Sorry for the late reply here. Encoding was done on a dual Xeon 3.2 Ghz box. Playback was on a variety of processors including a Pentium 4 3.4 Ghz box, Pentium 3 800 Mhz box, Pentium M notebook computer, Pentium 4 2.4 Ghz box, amongst others. I also played back on the dual Xeon. Like I said in the r...