[MPlayer-users] Cropping in original-size vs reduced-size

[RC]

On Sat, 24 Mar 2007 18:03:48 -0400
Jorge Fábregas <jfabregas at onelinkpr.net> wrote:

> I'm talking about the PAR compensation from a non-square environment
> to a  square-pixels environment.

If you just let -vf scale calculate the final dimentions for you (using
-10 for either height or width), either way you will end up with almost
exactly the same result, and both will have the proper aspect ratio.

If you really want to understand it:  Scaling to square pixels before
cropping just makes it EASIER on you.  If you want to crop first, then
you just have to do a little math to figure out the appropriate
dimentions for a proper aspect ratio.  Almost nobody ever does, since
Mencoder can easily handle it.