{agenda} TTWG Meeting 2018-05-17

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=20180517T10&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

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. TPAC 2018
3. TTML1 Actions, Pull Requests and Issues
4. TTML2 Actions, Pull Requests and Issues
5. IMSC Actions, Pull Requests and Issues
6. IMSC vNext requirements Actions, Pull Requests and Issues
7. CSS Actions Review
8. WebVTT (David Singer to Chair if present)
9. HDR in PNG (placeholder)
10. AOB – please notify of any other AOB now!


Reminder re future milestones and meetings:

May meetings:

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>

 2 Pull requests proposed by 2 people
Proposed #29 Ac review<https://github.com/w3c/charter-timed-text/pull/29> 12 days ago
Proposed #30 Remove duplicate "should".<https://github.com/w3c/charter-timed-text/pull/30>


Prior to AC review the following issue was opened, now mooted by WebVTT CR publication:
 1 Issue closed by 1 person
Closed #21 Implement WebVTT resolution<https://github.com/w3c/charter-timed-text/issues/21>

Agenda+ TPAC 2018

Schedule is at https://www.w3.org/2018/10/TPAC/schedule.html

TTWG shown as meeting on the Monday and Tuesday.
AD CG meeting on the Thursday 1030.
CSS WG and Media & Entertainment IG also meeting on the Monday and Tuesday

We have until 28th May to request a change to the schedule.

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

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

Recent Activity

No pull requests merged or issues closed.

Pull Requests To Review (if discussion requested)

 1 Pull request proposed by 1 person
Proposed #353 Move edition number to subtitle (#352)<https://github.com/w3c/ttml1/pull/353>


New (and old) Issues and Pull Requests to Discuss

No older pull requests open.

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

No new issues opened

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

TTML1 tests repo created at:https://github.com/w3c/ttml2-tests

Recent Activity

 2 Pull requests merged by 1 person
Merged #716 Change tts:luminanceGain to non-inheritable (#715).<https://github.com/w3c/ttml2/pull/716>
Merged #701 Fix schema typos and missing specification syntax for definition of '…<https://github.com/w3c/ttml2/pull/701>

 3 Issues closed by 1 person
Closed #666 Typo in <text-combine>, "auto" should read "all".<https://github.com/w3c/ttml2/issues/666>
Closed #715 Inheritance of tts:luminanceGain<https://github.com/w3c/ttml2/issues/715>
Closed #699 Animate @calcMode value displace{,d} should read paced.<https://github.com/w3c/ttml2/issues/699>


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

 16 Pull requests proposed by 1 person
Proposed #729 Expand #opacity feature definition using #padding as model (#728).<https://github.com/w3c/ttml2/pull/729>
Proposed #731 Refactor semantics of #region-inline-implicit (#727).<https://github.com/w3c/ttml2/pull/731>
Proposed #732 Account for use of auto keyword in derivation of tts:textEmphasis (#726).<https://github.com/w3c/ttml2/pull/732>
Proposed #733 Specify fallback semantics for tts:textCombine (#725).<https://github.com/w3c/ttml2/pull/733>
Proposed #734 Fix typo in keyword for tts:textCombine (#724).<https://github.com/w3c/ttml2/pull/734>
Proposed #735 Change text shadow offset to denote absolute (writing mode independen…<https://github.com/w3c/ttml2/pull/735>
Proposed #736 Specify 0px as the default value for blur radius (#721).<https://github.com/w3c/ttml2/pull/736>
Proposed #737 Use COMMA as separator in a list of text shadows (#720).<https://github.com/w3c/ttml2/pull/737>
Proposed #738 Add ttp:displayAspectRatio (rewriting the now obsolete ttp:storageAsp…<https://github.com/w3c/ttml2/pull/738>
Proposed #739 Add #length-root-container-relative feature (#718).<https://github.com/w3c/ttml2/pull/739>
Proposed #740 Clarify application of ruby alignment and positioning (#717).<https://github.com/w3c/ttml2/pull/740>
Proposed #741 Clarify explanation of percentage edge offset in tts:position example…<https://github.com/w3c/ttml2/pull/741>
Proposed #742 Exclude implied animation of region via tts:origin on div and p (#710).<https://github.com/w3c/ttml2/pull/742>
Proposed #743 Mark new attributes (in this specification) as having no derivation (…<https://github.com/w3c/ttml2/pull/743>
Proposed #744 Refactor extent features (#693).<https://github.com/w3c/ttml2/pull/744>
Proposed #745 Fix placement typo (wrong location of exclusion language) (#688).<https://github.com/w3c/ttml2/pull/745>

