tags:
- comfyui
- minimax-h3
- first-last-frame
- flf
- reference-to-video
- r2v
- video-generation
- int8
- sol-attn
- spectrum
- turbo-lora
- lightx2v
- motion-context
- latent-upscaler
- workflow
- optimization
- quantization
MiniMax-H3 INT8 FLF & Reference Video Workflows Collection
A collection of optimized ComfyUI workflows for MiniMax-H3, designed for high-speed and controlled video generation using INT8 quantization, Sol-Attn, Spectrum acceleration, Lightx2v LoRA, MiniMax-H3-Turbo-Lora (Experimental), Motion Context, and Latent Upscaling.
These workflows provide optimized pipelines for:
- First-Last-Frame (FLF) video generation
- Reference-to-Video (R2V) generation
- Motion Context-enhanced FLF generation
- High-speed INT8 inference
- LoRA-based acceleration
- Latent video upscaling
Optimized for the ComfyUI-compatible MiniMax-H3 model package.
Base model:
Comfy-Org/MiniMax-H3
https://huggingface.co/Comfy-Org/MiniMax-H3
Workflows
| Workflow | File | Description |
|---|---|---|
| First-Last-Frame (FLF) | MiniMax_int8_I2V-javanoYYMM.x.json |
Generate controlled video transitions using first and last frame images, with optional Motion Context conditioning. |
| Reference-to-Video (R2V) | MiniMax_int8_R2V-javanoYYMM.x.json |
Generate videos while maintaining reference image characteristics. |
Features
INT8 Optimization
Uses the INT8 version of MiniMax-H3.
Benefits:
- Reduced VRAM usage
- Faster inference
- Improved memory efficiency
- Optimized local ComfyUI generation
Sol-Attn Acceleration
Integrated support for:
ComfyUI-SolAttn_triton
https://github.com/kijai/ComfyUI-SolAttn_triton
Sol-Attn provides Triton-based optimized attention kernels for ComfyUI.
Benefits:
- Faster attention computation
- Reduced attention overhead
- Improved generation throughput
Spectrum Acceleration
Integrated support for:
ComfyUI-Spectrum-MiniMax-H3
https://github.com/xmarre/ComfyUI-Spectrum-MiniMax-H3
Features:
- Faster sampling
- Reduced generation time
- Optimized MiniMax-H3 inference
- Native ComfyUI workflow integration
Motion Context
Available in the FLF workflow only.
ComfyUI-H3-Motion-Context
https://github.com/NikoDemon80/ComfyUI-H3-Motion-Context
Motion Context provides additional temporal motion information to the MiniMax-H3 FLF generation pipeline.
Features:
- Motion-context conditioning
- Additional temporal motion guidance
- Motion-aware FLF generation
- Improved control over generated movement
This custom node is currently integrated into:
MiniMax_int8_I2V-javanoYYMM.x.json
It is not used by the R2V workflow.
Lightx2v LoRA
Integrated support for the Lightx2v LoRA for MiniMax-H3:
Kijai/MiniMax-H3_comfy
https://huggingface.co/Kijai/MiniMax-H3_comfy
Lightx2v LoRA is used as an additional acceleration method for reducing the number of sampling steps required for video generation.
Features:
- Reduced sampling steps
- Faster video generation
- Accelerated workflow iteration
- Compatible with MiniMax-H3 ComfyUI workflows
The optimal LoRA strength and sampling configuration may vary depending on the workflow and desired output quality.
MiniMax-H3-Turbo-Lora (Experimental)
Optional support for:
MiniMax-H3-Turbo-Lora-ComfyUI
https://huggingface.co/drbaph/MiniMax-H3-Turbo-Lora-ComfyUI
Turbo-LoRA enables faster generation using fewer sampling steps.
Features:
- Low-step generation
- Faster previews
- Rapid workflow testing
- ComfyUI-compatible implementation
Recommended for:
- Fast prototyping
- Motion testing
- Preview rendering
This feature is experimental. Output quality may vary depending on:
- Sampling steps
- LoRA strength
- Prompt complexity
- Motion intensity
- Resolution settings
Latent Upscaler
Integrated support for:
ComfyUI-MiniMaxH3_LatentUpscaler
https://github.com/Tr1dae/ComfyUI-MiniMaxH3_LatentUpscaler
The Latent Upscaler provides a dedicated post-generation upscaling pipeline for MiniMax-H3 video output.
