- From: Pierre-Anthony Lemieux <pal@sandflow.com>
- Date: Thu, 5 Jun 2014 17:58:52 +0900
- To: Glenn Adams <glenn@skynav.com>
- Cc: Nigel Megitt <nigel.megitt@bbc.co.uk>, Timed Text Working Group <public-tt@w3.org>
Extensions moved to the IMSC 1.0 Namespace at [1]. [1] https://dvcs.w3.org/hg/ttml/raw-file/bee0c30a1a7d/ttml-ww-profiles/ttml-ww-profiles.html Best, -- Pierre On Fri, May 30, 2014 at 12:59 PM, Pierre-Anthony Lemieux <pal@sandflow.com> wrote: >> forcedDisplay could be defined in an IMSC specific extension namespace though; > > Sounds good! Thanks. > > -- Pierre > > > > On Thu, May 29, 2014 at 6:07 PM, Glenn Adams <glenn@skynav.com> wrote: >> couple of comments inline >> >> >> On Thu, May 29, 2014 at 11:01 PM, Nigel Megitt <nigel.megitt@bbc.co.uk> >> wrote: >>> >>> Minutes available at: http://www.w3.org/2014/05/29-tt-minutes.html >>> >>> >>> [1]W3C >>> >>> [1] http://www.w3.org/ >>> >>> - DRAFT - >>> >>> Timed Text Working Group Teleconference >>> >>> 29 May 2014 >>> >>> See also: [2]IRC log >>> >>> [2] http://www.w3.org/2014/05/29-tt-irc >>> >>> Attendees >>> >>> Present >>> pal, mike, nigel, jdsmith >>> >>> Regrets >>> Frans, de, Jong >>> >>> Chair >>> nigel >>> >>> Scribe >>> nigel >>> >>> Contents >>> >>> * [3]Topics >>> 1. [4]IMSC Issues raised >>> 2. [5]F2F In Geneva >>> * [6]Summary of Action Items >>> __________________________________________________________ >>> >>> <trackbot> Date: 29 May 2014 >>> >>> <scribe> scribeNick: nigel >>> >>> IMSC Issues raised >>> >>> issue-320? >>> >>> <trackbot> issue-320 -- Is normative SMPTE 2052 reference okay? >>> -- raised >>> >>> <trackbot> >>> [7]http://www.w3.org/AudioVideo/TT/tracker/issues/320 >>> >>> [7] http://www.w3.org/AudioVideo/TT/tracker/issues/320 >>> >>> nigel: 3 main concerns: licensing, quality of specification and >>> structural references. >>> >>> pal: SMPTE has requested that we add backgroundImage to TTML2 >>> so we can move to that definition in IMSC2 >>> >>> nigel: We can define backgroundImage in IMSC1 and then port it >>> into TTML2 and make the namespace change now rather than in >>> IMSC2. >>> >>> pal: Rather than guessing what the TTML2 solution will be now >>> we would be able to move more quickly if we reference the >>> SMPTE-TT definition and then update IMSC 2 when the TTML 2 >>> feature has been agreed. >>> ... We could guess wrong and end up with 3 approaches instead >>> of 2! >>> >>> nigel: That leaves the second concern of precision in terms of >>> 2052-1 feature definition. >>> >>> mike: If there is a gap then we can simply add the gaps to >>> IMSC1. >>> ... If there are any areas that are unclear in 2052-1 we should >>> a) communicate them to SMPTE and b) clarify it for our >>> purposes. >>> >>> pal: I don't have a concern with smpte:backgroundImage but >>> we'll address it when we find one. >>> >>> nigel: I've set this issue to Pending Review and added a note >>> for the approach we plan to take. >>> >>> issue-312? >>> >>> <trackbot> issue-312 -- forcedDisplay attribute is metadata so >>> should be in ttm not tts namespace -- open >>> >>> <trackbot> >>> [8]http://www.w3.org/AudioVideo/TT/tracker/issues/312 >>> >>> [8] http://www.w3.org/AudioVideo/TT/tracker/issues/312 >>> >>> nigel: I raised this due to the wording in the current draft of >>> IMSC 1 >>> >>> pal: Forced subtitles are those which are displayed regardless >>> of the user's preference to display or hide subtitles. An >>> example is translated subtitles in the Avatar film. >>> ... The idea is to deliver a single document that will work for >>> both the standard subtitle use case and the forced case, and >>> for the presentation to be dependent on the user preference. >>> >>> mike: In the context of a media file it's not simple to select >>> multiple TTML documents simultaneously so what's forced or not >>> forced needs to be in the same document. >>> ... Even when the subtitle track is not selected to be visible >>> then the decoder should present the forced subtitles on the >>> screen. The use case also includes translations of signs >>> visible in video in foreign languages. >>> ... Clearly we need more definition of the semantics of this >>> attribute. >>> >>> nigel: We have two change proposals that can provide for this >>> feature, which would result in changes in TTML2 >>> >>> pal: My proposal