- From: Nigel Megitt <nigel.megitt@bbc.co.uk>
- Date: Thu, 16 Apr 2015 15:15:28 +0000
- To: Timed Text Working Group <public-tt@w3.org>
- Message-ID: <D1559057.1E7B2%nigel.megitt@bbc.co.uk>
All, Thanks for attending today's TTWG meeting. Minutes in HTML format can be found at: http://www.w3.org/2015/04/16-tt-minutes.html In text format: [1]W3C [1] http://www.w3.org/ Timed Text Working Group Teleconference 16 Apr 2015 See also: [2]IRC log [2] http://www.w3.org/2015/04/16-tt-irc Attendees Present nigel, tmichel, courtney, Frans, glenn Regrets dsinger, atai, jdsmith Chair nigel Scribe nigel Contents * [3]Topics 1. [4]This meeting 2. [5]Action items 3. [6]WebVTT * [7]Summary of Action Items __________________________________________________________ <trackbot> Date: 16 April 2015 <scribe> scribe: nigel This meeting nigel: This meeting will likely be action heavy following last week. AOB? group: no AOB nigel: I haven't managed to fix up the minutes from last week - hopefully I'll be able to do that tomorrow. ... In the meantime did anyone have any changes to make based on the draft minutes? group: No changes nigel: In that case it's mainly a tidying job not an editorial one. ... So for today we'll look at actions and I'll set aside some time for WebVTT as there's been progress there. glenn: I'm going to have to drop off this meeting; no progress on actions or issues to report. Action items action-378? <trackbot> action-378 -- Pierre-Anthony Lemieux to Draft smpte request including dispositions from action-369 and backgroundcolor initial value question -- due 2015-03-05 -- OPEN <trackbot> [8]http://www.w3.org/AudioVideo/TT/tracker/actions/378 [8] http://www.w3.org/AudioVideo/TT/tracker/actions/378 nigel: Pierre has posted a draft for review: [9]https://docs.google.com/document/d/1ohVIVM_lcsWooOPIsfnjHS7P nbRdON_ygydgo2V7fB4/edit ... Thanks for doing that. [9] https://docs.google.com/document/d/1ohVIVM_lcsWooOPIsfnjHS7PnbRdON_ygydgo2V7fB4/edit pal: Inline space was missing from nigel's draft. Was that just an omission? nigel: No particular reason - most likely I just didn't notice it in the original message from SMPTE. pal: I used the latest message from SMPTE from January that was sent to public-tt rather than the ... earlier one that was sent to member-tt. nigel: That may be the difference then. pal: SMPTE ST428-7 specifies character rotation on any character but the TTML2 spec only allows it on ... on normally horizontal characters in vertical writing modes. nigel: We need to make clear that SMPTE can come back to us if they have use cases that we haven't ... considered. pal: Exactly. We could ask generally for SMPTE's responses or specifically request a request for each item. nigel: I'd like to make it clear that we'd like a response on each item as this is very similar to a request ... for wide review type response. pal: We shouldn't hold open the issues until SMPTE has responded. nigel: Agreed - we should close these issues and if SMPTE or anyone else comes back with new problems ... we can open new issues. pal: [drafts specific request] nigel: The dispositions tool generates email text that looks like: ... "The Working Group's response to your comment is included below. ... Please review it carefully and *let us know by email at [address] if you agree with it or not ... before [date]*. pal: I would keep it less formal and provide this as a heads-up - if SMPTE has formal comments then ... they can send them or wait until wide review. nigel: Yes, the original comments predate the FPWD so they can't be construed as any kind of wide ... review of TTML2, more of TTML1 if anything. ... Okay let's keep it less formal for now. Current wording is ... "W3C TTWG looks forward to SMPTE’s feedback on these actions, if any, and to a continued collaboration." pal: I created the inline space text based on my understanding of ipd. nigel: That disposition text looks good to me. ... Since Glenn has written the ipd part of TTML2 it would be good to get his go-ahead for this disposition. <scribe> ACTION: glenn Review Disposition text for Inline space/ipd for SMPTE [recorded in [10]http://www.w3.org/2015/04/16-tt-minutes.html#action01] <trackbot> Created ACTION-399 - Review disposition