---
base_model: zai-org/SCAIL-2
tags:
- quantization
- gguf
- comfyui
- image-to-video
- character-animation
- wan2.1
license: mit
---
# SCAIL-2 GGUFs (by Rebel AI)
---
---
GGUF quantizations of **SCAIL-2**, the end-to-end character-animation / video motion-transfer model (Wan 2.1 14B backbone) from [zai-org](https://huggingface.co/zai-org/SCAIL-2). These run the SCAIL-2 DiT in ComfyUI at a fraction of the VRAM the full fp16/fp8 weights require.

Quantized by **[RealRebelAI](https://huggingface.co/realrebelai)** · [GitHub](https://github.com/RealRebelAI) · [YouTube](https://youtube.com/@RealRebelAI)

> ⚡ **Load with the GGUF Unet Loader** (city96's [ComfyUI-GGUF](https://github.com/city96/ComfyUI-GGUF) — `Unet Loader (GGUF)`). Place the `.gguf` in `ComfyUI/models/unet/`.
---
## Quant tiers

| Tier | Approx size | Notes |
|------|-------------|-------|
| Q2_K | ~6 GB | Smallest — runs on minimal VRAM, expect quality loss |
| Q3_K_M | ~8.1 GB | Budget tier, better coherence than Q2 |
| Q4_K_M | ~10 GB | Recommended daily driver |
| Q5_K_M | ~12 GB | Sweet spot above Q4 |
| Q6_K | ~14 GB | Higher fidelity |
| Q8_0 | ~17 GB | Closest to fp16 |

The loader memory-maps the model, so a larger file costs disk and streaming time, **not** resident RAM.
---
## Required files (NOT included in this repo)

Download each of these separately and place them in the listed ComfyUI folder.

### 📝 Text Encoder
`ComfyUI/models/text_encoders/`
<https://huggingface.co/Kijai/WanVideo_comfy/blob/main/umt5-xxl-enc-fp8_e4m3fn.safetensors>

### 🎛️ LoRA (LightX2V step/cfg distill)
`ComfyUI/models/loras/`
<https://huggingface.co/lightx2v/Wan2.1-I2V-14B-480P-StepDistill-CfgDistill-Lightx2v/blob/main/loras/Wan21_I2V_14B_lightx2v_cfg_step_distill_lora_rank64.safetensors>

### 🎯 SAM 3.1 Multiplex
`ComfyUI/models/sam/`
<https://huggingface.co/Comfy-Org/sam3.1/blob/main/checkpoints/sam3.1_multiplex_fp16.safetensors>

### 👁️ CLIP Vision
`ComfyUI/models/clip_vision/`
<https://huggingface.co/Comfy-Org/Wan_2.1_ComfyUI_repackaged/blob/main/split_files/clip_vision/clip_vision_h.safetensors>

### 🎨 VAE
`ComfyUI/models/vae/`
<https://huggingface.co/Comfy-Org/Wan_2.1_ComfyUI_repackaged/blob/main/split_files/vae/wan_2.1_vae.safetensors>

### ➕ Optional: SCAIL-2 DPO LoRA *(untested)*
`ComfyUI/models/loras/`
<https://huggingface.co/Comfy-Org/SCAIL-2/blob/main/loras/wan2.1_SCAIL_2_DPO_lora_bf16.safetensors>

---

## Folder structure

```
ComfyUI/models/
├── unet/
│   └── SCAIL-2-Q4_K_M.gguf            ← from this repo
├── text_encoders/
│   └── umt5-xxl-enc-fp8_e4m3fn.safetensors
├── loras/
│   ├── Wan21_I2V_14B_lightx2v_cfg_step_distill_lora_rank64.safetensors
│   └── wan2.1_SCAIL_2_DPO_lora_bf16.safetensors   (optional)
├── sam/
│   └── sam3.1_multiplex_fp16.safetensors
├── clip_vision/
│   └── clip_vision_h.safetensors
└── vae/
    └── wan_2.1_vae.safetensors
```
---
---
## Generated Examples
Here are some outputs from the model:
<div style="display: flex; gap: 10px;">
  <video controls autoplay loop muted style="width: 50%;" src="https://huggingface.co/realrebelai/SCAIL-2_GGUF/resolve/main/Wan21_SCAIL2_00004-audio.mp4"></video>
  <video controls autoplay loop muted style="width: 50%;" src="https://huggingface.co/realrebelai/SCAIL-2_GGUF/resolve/main/Wan21_SCAIL2_00005-audio.mp4"></video>
</div>
---

---
## Notes

- **`WEIGHT NOT MERGED` warning on `patch_embedding` is harmless.** ComfyUI builds a 36-channel patch embedding and concatenates the mask channels at runtime; the model fills them internally. The stored 20-channel weight is expected. Generation proceeds normally.
- **The colored mask is a required input** even in single-character Animation Mode — don't remove it from the workflow.
- Set width and height **explicitly** (both divisible by 16; 832×480 is a good 480p start).
- The `SCAIL2ColoredMask` node may require a recent / nightly ComfyUI build.

---

## Credits

- **Model:** [zai-org / SCAIL-2](https://huggingface.co/zai-org/SCAIL-2)
- **GGUF quantization:** [RealRebelAI](https://huggingface.co/realrebelai)
- **GGUF tooling:** [city96 / ComfyUI-GGUF](https://github.com/city96/ComfyUI-GGUF)