The MediaRecorder.stream read-only property returns the stream that was passed into the MediaRecorder() constructor when the MediaRecorder was created.
On this page
MediaRecorder: stream property
Value
The MediaStream passed into the MediaRecorder() constructor when the MediaRecorder was originally created.
Examples
js
if (navigator.getUserMedia) {
  console.log("getUserMedia supported.");
  navigator.getUserMedia(
    // constraints - only audio needed for this app
    {
      audio: true,
    },
    // Success callback
    (stream) => {
      const mediaRecorder = new MediaRecorder(stream);
      const myStream = mediaRecorder.stream;
      console.log(myStream);
    },
  );
}
   Specifications
| Specification | 
|---|
| MediaStream Recording  # dom-mediarecorder-stream  | 
      
Browser compatibility
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
stream | 
       49 
        47–49Before Chrome 49, only video is supported, not audio. | 
       79 | 25 | No | 36 | 14.1 | 49 | 49 
        47–49Before Chrome 49, only video is supported, not audio. | 
       25 | 36 | 14 | 5.0 | 
See also
- Using the MediaStream Recording API
 - Web Dictaphone: MediaRecorder + getUserMedia + Web Audio API visualization demo, by Chris Mills (source on GitHub.)
 - simpl.info MediaStream Recording demo, by Sam Dutton.
 Navigator.getUserMedia
© 2005–2023 MDN contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
 https://developer.mozilla.org/en-US/docs/Web/API/MediaRecorder/stream