IBK Color Master v3 Tutorial by Shahid Gire aka. VFX SHOWDOWN.

GitHub   Nukepedia

IBK Color Master v3 updates

  • Enhanced "Patch Steps" Feature: The "Patch Steps" feature now uses Python to create nodes on the go, minimizing the number of nodes used when fewer patch steps are used.

  • New "Patch Roughly" Option: Added a handy "Patch Roughly" feature that quickly and lightly extends edge colors using the "EdgeExtend" node. It complements the "Patch Steps" function, allowing users to cover details around edges with higher quality patch and then fill remaining areas efficiently with Patch Roughly.

  • Added "Crop" Knob: Included a "Crop" knob with a default overscan of 0 pixels, giving users more control over the cropping with or without overscan.

  • Removed Mask Input: Mask input is now hidden by default, with a checkbox to enable it when needed.

  • One-Click IBK Gizmo Creation: Added a little time-saving "Create IBK Gizmo" button. It automatically create the IBKGizmo node, connects inputs correctly, and sets screen color same as IBK Color Master for quicker setup.


  • Choose either the green or blue screen color for the shot. Activate the 'View without patch' switch. Adjust the darks, lights, and erode values to achieve the desired outcome. If necessary, utilize the 'Exclude mask' input feature to manually roto and remove any fine details that were not captured with the darks and light adjustments. When finished, deactivate the 'View without patch' switch.

  • Set the 'Patch steps' amount according to the shot requirements. It is recommended to use a small value for better performance. If there are still areas that have not been patched with the 'Patch steps' option, then use the 'Patch roughly' option to fill in the remaining area.


  • Copy 'IBK Color Master v3.gizmo' to '.nuke' folder.
​nodemenu = nuke.menu('Nodes')
KeyerMenu = nodemenu.menu('Keyer')
KeyerMenu.addCommand("IBK Color Master", "nuke.createNode('IBK_Color_Master_v3.gizmo')", icon="IBKColour.png")

  • Done, Open nuke and enjoy keying.