I renamed my VOBs to MPGs and they still play perfectly, and I'm using this script with AviSynth 2.58

LoadPlugin("C:\Users\username\Desktop\mpegdecoder_25_dll_20030216\MPEGDecoder.dll")
MPEGSource("D:\TEMP\PROJECT\VTS_01_1.mpg")

When I open the avs script in VirtualDubMod 15.10.3 it said it couldn't find a YV12 decompressor, but after installing Koepi's XVID codec it loads the script, but this is what I get:

Does anyone know what I did wrong here? I've been trying for days to get *any* script to work with this thing but so far nothing :(