It looks like MKV (aka Matroska file format) is supported on most video playback apps, it's just that MKV is not efficient or less of a resource hog; at least in my observation. And I'm surprised that the G4 is handling the load well. I would have thought that it was going to choke under the pressure. I just wouldn't try to play the file back on anything less than a G4. If you have other software that can support it, you could convert MKV into say an MPEG 4 or something more efficient.

73s de Phreakout. :rambo: