Download the latest & greatest DVD Software including: DVD Rippers,
DVD Converters, DVD Burners and more! Also learn about DVD
Burner hardware, DVD discs, and the DVD format!
Artifact - A video defect that occurs
due to the digital conversion and/or compression process. Artifacts
can be caused by video compression, transfers, data errors, and
analog signal noise.
Aspect Ratio – The ratio of width to
height of a video image.
Authoring - The process of designing and
creating the content of a DVD.
Bit rate - A bit rate is the amount of
information (or bits) that is transferred per second (bits per
second or bps).
Book A - DVD Physical format
Book B - DVD Video format
Book C - DVD Audio format
Book D – DVD-R format
Book E – DVD-RAM format
- To record or copy information onto a rewritable disc such as a
CD-R, CD-RW, DVD-R, DVD-RW, DVD+R or DVD+RW.
CD - Compact Disk. A media that uses a
single track, like phongraph records. This layout of data makes
random access of data take longer, this is commonly referred to as a
long seek time. CD's have a capacity of 700MB (depending upon the
CD Recordable (CD-R) - A recordable
technology that allows you to be write to an inexpensive blank CD
once. CD capacity of CD-R media is measured in minutes (this
technology was adapted from the same as audio recordings) as well as
data capacity. There are two main CD capacities: 74 min (650MB), and
80 min (700MB).
CD-ROM - A Compact Disc-Read Only Memory
(CD-ROM) is designed to store data in the form of text, graphics and
audio. CD-ROMs use the Yellow Book standard as published by Philips.
They cannot be recorded onto.
CD Re-Writable (CD-RW) -
A CD-RW disc can be rewritten over a thousand
times and read on MultiRead CD-ROM drives or CD-RW compatible Audio
CD players. CD-RWs support UDF (Universal Disc Format), which allows
for read-write interoperability between all the major operating
systems as well as compatibility between rewritable and write-once
Constant Bit Rate (CBR)
- Constant Bit Rate is an encoding method that maintains the
same bit rate across the entire audio or video file.
- Any technology that is used for compressing and decompressing data
such as audio (MP3) or video (MPEG).
Decode - The process of decompressing
audio or video.
Dolby Digital - An audio coding system
used in the DVD Video format to create mono, stereo, and surround
DVD - DVD, introduced in 1996, was
originally known as Digital Video Disc but soon became known as
Digital Versatile Disc. It is the next generation of optical disc
storage technology. which shares the same
overall dimensions of a CD, but have significantly higher capacities
- holding from 4 to 28 times as much data. Single sided DVDs
can store 4.7GB for single layer and 8.5GB for dual-layer disks.
Double sided DVDs can store 9.4GB for single layer and 17GB for
Launched in mid-2000, this audio-only storage format similar to
CD-Audio, however offers higher quality sound from 16, 20 and 24-bit
samples at a variety of sampling rates from 44.1 to 192KHz, compared
to 16 bits and 44.1KHz for CDs. DVD-Audio can also contain music
videos and graphics.
DVD Burner - A piece of hardware (i.e. a
physical device) that creates a DVD disc using a laser that “burns”
the information onto the disc.
DVD Burner Software – Software that
communicates with the DVD burner. It provides instructions and
information to the hardware device that tells the drive what
to burn and how to burn.
DVD Converter – A program that is able
to switch or convert between different video formats (ie. DVD
to VCD, DVD to CD, DVD to AVI, etc).
DVD Forum - An
international association of hardware and media manufacturers
that developed the DVD definition. Members include Hitachi Ltd.,
Matsushita Electric Industrial Co. Ltd., Mitsubishi Electric
Corporation, Pioneer Electric Corporation, Sony Corporation, Thomson
Multimedia, Time Warner, Inc., Toshiba Corporation, and Victor
Company of Japan Ltd. This group wants to promote broad acceptance
of the DVD-RAM and DVD+RW formats.
DVD Random Access
Memory (DVD-RAM) - A
rewritable DVD disc endorsed by Panasonic, Hitachi and Toshiba.
DVD-RAM discs with 4.7GB of storage were released in 1999, and
double-sided 9.4GB discs in 2000. DVD-RAM drives typically read
DVD-Video, DVD-ROM and CD media. The current installed base of
DVD-ROM drives and DVD-Video players cannot read DVD-RAM media.
DVD Recordable (DVD-R ) - Introduced by
Pioneer in 1998, DVD-R offers a write-once,
read-many storage format similar to CD-R and is used to master
DVD-Video and DVD-ROM discs.
DVD Ripper – Software that is able to
digitally extract data from a DVD disc and saves the data to the
computer’s hard drive which can then be burnt onto DVD or CD.
DVD-ROM Read Only
Memory (DVD-ROM) -
Introduced in 1997, this read-only DVD disc is used for storing data
as well as audio and video. DVD-ROMs run in DVD-ROM or DVD-RAM
drives, but not DVD video players. However, most DVD-ROM drives
will play DVD-Video movies.
DVD Re-Writable (DVD-RW)
- Introduced by Pioneer, this rewritable DVD
format is similar to DVD+RW. It has a read-write capacity of 4.7 GB.
- This format was developed in cooperation by
Hewlett-Packard, Mitsubishi Chemical, Philips, Ricoh, Sony and
Yamaha. It's a rewritable format that provides full,
non-cartridge, compatibility with existing DVD-Video players and
DVD-Video - Popular
MPEG2 video format that is
designed to be used to store movies on a DVD and can be played on
most DVD players.
Encode - The process of compressing
audio or video.
ISO - International Organization for
Standardization (ISO) is a non-governmental global organization
established in 1947 that works to develop standards across goods and
ISO 9660 - A widely used data
interchange format adopted in 1987. CDs created in this format can
be read by Unix, Macintosh and Windows computers. ISO 9660 is
inadequate for the higher capacity recordable and erasable DVDs.
MPEG - The Moving Picture Experts Group
(MPEG) is a working group under the International Organization for
Standardization (ISO) that sets the standards for encoding audio and
video in digital format.
MPEG2 - MPEG2 is a second set of
flexible compression standards created by the MPEG group. This set
of standards takes advantage of the fact that over 95% of digital
video is redundant, however some portions are much less redundant.
MPEG2 handles this by using higher bit rates (i.e. higher quality)
for more complex pictures and lower bit rates for simple pictures.
Seek Time - This refers to the amount of
time it takes to find the correct position on storage media so that
data can start to be read.
Video Object File (VOB) - A data file
used in the DVD Video format to deliver video, audio, and graphics.