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] }, { "id": 42, "type": "UNETLoader", "pos": [ 5.282900433102316, 844.2560674126236 ], "size": [ 270, 82 ], "flags": {}, "order": 5, "mode": 0, "inputs": [ { "localized_name": "unet_name", "name": "unet_name", "type": "COMBO", "widget": { "name": "unet_name" }, "link": null }, { "localized_name": "weight_dtype", "name": "weight_dtype", "type": "COMBO", "widget": { "name": "weight_dtype" }, "link": null } ], "outputs": [ { "localized_name": "MODEL", "name": "MODEL", "type": "MODEL", "links": [ 32, 33 ] } ], "properties": { "cnr_id": "comfy-core", "ver": "0.41.0", "Node name for S&R": "UNETLoader" }, "widgets_values": [ "minimax_h3_ref2va_int8_convrot.safetensors", "default" ], "title": "Refine / upsample DiT (clean)" }, { "id": 41, "type": "MarkdownNote", "pos": [ -708, 328 ], "size": [ 640, 1400 ], "flags": {}, "order": 21, "mode": 0, "inputs": [], "outputs": [], "title": "START HERE", "properties": { "htc_card": "start" }, "widgets_values": [ "## Hand Tie Clips: start here\n\nWrite one shot per hop on **SCRIPT**; the node renders them in turn and joins each hop to the last.\n\n**Links**: [GitHub](https://github.com/sandpies/ComfyUI-Hand-Tie-Clips) · [HuggingFace](https://huggingface.co/sandpies/ComfyUI-Hand-Tie-Clips) · the full writing guide is `PROMPTING.md` in the pack folder.\n\n**Before you queue**\n- **steps 6-8** let the audio fully resolve (the author's advice); go down to 4 only with a 4-step turbo LoRA in the LoRA loader. The DiT here is the official ref2va checkpoint, with no turbo built in. Style LoRAs go in the loader too.\n- **cache_hops on**: retakes, render_from and the **TIMELINE** tab need it.\n- **upsample is on** (RUN tab): after the last hop the film is sized up to `upsample_megapixels` and re-drawn. It needs the two upsample files below; turn it off for quick tests.\n- Judge joins at **8 s** hops or longer.\n\n**Models**: the files this graph loads, and the folder each goes in.\n\n| loader | file | folder |\n|---|---|---|\n| DiT, and the refine / upsample DiT | [`minimax_h3_ref2va_int8_convrot`](https://huggingface.co/Comfy-Org/MiniMax-H3/blob/main/diffusion_models/minimax_h3_ref2va_int8_convrot.safetensors) | `diffusion_models` |\n| Text encoder | [`qwen3vl_32b_minimax_h3_int8_convrot`](https://huggingface.co/Comfy-Org/MiniMax-H3/blob/main/text_encoders/qwen3vl_32b_minimax_h3_int8_convrot.safetensors) | `text_encoders` |\n| Video VAE | [`minimax_h3_lynnreal_light_vae_int8_convrot`](https://huggingface.co/Kijai/MiniMax-H3-experimental/blob/main/minimax_h3_lynnreal_light_vae_int8_convrot.safetensors) (or the stock [`minimax_h3_video_vae_fp16`](https://huggingface.co/Comfy-Org/MiniMax-H3/blob/main/vae/minimax_h3_video_vae_fp16.safetensors)) | `vae` |\n| Audio VAE | [`minimax_h3_audio_vae_fp32`](https://huggingface.co/Comfy-Org/MiniMax-H3/blob/main/vae/minimax_h3_audio_vae_fp32.safetensors) | `vae` |\n| Live preview | [`taeh3`](https://huggingface.co/Kijai/MiniMax-H3-TAE/blob/main/vae_approx/taeh3.safetensors) | `vae_approx` |\n| Upsample size-up (`upsample_model`) | [`minimax_h3_latent_upscaler_3d_conv_v1_bf16`](https://huggingface.co/LBH-123-AI/Minimax_h3_latent_Upscaler/blob/main/minimax_h3_latent_upscaler_3d_conv_v1/minimax_h3_latent_upscaler_3d_conv_v1_bf16.safetensors) (the old name `minimax_h3_latent_upscaler_3d_bf16.safetensors` also loads). Or the 2D