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{agenda} TTWG Meeting 29/5/2014

From: Nigel Megitt <nigel.megitt@bbc.co.uk>
Date: Wed, 28 May 2014 15:22:46 +0000
To: Timed Text Working Group <public-tt@w3.org>
Message-ID: <CFABBB21.1E773%nigel.megitt@bbc.co.uk>
This meeting is scheduled for up to 60m. I don't expect we can complete this agenda within the allocated period!


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



Please check <http://www.timeanddate.com/worldclock/fixedtime.html?iso=20140213T10&p1=43> <http://www.timeanddate.com/worldclock/fixedtime.html?iso=20140220T10&p1=43> <http://www.timeanddate.com/worldclock/fixedtime.html?iso=20140227T10&p1=43%C2%A0> <http://www.timeanddate.com/worldclock/fixedtime.html?iso=20140306T10&p1=43%C2%A0> <http://www.timeanddate.com/worldclock/fixedtime.html?iso=20140313T10&p1=43> <http://www.timeanddate.com/worldclock/fixedtime.html?iso=20140320T10&p1=43> <http://www.timeanddate.com/worldclock/fixedtime.html?iso=20140327T10&p1=43> <http://www.timeanddate.com/worldclock/fixedtime.html?iso=20140417T10&p1=43> <http://www.timeanddate.com/worldclock/fixedtime.html?iso=20140424T10&p1=43> <http://www.timeanddate.com/worldclock/fixedtime.html?iso=20140501T10&p1=43> <http://www.timeanddate.com/worldclock/fixedtime.html?iso=20140508T10&p1=43> <http://www.timeanddate.com/worldclock/fixedtime.html?iso=20140515T10&p1=43> <http://www.timeanddate.com/worldclock/fixedtime.html?iso=20140522T10&p1=43> http://www.timeanddate.com/worldclock/fixedtime.html?iso=20140529T10&p1=43




Thursdays 10:00am-11:00am Boston local


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Agenda+ Assign Roles


Chair: Nigel Megitt


Scribe: [to assign during meeting]


Regrets:


Activity since last meeting: MPEG liaison re codecs, major update to profile related material (change proposal 12), IMSC issues raised


Agenda+ Prioritise discussion for this meeting


Check-point for order of topics – I'd suggest:

1. MIME codecs parameter is highest priority

2. Profiles and features (change proposal 12 etc), with extensions/restrictions etc as recently added,

3. Geneva F2F,

4. Change proposal 2,

5. Raised issues,

6. I can't believe we'll get this far.


And stop when time runs out – I'm happy to set and impose time limits on these topics if members would like to take that approach.


Agenda+ MPEG liaison re MIME Codecs parameter


This is scheduled for a major discussion for this topic since all main contributors will hopefully attend.


ISSUE-305<https://www.w3.org/AudioVideo/TT/tracker/issues/305>[(edit)]<https://www.w3.org/AudioVideo/TT/tracker/issues/305/edit>
Profile short names     OPEN    Register of TTML profiles and short names<https://www.w3.org/AudioVideo/TT/tracker/issues/305>  2014-05-01              1       Timed Text Working Group<https://www.w3.org/AudioVideo/TT/tracker/>

ISSUE-280<https://www.w3.org/AudioVideo/TT/tracker/issues/280>[(edit)]<https://www.w3.org/AudioVideo/TT/tracker/issues/280/edit>
nested-profiles OPEN    Add ability to define a profile from multiple profiles.<https://www.w3.org/AudioVideo/TT/tracker/issues/280>    2013-09-06      TTML2   0

ACTION-284<https://www.w3.org/AudioVideo/TT/tracker/actions/284>[(edit)]<https://www.w3.org/AudioVideo/TT/tracker/actions/284/edit>     open    Create the registry page<https://www.w3.org/AudioVideo/TT/tracker/actions/284>  Glenn Adams     2014-05-01



ACTION-290<http://www.w3.org/AudioVideo/TT/tracker/actions/290>[(edit)]<http://www.w3.org/AudioVideo/TT/tracker/actions/290/edit>       open    Describe the history for how we got to the signalling needed for mpeg that came from dece for issue-305.<http://www.w3.org/AudioVideo/TT/tracker/actions/290>   Mike Dolan      2014-05-29




Liaison in mail archive at [1] and text reproduced in ACTION-282. Response at [2].


