{agenda} TTWG Meeting 2018-09-13

This meeting is scheduled for up to 120 minutes.
Please be ready for a prompt start at 14:03am 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=20180913T14&p1=1440

Thursdays 14:03am-16:00pm UTC

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:

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. Prioritise discussion for this meeting and look ahead
2. CfC Status update
3. TTML1 Implementation Report, Actions, Pull Requests and Issues
4. TTML2 Implementation Report, Actions, Pull Requests and Issues
5. IMSC  Implementation Report, Actions, Pull Requests and Issues
6. IMSC vNext requirements Actions, Pull Requests and Issues
7. CSS Actions Review
8. TTML Profile Registry Actions, Pull Requests and Issues
9. WebVTT (David Singer to Chair if present)
10. AOB – please notify of any other AOB now!


Reminder re future milestones and meetings:

September meetings:

Thursday 20th September: TTWG meeting 2 Hour(s)
Thursday 27th September: TTWG meeting 2 Hour(s)

IMSC 1.1 and TTML publication events: see https://www.w3.org/AudioVideo/TT/specs-timeline.html

Further ahead:

Thursday 4th October: TTWG meeting 2 Hour(s)
Thursday 11th October: TTWG meeting 2 Hour(s)
Thursday 18th October: TTWG meeting 2 Hour(s)
Monday 22nd October: TTWG f2f meeting at TPAC, Lyon
Tuesday 23rd October: TTWG f2f meeting at TPAC, Lyon

Note that no meeting is planned for Thursday 1st November currently.

Next planned face to face: TPAC 2018 Lyon<https://www.w3.org/2018/10/TPAC/Overview.html>, 22-26 October.

Future DST date changes: https://www.timeanddate.com/time/dst/2018.html

In particular, this year, given our current attendance, the next change is:

Europe changes on Sunday 28 October
USA changes on Sunday 4 November
Philippines, Japan and China has no DST in 2018

For meetings beginning 8th November we will move to UTC 1500 which is the same time as usual when not in DST.

Agenda+ CfC status

By the time this meeting begins there should be an open Call for Consensus to request transition of TTML1 3rd Edition, TTML2 and IMSC 1.1 to Proposed Recommendation when we can demonstrate that their CR exit criteria have been met.

Agenda+ TTML1 Implementation Report, Actions, Pull Requests and Issues

Actions

No actions due in tracker.

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

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

Recent Activity

 2 Pull requests merged by 1 person
Merged #363 Fix summary of substantive changes<https://github.com/w3c/ttml1/pull/363>
Merged #362 Change the term computed resolved value to used value<https://github.com/w3c/ttml1/pull/362>

 2 Issues closed by 1 person
Closed #359 Error in the substantive change list<https://github.com/w3c/ttml1/issues/359>
Closed #360 Change resolved computed value to used value<https://github.com/w3c/ttml1/issues/360>


Proposed timeline for publication: https://www.w3.org/AudioVideo/TT/specs-timeline.html

TTML1 3rd Edition CR2 was published on 9th August at https://www.w3.org/TR/ttml1/ (and pointed to by https://www.w3.org/TR/ttml1/ also).

No pull requests merged or issues closed.

Pull Requests To Review (if discussion requested)


One pull request open for longer:

Proposed #361 TTML1 3ED tests<https://github.com/w3c/ttml1/pull/361>



New (and old) Issues to Discuss

No issues created since the previous agenda

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

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/
TTML1 Tests repo: https://github.com/w3c/ttml1-tests

Agenda+ TTML2 Implementation Report, Actions, Pull Requests and Issues

Actions

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

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

Recent Activity

7 Pull requests merged by 1 person
Merged #996 Clarify language regarding function-expression in @condition (#988).<https://github.com/w3c/ttml2/pull/996>
Merged #995 Add missing 'prohibited' value to 'tts:validation' in schemas (#977).<https://github.com/w3c/ttml2/pull/995>
Merged #994 Add reference to ttp:profile attribute in notes (#969); add missing l…<https://github.com/w3c/ttml2/pull/994>
Merged #993 Fix name of tts:luminanceGain (#975).<https://github.com/w3c/ttml2/pull/993>
Merged #992 Improve opacity data type for animation interoperability (#974).<https://github.com/w3c/ttml2/pull/992>
Merged #991 Clarify default baseline for the applicability and use of features (#…<https://github.com/w3c/ttml2/pull/991>
Merged #981 Remove #textOrientation-sideways-LR and related semantics (#980).<https://github.com/w3c/ttml2/pull/981>

