{agenda} TTWG Meeting 2017-08-03 from Nigel Megitt on 2017-08-01 (public-tt@w3.org from August 2017)

From: Nigel Megitt <nigel.megitt@bbc.co.uk>
Date: Tue, 1 Aug 2017 16:42:54 +0000
To: Timed Text Working Group <public-tt@w3.org>
Message-ID: <D5A66E16.45E81%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=20170803T10&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: None

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
2. TAG report/CSS styling equivalents of TTML2 and IMSC features
3. IMSC
4. TTML issue assignment and progress tracking
5. TTML1 & TTML2 issues, actions, PRs, editorial actions etc
6. WebVTT feedback (David Singer to Chair if present)
7. HDR in PNG
8. Progress on HTMLCue proposal (placeholder)
9. AOB – please notify of any other AOB now!


Reminder re future milestones and meetings:

August meetings:

Thursday 10th August: TTWG phone meeting 1 Hour(s)
Thursday 17th August: TTWG phone meeting ? Hour(s) - NM away
Thursday 24th August: TTWG phone meeting ? Hour(s) - NM away
Thursday 31st August: TTWG phone meeting 2 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.

https://www.w3.org/2017/11/TPAC/Overview.html

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.

Agenda+ TAG Report/CSS styling equivalents of TTML2 and IMSC features

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

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

This is at https://www.w3.org/wiki/TTML/CSSRequirements

One item of feedback from the CSS WG has been processed into the above document: there's a mapping from the textOutline's first length component to the CSS stroke-width property.

Agenda+ IMSC (now incorporates Unicode ticket)

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

IMSC 1.0.1
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: None
Open IMSC pull requests: None
New or discussed IMSC issues:
Mixed units in tts:origin and tts:extent value<https://github.com/w3c/imsc/issues/249>
Closed IMSC issues: None
Merged IMSC Tests pull requests:
Fix spurious spaces before explicit line breaks<https://github.com/w3c/imsc-tests/pull/26>
Generic improvements to tests<https://github.com/w3c/imsc-tests/pull/35>
Open IMSC Tests pull requests: None
New or discussed IMSC Tests issues: None
Closed IMSC Tests issues:
Spurious spaces before explicit line breaks<https://github.com/w3c/imsc-tests/issues/25>
showBackgroud00x font size is too small<https://github.com/w3c/imsc-tests/issues/33>
Spurious nested tts:extent at WritingMode00x<https://github.com/w3c/imsc-tests/issues/32>
Overflow00X text is misleading<https://github.com/w3c/imsc-tests/issues/31>
Text misleading at Extent002<https://github.com/w3c/imsc-tests/issues/30>
Origin002 text does not match the render<https://github.com/w3c/imsc-tests/issues/29>
Extent001 specifies tts:extent='auto'<https://github.com/w3c/imsc-tests/issues/28>
Origin001 specifies tts:origin='auto'<https://github.com/w3c/imsc-tests/issues/27>
tts:extent repeated at Padding002<https://github.com/w3c/imsc-tests/issues/24>
Font size too small in fontsize-001 <https://github.com/w3c/imsc-tests/issues/23>
Text does not overflow in WrapOption00X.ttml<https://github.com/w3c/imsc-tests/issues/22>
Region is outside the root container in BasicTiming012.ttml <https://github.com/w3c/imsc-tests/issues/21>
No text visible and spurious tts:extent in DisplayAlign00X<https://github.com/w3c/imsc-tests/issues/20>
"." shows with overline in TextDecoration011.ttml<https://github.com/w3c/imsc-tests/issues/18>
nested-region-001.ttml should display more descriptive text<https://github.com/w3c/imsc-tests/issues/17>
space-preserve-001.ttml states "one line" but two are displayed<https://github.com/w3c/imsc-tests/issues/16>
Text not shown at Opacity004.ttml<https://github.com/w3c/imsc-tests/issues/15>
Onscreen text misleading at WritingMode004.ttml and WritingMode009.ttml<https://github.com/w3c/imsc-tests/issues/14>
tts:displayAlign should be `after` in BeginEnd002.ttml<https://github.com/w3c/imsc-tests/issues/13>
Text is over 4 lines in BasicTiming011.xml<https://github.com/w3c/imsc-tests/issues/11>
ttp:frameRate should be "30" in BasicTiming010.ttml<https://github.com/w3c/imsc-tests/issues/10>
br-in-p-001.ttml and br-in-span-001.ttml and space-preserve-001.ttml onscreen text misleading<https://github.com/w3c/imsc-tests/issues/9>
Spurious nested tts:extent in BasicTiming005<https://github.com/w3c/imsc-tests/issues/34>


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

We have now published the WD for WR however there are still many issues open, and we intend also to apply multiple fixes as already agreed for TTML1.

At the moment of writing this agenda, there are:

TTML1 issues:

  *   3 open issues with no milestone, none marked as discussed and agreed
  *   37 open issues in "3rd Ed" milestone, 15 marked as discussed and agreed
  *   11 open issues in "3rd Ed Test Suite" milestone, none marked as discussed and agreed

TTML2 issues:

  *   2 open issues on the Editor's WR Work List milestone, 1 of which has a PR (#397);
  *   52 open issues with no milestone, none of which has a PR open label.
  *   7 open issues awaiting some feedback on disposition, which are in the "Group's WR action required list" milestone, including #316 which is to review the deprecations before finalising the WR.

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>

See separate agenda topic above.

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?

Actions:
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: None
Open TTML1 Pull Requests: None
Open TTML2 Pull Requests:
Remove HLG HDR step 8 superscript 5b<https://github.com/w3c/ttml2/pull/398>
New TTML1 Issues: None
New TTML2 Issues: None
Closed TTML1 Issues: None
Closed TTML2 Issues: None
Discussed TTML1 Issues:
Use of attributes in TTML namespace but NOT defined in TTML1 <https://github.com/w3c/ttml1/issues/251>
Discussed TTML2 Issues: None

Focus topic(s) for this week

Pull Requests

We already agreed to merge the one open PR – nothing to discuss here.

Issues

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

If there are any issues that we decide need to be resolved before WR a proposal for the fix is needed ASAP (basically, it's too late already unless it can easily be agreed by the group).


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+ 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.

What are the WG's views on the dispositions generated by the CG?

Resolve to publish a new WD? (not strictly necessary)

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

Open Pull requests:
Prepare a new WD.<https://github.com/w3c/webvtt/pull/351>
Merged Pull requests: None
New issues: None
Closed issues: None
Recently discussed issues:
Prepare a new WD.<https://github.com/w3c/webvtt/pull/351>


Agenda+ HDR in PNG

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/

Merged pull requests: None
Open pull requests: None
New or discussed issues: None
Closed issues:
Typo<https://github.com/w3c/png-hdr-pq/issues/6>

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.

See also the notes from the TAG meeting (see agenda item above) at which the inability to instantiate TextTrackCue objects in most browsers was mentioned.

[placeholder agenda item]


Agenda+ AOB

References

Wiki http://www.w3.org/wiki/TimedText
Received on Tuesday, 1 August 2017 16:43:20 UTC