NewTek TriCaster 850 User Manual page 146

Let's try to clarify all of this by considering an example. For an NTSC 1080i session, you can select
any of the following output connection and format conbminations:

1080i (SDI, Component)

1080/30p (SDI, Component)

720p (SDI, Component)

720/30p (SDI, Component)
AUDIO SOURCE
Figure 131
OUTPUT ALPHA MATTE
T C EXTREME™
RI ASTER
Figure 132
Aux options for TriCaster EXTREME systems include a switch labeled Output Alpha Matte. This
feature can be used independently, or complement the Act as Alpha option (discussed in Section
7.2.2).
An alpha matte can be automatically derived from any suitable source. It might be the matte
from a LiveMatte keyer effect, allowing Aux output to support downstream compositing of the
full color source; or it could be drawn from the Title player; or even a pass-through from an
upstream alpha channel source.
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The audio options portion of the Aux control group allows you to
choose which Audio accompanies the Aux video output in two
situations. Firstly, this setting determines which audio stream is
captured to a file by TriCaster's Record feature when it is configured to
record Aux. Additionally, it governs the embedded audio
accompanying the Aux row's SDI video output.

480i, 16:9 (SDI, Component) 480i, 16:9 (SDI,
Y/C + Composite)

480i, 4:3 (SDI, Component)

480i, 4:3 (SDI, Y/C + Composite)