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w3c / ttml-webvtt-mapping

TTML to WebVTT mapping
https://w3c.github.io/ttml-webvtt-mapping/
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Add support for ittp:aspectRatio #8

Open plehegar opened 8 years ago

plehegar commented 8 years ago

The addition of ittp:aspectRatio [1] to IMSC1 was specifically requested to support display of the same caption over multiple aspect ratio versions of the same content.

Can't this be supported in WebVTT?

[1] https://dvcs.w3.org/hg/ttml/raw-file/tip/ttml-ww-profiles/ttml-ww-profiles.html#ttp-aspectRatio

(raised by Pierre-Anthony Lemieux on 2015-09-23) From tracker issue http://www.w3.org/AudioVideo/TT/tracker/issues/440

andreastai commented 8 years ago

The mapping take only the existing TTML 1 and the WebVTT snapshot as a base. I do not know any way to specify this information in WebVTT.

If the TTWG finds room for improvement in WebVTT because of the mapping activity the best way to raise it would be on the Text Track list.

Andreas Tai, 27 Oct 2015 From tracker issue http://www.w3.org/AudioVideo/TT/tracker/issues/440