Prerecorded DVD is called CD-ROM including DVD-ROM, DVD-VIDEO, DVD-AUDIO three formats.
DVD-ROM is the basic format of
DVD family, which is the basis of DVD-Video and DVD-Audio.
DVD-ROM is a data
disc with a capacity of 7 times larger than that of CD-ROM.
The data transfer
rate is 9 times of that in CD-ROM. So it is widely used in computer area.
DVD-ROM file system uses the UDF and ISO 09660 standard which is compatible with
computer systems. This technology is widely used in data access, multi-media and
DVD-Video is called DVD
film disc, which is a kind of DVD video format.
DVD-Audio is a kind of DVD audio
(1) 16, 20, 24 bit quantification
(2) 48/96/192KHz and
44.1/88.2/176.4/KHz sampling frequency.
(3) 2 channels or multi-channels, 6
channels at most.
If we select the maximum quantification 24 bit, sampling
rate of 192 KHz to record 2 channels stereo program, a DVD-5 can store 64
minutes of this program. CD-DA is 16 bit quantification, 44.1 KHz sampling rate;
its data quantity is only 15% much as that of DVD-Audio.
DVD-Audio uses LPCM
which is the recurrence of the original audio without compaction. It can also
use the Dolby Digital, DTS Specifications.
DVD-Audio can have a motion scope
of 144 db while the CD can only have 120 db.
DVD-Audio needs a special player
of DVD-Audio or DVD player that is compatible with DVD-Audio. PC can not play
DVD-Audio as a DVD-Audio decoder is needed.
More Details: http://www.powerdatarecovery.com/cd-dvd-resources/prerecorded-dvd.html