The Visionsat, as Brentb636 said, will only do MPEG-2. I have tried both HD and 4:2:2, and both record properly. I have not tried an HD 4:2:2 channel, but I see no reason why that wouldn't work. As far as recording the channels, you can hear the audio, but you can't see the video. It will say "Service Error". If you don't hear anything, watch your hard drive activity light. When there's something there, it will be active. When its HD, it will be blinking rapidly (lots of data being transferred).