Mozilla's getting a new look. What do you think? https://mzl.la/brandsurvey

MediaRecorder.onstop

The MediaRecorder.onstop event handler (part of the MediaRecorder API) handles the stop event, allowing you to run code in response to media recording via a MediaRecorder being stopped.

The stop event is thrown either as a result of the MediaRecorder.stop() method being invoked, or when the media stream being captured ends. In each case, the stop event is preceded by a dataavailable event, making the Blob captured up to that point available for you to use in your application.

Syntax

MediaRecorder.onstop = function(event) { ... }
MediaRecorder.addEventListener('stop', function(event) { ... })

Example

...

  mediaRecorder.onstop = function(e) {
    console.log("data available after MediaRecorder.stop() called.");

    var audio = document.createElement('audio');
    audio.controls = true;
    var blob = new Blob(chunks, { 'type' : 'audio/ogg; codecs=opus' });
    var audioURL = window.URL.createObjectURL(blob);
    audio.src = audioURL;
    console.log("recorder stopped");
  }

  mediaRecorder.ondataavailable = function(e) {
    chunks.push(e.data);
  }

...

Specifications

Specification Status Comment
MediaStream Recording
The definition of 'MediaRecorder.onstop' in that specification.
Working Draft Initial definition

Browser compatibility

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
Basic support 47[2] 25.0 (25.0) Not supported Not supported Not supported
Feature Android Android Webview Firefox Mobile (Gecko) Firefox OS IE Phone Opera Mobile Safari Mobile Chrome for Android
Basic support Not supported Not supported 25.0 (25.0) 1.3[1] Not supported Not supported Not supported Not supported

[1] The intial Firefox OS implementation only supported audio recording.

[2] To try this feature on Chrome, enable Experimental Web Platform features from chrome://flags . Currently only video is supported, not audio.

See also

Document Tags and Contributors

 Contributors to this page: jpmedley, Sebastianz, chrisdavidmills, teoli, kscarfone
 Last updated by: jpmedley,