Agenda+ F2F planning

Placeholder for F2F diarised for Sep 16 & 17 to be hosted by EBU in Geneva. Wiki page for this meeting is at [3]. Agenda discussion.

What do potential attendees feel about fees for this meeting, to cover the cost of lunch?

Agenda+ Action items pending review

ID      State   Title   Person  Due Date        Associated with
ACTION-232<http://www.w3.org/AudioVideo/TT/tracker/actions/232>[(edit)]<http://www.w3.org/AudioVideo/TT/tracker/actions/232/edit>       pending review  Consider also defining @validation on ttp:profile, in addition to (override) tt:tt<http://www.w3.org/AudioVideo/TT/tracker/actions/232> Glenn Adams     2014-04-01
ACTION-254<http://www.w3.org/AudioVideo/TT/tracker/actions/254>[(edit)]<http://www.w3.org/AudioVideo/TT/tracker/actions/254/edit>       pending review  Add errata note for ttml1 pointing at constraint in smil prohibiting dur of zero, add normative text to ttml2<http://www.w3.org/AudioVideo/TT/tracker/actions/254>      Glenn Adams     2014-04-01      zero duration<http://www.w3.org/AudioVideo/TT/tracker/issues/299>
ACTION-291<http://www.w3.org/AudioVideo/TT/tracker/actions/291>[(edit)]<http://www.w3.org/AudioVideo/TT/tracker/actions/291/edit>       pending review  Find the related issue that describes the need to restrict or extend individual profile features<http://www.w3.org/AudioVideo/TT/tracker/actions/291>   Nigel Megitt    2014-05-29

Agenda+ Action items overdue and due next week

ID      State   Title   Person  Due Date        Associated with
ACTION-207<http://www.w3.org/AudioVideo/TT/tracker/actions/207>[(edit)]<http://www.w3.org/AudioVideo/TT/tracker/actions/207/edit>       open    Add round-down clarification to "closest" language, see issue-259<http://www.w3.org/AudioVideo/TT/tracker/actions/207>  Glenn Adams     2014-04-01
ACTION-234<http://www.w3.org/AudioVideo/TT/tracker/actions/234>[(edit)]<http://www.w3.org/AudioVideo/TT/tracker/actions/234/edit>       open    Explore box-decoration-break in response to issue-286<http://www.w3.org/AudioVideo/TT/tracker/actions/234>      Glenn Adams     2014-04-01
ACTION-236<http://www.w3.org/AudioVideo/TT/tracker/actions/236>[(edit)]<http://www.w3.org/AudioVideo/TT/tracker/actions/236/edit>       open    Review consistent use of "root temporal extent" in both ttml 2 and ttml 1 se<http://www.w3.org/AudioVideo/TT/tracker/actions/236>       Glenn Adams     2014-04-01
ACTION-258<http://www.w3.org/AudioVideo/TT/tracker/actions/258>[(edit)]<http://www.w3.org/AudioVideo/TT/tracker/actions/258/edit>       open    Work with pal to resolve edits needed for issue-259 comments<http://www.w3.org/AudioVideo/TT/tracker/actions/258>       Glenn Adams     2014-04-01
ACTION-285<http://www.w3.org/AudioVideo/TT/tracker/actions/285>[(edit)]<http://www.w3.org/AudioVideo/TT/tracker/actions/285/edit>       open    Implement proposed errata in issue-304<http://www.w3.org/AudioVideo/TT/tracker/actions/285>     Glenn Adams     2014-05-01      Non-Standard Unqualified Attributes<http://www.w3.org/AudioVideo/TT/tracker/issues/304>
ACTION-286<http://www.w3.org/AudioVideo/TT/tracker/actions/286>[(edit)]<http://www.w3.org/AudioVideo/TT/tracker/actions/286/edit>       open    Send an email to public-tt describing the ttv hosting site at w3c<http://www.w3.org/AudioVideo/TT/tracker/actions/286>  Glenn Adams     2014-05-01
ACTION-287<http://www.w3.org/AudioVideo/TT/tracker/actions/287>[(edit)]<http://www.w3.org/AudioVideo/TT/tracker/actions/287/edit>       open    Elaborate on wording in §4 on namespace extension in ttml2 and as an errata to ttml1<http://www.w3.org/AudioVideo/TT/tracker/actions/287>       Glenn Adams     2014-05-08

