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DVD Video structure
DVD Video discs typically contain one or more titles, which
may be subdivided into chapters.
DVD Audio structure
DVD Audio discs contain groups and tracks.
SACD/Audio CD structure
SACDs and Audio CDs contain tracks.
Some SACDs consist of the 2 channel playback area and
the multichannel playback area.
MP3/WMA/JPEG/DivX structure
On an MP3/WMA/JPEG/DivX disc, a folder can be a
member of another folder, creating hierarchical folder layers.
If you are familiar with a personal computer, you may easily
understand the hierarchical file/folder construction.
Aspect ratio (DVD)
The aspect ratio is the ratio between the vertical and
horizontal size of the picture displayed on a TV screen. The
aspect ratio of normal TV screen is 4:3 while that of the
wide-screen TV and HDTV screen is 16:9.
Subtitle (DVD)
Some DVDs contain the recording of more than one subtitle
languages. With these discs, this unit can select one of the
subtitle languages as desired during playback.
Angle (DVD)
Some DVDs contain scenes which have shot simultaneously
from multiple camera angles. With these discs, the same
scene can be viewed from each of these different angles.
DVD Video
The format for storing MPEG-2 video on DVD, with
interactive menus, multiple soundtracks, subtitles, camera
angles, and so on.
DVD Audio
The DVD format for storing up to six(5.1) channels of 24
bit/96 kHz digital audio or two channels of 24 bit /192 kHz
digital audio.
SACD(Super Audio CD)
SACD uses DSD(Direct Stream Digital) technology for
higher quality sound than standard audio CDs. There are
three types of discs : single layer, double layer and hybrid
discs. The hybrid disc contains both standard audio CD and
Super Audio CD information.
• “Super Audio CD” is a registered trade mark.
MPEG(Moving Picture Expert Group)
It is regarded as an international standard for compressing
and restoring digital video and audio signal. “MPEG”
standards include MPEG-1, MPEG-2 and MPEG-4. Video
CD and MP3 are based on MPEG-1, while DVD Video is
based on MPEG-2.
MP3
MP3 is an audio data compression format, which stands for
MPEG-1 Audio Layer 3. Using MP3, you can achieve a data
reduction of about 1:10.
• MPEG Layer-3 audio coding technology licensed from
Fraunhofer IIS and Thomson.
WMA(Windows Media Audio)
WMA is an audio data compression format developed by
Microsoft Corporation. WMA file size is smaller than that of
MP3.
JPEG(Joint Photographic Experts Group)
JPEG is a papular file format for still image compression and
storage.
There are three sub-types of the JPEG format as follows.
• baseline JPEG : used for digital cameras, the web, etc.
• progressive JPEG : used for the web.
• lossless JPEG : an old type, rarely used now.
DviX
DivX is MPEG-4 based video compression technology
developed by DivXNetworks, Inc. It can shrink digital video
to size small enough to be transported over the internet,
while maintaining high visual quality.
• DivX, DivX Certified, and associated logos are trademarks
of DivXNetworks, Inc. and are used under license.
Definition Of Terms
