The Full form of DVD is Digital Video Disc or Digital Versatile Disc. DVD is commonly known as Digital Video Disc. It is a digital optical disc storage format invented and developed in 1995 that is used to store high capacity data like high quality videos and movies. VCDs were popular optical data storage discs before invention but DVDs offer higher storage capacity than compact discs while having the same size and dimensions. There was also an unofficial full name of DVD and it was called ‘Digital Video Disc’. But as DVDs were not just limited to videos, this full name was rejected by mass technological forums. It is invented and developed by 4 companies named Philips, Sony, Toshiba and Panasonic in 1995. DVDs provide higher storage capacity than CDs (Compact disc) and can be played in multiple types of players like DVD players. A DVD comes in two dimensions i.e. 12 cm (120 mm) and 8 cm (80 mm). First one is the most common size and generally used for storing software, movies, and operating system etc. And the second sizes of DVDs are generally used for small devices like portable music player and video camera etc.