Fwd: [WebVTT] Karaoke and other animations

FYI
Comment received for WebVTT review (see following)

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From: Henrik Andersson <henke@henke37.cjb.net>
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Date: Fri, 8 Sep 2017 16:59:55 +0200
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Subject: [WebVTT] Karaoke and other animations
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I read the spec [1] and while I find it generally well thought out and
covering a lot of use cases, it however fails to cover some of the more
advanced use cases seen in action in some less-than-official subtitles.
For example as seen in ASS subtitles [2]

I am talking about animation for the subtitles. Two main types of
animation to be specific.

The first is subtitles that try to follow movement in the video. From an
implementer standpoint it means freeform animation of the cue as
displayed with timing information relative to the cue. The css keyframes
system may be relevant here.

The second is subtitles that display karaoke. That is, visual aid to the
viewer for which syllable has, is and will be audible next. This is
traditionally used to allow singalong for songs.

Best regards from someone who likes subtitles.

[1] https://w3c.github.io/webvtt/
[2] http://docs.aegisub.org/3.2/ASS_Tags/

Received on Friday, 8 September 2017 15:28:13 UTC