I have edited on this kind of computer programs up to an hour in length. So it can be done. The key is analog input. S-Vhs is an analog signal. You need a way to convert to digital. Once you have transfered the analog signal to your computers hard drive you will need some kind of editing program to whip it into shape. Windows XP has a decent cheap editor built in. There is also some programs that convert analog into DVD but you need some hardware or a card to make that change.