Features:
- Latent-space video upscaling
- Higher output resolution
- Improved fine details
- Enhanced texture and image quality
- Designed specifically for MiniMax-H3 workflows
The upscaling stage can be used after the initial video generation to improve output resolution and visual detail without requiring the entire generation process to run at the higher resolution.
Workflow Details
First-Last-Frame (FLF)
MiniMax_int8_I2V-javanoYYMM.x.json
A First-Last-Frame video generation workflow using MiniMax-H3 INT8.
Input:
- First frame (starting image)
- Last frame (ending image)
- Optional Motion Context
Generates smooth transitions between two keyframes.
Features:
- First Frame + Last Frame conditioning
- Controlled motion transitions
- Scene transformation
- Pose changes
- Camera movement control
- Optional Motion Context conditioning
- INT8 inference
- Sol-Attn acceleration
- Spectrum acceleration
- Lightx2v LoRA support
- Optional Turbo-LoRA support
- Latent Upscaler support
Recommended for:
- Cinematic transitions
- Character animation
- Camera movement
- Transformation effects
- Keyframe-based storytelling
- Motion-guided generation
Reference-to-Video (R2V)
MiniMax_int8_R2V-javanoYYMM.x.json
Reference-guided video generation workflow.
Features:
- Reference image conditioning
- Character consistency
- Appearance preservation
- INT8 inference
- Sol-Attn acceleration
- Spectrum acceleration
- Lightx2v LoRA support
- Optional Turbo-LoRA support
- Latent Upscaler support
Recommended for:
- Character videos
- Product visualization
- Consistent subjects
- Image-driven animation
Motion Context is not included in this workflow.
Required Custom Nodes
Install the following custom nodes:
ComfyUI-SolAttn_triton
https://github.com/kijai/ComfyUI-SolAttn_triton
ComfyUI-Spectrum-MiniMax-H3
https://github.com/xmarre/ComfyUI-Spectrum-MiniMax-H3
ComfyUI-H3-Motion-Context
https://github.com/NikoDemon80/ComfyUI-H3-Motion-Context
ComfyUI-MiniMaxH3_LatentUpscaler
https://github.com/Tr1dae/ComfyUI-MiniMaxH3_LatentUpscaler
Install via:
ComfyUI Manager → Install Missing Custom Nodes
Required Models
Main Model
ComfyUI-compatible MiniMax-H3:
https://huggingface.co/Comfy-Org/MiniMax-H3
Lightx2v LoRA
Kijai/MiniMax-H3_comfy
https://huggingface.co/Kijai/MiniMax-H3_comfy
Used for Lightx2v acceleration.
Optional Turbo-LoRA
MiniMax-H3-Turbo-Lora-ComfyUI
https://huggingface.co/drbaph/MiniMax-H3-Turbo-Lora-ComfyUI
Used for experimental low-step acceleration.
Recommended Environment
- Latest ComfyUI
- Latest ComfyUI-Manager
- Comfy-Org/MiniMax-H3
- ComfyUI-SolAttn_triton
- ComfyUI-Spectrum-MiniMax-H3
- ComfyUI-H3-Motion-Context
- ComfyUI-MiniMaxH3_LatentUpscaler
- Kijai/MiniMax-H3_comfy
- MiniMax-H3-Turbo-Lora-ComfyUI (Optional)
Installation
Update ComfyUI and ComfyUI-Manager.
