Grass Valley Kalypso User Manual V.15.0 - Manual (Page 77)

Kalypso — User Manual 77
Transitions
Wipe
A wipe is a transition from one picture to another in which the edge of a
shape moves across the screen, revealing the new picture. Wipe transitions
can be applied to backgrounds, to keys, or to both simultaneously. A wipe
transition shape can be selected from a variety of patterns, and these pat-
terns can be adjusted in several ways (position, aspect ratios, edge attri-
butes, etc.).
Each Kalypso M/E has two separate wipe systems, each of which can be
assigned a different wipe pattern and be adjusted independently. These
systems can each use one of the two available complex wipe pattern gener-
ators with advanced capabilities. It is also possible to combine these wipes
to create extremely complicated wipe transition shapes, and generally this
is used only by advanced operators. Utility bus video signals can also be
used to generate a custom pattern for a wipe transition or other purposes.
Other Wipe Pattern Generator Uses
Wipe pattern generator circuitry can be used for purposes that do not
involve transitions. Each Kalypso M/E has the two complex wipe pattern
generators described above, and each of its four Keyers also has a simple
pattern generator and a box pattern generator, making a total of six. These
pattern generators can also be used for Preset Pattern, Masking, and Matte
Washes.
Preset Black
Preset Black is a special type of transition, where the picture transitions to
black, and then transitions out of black to the new picture. Preset Black is
really two transitions, one to and one from black, and so requires two oper-
ator commands to complete. Preset Black can be used with any transition
type (cut, mix, or wipe). The entire picture goes to black, even if all the tran-
sition elements involved in the picture were not selected.
Transition Rate
Cut transitions are instantaneous, but mix and wipe transitions have dura-
tions. Transition durations can be set in advance to a specific transition rate,
and be initiated by pressing a button the control panel. It is also possible to
manually control transitions using a lever arm.
On the Kalypso system, one transition rate can be assigned to the main
transition of each M/E. This type of transition can be controlled by that
M/E’s lever arm. Each of the four keyers on each M/E can also be assigned
its own transition rate, initiated with a separate Key Mix button on that
M/E.