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ComfyUI for Nuke

API to be able to use ComfyUI nodes within nuke, only using the ComfyUI server

Requirements

  • Nuke 11 or higher (Not tested on previous versions !)
  • websocket-client Python library
  • ComfyUI
  • ComfyUI-HQ-Image-Save (required to load images and sequences and work with EXR)

Installation

1. Copy to nuke folder

# Linux:
cd ~/.nuke
git clone --recursive https://github.com/vinavfx/ComfyUI-for-Nuke nuke_comfyui

# Windows
# Download git: https://git-scm.com/download/win
cd "C:\Users\<username>\.nuke"
git clone --recursive https://github.com/vinavfx/ComfyUI-for-Nuke nuke_comfyui

Or manually copy the entire git downloaded folder and its submodules to the nuke user folder

2. Install websocket-client Python Library

websocket-client is a third-party library needed for the scripts to work correctly. Here is a direct link to it's pypi installation.

This method installs the websocket-client library directly to your Nuke's Python environment. This example will be done with Nuke version 15.1v3, depending on your version change the number.

Open a terminal (or command prompt on Windows) and run:

 # Linux/Mac:
/usr/local/Nuke15.1v3/python3 -m pip install websocket-client

 # Windows (As administrator)
 "C:\Program Files\Nuke15.1v3\python.exe" -m pip install websocket-client

3. Copy these lines into menu.py

You can then add or update your Nuke menu.py file to include the location of your site-packages installation, It is not necessary to add the site-package if websocket was installed with the root or administrator user, since in that case it would be within the Nuke installation !

# Linux/Mac:
nuke.pluginAddPath('{}/.local/lib/python{}.{}/site-packages'.format(
    os.path.expanduser('~'), sys.version_info.major, sys.version_info.minor))

# Windows (Add only in Nuke older than 12.2)
nuke.pluginAddPath('C:/Python27/Lib/site-packages')
import nuke_comfyui as comfyui
comfyui.setup()

4. Install ComfyUI-Manager

cd <ComfyUI Directory>/custom_nodes
git clone https://github.com/ltdrdata/ComfyUI-Manager.git
cd ./ComfyUI-Manager
pip install -r requirements.txt

5. Install ComfyUI-HQ-Image-Save (required to work with EXR)

cd <ComfyUI Directory>/custom_nodes
git clone https://github.com/spacepxl/ComfyUI-HQ-Image-Save.git
cd ./ComfyUI-HQ-Image-Save
pip install -r requirements.txt

Setup

1 - Run ComfyUI Server

cd <ComfyUI Directory>
python main.py

2 - Modify environment variables in env.py

COMFYUI_DIR = '<path_to_ComfyUI>' # Put the directory where ComfyUI is installed !
IP = '127.0.0.1'
PORT = 8188
NUKE_USER = '<path_to_.nuke>' # Change only if your path is different !

Tips

1 - When connecting any image or roto from Nuke, take into consideration the 'FrameRange' of the output because that will be the batch size.

2 - To make ComfyUI work with pixel values greater than 1 and less than 0, uncheck the 'sRGB_to_linear' box in the 'SaveEXR' node

3 - Latent images only work with formats with multiple of 8, add the 'PrepareImageForLatent' node before passing the image to latent, and in the same node there is a button to create a restore node, put it on the image after inference to restore.

4 - To load all ComfyUI nodes when Nuke starts, change the 'update_menu_at_start' variable in the init.py file

5 - To use Switch on ComfyUI nodes use 'SwitchAny' as ComfyUI switch nodes don't work because they have 'any *' inputs and outputs, which is not possible on nuke because it doesn't have multiple outputs.

6 - If you want to have the ComfyUI server on another machine, you must share the folder where ComfyUI is installed and put the path in env.py

7 - Use the QueuePrompt 'Force Animation' method only if you have some keyframes animated, as this way is slower because it sends requests frame by frame and not in batches.

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