Second Screen WG/CG - TPAC 2022 agenda

[anssiko]

🚧 This issue is to work out an agenda for the Second Screen WG/CG TPAC 2022 hybrid meeting.

Registration

TPAC registration will open end of June, register via https://www.w3.org/2022/09/TPAC/#registration

Logistics

• Venue: Sheraton Vancouver Wall Centre in-person & remote
• ⏰ 16 Sep 2022 15:00 UTC - 21:00 UTC (see your local time) - 🗓️ Calendar
  • ⏰ Start: 8:00 Vancouver / 15:00 UTC
  • ⏰ Morning break: 10:00-10:15 Vancouver / 17:00-17:15 UTC
  • ⏰ Lunch: 11:30-12:30 Vancouver / 18:30-19:30 UTC
  • ⏰ End: 14:00 Vancouver / 21:00 UTC
• 📞 For Zoom details, see the meeting Calendar
• ✍️ IRC or irc://irc.w3.org:6667/#webscreens
• Schedule (Vancouver local time):

Agenda

Feedback and suggestion on specific agenda items welcome via comments. 👇

⏰ Start: 8:00 Vancouver / 15:00 UTC

Welcome

• Agenda bashing
• Patent Advisory Group report @anssiko @tidoust

Virtual Display proposal

• Discuss synergies with efforts to improve automated testing coverage for Web APIs targeting multi-screen devices e.g. Multi-Screen Window Placement API. @michaelwasserman @anssiko
• Related efforts:
  • WIP Chromium test framework support for managing virtual displays at the OS level
  • Virtual Display use case exploration

(Remote participant interest, earlier time slot preference)

Remote Playback API

• Testing Remote Playback API tests and implementation report remote-playback#92, implementation report @louaybassbouss @FritzHeiden Slides

⏰ Morning break: 10:00-10:15 Vancouver / 17:00-17:15 UTC

Multi-Screen Window Placement API

• Slides: Multi-Screen Window Placement
• Post-FPWD Rec Track expectations @anssiko
• CSS OM View, Fullscreen & HTML extensions @michaelwasserman
• New Security Considerations @michaelwasserman
• Disseminate any new information from Mozilla's position Window Management mozilla/standards-positions#542, TAG review Multi-Screen Window Placement on the Web - Initiating Multi-Screen Experiences w3ctag/design-reviews#767, others outside the WG @michaelwasserman

Open Screen Protocol

• Slides: Open Screen Protocol
• Selected security-tracker issues & open PRs @mfoltzgoogle
  • [Security] Describe encoding/decoding of PSK into numeric and QR codes. openscreenprotocol#210 and Adds appendix with PSK specifications. openscreenprotocol#296
  • Adjust cipher and signature algorithm preference list for hardware openscreenprotocol#218 and Simplify TLS requirements so we don't have to recommend algorithms. openscreenprotocol#297
  • Update SPAKE2 section according to current IETF draft openscreenprotocol#235 and Update for SPAKE2 openscreenprotocol#294
  • Agent Certificate has a circular dependency on itself openscreenprotocol#276 and Add an algorithm for setting the agent certificate serial number openscreenprotocol#293
  • Consider removing support for P-521 openscreenprotocol#277 and Remove P-521 curve from agent certificate requirements openscreenprotocol#295
  • Do not use Distinguished Name to convey protocol details openscreenprotocol#278
  • The keyUsage name is digitalSignature, not signing openscreenprotocol#279, Clarify the supported signature algorithms for certificates openscreenprotocol#280, and Fixes algorithm and signing fields in agent certificate. openscreenprotocol#288
  • Certificates should have a maximum lifetime, and SPAKE2 identities should be SPKI not cert fingerprint openscreenprotocol#282 and Define the agent fingerprint as the SPKI. openscreenprotocol#301
• Proposal for codec name sharing with the media APIs Use the same codec names as the media APIs. openscreenprotocol#233 @mfoltzgoogle
• Proposal for adding HDR metadata to video capabilities Add transfer-functions and hdr-metadata to video-capabilities. openscreenprotocol#300 @mfoltzgoogle

⏰ Lunch: 11:30-12:30 Vancouver / 18:30-19:30 UTC

Presentation API

• Site-initiated mirroring @takumif

(Remote participant, late time slot preference, we try to target ~13:00 Vancouver / ~20:00 UTC)

Wrap up

Wrap up the meeting, agree on next steps.

⚠️ Topics deferred to a future meeting

Connectivity Standards Alliance coordination

Defer this discussion until after the Matter 1.0 spec is publicly available. Proposal to organize a separate meeting focused on CSA topics.

• Areas of investigation:
  • Matter's pairing ceremony and Open Screen authentication
  • Interop between Matter and Open Screen transports
  • Data models for media streaming and media/application control

(Matter 1.0 spec publication schedule may impact the scope of this discussion.)

Minutes

• Second Screen TPAC 2022 meeting minutes

Participants

All registered Second Screen WG and CG participants welcome.

Remote participation considerations

• @takumif prefers a Tokyo remote friendly time slot
• @song-fangzhen prefers a Beijing remote friendly time slot for Virtual Display test automation discussion

[anssiko]

Our agenda is close to final. Thanks @mfoltzgoogle @michaelwasserman @takumif and other folks who contributed to this collaborative agenda building exercise.

Any last-minute additions, please chime in here.