[FFmpeg-user] Audio out of sync after video concatenation

[Nicolas George]

iburman at compuscience.com (12021-06-22):
> Video 2 -  4 seconds without audio (I generated this video using xfade
> transition

Only use the concat demuxer with original compressed streams. If you
need to concatenate the result of other processing, do not encode them
and use the concat filter.

Regards,

-- 
  Nicolas George
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