W3C

- DRAFT -

Timed Text Working Group Teleconference

22 Mar 2012

Agenda

See also: IRC log

Attendees

Present
sean_, glenn, +49.893.aaaa, +44.147.383.aabb, johnb, andreas, +1.858.882.aacc, miked, sean
Regrets
miked
Chair
sean
Scribe
glenn

Contents


<trackbot> Date: 22 March 2012

<scribe> Scribe: glenn

Agenda

Charter Update

http://lists.w3.org/Archives/Public/public-tt/2012Mar/0033.html

sean: is LC for May for 2nd Ed reasonable?
... if any new features, will need LC; otherwise, may not need LC
... thinks there will not be new features, i.e., substantive changes

<scribe> ... new features will be in TTML.next

glenn: agrees that substantive changes probably not required

-Regrets: miked

sean: only concerns are with SMPTE timing and profile changes
... however, consensus is that LC probably not needed
... will continue with May timing

Review of Actions

ACTION-151?

<trackbot> ACTION-151 does not exist

ACTION-48?

<trackbot> ACTION-48 -- Sean Hayes to elaborate issue-151 points -- due 2012-03-08 -- CLOSED

<trackbot> http://www.w3.org/AudioVideo/TT/tracker/actions/48

ACTION-50?

<trackbot> ACTION-50 -- Sean Hayes to create wiki page for ttml and subpage for role registry -- due 2012-03-22 -- CLOSED

<trackbot> http://www.w3.org/AudioVideo/TT/tracker/actions/50

sean: completed action-48 and action-50

ACTION-41?

<trackbot> ACTION-41 -- Sean Hayes to ACTION: Sean to start the Note on how to use TTML with HTML5/CSS [recorded in ]http://www.w3.org/2012/02/09-ttml-minutes.html#action03] -- due 2012-04-01 -- OPEN

<trackbot> http://www.w3.org/AudioVideo/TT/tracker/actions/41

sean: wip, few details to finalize

ACTION-44?

<trackbot> ACTION-44 -- Philippe Le Hégaret to put in place a new errata and ask plh to set up the redirect to it -- due 2012-03-08 -- OPEN

<trackbot> http://www.w3.org/AudioVideo/TT/tracker/actions/44

sean: wip
... coordinating with plh

Review of Issues

ISSUE-165?

<trackbot> ISSUE-165 -- allowing set to animate more than one attribute. -- open

<trackbot> http://www.w3.org/AudioVideo/TT/tracker/issues/165

sean: in trying to simulate pop-on style, would like to simplify by specifying multiple attributes in a single set element
... or could have set reference a style element in order to animate entire style set referenced through style element

glenn: this would be TTML.next

sean: yes

ISSUE-151?

<trackbot> ISSUE-151 -- Clarify syncbase in SMPTE continuous mode -- open

<trackbot> http://www.w3.org/AudioVideo/TT/tracker/issues/151

<Sean> hello?

sean: was smpte mode intended to be marker based for both continuous and discountinuous cases?

glenn: yes, smpte timebase was intended to be marker mode irrespective of value of ttp:markerMode value

sean: if intent was that smpte/continuous is intended to be marker mode, then we need to clarify spec; if not, then we need to remove
... suggests that glenn closely read the current spec text, then writes a CP to address this issue
... will need to deal with the problem that (informative) notes in 6.2.6 (ttp:markerMode) seem to be specifying normative semantics that should be present in normative text

ACTION glenn to review and draft CP for resolving ISSUE-151

<trackbot> Created ACTION-51 - Review and draft CP for resolving ISSUE-151 [on Glenn Adams - due 2012-03-29].

ISSUE-154?

<trackbot> ISSUE-154 -- Clarify the endsync behavior -- open

<trackbot> http://www.w3.org/AudioVideo/TT/tracker/issues/154

sean: simpler than 151, but still may need change to spec
... problem is that we don't specify endsync, which has a default of 'last'
... for most part this works, but may not work in marker mode
... problem is that parent needs to stay alive until children see their end markers
... could fix by changing default for endsync behavior to 'all'
... in fact this default could be applied throughout
... proposes introducing semantics that endsync behavior is 'all', at least for marker mode, but maybe for all modes
... will write CP to this effect

ACTION sean to draft CP for resolving ISSUE-154

<trackbot> Created ACTION-52 - Draft CP for resolving ISSUE-154 [on Sean Hayes - due 2012-03-29].

ISSUE-162?

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

<trackbot> http://www.w3.org/AudioVideo/TT/tracker/issues/162

mike: does profile specify a document profile or a processing profile?

sean: believes it is fairly clear in spec

mike: industry is not clear on this, so perhaps needs more explicit language to this effect

sean: ... perhaps we should (could) add new mechanisms to support specifying document profile, but suggest this be TTML.next action

mike: most important that intent is clear

sean: would be reasonable to add more clarifying text/examples/etc.

ACTION glenn to address or draft CP to resolve ISSUE-156

<trackbot> Created ACTION-53 - Address or draft CP to resolve ISSUE-156 [on Glenn Adams - due 2012-03-29].

sean: any action to create new document profile should be introduced with a new issue
... what happens if profile refers to a feature we don't define?
... when we introduce new feature designators in future, then what is processor behavior for older processors?

glenn: http://dvcs.w3.org/hg/ttml/raw-file/tip/ttml10/spec/ttaf1-dfxp.html#conformance-generic-processor

see item (3)

mike: if no profile is specified, then processor should not reject (for that reason)
... in other words, should be optional

ACTION glenn to clarify behavior regarding processor behavior when encountering feature for which no used or required is indicated

<trackbot> Created ACTION-54 - Clarify behavior regarding processor behavior when encountering feature for which no used or required is indicated [on Glenn Adams - due 2012-03-29].

Adjournment

adjourned

trackbot, end meeting

Summary of Action Items

[End of minutes]

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$Date: 2012/03/22 15:13:17 $

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Found Scribe: glenn
Inferring ScribeNick: glenn
Default Present: sean_, glenn, +49.893.aaaa, +44.147.383.aabb, johnb, andreas, +1.858.882.aacc, miked, sean
Present: sean_ glenn +49.893.aaaa +44.147.383.aabb johnb andreas +1.858.882.aacc miked sean
Regrets: miked
Agenda: http://lists.w3.org/Archives/Public/public-tt/2012Mar/0032.html
Found Date: 22 Mar 2012
Guessing minutes URL: http://www.w3.org/2012/03/22-tt-minutes.html
People with action items: 

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