|
FORMAT
|
DVPRO-HD
|
VHS
|
Super
VHS
|
Video
8 & Hi 8
|
DVD-Video
|
Signal
System |
digital
8-bit
Y:74 MHZ
PB/PR:37 MHZ
component
|
analogue
composite y/c
(colour under)
|
analogue
composite y/c
(colour under)
|
analogue
composite y/c
(colour under)
|
digital
MPEG-2 (VBR)
component
|
| Scan |
helical
|
helical
|
helical
|
helical
|
helical
|
| Number
of heads |
n/a
|
2
(can be more for
slow motion etc)
|
2
(can be more for
slow motion etc)
|
2
|
1
|
Tape-to-head
speed |
n/a
|
4.85
m/s
|
4.85
m/s
|
3.12
m/s
|
ref.
scan velocity
3.49 m/s (SL)
3.84 m/s (DL)
|
| Tape
Type |
metal
particle
|
cobalt
modified oxide
or chromium
oxide
|
cobalt
modified oxide
|
metal
particle
or metal
evaporated
|
n/a
|
| Taoe
Width |
8.35
mm
1/4 inch
|
12.65
mm
1/2 inch
|
12.65
mm
1/2 inch
|
8
mm
|
12
cm
diameter disc
|
| Tape
Coercivity |
2300
Oe
|
650
Oe
|
850
Oe
|
1500
Oe
950 Oe (ME)
& 1000 Oe (ME)
for Hi 8
|
n/a
|
| Tape
Consumption |
135.28
mm/s
(1080i)
|
23.39
mm/s
linear
or 0.018 m
|
n/a
|
n/a
|
max
rev/s 25.5
min revs/s 10.5
clockwise
|
| Recording
Time |
to
46 min
|
to
240 min
(480 on
long play)
|
to
180 (std)
|
to
90 min
|
single
side to
133 min, dual
layer to 240 min
|
Input
Data Rate/
Sync Tip
Frequency |
100Mbit/s
video
|
3.8
MHz
|
3.8
MHz
|
3.8
MHz
|
average
4.7 Mbits/s
video max
9.8 Mbits/s data
rate 10.08 Mbits/s
|
Packing
Density/
Peak White |
n/a
|
4.8
MHz
|
7.0
MHz
|
5.4
MHz and
7.7 MHz for Hi 8
|
n/a
|
| Compression |
Interframe
DCT 6:1
|
not
compressed
|
not
compressed
|
not
compressed
|
usually
MPEG-2
|
Shortest
Wavelength |
n/a
|
0.78
um
|
0.63
um
|
0.58
um and
0.37 um for Hi 8
|
n/a
|
| Applications |
HDTV,
E cinema
|
domestic
|
corporate,
industrial and
off-line editing
|
domestic
and
industrial plus corporate & off-line
editing for Hi 8
|
domestic,
corporate,
industrial and
off-line
post-production
|