 9 Issues closed by 1 person
Closed #988 Clarify language in 8.3.5 <condition>.<https://github.com/w3c/ttml2/issues/988>
Closed #977 Add missing ttp:validation 'prohibited' value in schemas.<https://github.com/w3c/ttml2/issues/977>
Closed #969 Add reference to ttp:profile attribute in 5.2.1.<https://github.com/w3c/ttml2/issues/969>
Closed #975 Fix name of tts:luminanceGain in schemas.<https://github.com/w3c/ttml2/issues/975>
Closed #974 Widen schema data type for `tts:opacity` to avoid false negative schema errors.<https://github.com/w3c/ttml2/issues/974>
Closed #998 Prohibit zero numerator/denominator in XSD for ttp:displayAspectRatio<https://github.com/w3c/ttml2/issues/998>
Closed #976 Fix CSS derivation of tts:displayAlign.<https://github.com/w3c/ttml2/issues/976>
Closed #973 Clarify that #length-root-container-relative applies to all <length> expressions.<https://github.com/w3c/ttml2/issues/973>
Closed #980 Remove #textOrientation-sideways-LR.<https://github.com/w3c/ttml2/issues/980>


Proposed timeline for publication: https://www.w3.org/AudioVideo/TT/specs-timeline.html

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

No pull requests opened this week.

One pull request open for longer than a week:
Proposed #981 Remove #textOrientation-sideways-LR and related semantics (#980).<https://github.com/w3c/ttml2/pull/981>

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

 5 Issues created by 2 people
Opened #990 Audio related feature changes<https://github.com/w3c/ttml2/issues/990>
Opened #989 Back out requirement for xml:id on out-of-line region.<https://github.com/w3c/ttml2/issues/989>
Opened #987 Clarify that `\\` in literals means a single backslash.<https://github.com/w3c/ttml2/issues/987>
Opened #986 Sourced data embedding should include the use of @src as well as nested <source>.<https://github.com/w3c/ttml2/issues/986>
Opened #985 Clarify use of lexical expression '-0' and its semantics.<https://github.com/w3c/ttml2/issues/985>

There is currently one issue labelled for the Agenda:

Audio related feature changes <https://github.com/w3c/ttml2/issues/990> agenda<https://github.com/w3c/ttml2/issues?q=is%3Aopen+label%3Aagenda>


Links

Most recent CR published at https://www.w3.org/TR/2018/CR-ttml2-20180814/
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 Implementation Report, Actions, Pull Requests and Issues

Actions

None in tracker.

What is the status of the implementation report and test suite?

Recent Activity

 11 Pull requests merged by 2 people
Merged #458 Remove duplicate conformance text<https://github.com/w3c/imsc/pull/458>
Merged #456 Remove tts:lineShear<https://github.com/w3c/imsc/pull/456>
Merged #457 Add image element to note at §5.1<https://github.com/w3c/imsc/pull/457>
Merged #452 Constrain rh/rw on tts:extent and tts:position<https://github.com/w3c/imsc/pull/452>
Merged #454 Remove tts:lineShear and tts:shear from negative length requirement<https://github.com/w3c/imsc/pull/454>
Merged #451 Misc editorial changes<https://github.com/w3c/imsc/pull/451>
Merged #450 Clean reference shortcut text<https://github.com/w3c/imsc/pull/450>
Merged #447 Fix color contrast<https://github.com/w3c/imsc/pull/447>
Merged #449 Add Stefan Poeschel to the acknowledgements<https://github.com/w3c/imsc/pull/449>
Merged #448 Informative section headers made consistent<https://github.com/w3c/imsc/pull/448>
Merged #379 General update<https://github.com/w3c/imsc/pull/379>

