ISSUE-346: Need ttp:mediaDuration parameter

Need ttp:mediaDuration parameter

State:
CLOSED
Product:
TTML2
Raised by:
Glenn Adams
Opened on:
2014-09-21
Description:
In order to perform ISD processing, it is necessary to know the duration of root external extent. When associate with a related media object, this is the simple duration of the related media object. If this is known at authoring time, then it is an important parameter that should be specified. I propose defining a ttp:mediaDuration parameter attribute that takes either an offset-time form of a time expression or the keyword "indefinite", where the latter is used (or implied) when no related media object exists or its simple duration is unknown or indefinite. If this parameter is not specified, then it would be treated as if indefinite were specified.
Related Actions Items:
No related actions
Related emails:
  1. Re: {minutes} TTWG Meeting 9/10/2014 (from silviapfeiffer1@gmail.com on 2014-10-10)
  2. {minutes} TTWG Meeting 9/10/2014 (from nigel.megitt@bbc.co.uk on 2014-10-09)
  3. {agenda} TTWG Meeting 9/10/2014 (from nigel.megitt@bbc.co.uk on 2014-10-08)
  4. {agenda} TTWG Meeting 2/10/2014 (from nigel.megitt@bbc.co.uk on 2014-10-01)
  5. Re: ISSUE-346: Need ttp:mediaDuration parameter [TTML2] (from John.Birch@screensystems.tv on 2014-09-26)
  6. Re: [TTML2] Document relationship to media timings - re Issue-346, Issue-270, Issue-335 (from nigel.megitt@bbc.co.uk on 2014-09-26)
  7. Re: ISSUE-346: Need ttp:mediaDuration parameter [TTML2] (from nigel.megitt@bbc.co.uk on 2014-09-26)
  8. Re: [TTML2] Document relationship to media timings - re Issue-346, Issue-270, Issue-335 (from glenn@skynav.com on 2014-09-26)
  9. Re: [TTML2] Document relationship to media timings - re Issue-346, Issue-270, Issue-335 (from nigel.megitt@bbc.co.uk on 2014-09-26)
  10. RE: ISSUE-346: Need ttp:mediaDuration parameter [TTML2] (from John.Birch@screensystems.tv on 2014-09-26)
  11. Re: [TTML2] Document relationship to media timings - re Issue-346, Issue-270, Issue-335 (from nigel.megitt@bbc.co.uk on 2014-09-26)
  12. Re: [TTML2] Document relationship to media timings - re Issue-346, Issue-270, Issue-335 (from glenn@skynav.com on 2014-09-26)
  13. [TTML2] Document relationship to media timings - re Issue-346, Issue-270, Issue-335 (from nigel.megitt@bbc.co.uk on 2014-09-26)
  14. Re: ISSUE-346: Need ttp:mediaDuration parameter [TTML2] (from glenn@skynav.com on 2014-09-25)
  15. RE: ISSUE-346: Need ttp:mediaDuration parameter [TTML2] (from John.Birch@screensystems.tv on 2014-09-25)
  16. RE: ISSUE-346: Need ttp:mediaDuration parameter [TTML2] (from John.Birch@screensystems.tv on 2014-09-25)
  17. Re: ISSUE-346: Need ttp:mediaDuration parameter [TTML2] (from glenn@skynav.com on 2014-09-25)
  18. Re: ISSUE-346: Need ttp:mediaDuration parameter [TTML2] (from glenn@skynav.com on 2014-09-25)
  19. Re: ISSUE-346: Need ttp:mediaDuration parameter [TTML2] (from nigel.megitt@bbc.co.uk on 2014-09-25)
  20. RE: ISSUE-346: Need ttp:mediaDuration parameter [TTML2] (from John.Birch@screensystems.tv on 2014-09-25)
  21. Re: ISSUE-346: Need ttp:mediaDuration parameter [TTML2] (from nigel.megitt@bbc.co.uk on 2014-09-25)
  22. RE: ISSUE-346: Need ttp:mediaDuration parameter [TTML2] (from John.Birch@screensystems.tv on 2014-09-25)
  23. {agenda} TTWG Meeting 25/9/2014 (from nigel.megitt@bbc.co.uk on 2014-09-24)
  24. ISSUE-346: Need ttp:mediaDuration parameter [TTML2] (from sysbot+tracker@w3.org on 2014-09-21)

Related notes:

Addressed in https://dvcs.w3.org/hg/ttml/rev/3cbc109b90bd

Glenn Adams, 21 Sep 2014, 12:39:51

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David Singer <singer@apple.com>, Nigel Megitt <nigel.megitt@bbc.co.uk>, Chairs, Thierry Michel <tmichel@w3.org>, Philippe Le H├ęgaret <plh@w3.org>, Staff Contacts
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