text for inline space/ipd for smpte [on Glenn Adams - due 2015-04-23]. nigel: Once that action is complete then in my view we can send this to SMPTE via Mike and close the ... outstanding issues. ... I've marked action-378 as pending review. Action-378: Action-399 created specifically for Glenn to review ipd response <trackbot> Notes added to Action-378 Draft smpte request including dispositions from action-369 and backgroundcolor initial value question. nigel: Let's quickly step through the next actions... ... On Action-390 and 391 that's in progress - I'm held up with some CSS issues right now. courtney: I think David Singer has the dispositions for WebVTT covered but haven't talked to him about it re Action-394. nigel: He sent a spreadsheet around earlier in the week. ... There's been a bit of email conversation between me, David, Thierry and Silvia about this, offlist. ... So its safe to say progress is being made. tmichel: The Accessibility WG said they're working on the WebVTT review and will come back with a date. ... That was the last message from Julie I think. nigel: So we don't have a date for a date? tmichel: I'll wait a week and then ping them again. action-397? <trackbot> action-397 -- Pierre-Anthony Lemieux to Prepare cr2 transition version (after closing one remaining issue on imsc 1) -- due 2015-04-17 -- OPEN <trackbot> [11]http://www.w3.org/AudioVideo/TT/tracker/actions/397 [11] http://www.w3.org/AudioVideo/TT/tracker/actions/397 pal: On Action-397, we haven't resolved the outstanding issue with begin yet. I tried to go through ... SMIL and the best I found is that if begin is not specified then it's up to the time container. If you ... recursively follow that all the way to the top, then the begin of body is the begin of the external ... time container. Is that your understanding too? nigel: Yes. pal: I expect to have a resolution to that very shortly. nigel: There is a use case for no begin time, which is when you just want the document to be ... processed as soon as possible. This might happen in live use cases. Of course you don't really know ... when that display time will start. pal: If you have multiple consecutive documents then it's a lot easier if you specify begin times. nigel: Right, but that does give the container freedom to resolve the begin and end of each document. ... Maybe we should leave IMSC 1 as it is or add a note saying that if you have a time container ... then watch out for the unresolvable time scenario. pal: Alternately an external time container that says 'start at 5s' should define when t=0 is. nigel: For me, I think requiring a begin time is a bit too limiting, but highlighting the danger would be good. pal: Okay then a note highlighting the time resolution feature of TTML and the potential danger could ... be the way to go. nigel: You could say that time containers that only indicate 'start playing 5s in' should treat the ... resolved begin time as 'now - 5s' and step in as though that had happened. pal: I'll draft something suggesting that an absent begin should be treated as begin at 0. nigel: I'm happy to review that when I see the wording. issue-382? <trackbot> issue-382 -- Require a computed non-indefinite begin time -- open <trackbot> [12]http://www.w3.org/AudioVideo/TT/tracker/issues/382 [12] http://www.w3.org/AudioVideo/TT/tracker/issues/382 nigel: By the way, that discussion above related to issue-382. WebVTT nigel: I just want to make sure that there's an opportunity to raise any further WebVTT points not already ... raised? courtney: Not from me just now. nigel: We have no AOB, so I'll adjourn now. Thanks everyone! [adjourns meeting] Summary of Action Items [NEW] ACTION: glenn Review Disposition text for Inline space/ipd for SMPTE [recorded in [13]http://www.w3.org/2015/04/16-tt-minutes.html#action01] [End of minutes] __________________________________________________________ Minutes formatted by David Booth's [14]scribe.perl version 1.140 ([15]CVS log) $Date: 2015/04/16 15:14:02 $ [14] http://dev.w3.org/cvsweb/~checkout~/2002/scribe/scribedoc.htm [15] 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. 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Received on Thursday, 16 April 2015 15:16:03 UTC