CopyCat Training Template
A production-ready Nuke template for training CopyCat models for both roto and prep work.
I wanted a faster, more consistent CopyCat workflow that reduced setup time and made it easier to validate training before committing to long training sessions.
Features
One-click Roto / Prep switching
Built-in sanity checker
Inference preview
Reference frame helper
Training data helper
Global training controls
Colour-coded UI
Production-friendly workflow
Global Control
Switch the entire template between Roto and Prep from a single control. All helper nodes update automatically.
Copycat Helper
Generate correctly formatted training data with a dedicated helper that:
Supports both Roto and Prep workflows
Selects a reference frame
Automatically prepares the required training channels
Single Dataset Workflow
Train CopyCat using a single dataset. The template automatically generates the required input and ground truth, eliminating the need to duplicate and manually match training data.
Other features
✅ Built-in Sanity Check
Quickly verify that your training data has been configured correctly before starting CopyCat.
Roto: Ground truth matte is highlighted in red.
Prep: Modified paint regions are highlighted in red.
👀 Inference Preview
Preview inference results during training so you can identify problems early and avoid wasting training time.
🎨 Colour-Coded Workflow
Training mode is colour-coded throughout the template, making it easy to identify whether you're working in Roto or Prep mode.
📌 Reference Frame Management
Built-in FrameHold controls make it easy to choose and update your training frame without digging through the node graph.
⚡ Optimised Training Data
Encourages cropping and efficient dataset preparation to reduce training times and improve CopyCat performance.
🛠 Production-Friendly Layout
Organised into clear stages:
User Data
CopyCat Training
Sanity Check
Inference Check
The structured layout makes the workflow easy to follow and reuse across multiple shots.
🔍 Built-in Matte Review
Includes an integrated matte checker for quickly reviewing CopyCat results against the source plate.
Requirements: NukeX 16+ , CopyCat
Changelog
Version 2.0 — Initial Release
August 2026
First public release of the CopyCat Training Template.
Features:
Complete CopyCat training workflow for both Roto and Prep
Global training mode control
Single dataset workflow — automatically generates input and ground truth without manual duplication
CopyCat Helper for streamlined training setup
Built-in sanity check for validating training data
Inference review section for monitoring CopyCat results
Reference frame and frame hold controls
Integrated matte review tools
Production-focused node organisation and workflow guidance