{minutes} TTWG Meeting 2018-12-06

Thanks all for joining today’s TTWG meeting. Minutes can be found in HTML format at https://www.w3.org/2018/12/06-tt-minutes.html


In text format:


   [1]W3C

      [1] http://www.w3.org/


                Timed Text Working Group Teleconference

06 Dec 2018

   See also: [2]IRC log

      [2] https://www.w3.org/2018/12/06-tt-irc


Attendees

   Present
          Andreas, Gary, Matt, Pierre, Nigel, Cyril, Thierry

   Regrets
          Glenn

   Chair
          Nigel

   Scribe
          nigel

Contents

     * [3]Topics
         1. [4]This meeting
         2. [5]TTML Profile Registry
         3. [6]Add reference to IMSC 1.0.1 tt-profile-registry#47
         4. [7]Fix the media type in the abstract
            tt-profile-registry#48
         5. [8]Fix #42 and #43 tt-profile-registry#50
         6. [9]Reorder tables alphabetically (#51).
            tt-profile-registry#54
         7. [10]TTWG Future Requirements
         8. [11]F2F meeting and joint F2F meeting with EBU
         9. [12]CSS
        10. [13]AOB
        11. [14]Meeting close
     * [15]Summary of Action Items
     * [16]Summary of Resolutions
     __________________________________________________________

   <scribe> scribe: nigel

This meeting

   Nigel: Today, let's welcome Matt Simpson from Red Bee/Ericsson
   who has joined us.

   Matt: Hi, I'm Head of Portfolio for Access Services at Red Bee,
   provider of live and prerecorded captioning, audio (video)
   ... description and sign language translation, particularly
   interested in the transmission of live captioning data in means
   ... that don't hark back to old linear broadcasting approaches
   like 608 or Teletext.

   Nigel: Thank you!
   ... [round-the-tables of who is on the call]
   ... For today we have, in principle, TTML Profile Registry but
   I haven't seen any movement there yet, and neither Glenn
   ... nor Mike are on the call, so we probably can't cover that.
   ... Then TTWG future requirements, joint f2f.

   Pierre: Even if we can't make progress we should spend 2
   minutes on the registry - we need to get the pull requests done
   ... somehow.

   Nigel: Okay let's do that.
   ... Back to the list, I don't think there's anything on CSS
   actions. Is there anything for WebVTT today?

   Gary: I don't think so.

   Thierry: Not for me either.

   Nigel: Any other business or points to make sure we cover?

   group: [silence]

   Nigel: Before we move on a very quick look ahead to the rest of
   the year. Next week I will be at an ITU/EC event in Vienna
   ... but hope to be able to run the call as usual. Then Dec 20th
   is our last call of the year. There will be no call on 27th
   ... or 3rd January, so our first call in 2019 will be 10th
   January.
   ... The other thing to remind everyone about is our window for
   gathering and describing requirements for our work
   ... in 2019 is open until Dec 20th - things added after that
   may not have time for proper consideration. The plan is to
   ... have materials submitted for review and discussion prior to
   our face to face meeting on 31st January in Geneva.
   ... I'll add to the AOB list that ITU/EC meeting in case
   there's any input from this group.

TTML Profile Registry

   Nigel: As Pierre pointed out we have 4 pull requests open.
   ... As a point of normal process, we generally allow a 2 week
   review period after which we assume that if there is no
   ... objection then we can merge the pull request.
   ... 3 out of the 4 open pulls here need a review before GitHub
   will allow me to merge them.

   github: [17]https://github.com/w3c/tt-profile-registry/pull/47


     [17] https://github.com/w3c/tt-profile-registry/pull/47


Add reference to IMSC 1.0.1 tt-profile-registry#47

   github: [18]https://github.com/w3c/tt-profile-registry/pull/47


     [18] https://github.com/w3c/tt-profile-registry/pull/47


   Nigel: This has no objections, one approval, so we just need to
   ask the Editors to merge it.
   ... Any objections to doing that?

   group: [silence]

   RESOLUTION: Editors to merge this Pull Request please.

Fix the media type in the abstract tt-profile-registry#48

   <github-bot> nigel, Sorry, I don't understand that command. Try
   'help'.

   github: [19]https://github.com/w3c/tt-profile-registry/pull/48


     [19] https://github.com/w3c/tt-profile-registry/pull/48


   Nigel: This pull request makes one small fix for correctness -
   if someone can please approve it we can go ahead and
   ... request that it be merged.

   Pierre: I'm looking at it now.
   ... [just double checking it is the correct value] Yes.
   ... That one should be non-controversial.
   ... [approves]

   Nigel: Thank you
   ... Any objections to requesting that the Editors merge this?

   group: [silence]

   RESOLUTION: Editors to merge this Pull Request please.

Fix #42 and #43 tt-profile-registry#50

   github: [20]https://github.com/w3c/tt-profile-registry/pull/50


     [20] https://github.com/w3c/tt-profile-registry/pull/50


   Andreas: I have limited availability to review this over the
   next week or so.

   Pierre: The note about the ebuttm: prefix seems to bind that
   prefix forever.

