Matrox DigiSuite LE, Installation Manual, Page: 123 / 140

111
Glossary of terms
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.
filled key
A key effect in which the key source
image is different from the foreground image.
Areas not keyed (that is, not made transparent) in
the key source image are filled with the
corresponding areas of the foreground image.
Contrast with self-key.
FireWire
Apple computer’s original
implementation of the technology that would be
standardized as IEEE-1394 in 1995.
frame
A single video image. An interlaced
video frame is comprised of two consecutive fields
(the odd and even fields).
G
graphics overlay
Text or a graphics image
that’s superimposed on video.
genlock
The process of synchronizing the
timing between different video signals by
generating a new video signal that is time-locked
to the sync of the original signals. Genlock devices
enable computer text and graphics to be
superimposed onto video. See also blackburst.
GOP
Group of Pictures. The sequence of I, B,
and P-frames produced during MPEG or MPEG-2
IBP compression. This sequence of frames
contains all of the information required to
reproduce a complete video segment. The longer
the GOP, the less editable it is.
GPI
General Purpose Interface. An interface that
controls an external device through a remote data
signal. See also GPI trigger.
GPI trigger
The signal sent by a GPI that
instructs an external device to execute a particular
command, such as to start or stop playback of a
video effect.
H
hard key
A key effect in which areas of the
keyed image are either completely transparent or
completely opaque, creating a hard edge between
the keyed image and background image. See also
soft key.
hardware-accelerated effect
See realtime
effect.
host bus
Computer system bus to which a
DigiSuite card is connected by insertion in the
appropriate slot. This will be either a PCI, an
EISA, or an ISA bus.
hue
The tint or tone of a color. For example, the
difference between the color green and red is its
hue.