Plus 5 pull requests open for longer:

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 #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

 2 Issues created by 2 people
Opened #746 Improve consistency with use of @ prefix on attribute names.<https://github.com/w3c/ttml2/issues/746>
Opened #730 Feature #extent-measure also affects <length><https://github.com/w3c/ttml2/issues/730>

9 Issues or Pull requests currently marked as Agenda:


  *
Exclude implied animation of region via tts:origin on div and p (#710). <https://github.com/w3c/ttml2/pull/742>
<https://github.com/w3c/ttml2/pull/742#partial-pull-merging>
 agenda<https://github.com/w3c/ttml2/issues?q=is%3Aopen+label%3Aagenda> editorial<https://github.com/w3c/ttml2/issues?q=is%3Aopen+label%3Aeditorial>pending review<https://github.com/w3c/ttml2/issues?q=is%3Aopen+label%3A%22pending+review%22>
#742 opened 2 days ago by skynavga<https://github.com/w3c/ttml2/issues?q=is%3Apr+is%3Aopen+author%3Askynavga> • Changes requested<https://github.com/w3c/ttml2/pull/742#partial-pull-merging>  CR2<https://github.com/w3c/ttml2/milestone/2>
[@skynavga]<https://github.com/w3c/ttml2/issues?q=assignee%3Askynavga+is%3Aopen>
 3<https://github.com/w3c/ttml2/pull/742>

