Re: [FFmpeg-user] Duration Issues

2016-07-01 Thread Carl Eugen Hoyos 
Carl Eugen Hoyos  ag.or.at> writes:

> In addition to what Moritz wrote, please note that the input 
> option -t does not always work correctly.

As Moritz had kindly found out and told me, the bug I 
was thinking of is already fixed (but wasn't it 2.8).

Sorry for the noise, Carl Eugen

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Re: [FFmpeg-user] Duration Issues

2016-06-30 Thread Reto Kromer 
Celso Junior wrote:

>ffmpeg version 2.8.6-1ubuntu2 Copyright (c) 2000-2016 the FFmpeg developers
>  built with gcc 5.3.1 (Ubuntu 5.3.1-11ubuntu1) 20160311

Please update to HEAD or version 3.1.1.

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Re: [FFmpeg-user] Duration Issues

2016-06-30 Thread Carl Eugen Hoyos 
Cley Faye  gmail.com> writes:

> ​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.

In addition to what Moritz wrote, please note that the input 
option -t does not always work correctly.

Carl Eugen
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Re: [FFmpeg-user] Duration Issues

2016-06-30 Thread 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 :
> > 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
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Re: [FFmpeg-user] Duration Issues

2016-06-30 Thread Cley Faye 
2016-06-30 17:15 GMT+02:00 Celso Junior :

> ffmpeg -i origin.mxf -ss 00:00:00.000 -t 00:00:01.000  -c copy -map 0 -y
> chunk.mxf
>
>

> I tried setting the fps by hand, using -to instead of -t but nothing
> changes...
>
> Does someone has some idea about it? What am I doing wrong?
>

​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.
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