Disc Structure - JVC NX-DV3 Instructions Manual

(Continued)
Notes on Operation
About MP3/WMA/JPEG discs
Playable MP3/WMA/JPEG discs and files
• Discs recorded in the ISO 9660 format are play-
able (except discs recorded in the "packet write"
format (UDF format)).
• Discs recorded in the multi-session format are
also playable.
• Files with an extension of ".mp3", ".wma", ".jpg"
or ".jpeg" (extensions with uppercase and lower-
case letters mixed are also acceptable) are play-
able.
Notes on MP3/WMA/JPEG discs and files
• A disc may not be played back, or reading it may
take a long time depending on its recording con-
ditions or properties.
• The time needed for reading varies with the num-
ber of groups or tracks (files) recorded on the disc.
• If a character other than single byte English
characters is used in the file name of an MP3/
WMA/JPEG file, the track/file name will not be
displayed correctly.
• The order of tracks/groups displayed on the
MP3/WMA Control screen, and the order of files/
groups displayed on the JPEG Control screen
may be different from that of files/folders dis-
played on PC's monitor screen.
• In the case of MP3/WMA discs, since groups/
tracks are played back in alphabetical order, an
off-the-shelf MP3/WMA disc may be played back
in an order different from that indicated on the
label attached to the disc.
• Playing back an MP3/WMA file including a still
image may take a long time. The elapsed time is
not displayed until playing back starts. If playing
back starts, the elapsed time may not be dis-
played correctly.
• For an MP3/WMA file, a disc with a sampling fre-
quency of 44.1 kHz and transmission rate of 128
kbps is recommended.
• This product is not compatible with MP3i or
MP3PRO.
• This product can play back a baseline JPEG file,
excluding monochromatic JPEG files.
• This product can play back JPEG data taken with a
digital camera conforming to the DCF (Design
Rule for Camera File System) standard (when a
function is applied such as the automatic rotation
function of a digital camera, data goes beyond the
DCF standard, so the image may not be dis-
played).
• If data has been processed, edited and restored
with PC image editing software, the data may
not be displayed.
• This product cannot play back animations such
as MOTION JPEG, or still pictures (TIFF etc.)
other than JPEG, and image data with sound.
• The resolution of 640 x 480 pixels is recom-
mended for JPEG files. If a file has been
recorded at a resolution of more than 640 x 480
pixels, display may take a long time. An image
with a resolution of more than 8192 x 7680 pix-
els cannot be displayed.
• Files recorded on DVD-R/RW discs cannot be
played back.
5

Disc Structure

DVD VIDEO
A DVD VIDEO consists of "titles" and each title
may be divided into "chapters".
Title 1
Chapter 1 Chapter 2 Chapter 3 Chapter 1 Chapter 2
DVD AUDIO
A DVD AUDIO consists of "groups" and each
group may be divided into "tracks".
Some discs include a "bonus group" that requires
a password for playing (
Group 1
Track 1 Track 2 Track 3
VCD/SVCD/CD
VCD, SVCD and CD consist of "tracks".
In general, each track has its own track number.
(On some discs, each track may also be further
divided by indexes.)
Track 1 Track 2 Track 3
MP3/WMA [JPEG] discs
On an MP3/WMA [JPEG] disc, each still picture
(material) is recorded as a track [file]. Tracks
[Files] are usually grouped into a folder. Folders
can also include other folders, creating hierarchical
folder layers.
This unit simplifies the hierarchical construction of
a disc and manages folders by "groups".
Up to 99 groups
Group 1
Track 1 Track 2
Group 3
[File 1] [File 2]
Up to 150 files
This product can recognize up to 1000 tracks [files]
in a disc. Also, the product can recognize up to
150 tracks [files] per group and up to 99 groups in
a disc. Since the unit ignores the tracks [files]
whose numbers are exceeding 150 and the groups
whose numbers are exceeding 99, they cannot be
played back.
• If there is any type of files other than MP3/WMA
[JPEG] files in a disc, those tracks [files] are also
counted in the total file number.
Introduction
Title 2
page 31).
Group 2
Track 1 Track 2
Track 4 Track 5
Group 2
Group 4 Group 5