Nuke Tips – Mixing in Nuke

Most nodes in Nuke have the mix function at the bottom of the node properties.

It behaves similarly to the opacity function in Photoshop and After Effects so if you ever need to control the amount of blending a node does, this is one of the method to do so.

You can also animate the mix value to create a transition effect like in the sample script below (it is a simple fade in over time):

set cut_paste_input [stack 0]
version 8.0 v5
ColorWheel {
inputs 0
gamma 0.45
name ColorWheel1
selected true
xpos -3059
ypos -1913
}
CheckerBoard2 {
inputs 0
name CheckerBoard1
selected true
xpos -2936
ypos -1997
}
Merge2 {
inputs 2
mix {{curve x10 0 x80 1}}
name Merge10
selected true
xpos -2936
ypos -1889
}
FrameRange {
last_frame 100
time ""
name FrameRange1
selected true
xpos -2936
ypos -1826
}