{agenda} TTWG Meeting 2017-03-30

This meeting is scheduled for up to 60m. 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=20170330T10&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. TTML issues, actions, etc
2. IMSC
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:

April Meetings:

Thursday 6th April: TTWG phone meeting 2 Hours (Nigel away)
Thursday 13th April: TTWG phone meeting 2 Hours
Thursday 20th April: TTWG phone meeting 2 Hours
Thursday 27th April: TTWG phone meeting 2 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+ 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: none
Closed TTML1 Issues: none
Closed TTML2 Issues:
Is rubyReserve crucial?<https://github.com/w3c/ttml2/issues/282>
Discussed TTML1 Issues: none
Discussed TTML2 Issues: none

Focus topic(s) for this week

Whitespace handling – what do we want to achieve? See also Clarify whitespace handling when xml:space="default"<https://github.com/w3c/imsc/issues/224>

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>
- we prioritised this last week alongside its TTML2 equivalent; I have not yet seen any pushes to the repo for it though.

Consider applying ipd or bpd to content images<https://github.com/w3c/ttml2/issues/140> – can we agree what we want to happen here?

There's no apparent use case for the "any" term in ttp:contentProfiles<https://github.com/w3c/ttml2/issues/139> – can we agree what we want to happen here?

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+ IMSC (now incorporates Unicode ticket)

(most) liaison messages requesting Wide Review sent.

What are our next steps? We will need to create a test suite for CR.

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.

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: none
Open pull requests: None
New or discussed issues:
Clarify whitespace handling when xml:space="default"<https://github.com/w3c/imsc/issues/224>
Closed issues: Clarification: Which mix of timing syntax is NOT recommended<https://github.com/w3c/imsc/issues/223>


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>
Merged Pull requests:
Drop line: and position: settings with invalid linealign/colalign<https://github.com/w3c/webvtt/pull/337>
Disallow external resources from data: URL resources in STYLE<https://github.com/w3c/webvtt/pull/343>
New issues: none
Closed issues:
Parsing: should drop line:100,invalid setting<https://github.com/w3c/webvtt/issues/336>
Recursively disallow external resources<https://github.com/w3c/webvtt/issues/341>
webvtt-cue-timestamp, ">" character is mandatory?<https://github.com/w3c/webvtt/issues/342>
Recently discussed issues: None

Agenda+ AOB

References

Wiki http://www.w3.org/wiki/TimedText