Change text shadow offset to denote absolute (writing mode independen… <https://github.com/w3c/ttml2/pull/735>
<https://github.com/w3c/ttml2/pull/735#partial-pull-merging>
 agenda<https://github.com/w3c/ttml2/issues?q=is%3Aopen+label%3Aagenda>pending review<https://github.com/w3c/ttml2/issues?q=is%3Aopen+label%3A%22pending+review%22> substantive<https://github.com/w3c/ttml2/issues?q=is%3Aopen+label%3Asubstantive>
#735 opened 4 days ago by skynavga<https://github.com/w3c/ttml2/issues?q=is%3Apr+is%3Aopen+author%3Askynavga> • Approved<https://github.com/w3c/ttml2/pull/735#partial-pull-merging>  CR2<https://github.com/w3c/ttml2/milestone/2>
[@skynavga]<https://github.com/w3c/ttml2/issues?q=assignee%3Askynavga+is%3Aopen>
 6<https://github.com/w3c/ttml2/pull/735>
Definition of implicit inline region <https://github.com/w3c/ttml2/issues/727> agenda<https://github.com/w3c/ttml2/issues?q=is%3Aopen+label%3Aagenda> pr open<https://github.com/w3c/ttml2/issues?q=is%3Aopen+label%3A%22pr+open%22> substantive<https://github.com/w3c/ttml2/issues?q=is%3Aopen+label%3Asubstantive>
#727 opened 7 days ago by spoeschel<https://github.com/w3c/ttml2/issues?q=is%3Aissue+is%3Aopen+author%3Aspoeschel>  CR2<https://github.com/w3c/ttml2/milestone/2>
[@skynavga]<https://github.com/w3c/ttml2/issues?q=assignee%3Askynavga+is%3Aopen>
 1<https://github.com/w3c/ttml2/issues/727>
Disallow `<length> left` and `<length> right` syntax. <https://github.com/w3c/ttml2/issues/711> agenda<https://github.com/w3c/ttml2/issues?q=is%3Aopen+label%3Aagenda>
#711 opened on Apr 5 by palemieux<https://github.com/w3c/ttml2/issues?q=is%3Aissue+is%3Aopen+author%3Apalemieux>  CR2<https://github.com/w3c/ttml2/milestone/2>
[@skynavga]<https://github.com/w3c/ttml2/issues?q=assignee%3Askynavga+is%3Aopen>
 9<https://github.com/w3c/ttml2/issues/711>
Negative feature designators aren't future proof. <https://github.com/w3c/ttml2/issues/697> agenda<https://github.com/w3c/ttml2/issues?q=is%3Aopen+label%3Aagenda> bug<https://github.com/w3c/ttml2/issues?q=is%3Aopen+label%3Abug>
#697 opened on Mar 13 by nigelmegitt<https://github.com/w3c/ttml2/issues?q=is%3Aissue+is%3Aopen+author%3Anigelmegitt>  CR2<https://github.com/w3c/ttml2/milestone/2>
[@skynavga]<https://github.com/w3c/ttml2/issues?q=assignee%3Askynavga+is%3Aopen>
 2<https://github.com/w3c/ttml2/issues/697>
Use of HDR images. <https://github.com/w3c/ttml2/issues/695> agenda<https://github.com/w3c/ttml2/issues?q=is%3Aopen+label%3Aagenda> enhancement<https://github.com/w3c/ttml2/issues?q=is%3Aopen+label%3Aenhancement>
#695 opened on Mar 9 by mikedo<https://github.com/w3c/ttml2/issues?q=is%3Aissue+is%3Aopen+author%3Amikedo>  CR2<https://github.com/w3c/ttml2/milestone/2>
 2<https://github.com/w3c/ttml2/issues/695>
Use of PNG image format. <https://github.com/w3c/ttml2/issues/694> agenda<https://github.com/w3c/ttml2/issues?q=is%3Aopen+label%3Aagenda> substantive<https://github.com/w3c/ttml2/issues?q=is%3Aopen+label%3Asubstantive>
#694 opened on Mar 9 by mikedo<https://github.com/w3c/ttml2/issues?q=is%3Aissue+is%3Aopen+author%3Amikedo>  CR2<https://github.com/w3c/ttml2/milestone/2>
 2<https://github.com/w3c/ttml2/issues/694>
The #extent-measure designation includes the value auto. <https://github.com/w3c/ttml2/issues/690> agenda<https://github.com/w3c/ttml2/issues?q=is%3Aopen+label%3Aagenda> works for me<https://github.com/w3c/ttml2/issues?q=is%3Aopen+label%3A%22works+for+me%22>
#690 opened on Mar 7 by palemieux<https://github.com/w3c/ttml2/issues?q=is%3Aissue+is%3Aopen+author%3Apalemieux>
 11<https://github.com/w3c/ttml2/issues/690>
Move processor conformance out of #validation <https://github.com/w3c/ttml2/issues/689> agenda<https://github.com/w3c/ttml2/issues?q=is%3Aopen+label%3Aagenda> question<https://github.com/w3c/ttml2/issues?q=is%3Aopen+label%3Aquestion>

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

No issues closed or pull requests merged.


Pull Requests To Review (if discussion requested)

No pull requests opened.

One pull requests open for longer:

Proposed #379 General update<https://github.com/w3c/imsc/pull/379>

New (and old) Issues to Discuss

 2 Issues created by 2 people
Opened #382 No <length> in tts:extent due to prohibited #extent-measure<https://github.com/w3c/imsc/issues/382>
Opened #381 Change reference to TTML to a dated reference<https://github.com/w3c/imsc/issues/381>

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 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 and no issues closed.

 1 Issue created by 1 person
Opened #443 WebVTT file consists of a sequence of [text vs html] segments?<https://github.com/w3c/webvtt/issues/443>


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>


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