Yes, thank you, it is divx, that makes it mpeg4, I am not used to making an mpeg4 --> mpeg4 conversion instead of mpeg2 --> mpeg4. I was not sure if I could still use fast recompress with AviSource as I do with Mpeg2Source. So, thanks, Stephen
... and if it is DivX 3, use ffvfw as decoder to open it as YV12.
I can't find any information how to open an AVI file in VirtualDubMod, using FFVFW as a decoder. perhaps I don't have a new enough version. Stephen