NewTek TriCaster 2 Elite (3 RU) - Manual (Page 168)

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The result on your Program monitor should look much like Figure 187; 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 suppression at the edges of the tracked
region. Using the size (etc.) parameters of the tracker, the region being tracked can be made slightly larger to
taste, to moderate this effect.
FIGURE 187
Now would be a good time to test the effect of the Scale , Rotation, and Aspect controls in the Tracker tab for
DDR 1 (remember you can double-click the DDR 1 monitor to open this panel).
U TILITIES
Effects can take other forms as well. We’ve looked at the Default effects group; now
let’s consider Utility effects.
If you were following along in the previous section, replace the current effect in M/E
1 with the Show Alpha effect from the Utilities group.
Applying this effect immediately causes the display on the
Program monitor to update, showing the content of the alpha
channel for input A ( I nput B is ignored).
The current input A source is keyed, so the effect displays black
on Program out wherever transparency exists in the foreground,
white for full opacity, and shades of gray for in-between blends.
With this in mind, it won’t be hard to guess what Show Inverse
Alpha does.
FIGURE 188
FIGURE 189