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DVD Video
This refers to a high-density optical disc on which
high-quality pictures and sound have been recorded
by means of digital signals. Incorporating a new video
compression technology (MPEG II) and high-density
recording technology. DVD Video enables esthetically
pleasing full-motion video to be recorded over long
periods of time (for instance, a whole movie can be
recorded).
DVD Video has a structure consisting of two 0.6 mm
thin discs which are adhered to each other. Since the
thinner the disc, the higher the density at which the
information can be recorded, a DVD Video has a
greater capacity than a single 1.2 mm thick disc.
Since the two thin discs are adhered to each other,
there is the potential to achieve double-sided play
sometime in the future for even longer duration play.
Title, Title number (DVD Video)
The title is the largest unit of the video/audio
recording in DVD Videos. Usually, the title
corresponds to a movie of video software or an album
(or a piece) of music software. Title numbers are
sequential numbers assigned to titles.
Chapter, Chapter number (DVD Video)
Chapters are divisions, which are smaller than the
titles, of the contents recorded on DVD Videos. Every
title is composed of more than one chapter. Chapter
numbers are the sequential numbers assigned to the
chapters in a DVD Video.
Folder (MP3 disc)
The folder is the largest unit of the contents recorded
on MP3 discs. Usually, the folder corresponds to an
album(or a piece) of music software.
Track / song number (CD, MP3 disc)
Track / song numbers are used to designate the
various sections of a disc.
• DVD Video structure
• CD structure
• MP3 disc structure
Aspect ratio (DVD Video)
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 Video)
Some DVD Videos 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 Video)
Some DVD Videos contains scenes which have shot
simultaneously from multiple camera angles. With
these discs, the same scene can be viewed from each
of these different angles.
Dolby Digital
Dolby Digital provides multichannel surround sound in
cinemas from 35 mm film and in the home from laser
discs, DVDs, and digital broadcast television, cable,
and satellite systems. It enables the transmission and
storage of up to five full-range audio channels, plus a
low-frequency effects channel(LFE), thus 5.1
channels, in less space than is required for just one
linear PCM-coded channel on a compact disc.
Dolby Pro Logic
Dolby Pro Logic decodes program material encoded in
Dolby Surround, and is built into virtually every home
theater audio system. Dolby Pro Logic reconstructs
the original four channels - left, center, right, and
surround - that were encoded onto the program
material’s stereo soundtracks.
Manufactured under license from Dolby Laboratories.
“Dolby”, “Pro Logic”, and the double-D symbol are
trademarks of Dolby Laboratories.
DTS (Digital Theater Systems)
DTS is a newly-developed surround system which can
handle more amount of data than Dolby Digital,
providing better audio quality. Though the number of
audio channels is 5.1 which is same as Dolby Digital,
discs bearing the
provides fat sound and
better signal-to-noise ratio, thanks to the lower audio
compression ratio format. It also provides wide
dynamic range and better separation, resulting in
magnificent sound.
“DTS” is a registered trademark of Digital Theater
Systems, Inc.
Title 1 Title 2
Chapter 1
Chapter 2 Chapter 1 Chapter 2Chapter 3
Track 1 Track 2 Track 3 Track 4
Folder Folder
Song 1
Song 2 Song 1 Song 2 Song 3Song 3