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(As of March 2000)
Video
Audio
Sub-picture
Data for control (Navigation pack)
Multiplexing type
2.3 Comparison between DVD-RAM and DVD-RW/R
In addition to DVD-RAM in rewritable DVDs, DVD-RW and DVD-R are also available.
The following table shows the differences in major specifications (Note 1) between these discs:
(As of April 2000,
investigated by Hitachi)
Capacity
(per side/both sides)
Laser wavelength (NA)
Write rate
Rewritable use
Cartridge
Video recording standard
8-cm standard
Major applications
Note 1:
The differences between media are shown: The drives of Hitachi and other companies and applied products also
have individual specifications.
Note 2:
There are two types of DVD-RAM: Disc used only while it is in cartridge (Type 1) and disc can be removed from
cartridge (Type2).
2.4 Available DVD- RAM Discs
There are two types of DVD-RAM disc: for video camera and for PCs. Be sure to use 8 cm DVD-RAM discs (1.4 GB on one
side, 2.8 GB on both sides) noted for video camera use (for AV) with this DVD video camera/recorder.
Most discs for video camera use (for AV) can be removed from their cartridges for recording. Some discs for PC, however,
cannot be removed from their cartridges, and some can be removed but recording cannot be made on them. For details, read
the instruction sheet provided with discs or consult the disc maker.
Examples of discs that cannot be used on this DVD video camera/recorder:
8 cm DVD-RAM discs for PC, CD, DVD-ROM, DVD-Video, MO, MD, iD, floppy disks,etc.
Coding format
Number of streams
Aspect ratio
Number of pixels (NTSC)
Still image data structure
Coding format
Number of streams
Number of channels per
stream
Coding format
Number of streams
Display control command
DVD-RAM (4.7GB)
4.7 GB/9.4 GB
650 nm (0.6)
2X
at least 100,000 times
Provided (Note 2)
Conforming
Provided
For PC/AV
DVD Video Recording
MPEG1/MPEG2
1 stream only
4 : 3 / 16 : 9
720 × 480, 704 × 480,
544 × 480, 480 × 480,
352 × 480, 352 × 240
I picture of one still
MPEG/Dolby AC3/Linear PCM
Up to 2
Mono/Stereo/Dual Mono/Multi
(up to 71 channels)
Run-length encoding
1 only
Sub-set of that at right
None
MPEG2 program stream
DVD-RW (4.7GB)
4.7 GB/-----
635 nm/650 nm (0.6)
1X
at least 1,000 times
None
Conforming
None
For AV
DVD Video (reference)
720 × 480, 704 × 480,
352 × 480, 352 × 240
Not defined
Up to 8
Mono/Stereo /Multi (up to 71
channels)
Up to 32
Full set
Provided (essential)
DVD-R (4.7GB)
4.7 GB/-----
635 nm (0.6)
1X
only once
None
Non-conforming
Provided
For authoring software
E1 - 3
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