W3C

- DRAFT -

Timed Text Working Group Teleconference

15 Nov 2012

See also: IRC log

Attendees

Present
glenn, mmartin3, +1.408.771.aaaa, +1.858.847.aabb, +1.425.658.aacc, +1.650.525.aadd, mike_dolan, Sean, mijordan, +41.22.717.aaee, aadd, Frans
Regrets
Chair
SV_MEETING_CHAIR
Scribe
mmartin3

Contents


<trackbot> Date: 15 November 2012

Thanks Glenn.

Philippe, Can you stay on IRC?

<plh> yes

good thanks

<Frans> Frnas

Chair

Sean

scribe

mmartin3

TTML Agenda Nov 15, 2012

SDP-US Issues

mdolan: Add to agenda: IANA response.

Dec 15 deadline

Action Sean Draft response to bring back to the group.

<trackbot> Created ACTION-129 - Draft response to bring back to the group. [on Sean Hayes - due 2012-11-22].

Issue-182?

<trackbot> ISSUE-182 -- Allow more than one profile to be used in the SDP-US. Add use of ttp:profile element. -- open

<trackbot> http://www.w3.org/AudioVideo/TT/tracker/issues/182

SDP-US draft: http://dvcs.w3.org/hg/ttml/raw-file/tip/ttml10-sdp-us/Overview.html

mmartin3: R0007 need namespace
... answered Glenn: http://lists.w3.org/Archives/Public/public-tt/2012Nov/0022.html.

c/answered

glenn: Agree with the proposal.

Resolved to include preamble text.

Issue-189?

<trackbot> ISSUE-189 -- do regions scroll their flowed content? -- open

<trackbot> http://www.w3.org/AudioVideo/TT/tracker/issues/189

mmartin3: http://lists.w3.org/Archives/Public/public-tt/2012Oct/0017.html

http://lists.w3.org/Archives/Public/public-tt/2012Oct/0021.html

Second Edition

mmartin: Need to add example in Second Edition. Then put reference text in SDP-US.

dolan: Open question existed on my example.

sean: Only 2 lines visible in my previous example. Describes region, flow, and text behavior.
... Two ways to construct - have 2 lines and overflow and display line after. Or display the lines appropriately with timing.

dolan: Mine was different.

sean: If have lines overflow. Ones at the bottom are seen. Ones at the top are moved out.
... Use example as is except to remove displayAlign.

glenn: May still need it.

Dolan: http://lists.w3.org/Archives/Public/public-tt/2012Oct/0017.html

Glenn: http://lists.w3.org/Archives/Public/public-tt/2012Oct/0021.html

sean: May be able to handle without displayAlign.

dolan: TTML + representation of display that occurs.

sean: Send out example as complete TTML file as Mike provided and send screen shots.

Resolved to include example in TTML 1.0 SE,.

Action Sean Provide example with screen shot to the list for Issue-182 for TTML 1.0 SE portion.

<trackbot> Created ACTION-130 - Provide example with screen shot to the list for Issue-182 for TTML 1.0 SE portion. [on Sean Hayes - due 2012-11-22].

mmartin3: Need text to reference TTML 1.0 SE for scrolling in SDP-US.
...Text: See example on scrolling described in TTML 1.0 Second Edition.

sean: Reference this at point of R0047.

No objections.

Issue-188?

<trackbot> ISSUE-188 -- Bounding SDP-US rendering complexity -- open

<trackbot> http://www.w3.org/AudioVideo/TT/tracker/issues/188

mmartin3: Explanatory text in Future Needs.

http://lists.w3.org/Archives/Public/public-tt/2012Nov/0018.html

mmartin3: Glenn asked about rendering model.

sean: Authoring constraint model that impacts rendering.

<Frans> Have to leave, sorry :(

sean: Answer your questions Glenn.

glenn: Value of note?
... What is intended given what exists today in TTML 1.0?

sean: DECE has such a model with heuristics. Sean describes the discussion.
... Compute model for the rendering

glenn: Have some constraints more than SDP-US now?

sean: Example is the delta area if you move a region.

glenn: Constraints on authoring for graphics performance.
... Capture intent without being ambiguous.

dolan: Is this text helpful.

glenn: Documenting that we are thinking about it may be helpful.

sean: If word sufficiently, this would make use of TTML in SDP easier.

glenn: Working Group Note?

sean: Yes.
... Roll-up to TTML 1.1 potentially.

glenn: If we do intend to revise this, do we want a Note?
... Go through membership.

sean: Done with technical area.

glenn: Won't have membership endorsement or revise the draft.

sean: Make statement to chairs group.
... similar to our FPWD.
... go through review in TTML 1.1.

mmartin3: Shown in updated charter.

