Apple Final Cut Pro HD (4.5): New Features - Manual (Page 116)

116 Appendix High Definition Video Fundamentals
DVCPRO HD Specifications
DVCPRO HD is an extension of the DVCPRO (25) and DVCPRO 50 formats.
DVCPRO HD Tape Format
The data rate of DVCPRO HD is fixed at 100 megabits per second, or 12.5 megabytes per
second. The tape speed of DVCPRO HD is double the DVCPRO 50 tape speed and four
times the speed of DVCPRO.
DVCPRO, DVCPRO 50, and DVCPRO HD use a metal particle (MP) tape formulation.
Some tape sizes are supported only by decks and not by cameras. As the data rate is
doubled from 25 to 50 to 100 Mbps, the recording time is halved in each case.
Therefore, a 63-minute DVCPRO tape stores only 31 minutes of DVCPRO 50 footage, or
15 minutes of DVCPRO HD.
Aspect Ratio
Regardless of the specific resolution used, DVCPRO HD always captures and displays an
image with an aspect ratio of 16 x 9 (or 1.78).
Warning: DV (sometimes referred to as miniDV) and DVCAM use a metal evaporated (ME)
tape formula while DVCPRO uses metal particle tape. When in doubt, always use cassettes
explicitly manufactured for the camera or VTR you intend to use the tapes with.
Widescreen cinema
2.35:1
Standard cinema
1.85:1
High definition
1.78:1
(16 x 9)
DVCPRO HD
Standard
definition
1.33:1
(4 x 3)
UP01022.Book Page 116 Tuesday, March 23, 2004 7:32 PM