On Thursday 12 December 2002 15:45, January Weiner 3 wrote some stuff: I think that you can do mencoder -oac copy -ovc copy -ofps 25 -o new.avi old.avi in order to convert your 10 fps avi into a 25 fps avi. Then split new.avi up into audio and video portions for mpeg2enc, mp2enc and mplex to put back together again.