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MediaTrackSupportedConstraints: displaySurface property

The MediaTrackSupportedConstraints dictionary's displaySurface property indicates whether or not the displaySurface constraint is supported by the user agent and the device on which the content is being used.

The supported constraints list is obtained by calling navigator.mediaDevices.getSupportedConstraints().

Value

A Boolean value which is true if the displaySurface constraint is supported by the device and user agent.

Examples

This method sets up the constraints object specifying the options for the call to getDisplayMedia(). It adds the displaySurface constraint (requesting that only fullscreen sharing be allowed) only if it is known to be supported by the browser. Capturing is then started by calling getDisplayMedia() and attaching the returned stream to the video element referenced by the variable videoElem.

js

async function capture() {
  let supportedConstraints = navigator.mediaDevices.getSupportedConstraints();
  let displayMediaOptions = {
    video: {},
    audio: false,
  };

  if (supportedConstraints.displaySurface) {
    displayMediaOptions.video.displaySurface = "monitor";
  }

  try {
    videoElem.srcObject =
      await navigator.mediaDevices.getDisplayMedia(displayMediaOptions);
  } catch (err) {
    /* handle the error */
  }
}

Specifications

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
displaySurface 107 107 No No 93 11.1 107 107 No 73 11.3 21.0

See also

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Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/API/MediaTrackSupportedConstraints/displaySurface