ISSUE-444: Forbidden timeExpressions

Forbidden timeExpressions

TTML WebVTT mapping note
Raised by:
Pierre-Anthony Lemieux
Opened on:
The following timeExpressions are forbidden:


Why? AFAIK all can be unambiguously converted to HH:MM:SS.fraction. Annex N.2 of TTML1, for instance, specifies the conversion of frame-based expressions to time-based expressions.
Related Actions Items:
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Related emails:
  1. {agenda} TTWG Meeting 2015-09-24 (from on 2015-09-23)
  2. ISSUE-444: Forbidden timeExpressions [TTML WebVTT mapping note] (from on 2015-09-23)

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David Singer <>, Nigel Megitt <>, Chairs, Thierry Michel <>, Philippe Le H├ęgaret <>, Atsushi Shimono <>, Staff Contacts
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