Fraps is a universal Windows application that can be used with games using
DirectX or OpenGL graphic technology. In its current form Fraps performs
many tasks and can best be described as:

Benchmarking Software - Show how many Frames Per Second (FPS) you are
getting in a corner of your screen. Perform custom benchmarks and measure
the frame rate between any two points. Save the statistics out to disk and
use them for your own reviews and applications.

Screen Capture Software - Take a screenshot with the press of a key!
There's no need to paste into a paint program every time you want a
new shot. Your screen captures are automatically named and timestamped.

Realtime Video Capture Software - Have you ever wanted to record video
while playing your favourite game? Come join the Machinima revolution!
Throw away the VCR, forget about using a DV cam, game recording has never
been this easy! Fraps can capture audio and video up to 2560x1600 on
dual-core CPUs (1152x864 single-core) at up to 100 frames per second!

(Windows 2000, Windows XP, Windows 2003, Vista (including x64 editions)