I am looking for a recommendation on a hdtv tuner card. I am turning my old computer into a mythtv box (athlon xp 2000). I currently have a winfast tv2000 deluxe that only gets analog. I would like to get rid of this and have 1 card that does both analog and hdtv. I have been looking for a card that does hardware encoding and works with linux. There doesn't seem to be any cards that do hdtv and hardware encoding (this site lists one). Is this because hdtv is broadcast in mpeg 2 and there is no encoding required?

What are some cards that would help me out?