When using MPEG Streamclip to convert a 4.47Gb DVD to MPEG4 & the finished MP4 file ends up at over 6gb!! Im using 100% quality , is that the reason? How do i control the size of the conversion ? Limit data rate to x Kbs - if so how do i work it out if the movie is 1hr.40mins ?? Does Streamclip convert a second for a second. if so i could calculate the size?? Ok i now understand that i need to limit date rate and this calculates the end size..