How to Reduce Fraps File Size
Fraps lets you record gameplay on your computer to share online, but the file size for finished videos can be too bulky for video-sharing sites. Reduce the file size with a few recording tricks, and Fraps will output smaller videos and run faster at the same time. Use the Movies tab on the Fraps main screen to change the recording settings.
Lower the frames per second. Fraps records at speeds up to 60 frames per second, but the video will remain smooth even at 30 frames per second. Most sharing sites will not display video at rates higher than 30 frames per second, so no loss will occur in the final product. Change the frames per second in the Video Capture Settings section.
Record smaller video. Choose the "Half Size" option in the Video Capture Settings section to record videos with a smaller resolution. This significantly reduces the file size.
Lower the game resolution. Whether recording full-size videos or half size, Fraps bases the video resolution on your game settings. Play the game at lower resolutions to further reduce the video size. Online videos compress to resolutions as small as 320x240 and will not be improved by a larger original file. Change the resolution in the video options of your game's menu.
Record lossy color. Ensure the "Force Lossless RGB Capture" box in the Movies tab is not checked. Recording with this mode enabled creates perfectly accurate color reproduction and increases the file size. Videos created without this option retain most of their color detail.
Compress the video. While changing the settings makes some improvements, the best way to change the file size of a Fraps video is to compress it after recording. Import the .avi file into Movie Maker, iMovie, VirtualDub or other video-editing software and export it as a .mov, .mpeg or smaller .avi file.