javascript - 将音频和视频轨道组合到新的 MediaStream 中

Question

我需要使用来自不同 MediaStreams 的音频和视频创建一个 MediaStream。在 Firefox 中，我可以从轨道数组中实例化一个新的 MediaStream:

  var outputTracks = [];
  outputTracks = outputTracks.concat(outputAudioStream.getTracks());
  outputTracks = outputTracks.concat(outputVideoStream.getTracks());
  outputMediaStream = new MediaStream(outputTracks);

不幸的是，这在 Chrome 中不起作用:

ReferenceError: MediaStream is not defined

Chrome 中是否有其他方法可以合并来自不同流的轨道？

Answer 1

仍然以 webkit 为前缀:

  var outputTracks = [];
  outputTracks = outputTracks.concat(outputAudioStream.getTracks());
  outputTracks = outputTracks.concat(outputVideoStream.getTracks());
  outputMediaStream = new webkitMediaStream(outputTracks);