MiniMax H3 GGUF ComfyUI Workflow (Q4_K_M FL2VA + Q2_K encoder, first/last frame)
================================================================================

Article: https://freakyjolly.com/best-minimax-h3-gguf-workflow-comfyui/

What's inside:
  - MiniMax_H3_FL2V_GGUF_Q4KM_Q2K_Workflow.json: ComfyUI workflow (UI format). Drag it onto the ComfyUI canvas or use Workflow > Open.

Required models (download each file and put it in the folder shown):
  - minimax_h3_audio_vae_fp32.safetensors
      folder: ComfyUI/models/vae/
      download: https://huggingface.co/Comfy-Org/MiniMax-H3/resolve/main/vae/minimax_h3_audio_vae_fp32.safetensors
  - minimax_h3_fl2va_pruned-Q4_K_M.gguf
      folder: ComfyUI/models/diffusion_models/
      download: https://huggingface.co/leejet/MiniMax-H3-GGUF/resolve/main/minimax_h3_fl2va_pruned-Q4_K_M.gguf
  - minimax_h3_video_vae_fp16.safetensors
      folder: ComfyUI/models/vae/
      download: https://huggingface.co/Comfy-Org/MiniMax-H3/resolve/main/vae/minimax_h3_video_vae_fp16.safetensors
  - qwen3vl-32B-MiniMax-H3-Q2_K.gguf
      folder: ComfyUI/models/text_encoders/
      download: https://huggingface.co/realrebelai/MiniMax-H3_GGUFs/resolve/main/qwen3vl-32B-MiniMax-H3-Q2_K.gguf
  - qwen3vl_32b_minimax_h3_nvfp4_awq.safetensors
      folder: ComfyUI/models/text_encoders/
      download: https://huggingface.co/Comfy-Org/MiniMax-H3/resolve/main/text_encoders/qwen3vl_32b_minimax_h3_nvfp4_awq.safetensors

Custom nodes:
  - Nvidia RTX Nodes (RTX Video Super Resolution; needs an RTX GPU and the nvidia-vfx package): https://github.com/Comfy-Org/Nvidia_RTX_Nodes_ComfyUI  (ComfyUI Manager > Install Missing Custom Nodes, or git clone into ComfyUI/custom_nodes/)
  - ComfyUI-KJNodes: https://github.com/kijai/ComfyUI-KJNodes  (ComfyUI Manager > Install Missing Custom Nodes, or git clone into ComfyUI/custom_nodes/)
  - ComfyUI-GGUF (leejet fork, UnetLoaderGGUF / CLIPLoaderGGUF): https://github.com/leejet/ComfyUI-GGUF  (ComfyUI Manager > Install Missing Custom Nodes, or git clone into ComfyUI/custom_nodes/)
  - ComfyUI-Easy-Use: https://github.com/yolain/ComfyUI-Easy-Use  (ComfyUI Manager > Install Missing Custom Nodes, or git clone into ComfyUI/custom_nodes/)

How to use:
  1. Install the custom nodes above and restart ComfyUI.
  2. Download the GGUF files and VAEs into the folders listed.
  3. Drag MiniMax_H3_FL2V_GGUF_Q4KM_Q2K_Workflow.json onto the canvas (it contains a subgraph).
  4. Pick first_frame.png and last_frame.png in the two Load Image nodes, edit the prompt and queue.

Notes:
  - The safetensors text encoder (qwen3vl_32b_minimax_h3_nvfp4_awq) is listed as the faster alternative to the Q2_K GGUF encoder.
  - RTX Video Super Resolution needs an RTX card and the nvidia-vfx package. Bypass it and un-bypass the raw Save Video if you do not have one.

Model weights are not included. Each model keeps its own licence; check the model page before commercial use.
Workflow shared by FreakyJolly.com.
