[MPlayer-users] Scaling and Cropping

[Reimar Döffinger]

On Fri, Aug 17, 2012 at 12:09:56PM -0700, Graham Lawrence wrote:
> I produce encodes with a script, using a 2 pass encode that produces
> an output called movie.2
> If so indicated by cropdetect, as a final step the script crops
> movie.2 to the final encode, movie.avi
> 
> The dvd giving me a problem presents in mplayer as a 720x480 image,
> with an extensive black border on all sides in full-screen
> presentation
> mplayer movie.2 presents as a 720x352 image, with black borders only
> at top and bottom in full-screen
> mplayer movie.avi appears identical to movie.2, but it is not because
> mplayer movie.2 -y 480 is identical to mplayer movie.2, but
> mplayer movie.avi -y 480 is identical to the presentation of the dvd
> 
> I infer from this that this movie crops normally, but will scale only
> in the horizontal direction, not at all vertically.  Is there anything
> that might be done to get it to scale vertically as well?

I'm afraid I do not understand your questions/problem at all.
So at best I can suggest looking at and trying out the -aspect and
-panscan* options.
Also, -vf expand obviously can add back any black borders -vf crop
removed.