DVDShrink uses compression algorithms the reduce file size (to the detriment of quality). The more you compress, the lower the quality. It's only capable, by design, of handling the DVD file format. (vob,bup,ifo)
There are plenty of file conversion apps out there, both free and pay, that will convert multimedia files to the dvd format that shrink can then handle. I use WinAVI and Magic Video Converter. Between the two, they will convert to>from most every current multimedia file type out there.
Edited by HitSquad, 28 October 2008 - 08:51 AM.