/Web APIs


Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

The CaptureController interface provides methods that can be used to further manipulate a capture session separate from its initiation via MediaDevices.getDisplayMedia().

A CaptureController object is associated with a capture session by passing it into a getDisplayMedia() call as the value of the options object's controller property.


CaptureController() Experimental

Creates a new CaptureController object instance.

Instance methods

setFocusBehavior() Experimental

Controls whether the captured tab or window will be focused or whether the focus will remain with the tab containing the capturing app.



// Create a new CaptureController instance
const controller = new CaptureController();

// Prompt the user to share a tab, window, or screen.
const stream = await navigator.mediaDevices.getDisplayMedia({ controller });

// Query the displaySurface value of the captured video track
const [track] = stream.getVideoTracks();
const displaySurface = track.getSettings().displaySurface;

if (displaySurface == "browser") {
  // Focus the captured tab.
} else if (displaySurface == "window") {
  // Do not move focus to the captured window.
  // Keep the capturing page focused.


Browser compatibility

Desktop Mobile
Chrome Edge Firefox Internet Explorer Opera Safari WebView Android Chrome Android Firefox for Android Opera Android Safari on IOS Samsung Internet
CaptureController 109 109 No No 95 No No No No No No No
CaptureController 109 109 No No 95 No No No No No No No
setFocusBehavior 109 109 No No 95 No No No No No No No

See also

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