This is really fast than download a youtube vedio via any softwares....
First you have to copy the URL which you want to download...
example :- http://www.youtube.com/watch?v=NziiiPUWgC8
then go to http://www.get2pc.com
so now paste that copied URL to the place that name as download link..
And Press Enter...
Now you see Highlighted "Download" , and click it...