W3C home > Mailing lists > Public > public-tt@w3.org > February 2013

TTWG Meeting Minutes Feb 7, 2013

From: Monica Martin (MS OPEN TECH) <momartin@microsoft.com>
Date: Thu, 14 Feb 2013 15:06:01 +0000
To: "'public-tt@w3.org'" <public-tt@w3.org>
Message-ID: <48e71477150e48358f57e0346165d606@BY2PR03MB059.namprd03.prod.outlook.com>
See: http://www.w3.org/2013/02/07-tt-minutes.html


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

                               - DRAFT -

                Timed Text Working Group Teleconference

07 Feb 2013

   See also: [2]IRC log

      [2] http://www.w3.org/2013/02/07-tt-irc


          sean, +41.22.717.aaaa, mike, mmartin3, pal,
          Frans_deJong_EBU_, +1.617.347.aabb, Plh,
          +1.408.515.aacc, +1.617.347.aadd, mjordan




     * [3]Topics
         1. [4]Issues
     * [5]Summary of Action Items

   <Sean> just sent.

   <trackbot> Date: 07 February 2013


   Sean Hayes

   <scribe> scribenick: mmartin3

   <Sean> I havent prepared much for today

   <Sean> but I want to try and get a handle on what is
   outstanding to complete the SE

   Regrets Glenn Adams

   sean: No agenda. In between work items.
   ... SDP-US published [6]http://www.w3.org/TR/ttml10-sdp-us/
  ... TTML 1.0 SE draft published
   ... Quantify TTML 1.0.
   ... 1.0 issues to address in 1.1.

      [6] http://www.w3.org/TR/ttml10-sdp-us/



   <trackbot> ISSUE-156 -- semantics of missing #feature -- open


      [7] http://www.w3.org/AudioVideo/TT/tracker/issues/156

   mike: Should we discuss if #profile is author or for decoder?

   sean: Player is a known feature but wasn't originally
   ... Include in TTML 1.1.

   mike: Not an authoring profile but a directive to the processor
   to reject the document if features aren't supported.

   mmartin3: Glenn's proposal Actiion 53.

      [8] http://www.w3.org/AudioVideo/TT/tracker/actions/53

   mike: Address in 1.1 agreed.

   mmartin3: [9]http://dvcs.w3.org/hg/ttml/rev/81b0eec0faae Draft
   Glenn posted.

      [9] http://dvcs.w3.org/hg/ttml/rev/81b0eec0faae

   sean: Issue-156 is TTML 1.0.. Label as such.
   ... Issue-156 is in progress and close Feb 14.


   <trackbot> ISSUE-157 -- transformation profile -- open


     [10] http://www.w3.org/AudioVideo/TT/tracker/issues/157

   mike: Defer to TTMl 1.1.

   sean: Agreed.
   ... Issue-157 is TTML 1.1.

   pal: Aspect ratio discussion?

   sean: Get Netflix to join the meeting.

   mmartin: aacc is David Ronca for Netflix

   sean: Defer Issue-157 to Feb 14.


   <trackbot> ISSUE-162 -- profile discrepancy -- open


     [11] http://www.w3.org/AudioVideo/TT/tracker/issues/162

   mike: Could handle in SE.

   sean: Agree. Address Issue-162 in TTML 1.0 SE.
   ... Can you identify the discrepancies in profile definiton in
   TTML 1.0?

   mike: My questions were with the full dxfp.

   sean: Discuss Feb 14.

   Action Sean Call for Action to identify discrepancies in TTML
   1.0 on different profiles.

   <trackbot> Created ACTION-141 - Call for Action to identify
   discrepancies in TTML 1.0 on different profiles. [on Sean Hayes
   - due 2013-02-14].


   <trackbot> ISSUE-163 -- Clarify use of cell units in certain
   properties -- open


     [12] http://www.w3.org/AudioVideo/TT/tracker/issues/163

   sean: Some properties need clarification on what direction they
   are working in.
   ... Will work on to place on agenda for Feb 14.


   <trackbot> ISSUE-166 -- authoritative schemaLocation for
   authoritative schemas like TTML -- open


     [13] http://www.w3.org/AudioVideo/TT/tracker/issues/166

   sean: Where schemas live.
   ... PLH was is the common practice to reference schemas?
   ... Which is definitive one?

   plh: Make them informative outside of the specification to
   allow them to exist in one place and maintain.
   ... Changing practices over the years.
   ... Easier to maintain.

   sean: Remove from SE and then point to schemas.
   ... Open .xsd that can be referenced from tools.

   mike: Current annexes with schemas are normative.

   sean: Normative prose not XML.
   ... Don't preempt the text.

   plh: We're not changing an implementation or the semantics.

   mike: What about the multiple files that exist for TTML?
   ... Common location for .zip

   plh: Remove the text from the specification and PLH to provide
   location of the schemas.

   Resolved to remove the text from the specification and PLH to
   provide location of the schemas for TTML 1.0 SE.

   Action Glenn Remove the text from the specification and PLH to
   provide location of the schemas.

   <trackbot> Created ACTION-142 - Remove the text from the
   specification and PLH to provide location of the schemas. [on
   Glenn Adams - due 2013-02-14].

   Action PLH to Provide location to Glenn for unwrapped schemas.

   <trackbot> Created ACTION-143 - Provide location to Glenn for
   unwrapped schemas. [on Philippe Le Hégaret - due 2013-02-14].


