WebRTC - 实时更改设备/摄像头 [英] WebRTC - Change device/camera in realtime

问题描述

我在尝试实时更改相机时遇到问题，它适用于本地视频，但远程人员无法看到新相机，仍然看到旧相机。我试图停止流和init，但仍然不工作。这只是我的一些代码。
我到处搜索，我找不到一个解决方案。有人可以帮我吗？

I'm having a problem trying to change my camera in real time, It works for the local video, but the remote person cannot see the new camera, and still sees the old one. I tried to stop the stream and init again but still not working. This is just some of my code. I have searched everywhere and I can't find a solution. Can someone help me out?

function init() {
        getUserMedia(constraints, connect, fail);
}

$(".webcam-devices").on('change', function() {
    var deviceID = this.value;
    constraints.video = {
        optional: [{
            sourceId: deviceID
        }]
    };
    stream.getTracks().forEach(function (track) { track.stop(); });
    init();
});

推荐答案

您需要实际更改要发送的曲目在PeerConnection中。在Firefox中，您可以使用 RTPSender.replaceTrack（new_track）; 更改而不进行重新协商（现在已添加到规范中）。否则，您需要将新的流/轨道添加到RTCPeerConnection，并删除旧的流，然后处理协商所需的事件和重新协商

You need to actually change the track you're sending in the PeerConnection. In Firefox, you can use RTPSender.replaceTrack(new_track); to change without renegotiation (this is being added to the spec now). Otherwise, you need to add the new stream/track to the RTCPeerConnection, and remove the old one, and then process the onnegotiationneeded event and renegotatiate

查看@ jib的fiddles ： Jib's replaceTrack（）小提示：

See one of @jib's fiddles: Jib's replaceTrack() fiddle:

function flip() {
  flipped = 1 - flipped;
  return pc1.getSenders()[0].replaceTrack(streams[flipped].getVideoTracks()[0])
  .then(() => log("Flip! (notice change in dimensions & framerate!)"))
  .catch(failed);
}

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