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Silhouette Alpha
Silhouette Alpha is the reverse of the Stencil Alpha blend mode and is useful for cutting
holes in layers underneath.
Object used for silhouette
End resultObject underneath
Silhouette Luma
Silhouette Luma is the reverse of Stencil Luma.
Behind
The Behind blend mode forces the layer to appear behind all other layers and groups,
regardless of its position in the Layers list and Timeline.
If multiple layers or groups are set to Behind, they appear behind all other groups not
set to Behind, in the order in which they appear in the Layers list.
Alpha Add
The Alpha Add blend mode works similarly to the Add blend mode, but instead of adding
the color channels of overlapping layers, it adds their alpha channels together. Try using
this blend mode instead of Motion’s default method of alpha channel compositing for a
different treatment of overlapping areas of translucency.
Light Wrap
This mode takes bright areas from the background layer at the edge of the matte and
blurs them into the foreground layer.
This is intended to create a more organic, seamless composite, where light from the
background appears to bleed onto the foreground layer as would occur in a natural,
non-composited image. To adjust the parameters that affect the Light Wrap, such as the
Amount, Intensity, Opacity, and Mode, apply the Keyer filter and make those adjustments
in the Filters Inspector. For more information, see Keyer.
Note: Motion applies the Light Wrap effect at the end of the rendering process. When
you add other filters to the layer, such as color correction effects, they are rendered before
the Light Wrap.
310 Chapter 7 Basic Compositing