A research team from Kuaishou, Peking University, and Beijing University of Posts and Telecommunications has jointly launched a significant technological achievement—the Pyramid-Flow ultra-high-definition video model. This open-source project has achieved notable breakthroughs in the field of AI-generated video, bringing new possibilities to the industry.

The Pyramid-Flow model demonstrates astonishing capabilities, capable of generating high-quality videos up to 10 seconds long, with a resolution of 1280x768 and a frame rate of 24fps, using only text input. Whether it's lighting effects, action continuity, overall image quality, text semantic restoration, or color coordination, Pyramid-Flow excels, producing videos that are truly breathtaking.

A major highlight of this technology is its efficient training process. The research team achieved such outstanding results by training for 20,700 hours on an open-source dataset using an A100 GPU. Compared to similar open-source video models on the market, Pyramid-Flow has significant advantages in terms of energy consumption and generation efficiency, which is undoubtedly a boon for resource-limited small and medium-sized enterprises and individual developers.

The core innovation of Pyramid-Flow lies in its unique "Pyramid Flow Matching" algorithm. This method cleverly decomposes the complex video generation process into multiple resolution levels, starting from a low-resolution rough sketch and gradually adding details to ultimately present a high-resolution fine video. This phased approach not only greatly reduces computational needs but also enhances the flexibility and controllability of the generation process.

Additionally, the algorithm introduces an autoregressive video generation framework and a block-wise causal attention mechanism, further enhancing the quality and continuity of the videos. These innovations enable Pyramid-Flow to generate awe-inspiring video content, from fireworks in the night sky to snowy streets in Tokyo, from black-and-white images by the Seine to dynamic tsunami scenes, each frame is vividly alive.

The open-source nature of Pyramid-Flow not only propels the development of AI video generation technology but also injects new vitality into the creative industry. Whether it's film production, advertising creativity, or personal creation, this technology provides creators with powerful tools.

Project link: https://github.com/jy0205/Pyramid-Flow

Online demo link: https://huggingface.co/spaces/Pyramid-Flow/pyramid-flow