The next time I will recomend a ATI card for Video editing (Capture out put wise) will be when I will hear Very Good things about ATI tech support.
Last year I run to get a Radeon 64DDR ViVo, thinking to use it for capturing Mpg1. After a searis of long fights and trying several driver versions I came to a conclusion that it's just not possible to make this cards work. At least not in W2K.
Trying to contact ATI support is like a joke. You send a Email, and get a automated responce saying somthing like Read the FAQ and if you don't see the answer Email again.
Then a second Automated responce saying giving you some more totaly un related sulotions saying that if this will not help, suprise suprise - Email us again But preper to wait for about a MONTH !!!
Finaly I got a responce saying somthing in the lines of "we have no Idea how to solve your problem" !!!
Since I need this for work and not games I gave the card to the kids that are happy to watch DVD (with lot'S of bugs BTW) and play Pokemon.