[MEncoder-users] Bad mencoder video with -ss and -endpos

[D Richard Felker III]

On Wed, Jan 12, 2005 at 11:41:46AM +0100, Greger Bergman wrote:
> Hello,
> 
> I am trying to extract a small sample from an avi movie. The video 
> quality of the sample is not good in the beginning. My question is why?
> 
> The movie was encoded from a dvd:
> 
>     mencoder dvd://1 -oac mp3lame -lameopts abr:br=128 -aid 128 \
>       -ovc frameno -o frameno.avi
> 
>     mencoder dvd://1 -oac copy -ovc xvid -xvidencopts pass=1 \
>       -vf crop=704:416:2:80,scale=640:272 -o /dev/null
> 
>     menoder dvd://1 -oac copy -ovc xvid -xvidencopts pass=2:bitrate=867 \
>       -vf crop=704:416:2:80,scale=640:272 -o movie.avi
> 
> The sample:
> 
>     mencoder -oac copy -ovc copy -ss 00:54:05 -endpos 60 \
>       -o sample.avi movie.avi
> 
> 
> If I encode the sample with -nosound the video looks good:
> 
>     mencoder -nosound -ovc copy -ss 00:54:05 -endpos 60 \
>       -o sample.avi movie.avi
> 
> It seems to me that the audio is my problem.
> 
> Any tips on how to solve this problem would be much appreciated.

-mc 0 -noskip

rich