TTWG Meeting 2024-09-27 TPAC In person / hybrid all day

[nigelmegitt]

See also the TTWG Wiki page for TPAC 2024.

[cookiecrook]

I'd love to get this PR merged, or discuss any blocking feedback...

• New ATTRIBUTES block webvtt#523

Above PR resolves:

• VTT Metadata Cue format is ambiguous; some metadata may be unintentionally presented to the user in a context outside HTML webvtt#511

As you're aware, the motivating use case is to enable a new web standard accessibility feature for conveying times of flashing lights common in movies and other streaming video. The above issue and PR are effectively blocking prerequisites for:

• VTT Type Proposal for time-coded general-flash metadata  webvtt#512

We should meet either way, since even if PR 523 is resolved by then, there could be additional discussion for how to manage the registry of different metadata type values (e.g. "video.strobing.general-flash") and their respective specifications, including but not limited to the flashing lights use case.

[nigelmegitt]

Agenda+ @palemieux present considerations for a new edition of IMSC

[nigelmegitt]

Agenda+ @nigelmegitt Run-through of work needed to take TTML2 Second Edition from CR to Rec.

[nigelmegitt]

Agenda+ request from @marcoscaceres to present and discuss on improvements to WebVTT Interop testing, 30-45 minutes.

[gkatsev]

@cookiecrook hey, we're looking to schedule a slot for WebVTT for Friday afternoon. I was wondering if you had any time constraints on that. Thanks!

[nigelmegitt]

@eric-carlson expressed a preference to complete WebVTT items by 3pm when he will need to leave.

[cookiecrook]

I can work around Eric's schedule. The following are the times I can be available on Thursday and Friday

• 10:30–lunch Thursday
• 4:00–close Thursday
• 9:00–11:00 Friday
• Anytime Friday afternoon

[cookiecrook]

With @gkatsev’s feedback this week on w3c/webvtt#523, I have enough to work on. Thank you!

Happy to meet Friday if you’d still like to, or I can yield that time. Either is fine with me.

[nigelmegitt]

Topics

DAPT
    Resolving remaining CR must-have issues
    Proposal to request transition to CR
TTML2 Second Edition
    Editor
    Tasks needed to take it from CR to Rec
    Which version should the "outdated" banner point to in the [January 2020 CR](https://www.w3.org/TR/2020/CR-ttml2-20200128/)?
IMSC
    Work on a new edition?
TTML Profile Registry
    Make it into a proper modern-style Registry?
WebVTT
    Improvements to WebVTT Interop testing
    [w3c/webvtt#253](https://github.com/w3c/webvtt/pull/523) New ATTRIBUTES block
    [w3c/webvtt#512](https://github.com/w3c/webvtt/issues/512) VTT Type Proposal for time-coded general-flash metadata
DataCue
Next Generation TextTrackCue
Joint meeting follow-ups
    M&E IG
    Media WG
    APA WG
AOB
    Demo slots if time allows

Agenda for today:

• 09:00-09:10 Introductions
• 09:10-09:25 Agenda bash
• 09:30-09:45 Netflix TTAL <--> DAPT demo
• 09:45-10:00 Streamable Text Tracks
• 10:00-10:30 IMSC

10:30-11:00 break

• 11:00-12:30 Accessible Platform Architectures WG, Timed Text WG, Media and Entertainment IG Joint Meeting

12:30-14:00 lunch

• 14:00-15:00 WebVTT Interop and issues
• 15:00-15:30 DAPT
• 16:00-16:15 TTML2
• 16:15-16:30 TTML Profile Registry
• 16:30-17:00 Joint meeting follow-ups - MEIG, Media WG, APA WG
• 17:00-18:00

[nigelmegitt]

Minutes at https://www.w3.org/2024/09/27-tt-minutes.html