chrome
IOS Safari --> 桌面Safari
IOS Safari --> IOS Safari。
远程视频的“静音”状态为“真”。 这是我目前的代码（我仍在努力寻找解决方案）：

Caller.js

    splitChunks: {
      chunks(chunk) {
        return chunk.name !== 'background';
      },
    },

Answerer.js

const peer = new Peer(idPeer, {
    config: {'iceServers': [
        {urls:'stun:stun1.l.google.com:19302'},
        {urls:'stun:stun2.l.google.com:19302'},
        {urls:'stun:stun3.l.google.com:19302'},
        {urls:'stun:stun4.l.google.com:19302'},
    ]},
    debug : 3 
});


peer.on('connection', function(conn) {
    clearInterval(intervalOpen);
    console.log(conn)
    conn.on('open', function() {
        demarrerAppel()
        conn.on('data', function(data) {
            var newData = JSON.parse(data)
            if(newData.type && newData.type == 2){
                var cpt = 0;
                function setDescription() {
                    if(call.peerConnection.iceGatheringState === "complete"){
                        call.peerConnection.setRemoteDescription(newData.desc).then(function(){
                            call.peerConnection.createAnswer({mandatory: { OfferToReceiveAudio: true, OfferToReceiveVideo: true }}).then(function(answer){
                                console.log(answer)
                                setTimeout(function(){ 
                                    call.peerConnection.setLocalDescription(answer).then(function(){
                                        var obj = {
                                            type: "answer",
                                            desc : call.peerConnection.localDescription
                                        }
                                        conn.send(JSON.stringify(obj));
                                    })
                                }, 2000);
                            });
                        });
                    }
                    else{
                        if(cpt < 75){
                            setTimeout(setDescription, 200);
                            cpt++;
                        }
                    }
                }    
               setDescription(); 
            }
            
            if(newData.options){
                if(newData.options.video){
                    $('#video-disabled').hide();
                }
                else{
                    $('#video-disabled').css('display', 'flex');
                }
                
                if(newData.options.audio){
                    $('#audio-disabled').hide();
                }
                else{
                    $('#audio-disabled').css('display', 'flex');
                }
            }
        });
        
        conn.on('error', function(err) {
            console.log(err)
        });
    });
    
});

peer.on('error',function(err){
    console.log(err.type);
})

function demarrerAppel(){
    optionsPartageVideo = {
        video: {
            width: { ideal: 1921 },
            height: { ideal: 1081 }
            
        }, 
        audio: {
            echoCancellation: true,
            noiseSuppression: true,
            sampleRate: 44100
        }
    };
                 
    navigator.mediaDevices.getUserMedia(optionsPartageVideo).then(function(stream) {
        videoPrestataire = stream;
        var options = {
          'constraints': {
            'mandatory': {
              'OfferToReceiveAudio': true,
              'OfferToReceiveVideo': true
            },
            offerToReceiveAudio: 1,
            offerToReceiveVideo: 1,
          }
        }
        call = peer.call($('#peerIdAnswerer').val(), stream, options);
        video_caller.muted = true; 
        video_caller.srcObject = stream;
        video_caller.onloadedmetadata = function(e) {
            video_caller.play();
        };
        
        call.on('stream', function(remoteStream) {
           
            video_answerer.muted = true; 
            video_answerer.srcObject = remoteStream;
        
            video_answerer.onloadedmetadata = function(e) {
                video_answerer.play();
            };
        });
        call.on('close', function() { 
        });
    }).catch(function(err) {
        console.log('Failed to get local stream' ,err);                    
    });  

}

我能做什么或我应该改变什么？感谢您的帮助！