ComfyUI-FunPack (classic 4.x)

Note

This is the classic FunPack 4.x, kept for anyone who needs the older UI. The newer UI is FunUI v5 (formerly FunPack v5) (the main branch): modules, pipeline cards, a timeline studio. If you do not have a reason to stay on 4.x, use v5. If you want the older UI without modules and the other v5 complications, you can stay here or switch to it. It receives no new features.

FunPack is a UI that unlocks novel conditioning and sampling enhancements, wires cutting-edge techniques and allows simple non-linear video montage - all while using regular ComfyUI backend. Graphs replaced with neat cards, get/set replaced with Linked inputs, and simple text fields leveled up to Composer - prefix, prompt, postfix, $variables, Ideas button, shortcuts and splits - for your prompting comfort.

   

Important

FunPack is a hobby project maintained by a single person. It's crafted for my personal needs mostly, and I can't test every single possible variant of usage to confirm it's bug-free and working as intended. If you had found a bug or you want to request a new feature, feel free to add an entry to Issues - that would be the most appreciated.

What's in FunPack 4

• One app instead of two. Easy Gen is now Simple mode of Cutting Room, and both live at /funpack/. The Hub is gone.
• Light and dark themes, picked in Settings -> Appearance.
• Project Setup Wizard on first run, ending in the Interactive Guide.
• Models are cards on a shelf now, not a list. Nothing saves until you close the editor, and Cancel really cancels.
• FunPack's own diffusion, CLIP and VAE loaders, with weight/compute dtype and an attention backend per model.
• MiniMax H3 support, including its audio stream, keyframe pins and reference images.
• Settings live in one window. Three of them can be pinned to the toolbar.
• Clip effects on the timeline - flip, crop, fill, reverse - with preview matching the render.
• Export settings as a picture, so you can tell later what produced a video.

Experimental features that never proved out have been removed in this release. The full list is in CHANGELOG.md.

Installation

FunPack is available on Comfy Registry and can be installed in any of these ways:

1. With comfy-cli: comfy node install FunUI
2. With git, inside your ComfyUI/custom_nodes directory: git clone -b v4-classic https://github.com/digital-garbage/FunUI (comfy-cli and ComfyUI-Manager install the latest published release, which is v5; use git with -b v4-classic for this classic version.)
3. With ComfyUI-Manager: Open Custom Nodes Manager, search for FunUI, and click Install.

Dependencies

FunPack includes a requirements.txt file for its Python dependencies.

Install them with:

pip install -r requirements.txt

FunPack uses your existing ComfyUI/PyTorch install. The expected baseline is transformers >= 5.0.0

Documentation

To understand how to use FunPack Cutting Room, please consider walking through the Interactive Guide.

It's available in the end of Project Setup Wizard or at anytime from the top bar menu - Help -> Welcome tour.

Additional information can be found in docs folder.

Version history is available in CHANGELOG.md.

Feedback

If you have suggestions, questions, or ideas for new features, feel free to open an issue or submit a pull request.

Intent

FunPack is provided under GNU General Public License V3, which gives you broad rights to use, modify and distribute the original/modified version of it as long as the original license text is included. FunPack places no limitations on types of content you can generate by using it, meaning both SFW and NSFW content are fine as long as you don't violate your local laws. GPLv3 does not grant you rights for such violations.

However, I do not endorse using FunPack and/or demonstrating it alongside morally and legally questionable/prohibited content, including:

• Non-consensual explicit depiction of a real person;
• Explicit depiction of minors;
• Depiction of violence and gore targeted at a real person.

I do not provide support to users who use FunPack in such cases, and in case I detect it, any support will be immediately ceased.

Thanks for understanding.

Thank you

I express my deepest gratitude to:

• OpenAI and ChatGPT Codex;
• xAI and Grok Build;
• Anthropic and Claude Code;
• Team Cursor and Composer model;
• DeepSeek team and model;
• Google and Gemini;
• Lightricks and LTX-Video model;
• ComfyUI-LTXVideo — LTX model loaders and nodes used by the built-in Cutting Room pipeline;
• ComfyUI-VideoHelperSuite — video combine and helper nodes for montage export;
• ComfyUI-KJNodes — utility nodes used by the built-in pipeline;
• OpenCut — the in-browser non-linear video editor whose UI and interaction patterns inspired the FunPack Movie Editor;
• ComfyUI and its whole community.

Without all of you, this project would've been impossible.

With <3

DigitalGarbage