MediaRecorder: start event

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

Report problems with this compatibility data on GitHub
desktopmobile
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
start event

Legend

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Full support
Full support

See also