A set of ComfyUI nodes for experimenting with video generation workflows based on WAN, HunyuanVideo, LTX, and similar models.
Studio now learns successful sampler seeds when the seed output is connected. Perfect and Loved it ratings can store concept-matched seeds under the active refinement key, and split-scene mode passes per-scene seed metadata to the Scene Chain sampler. The sampler can either use those unique scene seeds or reuse one seed for every scene with use_same_seed.
Scene Chain i2v guide carry is now opt-in and fixed for compact masks. The default path keeps guide carry disabled for cleaner cuts, while the experimental option correctly broadcasts compact i2v masks to full spatial chunk masks.
Added FunPack LTXAV Scene Chain Sampler for split-scene LTXV/LTXAV continuation in one ComfyUI run. Enable split_by_transitions in FunPack Studio or FunPack Video Refiner V2; the existing modified_positive output becomes one conditioning entry per detected scene. The sampler consumes those entries in order, samples each scene chunk with seed increments, preserves overlap from the previous chunk, and supports both plain video latents and nested LTXAV video/audio latents.
Scene splitting now uses transition order only. Written labels like scene ten, scene -999999, or scene minus infinity are treated as transition text, not as real scene numbers. The text before the first transition is kept as a character/global anchor and is prepended to every scene for consistency. Standalone then is no longer a split trigger; more specific transition phrases remain supported.
Important: the Scene Chain sampler is resource heavy. Long scene chains can create very large final latents, and you may run out of memory during VAE Decode even if sampling itself succeeds. Start with short scenes and modest max_scenes, then increase carefully.
Also improved the Studio Scene Builder mode dropdown refresh and expanded the transition phrase list for camera moves, final shots, and scene progression language.
The dev branch is intended for testing unfinished changes, implementing new logic and basically, flipping everything just because I can. It can be broken, renamed, or changed without warning.
Use only main if you want the most stable version of this node pack. Bug reports based on dev version will be ignored.
FunPack is available on Comfy Registry and can be installed in any of these ways:
- With
comfy-cli:comfy node install ComfyUI-FunPack - With git, inside your
ComfyUI/custom_nodesdirectory:git clone https://github.com/digital-garbage/ComfyUI-FunPack - With ComfyUI-Manager:
Open
Custom Nodes Manager, search forComfyUI-FunPack, and clickInstall.
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
hpsv3 is optional and only used by the FunPack StoryMem Keyframe Extractor quality filter, so it is not installed by default.
Install it manually only if you need that feature:
pip3 install hpsv3 --no-build-isolation
Installing hpsv3 can break Prompt Enhancer and Story Writer, because hpsv3 depends on a transformers version that conflicts with the version those LLM-based nodes require.
FunPack's LLM nodes require transformers >= 5.0. The version required for hpsv3 is strictly transformers==4.45.2. Installing any version different from it will result in broken quality detector.
If you install hpsv3, use --no-build-isolation. Optionally, specify the exact version - pip install transformers==4.45.2 --no-build-isolation.
Per-node documentation is available in the docs folder.
Start with:
docs/FunPackVideoRefinerV2.mdforFunPack Video Refiner V2docs/FunPackVideoRefinerV2QuickGuide.mdfor a short Discord-friendly Refiner V2 guidedocs/FunPackLTXAVSceneChainSampler.mdfor split-scene LTXV/LTXAV continuationdocs/FunPackLoraWorkflow.mdfor the LoRA/refiner helper workflowdocs/FunPackSceneBuilder.mdfor scene preset workflows
Version history is available in CHANGELOG.md.
If you have suggestions, questions, or ideas for new nodes, feel free to open an issue or submit a pull request.
FunPack is a hobby project, provided to you by a fellow AI enthusiast who "lives in the trenches" and knows exactly what people seek in video/audio generation workflows.
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.
I want to say thanks to teams behind OpenAI (ChatGPT/Codex), xAI (Grok), DeepSeek, Anthropic (Claude) and Google (Gemini) for all the help with coding and transforming my ideas into something working in real UI. Thanks to all the testers and users who regularly use FunPack in their workflows, request features and report bugs. Without all of you, this project would've been just wet dreams of a wannabe coder begging on Discord for someone to add nodes he wants. Seriously, you are cool. I love you all. <3