Open In mpv is a convenient web extension designed for Firefox and Chrome users who wish to enhance their video playback experience. This free tool allows users to seamlessly open videos from their web browser directly in the mpv player or any compatible player utilizing libmpv. The installation process is straightforward, requiring a companion executable that can be accessed through the project's GitHub page. Once set up, users can easily redirect video content from their browser to the mpv player, providing a more robust viewing experience.

The extension is lightweight and does not collect any user data, ensuring privacy while browsing. It requires permission to access browser tabs, which allows it to read the current webpage URL for effective functionality. Currently, it supports mpv and Celluloid players, making it a versatile option for multimedia enthusiasts looking to optimize their video playback workflow.