[MPlayer-users] Cropping&resizing

[Misio]

Hello
I've got some questions concerning resizing and cropping. Firsly: how to make MEncoder crop and resize input data (-vop crop=... -vop scale=...) doesn't seem to work (only cropping is performed)
Another thing is DVD aspects. I have a movie which is 720x576 pixels big: pixel aspect is obviously 1.25:1; however MEncoder (and MPlayer) says that correct aspect for this movie is 1.78:1 (and  of course this is true) and just after that starts to scale the video to 1.78:1 aspect which gives 1025:576 pixels. Question is: how to turn off this automatic-aspcet-correction and how to control which dimension (w or h) is chosen as base (in my case the height)
Thanks for any tips/answers/information
Peter