I tried out virtually every piece of software that i could find a while back and the best was vdownloader:
http://www.softpedia.com/get/Internet/Download-Managers/VDownloader.shtml
That progs a load of garbage as far as I'm concerned, every time I tried it all I kept getting was sorry but this file is not for downloading
you mean to say there is stuff on youtube worth keeping?
how about youtube to mp3 (audio)?
I use a site called zamzar.