{agenda} TTWG Meeting 2017-03-16 from Nigel Megitt on 2017-03-14 (public-tt@w3.org from March 2017)

From: Nigel Megitt <nigel.megitt@bbc.co.uk>
Date: Tue, 14 Mar 2017 17:09:05 +0000
To: "public-tt@w3.org" <public-tt@w3.org>
Message-ID: <D4EDD428.3A5C0%nigel.megitt@bbc.co.uk>
This meeting is scheduled for up to 60m. Please be ready for a prompt start at 10:03am Boston time.

As agreed on March 2, during March we will begin at the "old" time of 10am Boston.

Our teleconference is scheduled with reference to Boston Time, the correct time of this teleconference in your locale may change.

Note that DST has now come in for the US, please check the following link!
Check https://www.timeanddate.com/worldclock/fixedtime.html?iso=20170316T10&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. IMSC
2. TTML issues, actions, 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:

March Meetings:

Thursday 23rd March: TTWG phone meeting 2 hours
Thursday 30th March: TTWG phone meeting 2 hours

Further ahead:

Thursday 6th April: TTWG phone meeting ? Hours (Nigel away)
Thursday 13th April: TTWG phone meeting ? Hours
Thursday 20th April: TTWG phone meeting ? Hours
Thursday 27th April: TTWG phone meeting ? Hours

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)

Are we ready to move to a WD for Wide Review + Horizontal Review?
 - need to update the SOTD and set a Wide Review deadline
 - anything else?

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: Editorial clarification of foreign namespace provisions<https://github.com/w3c/imsc/pull/216>
Open pull requests: None
New or discussed issues: None
Closed issues: foreign namespace usage is underspecified<https://github.com/w3c/imsc/issues/213>


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?

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: None
Open TTML1 Pull Requests:
Clarify application of padding (#221)<https://github.com/w3c/ttml1/pull/233>
Open TTML2 Pull Requests:
Issue 0203 add examples of ja features part 2<https://github.com/w3c/ttml2/pull/273>
New TTML1 Issues: none
New TTML2 Issues:
Upright orientation involves more than just glyph orientation <https://github.com/w3c/ttml2/issues/281>
Sideways shouldn't be tied to tblr vs tbrl<https://github.com/w3c/ttml2/issues/280>
tts:textCombine and combining characters<https://github.com/w3c/ttml2/issues/278>
Incorporate CSS advances into TTML vertical text handling<https://github.com/w3c/ttml2/issues/277>
Definition of "[content element]" does not match Section 8.1.<https://github.com/w3c/ttml2/issues/276>
Closed TTML1 Issues: none
Closed TTML2 Issues:
Default directions in mixed textOrientation should use TR50 <https://github.com/w3c/ttml2/issues/279>
Use of 'em' units in tts:fontSize on region element is not well defined.<https://github.com/w3c/ttml2/issues/216>
Ambiguous definition of "empty" in Synchronic Document Construction<https://github.com/w3c/ttml2/issues/212>
Discussed TTML1 Issues: none
Discussed TTML2 Issues:
3D and images<https://github.com/w3c/ttml2/issues/239>
Inline space.<https://github.com/w3c/ttml2/issues/53>
Specify date as well as hours, minutes and seconds in time expressions<https://github.com/w3c/ttml2/issues/96>
Use of offset-time expression in smpte mode<https://github.com/w3c/ttml2/issues/160>
<emphasis-position> vs CSS text-emphasis-position + Mongolian<https://github.com/w3c/ttml2/issues/240>
Issue 0203 add examples of ja features part 2<https://github.com/w3c/ttml2/pull/273>
rubyAlign withBase<https://github.com/w3c/ttml2/issues/248>
Support for bopomofo ruby needed<https://github.com/w3c/ttml2/issues/253>
Default ruby position may be on the wrong side for tblr (eg. Mongolian)<https://github.com/w3c/ttml2/issues/254>


Focus topic(s) for this week

Issue #53 Inline space. <https://github.com/w3c/ttml2/issues/53>  Can we agree a group disposition on negative inline space?

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

Issue #96 Specify date as well as hours, minutes and seconds in time expressions <https://github.com/w3c/ttml2/issues/96>  Editor considers this closed but there is no resolution to the problem of midnight crossing. Steps to resolve: draft specification text?

Issue #160 Use of offset-time expression in smpte mode <https://github.com/w3c/ttml2/issues/160> Is the issue clear and can we agree what the solution should look like?


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>

Discussion on WebVTT review feedback and next steps.

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

Open Pull requests:
Drop line: and position: settings with invalid linealign/colalign<https://github.com/w3c/webvtt/pull/337>
Add requirements for region identifier to exist.<https://github.com/w3c/webvtt/pull/201>
Merged Pull requests:
Use HTML's rules for parsing floating-point number values<https://github.com/w3c/webvtt/pull/339>
Add Security and Privay section<https://github.com/w3c/webvtt/pull/340>
Editorial: Use IDL typedef for line and position members<https://github.com/w3c/webvtt/pull/335>
New issues:
Recursively disallow external resources<https://github.com/w3c/webvtt/issues/341>
Closed issues:
"Interpret linepos as a (potentially signed) rea…"<https://github.com/w3c/webvtt/issues/338>
Add Security and Privacy Considerations section<https://github.com/w3c/webvtt/issues/323>
Recently discussed issues:
Drop line: and position: settings with invalid linealign/colalign<https://github.com/w3c/webvtt/pull/337>

Agenda+ AOB

References

Wiki http://www.w3.org/wiki/TimedText
Received on Tuesday, 14 March 2017 17:09:34 UTC