---
title: Sci-Fi Frame Inbetweening
emoji: 🎬
colorFrom: blue
colorTo: purple
sdk: gradio
sdk_version: 4.44.0
app_file: app.py
pinned: false
license: apache-2.0
---

# Sci-Fi: Symmetric Constraint for Frame Inbetweening

Generate smooth frame interpolation videos using CogVideoX-5B with EF-Net.

## Features

- 🎬 High-quality frame inbetweening
- ⚡ GPU-accelerated inference with Spaces GPU
- 🎨 Customizable generation parameters
- 📊 Real-time progress tracking

## Usage

1. **Setup Tab**: Load the model pipeline (required first step)
2. **Generate Tab**: Upload start and end frames, enter a prompt
3. **Advanced Settings**: Fine-tune generation parameters

## Model Details

- **Base Model**: CogVideoX-5B-I2V
- **EF-Net**: Custom enhancement network for symmetric frame constraints
- **Output**: 49 frames at 7 FPS (720x480)

## Citation

If you find this work helpful, please cite:

```bibtex
@article{chen2025sci,
  title={Sci-Fi: Symmetric Constraint for Frame Inbetweening},
  author={Chen, Liuhan and Cun, Xiaodong and Li, Xiaoyu and He, Xianyi and Yuan, Shenghai and Chen, Jie and Shan, Ying and Yuan, Li},
  journal={arXiv preprint arXiv:2505.21205},
  year={2025}
}
```

## Links

- 📄 [Paper](https://arxiv.org/abs/2505.21205)
- 🐙 [GitHub](https://github.com/GVCLab/Sci-Fi)
- 🤗 [Model Weights](https://huggingface.co/LiuhanChen/Sci-Fi)

## Requirements

- Model weights must be downloaded and placed in the appropriate directory
- See the Setup tab for configuration details