DVD
Acronym for Digital Versatile Disc or Digital Video Disc, a new type of CD-ROM that contains at least 4.7 GB (gigabytes) of data, enough for a full-length movie.
The DVD is gaining more and more market share, especially in the film industry, because DVDs offer additional gimmicks that make them attractive to purchase. For example, a DVD usually contains multiple audio tracks (several languages, director's commentary, and more), subtitles in numerous languages, making of, behind-the-scenes information, games, pictures of the actors, etc.
The DVD specification supports storage capacities of 4.7 to 17 GB and data transfer rates between 600 and 1300 Kbytes/s. A major feature is the DVD's backward compatibility (i.e., the ability to read CD-ROM, CD-R, CD-RW, CD-I and Video-CD as well as the DVD format).
Video data is compressed using the MPEG-2 standard while audio is stored using the AC 3 standard.
Back
|
