[MEncoder-users] Spit files -ss

[Mike Petersen]

Hi,
i like to split files at a given position. So I use :

mencoder -ovc copy -oac copy -idx -audio-preload 0.0 -mc 0 -hr-edl-seek 
-ss 20 -endpos 420 -o out.wmv video.wmv

But the position is off. This is also mentioned in several over posts, 
but nothing I found helped. The -hr-edl-seek has written in the docs : 
"NOTE: Not guaranteed to work right with '−ovc copy'."

So my question is there a way to split the movie at an exact position 
(for an exact length) by using -ovc copy ?

Thanks
Mike