{agenda} TTWG Meeting 2017-02-23 from Nigel Megitt on 2017-02-22 (public-tt@w3.org from February 2017)

From: Nigel Megitt <nigel.megitt@bbc.co.uk>
Date: Wed, 22 Feb 2017 13:56:37 +0000
To: W3C Public TTWG <public-tt@w3.org>
Message-ID: <D4D3490F.39039%nigel.megitt@bbc.co.uk>
This meeting is scheduled for up to 60m. Please be ready for a prompt start at 11:03am Boston time.

Once again, at the new time 1 hour later than the "old" 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=20170223T11&p1=43

Thursdays 11:03am-12:00pm (or from 10:00am for 2 hour meetings) 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. IMSC (now incorporates Unicode ticket)
2. TTML issues, actions, PRs etc
3. Progress on HTMLCue proposal (placeholder)
4. WebVTT comments (placeholder)
5. AOB – please notify of any other AOB now!


Reminder re future milestones and meetings:

February Meetings:

Thursday 23rd February: TTWG phone meeting 1 hour

Further ahead:

Thursday 2nd March: TTWG phone meeting 1 hour (NM hard stop at end)
Thursday 9th March: TTWG phone meeting 1 hour
Thursday 16th March: TTWG phone meeting 1 hour
Thursday 23rd March: TTWG phone meeting 1 hour
Thursday 30th March: TTWG phone meeting 1 hour

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+ IMSC (now incorporates Unicode ticket)

IMSC 1.0.1 update


  *   Version naming – proposal to use 1.1 instead, update on short name change options
  *   Liaison draft
  *   Horizontal review (placeholder)

IMSC 1.0.1 FPWD 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.

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 pull requests:
Fix #211 by changing x y to leftOffset topOffset<https://github.com/w3c/imsc/pull/214>
Update XSDs and clarify parameter syntax<https://github.com/w3c/imsc/pull/209>
Open pull requests: none
New or discussed issues: none
Closed issues:
Behaviour if `ittp:activeArea` is non conformant is unclear<https://github.com/w3c/imsc/issues/211>
`<percentage>` not defined<https://github.com/w3c/imsc/issues/210>
Update the IMSC schema for 1.0.1<https://github.com/w3c/imsc/issues/208>


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 (see below)

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 Pull Requests:
Add note of deprecation of offset-time and fraction component in sept…<https://github.com/w3c/ttml2/pull/267>
Issue 0216 fontsize em on region<https://github.com/w3c/ttml2/pull/242>
Open TTML1 Pull Requests:
Clarify application of padding (#221)<https://github.com/w3c/ttml1/pull/233>
Open TTML2 Pull Requests:
Issue 0216 fontsize em on region<https://github.com/w3c/ttml2/pull/242>
New TTML1 Issues: none
New TTML2 Issues:
writingMode example + upright characters<https://github.com/w3c/ttml2/issues/266>
No mention of isolation for directional controls<https://github.com/w3c/ttml2/issues/265>
Link from tts:direction to tts:writing-mode<https://github.com/w3c/ttml2/issues/264>
It should be easier to specify direction for RTL script users <https://github.com/w3c/ttml2/issues/263>
Use a more typical example for tts:direction<https://github.com/w3c/ttml2/issues/262>
Should we allow more overhang for Chinese?<https://github.com/w3c/ttml2/issues/261>
Should rubyOverhang:allow overlap ideographs in Japanese?<https://github.com/w3c/ttml2/issues/260>
Simplify description of shiftRuby (editorial)<https://github.com/w3c/ttml2/issues/259>
How to space base characters where shiftRuby kicks in for group ruby?<https://github.com/w3c/ttml2/issues/258>
Make it clearer that tts:rubyOverflow only applies to text that is at the end of a line<https://github.com/w3c/ttml2/issues/257>
Please provide more illustrations and examples for the ruby sections<https://github.com/w3c/ttml2/issues/256>
How would someone display ruby inline?<https://github.com/w3c/ttml2/issues/255>
Default ruby position may be on the wrong side for tblr (eg. Mongolian)<https://github.com/w3c/ttml2/issues/254>
Support for bopomofo ruby needed<https://github.com/w3c/ttml2/issues/253>
Support for bopomofo ruby needed<https://github.com/w3c/ttml2/issues/253>
rubyOffset and line-spacing<https://github.com/w3c/ttml2/issues/252>
rubyAlign and wide ruby text <https://github.com/w3c/ttml2/issues/250>
NR is less than NB and NB is equal to 1<https://github.com/w3c/ttml2/issues/249>
rubyAlign withBase<https://github.com/w3c/ttml2/issues/248>
How to handle mismatched sequences in complex ruby <https://github.com/w3c/ttml2/issues/247>
Complex ruby is usually both mono and group ruby<https://github.com/w3c/ttml2/issues/246>
Why not use elements for ruby?<https://github.com/w3c/ttml2/issues/245>
Signaling HDR pixels in PNG for use with <image><https://github.com/w3c/ttml2/issues/244>
Closed TTML1 Issues: none
Closed TTML2 Issues:
Use of fractional seconds in clock-time expression in smpte mode<https://github.com/w3c/ttml2/issues/165>
Use of 'em' units in tts:fontSize on region element is not well defined.<https://github.com/w3c/ttml2/issues/216>
Discussed TTML1 Issues: none
Discussed TTML2 Issues:
Define HTML5 Mapping<https://github.com/w3c/ttml2/issues/127>
Add support for compositing a TTML2 document onto HDR video<https://github.com/w3c/ttml2/issues/233>
Add identifier support for related ordered sequences of documents<https://github.com/w3c/ttml2/issues/122>
Model for binding presentation values to externally defined parameters<https://github.com/w3c/ttml2/issues/149>

Focus topic for this week

Issue-239 3D and images<https://github.com/w3c/ttml2/issues/239>
Can we resolve this on the call?

Inclusion of foreign namespace elements – is it only permitted on metadata elements, or anywhere? Do we need additional conformance language? See also IMSC issue foreign namespace usage is underspecified<https://github.com/w3c/imsc/issues/213>

TTML1 Clarification of padding pull request Clarify application of padding (#221)<https://github.com/w3c/ttml1/pull/233>


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+ 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>
ACTION-473<https://www.w3.org/AudioVideo/TT/tracker/actions/473>[(edit)]<https://www.w3.org/AudioVideo/TT/tracker/actions/473/edit>     open    Contact co-chairs and essential parties on how to move forward on vtt; need an action plan<https://www.w3.org/AudioVideo/TT/tracker/actions/473>        Thierry Michel  2016-06-30      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>.<https://github.com/w3c/webvtt/pull/201>
Throw IndexSizeError if VTTRegion lines is set to -1<https://github.com/w3c/webvtt/pull/334>
Merged Pull requests:
Set |seen cue| to true when seeing a cue<https://github.com/w3c/webvtt/pull/332>
Actually throw IndexSizeError for out-of-range values in VTTRegion<https://github.com/w3c/webvtt/pull/331>
New issues:
Setting VTTRegion.lines to a negative value should throw<https://github.com/w3c/webvtt/issues/333>
VTTRegion API Overview regionAnchorY not defined<https://github.com/w3c/webvtt/issues/330>
Closed issues:
Unused Variable 'seen cue'<https://github.com/w3c/webvtt/issues/324>
Inconsistent VTTRegion API Definitions<https://github.com/w3c/webvtt/issues/329>
Recently discussed issues: none

Agenda+ AOB

References

Wiki http://www.w3.org/wiki/TimedText
Received on Wednesday, 22 February 2017 13:57:11 UTC