将音频和视频轨道结合到新的MediaStream中

Question

我需要使用来自不同MediaStream的音频和视频创建MediaStream。

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

不幸的是，这并不在Chrome工作：

ReferenceError: MediaStream is not defined

有没有在Chrome从组合音轨的替代方法在Firefox中，我可以从轨道的数组实例化一个新MediaStream分开的流？

Answer 1

还是厂商前缀WebKit的：

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