if you need to backup dvd's get thishttp://www.afterdawn.com/software/video_software/dvd_rippers/dvd_shrink.cfm
or need to rip dvd movies files then get Handbrake(only .mp4 & m4v)http://handbrake.fr/
for .avi & other output fomats
get the previous version
from here(on the right side on windows you had an option for downloading older versionshttp://www.filehippo.com/download_handbrake/
Both are opensource tools , so its not bad to have a try on it..
it workes better for me...