I've been wanting to get screenshots and videos from my Sega Genesis using my GameBridge device, but all I get is what is shown in the image below - distortions and lots of static. It's only the Sega Genesis that gets it. All other systems, the PS1, PS2 (borrowed from my sister), NES (that's older than the Genesis), and Gamecube, don't have any of these distortions, it's only the Sega Genesis that does.
How can fix this? What is causing this? I do not want to use an emulator, I'd like to use the console itself.
A digital camera pointed at the TV gets a much better quality than this, so much better than the screenshot below. I've tried swapping between using channels 3 and 4 and connecting the Genesis connector into up to two other console connectors that definitely work and all these give the exact same results.
View my screenshot here