Taksi

Taksi is a program that will allow you to take screenshots and record video clips of your favorite games and other 3D-graphics applications.Inspired by Fraps (www.fraps.com), Taksi aims to provide an open source alternative to that great tool.

Taksi can support live video compression with any VFW video codec your system has installed (i.e. XVid, DivX, MS Mpeg4, etc).

Supports user-specified key mapping, allowing user to assign almost any key to a particular function (such as video start/stop, screenshot trigger, etc.). Runtime re-mapping of the keys is supported via GUI: user can change keys without having to restart the game.

Custom video settings are supported (see manual.txt for more details about this).
Basically, this allows a user to specify on a per-game basis the frame rate of the captured video, and the weight of each source frame. The weight determines whether a particular frame is captured or not. This allows for creation of smoother and faster videos, when generic algorithm doesn't produce desired results.