Physical and logical resolution for screen-capture MediaStreamTracks

[guidou]

こんにちは TAG-さん!

I'm requesting an early TAG design review of "Physical and logical resolution for screen-capture MediaStreamTracks".

The idea is to expose the physical and logical resolution of a captured surface in MediaStreamTracks sourced from screen capture. The physical resolution is the size of the captured surface in pixels, and the logical resolution is the physical resolution divided by any scaling factor applied by the underlying operating system and/or the UA via page zoom.

• Explainer¹: https://github.com/guidou/mediacapture-extensions/blob/main/explainer-pixels.md
• User research: N/A
• Security and Privacy self-review²: https://github.com/guidou/mediacapture-extensions/blob/main/pixels_sp_questionnaire.md
• GitHub repo: https://github.com/w3c/mediacapture-screen-share/pull/315/files
• Primary contacts:
  • Guido Urdaneta (@guidou), Google
  • Palak Agarwal (@palak8669), Google
• Organization/project driving the design:
• Multi-stakeholder feedback³:
  • Chromium comments:
  • Mozilla comments: Minor addition to existing spec. Comments available here.
  • WebKit comments: Minor addition to existing spec. Comments available here.
  • {{...include feedback/review from developers, implementers, civil society, and others}}

Further details:

• [X ] I have reviewed the TAG's Web Platform Design Principles
• The group where the incubation/design work on this is being done (or is intended to be done in the future): WebRTC WG
• The group where standardization of this work is intended to be done ("unknown" if not known): WbeRTC WG
• Existing major pieces of multi-implementer review or discussion of this design: See Add physical and logical resolution. w3c/mediacapture-screen-share#315
• Major unresolved issues with or opposition to this design: Nothing major so far. Tracked at Add support for physical and logical resolution w3c/mediacapture-screen-share#316
• This work is being funded by: Google