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{agenda} TTWG Meeting 2017-06-15

From: Nigel Megitt <nigel.megitt@bbc.co.uk>
Date: Tue, 13 Jun 2017 16:49:22 +0000
To: W3C Public TTWG <public-tt@w3.org>
Message-ID: <D5656227.42038%nigel.megitt@bbc.co.uk>
This meeting is scheduled for up to 120m. 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=20170615T10&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: Glenn

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. TPAC advanced planning
3. TTML issue assignment and progress tracking
4. TTML1 & TTML2 issues, actions, PRs, editorial actions etc
5. HDR in PNG
6. Progress on HTMLCue proposal (placeholder)
7. WebVTT comments (placeholder)
8. AOB  please notify of any other AOB now!

Reminder re future milestones and meetings:

June Meetings:

Thursday 22th June: TTWG phone meeting 2 Hour(s)
Thursday 29th June: TTWG phone meeting 2 Hour(s)

Further ahead:

Thursday 6th July: TTWG phone meeting ? Hour(s)
Thursday 13th July: TTWG phone meeting ? Hour(s)
Thursday 20th July: TTWG phone meeting ? Hour(s)
Thursday 27th July: TTWG phone 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

Agenda+ TPAC 2017 Advanced planning

As Chair I have completed the WBS survey, requesting:

Attendance for ~10 people.
No preference for date, meet on any two days.
Flexible about days.
Joint meeting with CSS WG and with Web and TV IG.
Avoid overlap with Web and TV IG.
Permit observers.
Not member confidential.
Estimate ~6 attending technical plenary.
Estimate ~3 attending AC sessions Tuesday and Thursday.


Chair was asked for further clarification about the joint meetings and the overlap avoidance; since Web and TV IG are likely to meet on the Monday, and CSSWG on the Monday and Tuesday, I requested Thursday and Friday for the main TTWG meetings with joint agenda slots with the other two groups on Monday and/or Tuesday.

ID      State   Title   Person  Due Date        Associated with
ACTION-497<https://www.w3.org/AudioVideo/TT/tracker/actions/497>[(edit)]<https://www.w3.org/AudioVideo/TT/tracker/actions/497/edit>     open    Invite csswg to joint meeting at tpac 2017, with list of topics.<https://www.w3.org/AudioVideo/TT/tracker/actions/497>  Nigel Megitt    2017-06-15

Agenda+ IMSC (now incorporates Unicode ticket)

ID      State   Title   Person  Due Date        Associated with
ACTION-498<https://www.w3.org/AudioVideo/TT/tracker/actions/498>[(edit)]<https://www.w3.org/AudioVideo/TT/tracker/actions/498/edit>     pending review  Invite i18n to discuss imsc 1.0.1 issues<https://www.w3.org/AudioVideo/TT/tracker/actions/498>  Nigel Megitt    2017-06-15      TTML IMSC 1.0<https://www.w3.org/AudioVideo/TT/tracker/products/7>

IMSC1.0.1 Internationalisation issues (if Richard and/or Addison are able to attend)

Agree disposition responses?

Agree to publish 1.0.1 as CR?

The status of the comments has been summarised at https://www.w3.org/wiki/IMSC1.0.1_Comments_tracker

What are our next steps? We will need dispositions for the review comments, to Create tests for CR exit criteria<https://github.com/w3c/imsc/issues/226> and set a CR exit minimum timeline.

