A DVD converter
is a software program that help copying the content of a DVD to a hard disk drive.
They are mainly used to transfer video on DVDs to different formats, to edit or back up DVD content, and for converting DVD video
for playback on media players and mobile devices. Some DVD converters include additional features, such as the ability to decrypt DVDs, remove copy preventions and make disks unrestricted and region-free.
The article is based on materials from wikipedia.org.