Odd video degradation

[LordKariya]

Guys,

I'm using an ATI AIW radeon on Windows 2000 (NTFS), Athlon XP 1600+. When I enter capture mode in virtualdub, approximately the top 5% of the signal (all the way across horizontally) has a blurred, damaged-looking picture. It looks sort of the same as massive compression does, the way it's heavily macroblocking. The strange part is, it's not the actual inputs/cables; If I remove all inputs to the card, and switch between the 3 input modes (S-Video, Composite, Tuner), that top 5% has a distinctly different appearance, as though something's not quite right about it. While most of the empty signal capture is black/snowy, that top 5% flashes green and white. I'm not sure exactly where to start and was hoping someone had experienced a similar issue.

Thanks for your help,
LK.

[LordKariya]

Not sure if this helps, but it seems to occur on shows that have the most 'action'. on toons it's significantly less apparent, while on live-action shows it's more obvious. On the tivo menu there's no distortion at all.

[wertigo]

My guess is that you are using old drivers or that you havent tuned in the channel 100%

But since I'm not sure more answers are welcome

/wertigo