NewTek TriCaster TCXD300, User Manual

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4.11 VIRTUAL INPUTS
Virtual Input buttons sit innocuously on TriCaster’s Switcher rows just like other video inputs,
but in fact they possess very powerful features. Virtual Inputs can be somewhat likened to the
M/E (Mix/Effect) rows of a traditional video switcher. They permit a composition to be prepared
from multiple sources (including an upstream keyer channel).
4.11.1 COMPOSING INPUTS A AND B
Let’s begin our examination by re-constituting our simple keyer setup above, but this time doing
so using a
Virtual Input .
1. Change the Switcher’s Program row selection to V1 .
2. Click the tab labeled V1 below the Switcher (to reveal the panel for Virtual Input 1 ).
3. Notice that the Sources portion of the Virtual Input panel is home to two source
selector buttons rows labeled Input A and Input B .
4. At the end of the previous section, we left the DDR with LiveMatte enabled. Click DDR
in the Input A row, designating it as the foreground stream for this Virtual Input .
Figure 63
5. Click Stills in the Input B row (Figure 63), designating that source as the background.
At this point, the display on Program Output should be identical to the simple ‘weather map’
setup we created in the previous section (Figure 61); remember that LiveMatte is already
enabled for the greenscreen shot from our previous exercise.