GRASS VALLEY INDIGO, User Manual

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48 INDIGO AV Mixer User Manual
Section 5 — Basic Operation
5.3 Video Processing
This section shows you how to make transitions, effect transitions, titles,
and chroma keys.
5.3.1 Transitions, Effects, and Keying
The INDIGO AV Mixer provides various ways to manipulate and mix
video signals. The most common ways are described in the following.
The first part of this section provides some theory and basic information
about transitions and keying.
The second part provides examples for:
• Making a background transition
• Making a title
• Making a chroma key
• Making an effect transition
• Making a PiP (Picture in Picture)
Transitions
A transition is a change from one image to another. It can be applied to the
entire picture, or to only the background or keyed elements of the picture.
It may include multiple elements.
The
INDIGO AV Mixer
supports the following types of transitions:
• Cut
• Mix
• Wipe
Cut
A cut is an instantaneous switch from one image to another (between suc-
cessive video fields or frames). The simplest type is a hot cut, accom-
plished by selecting a different source on a bus feeding an M/E output.
This only changes that bus’ contribution to the output, and does not
change what elements may be involved in the output (the same buses are
involved).