Hello
Yes, multiple video streams in a MKV is a good idea
But it's for YouTube or Dailymotion, so I can't
But I use MKV format generally
Fraps, it was only to capture the image from Higan (and other games but in HD, but sometimes I use Dxtory too). But for my videos of Super Nes video games, I use only the Snes9x emulator. I can directly record video in the native resolution of the game