i'll recomment u using -videos

I can recommend you one completely free software.E.M. Youtube video download tool is not only a FLV Converter but also a YouTube Converter which can convert youtube to all popular portable devices, such as iPod, flv video converter iPhone, Sandisk Sansa, PSP, Nokia, Zune, Creative Zen, Archos, Sony Walkman, PS3, Blackberry, Pocket PC, etc.i'll recomment u using -videos.mobilespi.com i find this site while searching google.No need to download flv youtube download any software, just copy paste the youtube link and you can download ur favorite video in 3GP, MP4, FLV etc format.