OBS Studio (Open Broadcasting Software Studio) is a free and open-source software program for video recording and live streaming. It can be used to capture video and audio from a variety of sources, including webcams, desktop windows, and external devices such as microphones and cameras, and then stream or record the output. The software is designed to be highly customizable, with a wide range of features such as scene transitions, filters, and plugins to enhance the output. OBS Studio is commonly used by gamers, content creators, and live streamers to record or stream their gameplay or other video content to platforms such as Twitch, YouTube, and Facebook.