Nuke 14.1 viewer overlay for adding named, colour-coded timeline markers. Semi-transparent with DWM blur. Markers saved in the .nk script. C++ and Python.
Timebar Markers
First submitted: 20 March 2026
Updated: 21 March 2026
Author: Marty Blumen
Website: https://www.martyblumen.com/
Compatible Nuke versions: 14.0 or later
Compatibility: Source
Marker Timebar adds a draggable, semi-transparent timebar overlay directly inside Nuke's viewer pane, complementing the native timeline with named, colour-coded markers at arbitrary frames.
Features
Overlay sits inside the viewer canvas with Windows DWM acrylic blur behind it
Add markers via the + button, double-click or right-click on the bar — each has a frame number, label and colour
Colour-coded label pills displayed above the bar for quick visual reference
Navigate between markers with << and >> buttons
Collapse to a thin bar to save screen real estate, expand back with one click
Drag the ⠿ handle to reposition the bar vertically anywhere in the viewer
Three opacity levels (ghost / semi / solid) cycled with the T button
Alt+M toggles the overlay on and off — position remembered and scales correctly when the viewer goes fullscreen with Spacebar
Hides automatically when the node graph goes fullscreen
Inset from viewer edges — won't cover rotopaint tools or 3D viewport controls
Marker Storage
Markers are stored as a hidden JSON knob on Nuke's Root node, so they travel with the .nk file without creating any nodes in the graph. No F-key zoom-out issues. If a colleague opens the script without the tool installed it has no effect whatsoever.
Two versions included
The C++ version (Nuke 14.1 / Windows 11) delivers genuine Windows DWM acrylic blur behind the overlay. The Python/PySide2 version works as a fallback and includes a full floating marker list panel.
Build from Source
https://github.com/bratgot/Timebarmarkers
MIT License
Copyright (c) 2026 Marten Blumen
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