User Manual

Dissolve [DX]
Dissolve Node Introduction
The Dissolve node is typically used to mix two images together, providing a gradual transition
between two clips. A Background/Foreground slider controls the mix between the foreground
and background images. Dissolves are commonly used to transition between one clip and
another and are a very common effect in editing. However, you can also use the extreme left
and right positions of the Background/Foreground slider to switch between inputs. Unlike other
nodes in Fusion, the Dissolve node does not require you to connect an image to the
background but lets you output either the background or foreground according to the setting of
the Background/Foreground slider.
This quality makes it possible for you use the Dissolve node as an automatic layer switching
tool when connected to background and foreground clips with different durations. Simply
connect each clip to the background and foreground inputs, respectively, and set the
Background/Foreground slider to the input of shorter duration, to determine which is “on top.”
After the last frame of that clip has ended, the Dissolve node automatically switches to the clip
that’s connected to the other input.
Besides the default dissolve, the Gradient Wipe setting of the Operation menu allows you to
create arbitrary animated dissolve patterns based on the luminance of an image connected to
the optional Gradient Wipe input. You can use this capability with images of geometric shapes
or gradients of different kinds, movie clips of fire, water ripples, or rain, the Fast Noise node, or
even particle systems you create within the Fusion page to create a variety of unique and
creative transitions. Soft-edged effect masks may also be used to add to the possible effects.
Ultimately, animating the Background/Foreground control allows you to control the transition
that’s being used to switch from the foreground input to the background, or vice versa.
Inputs
The Dissolve node provides three image inputs, all of which are optional:
–
Background: The first of two images you want to switch between or mix. Unlike most
other nodes, it is unnecessary to connect the background input before connecting
the foreground input.
–
Foreground: The second of two images you want to switch between or mix.
TheDissolve node works best when both foreground and background inputs are
connected to images with the same resolution.
–
Gradient Map: (Optional) The Gradient Map is required only when Gradient Wipe is
selected.
Chapter – 86 Composite Nodes 1906