{agenda} TTWG Meeting 2018-05-10

This meeting is scheduled for up to 120 minutes.
Please be ready for a prompt start at 10:03am Boston time.

Our teleconference is scheduled with reference to Boston Time, the correct time of this teleconference in your locale may change.

Check https://www.timeanddate.com/worldclock/fixedtime.html?iso=20180510T10&p1=43

Thursdays 10:03am-12:00pm Boston local

Joining details:

see https://lists.w3.org/Archives/Member/member-tt/2016Oct/0009.html
(members-only link – if you can't see this and wish to join please contact me)

Agenda+ Assign Roles

Chairs: Nigel Megitt

Scribe: usually Nigel – open to offers!

Regrets: Thierry, Andreas

Activity since last meeting:
See individual agenda items for recent activity on specific products

Cross-product TTWG board: http://www.w3.org/AudioVideo/TT/board/
We are still using tracker for actions unrelated to issues.
Please do not add or modify issues in tracker!

IMSC: https://github.com/w3c/imsc/pulse
TTML1: https://github.com/w3c/ttml1/pulse
TTML2: https://github.com/w3c/ttml2/pulse
TTML Profile Registry: https://github.com/w3c/tt-profile-registry/pulse
TTML-WebVTT mapping: https://github.com/w3c/ttml-webvtt-mapping/pulse
WebVTT: https://github.com/w3c/webvtt/pulse

Agenda+ Prioritise discussion for this meeting and look ahead

Check-point for order of topics – I'd suggest, subject to reordering:
1. TTWG Charter
2. TTML1 Actions, Pull Requests and Issues
3. TTML2 Actions, Pull Requests and Issues
4. IMSC Actions, Pull Requests and Issues
5. IMSC vNext requirements Actions, Pull Requests and Issues
6. CSS Actions Review
7. WebVTT (David Singer to Chair if present)
8. HDR in PNG (placeholder)
9. AOB – please notify of any other AOB now!


Reminder re future milestones and meetings:

May meetings:

Thursday 17th May: TTWG meeting ? Hour(s)
Thursday 24th May: No TTWG meeting
Thursday 31st May: TTWG meeting ? Hour(s)

IMSC 2 and TTML2 publication events: see the timeline of upcoming work at https://www.w3.org/wiki/TimedText/Publications#Timeline_of_TTML2_and_IMSC2_work

Further ahead:

Thursday 7th June: TTWG meeting ? Hour(s)
Thursday 14th June: TTWG meeting ? Hour(s)
Thursday 21st June: TTWG meeting ? Hour(s)
Thursday 28th June: TTWG meeting ? Hour(s)

Agenda+ TTWG Charter

What is the current status, and what do we need to do next…

Draft charter issues: https://github.com/w3c/charter-timed-text/issues
Draft charter document: https://w3c.github.io/charter-timed-text/Draft-2018-TTWG-Charter.html

Since beginning AC review, 2 issues have been opened:

 2 Issues created by 2 people
Opened #28 Shorten horizontal review period<https://github.com/w3c/charter-timed-text/issues/28>
Opened #27 Revert Decision Policy?<https://github.com/w3c/charter-timed-text/issues/27>

 1 Pull request proposed by 1 person
Proposed #29 Ac review<https://github.com/w3c/charter-timed-text/pull/29>

Agenda+ TTML1 Actions, Pull Requests and Issues

Actions

None in Tracker

Next steps to complete the TTML1 3rd Ed implementation report?

https://www.w3.org/wiki/TTML1-3ED_implementation_report

Request to create a ttml1-tests repository.

Recent Activity

TTML1 3rd Edition CR was published on 24th April at https://www.w3.org/TR/2018/CR-ttml1-20180424/ (and pointed to by https://www.w3.org/TR/ttml1/ also).

No pull requests opened or issues closed.

Pull Requests To Review (if discussion requested)

No new pull requests opened


New (and old) Issues and Pull Requests to Discuss

No older pull requests open.

(Plus unresolved issues with ongoing conversations, to be confirmed.)

 1 Issue created by 1 person
Opened #352 Consider moving (Third Edition) to a subtitle<https://github.com/w3c/ttml1/issues/352>

No issues or pull requests marked for the agenda


Links

TTML1 issues and pull requests labelled for the agenda: https://github.com/w3c/ttml1/labels/agenda
TTML1 issues blocked: https://github.com/w3c/ttml1/labels/blocked
Current open issues: https://github.com/w3c/ttml1/issues
Most recent TTML1 3rd Edition CR: https://www.w3.org/TR/2018/CR-ttml1-20180424/

Agenda+ TTML2 Actions, Pull Requests and Issues

Actions

No overdue actions

What needs to be done to complete the TTML2 implementation report?

https://www.w3.org/wiki/TTML/TTML2ImplementationReport

Request to create a ttml2-tests repository.

Recent Activity

No pull requests merged or issues closed.

Pull Requests open for review (to discuss if requested):

No pull requests opened.

