Well not everything would be in MPEG4. Comcast started with just ESPN3D in MPEG4, then when they reclaimed some bandwidth they switched it back to MPEG2, but they have plans to switch it back once more compatable equipment reaches a certain percentage. Most of the national HD stuff is encrypted QAM anyway. Not like a TV is going to get it. I know I can only get the locals, QVC and the CSPAN's in HD with my provider. Everything else is encrypted, so you need a box anyway. Might as well be an MPEG4 box someday. The standard lineup is in MPEG2 and always will be (at least for the next 10+ years) due to DTA's. DTA's don't do HD so what does that matter. Cable is a closed network and broadcasts in QAM anyway.