ISSUE-201: How to specify aspect ratio to understand positioning that may apply for display or video.

aspectRatio

How to specify aspect ratio to understand positioning that may apply for display or video.

State:
OPEN
Product:
TTML2
Raised by:
Glenn Adams
Opened on:
2013-02-21
Description:
See TTWG Feb 14 Meeting minutes: http://www.w3.org/2013/02/14-tt-minutes.html,text.

How to specify aspect ratio to understand positioning that may apply for display or video.
Related Actions Items:
No related actions
Related emails:
  1. TTML Minutes for 15/11/13 (from nigel.megitt@bbc.co.uk on 2013-11-21)
  2. {minutes} TTML Meeting of 24/10/13 (from glenn@skynav.com on 2013-10-24)
  3. RE: TTML Agenda for 24/10/13 (from mdolan@newtbt.com on 2013-10-23)
  4. TTML Agenda for 24/10/13 (from nigel.megitt@bbc.co.uk on 2013-10-23)
  5. RE: TTWG Meeting Minutes March 7, 2013 (from momartin@microsoft.com on 2013-03-07)
  6. TTWG Meeting Minutes March 7, 2013 (from momartin@microsoft.com on 2013-03-07)
  7. [minutes] 2013-02-28 Timed Text (from plh@w3.org on 2013-03-07)
  8. RE: TTWG Meeting Minutes Feb 28, 2013 (from momartin@microsoft.com on 2013-03-07)
  9. TTWG Agenda March 7, 2013 (from momartin@microsoft.com on 2013-03-07)
  10. TTWG Meeting Minutes Feb 28, 2013 (from momartin@microsoft.com on 2013-03-07)
  11. Re: TTML Agenda for 28/2/13 (from glenn@skynav.com on 2013-02-28)
  12. RE: TTML Agenda for 28/2/13 (from mdolan@newtbt.com on 2013-02-28)
  13. TTML Agenda for 28/2/13 (from momartin@microsoft.com on 2013-02-28)
  14. TTWG Meeting Minutes Feb 28 (from momartin@microsoft.com on 2013-02-28)
  15. RE: ISSUE-201: How to specify aspect ratio to understand positioning that may apply for display or video. [TTML.next] (from momartin@microsoft.com on 2013-02-21)
  16. ISSUE-201: How to specify aspect ratio to understand positioning that may apply for display or video. [TTML.next] (from sysbot+tracker@w3.org on 2013-02-21)

Related notes:

See presentation from Netflix provided Feb 14: http://lists.w3.org/Archives/Public/public-tt/2013Feb/att-0041/TTML_AspectRatioProblem.pdf

Monica Martin, 21 Feb 2013, 14:52:33

See threads Jan-Feb 2012, starting here: http://lists.w3.org/Archives/Public/public-tt/2013Jan/0027.html

Monica Martin, 21 Feb 2013, 14:53:33

Proposed text:

If <code>ttp:aspectRatio</code> is "true", the root container SHALL be mapped to a rectangular area within the related video object such that:</p>

- the aspect ratio of the rectangular area is equal to <code>ttp:aspectRatio</code>
- the center of the rectangular area is colocated with the center of the related video object frame,
- the rectangular area is entirely contained within the related video object frame and
- the rectangular area has a height or width equal to that of the related video object frame.

Pierre-Anthony Lemieux, 27 Sep 2013, 21:30:32

Raised by David Ronca

Philippe Le Hégaret, 24 Oct 2013, 15:28:01

Nigel: P1

Philippe Le Hégaret, 24 Oct 2013, 15:28:13

Tweaked proposed text:

If <code>ttp:aspectRatio</code> is present, the root container SHALL be mapped to a rectangular area within the related video object such that:</p>

- the aspect ratio of the rectangular area is equal to <code>ttp:aspectRatio</code>
- the center of the rectangular area is colocated with the center of the related video object frame,
- the rectangular area is entirely contained within the related video object frame and
- the rectangular area has a height or width equal to that of the related video object frame.

Pierre-Anthony Lemieux, 31 Oct 2013, 14:36:32

[nigel]: Glenn to investigate SVG viewbox etc and see if something can be brought in from that space.

15 Nov 2013, 09:23:29

Reassigning from pal to glenn.

Nigel Megitt, 15 Nov 2013, 09:24:04

Changelog:

Created issue 'How to specify aspect ratio to understand positioning that may apply for display or video.' nickname owned by David Ronca on product TTML.next, description 'See TTWG Feb 14 Meeting minutes: http://www.w3.org/2013/02/14-tt-minutes.html,text.

How to specify aspect ratio to understand positioning that may apply for display or video.' non-public

Monica Martin, 21 Feb 2013, 14:50:52

Status changed to 'open'

Monica Martin, 28 Feb 2013, 07:04:48

nickname changed to 'aspectRatio'

Pierre-Anthony Lemieux, 27 Sep 2013, 21:30:32

Owner changed to 'Pierre-Anthony Lemieux'

Philippe Le Hégaret, 24 Oct 2013, 15:28:12

Owner changed to 'Glenn Adams'

Nigel Megitt, 15 Nov 2013, 09:24:04


David Singer <singer@apple.com>, Nigel Megitt <nigel.megitt@bbc.co.uk>, Chairs, Thierry Michel <tmichel@w3.org>, Philippe Le Hégaret <plh@w3.org>, Staff Contacts
Tracker: documentation, (configuration for this group), originally developed by Dean Jackson, is developed and maintained by the Systems Team <w3t-sys@w3.org>.
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