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62 Chapter 2 Working with DVCPRO HD
Scanning Method
DVCPRO HD can record either interlaced or progressive scan images, depending on the
frame size and format.
 1080 lines: Interlaced or progressive (via advanced pull-down)
 720 lines: Progressive only
Color Recording Method
DVCPRO HD records a 4:2:2 Y´C
B
C
R
(component) digital video signal. Each sample (pixel)
has a native resolution of 8 bits. FireWire transfers color natively at 8-bit color depth,
and HD SDI transfers each color sample as a 10-bit value.
Data Rate
The data rate of DVCPRO HD on tape is fixed at 100 Mbps, which is double the
DVCPRO 50 data rate and four times the rate of DVCPRO.
The table below compares the captured data rates for DVCPRO HD formats. These data
rates show video only.
The actual disk space used during capture will vary slightly depending on the number
of audio channels captured. Each captured audio track adds an additional 0.34 MB/sec.
Because DVCPRO HD is compressed, an internal 7200 rpm parallel or serial ATA drive is
sufficient for capturing DVCPRO HD footage. FireWire drives are often sufficient as well.
Format Recorded data rate (Mbps) Captured data rate (MB/sec.)
1080i60 100 Mbps 14.4 MB/sec.
1080i50 100 Mbps 14.4 MB/sec.
720p60 100 Mbps 14.4 MB/sec.
720p50 100 Mbps 14.4 MB/sec.
720pN30 50 Mbps 7.2 MB/sec.
720pN25 50 Mbps 7.2 MB/sec.
720pN24 40 Mbps 5.76 MB/sec.