In order to record your in-game video achievements, Fraps is one, if not THE, most popular tool. Leaving support for the old Windows 2000, the new version 3.5.0 can handle large AVI video files up to 4.0Gb, or can split them. http://www.fraps.com/
The popular tool Fraps enables you to capture in-game videos, many simmers used it with more or less talent to showcase their preferred airport landing or aircraft. The latest version 3.4.5 fixed the problem of scrambling colors in some videos, and updated the loop recording mode.
Already known for years, Fraps is the reference tool to video capture the video games. While you are flying full screen, Fraps can take screenshots, record your flight on video and live display the framerates. The new version 3.4.2 fixes 3 bugs and enhances the OpenGL capture speed.