MediaRecorder - 暂停和恢复事件在 Firefox 中不起作用

MediaRecorder - The Pause and resume events don't work in Firefox

我正在努力思考 MediaRecorder API,所以我编写了一个简单的 Web 应用程序,可以启动、暂停、恢复和停止录音。代码似乎工作正常,直到我在 Firefox(最新版本)中测试它。

[ The full code is here ]

Javascript代码:

var mediaRecorder = null,
constraints = { audio: true };


function onSuccess( stream ) {
   mediaRecorder = new MediaRecorder( stream );

   function getStatus() {
      alert('The mediaRecorder is ' + mediaRecorder.state);
   }

   mediaRecorder.onstart = getStatus;
   mediaRecorder.onpause = getStatus;
   mediaRecorder.onresume = getStatus;
   mediaRecorder.onstop = getStatus;
}

var onError = function(err) {
   console.log('Error: ' + err);
}

navigator.mediaDevices.getUserMedia(constraints).then(onSuccess, onError);

Html代码:

<button type="button" onclick="mediaRecorder.start()">Start</button>
<button type="button" onclick="mediaRecorder.pause()">Pause</button>
<button type="button" onclick="mediaRecorder.resume()">Resume</button>
<button type="button" onclick="mediaRecorder.stop()">Stop</button>

我发现,在 Firefox 中,当单击暂停时,mediaRecorder 实际上已暂停,但它不会触发暂停事件 ( onpause ),恢复也是如此。

问题:有办法解决这个问题吗?

不幸的是,这是一个 bug in Mozilla Firefox, and as a workaround, I found this awesome cross-browser library and it worked for me like a charm : Audrec