VideoSeal is an open-source video watermarking project developed by Facebook Research. The project includes pre-trained models, training code, inference code, and evaluation tools, all released under the MIT License. VideoSeal can embed information into video content for purposes such as copyright protection and content verification. It supports both video and image watermarking and offers benchmarks against existing state-of-the-art image watermarking technologies. Key advantages of VideoSeal include openness, efficiency, and dual support for both video and image watermarking.