I’m going to stick my kneck out here and say that the encoding tools available for the mac are inferior to those available for the PC unless all you want to produce are QuickTime movies.
I’m a big Mac fan having bought my first one in 1989. I’ve never owned a PC until last year and now I do all my file encoding on the PC using Procoder for WMV’s and MPEG-1 and Cinemacraft for MPEG-2.
Both work faster than real time and produce better results tha BitVice, Cleaner, Mainconcept, Wired MediaPress etc – I’ve tried them all.
Cinemacraft is expensive at