Xvid is a popular open-source video codec that allows users to compress and decompress digital video files. It is based on the MPEG-4 standard and is designed to provide high-quality video at lower file sizes, making it easier to store and share videos over the internet. Developed by the Xvid Team, this codec is widely used in various applications, including video streaming and file sharing. It supports a range of video resolutions and bitrates, ensuring compatibility with many devices and media players, which enhances the overall viewing experience.