[FFmpeg-user] Duration Issues

[Moritz Barsnick]

On Thu, Jun 30, 2016 at 18:17:14 +0200, Cley Faye wrote:
> 2016-06-30 17:15 GMT+02:00 Celso Junior <celsojr2013 at gmail.com>:
> > ffmpeg -i origin.mxf -ss 00:00:00.000 -t 00:00:01.000  -c copy -map 0 -y
> > chunk.mxf

> I'm not sure how it would produce the result you're seeing, but for
> information input option (I assume -ss and -t refers to the input here)
> must be placed before the corresponding -i.

That is not true, as both "-ss" and "-t" can be used as output options:
https://trac.ffmpeg.org/wiki/Seeking
It depends on what you're trying to achieve.

I believe the actual issue is that copying the stream imposes
restrictions on how it can be cut. See the section "Seeking while doing
a codec copy":
https://trac.ffmpeg.org/wiki/Seeking#Seekingwhiledoingacodeccopy

Moritz