ComfyUI Node
MiniMax H3 Latent Upscaler + Refine (3D)
Learned LBH 3D upscale followed by low-sigma MiniMax H3 refinement. H3 Continuum chunk lists are refined sequentially so each Native-Masked continuation prefix is replaced by the exact post-refine tail of the preceding chunk before sampler 2. The LATENT output is final/decode-ready.
MiniMax H3 Latent Upscaler + Refine (3D)
- latent
- noise
- sampler
- sigmas
- audio_latent
- refine_state
- model
- positive
- negative
- latent
◄model_name▾►
◄modescale by multiplier►
◄scale2.00►
◄width1280►
◄height704►
◄megapixels1.0►
◄align32►
◄keep_proportiontrue►
◄lock_audiotrue►
◄cfg1.0►
◄devicecuda►
◄precisionfp16►
◄offload_after_upscalefalse►
Categoryvideo/MinimaxH3
Inputs (22)
| Name | Type | Default | Description |
|---|---|---|---|
| latent | LATENT | — | |
| noise | NOISE | — | |
| sampler | SAMPLER | — | |
| sigmas | SIGMAS | — | |
| model_name | COMBO | 1 options: (place models in: /tmp/ComfyUI/models/latent_upscale_models) | |
| mode | COMBO | scale by multiplier | 3 options: scale by multiplier, target dimensions, megapixels |
| scale | FLOAT | 2.001–4 | — |
| width | INT | 128064–4096 | — |
| height | INT | 70464–4096 | — |
| megapixels | FLOAT | 1.00.1–8 | — |
| align | INT | 321–512 | — |
| keep_proportion | BOOLEAN | true | — |
| lock_audio | BOOLEAN | true | On preserves pass-1 audio exactly and masks it out of refinement. Off lets sampler 2 refine/remix audio too. |
| cfg | FLOAT | 1.00–100 | Used only when optional negative conditioning is connected on the native fallback path. |
| device | COMBO | cuda | 2 options: cuda, cpu |
| precision | COMBO | fp16 | 3 options: fp32, fp16, bf16 |
| offload_after_upscale | BOOLEAN | false | Move the cached learned upscaler to CPU after the upscale and before sampler 2. Useful for low VRAM; leave off for faster repeated runs. |
| audio_latentopt | LATENT | For H3 Continuum, connect the matching audio_latents output. Leave disconnected for native joint AV LATENT input. | |
| refine_stateopt | H3_CONTINUUM_REFINE_STATE | Preferred H3 Continuum path: exact per-chunk fresh MODEL wrapper + positive CONDITIONING captured by Continuum. Takes precedence over manual model/positive/negative fallback connections. | |
| modelopt | MODEL | Native/non-Continuum fallback. Ignored when refine_state is connected. | |
| positiveopt | CONDITIONING | Native/non-Continuum fallback. Ignored when refine_state is connected. | |
| negativeopt | CONDITIONING | Optional CFG compatibility for native fallback only. Ignored when refine_state is connected. |
Outputs (1)
| Name | Type | Description |
|---|---|---|
| latent | LATENT | — |