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CanvasCaptureMediaStreamTrack

The CanvasCaptureMediaStreamTrack interface represents the video track contained in a MediaStream being generated from a <canvas> following a call to HTMLCanvasElement.captureStream().

This interface inherits the properties of its parent, MediaStreamTrack.

CanvasCaptureMediaStreamTrack.canvas Read only: Returns the HTMLCanvasElement object whose surface is captured in real-time.

This interface inherits the methods of its parent, MediaStreamTrack.

CanvasCaptureMediaStreamTrack.requestFrame(): Manually forces a frame to be captured and sent to the stream. This lets applications that wish to specify the frame capture times directly do so, if they specified a frameRate of 0 when calling captureStream().

Specification	Status	Comment
Media Capture from DOM Elements The definition of 'CanvasCaptureMediaStreamTrack' in that specification.	Working Draft	Initial definition

	Desktop
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari
Basic support	51	?	41 Disabled 41 Disabled Disabled 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.	No	No	No
`canvas`	No	?	41 Disabled 41 Disabled Disabled 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.	No	No	No
`requestFrame`	?	?	41 Disabled 41 Disabled Disabled 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.	No	?	?

	Mobile
	Android webview	Chrome for Android	Edge Mobile	Firefox for Android	Opera for Android	iOS Safari	Samsung Internet
Basic support	No	No	?	41 Disabled 41 Disabled Disabled 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.	No	No	No
`canvas`	No	No	?	41 Disabled 41 Disabled Disabled 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.	No	No	No
`requestFrame`	?	?	?	?	?	?	?