Apple Final Cut Express 4 User Manual
Page 241
Chapter 17
Working with HDV
241
IV
Scanning Methods
HDV can record either interlaced or progressive scan images, depending on the frame
size and format.
 1080i: Interlaced
 720p: Progressive
Color Recording Method
HDV records a 4:2:0 component (Y´C
B
C
R
) digital video signal. Each sample (pixel) has a
resolution of 8 bits.
Data Rate
The following table lists the data rates for HDV transcoded to the Apple Intermediate
Codec. DV data rates are included for comparison.
Note: Although audio is compressed on an HDV tape, Final Cut Express converts this
signal to an uncompressed format during capture. This means that the overall HDV
data rate on tape differs from the captured date rate.
Format
Native frame size
Data rate
DV NTSC
720 x 480
3.6 MB/sec.
(equivalent to 12 GB/hr.)
DV PAL
720 x 576
3.6 MB/sec.
(equivalent to 12 GB/hr.)
Apple Intermediate Codec
1
HDV 720p30
1280 x 720
7 MB/sec.
(equivalent to 25 GB/hr.)
Apple Intermediate Codec
1
HDV 1080i50
1440 x 1080
12 MB/sec.
(equivalent to 42 GB/hr.)
Apple Intermediate Codec
HDV 1080i60
1
1440 x 1080
14 MB/sec.
(equivalent to 49 GB/hr.)
1
Data rates for the Apple Intermediate Codec are variable; these figures are approximate and may vary according to
the complexity of your footage. Images with a lot of detail have a higher data rate, while images with less detail
have a lower data rate.