try this update
http://www.64k.it/andres/data/a/AutoMen08.exe
if mediainfo fails on analysis it will trigger a hidden mplayer run for 4 seconds as analysis, so don't warry if application seems hang
after that you will see the usual options for resize...
from my simple test ( i have only 2 dvr-ms files, grabbed on internet) it is ok
BHH