Best recorder for Snes9x/ZSNES?

So here's the issue:

All of the videos I put on YouTube (Channel: HoD Hacking) were made using SNES9x's AVI recording feature, using Full Frames(uncompressed).

This has got a problem with videos going over 2GB, like my newer unreleased videos. I got options there like the one mentioned above, Cinepak Codec by Radius, Microsoft Video 1 or Fraps Video Decompresser(doesn't work), but the quality is too bad/the movie is not being recorded at all for average standards.

I have tried various methods, such as AVI Joiner programs but nothing seems to work at all.
I have heard of screen recorders such as Xvid and Elgato[correction probably needed] but I don't feel too safe downloading them, so I cane here in order to get advice from a community which makes SNES videos frequently.