NewTek TriCaster Mini User Manual page 255

also see imagery from DDR 2 displayed wherever the (originally) orange card
appears in the frame.
What's happening is that the Advanced Tracking effect is applying the values from
the (DDR 1) Tracker for a secondary iteration of LiveMatte. Our LiveMatte settings
cut away the green, revealing the C layer behind. Afterward, the orange color
range is also keyed out, revealing the B source through the transparent region.
Up to this point, the effect takes advantage of the Tracker color values, applying them
as a secondary keyer – but we haven't yet done anything with the actual motion data
the Tracker is supplying to TriCaster. Let's do so now.
16. Click the Position button for input B to open the Position Panel for that layer.
17. Select DDR 1 in the From source menu.
FIGURE 228
18. Enable Follow Tracker (Figure 228).
The result on your Program monitor should look much like Figure 229; full motion
video appears wherever the orange card appears in the foreground clip. This is the
standard setup for the Advanced Tracking effect, though it's possible to use it in
different ways too.
Further Notes: Advanced Tracker 2 provides much improved compositing. (The original
effect is provided for legacy purposes, but might also produce a better result in rare cases
where a source has embedded transparency). Among other benefits, the newer effect
performs spill supression at the edges of the tracked region. Using the size (etc.)
parameters of the tracker, the area being tracked can be made slightly larger to taste, to
moderate this effect.
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