Not many people share vts files!!! How can you know if you have them all & there's also info files that are necessary for these files to be understood. Thus, most people convert dvd's to other formats such as avi or mpeg, etc. & their sizes are around the CD size. So I would suggest aiming for avi or mpeg. See Movie download issues

BTW the newest Nero & Roxio burner programs can convert these for you.