I found this script on Depan help file regarding FPS conversion from 16,6 fps to 25 fps: Avisource("kino.avi") loadplugin("depan.dll") i=ConvertToYV12() data=DePanEstimate(i, range=1, trust=5) f1_3=DePan(i,data,offset=1./3) b1_3=DePan(i,data,offset=-1./3) interleave(f1_3,i,b1_3) selectevery(6,0,1,2) But I've some movies at 15 FPS that I want to convert to 25 FPS, how do I have to change values to achieve that? (the above script result in 22.5 FPS...)