[FFmpeg-devel] [PATCH] lavf/mux: do not fail in case of non monotonically increasing DTS values for data packets

Nicolas George george at nsup.org
Thu Feb 25 13:22:26 CET 2016


Le septidi 7 ventôse, an CCXXIV, Stefano Sabatini a écrit :
> As for subtitles, I'm not sure we should accept that as well, but at
> least in theory I can imagine an use case with multiple packets (and
> thus frames) conveying text information pertaining to the same time
> and stream.

Simultaneous subtitles happens in practice quite frequently with ASS: people
talking at the same time, background dialog, translation of visible signs
and other texts, karaoke and translation of songs, credits, etc.

The strict monotonicity test was initially bypassed by merging the ASS
dialog events together, but this was an ugly hack and Clément is trying to
finally get rid of its last traces.

Regards,

-- 
  Nicolas George
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