sometimes you shouldnt use that codex for compresion i have found...others will either give a higher or lower compresion but better quality. plus u might want to lower the frame rate. depending on what u are using it for...say the internet you should try from 5 to 12 frames per sec. u might know these things but if not change that and u will save loads of space and make a smaller file. internet = 5-12 fps computer = 12-31 fps tv/movie/other = 32+ fps gl -phillycheese81