TTWG Meeting 2025-09-25 #316
Description
Agenda
1. This meeting
2. DAPT
2.1 Publication of a CR Snapshot
2.2 Test suite and implementation report
2.3 Issues and pull requests for discussion
3. IMSC 1.3
3.1 Wide Review
3.1.1 Incoming liaison from ARIB
3.2 Issues and pull requests for discussion
4. WebVTT open issues
4.1 w3c/webvtt#531 WebVTT should allow pages to modify the caption display area
5. TPAC 2025 planning
AOB – please notify of any other AOB now!
6. Meeting close
Time and Joining Details: 15:00 - 16:00 (1 hours) UTC
Please be ready for a prompt start at 15:03am UTC time.
Our teleconference is scheduled with reference to UTC Time, the correct time of this teleconference in your locale may change.
Check https://www.timeanddate.com/worldclock/fixedtime.html?iso=20250925T15&p1=1440
See W3C Calendar link for joining details: https://www.w3.org/events/meetings/9a02c5b2-2477-4f86-b3c0-1fde51dcc796/20250925T150000/
(if you can't see the joining details and wish to join please contact me)
Future meetings and recent activity:
See the TTWG project board for upcoming meetings.
See individual agenda items for recent activity on specific products.
See the TTWG home page for links to repositories and recent activity.
Agenda+ This meeting
Assign Roles
Chair: Nigel, Gary
Regrets:
Scribe:
Previous meeting: https://www.w3.org/2025/09/11-tt-minutes.html
Prioritise discussion for this meeting and look ahead
Check-point for order of topics and any other business.
DAPT
Latest publication: CRD (currently 2025-09-23) published at https://www.w3.org/TR/DAPT/
See https://github.com/w3c/dapt/discussions where the discussions live.
Status update on next steps:
- Address open issues, merge pull requests etc
Since the last meeting:
- issues opened or open and updated: 4
- issues closed: 3 but 1 was spam
- pull requests closed: 4, 3 merged, the other a test
2 pull requests open:
- Use
undin place of an emptydaptm:langSrcdapt#322 Usezxxin place of an emptydaptm:langSrc - [test PR] Update CODE_OF_CONDUCT.md on its title dapt#318 [test PR] Update CODE_OF_CONDUCT.md on its title
Publication of a CR Snapshot
This is being tracked under w3c/dapt#307
Current status: received HR feedback from Privacy (closed no concerns) and Internationalisation (#320 and #321 opened); awaiting HR feedback from the other groups.
Test suite and implementation report
Test repo: https://github.com/w3c/dapt-tests
Implementation Report https://www.w3.org/wiki/TimedText/DAPT_Implementation_Report
There is 1 open issue (w3c/dapt-tests#39) and 1 corresponding pull request (w3c/dapt-tests#40) on the test suite, which both relate to the Internationalisation feedback.
Next steps: add implementations to the Implementation Report
Issues and pull requests for discussion
Other issues and pull requests flagged for agenda are at https://github.com/w3c/dapt/labels/agenda - currently 3 items flagged, all related to the Internationalisation feedback.
IMSC 1.3
Any issues or pull requests flagged for the agenda - currently no items flagged
3 pull requests open:
- Improve the ja character set per ARIB feedback imsc#614 Improve the ja character set per ARIB feedback
- Make the reference to The Unicode Standard undated imsc#618 Make the reference to The Unicode Standard undated
- Remove editor's note at K. Privacy and Security imsc#619 Remove editor's note at K. Privacy and Security
Wide Review
Outgoing liaison messages sent 24 July 2025, archived (member-only) at https://lists.w3.org/Archives/Member/member-tt/2025Jul/
We requested feedback by September 15. Feedback was received from ARIB.
Wide review tracking issue, including horizontal review: w3c/imsc#608
HR status: TAG, Privacy closed with no concerns. No formal response from anyone else but I see that Accessibility is considering whether any feedback is needed concerning screen readers and superscript/subscript, in particular if the CSS vertical-align property is used (@nigelmegitt pointed out that we are using font-variant-position but that does not mean it is not a legitimate concern).
Incoming liaison from ARIB
Member-only email: https://lists.w3.org/Archives/Member/member-tt/2025Sep/0000.html
Discuss suggestions
Issues and pull requests for discussion
Other issues and pull requests flagged for agenda are at https://github.com/w3c/imsc/labels/agenda - currently 3 items flagged
WebVTT open issues
w3c/webvtt#531 WebVTT should allow pages to modify the caption display area
Agenda+ TPAC 2025 planning
TPAC 2025 will be 10 to 14 November 2025 in Kobe, Japan
Schedule is available at https://www.w3.org/2025/11/TPAC/schedule.html
Wiki page for the meeting at https://www.w3.org/wiki/TimedText/tpac2025
Gather agenda topics
Agenda+ AOB
Agenda+ Meeting close
Next meeting is 2025-10-09
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