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What is DVD-ROM, DVD RAM and DVD-Video?

April 26, 2017DVD DVD-ROM DVD-Video RAM

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What is DVD-ROM, DVD RAM and DVD-Video?

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CDs are 650 Mbytes single sided, single layer storage media. DVDs are 3.95 GBytes or 4.7 GBytes storage media for single sided single layer. DVD writers and DVD media for workstation (PC, Mac, Unix) are all single sided, single layer. There are double sided double layered DVDs, but they are created by replicators. DVD-ROM is nothing more than a storage media at 3.95 or 4.7GB, used to store data, programs, or videos. DVD-ROM is for computer use only. DVD-Video is for standalone and computer DVD players. It can contain 2-3 hours MPEG 2 video, NTSC or PAL format, with PCM, MPEG, or AC-3 Dolby (5.1 or stereo) audio. It supports navigating hot buttons on menus, chaptering, multiple languages, multiple language sub titles, slide shows, multiple video tracks, etc. DVD-RAM is a multi-time re-writeable and erasable media, at 2.7GB, or 4.7GB single sided, 9.4GB, double sided. These new DVD-RAMs are random accessible, spins at higher speed, therefore, can be used for DVD videos as well as for sto