ISSUE-187: R0006 is overly constraining as drafted

R0006 is overly constraining as drafted

State:
CLOSED
Product:
TTML Simple Delivery Profile for Closed Captions (US)
Raised by:
Glenn Adams
Opened on:
2012-09-25
Description:
R0006 says "A document must have all elements are in order of time. That is, in a par context, an element must not lexically precede another element with an earlier start time."

Clearly this is wrong, as there are elements that are not timed that may precede a timed element. For example, a <tt:meta/> or a <tt:set/> may lexically precede another element.

One solution is to substitute "timed element" for "element" in R0006, with a note that defines a "timed element".
Related Actions Items:
Related emails:
  1. TTML Agenda for 11/10/12 (from Sean.Hayes@microsoft.com on 2012-10-11)
  2. RE: ISSUE-187: R0006 is overly constraining as drafted [Simple Delivery Profile for Closed Captions] (from momartin@microsoft.com on 2012-10-02)
  3. ISSUE-187: R0006 is overly constraining as drafted [Simple Delivery Profile for Closed Captions] (from sysbot+tracker@w3.org on 2012-09-25)

Related notes:

TTWG Oct 4: http://www.w3.org/2012/10/04-tt-minutes.html
Related to Action-112: https://www.w3.org/AudioVideo/TT/tracker/actions/112

Monica Martin, 4 Oct 2012, 17:46:06

http://dvcs.w3.org/hg/ttml/rev/d8626d96fee3

Glenn Adams, 18 Oct 2012, 07:15:49

Changelog:

Created issue 'R0006 is overly constraining as drafted' nickname owned by Glenn Adams on product Simple Delivery Profile for Closed Captions, description 'R0006 says "A document must have all elements are in order of time. That is, in a par context, an element must not lexically precede another element with an earlier start time."

Clearly this is wrong, as there are elements that are not timed that may precede a timed element. For example, a <tt:meta/> or a <tt:set/> may lexically precede another element.

One solution is to substitute "timed element" for "element" in R0006, with a note that defines a "timed element".' non-public

Glenn Adams, 25 Sep 2012, 02:13:56

Status changed to 'closed'

4 Oct 2012, 14:32:06


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
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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