I use a BT848 based capture card (Flykit w/o Tuner) to make netmeeting and watch Video. The drivers i use are Voodoo³ 1.07 (running 16 bit), latest btwincap (generic bt8x8 from btwincap.sourceforge.net) and the included amcap using video-preview and the overlay mixer. When i run amcap in a window and run other applications on top of it then i have the effect that one color of the application seems to be transparent and shows the underlying video input. This also happens if amcap is minimized.  I could check the 1.07b Voodoo³drivers but i can't check if btwincap is responsible for this as i don't have a driver cd with the original drivers for my capture card to test all possible driver combinations.

Regards,
Andreas