Plus 7 pull requests open for longer:


Proposed #716 Change tts:luminanceGain to non-inheritable (#715).<https://github.com/w3c/ttml2/pull/716>
Proposed #705 Improve constraint/clarification semantics for animate element (#700).<https://github.com/w3c/ttml2/pull/705>
Proposed #707 Remove @style from animate and set (#703).<https://github.com/w3c/ttml2/pull/707>
Proposed #701 Fix schema typos and missing specification syntax for definition of '…<https://github.com/w3c/ttml2/pull/701>
Proposed #651 Update requirements for claim of document (content) compliance (#495).<https://github.com/w3c/ttml2/pull/651>
Proposed #652 Resolve confusion between default and implicit (#590).<https://github.com/w3c/ttml2/pull/652>
Proposed #665 Clarify that metadata has no presentation semantics (#656).<https://github.com/w3c/ttml2/pull/665>



New (and old) Issues and Pull Requests to discuss:

(Plus unresolved issues with ongoing conversations, to be confirmed.)
TTML2 issues and pull requests labelled for the agenda: https://github.com/w3c/ttml2/labels/agenda

 6 Issues created by 2 people
Opened #728 Reflect tts:opacity applicability expansion in features<https://github.com/w3c/ttml2/issues/728>
Opened #727 Definition of implicit inline region<https://github.com/w3c/ttml2/issues/727>
Opened #726 Derivation of tts:textEmphasis incorrect<https://github.com/w3c/ttml2/issues/726>
Opened #725 tts:textCombine="digits" fallback<https://github.com/w3c/ttml2/issues/725>
Opened #724 `<text-combine>` specifies `auto` instead of `all`<https://github.com/w3c/ttml2/issues/724>
Opened #723 tts:textShadow direction depends on writing direction<https://github.com/w3c/ttml2/issues/723>

No  Issues or Pull requests currently marked as Agenda.

Links

Most recent CR published at https://www.w3.org/TR/2018/CR-ttml2-20180313/
Current ED available at https://w3c.github.io/ttml2/

Current open issues:  https://github.com/w3c/ttml2/issues
See spreadsheet of editorial actions at https://github.com/w3c/ttml2/blob/master/spec/ednotes.xlsx
Edit/build instructions now in README in ttml2/spec/ at https://github.com/w3c/ttml2/blob/master/spec/README.md



Agenda+ IMSC Actions, Pull Requests and Issues

Actions

As per https://www.w3.org/2018/03/22-tt-minutes.html#resolution01 request transition of IMSC 1.1 to CR.


Recent Activity

 2 Releases published by 1 person
Published imsc1.0.1-REC-20180424
Published imsc1.1-CR-20180503


 3 Pull requests merged by 1 person
Merged #378 Move master to IMSC 1.1<https://github.com/w3c/imsc/pull/378>
Merged #371 IMSC 1.1 CR1<https://github.com/w3c/imsc/pull/371>
Merged #346 IMSC1.0.1-REC<https://github.com/w3c/imsc/pull/346>

 1 Issue closed by 1 person
Closed #340 Incorrect URL reference to EBU-TT-D 1.0<https://github.com/w3c/imsc/issues/340>


Pull Requests To Review (if discussion requested)

 1 Pull request proposed by 1 person
Proposed #379 General update<https://github.com/w3c/imsc/pull/379>

No pull requests open for longer


New (and old) Issues to Discuss

 1 Issue created by 1 person
Opened #380 Mention #extent-version-2 tts:extent value restriction in §6<https://github.com/w3c/imsc/issues/380>

No issues currently labelled as agenda.

Links

IMSC issues and pull requests labelled for the agenda: https://github.com/w3c/imsc/labels/agenda :
IMSC issues blocked: https://github.com/w3c/imsc/labels/blocked

IMSC 1.0.1
Editor's draft is directly viewable at http://w3c.github.io/imsc/imsc1/spec/ttml-ww-profiles.html
IMSC 1.0.1 Rec published at https://www.w3.org/TR/2018/REC-ttml-imsc1.0.1-20180424/
IMSC 1 Rec available at https://www.w3.org/TR/2016/REC-ttml-imsc1-20160421/ - we have resolved to supersede this in favour of 1.0.1
Patent policy call for exclusions sent 2017-02-03, archived at https://lists.w3.org/Archives/Public/public-tt/2017Feb/0006.html

IMSC Implementation Page: https://www.w3.org/wiki/TimedText/IMSC1_implementation_page.
IMSC Tests repository: https://github.com/w3c/imsc-tests

IMSC 1.1 FPWD: https://www.w3.org/TR/2017/WD-ttml-imsc1.1-20171017/

Unicode CLDR discussion
Unicode ticket is at http://unicode.org/cldr/trac/ticket/8915
Pierre's response to the recent update is at http://unicode.org/cldr/trac/ticket/8915#comment:9
Email response from Shervin at Unicode https://lists.w3.org/Archives/Public/public-tt/2016Dec/0018.html


Agenda+ IMSC vNext Requirements


Links

IMSCvNext Requirements editor's draft: https://w3c.github.io/imsc-vnext-reqs/
IMSCvNext Requirements repository: https://github.com/w3c/imsc-vnext-reqs

Recent Activity

No pull requests merged or issues closed.

