Reproduce “Open-Sora Plan: Open-Source Large Video Generation Model” on OpenResearch

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About this paper

Bin Lin, Yunyang Ge, Xinhua Cheng, Zongjian Li, Bin Zhu, Shaodong Wang, Xianyi He, Yang Ye and 16 more

The Open-Sora Plan project introduces an open-source framework for generating high-resolution, long-duration videos from various user inputs, re-implementing capabilities akin to proprietary models. It integrates a Wavelet-Flow VAE for efficient latent compression and a Joint Image-Video Skiparse Denoiser, achieving strong performance in video quality and control.

Key insights

  • Efficient latent compression, as demonstrated by WF-VAE with its Causal Cache, is crucial for handling long, high-resolution videos without quality loss during tiled inference.
  • A carefully designed 3D attention mechanism with Skiparse Attention can effectively balance powerful spatiotemporal modeling with computational efficiency in large video diffusion transformers.
  • A meticulous multi-dimensional data curation pipeline, including aesthetic and technical quality filtration, significantly impacts the performance of large video generation models.
  • Auxiliary strategies like adaptive gradient clipping, LLM-powered prompt refinement, and optimized data sampling are vital for stable training and improved results in large-scale video generation.

Summary by alphaXiv.

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