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Appendix
ID3 tag
This is a method of embedding track-related
information in an MP3 file. This embedded in-
formation can include the track title, the ar-
tist's name, the album title, the music genre,
the year of production, comments and other
data. The contents can be freely edited using
software with ID3 Tag editing functions.
Although the tags are restricted by the num-
ber of characters, the information can be
viewed when the track is played back.
ISO9660 format
This is the international standard for the for-
mat logic of DVD/CD-ROM folders and files.
For the ISO9660 format, there are regulations
for the following two levels:
! Level 1:
The file name is in 8.3 format (the name
consists of up to 8 characters, half-byte
English capital letters, half-byte numerals
and the "_" sign, with a file-extension of
three characters).
! Level 2:
The file name can have up to 31 characters
(including the separation mark "." and a file
extension). Each folder contains less than 8
hierarchies.
! Extended formats
Joliet:
File names can have up to 64 characters.
Romeo:
File names can have up to 128 characters.
JPEG
This stands for Joint Photographic Experts
Group, and is an international still image com-
pression standard.
MP3
MP3 is short for MPEG Audio Layer 3. It is an
audio compression standard established by a
working group (MPEG) of the ISO (Interna-
tional Standards Organization). MP3 is able to
compress audio data to about 1/10th the size
of a conventional disc.
MPEG
This stands for Moving Pictures Experts
Group, and is an international video image
compression standard.
Multi-angle
With regular TV programs, although multiple
cameras are used to simultaneously shoot
scenes, only images from one camera at a
time are transmitted to your TV. Some DVDs
feature scenes shot from multiple angles, let-
ting you choose your viewing angle as desired.
Multi-audio (Multilingual dialog)
Some videos feature dialog recorded in multi-
ple languages or audio recorded in multiple
tracks. For example, dialog in up to 8 lan-
guages can be recorded on a single DVD-Vi-
deo, letting you choose the language as
desired.
Multi-session
Multi-session is a recording method that al-
lows additional data to be recorded later.
When recording data on a CD-ROM, CD-R or
CD-RW, etc., all data from beginning to end is
treated as a single unit or session. Multi-ses-
sion is a method of recording more than 2 ses-
sions in one disc.
Multi-subtitle
For example, subtitles in up to 32 languages
can be recorded on a single DVD-Video, letting
you choose as desired.
Packet write
This is a general term for a method of writing
individual files to a CD-R, etc. whenever re-
quired, just as is done with files on floppy or
hard disks.
Appendix
207
En
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