The user interface can be switched to a variety of themes, including both dark and light themes, depending on what the user prefers. The upper section has a live video preview, used to monitor and edit the current scene. The control panel has options for starting/stopping a stream or recording, a button to transform OBS to a more professional Studio Mode (see below), a button for opening the settings menu and a button to exit the program. The mixer panel lets the user mute the audio, and adjust the volume through virtual faders, and apply effects by pressing the cogwheel next to the mute button. Scenes are groups of sources like live and recorded video, text and audio. The main user interface is organized into five sections: scenes, sources, audio mixer, transitions, and controls. Advanced users can choose to use any codecs and containers available in libavcodec / libavformat as well as output the stream to a custom ffmpeg URL. Multiple tracks of audio can be encoded using the AAC codec. Transmission of data is primarily done via the Real Time Messaging Protocol (RTMP) and can be sent to any RTMP supporting destination, including many presets for streaming websites such as YouTube, Twitch, Instagram and Facebook.įor video encoding, OBS Studio is capable of using the x264 free software library, Intel Quick Sync Video, Nvidia NVENC and the AMD Video Coding Engine to encode video streams into the H.264/MPEG-4 AVC format and the H.265/HEVC format.

Written in C, C++ and Qt, OBS provides real-time source and device capture, scene composition, encoding, recording, and broadcasting. OBS Studio is a free and open-source software suite for recording and live streaming.

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