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QingyanBai/
Ditto_models

video-to-video

QingyanBai/Ditto-1M

2510.15742

Wan-AI/Wan2.1-T2V-14B

finetune

cc-by-nc-sa-4.0

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Ditto: Scaling Instruction-Based Video Editing with a High-Quality Synthetic Dataset

This repository contains the Ditto framework and the Editto model, which are introduced in the paper Scaling Instruction-Based Video Editing with a High-Quality Synthetic Dataset. Ditto provides a holistic approach to address the scarcity of high-quality training data for instruction-based video editing, enabling the creation of the Ditto-1M dataset and the training of the state-of-the-art Editto model.

Abstract

Instruction-based video editing promises to democratize content creation, yet its progress is severely hampered by the scarcity of large-scale, high-quality training data. We introduce Ditto, a holistic framework designed to tackle this fundamental challenge. At its heart, Ditto features a novel data generation pipeline that fuses the creative diversity of a leading image editor with an in-context video generator, overcoming the limited scope of existing models. To make this process viable, our framework resolves the prohibitive cost-quality trade-off by employing an efficient, distilled model architecture augmented by a temporal enhancer, which simultaneously reduces computational overhead and improves temporal coherence. Finally, to achieve full scalability, this entire pipeline is driven by an intelligent agent that crafts diverse instructions and rigorously filters the output, ensuring quality control at scale. Using this framework, we invested over 12,000 GPU-days to build Ditto-1M, a new dataset of one million high-fidelity video editing examples. We trained our model, Editto, on Ditto-1M with a curriculum learning strategy. The results demonstrate superior instruction-following ability and establish a new state-of-the-art in instruction-based video editing.

Model Usage

1. Using with DiffSynth

Environment Setup

bash

# Create conda environment (if you already have a DiffSynth conda environment, you can reuse it)
conda create -n ditto python=3.10
conda activate ditto
pip install -e .

Download Models

Download the base model and our models from Google Drive or Hugging Face:

bash

# Download Wan-AI/Wan2.1-VACE-14B from Hugging Face to models/Wan-AI/
huggingface-cli download Wan-AI/Wan2.1-VACE-14B --local-dir models/Wan-AI/

# Download Ditto models
huggingface-cli download QingyanBai/Ditto_models --include="models/*" --local-dir ./

Usage

You can either use the provided script or run Python directly:

bash

# Option 1: Use the provided script
bash infer.sh

# Option 2: Run Python directly
python inference/infer_ditto.py \
    --input_video /path/to/input_video.mp4 \
    --output_video /path/to/output_video.mp4 \
    --prompt "Editing instruction." \
    --lora_path /path/to/model.safetensors \
    --num_frames 73 \
    --device_id 0

Some test cases could be found at HF Dataset. You can also find some reference editing prompts in inference/example_prompts.txt.

2. Using with ComfyUI

_{Note: While ComfyUI runs faster with lower computational requirements (832×480x73 videos need 11G GPU memory and ~4min on A6000), please note that due to the use of quantized and distilled models, there may be some quality degradation.}

Environment Setup

First, follow the ComfyUI installation guide to set up the base ComfyUI environment. We strongly recommend installing ComfyUI-Manager for easy custom node management:

bash

# Install ComfyUI-Manager
cd ComfyUI/custom_nodes
git clone https://github.com/Comfy-Org/ComfyUI-Manager.git

After installing ComfyUI, you can either:

Option 1 (Recommended): Use ComfyUI-Manager to automatically install all required custom nodes with the function Install Missing Custom Nodes.

Option 2: Manually install the required custom nodes (you can refer to this page):

Download Models

Download the required model weights from: Kijai/WanVideo_comfy to subfolders of models/. Required files include:

Wan2_1-T2V-14B_fp8_e4m3fn.safetensors to diffusion_models/
Wan21_CausVid_14B_T2V_lora_rank32_v2.safetensors to loras/ for inference acceleration
Wan2_1_VAE_bf16.safetensors to vae/wan/
umt5-xxl-enc-bf16.safetensors to text_encoders/

Download our models from Google Drive or Hugging Face to diffusion_models/ (use VACE Module Select node for loading).

Usage

Use the workflow ditto_comfyui_workflow.json in this repo to get started. We provided some reference prompts in the note. Some test cases could be found at HF Dataset.

_{Note: If you want to test sim2real cases, you can try prompts like 'Turn it into the real domain'.}

Citation

If you find this work useful, please consider citing our paper:

bibtex

@inproceedings{bai2026scaling,
  title={Scaling instruction-based video editing with a high-quality synthetic dataset},
  author={Bai, Qingyan and Wang, Qiuyu and Ouyang, Hao and Yu, Yue and Wang, Hanlin and Wang, Wen and Cheng, Ka Leong and Ma, Shuailei and Zeng, Yanhong and Liu, Zichen and Xu, Yinghao and Shen, Yujun and Chen, Qifeng},
  booktitle={Proceedings of the IEEE/CVF Conference on Computer Vision and Pattern Recognition},
  year={2026}
}

Acknowledgments

We thank Wan & VACE & Qwen-Image for providing the powerful foundation model, and QwenVL for the advanced visual understanding capabilities. We also thank DiffSynth-Studio serving as the codebase for this repository.

License

This project is licensed under the CC BY-NC-SA 4.0(Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License).

The code is provided for academic research purposes only.

For any questions, please contact qingyanbai@hotmail.com.