DVD

DVD - Digital Versatile Disc (a.k.a. Digital Video Disc). An optical disc that has two sides and can store 4.7GB of data per side, i.e. enough for a 133-minute movie including several audio tracks in formats such as stereo, Dolby Digital or DTS, and advanced menu systems, subtitles and still pictures that can be played by many standalone DVD players and most computer DVD-ROMs. If the disc has two layers per side, then it can store up to 17GB of data. DVD uses MPEG-2 compression for video and audio.

DVD-Video. A means of distinguishing between DVD that is used primarily for audio (DVD-Audio) and DVD that is primarily used for video.