4

Appendix A Video Formats 1081
XIII
Uncompressed High Definition Formats
HD requires extremely high data rates (around 1.4 Gbps). There are no camcorder
formats currently available for recording uncompressed HD video. High-capacity,
general-purpose digital tape formats like D-6 can be used in combination with camera
heads and digital telecine machines capable of outputting uncompressed RGB and
component HD video data. High-speed disk arrays can also be used to record
uncompressed HD video.
Data Rate Comparisons
The following table is useful when preparing to capture video to a particular codec on
your hard disk.
A Brief History of Film, Television, and Audio Formats
The timeline below helps to illustrate the constantly evolving list of media formats as
well as developmental peaks and valleys.
Format Typical data rate
OfflineRT (using Photo JPEG) Varies from 300–500 KB/sec.
25:1 compressed M-JPEG 1 MB/sec.
DV-25 3.6 MB/sec.
DVCPRO 50 7.2 MB/sec.
2:1 compressed M-JPEG 12 MB/sec.
Uncompressed SD video 24 MB/sec.
Uncompressed 8-bit 1080i
29.97 fps HD video
121.5 MB/sec.
Uncompressed 10-bit 1080i
29.97 fps HD video
182.3 MB/sec.
Year Event
1826 First photograph is taken.
1877 Thomas Edison makes the first sound recording of “Mary Had a
Little Lamb.”
1879 Thomas Edison invents commercially viable incandescent
light bulbs.
1888 Heinrich Hertz shows that electricity can travel through space and
that radio waves are physically identical to light.
1889 35 mm film is invented by splitting Eastman Kodak 70 mm in half
(1.33 aspect ratio).
1895 Marconi develops radio transmitter and receiver.