Reddit reviews Gamecube N64 S-Video and AV Cable

If your TV supports s-video get one like this. Might as well get the best quality when you can.

I ordered this one - https://www.amazon.com/Gamecube-N64-S-Video-AV-Cable/dp/B00005RH4D

So yes it does

Okay. So at the $50 price point the best card I know is the Avermedia c039. However, I don't know if it will perform better than your current card.

The first thing you should do that will give you a huge quality boost is deinterlace your video. You see those weird lines that show up whenever your character moves? There's an easy way to get rid of them in OBS. Under your capture card's settings there should be an option for deinterlacing. Yadif x2 looks the best imo. If your processor is too weak try regular yadif. This should make the video quality much better.

Also, are you using a spitter? For these capture cards the easiest way to get optimal capture with them is to use S video cables that have the yellow output and the s video like these and plug the yellow one in to the TV and the s video in to the capture card.

Here is a quality example of the c039 with Melee: https://www.youtube.com/watch?v=f2HoOTBunnE

Compare that to the results you get with your capture card and see if it's worth it to you to upgrade. I doubt the quality will be much better but who knows.

If you want to save up for something better you don't have many options. You could do an RGB or HDMI mod to your n64 to get the best possible quality. I don't recommend the elgato. It does it's own deinterlacing and I think it makes the picture look blurry. A cheaper capture card will give a better end result. Your next step up if you don't mod is probably the X Capture 1 or Micomsoft SC512 or maybe some cheaper PCI internal card. I'm not sure if there's a middle ground between $50 and $200+. Good luck!

Does that mean that something like this won't work?

http://www.amazon.com/Gamecube-N64-S-Video-AV-Cable/dp/B00005RH4D