one, [`minimax_h3_latent_upscaler_2d_conv_v1_bf16`](https://huggingface.co/LBH-123-AI/Minimax_h3_latent_Upscaler/blob/main/minimax_h3_latent_upscaler_2d_conv_v1/minimax_h3_latent_upscaler_2d_conv_v1_bf16.safetensors), which takes `sharpness` 1-6 | `latent_upscale_models` |\n| Upsample re-draw (`regen2k`, the default upsample method) | [`open_h3_regenerate_2k_r256pp_bf16`](https://huggingface.co/sandpies/ComfyUI-H3-Video-Upsampler/blob/main/lora/open_h3_regenerate_2k_r256pp_bf16.safetensors) | `loras` |\n\n**Optional files** (`models/loras`), only for the feature named:\n- **Upsample method `ic`** (RUN tab → UPSAMPLE → **upsample method**; keeps faces, lettering and mouths exactly the film's own; slower): [`minimax_h3_open_regenerate_2k_ic_lora_avg_rank_21_bf16`](https://huggingface.co/Kijai/MiniMax-H3-experimental/blob/main/loras/minimax_h3_open_regenerate_2k_ic_lora_avg_rank_21_bf16.safetensors) (200 MB) + [`minimax_h3_hyperflow_8step_v1.0`](https://huggingface.co/videorebirth/hyperflow/blob/main/minimax_h3_hyperflow_8step_v1.0.safetensors), and [`minimax_h3_lms_v1.0_r64`](https://huggingface.co/Alissonerdx/Minimax-H3-ComfyUI/blob/main/loras/minimax_h3_lms_v1.0_r64.safetensors) if you have it. IC runs on the DiT wired to `upsample_dit`, which must be the plain [`minimax_h3_ref2va_int8_convrot`](https://huggingface.co/Comfy-Org/MiniMax-H3/blob/main/diffusion_models/minimax_h3_ref2va_int8_convrot.safetensors) with no LoRAs. fl2va, pruned and merged models cannot run it; the run stops before any hop if one is wired there.\n- **Upscale 2nd pass** (RUN tab): renders small, sizes up, then re-draws the texture at `2nd pass megapixels` (default 1.0 MP) in `2nd pass steps`: 2-3, to taste. Its LoRA slots are for your own LoRAs and use case.\n- **SWAP tab** (one-hop person swap or scene edit from a clip): [`viggle_remake_swap_comfyui`](https://huggingface.co/Viggle/Viggle-Remake/blob/main/comfyui/viggle_remake_swap_comfyui.safetensors) and [`viggle_remake_edit_comfyui`](https://huggingface.co/Viggle/Viggle-Remake/blob/main/comfyui/viggle_remake_edit_comfyui.safetensors). The node loads the right one by itself.\n\n**Custom node packs**: install from ComfyUI Manager or clone into `custom_nodes`.\n\n| pack | nodes here |\n|---|---|\n| [ComfyUI-PlagueKind-Nodes](https://github.com/PlagueKind/ComfyUI-PlagueKind-Nodes) | LoRA Loader Stack, H3 AdaLN LoRA Fix, H3 SLA Attention |\n| [ComfyUI-KJNodes](https://github.com/kijai/ComfyUI-KJNodes) | MiniMax H3 Low VRAM Attention, Model Preview Override |\n| [ComfyUI_Nvidia_VFX_Nodes](https://github.com/Comfy-Org/ComfyUI_Nvidia_VFX_Nodes) | optional: installs the `nvidia-vfx` package HTC Save Video's frame generation uses (RTX GPU) |\n\nEverything else is core ComfyUI or this pack. Missing a pack? Delete its red node and wire around it.\n\n- **The second Load Diffusion Model** feeds `refine_model` and `upsample_dit`: refine and upsample re-draw on a clean DiT, and `ic` needs it. It is not loaded while both are off.\n- **Saving:** HTC Save Video writes the MP4. `frame_gen x2` doubles the film to 48 fps inside the save (RTX GPU + `nvidia-vfx`); `off` keeps 24 fps. Leave it `off` if you will upsample the file later.\n\n**The MODEL chain stays drawn:** loader → H3 SLA Attention → LoRA loader → H3 AdaLN LoRA Fix → Low VRAM Attention → Model Preview Override → H3 Cache → this node. CLIP comes from the LoRA loader, not the encoder.\n\n**Writing**\n- One shot per hop. 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