User guide

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Glossary of terms
R
realtime effect An effect that is played
back instantly, without having to be rendered
by an editing program.
render To compute an image or effect
using a nonlinear editing, compositing, or
animation program. The result is generally
saved in a file on the computer. Also called
compile.
RGB parade A specialized scope that
displays the red, green, and blue components
of a video signal.
RGB video A component video signal that
uses three signals to carry the separate Red,
Green, and Blue channels of colored images.
roll 1. Vertical movement of text across the
screen. Also called scroll. See also crawl.
2. Unwanted vertical roll of a video image,
indicating unstable sync.
RS-232 A non-differential serial data
transmission standard used for computer
connections. See also serial control.
RS-422 A differential serial data
transmission standard that is often used for
linking video production equipment (VTRs,
mixers, etc.). Because this standard is
differential, RS-422 connections are less
subject to interference and noise than RS-232
connections. See also serial control.
S
saturation A measure of the depth of a
color. Fully saturated colors are vivid, while
colors that lack saturation look washed out or
faded.
scroll See roll (1).
SECAM Séquentiel Couleur Avec Mémoire
(sequential color with memory). A color
television system developed in France and the
former USSR. It uses a composite interlaced
display comprised of 625 scan lines per
frame, refreshed at a rate of 25 frames per
second. The color difference signals are
transmitted sequentially on alternate lines. On
Matrox RT.X100 Xtreme, SECAM can be
used for video input only.
serial control A method of remotely
controlling a device via a data line. The
control data is transmitted in serial form (that
is, one bit after another), such as for RS-232
and RS-422 connections.
setup See black level.
soft wipe A split screen or wipe effect
with a soft border or edge where the two
images join.
spatial redundancy reduction See
intra-frame compression.
sphere effect A Matrox effect that
morphs an image into spheres with shadow
and highlight.
spline interpolation One of the two
types of interpolation that can be set
between consecutive keyframes using the
Matrox realtime plug-in. Spline interpolation
provides a smooth transition based on the
settings of all keyframes. See also linear
interpolation.
striping a tape Preparing a tape for
editing by recording continuous control track,
time code, and a video signal (such as black
or color bars).
super See graphics overlay.
super black Video that is darker than the
standard black level. See also super white.
super white Video that is brighter than the
standard white level. See also super black.
SVCD Super Video CD. A standard for
storing video and audio on a CD that provides
better video quality than VCD and standard
VHS. Video is compressed using MPEG-2 at
2500 Kbps, and audio is compressed as
MPEG-1, layer II, at 224 Kbps. An SVCD