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      "unet_name": "minimax_h3_ref2va_pruned_int8_convrot.safetensors",
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      "title": "UNETLoader"
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  },
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    "class_type": "MiniMaxH3SigmaShift",
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      "model": [
        "model",
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      ],
      "shift_video": 12.0,
      "shift_audio": 3.0
    },
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      "title": "MiniMaxH3SigmaShift"
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  },
  "attention": {
    "class_type": "ModelAttentionBackend",
    "inputs": {
      "model": [
        "shift",
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      ],
      "attention": "comfy kitchen attention"
    },
    "_meta": {
      "title": "ModelAttentionBackend"
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  },
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    "class_type": "CLIPLoader",
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      "clip_name": "qwen3vl_32b_minimax_h3_nvfp4_awq.safetensors",
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      "device": "default"
    },
    "_meta": {
      "title": "CLIPLoader"
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  },
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    "class_type": "SelectCLIPDevice",
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      "clip": [
        "text",
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      ],
      "device": "gpu:0"
    },
    "_meta": {
      "title": "SelectCLIPDevice"
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  },
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    "class_type": "H3RelayTextMemory",
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      "clip": [
        "text_device",
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      ]
    },
    "_meta": {
      "title": "H3RelayTextMemory"
    }
  },
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    "class_type": "VAELoader",
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      "vae_name": "minimax_h3_video_vae_fp16.safetensors"
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    "_meta": {
      "title": "VAELoader"
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  },
  "audio_vae": {
    "class_type": "VAELoader",
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      "vae_name": "minimax_h3_audio_vae_fp32.safetensors"
    },
    "_meta": {
      "title": "VAELoader"
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  },
  "turbo": {
    "class_type": "LoraLoaderModelOnly",
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      "model": [
        "attention",
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      ],
      "lora_name": "minimax_h3_fl2v_turbo_8step_v1.0_768p_comfyui_bf16.safetensors",
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    "_meta": {
      "title": "LoraLoaderModelOnly"
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  },
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    "class_type": "LoraLoaderModelOnly",
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      "model": [
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    "_meta": {
      "title": "LoraLoaderModelOnly"
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  },
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    "class_type": "LoadVideo",
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      "file": "source.mp4"
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      "title": "LoadVideo"
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  },
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    "class_type": "H3RelayPrepareSource",
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      "video": [
        "source",
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      "resolution": "768",
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      "missing_audio": "silence"
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      "title": "H3RelayPrepareSource"
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  },
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    "class_type": "GetImageSize",
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      "image": [
        "prepare",
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      ]
    },
    "_meta": {
      "title": "GetImageSize"
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  },
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    "class_type": "LoadImage",
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      "image": "reference.png"
    },
    "_meta": {
      "title": "LoadImage"
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  },
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    "class_type": "CheckpointLoaderSimple",
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      "ckpt_name": "sam3.1_multiplex_fp16.safetensors"
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    "_meta": {
      "title": "CheckpointLoaderSimple"
    }
  },
  "subject": {
    "class_type": "CLIPTextEncode",
    "inputs": {
      "clip": [
        "sam",
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      ],
      "text": "person"
    },
    "_meta": {
      "title": "CLIPTextEncode"
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  },
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      "image": [
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      "title": "ImageFromBatch"
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  },
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    "class_type": "SAM3_Detect",
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        "first_frame",
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      "threshold": 0.35,