Ressolved to Glenn do text for Issue-188.

Issue-190?

<trackbot> ISSUE-190 -- Background vs Window Color -- closed

<trackbot> http://www.w3.org/AudioVideo/TT/tracker/issues/190

mmartin3: To be included.
... Example only.
... Will make sure preamble is provided.

Issue-194?

<trackbot> ISSUE-194 -- root container needs better definition -- open

<trackbot> http://www.w3.org/AudioVideo/TT/tracker/issues/194

mmartin3: "The root container origin shall be the upper left corner of the related video coding; and the extent shall be the lower right corner."
... Need to add definition.
... Normative text.

dolan: Need to have a specific definition.

glenn: R0021 and R0022.

R0021 - A presentation processor must fix the root container origin so that it corresponds with the top, left corner of the related media object [TTML10SE], Section 2.2. R0022 - A presentation processor must fix the root container extent so that it corresponds with the extent of the related media object [TTML10SE], Section 2.2.

mmartin3: Text in SDP-US draft.

Second Edition text: Related Media Object A (possibly null) media object associated with or otherwise related to a TTML document instance. For example, an aggregate audio/video media object for which a TTML document instance provides caption or subtitle information, and with which that TTML document instance is associated.

dolan: What about registering with the video?

glenn: Why we have definition in SE.
... Make suggested change.

sean: Preamble that says the object is the video.

glenn: Add note after 2 requirements.

dolan: Only with video.

glenn: Rules out to non-video related media.

Resolved to add note on R0021 and R0022.

sean: In this case, the related media object is the original video.
... Use this text.

mmartin3: Issues all resolved.

<scribe> ...New issue from Pierre, Issue-196.

Issue-196?

<trackbot> ISSUE-196 -- Constraining encoding to UTF-8 -- raised

<trackbot> http://www.w3.org/AudioVideo/TT/tracker/issues/196

pal: Add constraint on encoding to UTF-8.

glenn: Need to say it is XML first.

sean: Syntax issues.
... Part of TTML 1.1.

glenn: 2 new requirements - mandate XML and character encoding of UTF-8.

mmartin3: XML 1.0.

Action Glenn Add 2 new requirements - mandate XML and character encoding of UTF-8.

<trackbot> Created ACTION-131 - Add 2 new requirements - mandate XML and character encoding of UTF-8. [on Glenn Adams - due 2012-11-22].

Resolved to add 2 new requirements for XML 1.0 and UTF-8.

Action-131 will resolve Issue-196.

<glenn> ISSUE-196?

<trackbot> ISSUE-196 -- Constraining encoding to UTF-8 -- raised

<trackbot> http://www.w3.org/AudioVideo/TT/tracker/issues/196

mmartin3: Sense of the document.
... to proceed.

<glenn> ACTION-131: see ISSUE-196

<trackbot> ACTION-131 Add 2 new requirements - mandate XML and character encoding of UTF-8. notes added

plh are you herer?

c/here

glenn: Raised 2 questions on Section 2 and 12 for some rewrites.
... Need to inversion of some requirements to make sure we have consistency across the document.

sean: Clean up document and issue Last Call with 2 weeks to publish as a Note Nov 29.

glenn: LCWD text

,...Go through pubs to do so.

Meetings

sean: No meeting Nov 22.
... Final publication Nov 29.

trackbot, list attendees

<trackbot> Sorry, mmartin3, I don't understand 'trackbot, list attendees'. Please refer to http://www.w3.org/2005/06/tracker/irc for help.

<glenn> trackbot, end meeting

Summary of Action Items

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Default Present: glenn, mmartin3, +1.408.771.aaaa, +1.858.847.aabb, +1.425.658.aacc, +1.650.525.aadd, mike_dolan, Sean, mijordan, +41.22.717.aaee, aadd, Frans
Present: glenn mmartin3 +1.408.771.aaaa +1.858.847.aabb +1.425.658.aacc +1.650.525.aadd mike_dolan Sean mijordan +41.22.717.aaee aadd Frans

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Found Date: 15 Nov 2012
Guessing minutes URL: http://www.w3.org/2012/11/15-tt-minutes.html
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