There's an avsinp.aui included in warpsharp's package which allows one to use avs script as input for aviutl. dl page for warpsharp : The warpsharp could also be used to load input and filter plugins of AviUtl so that they can be used by avisynth, some usages could be like: LoadPlugin("Warpsharp.dll") LoadAviUtlInputPlugin("m2v.aui","MPEG2VIDEO") LoadAviUtlFilterPlugin("lanczos3.auf", "Lanczos3Resize") However, i still couldn't find a way to load aviutl project file (.aup) in avisynth, well we certainly could always let vfapi do such a job, but unneccessary colorspace conversions are introduced. :p So it'll be extremely awesome if someone could make a plugin such that avisynth could recognize AviUtl project files directly, for AviUtl is just such a great tool. :D Thx. =)