Grass Valley 1200 Operation Manual - Manual (Page 22)

2-4
Section 2— Startup
Transition
A transition is a change from one video picture or to another. The
Model 1200 provides three methods for making video transitions:
a cut, a mix, and a wipe.
Cut Transition
A cut is an instantaneous switch from one picture to another. A
background cut, for example, switches the Program (on air)
output of the switcher instantly from the picture selected on the
Program bus to the picture selected on the Preset bus. A cut can
also be used to switch a key on or off air instantaneously.
Mix Transition
A mix is a transition from one picture to another where the new
picture mixes into and then replaces the picture that was already
on air (Figure 2-1). The Model 1200 allows you to mix from one
background picture to another or to mix up to three separate key
layers on or off over a background. Background and effects key
mixes can be done separately or simultaneously.
Figure 2-1. A Mix Transition
Ending Video
Mix in Progress
Starting Video