NewTek TriCaster 300 - Manual (Page 66)

Page | 50
Clicking a button in any row selects the active source for that row. Utility row selections serve
various special purposes that we’ll come to a bit later. Your Program and Preview row selections
determine the content of the BKGD (Background) video layer.
VIDEO LAYERS
TriCaster™ video output often consists of multiple sources of imagery, added together layer on
layer to form a composite. The Switcher and Transition controls allow you to manage these
video layers to show the viewer just what you want him to see.
The BKGD (Background) video layer constitutes the base of the video composition ultimately sent
to Program Output. Based on your Switcher operations, as many as three other primary video
layers may be superimposed above the BKGD layer on output:

The DSK 1 and DSK 2 video layers are most commonly used to apply graphics or titles to
the BKGD layer (DSK stands for ‘Down Stream Keyer’).

FTB (Fade to Black) constitutes a final video layer prior to output – one that can obscure
all others when called upon to do so. (FTB is less commonly used, and unlike the other
primary video layers, has no local transition controls - Figure 41).
As stated in the previous section, the Program and Preview row selections determine the content
of the BKGD (Background) video layer.
Figure 41
Three of the four primary
video layers – BKGD, DSK 1,
and DSK 2.