I am under the impression that some HD channels on D* are in MPEG-2 format while the majority of them are in MPEG-4 format. Does anybody know which ones are still in MPEG-2? Recently, I have been watching the NBA playoffs on both TNT and ESPN and have noticed the HD quality to be sub-par on both channels. Are both of these channels, or either one, in MPEG-2 format? I watched the Celtics-Cavs game last night on my local RSN, Comcast Sports Net New England, in HD, and the quality was far superior to that of the ESPN broadcast.