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14
Preliminary knowledge
XV-501BK [J]
LET0145-001B
Disc construction
In general, a disc comprises of “units” which separate recorded audio and/or
video materials.
In the case of a DVD disc, “titles” and “chapters” are the “units.” a disc
comprises “titles,” and each title may be divided into some “chapters.” Each title
has an independent content, while each chapter in the same title has continuity.
For example, if a disc contains some movies, each movie may have its own title
number, and each movie may be divided into some chapters. In a karaoke disc,
each song usually has its own title number and does not have chapters.
In the case of an audio or video CD, “tracks” are the “units”. Each song usually
has a track number. Also, some track may be divided into “indexes”.
Each “unit” described above has a continuous number, which helps you to find
the desired position in a disc.
(Example: DVD disc)
(Example: audio CD/video CD)
Chapter 1 Chapter 2 Chapter 3 Chapter 1 Chapter 2
Title 1 Title 2
Track 1 Track 2 Track 3 Track 4
In the case of a video CD with PBC (Playback Control) function, ,there is another
“unit” called “scene” in addition to “tracks”. Each menu screen, motion or still
picture is an independent scene. Each “scene” also has a continuous number