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OBS Studio is free, open-source software for video recording and live streaming, maintained by the OBS Project. The application captures and mixes real-time video and audio, lets users arrange multiple sources into scenes, and supports transitions, audio filters, plugins, and scripts for customization. Game streamers commonly use these capabilities to combine gameplay, cameras, graphics, and audio in a broadcast or recording. Its extensibility also allows developers to add functions through plugins, making OBS useful across a range of production workflows.