This is an experimental technology
Because this technology's specification has not stabilized, check the compatibility table for the proper prefixes to use in various browsers. Also note that the syntax and behavior of an experimental technology is subject to change in future versions of browsers as the spec changes.
The CanvasCaptureMediaStream.canvas read-only property returns the HTMLCanvasElement associated with the stream.
var elt = stream.canvas;
// 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;
| Specification | Status | Comment |
|---|---|---|
| Media Capture from DOM Elements The definition of 'HTMLCanvasElement' in that specification. | Editor's Draft | Initial definition |
| Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari (WebKit) |
|---|---|---|---|---|---|
| Basic support | Not supported | 41 (41)[1] | Not supported | Not supported | Not supported |
| Feature | Android | Firefox Mobile (Gecko) | IE Phone | Opera Mobile | Safari Mobile |
|---|---|---|---|---|---|
| Basic support | Not supported | 41.0 (41)[1] | Not supported | Not supported | Not supported |
[1] Disabled by default; set the preference canvas.capturestream.enabled to true to activate.
HTMLCanvasElement.captureStream() to create a stream associated to a given canvas element.
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https://developer.mozilla.org/en-US/docs/Web/API/CanvasCaptureMediaStream/canvas