Fraps README píše:
Why is the AVI movie generated by Fraps so big? How can I reduce the size?
The filesize is big because there isn’t enough time to encode the movie while the game is running. The movie frames are slightly compressed, but still require a large amount of disk space due to the high resolutions. Once you have finished capturing you should convert the saved AVI into one of the popular compressed movie formats such as mpeg or divx. Recommended programs for doing this are tmpgenc (Tsunami Mpeg Encoder), and VirtualDub.
Using VirtualDub is quite easy. To create a compressed version of the AVI follow these steps:
Start VirtualDub
Select File->Open and choose the AVI in the Fraps directory you wish to compress.
Select Video->Compression and choose the codec you wish to compress with (usually divx)
Select File->Save As AVI and specify a filename for the new AVI.
potreboval by si dost vykonny komp aby ti zvladal zaznamenavat a naraz este aj komprimovat video
ale ak ti ide o zmensenie az po nahrati tak pouzi napr. SUPER