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ISSUE-64: tts:dynamicFlow - need to clarify what timeline is used by flow timers in B.5 [DFXP 1.0]

From: Timed Text Working Group Issue Tracker <sysbot+tracker@w3.org>
Date: Thu, 23 Apr 2009 05:10:49 +0000 (GMT)
To: public-tt@w3.org
Message-Id: <20090423051049.E9E57BF50@nelson.w3.org>

ISSUE-64: tts:dynamicFlow - need to clarify what timeline is used by flow timers in B.5 [DFXP 1.0]

http://www.w3.org/AudioVideo/TT/tracker/issues/64

Raised by: Glenn Adams
On product: DFXP 1.0

I see that the current spec does not indicate what timeline to use for
the purpose of interpreting time expressions in <flowIntervalFunction>,
namely, a <duration> argument to intra() or inter() flow interval functions;
it would seem appropriate that this should be defined to be the same
timeline as used for DFXP content, namely, as determined by ttp:timeBase; in
the case of SMPTE discontinuous (marker) mode, it probably should be real
time, since duration is not well defined on the discontinuous SMPTE
timeline; i will add normative text that calls out these timeline semantics;
Received on Thursday, 23 April 2009 05:10:58 GMT

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