CompStart

Pro Lessons Courses Elements Software

Viewer Input

ToolSets / Utility

Utility

2026-09-07

ToolSets/utility/VIEWER_INPUT.nk

utility

viewer

boost

HSV

HSL

timecode

colorspace

inspect

View on GitHub

Viewer utility with boost, HSV, and HSL modes plus an optional timecode overlay for quick image checks.

Viewer Input is a utility group meant to sit on your viewer path so you can inspect a plate or pass without rebuilding the same setup each time. Feed your image in; the gizmo switches between three view modes and can burn in timecode.

Mode selects boost, HSV, or HSL. Boost runs a hard gain through ColorCorrect and blends it over the original with Mix so you can lift shadows and midtones for visibility. HSV and HSL convert the image through Colorspace for channel and keying checks.

Enable tc to overlay timecode read from Read1’s input/timecode metadata. Turn it off when you only need the grade or colorspace view. Use it as a temporary viewer input while lighting, keying, or reviewing plates.

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