I am an Individual Professional, expert in Graphic designing as well as Video Composing and Editing. While my right hand works on Photoshop and Illustrator, my left works on After Effects!
After reading your project description, I am really interested in composing this intro video for you at a pace you set! The Final File could be of any format you select. If you want this to be uploaded on Youtube, then the best option is the MP4 or FLV. That's what we recommend and Youtube as well!