What is the difference between DVD-ROM, DVD-Video, DVD-RAM, DVD-R, DVD-RW and DVD+RW?
DVD-ROM is a play-only optical disc similar to today s CD-ROM. The DVD-ROM has a much higher storage capacity (4.7Gbytes per side). DVD-Video is a play-only disc that will hold a full length feature film. The DVD-Video will hold 135 minutes of high quality video and will add extra s like multi-language support, subtitles and even interactivity. The DVD-Video quality is higher than laser discs and VHS. DVD-Video titles can be played in DVD players and computers with DVD-ROM players and MPEG2 decoder boards. DVD-RAM is a rewritable version of DVD. Panasonic launched DVD-RAM to the PC market over two years ago but the lack of domestic DVD-RAM video machines has meant that its first mover advantage has been lost. The recordable disc is held within a caddy – this protects the media from dust contamination but means the discs will not work with existing DVD players. It uses a phase-change recording principle. TDK has developed a new type of phase change recording material called AVIST (Advan
