CogVideo: Large-scale Pretraining for Text-to-Video Generation via Transformers

Wenyi Hong, Ming Ding, Wendi Zheng, Xinghan Liu, Jie Tang

Keywords: pretraining, text-to-video generation

Abstract: In this work, we present CogVideo, a 9B-parameter transformer for text-to-video generation. The CogVideo model has been trained by inheriting a pretrained text-to-image model, CogView2, which significantly reduces the training cost and alleviates the problem of scarcity and weak relevance. We also propose a multi-frame-rate training strategy for better aligning text and video clips. CogVideo achieves state-of-the-art performance in machine evaluation and outperforms publicly available models by a large margin in human evaluation. Its codes and model are also publicly available at https://github.com/THUDM/CogVideo.

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