<trackbot> Date: 25 October 2012

<pal> (pal is not aadd)

Chair

Sean Hayes

Regrets

plh

Topic

SDP-US Issues

Topic

SMPTE Conference

mike: FCC discussed government's role on captioning. Discussed technology.

CEA, SMPTE, DECE and W3C

sean: Brought up live streaming industry requirements. Deadlines for March 2012.

Issues

Issue-191?

<trackbot> ISSUE-191 -- Textoutline doesn't handle specific edge types outlined in R0037. Need to revise requirement and specify in Future Needs sections. -- open

<trackbot> http://www.w3.org/AudioVideo/TT/tracker/issues/191

<scribe> New proposal: http://lists.w3.org/Archives/Public/public-tt/2012Oct/0044.html

UNKNOWN_SPEAKER: Explains updated proposal.

sean: Presentation processor should offer the ability to the user.

mijordan: Agree.

Resolved updated proposal.

Action Glenn Implement updated proposal for Issue-191 as shown in TTWG Oct 25.

<trackbot> Created ACTION-121 - Implement updated proposal for Issue-191 as shown in TTWG Oct 25. [on Glenn Adams - due 2012-11-01].

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

mmartin3: Proposal in issue.

Issue 182 Add ttp:profile element.

Updated proposal: http://lists.w3.org/Archives/Public/public-tt/2012Oct/0043.html

Original to add to new: http://lists.w3.org/Archives/Public/public-tt/2012Oct/0029.html

sean: Shows whole set explicitly.

Resolved to accept original proposal + add additional text in updated proposal.

mike: Decoder focused?

sean: SDP-US can use the profile mechanism as defined in TTML 1.0.

mike: My questions are answered.

Action Glenn Implement agreed original + additional proposal for Issue-182.

<trackbot> Created ACTION-122 - Implement agreed original + additional proposal for Issue-182. [on Glenn Adams - due 2012-11-01].

Issue-188?

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

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

sean: Explains issue.
... rendering model - Document constraints to work properly in reference decoder.
... Augment to apply to document and feed input to DECE.

mike: Defer to DECE input.

?

sean: No concrete proposal yet.

pal: Complex issue being worked on by experts.

sean: Defer to next week.

pal: Having ability to set constraints on the renderng rate and limit complexity.

Issue-192?

<trackbot> ISSUE-192 -- R0041 doesn't allow for EBT-TT conversion easily. Revise R0041 to a SHOULD. -- open

<trackbot> http://www.w3.org/AudioVideo/TT/tracker/issues/192

Issue 192 Do we need to limit chars per line to target particular devices to adhere to FCC requirements for screen windows?

Updated proposal: http://lists.w3.org/Archives/Public/public-tt/2012Oct/0045.html

mmartin3: Explains the proposal.

mike: Should be 32?

Andreas: No handle teletext for Europe.

mike: Core TTML has default settings 32 by 15 initial cell grid.
... Redefine cell grid?

sean: Cell grid doesn't actually control.
... Can change font size independent of cell grid.
... Not hard and fast limit.
... Not like CEA-608.

mike: Add note on redefine cell resolution.

sean: Adjust font size and/or cell resolution.
... Shall not exceed.

mike: What about other aspect ratios?

sean: Note that we don't constrain other aspect ratios.

mike: 21:9 becoming more common.
... intentionally silent.

Resolved use existing proposal. Change to SHALL not exceed on 2 total character requirements. Add note: Adjust font size and cell resolution. Add note: Doesn't constrain other aspect ratios. Accommodate existing captioning and don't explicitly constrain/are silent on other aspect ratios.

mike: Define root container.

Defers to application.

scribe: Set to companion video width and height.
... Accommodate safe area?

sean: Safe area - same aspect ratio of video?

mike: Percentage.

sean: TTML definitions.

mike: Allow px metrics? Region extent?

sean: Only percentage.
... Look at separately 2.2 Terminology TTML 1.0.
... Gives definition.

mike: Where is origin?
... Limit char in case you have a specific aspect ratio.

mmartin3: Use Issue-180.
... handle questions.

Resolved as specified above.

sean: Mike open separate issue.

Andreas: Use more than 32 char have to adjust cell resolution.

Resolved use existing proposal. Change to SHALL not exceed on 2 total character requirements. Add note: Adjust font size. Add note: Doesn't constrain other aspect ratios. Accommodate existing captioning and don't explicitly constrain/are silent on other aspect ratios.

mike: What about 32 to 38?
... set font size.

sean: R0025 revision.

Resolved use existing proposal. Change to SHALL not exceed on 2 total character requirements. Add note: Adjust font size. Add note: Doesn't constrain other aspect ratios. Accommodate existing captioning and don't explicitly constrain/are silent on other aspect ratios. Add revisions to R0025 to accommodate 32 to 38 characters, use 85%.

mike: Error to 84%. Specify where 84% is derived from.

Resolved use existing proposal. Change to SHALL not exceed on 2 total character requirements. Add note: Adjust font size. Add note: Doesn't constrain other aspect ratios. Accommodate existing captioning and don't explicitly constrain/are silent on other aspect ratios. Add revisions to R0025 to accommodate 32 to 38 characters, use 84%. Add note: Explain where 84% was derived from.

Action Monica Create updated proposa for Issue-192.

<trackbot> Created ACTION-123 - Create updated proposa for Issue-192. [on Monica Martin - due 2012-11-01].

Issue-183?

<trackbot> ISSUE-183 -- semantics of using profile in a document -- open

<trackbot> http://www.w3.org/AudioVideo/TT/tracker/issues/183

mike: Updated proposal.

c/mike/mmartin3

Leave open and ask Glenn. Sort out the issue and questions.

Action Sean Sort out the resolution and questions to Issue-183.

<trackbot> Created ACTION-124 - Sort out the resolution and questions to Issue-183. [on Sean Hayes - due 2012-11-01].

Issue-189?

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

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

mmartin3: SDP-US Example 5 update.

sean: Have updated example.
... TTML 1.0 SE or SDP-US?
... Preference is the former.

mike: SDP-US refers to TTML 1.0 SE.
... Remove example 5 in SDP-US. Reference to TTML 1.0 SE, add note in SDP-US.

Resolved .Remove example 5 in SDP-US. Reference to TTML 1.0 SE, add note in SDP-US. Issue-189 as it relates to SDP-US.

Issue-173?

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

<trackbot> http://www.w3.org/AudioVideo/TT/tracker/issues/173

mike: TTML 1.0 need clarification.
... Don't understand expectations.
... No semantics for what they do.
... Impact to colors?
... Defer.
... 1.1 issue.

sean: Related to syntax. White space.
... Include Glenn.

Issue-180?

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

<trackbot> http://www.w3.org/AudioVideo/TT/tracker/issues/180

mike: Resolved in SDP-US. Need to discuss for TTML 1.0.

Issue-180 SDP-US Action http://lists.w3.org/Archives/Public/public-tt/2012Oct/0033.html

Review SDP-US issues next week.

trackbot, end meeting

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Found Date: 25 Oct 2012
Guessing minutes URL: http://www.w3.org/2012/10/25-tt-minutes.html
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