Contact [email protected]

Explainer
https://docs.google.com/document/d/1OmuV1W4f2UvToeNxUVGHv8NcFuL63r94gWwz9i_-VBc/edit?usp=sharing

Specificationhttps://github.com/w3c/mediacapture-screen-share/pull/164/files

Summary

Consider a Web application APP which is display-capturing a tab TAB. We add
a mechanism by which APP may control whether the audio playing in TAB would
be played out of the user’s local speakers.


Blink componentBlink
<https://bugs.chromium.org/p/chromium/issues/list?q=component:Blink>

Motivation

A common scenario in corporate settings is for several users to gather in a
shared physical room, and for one of them to use their laptop and VC
software to share a tab to a large monitor in that room. Often, audio is
also played out over the room’s speakers. (Because these speakers are
typically louder than the laptop’s speakers, and because this way, audio is
in-sync with the video played out over the monitor.)


Initial public proposal
https://github.com/w3c/mediacapture-screen-share/issues/161

TAG reviewN/A. This is just an addition of a single flag to an existing
dictionary, following well-known patterns.

TAG review statusNot applicable

Risks


Interoperability and Compatibility



*Gecko*: Positive (https://github.com/mozilla/standards-positions/issues/641)
Jan-Ivar Bruaroey from Mozilla, and Youenn Fablet from Apple, have both
collaborated with us closely in shaping this PR. They have then approved
merging this PR into w3c/mediacapture-screen-share. This is implicit
support, so I'd consider it POSITIVE even though, as of the time of this
writing, the official request for position has not yet been answered.

*WebKit*: Positive (
https://lists.webkit.org/pipermail/webkit-dev/2022-May/032252.html)
Jan-Ivar Bruaroey from Mozilla, and Youenn Fablet from Apple, have both
collaborated with us closely in shaping this PR. They have then approved
merging this PR into w3c/mediacapture-screen-share. This is implicit
support, so I'd consider it POSITIVE even though, as of the time of this
writing, the official request for position has not yet been answered.

*Web developers*: Positive * This was requested by multiple Web-dev teams
inside of Google. * External developers have asked for a different change
in Chrome, which we'll be able to uncontroversially affect only once this
API surface is shipped - see crbug.com/1317964 for some details.

*Other signals*:

WebView application risks

N/A

Debuggability

N/A


Is this feature fully tested by web-platform-tests
<https://chromium.googlesource.com/chromium/src/+/main/docs/testing/web_platform_tests.md>
?No

Estimated milestones

No milestones specified


Link to entry on the Chrome Platform Status
https://chromestatus.com/feature/5201258309746688

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

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