Ready for Developer Testing: Media Previews opt-out

[mark a. foltz]

Contact emails

mfo...@chromium.org, bryantc...@chromium.org

Explainer

None

Specification

https://docs.google.com/document/d/1ZnX2JROjr9l4y2_OPMpfVlLOo-A5cQzD4mWarj9kXQ0/edit

Design docs

https://docs.google.com/document/d/1ZnX2JROjr9l4y2_OPMpfVlLOo-A5cQzD4mWarj9kXQ0/edit

Summary

Allow coordination between sites using Page Embedded Permissions Controls and concurrent experiments with the camera and microphone permissions UI in Chrome.

Blink component

Blink>MediaStream

TAG review

None

TAG review status

Not applicable

Risks

Interoperability and Compatibility

None as this feature concerns the functionality of Chrome's permissions UI, and does not change the behavior of the APIs that are gated by it: navigator.mediaDevices.enumerateDevices and navigator.mediaDevices.getUserMedia Other browsers implement their own permissions UIs independently of Chrome.

Gecko: N/A

WebKit: N/A

Web developers: No signals

Other signals:

Ergonomics

N/A

Activation

N/A

Security

N/A

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

Goals for experimentation

Ongoing technical constraints

There are no plans to add media previews to Chrome on platforms other than Windows/Mac/Linux.

Debuggability

N/A

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

No

There are currently no plans to launch previews outside of Windows/Mac/Linux.

Is this feature fully tested by web-platform-tests?

No

N/A

DevTrial instructions

https://tinyurl.com/yc6mvth8

Flag name on chrome://flags

--enable-features=camera-mic-preview

Finch feature name

CameraMicPreview

Requires code in //chrome?

False

Tracking bug

https://issues.chromium.org/330762482

Launch bug

https://launch.corp.google.com/launch/4304480

Estimated milestones

Origin trial desktop first	125
Origin trial desktop last	136
DevTrial on desktop	122

Link to entry on the Chrome Platform Status

https://chromestatus.com/feature/5100528783851520

This intent message was generated by Chrome Platform Status.

[Philipp Hancke]

Interesting, this goes in the direction of

  https://github.com/w3c/mediacapture-extensions/issues/2

which I had considered "that ship has sailed". The spec landed

  https://w3c.github.io/mediacapture-extensions/#camera%20and%20microphone%20picker

but I don't recall any implementations.

Will this be wired up to the "semantics" field?

It seems that choosing the output device is missing, that is a quite common feature.

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