[MPlayer-users] Segfault in mencoder when using -vop scale..

Nico nsabbi at libero.it
Fri Sep 12 12:47:32 CEST 2003

-vop uses the filters in the opposite of insertion, so you should use

-vop scale=720:304,crop=720:432:0:72

which also keeps the right A/R

Jim Hatfield wrote:

>[Automatic answer: RTFM (read DOCS, FAQ), also read DOCS/bugreports.html]
>After reading all the mencoder docs I can find, I'm having
>a go at converting a DVD to DivX using the three-pass 
>encoding referred to in encoding-tips.html.
>mplayer -vop cropdetect suggests "crop=720:432:0:72". If I
>use that with no scaling then I get a successful encode
>but the aspect ratio is wrong since it's a 16:9 DVD.
>If I add "scale=720:304" then mencoder prints:
>crop: bad position/width/height - cropped area is out of the original!
>then it segfaults.
>Platform is FreeBSD 4.8 using mplayer, which is
>the most recent port (unless it was updated in the last day).
>BTW a recent post mentioned that 3-pass encoding was buggy.
>Is this one of the known bugs?
>RTFM!!!  http://www.MPlayerHQ.hu/DOCS
>Search:  http://www.MPlayerHQ.hu/cgi-bin/htsearch

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