digital video disc

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digital video disc (DVD) Optical disc that can store 15 times as much data as a compact disc (CD) Using the MPEG-2 compression format, a DVD is capable of storing a movie up to 133 minutes long in high-quality video and audio. DVDs come in two formats: DVD-Video and DVD-ROM. DVD drives are downward compatible, so they can also read conventional CD-ROMs and play music CDs. DVDs have a capacity of 4.7 gigabytes (GB), 8.5GB, or 17GB.

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