      "refine_iterations": 2,
      "individual_masks": true
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      "title": "SAM3_Detect"
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    "class_type": "H3RelaySelectMask",
    "inputs": {
      "masks": [
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      "selection": "largest",
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    "_meta": {
      "title": "H3RelaySelectMask"
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    "class_type": "SAM3_VideoTrack",
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      "model": [
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      "detection_threshold": 0.5,
      "max_objects": 1,
      "detect_interval": 1
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    "_meta": {
      "title": "SAM3_VideoTrack"
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  },
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    "class_type": "SAM3_TrackToMask",
    "inputs": {
      "track_data": [
        "track",
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      "object_indices": ""
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      "title": "SAM3_TrackToMask"
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  },
  "recover": {
    "class_type": "H3RelayRecoverMasks",
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      "masks": [
        "mask",
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      "images": [
        "prepare",
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        "sam",
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        "subject",
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      "selection": [
        "select",
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      "recover_empty_frames": true
    },
    "_meta": {
      "title": "H3RelayRecoverMasks"
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  },
  "expand_mask": {
    "class_type": "H3RelayExpandMask",
    "inputs": {
      "masks": [
        "recover",
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      "title": "H3RelayExpandMask"
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    "class_type": "PreviewImage",
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      "images": [
        "expand_mask",
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      ]
    },
    "_meta": {
      "title": "PreviewImage"
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  },
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    "class_type": "H3RelayWindowPlan",
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      "source_frames": [
        "prepare",
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      "window_frames": "124",
      "history_frames": "18",
      "seed": 904239,
      "schedule": "adaptive",
      "seed_mode": "fixed",
      "seed_overrides": "{}"
    },
    "_meta": {
      "title": "Plan source-aligned windows"
    }
  },
  "start": {
    "class_type": "StartLoop",
    "inputs": {
      "mode": "simple",
      "mode.num_iterations": [
        "plan",
        2
      ],
      "cache_iterations": false
    },
    "_meta": {
      "title": "Native loop \u00b7 one H3 window"
    }
  },
  "window": {
    "class_type": "H3RelayWindowInputs",
    "inputs": {
      "source": [
        "prepare",
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      ],
      "window": [
        "plan",
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      "iteration_index": [
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      "previous": [
        "start",
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      ],
      "reference_history": true,
      "fps": 24.0,
      "resize_anchor": true,
      "history_audio_mode": "source",
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        "prepare",
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      "mask": [
        "expand_mask",
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      ]
    },
    "_meta": {
      "title": "H3RelayWindowInputs"
    }
  },
  "reference_conditioning": {
    "class_type": "MiniMaxH3ReferenceToVideo",
    "inputs": {
      "clip": [
        "text_memory",
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      ],
      "prompt": "Replace the selected person with the reference character. Preserve source performance, scene and audio timing.",
      "width": [
        "dimensions",
        0
      ],
      "height": [
        "dimensions",
        1
      ],
      "length": [
        "window",
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      ],
      "ref_image_size": "match",
      "ref_videos.ref_video_0": [
        "window",
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      ],
      "ref_images.ref_image_0": [
        "reference",
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      ],
      "vae": [
        "video_vae",
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      ],
      "audio_vae": [
        "audio_vae",
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      ],
      "ref_audios.ref_audio_0": [
        "window",
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      ]
    },
    "_meta": {
      "title": "Native H3 reference conditioning"
    }
  },
  "history": {
    "class_type": "H3RelayApplyHistory",
    "inputs": {
      "positive": [
        "reference_conditioning",
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      ],
      "latent": [
        "reference_conditioning",
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        "video_vae",
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      ],
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        "audio_vae",
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        "window",
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      "history_frames": [
        "window",
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      "first_frame_guide": false,
      "target_audio_guide": true,
