为什么拉流端 执行了getUserMedia video才渲染画面 否则video就为空白

Question

navigator.mediaDevices.getUserMedia({ video: false, audio: true })

yourConn.value = new RTCPeerConnection(configuration);
yourConn.value.ontrack = event => {
    remoteVideoRef.value.srcObject = event.streams[0];
    console.log('接收到远程轨道' + event.track.kind, event.track.readyState, event);
};

yourConn.value.onicecandidate = event => {
    if (event.candidate) {
        send({ type: "candidate", candidate: event.candidate });
    }
};

有没有知道 为什么执行了getUserMedia video才渲染画面直播 否则video就为空白（纯拉流端应该不需要getUserMedia才对）

Answer 1

已解决，浏览器机制问题