   <trackbot> ISSUE-168 -- Padding on tt:p and tt:span elements --


     [14] http://www.w3.org/AudioVideo/TT/tracker/issues/168

   sean: This should be against TTML 1.1.

   mmartin3: Done.
   ... TTML.next.


   <trackbot> ISSUE-170 -- Section 5.2 para 8 is vague regarding
   optionality of specifying profile in case where profile is
   negotiated/determined by 'document interchange process' -- open


     [15] http://www.w3.org/AudioVideo/TT/tracker/issues/170

   sean: Issue indicates Glenn added text to TTML 1.0 SE.

   <scribe> ...In progress.

   UNKNOWN_SPEAKER: Address Feb 14 if Glenn is present.


   <trackbot> ISSUE-172 -- REGION-OF(E) pseudo-code doesn't match
   prose -- open


     [16] http://www.w3.org/AudioVideo/TT/tracker/issues/172

   sean: Glenn is working on that one. Defer. TTML 1.0 SE scope.

   mike: Issue-171?

   mmartin3: Glenn did post in Sept 2012:

     [17] http://dvcs.w3.org/hg/ttml/rev/94e02f131542


   <trackbot> ISSUE-171 -- need to clarify meaning of "prune" in
   9.3.2 -- pending review


     [18] http://www.w3.org/AudioVideo/TT/tracker/issues/171

   sean: Sean reads the text that Glenn proposed:
   ... Reasonable.

     [19] http://dvcs.w3.org/hg/ttml/rev/94e02f131542

   mike: Agreed.

   <scribe> Closed Issue-171 based on Glenn's text and integrate
   into TTML 1.0 SE:

     [20] http://dvcs.w3.org/hg/ttml/rev/94e02f131542.


   <trackbot> ISSUE-173 -- presentation semantics of control
   characters and other unmapped characters -- open


     [21] http://www.w3.org/AudioVideo/TT/tracker/issues/173

   sean: Defer to TTML 1.1.


   <trackbot> ISSUE-175 -- media type and file extension not
   registered -- open


     [22] http://www.w3.org/AudioVideo/TT/tracker/issues/175

   mike: Provided text in Dec 2012. Glenn rejected the text last

   sean: Will review comments from Glenn.
   ... TTML 1.0 SE.


   <trackbot> ISSUE-178 -- initial values and style set
   calculations are unclear, especially for transformable
   attributes -- open


     [23] http://www.w3.org/AudioVideo/TT/tracker/issues/178

   mike: 8.4 doesn't handle initial values for attributes.

   sean: Glenn is aware of the problem.

   Action Glenn Respond to Issue-178 from Dolan.

   <trackbot> Created ACTION-144 - Respond to Issue-178 from
   Dolan. [on Glenn Adams - due 2013-02-14].


   <trackbot> ISSUE-179 -- Interpreting the pixel measure -- open


     [24] http://www.w3.org/AudioVideo/TT/tracker/issues/179

   sean: Propose to add to discussion Feb 14. Action to me to
   propose revisions.


   <trackbot> ISSUE-180 -- regions relative to the root container
   -- open


     [25] http://www.w3.org/AudioVideo/TT/tracker/issues/180

   mike: Glenn felt strongly about leaving it unconstrained but
   addressed in SDP-US.
   ... Negative extents?

   sean: May be more than one interpretation on the semantics.
   ... Not constrain TTML.

   mike: Wouldn't know what to do with negative extents.

   sean: Position above the video and dependent on display
   processor if it is clipped.
   ... Say negative extents don't mean anything. Should we
   ... Ask Glenn to clarify if negative extents remain.
   ... Make non-negative integer.

   Action Glenn to identify if he would support a negative extent
   based on discussion to Issue-180?

   <trackbot> Created ACTION-145 - Identify if he would support a
   negative extent based on discussion to Issue-180? [on Glenn
   Adams - due 2013-02-14].

   mmartin3: Issue indicates we would clarify in TTML 1.0 SE and
   address more substantively in TTML 1.1.

   mike: Need to resolve negative extent.

   sean: Moving the region off the root container should be fine.
   Negative extent is not well defined however.
   ... Could handle if XSL-FO handles this.
   ... No other issues for today.
   ... No other business.
   ... Traveling for a couple of weeks. Interim chair?
   ... Adjourn.

   trackbot, end meeting

Summary of Action Items

   [End of minutes]

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Guessing input format: RRSAgent_Text_Format (score 1.00)

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WARNING: Replacing list of attendees.
Old list: [Microsoft] sean +41.22.717.aaaa mike
New list: sean +41.22.717.aaaa mike mmartin3 pal Frans_deJong_EBU_

Default Present: sean, +41.22.717.aaaa, mike, mmartin3, pal, Frans_deJon
g_EBU_, +1.617.347.aabb, Plh, +1.408.515.aacc, +1.617.347.aadd, mjordan
Present: sean +41.22.717.aaaa mike mmartin3 pal Frans_deJong_EBU_ +1.617
.347.aabb Plh +1.408.515.aacc +1.617.347.aadd mjordan

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<dbooth> Chair: dbooth

Found Date: 07 Feb 2013
Guessing minutes URL: [29]http://www.w3.org/2013/02/07-tt-minutes.html
People with action items:

     [29] http://www.w3.org/2013/02/07-tt-minutes.html

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Monica J Martin
Senior Program Manager
Microsoft Open Technologies, Inc.
A subsidiary of Microsoft Corporation
Received on Thursday, 14 February 2013 15:08:33 UTC

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