将音频和视频轨道合并到新的MediaStream中 [英] Combining audio and video tracks into new MediaStream

问题描述

我需要使用来自不同MediaStream的音频和视频来创建MediaStream。在Firefox中，我可以从一组磁道实例化一个新的MediaStream：

I need to get create a MediaStream using audio and video from different MediaStreams. In Firefox, I can instantiate a new MediaStream from an Array of tracks:

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

不幸的是，这在Chrome浏览器中不起作用：

Unfortunately, this doesn't work in Chrome:

ReferenceError：未定义MediaStream

ReferenceError: MediaStream is not defined

Chrome浏览器中是否存在用于合并曲目的替代方法

Is there an alternative method in Chrome for combining tracks from separate streams?

推荐答案

仍使用webkit进行供应商前缀：

still vendor-prefixed with webkit:

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

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