ComfyUI MiniMax H3 Text-to-Video, Image-to-Video, and Reference-to-Video Workflows

​

MiniMax H3 Text to Video (T2V)

​

Model downloads

​

Model storage

ComfyUI/
├── 📂 models/
│   ├── 📂 diffusion_models/
│   │   └── minimax_h3_fl2va_pruned_int8_convrot.safetensors
│   ├── 📂 text_encoders/
│   │   └── qwen3vl_32b_minimax_h3_nvfp4_awq.safetensors
│   ├── 📂 vae/
│   │   ├── minimax_h3_video_vae_fp16.safetensors
│   │   └── minimax_h3_audio_vae_fp32.safetensors
│   ├── 📂 loras/
│   │   └── minimax_h3_fl2v_turbo_8step_v1.0_comfyui_bf16.safetensors
│   └── 📂 embeddings/
│       └── minimaxh3_art_is_explosion.safetensors

​

Prompting tips

1. Describe the whole scene: State the overall scene first (location, character, what is happening), then break it into timed shots
2. Shots, camera, and audio: Describe the shots, camera moves, and the accompanying audio (dialogue, SFX, music) in one prompt block
3. Resolution: H3’s native canvas is a 768px short edge, which is 1344x768 at 16:9, and resolutions are rounded to a multiple of 32
4. Duration: The duration input snaps to the model’s 17-frame-per-block (17k+5) grid at 24fps
5. First/last frame: Connect images to first_frame and/or last_frame on the MiniMaxH3ImageToVideo node to turn this workflow into first/last-frame image-to-video
6. Turbo mode (optional): The workflow generates at 20 steps by default; raise the step count (for example to 25) for better motion quality. Enable turbo_mode on the MiniMax H3 node to use the included Lightning LoRA (minimax_h3_fl2v_turbo_8step_v1.0_comfyui_bf16) at 8 steps for much faster generation, with slightly lower audio and motion quality

​

MiniMax H3 Image to Video (I2V)

​

Model downloads

​

Model storage

ComfyUI/
├── 📂 models/
│   ├── 📂 diffusion_models/
│   │   └── minimax_h3_fl2va_pruned_int8_convrot.safetensors
│   ├── 📂 text_encoders/
│   │   └── qwen3vl_32b_minimax_h3_nvfp4_awq.safetensors
│   ├── 📂 loras/
│   │   └── minimax_h3_fl2v_turbo_8step_v1.0_comfyui_bf16.safetensors
│   ├── 📂 vae/
│   │   ├── minimax_h3_video_vae_fp16.safetensors
│   │   └── minimax_h3_audio_vae_fp32.safetensors
│   └── 📂 embeddings/
│       └── minimaxh3_art_is_explosion.safetensors

​

Prompting tips

1. Keyframes: The first_frame and last_frame inputs are optional; the model generates the motion between them
2. Prompt: Describe the shots, motion, and the accompanying audio (dialogue, SFX, music) in one block
3. Resolution: H3’s native canvas is a 768px short edge, which is 1344x768 at 16:9, and resolutions are rounded to a multiple of 32
4. Duration: The duration input snaps to the model’s 17-frame-per-block (17k+5) grid at 24fps
5. Turbo mode: Enable turbo_mode on the MiniMax H3 node to switch to the turbo LoRA and generate in turbo_steps (default 8) instead of 20 steps. turbo_model_strength controls the LoRA strength (default 1.0).

​

MiniMax H3 Reference to Video (R2V)

​

Model downloads

​

Model storage

ComfyUI/
├── 📂 models/
│   ├── 📂 diffusion_models/
│   │   └── minimax_h3_ref2va_pruned_int8_convrot.safetensors
│   ├── 📂 text_encoders/
│   │   └── qwen3vl_32b_minimax_h3_nvfp4_awq.safetensors
│   ├── 📂 vae/
│   │   ├── minimax_h3_video_vae_fp16.safetensors
│   │   └── minimax_h3_audio_vae_fp32.safetensors
│   ├── 📂 loras/
│   │   └── minimax_h3_ref2v_turbo_4step_v0.1_comfyui_bf16.safetensors
│   └── 📂 embeddings/
│       └── minimaxh3_art_is_explosion.safetensors

​

Prompting tips

1. Reference by tag: Reference each input by tag in the exact order it was connected, for example <Picture 1>, <Video 1>, <Audio 1>
2. Assign each reference a job: State which reference drives which part of the shot (identity, style, motion, camera, voice). Explicit assignments tend to work much better
3. Limits: Up to 9 reference images, 3 reference videos (each can carry its own soundtrack), and 3 standalone reference audio clips
4. ref_image_size: match scales references down to the generation resolution for speed; max keeps up to a 2048px short edge for stronger identity fidelity at the cost of speed
5. Note: R2V uses the ref2va diffusion model, a different set of weights from the fl2va model used by the T2V and I2V workflows
6. Turbo mode (optional): The workflow generates at 20 steps by default; raise the step count (for example to 25) for better motion quality. Enable the Lightning LoRA checkbox to use the 4-step turbo LoRA (minimax_h3_ref2v_turbo_4step_v0.1_comfyui_bf16) for much faster generation, with slightly lower audio and motion quality

​

Advanced workflows with the native nodes

​

Anchoring guides at any frame (#15439)

• image: A still image or a clip. Multi-frame batches are anchored as a clip and cropped down to the model’s valid clip lengths: 5, 22, 39… frames (17k+5). Batches shorter than 5 frames use only the first image
• audio: A soundtrack anchored at the same frame index, cropped to the video’s remaining duration
• frame_idx: The frame to anchor at. Negative values count from the end of the video

​

Inpainting and extension with latent noise masks (#15375)