Read the YV12 faq (Q2), yes you need a special mpeg2dec version! Btw, Lanczos as plugin is not a v2.5 plugin, but happily it is built in. Also the crop values must be even. So your script must be something like: LoadPlugin("D:\PROGRA~1\DVD-UT~\Autodub\SOFTS\AVSFILE\ac3source.dll") LoadPlugin("D:\PROGRA~1\DVD-UT~1\Autodub\SOFTS\AVSFILE\MPEG2DEC3.DLL") Video=Mpeg2Source("D:\Save\Star\vts_01.d2v") Audio=ac3source("D:\Save\Star\s.ac3") Video=Crop(Video,4,72,716,434) Video=Lanczos3Resize(Video,544,224) Audiodub(Video,Audio)