Agenda+ Issues discussed and raised over the past week (selected subset)


ID      State   Title   Raised on       Product Open Actions
ISSUE-199<http://www.w3.org/AudioVideo/TT/tracker/issues/199>[(edit)]<http://www.w3.org/AudioVideo/TT/tracker/issues/199/edit>  CLOSED  timeExpression to video frame calculation is unclear in some cases<http://www.w3.org/AudioVideo/TT/tracker/issues/199>  2013-01-09      TTML 1.0        0
ISSUE-230<http://www.w3.org/AudioVideo/TT/tracker/issues/230>[(edit)]<http://www.w3.org/AudioVideo/TT/tracker/issues/230/edit>
Forced display  OPEN    Forced display<http://www.w3.org/AudioVideo/TT/tracker/issues/230>      2013-05-30      TTML2   0
ISSUE-263<http://www.w3.org/AudioVideo/TT/tracker/issues/263>[(edit)]<http://www.w3.org/AudioVideo/TT/tracker/issues/263/edit>  PENDING REVIEW  profile feature set may not match intended feature constraints<http://www.w3.org/AudioVideo/TT/tracker/issues/263>      2013-07-17      TTML Simple Delivery Profile for Closed Captions (US)   0
ISSUE-305<http://www.w3.org/AudioVideo/TT/tracker/issues/305>[(edit)]<http://www.w3.org/AudioVideo/TT/tracker/issues/305/edit>
Profile short names     PENDING REVIEW  Register of TTML profiles and short names<http://www.w3.org/AudioVideo/TT/tracker/issues/305>   2014-05-01              0
ISSUE-309<http://www.w3.org/AudioVideo/TT/tracker/issues/309>[(edit)]<http://www.w3.org/AudioVideo/TT/tracker/issues/309/edit>
Image profile fails WCAG 1.2    OPEN    Image profile needs to permit text equivalent<http://www.w3.org/AudioVideo/TT/tracker/issues/309>       2014-05-21      TTML IMSC 1.0   0
ISSUE-310<http://www.w3.org/AudioVideo/TT/tracker/issues/310>[(edit)]<http://www.w3.org/AudioVideo/TT/tracker/issues/310/edit>
progressivelyDecodable needs hierarchical definition    OPEN    Forward reference rule doesn't take into account child elements<http://www.w3.org/AudioVideo/TT/tracker/issues/310>     2014-05-21      TTML IMSC 1.0   0
ISSUE-312<http://www.w3.org/AudioVideo/TT/tracker/issues/312>[(edit)]<http://www.w3.org/AudioVideo/TT/tracker/issues/312/edit>
forcedDisplay should be in ttm  OPEN    forcedDisplay attribute is metadata so should be in ttm not tts namespace<http://www.w3.org/AudioVideo/TT/tracker/issues/312>   2014-05-21      TTML IMSC 1.0   0
ISSUE-317<http://www.w3.org/AudioVideo/TT/tracker/issues/317>[(edit)]<http://www.w3.org/AudioVideo/TT/tracker/issues/317/edit>
IMSC should not require frame alignment RAISED  IMSC should not require frame alignment<http://www.w3.org/AudioVideo/TT/tracker/issues/317>     2014-05-22      TTML IMSC 1.0   0
ISSUE-318<http://www.w3.org/AudioVideo/TT/tracker/issues/318>[(edit)]<http://www.w3.org/AudioVideo/TT/tracker/issues/318/edit>
HRM glyph copy assumes no sub-pixel positioning PENDING REVIEW  Hypothetical Render Model glyph copy assumes no sub-pixel positioning<http://www.w3.org/AudioVideo/TT/tracker/issues/318>       2014-05-22      TTML IMSC 1.0   0
ISSUE-319<http://www.w3.org/AudioVideo/TT/tracker/issues/319>[(edit)]<http://www.w3.org/AudioVideo/TT/tracker/issues/319/edit>
HRM should be a processor compliance test       RAISED  HRM should be a processor compliance test and allow different levels of complexity for different use cases<http://www.w3.org/AudioVideo/TT/tracker/issues/319>  2014-05-23      TTML IMSC 1.0   0
ISSUE-320<http://www.w3.org/AudioVideo/TT/tracker/issues/320>[(edit)]<http://www.w3.org/AudioVideo/TT/tracker/issues/320/edit>
Is normative SMPTE 2052 reference okay? RAISED  Is normative SMPTE 2052 reference okay?<http://www.w3.org/AudioVideo/TT/tracker/issues/320>     2014-05-23      TTML IMSC 1.0   0
ISSUE-321<http://www.w3.org/AudioVideo/TT/tracker/issues/321>[(edit)]<http://www.w3.org/AudioVideo/TT/tracker/issues/321/edit>  RAISED  typo - s/ttp:feature/ttp:extension/ in 5th paragraph of 6.1.5<http://www.w3.org/AudioVideo/TT/tracker/issues/321>       2014-05-24      TTML 1.0 (Editorial)    0



