ACTION-205: Forward this solution to relevant implementers for their input

Forward this solution to relevant implementers for their input

Michael Jordan
Due on:
September 26, 2013
Created on:
September 19, 2013
Associated Issue:
extent and origin on blocks
Related emails:
  1. TTML Minutes for 15/11/13 (from on 2013-11-21)
  2. {minutes} Halloween TTML Meeting and Thank You Sean (from on 2013-10-31)
  3. RE: TTML Agenda for 31/10/13 (from on 2013-10-31)
  4. TTML Agenda for 31/10/13 (from on 2013-10-30)
  5. {minutes} TTML Meeting of 24/10/13 (from on 2013-10-24)
  6. RE: TTML Agenda for 24/10/13 (from on 2013-10-23)
  7. TTML Agenda for 24/10/13 (from on 2013-10-23)

Related notes:

Adobe has implemented. Glenn's proposal is different from CP2.

Action is now for Adobe and CPC to review Glenn's proposal and respond accordingly in time for TPAC session.

Nigel Megitt, 31 Oct 2013, 15:04:10

I sent an email to Jason Livingston at CPC requesting comment on Glenn's change proposal.

One difference I notice in the CPC output from the examples outlined in is that each p with tts:origin and tts:extent from CPC has an explicitly defined target region attribute, which makes it easier to understand the target region for positioning.

<tt xml:lang="en" xmlns="" xmlns:tts="" xmlns:ttm="" xmlns:ttp="" ttp:timeBase="media" ttp:frameRate="24" ttp:frameRateMultiplier="1000 1001">
<style xml:id="basic" tts:color="white" tts:backgroundColor="black" tts:fontFamily="monospace" tts:fontSize="80%" tts:fontWeight="normal" tts:fontStyle="normal"/>
<region xml:id="pop1" tts:backgroundColor="transparent" tts:showBackground="whenActive"/>
<p begin="nn:nn:nn:nn" end="nn:nn:nn:nn"
tts:origin="10% 84.67%" tts:extent="50% 5.33%">
The quick brown fox

I'm not sure that this makes a difference with Glenn's concerns regarding the potential for confusion over the meaning of the properties and how they should be applied.

Michael Jordan, 1 Nov 2013, 20:11:13

Resolved at TPAC, so that the existing implementations continue to work, the syntax used in existing implementations and described in will be accepted as a shorthand for defining inline regions on a contact block as described in This should be clarified with completion of

Michael Jordan, 15 Nov 2013, 02:16:31

Display change log.

David Singer <>, Nigel Megitt <>, Chairs, Thierry Michel <>, Philippe Le H├ęgaret <>, Staff Contacts
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