ISSUE-324 (Prefer end to dur on generated out-of-line regions): Prefer end to dur on generated out-of-line regions [TTML2]

• From: Timed Text Working Group Issue Tracker <sysbot+tracker@w3.org>
• Date: Wed, 09 Jul 2014 14:59:55 +0000
• To: public-tt@w3.org
• Message-Id: <E1X4tLf-0004hA-1f@stuart.w3.org>

ISSUE-324 (Prefer end to dur on generated out-of-line regions): Prefer end to dur on generated out-of-line regions [TTML2]

http://www.w3.org/AudioVideo/TT/tracker/issues/324

Raised by: Nigel Megitt
On product: TTML2

The new process [generate out-of-line regions] in §9.3.2 always adds a dur attribute to the created region element R' even when dur attributes are not permitted. This situation is explicitly described in §10.2.3 for the case when a document instance specifies the use of the smpte time base and discontinuous marker mode.

I think (needs checking) that this could be resolved by specifying a computed end attribute in the root temporal extent in place of dur. If not, I guess we need to add more logic to carry across the appropriate combination of begin, dur and end for the content depending on the other factors in the document.

Received on Wednesday, 9 July 2014 14:59:56 UTC