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Applying this effect immediately causes the display on the Program monitor to update, showing the content
of the alpha channel for input A (Input 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. In contrast, the Show Color effect in this group passes the full
color output of LiveMatte prior to being multiplied by the alpha
channel.
(It might seem as though this would be identical to the original
source, but you may notice subtle differences. This is because of the
Spill Suppression processing.)
Let’s look at another of the effects in the Utilities group, Color Correction. Replace the current effect with the
Color Correction effect. You’ll notice that M/E 1’s output on the Program monitor is now rendered in
monochromatic grayscale. Drag the T-Bar down to affect the M/E’s color saturation. Click the mouse on the
Position button below the T-Bar and drag to modify Hue.
Finally, the Make Legal effect ensures the output of an M/E is within broadcast signal tolerances.
3D
The Anaglyph (Red, Cyan) effect found in the 3D category is a special purpose tool.
The anaglyph method of displaying 3D imagery depends on stereo video inputs that
are filtered and composited into a single output stream.
In turn, this combined stream resolves into 3D when viewed through special glasses
with red and cyan (blue-green) filters for left and right eyes respectively.
TriCaster provides easy access to anaglyphic technology by means of the Anaglyph effect. The effect combines
2 video inputs selected in an M/E. 3D output can then be switched easily like any other source. No complex
configuration steps or tricky control surface operations are required.
PHOTOSHOP BLEND
The effects in the Photoshop Blend folder apply well-known blending modes to the A layer in the M/E as
these are blended with the B layer. The resulting compositions can serve many purposes, such as adding
animated ‘bokeh’ style overlays using DDR clips or adding interest to still overlays such as vignettes or titles.
SECTION 14.6 VIRTUAL SETS
We’ve considered TriCaster’s Default and Utility effects. Let’s move on to a more glamorous species, the
virtual set, presented in TriCaster as LiveSet™ effects.
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