[FFmpeg-devel] Length requirements documentation for concat

[Nicolas George]

Observator Casualis (2018-01-04):
> I tried to concatenate two .mp4 videos (both H264 1920x1080 25fps + AAC
> stereo 48000Hz) by concat protocol and concat demuxer. The second video
> was very short (less than a second).
> The result was that the concatenated video did not show the short video.
> 
> After some tries I found out, that in order for this to work, the short
> video has to be at least about 2 seconds long.

The concat protocol cannot work with MP4 format.

I do not know of a time limitation for the concat demuxer, it should not
have any. The problem probably lies elsewhere.

Regards,

-- 
  Nicolas George
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