 13 Issues closed by 3 people
Closed #419 text profile should support anamorphic fonts<https://github.com/w3c/imsc/issues/419>
Closed #424 Conformance conventions are in two places, differently<https://github.com/w3c/imsc/issues/424>
Closed #455 Remove `#lineShear`<https://github.com/w3c/imsc/issues/455>
Closed #426 §5.1 special case should include image element<https://github.com/w3c/imsc/issues/426>
Closed #445 Limit application of rw/rh tts:extent and tts:position<https://github.com/w3c/imsc/issues/445>
Closed #453 #length-negative: <length> vs. <percentage><https://github.com/w3c/imsc/issues/453>
Closed #442 § 9.4.5.2 caption typo<https://github.com/w3c/imsc/issues/442>
Closed #443 § 7.12.6 px wording<https://github.com/w3c/imsc/issues/443>
Closed #441 Clean-up reference shortcut text<https://github.com/w3c/imsc/issues/441>
Closed #432 More color contrast non-compliance<https://github.com/w3c/imsc/issues/432>
Closed #435 Add Stefan Poeschel to the acknowledgements<https://github.com/w3c/imsc/issues/435>
Closed #433 Inconsistent labelling of non-normative sections<https://github.com/w3c/imsc/issues/433>
Closed #444 Strictly negative = negative.<https://github.com/w3c/imsc/issues/444>


Proposed timeline for publication: https://www.w3.org/AudioVideo/TT/specs-timeline.html

No pull requests merged or issues closed in this period.


Pull Requests To Review (if discussion requested)

No pull requests opened this week.

No pull requests open for more than a week.


New (and old) Issues to Discuss

No issues created this week.

No issues or pull requests 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 1.1 CR2 published at https://www.w3.org/TR/2018/CR-ttml-imsc1.1-20180726/
Patent policy call for exclusions sent 2017-02-03, archived at https://lists.w3.org/Archives/Public/public-tt/2017Feb/0006.html
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 Implementation Page: https://www.w3.org/wiki/TimedText/IMSC1_implementation_page.
IMSC Tests repository: https://github.com/w3c/imsc-tests

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

 1 Pull request merged by 1 person
Merged #39 Remove editorial notes and specify at-risk requirements<https://github.com/w3c/imsc-vnext-reqs/pull/39>

 2 Issues closed by 1 person
Closed #37 Allow for publication of spec without rw/rh<https://github.com/w3c/imsc-vnext-reqs/issues/37>
Closed #38 Remove editorial notes<https://github.com/w3c/imsc-vnext-reqs/issues/38>

Pull requests for review (to discuss if requested)

No pull requests open.

No issues created this week.

RESOLUTION: After resolving the open issues marked as IMSC1.1, publish the IMSC 1.1 Requirements as a Working Group Note
Review period for this resolution closed on 9th August with no objections received.

Allow for publication of spec without rw/rh <https://github.com/w3c/imsc-vnext-reqs/issues/37> IMSC1.1<https://github.com/w3c/imsc-vnext-reqs/issues?q=is%3Aissue+is%3Aopen+label%3AIMSC1.1>
Remove editorial notes <https://github.com/w3c/imsc-vnext-reqs/issues/38> IMSC1.1<https://github.com/w3c/imsc-vnext-reqs/issues?q=is%3Aissue+is%3Aopen+label%3AIMSC1.1>

No issues or pull requests currently marked for the agenda.

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>
#2983 Support for shearing of lines and inline elements<https://github.com/w3c/csswg-drafts/issues/2983>

Additionally the following CSS issues may be of interest:

[css-fonts-4] oblique angle for synthesis in vertical text <https://github.com/w3c/csswg-drafts/issues/2869>  css-fonts-4<https://github.com/w3c/csswg-drafts/issues?q=is%3Aopen+label%3Acss-fonts-4>
[css-inline] Define the content area of inline boxes <https://github.com/w3c/csswg-drafts/issues/814> css-inline-3<https://github.com/w3c/csswg-drafts/issues?q=is%3Aopen+is%3Aissue+label%3Acss-inline-3>

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+ TTML Profile Registry


Links

TTML Profile Registry editor's draft: https://w3c.github.io/tt-profile-registry/
TTML Profile Registry repository: https://github.com/w3c/tt-profile-registry

Recent Activity

No pull requests merged or issues closed.

Pull requests for review (to discuss if requested)

No pull requests currently open.

One pull request opened for longer than a week:

Add support for IMSC 1.1 Text and Image Profile <https://github.com/w3c/tt-profile-registry/pull/36> enhancement<https://github.com/w3c/tt-profile-registry/issues?q=is%3Apr+is%3Aopen+label%3Aenhancement>

No issues created this week.

No issues or pull requests currently marked for the agenda.

Links

TTML Profile Registry issues labelled for the agenda: https://github.com/w3c/tt-profile-registry/labels/agenda :



Agenda+ WebVTT

Actions

None in tracker

Links

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

Activity

No pull requests proposed or closed this period.

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 other (meaningful) issues created this period.


Agenda+ AOB

References

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