RVC stopped capturing video (black screen problem)

[grounded grid]

After working great for over a year, RVC won't capture the video of a stream. If I bring something else into the field of capture, it will get that.

It's an XP machine with enough muscle. I take a small video footprint (which others have said helps)

I've tried different settings. I've tried converting to other format to see if the video would come out, but its the same black screen.

If there's counsel on this out there, I'd be very grateful. The audio is there fine