so i edited a short clip of my daughter turned it black and white worked awsome but the file size was outragous went from 3 megs to 30 megs.

have also tried editing 9 vedeo clips each about 175 megs or less and put them into a featured film when i export the file it crashes puter and the file is like 500 gig this definatly will not work for me why does it do this and how can i make it a realistic file size.