A ComfyUI workflow pack for running Wan2.1 video generation on low-VRAM GPUs (as low as 4 GB). Uses GGUF-quantised models and custom nodes from Kijai and others.

Included Workflows

Wan2.1 T2V — Text to Video
Wan2.1 I2V — Image to Video
Wan2.1 VACE — Video and Conditioning Extension
Wan2.1 First Frame / Last Frame
Funcontrol (experimental)
Funcameraimage (experimental)

Required Custom Nodes

Node	Link
GGUF	https://github.com/calcuis/gguf
WanVideoWrapper	https://github.com/kijai/ComfyUI-WanVideoWrapper
Tiled KSampler	https://github.com/FlyingFireCo/tiled_ksampler
KJNodes	https://github.com/kijai/ComfyUI-KJNodes
Video Helper Suite	https://github.com/Kosinkadink/ComfyUI-VideoHelperSuite
rgthree-comfy (LoRA stacking only)	https://github.com/rgthree/rgthree-comfy

Model Downloads

Model	Link	Notes
WAN GGUF	https://huggingface.co/calcuis/wan-gguf	Main source
I2V alternative	https://huggingface.co/city96/Wan2.1-I2V-14B-480P-gguf/tree/main	Better for I2V
1.3B GGUF	https://huggingface.co/calcuis/wan-1.3b-gguf/tree/main	Fun/inpainting/T2V/VACE
Fun Control 14B	https://huggingface.co/city96/Wan2.1-Fun-14B-Control-gguf/tree/main	Fun-Control
Fun Camera 14B	https://huggingface.co/QuantStack/Wan2.1-Fun-V1.1-14B-Control-Camera-GGUF/tree/main	Camera-Control
VACE GGUF alt	https://huggingface.co/QuantStack/Wan2.1_14B_VACE-GGUF	VACE alternative

VAE / CLIP / Text Encoder: https://huggingface.co/Comfy-Org/Wan_2.1_ComfyUI_repackaged/tree/main/split_files

Place all .gguf files in ComfyUI/models/diffusion_models/

Quantisation Guide

Level	VRAM	Quality
Q5	Medium	Best balance
Q3_K_M	Low	Good
Q2_K	Lowest	Usable
14B	High	Best quality

Performance Tips

Enable Xformers, Sage Attention, or Triton for extra speed. Triton install guide: https://www.patreon.com/posts/easy-guide-sage-124253103

Helpful Links

Common errors: https://civitai.com/articles/17240
Prompting tips: https://www.reddit.com/r/StableDiffusion/comments/1j1r791/wan_21_comfyui_prompting_tips
CFG and shift values: https://www.reddit.com/r/StableDiffusion/comments/1j2q0xw/dont_overlook_the_values_of_shift_and_cfg_on_wan

Changelog

Version	Notes
v2.0	Teacache, Torch Compile, new GGUF loader
v1.8	See install video
v1.1	Better quality and stability
v1.0	Initial release

The-frizzy1/Wan21-GGUF-4GB-Workflow

Wan2.1 GGUF — 4GB VRAM ComfyUI Workflow

What This Is