Install the required custom nodes:
ComfyUI-SolAttn_triton
https://github.com/kijai/ComfyUI-SolAttn_triton
ComfyUI-Spectrum-MiniMax-H3
https://github.com/xmarre/ComfyUI-Spectrum-MiniMax-H3
ComfyUI-H3-Motion-Context
https://github.com/NikoDemon80/ComfyUI-H3-Motion-Context
ComfyUI-MiniMaxH3_LatentUpscaler
https://github.com/Tr1dae/ComfyUI-MiniMaxH3_LatentUpscaler
- Download the main model:
Comfy-Org/MiniMax-H3
https://huggingface.co/Comfy-Org/MiniMax-H3
- Download the Lightx2v LoRA:
Kijai/MiniMax-H3_comfy
https://huggingface.co/Kijai/MiniMax-H3_comfy
- Optional: download the experimental Turbo-LoRA:
MiniMax-H3-Turbo-Lora-ComfyUI
https://huggingface.co/drbaph/MiniMax-H3-Turbo-Lora-ComfyUI
- Load the workflow:
FLF:
MiniMax_int8_I2V-javanoYYMM.x.json
R2V:
MiniMax_int8_R2V-javanoYYMM.x.json
Performance Configuration
The workflows support multiple acceleration technologies that can be combined depending on the desired balance between speed, quality, motion control, and stability.
Standard Fast Configuration
INT8 + Sol-Attn + Spectrum
Accelerated Configuration
INT8 + Sol-Attn + Spectrum + Lightx2v LoRA
FLF Motion Configuration
INT8 + Sol-Attn + Spectrum + Motion Context
Experimental Maximum-Speed Configuration
INT8 + Sol-Attn + Spectrum + Lightx2v LoRA + Turbo-LoRA
Latent Upscaler can then be used as a post-generation stage when higher output resolution is required.
Performance depends on:
- GPU architecture
- VRAM capacity
- Resolution
- Frame count
- Sampling steps
- LoRA strength
- Motion Context settings
- CUDA/driver version
Recommended Workflow
For a balance between speed and quality:
1. Generate at the base resolution
Use the INT8 MiniMax-H3 workflow with Sol-Attn and Spectrum.
2. Apply Motion Context when using FLF
Use Motion Context when additional temporal motion guidance is required. This feature is available in the FLF workflow only.
3. Apply acceleration LoRA
Use Lightx2v LoRA when fewer sampling steps are desired.
4. Optional Turbo-LoRA
Use Turbo-LoRA for experimental ultra-low-step generation and rapid previews.
5. Latent Upscaling
Use ComfyUI-MiniMaxH3_LatentUpscaler after generation when higher resolution or additional detail is required.
Notes
- FLF = First-Last-Frame video generation.
- R2V = Reference-to-Video generation.
- Motion Context is currently available only in the FLF workflow.
- Lightx2v LoRA is used for accelerated generation.
- Turbo-LoRA is experimental.
- Sol-Attn and Spectrum acceleration depend on hardware and software compatibility.
- Latent upscaling increases output resolution after the initial generation stage.
- Output quality may vary depending on sampling steps, LoRA strength, resolution, Motion Context settings, and acceleration configuration.
- Combining multiple acceleration methods may require careful tuning of sampling steps and LoRA weights.
Additional Resources
MiniMax-H3
https://huggingface.co/Comfy-Org/MiniMax-H3
Sol-Attn
https://github.com/kijai/ComfyUI-SolAttn_triton
Spectrum MiniMax-H3
https://github.com/xmarre/ComfyUI-Spectrum-MiniMax-H3
H3 Motion Context
https://github.com/NikoDemon80/ComfyUI-H3-Motion-Context
Lightx2v LoRA
https://huggingface.co/Kijai/MiniMax-H3_comfy
MiniMax-H3-Turbo-Lora-ComfyUI
https://huggingface.co/drbaph/MiniMax-H3-Turbo-Lora-ComfyUI
MiniMax-H3 Latent Upscaler
https://github.com/Tr1dae/ComfyUI-MiniMaxH3_LatentUpscaler
License
Please follow the licenses of:
- Comfy-Org/MiniMax-H3
- ComfyUI
- ComfyUI-SolAttn_triton
- ComfyUI-Spectrum-MiniMax-H3
- ComfyUI-H3-Motion-Context
- ComfyUI-MiniMaxH3_LatentUpscaler
- Kijai/MiniMax-H3_comfy
- MiniMax-H3-Turbo-Lora-ComfyUI
- Any additional custom nodes, LoRA, or third-party models used with these workflows.