Skywork/SkyReels-V1-Hunyuan-I2V

Skyreels V1: Human-Centric Video Foundation Model

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This repo contains Diffusers-format model weights for SkyReels V1 Image-to-Video models. You can find the inference code on our github repository SkyReels-V1.

Introduction

SkyReels V1 is the first and most advanced open-source human-centric video foundation model. By fine-tuning HunyuanVideo on O(10M) high-quality film and television clips, Skyreels V1 offers three key advantages:

1. Open-Source Leadership: Our Text-to-Video model achieves state-of-the-art (SOTA) performance among open-source models, comparable to proprietary models like Kling and Hailuo.
2. Advanced Facial Animation: Captures 33 distinct facial expressions with over 400 natural movement combinations, accurately reflecting human emotions.
3. Cinematic Lighting and Aesthetics: Trained on high-quality Hollywood-level film and television data, each generated frame exhibits cinematic quality in composition, actor positioning, and camera angles.

🔑 Key Features

1. Self-Developed Data Cleaning and Annotation Pipeline

Our model is built on a self-developed data cleaning and annotation pipeline, creating a vast dataset of high-quality film, television, and documentary content.

• Expression Classification: Categorizes human facial expressions into 33 distinct types.
• Character Spatial Awareness: Utilizes 3D human reconstruction technology to understand spatial relationships between multiple people in a video, enabling film-level character positioning.
• Action Recognition: Constructs over 400 action semantic units to achieve a precise understanding of human actions.
• Scene Understanding: Conducts cross-modal correlation analysis of clothing, scenes, and plots.

2. Multi-Stage Image-to-Video Pretraining

Our multi-stage pretraining pipeline, inspired by the HunyuanVideo design, consists of the following stages:

• Stage 1: Model Domain Transfer Pretraining: We use a large dataset (O(10M) of film and television content) to adapt the text-to-video model to the human-centric video domain.
• Stage 2: Image-to-Video Model Pretraining: We convert the text-to-video model from Stage 1 into an image-to-video model by adjusting the conv-in parameters. This new model is then pretrained on the same dataset used in Stage 1.
• Stage 3: High-Quality Fine-Tuning: We fine-tune the image-to-video model on a high-quality subset of the original dataset, ensuring superior performance and quality.

Model Introduction

Model Name	Resolution	Video Length	FPS	Download Link
SkyReels-V1-Hunyuan-I2V (Current)	544px960p	97	24	🤗 Download
SkyReels-V1-Hunyuan-T2V	544px960p	97	24	🤗 Download

Usage

See the Guide for details.

Citation

@misc{SkyReelsV1,
  author = {SkyReels-AI},
  title = {Skyreels V1: Human-Centric Video Foundation Model},
  year = {2025},
  publisher = {Huggingface},
  journal = {Huggingface repository},
  howpublished = {\url{https://huggingface.co/Skywork/Skyreels-V1-Hunyuan-I2V}}
}