WebRTC通话后如何释放相机和麦克风? [英] how do I release the camera and microphone after a WebRTC call?

问题描述

结束WebRTC通话后，我似乎无所事事，没有删除浏览器选项卡上的红色图标，表示正在使用相机或麦克风.

After I end a WebRTC call, nothing I seem to do removes the red icon on the browser tab that says the camera or microphone are in use.

我迭代 videoElement.srcObject.getTracks()中的轨道，并在每个轨道上调用 track.stop().然后，我从DOM中删除videoElement，但仍然有红色图标.

I iterate the tracks from videoElement.srcObject.getTracks() and call track.stop() on each one. I then delete the videoElement from the DOM, but still I have the red icon.

推荐答案

就我而言，问题是由于我对WebRTC和getUserMedia()的误解导致代码中的错误所致.我实际上是两次调用getUserMedia()，一次是用于本地< video> 元素，另一次是用于添加到RTCPeerConnection.

In my case, the problem was caused by a bug in my code due to my misunderstanding WebRTC and getUserMedia(). I was actually calling getUserMedia() twice, once for the local <video> element and a second time for adding to the RTCPeerConnection.

解决方法当然是只调用一次getuserMedia()并在两个地方都使用返回的流.

The fix was of course to only call getuserMedia() once and use the returned stream in both places.

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