Tnanks Rav994
... but the problem don't resolved with your suggest.
Have you the last svn of MP 1.0? have you coreavc in filtergraph and ffdshow Yv12 fourcc paramter in ffdshow osd?
This the filtergraph on a XP machine and nvidia video card instead my main pc with Vista, Evr and Ati 3850
same problem. ffdshow is in the filtegraph but it's not connected.
also tried "ffdshow raw video" and "ffdshow subtitle video" : do not work too.