98.SOLUTION :

Raw movie files are indeed very spaced hungry, and unless you compress them while capturing, you can rarely hope to record more than a few minutes' worth of video.  If the software bundled with the capture card does not allow you to use a compression code while capturing, you can use other software such as Virtual Dub (www.virtualdub.org) to do so.  When capturing with VirtualDub, click File > Capture AVI to switch to capture mode.  Click Video > Format to set the frame size and format.  Open Video > Compression and select a codec for the capture video.