@Yamagata:
Code:
STDMETHODIMP_(const char*) TffdshowDecVideo::get_cuurent_idct(void)
Is this just a typo or did you ran out of operation names?
I suppose it's the latter otherwise VS would complain but you never know...
Edit: Where in the libavcodec code is the part that sets the IDCT when 'auto' is selected? I guess lavc reads out the FOURCC and sets the IDCT based on a pre-defined list but I can't find the part...