Matrox DigiSuite LX MAX, Руководство пользователя и инструкция по установке

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Glossary of terms
drop-frame time code
For NTSC video, time
code is normally produced by a generator that
counts at 30 frames per second. NTSC color
signals, however, actually have a display
frequency rate close to 29.97 frames per second.
Drop-frame time code compensates for this time
difference by dropping two frames from the count
every minute except for every tenth minute so that
the time code matches clock time.
DV Digital Video. A standard digital bit stream
and compression format (known as the Blue Book
standard) used to record video and audio onto a
digital tape. DV is intra-frame based, saving each
frame separately, and uses a fixed 5:1 compression
ratio to reduce the size of video files. DV’s data
rate is fixed at 25 Mb/sec (2.98 MB/sec). Video is
sampled at 4:1:1 for NTSC sources or 4:2:0 for
PAL sources.
See also DVCAM, DVCPRO,
DVCPRO50, and D-9.
DVCAM A professional variant of the DV
format developed by Sony that records a 15 micron
track on a metal evaporated (ME) tape at a data
rate of 25 Mb/sec (2.98 MB/sec). Video is sampled
at 4:1:1 for NTSC sources or 4:2:0 for PAL
sources.
DVCPRO A professional variant of the DV
format developed by Panasonic that records an 18
micron track on metal particle tape at a data rate of
25 Mb/sec (2.98 MB/sec). Video is sampled at
4:1:1 for both NTSC and PAL sources.
DVCPRO50 A professional variant of the DV
format developed by Panasonic that uses a data
rate of 50 Mb/sec (5.96 MB/sec), which is double
the data rate of most other DV formats. Video is
sampled at 4:2:2 for both NTSC and PAL sources
to give enhanced chroma resolution. It uses the
same type of tape as DVCPRO.
DVD Digital Versatile Disk or Digital Video
Disk. A type of disk that can hold from 4.7
gigabytes (GB) to 17 GB of information. The
greatest advantage that DVD has over CD is that it
can store video as well as audio and computer
data. For video storage, DVD uses MPEG-2
compression to provide better quality than
standard VHS.
DVE Digital Video Effect. Generally, an effect
that resizes and repositions a picture on the screen.
A DigiSuite 2D DVE is referred to as a “video
window.”
DVE move
Making a picture shrink, expand,
tumble, and/or move across the screen.
E
Edit Decision List (EDL)
A file containing a
list of edit decision statements used to create a
video production.
edit master
The first generation (original) of a
final edited tape.
EISA slot
Connection slot to a type of computer
expansion bus found in some computers. EISA is
an extended version of the standard ISA slot
design.
expansion slot Electrical connection slot
mounted on a computer’s motherboard (main
circuit board). It allows several peripheral devices
to be connected inside a computer.
F
fade to black
A transition commonly used to
signify the end of a scene, in which an image or
sound smoothly fades to a black screen or silence
(also called a fade-out transition). Similarly, you
could start a new scene with a fade up from black
(or fade-in) transition.
field One-half of the horizontal lines needed to
make a complete scan of an interlaced video
frame. In the NTSC system, two consecutive fields
of 262.5 lines each create a frame of 525 scan
lines. In the PAL system, two consecutive fields of
312.5 lines each create a frame of 625 scan lines.