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Define tab capture #60

alvestrand opened this issue Jun 18, 2018 · 5 comments · May be fixed by #121


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commented Jun 18, 2018

The nonstandard use of getUserMedia for screen capture included the option of capturing from browser tabs. This has proved popular.

The spec should mention that this is a possibility - while tabs can be seen as a special case of "application window", they are mostly perceived as their own thing.


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commented Jun 20, 2018

Isn't a tab the 'browser' display surface?


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commented Jul 3, 2018

I thought we closed a similar issue on tab sharing as no changes needed for the specification.

Here are the relevant details:

"Consensus from the April VI was for option 2. which requires no change to the specification. See slides here:

@alvestrand are we opening it up again ?


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commented Aug 2, 2018

@suhasHere While option 2 doesn’t require a normative change, it probably does require some explanation.


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commented Sep 15, 2019

Current document has in "terminology":

A browser display surface is the rendered form of a single document. This is not strictly limited to HTML [HTML5] documents, though the discussion in this document will address some specific concerns with the capture of HTML.

Suggest adding "The UA may choose to display the current document in a browser window, continuing to cast the current document into the same media stream track when the current document changes. This is commonly called tab capture."


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commented Sep 25, 2019

RESOLUTION: Use 'browsing context' as tab capture

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