CanvasCaptureMediaStreamTrack.canvas - Web APIs 编辑

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

Browser compatibility

BCD tables only load in the browser

See also

• HTMLCanvasElement.captureStream() to create a stream to capture a given canvas element.
• <canvas>