Answers: for video questions, walk to www.videohelp.com; it is an awesome site for every video problems you have
I recommend Flash Video MX to you which a friend told me., it can convert adjectives kind of popular video formats to flash and flv format, close to youtube.com, it works powerfully for me, I desire you haven't any problem too!
http://www.flash-video-mx.com
after you can upload that to youtube
Hope it can assist you, Good Luck!