ISSUE-306<http://www.w3.org/AudioVideo/TT/tracker/issues/306>[(edit)]<http://www.w3.org/AudioVideo/TT/tracker/issues/306/edit>
Fractional time expressions in N.2 media timeBase       RAISED  Appendix N.2 omits fractional time expressions<http://www.w3.org/AudioVideo/TT/tracker/issues/306>      2014-05-02      TTML 1.0        0
ISSUE-313<http://www.w3.org/AudioVideo/TT/tracker/issues/313>[(edit)]<http://www.w3.org/AudioVideo/TT/tracker/issues/313/edit>
Presented Region is informative only    RAISED  Presented Region section is informative only<http://www.w3.org/AudioVideo/TT/tracker/issues/313>        2014-05-21      TTML IMSC 1.0   0
ISSUE-314<http://www.w3.org/AudioVideo/TT/tracker/issues/314>[(edit)]<http://www.w3.org/AudioVideo/TT/tracker/issues/314/edit>
Temporally active is not defined for regions    RAISED  Temporally active is not defined for regions<http://www.w3.org/AudioVideo/TT/tracker/issues/314>        2014-05-21      TTML 1.0        0
ISSUE-315<http://www.w3.org/AudioVideo/TT/tracker/issues/315>[(edit)]<http://www.w3.org/AudioVideo/TT/tracker/issues/315/edit>
Maximum number of regions should be a processor constraint      RAISED  Maximum number of regions should be a processor constraint<http://www.w3.org/AudioVideo/TT/tracker/issues/315>  2014-05-21      TTML IMSC 1.0   0


Agenda+ Change Proposals – progress and review

Change Proposal 12 [6] has not been updated but Glenn has made changes that address many of the issues in there [7].
Can we agree to set the default @validationAction to "warn" and make it a recommendation to the validator rather than mandatory?

Change Proposal 2 [5] has been implemented and has been pending review for over 1 month
Can we mark as CLOSED – IMPLEMENTED?

Change Proposal Index is at [4].
Which Change Proposals would owners like to progress next? There are 20 open CPs.

Timeline updated in 13th Mar meeting:
January-March: Clean up and complete CPs
April-July: Draft, iterate and edit solutions to CP issues
August: Last Call

Agenda+ AOB


References

[1] MPEG Liaison re Codecs parameter http://lists.w3.org/Archives/Public/public-tt/2014Apr/0005.html

[2] W3C response to MPEG Liaison re Codecs parameter http://lists.w3.org/Archives/Public/public-tt/2014Apr/0025.html

[3] Geneva F2F meeting https://www.w3.org/wiki/TimedText/geneva2014

[4] Change Proposals at http://www.w3.org/wiki/TTML/ChangeProposalIndex

[5] Change Proposal 2 https://www.w3.org/wiki/TTML/changeProposal002

[6] Change Proposal 12 https://www.w3.org/wiki/TTML/changeProposal012

[7] Glenn's email re major update to profile related material http://lists.w3.org/Archives/Public/public-tt/2014May/0111.html

Tracker http://www.w3.org/AudioVideo/TT/trackerTTML

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





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Received on Wednesday, 28 May 2014 15:23:22 UTC

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