GRASS VALLEY INDIGO, User Manual

Page: 49 / 174

INDIGO AV Mixer User Manual 49
Video Processing
The INDIGO AV Mixer also provides cut transitions, where the elements
involved in a mixed output can be changed instantaneously. Different
buses can be included or excluded, causing changes in the resulting com-
posite image. Background cut transitions on the M/E are first selected on
the Background Preset bus to allow the upcoming picture to be previewed
before it is cut “On Air”.
Mix
A mix is a transition from one picture to another where the new picture
fades in as the existing picture fades out. During a standard mix transition,
a superimposition of both pictures, each at a lower intensity, is visible.
The INDIGO AV Mixer allows mixing from one background to another
and to mix up to two separate keys on or off over a background. Back-
ground and key mixes can be done separately or simultaneously.
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, keys, or both simultaneously. A wipe tran-
sition shape can be selected from a variety of patterns. These patterns can
be adjusted in several ways (for example, the edge attributes).
Fade to Black (FTB)
Fade to Black is a special type of transition where the picture transitions to
black and then out of black to the new picture. Fade to Black actually
involves two transitions: one to black and one from black. Therefore, it
requires two operator commands to complete. The entire picture goes to
black even if all the transition elements involved in the picture were not
selected.