RestrictionTarget

Limited availability

The RestrictionTarget interface of the Screen Capture API provides a static method, fromElement(), which returns a RestrictionTarget instance that can be used to restrict a captured video track to a specified DOM element.

Static methods

• fromElement() Experimental
  • : Returns a RestrictionTarget instance that can be used to restrict a captured video track to a specified DOM element (plus its descendants).

Examples

// Options for getDisplayMedia()
const displayMediaOptions = {
  preferCurrentTab: true,
};

// Create restriction target from DOM element
const demoElem = document.querySelector("#demo");
const restrictionTarget = await RestrictionTarget.fromElement(demoElem);

// Capture video stream from user's webcam and isolate video track
const stream =
  await navigator.mediaDevices.getDisplayMedia(displayMediaOptions);
const [track] = stream.getVideoTracks();

// Restrict video track
await track.restrictTo(restrictionTarget);

// Broadcast restricted stream in <video> element
videoElem.srcObject = stream;

See Using the Element Capture and Region Capture APIs for in-context example code.

Specifications

Browser compatibility

See also

• Screen Capture API
• Using the Element Capture and Region Capture APIs