<trackbot> Date: 31 May 2012

<scribe> Scribe: glenn

ISSUE-154

ISSUE-154?

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

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

sean: with default endsync of last, then parent will finish immediately if no child is activated

resolved: change default for endsync to all, to go into 2nd edition

glenn: wonders if this is a substantial change and will be an issue or not

sean: thinks current text is broken, and this is reasonable change

ISSUE-151

ISSUE-151?

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

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

glenn: under 10.4, need to break out smpte/continuous to separate bullet

andreas: wanted clarification (if needed) that in smpte/continuous,
... a child's begin (in par context), if expressed as time code, should it be with respect to parent or as marker matching?
... regarding time offset expressions, don't think they are currently admitted even for smpte/continuous mode

glenn: don't believe that was the intention, so need to double check this

sean: agrees

mike: spec needs to make clear that smpte time base (whether continuous/discontinuous) needs an external time base
... so may need to add note/text making it clear
... also possibly needs language making definition of epoch clear

sean: for 2nd Ed, thinks we should retain distinction continuous/discontinuous, but may be able to remove in 1.1 if we agree to do so

glenn: needs to review text to verify whether time offsets are permitted in smpte/continuous, and if not clear, then should add clarifying text

mike: there was an issue about default value of markerMode...
... concern is that if an implementation is constrained to support discontinuous only, then content will need to be explicit

sean: perhaps we should mandate explicit setting of markerMode in case timeBase is smpte

andreas: problems came from confusion of readers

mike: forces EBU to use attribute in authoring, but doesn't really want to specify

andreas: wants smpte time base to work without having to specify marker mode, since discontinuous seems to be common assumption as default

sean: would be happy to accept change

glenn: if we change endsync default, then we could change this as well

sean: plh will need to make decision
... thinks both changes (to endsync and markerMode defaults) is correcting errors in spec

mike: perhaps we should reach out to users/authors to gauge response
... cpc, bbc, ...
... iplayer group at bbc is using

sean: will attempt to reach out to community

mike: will give us more clear indication

ACTION sean to reach out to community to gauge response to a possible change in default behavior for endsync and markerMode

<trackbot> Created ACTION-67 - Reach out to community to gauge response to a possible change in default behavior for endsync and markerMode [on Sean Hayes - due 2012-06-07].

sean: expect to make these changes (to default of endsync and markerMode) if there are no objections

CP 001 - add animation to region, multiple elements for single set, can reference style block, allow target for another element

http://www.w3.org/wiki/TTML/changeProposal001

resolved: to accept CP 001

CP 002 - Adding origin/extent to block level elements

http://www.w3.org/wiki/TTML/changeProposal002

sean: implementations have supported this on incorrect reading of text
... would need to be done in 1.1
... improves locality of reference, since reduces need to pre-declare regions

glenn: has thought about this, and believes a simple mechanism could be defined based on anonymous regions

sean: take a look at current CP and update/add

mike: wonders about how to apply changes to anonymous region properties, should assist with 708 mapping

glenn: should be able to animate (via set) the anonymous region properties by referring to block element itself

sean: group should review CP 002

Review Open Actions

ACTION-62?

<trackbot> ACTION-62 -- Glenn Adams to search TT member archives for reference to video showing smooth scrolling -- due 2012-04-19 -- OPEN

<trackbot> http://www.w3.org/AudioVideo/TT/tracker/actions/62

mike: who/why was this requested?

sean: sees that plh has already found the correct reference

http://lists.w3.org/Archives/Public/public-tt/2008Dec/0155.html

mike: thinks adding an animation to do smooth scroll would not be a good technical solution

sean: could put in note indicating that reflow should attempt to move content in a smooth fashion

mike: could consider referring to paragraph/text in 608 that would help define semantics

ACTION mike to provide reference to 608/708 that defines/clarifies semantics of smooth flowing/scrolling

<trackbot> Sorry, couldn't find user - mike

ACTION sean to work with mike to provide reference to 608/708 that defines/clarifies semantics of smooth flowing/scrolling

<trackbot> Created ACTION-68 - Work with mike to provide reference to 608/708 that defines/clarifies semantics of smooth flowing/scrolling [on Sean Hayes - due 2012-06-07].

Adjournment

sean: adjourned

trackbot, end meeting

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Guessing input format: RRSAgent_Text_Format (score 1.00)

Found Scribe: glenn
Inferring ScribeNick: glenn
Default Present: glenn, +44.154.558.aaaa, +49.893.aabb, sean, andreas, mike, Andrew_Kirkpatrick, +1.617.300.aacc
Present: glenn +44.154.558.aaaa +49.893.aabb sean andreas mike Andrew_Kirkpatrick +1.617.300.aacc
Agenda: http://lists.w3.org/Archives/Public/public-tt/2012May/0030.html
Found Date: 31 May 2012
Guessing minutes URL: http://www.w3.org/2012/05/31-tt-minutes.html
People with action items: