Contact emails

fbeauf...@google.com

elada...@google.com

Explainer

https://github.com/eladalon1983/screen-share-explainers/blob/main/monitorTypeSurfaces_Explainer.md

Specification

https://w3c.github.io/mediacapture-screen-share/#dom-displaymediastreamoptions-monitortypesurfaces

Summary

When getDisplayMedia() is called, the browser offers the user a choice of
display surfaces: tabs, windows, or monitors. Using the monitorTypeSurfaces
option, the web application may now hint to the browser if it prefers to
include display surfaces whose type is monitor among the choices offered to
the user.

Blink component

Blink>GetDisplayMedia
<https://bugs.chromium.org/p/chromium/issues/list?q=component:Blink%3EGetDisplayMedia>

TAG review

https://github.com/w3ctag/design-reviews/issues/892

TAG review status

Pending

Risks
Interoperability and Compatibility

None

Gecko: No signal (https://github.com/mozilla/standards-positions/issues/876)
Jan-Ivar Bruaroey from Mozilla has reviewed and approved
https://github.com/w3c/mediacapture-screen-share/pull/274.

WebKit: No signal (https://github.com/WebKit/standards-positions/issues/248)
Youenn Fablet from Apple has participated in
https://www.w3.org/2023/06/27-webrtc-minutes.html#t04 and
https://github.com/w3c/mediacapture-screen-share/issues/261#issuecomment-1693090386
.

Web developers: Positive Cisco folks have expressed interest in this
feature.
https://github.com/screen-share/meetings/blob/main/minutes/2023-03-21.md?plain=1#L161

Other signals:

WebView application risks

Does this intent deprecate or change behavior of existing APIs, such that
it has potentially high risk for Android WebView-based applications?

None


Debuggability

None

Will this feature be supported on all six Blink platforms (Windows, Mac,
Linux, Chrome OS, Android, and Android WebView)?

Supported on all platforms that support getDisplayMedia. Namely, all
desktop platforms.

Is this feature fully tested by web-platform-tests
<https://chromium.googlesource.com/chromium/src/+/main/docs/testing/web_platform_tests.md>
?

Yes. See https://wpt.fyi/results/screen-capture/getdisplaymedia.https.html

Flag name on chrome://flags

None

Finch feature name

MonitorTypeSurfaces

Requires code in //chrome?

Yes. In chrome/browser/media/webrtc/display_media_access_handler.cc

Tracking bug

https://bugs.chromium.org/p/chromium/issues/detail?id=1477706

Estimated milestones

Shipping on desktop

119

Anticipated spec changes

Open questions about a feature may be a source of future web compat or
interop issues. Please list open issues (e.g. links to known github issues
in the project for the feature specification) whose resolution may
introduce web compat/interop risk (e.g., changing to naming or structure of
the API in a non-backward-compatible way).

None

Link to entry on the Chrome Platform Status

https://chromestatus.com/feature/5558622137876480

This intent message was generated by Chrome Platform Status
<https://chromestatus.com/>.

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