使用 JsSIP 将 mediaStream 绑定到 <Video> 元素 Bad Media 描述

问：

我一直在尝试制作一个简单的视频通话界面，到目前为止，我只设法启动了视频通话，接收器获得了我的音频和视频流，但是当我尝试将流（本地或远程）添加到页面中的元素时，我收到错误。JsSIP<video>"Bad Media Description"

我的代码是这样的：

    const address = "my.address.com";
    const pass = "pass";
    const callee = "id2";
    const user = "id1";
    const sockets = [];
    const localStream = new MediaStream();
    const config = {
      sockets: sockets,
      uri: `sip:${user}@${address}`,
      password: pass
    };
        const agent = new JsSIP.UA(config);
    const servers = {
      iceServers: [
        {urls:"stun:stun.l.google.com:19302"}
      ]
    };
    const options = {
      pcConfig: servers,
      mediaConstraints: {
        audio: true,
        video: true
      }
    };
    
    document.getElementById("localVideo").srcObject = localStream;
    document.getElementById("buttonCall").addEventListener("click", call);
    
    sockets.push(
      new JsSIP
      .WebSocketInterface(`wss://${address}:443/ws`)
    );
    
    agent.start();
    
        agent.on("newRTCSession", function(data){
          let dataSession = data.session;
          
          dataSession.on("confirmed",function(e){
            let localTracks = dataSession.connection.getSenders();
            localStream.addTrack(localTracks[0].track);
            localStream.addTrack(localTracks[1].track);
            console.log(e);
            document.getElementById("localVideo").play();
          });
        });
        function call() {
            agent
            .call(
            `sip:${callee}@${address}`,
            options
            );
        }

如果有人能为我指出正确的方法使这成为可能，我将不胜感激。