consisting of two bonded
(4.75 inch) diameter and 0.66 MM thick polycarbonate substrates, each with reflective metalized layer and protective lacquer coating. Unlike a CD, a DVD is available in two versions: single-sided DVD can store
from 4.7 to 17 gigabytes of data
, and offers a data transfer rate of 4.7 megabits per second; a double-sided DVD can store 133 minutes
(or longer with compression
or at lower resolution) of full-motion video
or a full length Hollywood movie at high resolution
with 8 sound tracks, or 592 minutes of music on 6 audio channels. The term 'Digital Video Disk' is now archaic and the medium is referred to only as 'DVD.' All DVD drives can read CDs.
Also called DVD-Audio, DVD-ROM, or DVD-Video.