IMSC 1.0.1 WD for Wide Review published at https://www.w3.org/TR/ttml-imsc1.0.1/
IMSC 1 Rec available at https://www.w3.org/TR/2016/REC-ttml-imsc1-20160421/
Patent policy call for exclusions sent 2017-02-03, archived at https://lists.w3.org/Archives/Public/public-tt/2017Feb/0006.html

Editor's draft is directly viewable at http://w3c.github.io/imsc/imsc1/spec/ttml-ww-profiles.html
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

Merged IMSC pull requests:
Clarified expected system behavior for ittp:activeArea<https://github.com/w3c/imsc/pull/231>
Clarify requirement that regions are contained within root container<https://github.com/w3c/imsc/pull/240>
Open IMSC pull requests:
Clarified the requirement for processors to implement reference fonts <https://github.com/w3c/imsc/pull/245>
Discourage the use of tab characters in <p> and <span> <https://github.com/w3c/imsc/pull/242>
Required spaces between non-terminal components of styling and parameter attributes (issue #221)<https://github.com/w3c/imsc/pull/230>
New or discussed IMSC issues:
Requirement to support certain Code Point<https://github.com/w3c/imsc/issues/241>
Why exclude hebrew and arabic proportional reference fonts?<https://github.com/w3c/imsc/issues/237>
imsc1-all.xsd has a bad pointer for SMPTE-TT schemas<https://github.com/w3c/imsc/issues/235>
ittp:activeArea clarification<https://github.com/w3c/imsc/issues/227>
Closed IMSC issues:
Create tests for CR exit criteria<https://github.com/w3c/imsc/issues/226>
Copy referenced schema to the schema directory for ease of validation<https://github.com/w3c/imsc/issues/212>
Clarify "All regions shall not extend beyond the root container"<https://github.com/w3c/imsc/issues/239>
Merged IMSC Tests pull requests: None
Open IMSC Tests pull requests:
Added test combining linePadding and space preserve<https://github.com/w3c/imsc-tests/pull/19>
New or discussed IMSC Tests issues:
FontFamily009.ttml has a spurious space<https://github.com/w3c/imsc-tests/issues/7>
Closed IMSC Tests issues: None

Agenda+ TTML issue assignment and progress tracking (20 minutes maximum)

By the time we have the meeting all pull requests intended for WR need to have been opened and be ready for review and merge.

At the moment of writing this agenda, there are:

  *   5 open issues on the Editor's WR Work List milestone, of which 1 is not labelled as "PR Open";
  *   53 open issues with no milestone, 1 of which is labelled as "PR Open" and
  *   7 open issues awaiting some feedback on disposition, which are in the "Group's WR action required list" milestone.

To achieve our goal of WR publication by end of June we need a proposal to publish based on a draft WR version of the ED for a 2 week group review by 15th June at the latest (including any proposed pull requests). Aside from resolving group review issues generated during that period, (i.e. those required to achieve consensus on the proposal to publish) no further changes will be accepted after 15th June. However I would encourage everyone to begin reviewing now and file any issues that would block publication if not resolved. This also includes reviewing open pull requests and adding comments.

Agenda+ TTML1 & TTML2 issues, actions, PRs, editorial actions etc

Horizontal Review:

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>

Internationalisation review by r12a has generated several new issues on TTML2 and comments on existing issues (see below), this week mainly about alignment with relatively recent CSS developments.

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?

ID      State   Title   Person  Due Date        Associated with
ACTION-443<https://www.w3.org/AudioVideo/TT/tracker/actions/443>[(edit)]<https://www.w3.org/AudioVideo/TT/tracker/actions/443/edit>     open    Prepare a document showing mapping arib ruby extension features to ttml2 for use as a liaison document to arib.<https://www.w3.org/AudioVideo/TT/tracker/actions/443>   Glenn Adams     2016-08-26      TTML2<https://www.w3.org/AudioVideo/TT/tracker/products/4>
ACTION-462<https://www.w3.org/AudioVideo/TT/tracker/actions/462>[(edit)]<https://www.w3.org/AudioVideo/TT/tracker/actions/462/edit>     open    Create issue on ttml2 to add "mapping from other versions and profiles of ttml"<https://www.w3.org/AudioVideo/TT/tracker/actions/462>   Glenn Adams     2016-04-28      TTML2<https://www.w3.org/AudioVideo/TT/tracker/products/4>

