Sorry to make your Native American cry!

Ok, I'll try to explain it a bit more simply since my question hasn't really been answered, though I appreciate the responses so far.
I have a mame cabinet, hardware wise it's mostly complete. I still have a lot of software stuff to do, setting up Hyperspin and stuff but that's irrelevant to this I think. I just wanted to mention it to make sure you guys know the status of the build just in case it does matter.
So I've been streaming from my gaming PC lately and in the background of my Twitch stream you can see my cabinets and I've gotten some requests to stream some classic arcade games and I thought rather than emulate those games on my main gaming PC, that it would be cool to stream the feed from the actual cabinet and have the webcam on top pointed down towards the players and control panel. Anyway, I don't want to stream from my cabinet but pipe the audio/video feed from the cabinet to my gaming PC to be streamed. I'm just looking for recommendations of the best way to do that? I'd like to find either a internal video capture card that does analog for streaming cabinet play and digital because maybe in the future I'd want to stream one of my current gen game consoles. So what are your recommendations for capture cards that would accomplish both of these tasks or what is a good external device that would be both compatible with the analog signal and HD game signals?
Thanks!