Hey!!! I have a much better solution for all your problems
1) Find your video on youtube.com
2) Copy the URL
3) Enter
www.youtubex.com
4) Paste the URL in the download box
5) Right-click the download button and choose "Guardar destino como.. " or "Save [sth] as..."
6) Save it and change the extension to .flv
7) Download
SUPER (C)
http://www.erightsoft.com/S6Kg1.html
Go to the end of the page and click on any "Super Setup File" link. It is the BEST converter ever, it is free, doesn't need a crack, doesn't have time limit, doesn't have any virus and it can convert any format to whatever format exists.
8) Convert the .flv video in SUPER (C)