README.md

---
library_name: diffusers
license: apache-2.0
tags:
- image-to-video
- image-text-to-video
- image-to-audio-video
- image-text-to-audio-video
- MOVA
- OpenMOSS
- SII
- MOSI
- sglang-diffusion
---

## MOVA: Towards Scalable and Synchronized Video–Audio Generation
We introduce **MOVA** (**MO**SS **V**ideo and **A**udio), a foundation model designed to break the "silent era" of open-source video generation. Unlike cascaded pipelines that generate sound as an afterthought, MOVA synthesizes video and audio simultaneously for perfect alignment.

🌟Key Highlights
- **Native Bimodal Generation**: Moves beyond clunky cascaded pipelines. MOVA generates high-fidelity video and synchronized audio in a single inference pass, eliminating error accumulation.
- **Precise Lip-Sync & Sound FX**: Achieves state-of-the-art performance in multilingual lip-synchronization and environment-aware sound effects.
- **Fully Open-Source**: In a field dominated by closed-source models (Sora 2, Veo 3, Kling), we are releasing model weights, inference code, training pipelines, and LoRA fine-tuning scripts. 
- **Asymmetric Dual-Tower Architecture**: Leverages the power of pre-trained video and audio towers, fused via a bidirectional cross-attention mechanism for rich modality interaction.

## Demo

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    <video width="70%" controls>
        <source src="https://cdn-uploads.huggingface.co/production/uploads/64817b8550b759c75d5d1eeb/FyB5TeOkXgAhb76fA5Pbg.mp4" type="video/mp4">
    </video>
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## Model Details

### Model Description

MOVA addresses the limitations of proprietary systems like Sora 2 and Veo 3 by offering a fully open-source framework for Image-to-Video-Audio (IT2VA) and Text-to-Video-Audio (T2VA) tasks. The model employs an asymmetric dual-tower architecture fused via a bidirectional cross-attention mechanism, leveraging a Mixture-of-Experts (MoE) design with 32B total parameters (18B active during inference) to ensure high-quality synthesis with efficient deployment. Alongside the model weights, we provide a fine-grained bimodal data pipeline and support for LoRA fine-tuning, empowering the community to advance research in synchronized cinematic synthesis.

### Model Sources

- **Github:** https://github.com/OpenMOSS/MOVA
- **Paper:** Coming soon.

### Model Usage
Please refer to the github page for model usage.

## Evaluation
We evaluate our model through both objective benchmarks and subjective human evaluations. Below are the Elo scores and win rates comparing MOVA to existing open-source models.

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    <img src="https://cdn-uploads.huggingface.co/production/uploads/64817b8550b759c75d5d1eeb/i5lgZI3NmxLXdJIxndcOp.png" width="1000"/>
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