Grass Valley NewsEdit XT v.5.5 - Manual (Page 305)

Effect Paths
Digital News Production 303
Effect Paths
Each video effect you create has a path applied to it. The path determines how
the effect behaves from keyframe to keyframe. You can choose which path you
prefer for each effect; the path can only be applied to an entire effect, not a
specific keyframe or part of an effect. If you want to apply different paths to
specific keyframes, use the Path Control option.
The paths available in NewsEdit are:
• Hold — The effect characteristics hold for the duration of the keyframe and
then change instantaneously to the next keyframe. For example, the
image jumps from its current location in one keyframe to its new
location in the next keyframe instantly.
• Linear — The effect plays in a constant direction and at a constant rate of
speed from keyframe to keyframe. For example, the image moves
from one location to the next in a straight line at the same speed.
This is the default path.
• S-Linear — The effect plays in a constant direction but at a variable rate of
speed from keyframe to keyframe. For example, the image
moves from one location to the next in a straight line; it begins
slowly, speeds up, then slows down again as it approaches the
next keyframe. Because of the changing rate of speed, S-Linear
changes appear less abrupt than linear changes.
• Curve — The effect plays in a variable direction and at a variable rate of
speed, causing a rounded path through the keyframe. For example,
the image moves from one location to the next in a smoothly
curved line. The Curve path is the least abrupt type of path control;
both direction and rate of speed are kept smooth and steady in
appearance.
Hold Linear S-Linear
Keyframe
Constant
rate of
speed
Slow
Fast
Slow
Curve
Slow
Fast
Slow