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MediaRecorder: start event - Web APIs | MDN
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MediaRecorder: start event
Baseline
Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since April 2021.
The start event of the MediaRecorder interface is fired when
MediaRecorder.start() is called. At this point, the data
starts being gathered into a Blob.
Syntax
Use the event name in methods like addEventListener(), or set an event handler property.
js
addEventListener("start", (event) => { })
onstart = (event) => { }
Event type
A generic Event.
Example
js
record.onclick = () => {
mediaRecorder.start();
console.log("recorder started");
};
mediaRecorder.onstart = () => {
// do something in response to
// recording being started
};
Specifications
| Specification |
|---|
| MediaStream Recording # dom-mediarecorder-onstart |
Browser compatibility
Loading…
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