About DVDs/CDs (continued)
Disc structure
DVD VIDEO/DVD VR
A DVD VIDEO consists of “titles” and each title may be divided into “chapters”.
A DVD VR consists of “original programs” or “play lists” and each original program/play list may be divided into “chapters”.
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Title 1/Original program 1/
Play list 1
Title 2/Original
program 2/Play list 2
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 playback (A page 37).
Group 1
Group 2
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Track 2
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 |
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Track 3 | Track 4 | Track 5 |
MP3/WMA/JPEG/ASF/DivX/MPEG1/MPEG2 discs
On an MP3/WMA/JPEG/ASF/DivX/MPEG1/ MPEG2 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 system simplifies the hierarchical construction of a disc and manages folders by “groups”.
Group 1
Group 2
Track 1/ |
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File 1 |
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This system can recognize up to 4 000 tracks/files in a disc. Also, the system can recognize up to 150 tracks/files per group and up to 99 groups in a disc. Since the system ignores tracks/files with numbers exceeding 150 and groups with numbers exceeding 99, these cannot be played back.
•If there is any type of files other than MP3/WMA/ JPEG/ASF/DivX/MPEG1/MPEG2 files in a folder, those files are also counted in the total file number.
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