A new type of read-only compact disc that can hold a minimum of 4.7GB (gigabytes), enough for a full-length movie.
The DVD-ROM specification supports disks with capacities of from 4.7GB to 17GB and access rates of 600 KBps to 1.3 MBps. One of the best features of DVD-ROM drives is that they are backward-compatible with CD-ROMs. This means that DVD-ROM players can play old CD-ROMs, CD-I disks, and video CDs, as well as new DVD-ROMs. Newer DVD players can also read CD-R disks.
DVD-ROMs use MPEG-2 to compress video data.