   Nigel: The intent is merely to explain its usage in this
   document.
   ... The ebuttm:conformsToStandard element is no longer defined
   by any of the referenced specifications in the table,
   ... because EBU moved its definition to a different document,
   hence the explanatory note.

   Pierre: I'll propose some alternative wording.

   Nigel: Thank you.
   ... If everyone with an interest in this could please look at
   this pull request and review it that would be very helpful.

   SUMMARY: @palemieux to propose a change, all to review

Reorder tables alphabetically (#51). tt-profile-registry#54

   github: [21]https://github.com/w3c/tt-profile-registry/pull/54


     [21] https://github.com/w3c/tt-profile-registry/pull/54


   Nigel: It looks like this one will need to be revisited after
   the other pull requests have been merged, and may need to
   ... be updated further.

   SUMMARY: Check this again after the other pull requests have
   been merged.

TTWG Future Requirements

   Nigel: I see one new requirement issue raised, thanks to IRT
   (Peter tho Pesch in this case), and he also kindly sent a
   ... covering email describing it.
   ... Unless anyone especially wants to discuss it right now we
   don't need to, but thank you for raising it.
   ... For the CSS property requirement I plan to document the
   range of possibilities as I see them and if there is a BBC view
   ... about which option to choose then I will document that too.
   I expect this to lead to a significant amount of discussion
   ... and thought for how we get to a good end result.
   ... That's because of the overlap between TTML and CSS and the
   huge range of CSS properties, and also the potential
   ... for clashes.

   Pierre: Yes, as mentioned last time, it could be that for any
   CSS property not all of the values can be straightforwardly
   ... applied. There may need to be interop or testing in some
   cases. I really like the idea of converging CSS and TTML, so
   ... no objection there, but importing in bulk is not the right
   way to get to interop.
   ... Things we could consider: we could have a document and folk
   interested in properties could write them down and we
   ... can iterate over that document. Whether that is on the Rec
   track or not is a decision we can make later. At first we
   ... should identify which properties are relevant and which are
   not, and write them down and tests for them. For example
   ... anything relating to writing direction is a non-trivial
   mapping.
   ... I can clarify that on the issue - my concern is not so much
   with adding functionality to TTML especially where there's
   ... a desire to do so, it's doing it in bulk without the proper
   mapping that will ensure interop and specifying it and testing
   it.

   Nigel: Of course one of the notable things about CSS is that in
   some cases there are CSS properties which are considered
   ... to be stable and usable in the annual CSS snapshots, but
   the specifications are still in Candidate Recommendation,
   ... sometimes the reason being a lack of tests. So we should
   think carefully about our approach to adopting CSS properties
   ... that are in the snapshot, therefore widely deployed and
   used, but CSS tests may not be fully available.
   ... It's good to add this to the pile of considerations.
   ... Anything else on any of the TTWG requirements or our
   process or anything else relating to them?

   group: [silence]

F2F meeting and joint F2F meeting with EBU

   Nigel: This is a placeholder topic at the moment. Does anyone
   have any questions or points to raise on this topic?
   ... (I don't think there is any development since last week)

   group: [nothing to discuss]

CSS

   Nigel: CSS published a WD of CSS Text Level 3 today

   [22]CSS Text Level 3 Working Draft

     [22] https://www.w3.org/TR/css-text-3/


   Nigel: I thought from memory this would have our line alignment
   requirement in, but I can't see it right now.

AOB

   Nigel: I've been invited to present and participate in a panel
   at the ITU/EC Accessible Europe: ICT for ALL event next week.
   ... If anyone wants me to raise or mention anything in my role
   as Chair here then please let me know.

   [23]Accessible Europe: ICT for ALL event

     [23] https://www.itu.int/en/ITU-D/Regional-Presence/Europe/Pages/Events/2018/AE/AccessibleEurope.aspx


   scribe: I plan to talk briefly about subtitles and captions
   standards convergence and future standards for audio
   description.
   ... This is mainly for info but if you do want to push anything
   my way then please let me know.

Meeting close

   Nigel: We've hit the end of our agenda for today so let's
   adjourn. Thank you everyone. [adjourns meeting]

Summary of Action Items

Summary of Resolutions

    1. [24]Editors to merge this Pull Request please.
    2. [25]Editors to merge this Pull Request please.

   [End of minutes]
     __________________________________________________________


    Minutes manually created (not a transcript), formatted by
    David Booth's [26]scribe.perl version 1.154 ([27]CVS log)
    $Date: 2018/12/06 16:03:24 $

     [26] http://dev.w3.org/cvsweb/~checkout~/2002/scribe/scribedoc.htm

     [27] http://dev.w3.org/cvsweb/2002/scribe/






----------------------------

http://www.bbc.co.uk

This e-mail (and any attachments) is confidential and may contain personal views which are not the views of the BBC unless specifically stated.
If you have received it in error, please delete it from your system.
Do not use, copy or disclose the information in any way nor act in reliance on it and notify the sender immediately.
Please note that the BBC monitors e-mails sent or received.
Further communication will signify your consent to this.

---------------------

Received on Thursday, 6 December 2018 16:06:00 UTC