So as I've been analyzing FTA channels on the various KU satellites, I notice some differences in encoding, compression scheme and bandwidth. The NBC feeds on 103 seem to be uncompressed, varying between 9mbps and 21mbps. Velocity on 121 is H.264, but only about 3.65 mbps. PBS HD East on 125 is uncompressed at 13.5 mbps. Why does the Velocity H.264 stream look so good but the bitrate is so low? Why don't other networks use .264 and .265 if the picture looks as good as an uncompressed DVB-S2 stream? Is H.265 considered "4K"? So much to digest. I'm confused.