Physical size of the DVD disk
Physical size of the DVD disk
The are two sizes of the DVD physical disk: 12 cm and 8 cm in diameter. The more popular
size is the 12 cm.
The following table shows the structure and measurement of the DVD disk:
#
1
2
3
4
Physical Structure
SS SL (Single Sided, Single Layer)
SS DL (Single Sided, Dual Layer)
DS SL (Dual Sided, Single Layer)
DD DL (Dual Sided, Dual Layer)
Capacity
(GBytes)
4.7
8.5
9.4
17
Record time
(minutes)
130
236
259
472
DVD Book Specification:
#
1
2
3
4
5
Book
A
B
C
D
E
Description
Read Only
Video
Audio
Write Once
Rewritable (RAM)
DVD-Video data can be categorized into two Presentations and Navigation.
Presentation data
Video data is encoded using either the MPEG2 or MPEG1 compression method.
Audio is stored in a LPCM, Dolby Digital (AC-3), or MPEG audio format.
Sub-picture is using the Run-length coded bitmap with 1 bps.
Navigation data
Start-up contains initial setup, language, and parental lock.
System Menu contains angle, audio and sub-picture.
Search Functions contain title search, chapter search, program search, and time search.
Navigation command includes branching, parameter setup, and computation.
DVD Player User's Manual
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