Obs

Open Broadcaster Software (OBS) is free and open-source software for video recording and live streaming. It is designed to capture and mix audio and video in real time, with support for multiple sources and scenes. OBS runs on Windows, macOS, and Linux.

OBS Studio provides features for scene composition and source management, including window capture, screen capture, game capture, image and text overlays, and media sources. The built-in audio mixer supports per-source volume, monitoring, and filters such as noise suppression and gain. Transitions, chroma key, and a plugin interface extend functionality.

The software can stream to major platforms via RTMP and can record locally to disk. It supports hardware-accelerated encoding on compatible GPUs and a range of encoders and presets. A robust scripting and plugin ecosystem enables customization, while a user-friendly interface makes it accessible to beginners.

OBS originated as an open-source project for live broadcasting and video recording. After a major rewrite, OBS Studio became the active project, continuing development across platforms. OBS Classic is a legacy branch that is no longer maintained.

Used by gamers, educators, and content creators, OBS is widely regarded for its performance, flexibility, and cost (free). It is released under the GNU General Public License, with extensive community documentation and forums contributing to ongoing development.