On Sun, 9 Mar 2008 17:06:04 +0100 "Olivier Rolland" <billl at users.sourceforge.net> wrote: > $ mencoder -nosound of mpeg -mpegopts format=dvd:tsaf -vf If you failed to type the '-' before 'of', that would certainly cause your problem. > $ mplayer -dumpvideo -dumpfile video.m2v movie.mpg Use mencoder with -of rawvideo instead of -dump.