The CanvasCaptureMediaStreamTrack canvas read-only property returns the HTMLCanvasElement from which frames are being captured.
Syntax
var elt = stream.canvas;
Value
An HTMLCanvasElement indicating the canvas which is the source of the frames being captured.
Example
// Find the canvas element to capture
var canvasElt = document.getElementsByTagName("canvas")[0];
// Get the stream
var stream = canvasElt.captureStream(25); // 25 FPS
// Do things to the stream
...
// Obtain the canvas associated with the stream
var canvas = stream.canvas;
Specifications
| Specification | Status | Comment |
|---|---|---|
| Media Capture from DOM Elements The definition of 'CanvasCaptureMediaStreamTrack.canvas' in that specification. |
Working Draft | Initial definition |
Browser compatibility
The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
| Feature | Chrome | Edge | Firefox | Internet Explorer | Opera | Safari |
|---|---|---|---|---|---|---|
| Basic support | No | ? | 411 | No | No | No |
| Feature | Android webview | Chrome for Android | Edge mobile | Firefox for Android | Opera Android | iOS Safari | Samsung Internet |
|---|---|---|---|---|---|---|---|
| Basic support | No | No | ? | 411 | No | No | No |
1. From version 41: this feature is behind the canvas.capturestream.enabled preference (needs to be set to true). To change preferences in Firefox, visit about:config.
See also
HTMLCanvasElement.captureStream()to create a stream to capture a given canvas element.<canvas>