README
MiniMax H3 · INT4 ConvRot
Low-memory INT4 ConvRot weights for running MiniMax H3 locally in ComfyUI
[!NOTE] For 12 GB GPUs, start with a pruned checkpoint. ComfyUI will rely on model offloading, so 32 GB+ system RAM and a fast NVMe SSD are recommended.
Included files
| File | Purpose | Size |
|---|---|---|
minimax_h3_fl2va_pruned_int4_convrot.safetensors | T2V / first-last-frame video | 11.3 GB |
minimax_h3_ref2va_pruned_int4_convrot.safetensors | Reference-driven video | 11.3 GB |
minimax_h3_fl2va_int4_convrot.safetensors | Full FL2VA checkpoint | 17.9 GB |
minimax_h3_ref2va_int4_convrot.safetensors | Full Ref2VA checkpoint | 17.9 GB |
qwen3vl_32b_minimax_h3_int4_convrot.safetensors | INT4 text encoder | 15.0 GB |
Installation
hf download Merserk/MiniMax-H3-INT4-ConvRot \
--local-dir MiniMax-H3-INT4-ConvRot
Place the files in:
ComfyUI/models/diffusion_models/ # FL2VA / Ref2VA checkpoints
ComfyUI/models/text_encoders/ # Qwen3-VL text encoder
ComfyUI/models/vae/ # Official MiniMax H3 video + audio VAEs
Update to ComfyUI 0.30.0+, then open Template Library → Video → MiniMax H3.
Model choice
- FL2VA — text-to-video, first-frame, last-frame, or first-and-last-frame generation.
- Ref2VA — generation guided by reference images, videos, and audio.
INT4 quantization may differ from the original BF16 model. These files are community conversions; the original MiniMax H3 Community License still applies.
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Linked in READMEs
README
MiniMax H3 · INT4 ConvRot
Low-memory INT4 ConvRot weights for running MiniMax H3 locally in ComfyUI
[!NOTE] For 12 GB GPUs, start with a pruned checkpoint. ComfyUI will rely on model offloading, so 32 GB+ system RAM and a fast NVMe SSD are recommended.
Included files
| File | Purpose | Size |
|---|---|---|
minimax_h3_fl2va_pruned_int4_convrot.safetensors | T2V / first-last-frame video | 11.3 GB |
minimax_h3_ref2va_pruned_int4_convrot.safetensors | Reference-driven video | 11.3 GB |
minimax_h3_fl2va_int4_convrot.safetensors | Full FL2VA checkpoint | 17.9 GB |
minimax_h3_ref2va_int4_convrot.safetensors | Full Ref2VA checkpoint | 17.9 GB |
qwen3vl_32b_minimax_h3_int4_convrot.safetensors | INT4 text encoder | 15.0 GB |
Installation
hf download Merserk/MiniMax-H3-INT4-ConvRot \
--local-dir MiniMax-H3-INT4-ConvRot
Place the files in:
ComfyUI/models/diffusion_models/ # FL2VA / Ref2VA checkpoints
ComfyUI/models/text_encoders/ # Qwen3-VL text encoder
ComfyUI/models/vae/ # Official MiniMax H3 video + audio VAEs
Update to ComfyUI 0.30.0+, then open Template Library → Video → MiniMax H3.
Model choice
- FL2VA — text-to-video, first-frame, last-frame, or first-and-last-frame generation.
- Ref2VA — generation guided by reference images, videos, and audio.
INT4 quantization may differ from the original BF16 model. These files are community conversions; the original MiniMax H3 Community License still applies.