The MediaTrackSettings dictionary's displaySurface property indicates the type of display surface being captured.


displaySurface = mediaTrackSettings.displaySurface;


The value of displaySurface is a string that comes from the DisplayCaptureSurfaceType enumerated type, and is one of the following:

The stream's video track contains all of the windows belonging to the application chosen by the user. The windows are aggragated into a single video track, with any empty space filled with a backdrop; that backdrop is selected by the user agent.
The stream's video track presents the entire contents of a single browser tab which the user selected during the getDisplayMedia() call.
The video track in the stream presents the complete contents of one or more of the user's screens. Any empty space (if the displays are of different dimensions) is filled with a backdrop chosen by the user agent.
The stream's video track presents the contents of a single window selected by the user. The window may be from any application, not necessarily just from within the user agent.

Not all user agents support all of these surface types.


Specification Status Comment
Screen Capture
The definition of 'MediaTrackSettings.displaySurface' in that specification.
Working Draft Initial definition

Browser compatibility

Update compatibility data on GitHub
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
displaySurfaceChrome Full support 71Edge Full support ≤79Firefox No support NoIE No support NoOpera Full support YesSafari ? WebView Android Full support 71Chrome Android Full support 71Firefox Android No support NoOpera Android ? Safari iOS ? Samsung Internet Android Full support 10.0


Full support  
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Compatibility unknown  
Compatibility unknown

See also