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Viewer Input

ToolSets / Utility

Utility

2026-09-07

ToolSets/utility/VIEWER_INPUT.nk

utility

viewer

colorspace

boost

HSV

HSL

timecode

inspect

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Viewer utility with boost, HSV, and HSL modes plus an optional timecode overlay from Read1 metadata.

VIEWER_INPUT is a viewer-side utility group for inspecting a stream in boost, HSV, or HSL. Mode switches between a gain boost path, an HSV colorspace conversion, and an HSL colorspace conversion.

In boost mode, a ColorCorrect applies fixed gain and a Merge (copy) blends that result over the input. Mix exposes Merge mix so you can dial how much boost you see. HSV and HSL modes route through Colorspace nodes set to those outputs for channel-style viewing.

When tc is on, a Text overlay pulls input/timecode from Read1 metadata and composites it on the viewed image. Turn tc off to disable the overlay. Use it on Viewer input when you need a quick lift or a colorspace read without building the same nodes by hand.

Script code

set cut_paste_input [stack 0]
version 9.0 v7
push $cut_paste_input
Group {
 name VIEWER_INPUT
 tile_color 0xff0000ff
 selected true
 xpos -271
 ypos 291
 addUserKnob {20 User l viewerInput}
 addUserKnob {6 tc +STARTLINE}
 tc true
 addUserKnob {4 setMode l mode M {boost HSV HSL}}
 addUserKnob {41 mix T Merge1.mix}
 addUserKnob {26 ""}
 addUserKnob {26 lbl l "" +STARTLINE T "viewer input v1.9"}
}
 Input {
  inputs 0
  name Input1
  xpos -420
  ypos 472
 }
set N49598400 [stack 0]
 Colorspace {
  colorspace_out HSV
  name Colorspace2
  xpos -110
  ypos 613
 }
push $N49598400
 Colorspace {
  colorspace_out HSL
  name Colorspace1
  xpos -415
  ypos 624
 }
push $N49598400
 Dot {
  name Dot1
  xpos -507
  ypos 555
 }
set N495d9800 [stack 0]
 ColorCorrect {
  gain 15
  name ColorCorrect1
  xpos -653
  ypos 627
 }
push $N495d9800
 Merge2 {
  inputs 2
  operation copy
  output {rgba.red rgba.green rgba.blue -rgba.alpha}
  mix 0
  name Merge1
  xpos -541
  ypos 700
 }
 Switch {
  inputs 3
  which {{parent.setMode}}
  name Switch1
  xpos -415
  ypos 803
 }
 Text2 {
  font_size_toolbar 100
  font_width_toolbar 100
  font_height_toolbar 100
  message "\[python \{nuke.toNode(\"Read1\").metadata()\[\"input/timecode\"]\}] "
  old_message {{48 57 58 48 49 58 49 57 58 48 57 32}
    }
  old_expression_markers {{0 10}
    }
  box {0 1051 529 1152}
  transforms {{0 2}
    }
  cursor_position 61
  scale {1 1}
  center {1024 576}
  cursor_initialised true
  initial_cursor_position {{0 1152}
    }
  group_animations {{0} imported: 0 selected: 0 items: "root transform/"}
  animation_layers {{1 11 1024 576 0 0 1 1 0 0 0 0}
    }
  name Text1
  xpos -415
  ypos 862
  disable {{parent.tc!=1}}
 }
set N495d8800 [stack 0]
 Output {
  name Output1
  xpos -420
  ypos 1587
 }
push $N49598400
 Remove {
  name Remove1
  xpos -332
  ypos 597
 }
push $N495d8800
 Viewer {
  frame_range 1001-1528
  name Viewer1
  xpos -229
  ypos 334
 }
end_group