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

tts:dynamicFlow - need to clarify what timeline is used by flow timers in B.5

State:
CLOSED
Product:
TTML 1.0
Raised by:
Glenn Adams
Opened on:
2009-04-23
Description:
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;
Related Actions Items:
No related actions
Related emails:
  1. ISSUE-64: tts:dynamicFlow - need to clarify what timeline is used by flow timers in B.5 [DFXP 1.0] (from sysbot+tracker@w3.org on 2009-04-23)

Related notes:

resolved in TTAF1-DFXP WD Editor's Copy Update - 20090427

Glenn Adams, 27 Apr 2009, 04:03:24

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