Michael Militzer wrote: > 3) reread the iso specs. I remember a sentence similar to this one: "idct > has to meet IEEE1180 requirements with the following modifications: ..." - > so our idct might be IEEE compliant but is maybe not compatible to the > mpeg-4 standard... How about finally putting the 0 check behind the iDCT in transquant? It is only 20 instructions or so ... Marco