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346 Chapter 19: Video Post-Production
An Image Input Opt ions dialog (p age 3–342)
appears, identical to the dialog you use with
Image Input events.
If the m ask is animated, you also use this dialog
to specify its time range and playback speed.
Inter face
Layer Plug-In group
Label—Lets you edit the event name.
Layer List—Selectsthecompositor3dsMaxuses
for layering the rendered images in the queue.
Alpha is the default compositor, but you can also
choose from any others you hav e installed.
AdobePremiereTransition—Lets you create a
transition between Adobe Premiere video events.
Alpha Compositor—Composites the two images
using the
alpha channel (page 3–1001) of the
foreground image. The background image appears
in areas where the foreground image’s alpha
channel is transparent.
Cr o s s Fa d e —Composites the two images over
time, cross fading from the background image
to the foreground image. The rate of the cross
fade is deter mined by the length of the Cross Fade
Transition filter’s time range.
Pseudo Alph a—Comp osites a foreground image
against the background by creating an alpha
channel for the foreground image based on the
foreground image’s upper-left-corner pixel. All
pixelsintheforegroundimagethatusethiscolor
become transparent. Because only one pixel color
becomestransparent,edgesoftheopaqueareasin
the foreground image are aliased. Use this method
when the foreground image is a bitmap whose
format does not have an alpha channel.
Simpl e Additiv e Compositor —Composites the two
images using the foreground image’s intensity
(HSV value) to determine transparency. Areas
of f u ll intensity (255) are opaque. Areas of zero
intensity are transparent. Areas with intermediate
transparency are translucent.
Simple Wipe—Reveals or erases the foreground
image with a wipe transition. Unlike the
Wipe
Filter (page 3–360)
event, Wipe Layer moves the
image, sliding it in or out. Under Setup, you can
choosethedirectionofthewipeandwhetherto
reveal the foreground image (Push) or erase it
(Pop).
About—Provides version/source information
specific to the
plug-in (page 3–1089) .
Setup—Displays a setup dialog specific to the
plug-in. Some plug-ins may not use this button.
Mask group
Chan n e l s—If you are using a bitmap as the mask
file, you can use the Alpha channel, the Red,
Green, or Blue channel, Luminance, Z-Buffer,
Material Effects ID, or Object ID.
Files—Select a file to use as a mask. The name of
the selec ted file appears above the Files button.