The DVD (Digital Versatile Disc) was first released in 1996 and was designed to store digital data such as video, audio, and computer files. It has a higher storage capacity than a compact disc (CD), with a standard DVD able to store up to 4.7 GB of data and some variants able to store up to 17.08 GB. DVDs are compatible with DVD players and can be used to watch movies and other video programs.
Prerecorded DVDs, also known as DVD-ROM, are mass-produced using molding machines that stamp data onto the disc, making it a read-only format. These discs can only be read and not written or erased. Blank recordable DVD discs, such as DVD-R and DVD+R, can be recorded once using a DVD recorder and then function as a DVD-ROM. On the other hand, rewritable DVDs, such as DVD-RW, DVD+RW, and DVD-RAM, can be recorded, erased, and re-recorded multiple times.