Fraps is your solution, youtube cant handle 600FPS anyways
For the record, youtube's maximum fps is 30. Fraps lacks a limit video fps capability as far as i know.
Fraps lags the stuff out of most computers and games, making them impossible to play well. It's fine for small movies, like most of filipes.
I recommend Dxtory. It's a wonderful program that is more configurable. It's also worth noting that dxtory can pump out wonderful, 30fps videos when running blockland where fraps begins to skip frames and lags up your computer.
Fraps requires a beast of a computer. Dxtory requires technical know how.
http://www.youtube.com/watch?v=6_Z7SHvKyEs&list=UUnmvZH1XxHWm_RUXBbxiXRw&index=1&feature=plcpThis video was recorded by me with dxtory after carefully adjusting my settings to my computer and lots of trial and error.
Dxtory can pump out fantastic quality videos if you combine it with unoffical plugins(It's very possible to get WMM in 720p, and that's what that video is recorded with.)
Overall, Fraps is cool, but I just find dxtory better. This is mostly opinion, yes, but give dxtory a play about with. If you have questions, message me, I can help you.
(Fixed some false info)
(Also I apoligise for any grammar errors.)