Crops/reformats to format, optionally grows AdjBBox pixels, then CopyBBox so the data window matches.
Fill Bounding Box Crops to input width/height with reformat, can AdjBBox by N pixels, Merges for bbox policy, and CopyBBox back onto the original so downstream nodes see a full/expanded box.
Use after tight crops, roto, or 3D renders whose bbox is smaller than format and breaks filters that assume a full frame.
set cut_paste_input [stack 0]
version 12.1 v4
push $cut_paste_input
Group {
name FillBBox
tile_color 0x421010ff
selected true
xpos -1091
ypos 285
addUserKnob {20 User l FillBBox}
addUserKnob {41 numpixels l "Add Pixels" T AdjBBox1.numpixels}
addUserKnob {41 bbox l "set bbox to " T Merge1.bbox}
addUserKnob {26 ""}
addUserKnob {26 lbl l "" +STARTLINE T "Fill BBox v1.0"}
addUserKnob {22 btn l DerekVFX.ca T "nuke.tcl('start', 'https://derekvfx.ca')" +STARTLINE}
}
Input {
inputs 0
name Input
xpos 447
ypos 61
}
set Nd8f2800 [stack 0]
Crop {
box {0 0 {input.width} {input.height}}
reformat true
crop false
name Crop1
xpos 600
ypos 92
}
AdjBBox {
numpixels 105
name AdjBBox1
label "\[value numpixels]"
xpos 592
ypos 127
}
push $Nd8f2800
Merge2 {
inputs 2
output none
name Merge1
xpos 558
ypos 192
}
push $Nd8f2800
CopyBBox {
inputs 2
name CopyBBox1
xpos 447
ypos 277
}
Output {
name Output1
xpos 447
ypos 1055
}
end_group