I have made my first music video using Vegas and am now trying to render it. At good quality, NTSC DV 720x480, my 5 minute video is 1.3 gigs. After rendering it to .mov file, it is 13 gigs! How come?
-video footage recorded at SP on Sony DVD camcorder
-includes music, video, and still shots
-would like to show this video on a large-screen projector

I really don't know much about computers and am just trying to learn as I go. Please help.