NewTek TriCaster 40 - Manual (Page 16)

14
Using LiveMatte is easy. Click on the Pick Color
button in the Matte section of the panel, and keep
the mouse button depressed.
Drag the eye-dropper pointer over the green
background in the DDR’s monitor, and then
release it. This establishes the primary key Color, and turns the Enable
LiveMatte switch on.
Adjust the Tolerance slider value higher or lower to include more or less of
the key color in the matte (transparent region).
The Smoothness control lets you blend the
foreground smoothly into the transparent
background.
When overlaying the keyed source on another
image, this helps produce a seamless composition.
The Spill Suppression controls work in similar fashion, but operate
on key color that is unintentionally reflected or ‘spilled’ onto the
foreground subject. (It’s very common for a little green spill to occur on the
shoulders of a person in a greenscreen shot, for example.)
It is also very common for a greenscreen shot to have unintentional inclusions that remain after the base
chromakey process is applied, but which need to be removed along with the background. Common examples
include microphones or lighting fixtures dangling from above, or perhaps a harsh crease, blemish or tear in the
background screen.
The Crop tools in this tab can be used to remove such unwanted ‘garbage’ from the scene, or for other creative
purposes. The four numeric controls in this group allow you to define independent margins for the frame.
Simply drag the mouse left or right on the number fields to adjust them, or double-click the field to type a new
value.
Notice that enabling Proc Amp, LiveMatte, or Crop settings for any source results in an
indicator being illuminated in the titlebar of its monitor. Click these ‘lights’ to toggle the
feature on or off without opening the larger configuration panel.
Configure all connected external video sources in this manner. Afterward, you should be able to view them on
their respective input monitors.
Figure 13
Figure 11
Figure 12