      "audio": [
        "window",
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      ]
    },
    "_meta": {
      "title": "H3RelayApplyHistory"
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  },
  "encode_source": {
    "class_type": "VAEEncode",
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      "pixels": [
        "window",
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      ],
      "vae": [
        "video_vae",
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      ]
    },
    "_meta": {
      "title": "VAEEncode"
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  },
  "edit_mask": {
    "class_type": "H3RelayApplyEditMask",
    "inputs": {
      "latent": [
        "history",
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      ],
      "source_latent": [
        "encode_source",
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      ],
      "mask": [
        "window",
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      ]
    },
    "_meta": {
      "title": "H3RelayApplyEditMask"
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  },
  "guide": {
    "class_type": "MiniMaxH3AddGuide",
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      "positive": [
        "history",
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      ],
      "latent": [
        "edit_mask",
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      "frame_idx": 0,
      "audio_vae": [
        "audio_vae",
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      ],
      "audio": [
        "window",
        2
      ]
    },
    "_meta": {
      "title": "Native target guide"
    }
  },
  "sampling_memory": {
    "class_type": "H3RelaySamplingMemory",
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      "model": [
        "adapter",
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      ],
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        "edit_mask",
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      ],
      "conditioning": [
        "guide",
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      "activation_memory_gib": 17.0
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    "_meta": {
      "title": "H3RelaySamplingMemory"
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  },
  "noise": {
    "class_type": "RandomNoise",
    "inputs": {
      "noise_seed": [
        "window",
        10
      ]
    },
    "_meta": {
      "title": "RandomNoise"
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  },
  "guider": {
    "class_type": "CFGGuider",
    "inputs": {
      "model": [
        "sampling_memory",
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      ],
      "positive": [
        "guide",
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      ],
      "negative": [
        "guide",
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      "cfg": 1.0
    },
    "_meta": {
      "title": "CFGGuider"
    }
  },
  "sampler": {
    "class_type": "KSamplerSelect",
    "inputs": {
      "sampler_name": "er_sde"
    },
    "_meta": {
      "title": "KSamplerSelect"
    }
  },
  "schedule": {
    "class_type": "BasicScheduler",
    "inputs": {
      "model": [
        "adapter",
        0
      ],
      "scheduler": "normal",
      "steps": 8,
      "denoise": 1.0
    },
    "_meta": {
      "title": "BasicScheduler"
    }
  },
  "sample": {
    "class_type": "SamplerCustomAdvanced",
    "inputs": {
      "noise": [
        "noise",
        0
      ],
      "guider": [
        "guider",
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      ],
      "sampler": [
        "sampler",
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      "sigmas": [
        "schedule",
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      ],
      "latent_image": [
        "edit_mask",
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      ]
    },
    "_meta": {
      "title": "SamplerCustomAdvanced"
    }
  },
  "separate": {
    "class_type": "LTXVSeparateAVLatent",
    "inputs": {
      "av_latent": [
        "sample",
        0
      ]
    },
    "_meta": {
      "title": "LTXVSeparateAVLatent"
    }
  },
  "decode": {
    "class_type": "VAEDecode",
    "inputs": {
      "samples": [
        "separate",
        0
      ],
      "vae": [
        "video_vae",
        0
      ]
    },
    "_meta": {
      "title": "VAEDecode"
    }
  },
  "append": {
    "class_type": "H3RelayAppendWindow",
    "inputs": {
      "frames": [
        "decode",
        0
      ],
      "window": [
        "window",
        12
      ],
      "previous": [
        "start",
        4
      ]
    },
    "_meta": {
      "title": "H3RelayAppendWindow"
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  },
  "end": {
    "class_type": "EndLoop",
    "inputs": {
      "output_value": [
        "append",
        0
      ],
      "next_iteration_value": [
        "append",
        0
      ],
      "accumulate": false
    },
    "_meta": {
      "title": "EndLoop"
    }
  },
  "finish": {
    "class_type": "H3RelayFinishWindows",
    "inputs": {
      "state": [
        "end",
        0
      ],
      "audio_mode": "source",
      "source_audio": [
        "prepare",
        1
      ]
    },
    "_meta": {
      "title": "H3RelayFinishWindows"
    }
  },
  "video": {
    "class_type": "CreateVideo",
    "inputs": {
      "images": [
        "finish",
        0
      ],
      "fps": [
        "finish",
        2
      ],
      "audio": [
        "finish",
        1
      ]
    },
    "_meta": {
      "title": "CreateVideo"
    }
  },
  "save": {
    "class_type": "SaveVideo",
    "inputs": {
      "video": [
        "video",
        0
      ],
      "filename_prefix": "h3-relay/character-swap",
      "format": "mp4",
      "format.codec": "h264",
      "format.codec.encoding": "re-encode",
      "format.codec.encoding.crf": 16
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    "_meta": {
      "title": "SaveVideo"
    }
  }
}