Pull requests for review (to discuss if requested)

No pull requests proposed or open.


PROPOSAL: Publish IMSC v1.1 Requirements as a WG Note

No issues or pull requests currently marked for the agenda.

No new issues created. No issues marked for the agenda at this time.

Links

IMSC Requirements issues labelled for the agenda: https://github.com/w3c/imsc-vnext-reqs/labels/agenda :
IMSC Requirements issues blocked: https://github.com/w3c/imsc-vnext-reqs/labels/blocked


Agenda+ CSS actions review

For reference, we have the following CSS issues open:

[css-sizing][css-align][css-text] Aligning an aligned block of text within its container <https://github.com/w3c/csswg-drafts/issues/1975> TTML<https://github.com/w3c/csswg-drafts/issues?q=is%3Aissue+is%3Aopen+ttml+label%3ATTML>css-align-4<https://github.com/w3c/csswg-drafts/issues?q=is%3Aissue+is%3Aopen+ttml+label%3Acss-align-4> css-sizing-4<https://github.com/w3c/csswg-drafts/issues?q=is%3Aissue+is%3Aopen+ttml+label%3Acss-sizing-4> css-text-4<https://github.com/w3c/csswg-drafts/issues?q=is%3Aissue+is%3Aopen+ttml+label%3Acss-text-4>
[css-inline] Allow background of an inline area to extend to before-and after-edges of the line area <https://github.com/w3c/csswg-drafts/issues/1974> TTML<https://github.com/w3c/csswg-drafts/issues?q=is%3Aissue+is%3Aopen+ttml+label%3ATTML> css-inline-3<https://github.com/w3c/csswg-drafts/issues?q=is%3Aissue+is%3Aopen+ttml+label%3Acss-inline-3>
[css-inline][css-text-4] Allow padding to be applied at line start and end <https://github.com/w3c/csswg-drafts/issues/1973> TTML<https://github.com/w3c/csswg-drafts/issues?q=is%3Aissue+is%3Aopen+ttml+label%3ATTML> css-inline-3<https://github.com/w3c/csswg-drafts/issues?q=is%3Aissue+is%3Aopen+ttml+label%3Acss-inline-3>css-text-4<https://github.com/w3c/csswg-drafts/issues?q=is%3Aissue+is%3Aopen+ttml+label%3Acss-text-4>

Are CSS issues filed for all style attributes for which we believe CSS work is needed?

See also https://lists.w3.org/Archives/Public/public-tt/2017Nov/0109.html

CSS WG review

Minutes from TTWG and CSS WG joint meeting at TPAC: https://www.w3.org/2017/11/09-tt-minutes.html#item35
Minutes from CSS WG Paris F2F that Nigel attended remotely on Friday 4th August: https://lists.w3.org/Archives/Public/www-style/2017Sep/0000.html
This is at https://www.w3.org/wiki/TTML/CSSRequirements

TAG design review issue: https://github.com/w3ctag/design-reviews/issues/138

CSS Review of TTML2, threads: FW: TTML2 horizontal review with CSS<https://lists.w3.org/Archives/Public/public-tt/2016Dec/0013.html> and Fwd: Subtitle/caption styling + TTML + CSS<https://lists.w3.org/Archives/Public/public-tt/2016Dec/0019.html>

CSS 2.2 request for reviews from TTWG et al: Pre-announcement of CR for CSS 2.2 & request for reviews<https://lists.w3.org/Archives/Public/public-tt/2016Dec/0017.html> When can we schedule a review and gather feedback?


Agenda+ WebVTT

Actions

None in tracker

Links

WebVTT Wide review wiki page: https://www.w3.org/wiki/WebVTT_Wide_Review

Activity

No pull requests merged.

 1 Issue closed by 1 person
Closed #441 Suggest edits to the "cue overlap avoidance" portion of the specification<https://github.com/w3c/webvtt/issues/441>


5 pull requests open for longer than a week:

Proposed #439 Fix some links from the linkchecker and the broken process document link<https://github.com/w3c/webvtt/pull/439>
Proposed #430 Fontsize changes<https://github.com/w3c/webvtt/pull/430>
Proposed #434 Add a definition of "video viewport" and how it relates in HTML5 to object size resolution.<https://github.com/w3c/webvtt/pull/434>
Proposed #438 Update CLA and License agreement<https://github.com/w3c/webvtt/pull/438>
Proposed #419Timeranges <https://github.com/w3c/webvtt/pull/419>

No issues created

Agenda+ HDR in PNG [placeholder agenda item]

Links

We published this Note at https://www.w3.org/TR/png-hdr-pq/ (republished 25th July incorporating fix for typo)

Repo for PQ HDR in PNG: https://github.com/w3c/png-hdr-pq
Draft WG Note: https://w3c.github.io/png-hdr-pq/

Activity

None

Agenda+ AOB

References

Wiki http://www.w3.org/wiki/TimedText