would be to adopt the current mechanism and >>> then switch in IMSC 2 dependent on TTML2. >>> >>> mike: concurs with pal. >>> >>> nigel: The forcedDisplay mode is currently in the ttml >>> namespace, yes? >>> >>> pal: It is, because I could not reference the DECE namespace. >>> One approach would be to define an IMSC1 specific namespaces, >>> or to keep in ttml namespaces and when we get to TTML2 >>> deprecate it or indicate 'don't use this'. >>> >>> mike: We can't extend the ttml namespace can we, without >>> modifying TTML1? >> >> we can only modify the ttml namespace(s) in TTML2 at this juncture; we can't >> add new features/extensions to TTML1; forcedDisplay could be defined in an >> IMSC specific extension namespace though; >> >> also, I would suggest that if a forcedDisplay signal is present in a >> document, there should also be a top-level metadata attribute (on tt >> element), such as usesForcedDisplay, that signals that forcedDisplay is used >> somewhere in the document. >> >>> >>> <scribe> ACTION: pal Add wording to describe semantics of >>> forcedDisplay in IMSC 1 for ISSUE-312 [recorded in >>> [9]http://www.w3.org/2014/05/29-tt-minutes.html#action01] >>> >>> <trackbot> Created ACTION-292 - Add wording to describe >>> semantics of forceddisplay in imsc 1 for issue-312 [on >>> Pierre-Anthony Lemieux - due 2014-06-05]. >>> >>> <scribe> ACTION: pal Research appropriate namespace for >>> forcedDisplay feature in IMSC 1 for ISSUE-312 [recorded in >>> [10]http://www.w3.org/2014/05/29-tt-minutes.html#action02] >>> >>> <trackbot> Created ACTION-293 - Research appropriate namespace >>> for forceddisplay feature in imsc 1 for issue-312 [on >>> Pierre-Anthony Lemieux - due 2014-06-05]. >>> >>> F2F In Geneva >>> >>> <Dsinger_> 70 for 2 days >>> >>> <Dsinger_> I would say use canteen myself >>> >>> nigel: There will be a fee for food which needs to be agreed in >>> advance, 70 CHF for 2 days for a proper lunch. >>> ... we can choose to use this or use the canteen which is >>> cheaper and more basic, and doesn't offer a proper 'sit down >>> lunch'. >>> ... It's in the same place either way, but there's no advanced >>> planning needed to buy food in the canteen. The sit-down option >>> is more 'civilised' but takes longer. >>> >>> mike: Subject to it being in the same place on the top floor at >>> EBU I think we should go for the non-prepaid option. >>> >>> [11]https://www.w3.org/wiki/TimedText/geneva2014 >>> >>> [11] https://www.w3.org/wiki/TimedText/geneva2014 >>> >>> <scribe> ACTION: nigel Create a sign-up wbs survey for Geneva. >>> [recorded in >>> [12]http://www.w3.org/2014/05/29-tt-minutes.html#action03] >>> >>> <trackbot> Created ACTION-294 - Create a sign-up wbs survey for >>> geneva. [on Nigel Megitt - due 2014-06-05]. >>> >>> nigel: we need some WebVTT folk too. >>> >>> <scribe> ACTION: dsinger Socialise the Geneva F2F meeting >>> amongst the WebVTT community [recorded in >>> [13]http://www.w3.org/2014/05/29-tt-minutes.html#action04] >>> >>> <trackbot> Created ACTION-295 - Socialise the geneva f2f >>> meeting amongst the webvtt community [on David Singer - due >>> 2014-06-05]. >>> >>> <Dsinger_> Bye >>> >>> Summary of Action Items >>> >>> [NEW] ACTION: dsinger Socialise the Geneva F2F meeting amongst >>> the WebVTT community [recorded in >>> [14]http://www.w3.org/2014/05/29-tt-minutes.html#action04] >>> [NEW] ACTION: nigel Create a sign-up wbs survey for Geneva. >>> [recorded in >>> [15]http://www.w3.org/2014/05/29-tt-minutes.html#action03] >>> [NEW] ACTION: pal Add wording to describe semantics of >>> forcedDisplay in IMSC 1 for ISSUE-312 [recorded in >>> [16]http://www.w3.org/2014/05/29-tt-minutes.html#action01] >>> [NEW] ACTION: pal Research appropriate namespace for >>> forcedDisplay feature in IMSC 1 for ISSUE-312 [recorded in >>> [17]http://www.w3.org/2014/05/29-tt-minutes.html#action02] >>> >>> [End of minutes] >>> __________________________________________________________ >>> >>> >>> Minutes formatted by David Booth's [18]scribe.perl version >>> 1.138 ([19]CVS log) >>> $Date: 2014-05-29 14:59:15 $ >>> __________________________________________________________ >>> >>> [18] http://dev.w3.org/cvsweb/~checkout~/2002/scribe/scribedoc.htm >>> [19] http://dev.w3.org/cvsweb/2002/scribe/ >>> >>
Received on Thursday, 5 June 2014 08:59:42 UTC