Most recent WD published at https://www.w3.org/TR/2017/WD-ttml2-20170106/

Merged TTML1 Pull Requests: None
Merged TTML2 Pull Requests:
Add justify keyword value to tts:textAlign (#375).<https://github.com/w3c/ttml2/pull/386>
Revert deprecation of profile parameter attribute (#331).<https://github.com/w3c/ttml2/pull/356>
Open TTML1 Pull Requests: None
Open TTML2 Pull Requests:
Issue 0195 audio descriptions<https://github.com/w3c/ttml2/pull/349>
Issue 0384 streaming html appendix<https://github.com/w3c/ttml2/pull/389>
Add justify keyword value to tts:displayAlign (#370).<https://github.com/w3c/ttml2/pull/390>
Make values of tts:rubyPosition consistent with <emphasis-position> (<https://github.com/w3c/ttml2/pull/391>
New TTML1 Issues: None
New TTML2 Issues:
Clarify/summarize use of foreign namespace elements and attributes.<https://github.com/w3c/ttml2/issues/387>
Closed TTML1 Issues: None
Closed TTML2 Issues:
[Jun 5 ED 10.2.14] example has extent on style rather than region<https://github.com/w3c/ttml2/issues/388>
Add justify to tts:textAlign.<https://github.com/w3c/ttml2/issues/375>
Revert deprecation of ttp:profile on root element.<https://github.com/w3c/ttml2/issues/331>
Discussed TTML1 Issues: None
Discussed TTML2 Issues:
The tts:displayAlign property may need to apply to content elements<https://github.com/w3c/ttml2/issues/137>
Appendix R (streaming) does not represent current practice.<https://github.com/w3c/ttml2/issues/384>

Focus topic(s) for this week

Open Pull Requests (50 minutes max)

Can we reach consensus to merge the open pull requests or understand what changes are needed so that they can be merged?


Iterate through open issues with no PR  decide action to take on each, e.g. defer to CR, defer to TTML.next, close etc.

Collate list of the issues we want to open with CSS WG

We need to put this together as part of the agenda for a request to meet at TPAC.

Current open issues: https://github.com/w3c/ttml1/issues and 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+ HDR in PNG

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

Merged pull requests: none
Open pull requests: None
New or discussed issues: None
Closed issues: None

Note that discussion of this document has continued on the Color on the Web CG reflector, with the focus drifting towards HLG.

Agenda+ HTMLCue proposal progress update.

ID      State   Title   Person  Due Date        Associated with
ACTION-441<https://www.w3.org/AudioVideo/TT/tracker/actions/441>[(edit)]<https://www.w3.org/AudioVideo/TT/tracker/actions/441/edit>     open    Kick off the analysis work on the vttcue carrying html idea.<https://www.w3.org/AudioVideo/TT/tracker/actions/441>      Andreas Tai     2015-11-05

See https://lists.w3.org/Archives/Public/public-tt/2016Apr/0012.html for further information on this, this week.

Also HTML import and HTMLCue?<https://lists.w3.org/Archives/Public/public-tt/2016Sep/0003.html> email from 2016-09-06.

[placeholder agenda item]

Agenda+ WebVTT review feedback

ID      State   Title   Person  Due Date        Associated with
ACTION-396<https://www.w3.org/AudioVideo/TT/tracker/actions/396>[(edit)]<https://www.w3.org/AudioVideo/TT/tracker/actions/396/edit>     open    Produce evidence of request for wide review for webvtt, for the archive<https://www.w3.org/AudioVideo/TT/tracker/actions/396>   David Singer    2015-04-17      WebVTT 1.0<https://www.w3.org/AudioVideo/TT/tracker/products/8>

Discussion on WebVTT review feedback and next steps.

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

Open Pull requests:
Add requirements for region identifier to exist.<https://github.com/w3c/webvtt/pull/201>
Ruby issue264<https://github.com/w3c/webvtt/pull/347>
Merged Pull requests: None
New issues: None
Closed issues: None
Recently discussed issues: None

Agenda+ AOB


Wiki http://www.w3.org/wiki/TimedText
Received on Tuesday, 13 June 2017 16:49:55 UTC

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