OBS-Studio 18 Software is a free and open source software suite for recording and live streaming. Written in C and C++, OBS provides real-time source and device capture, scene composition, encoding, recording and broadcasting. Transmission of data is done via the Real Time Messaging Protocol and can be sent to any RTMP supporting destination (e.g. YouTube) including many presets for streaming websites such as Twitch.tv and DailyMotion.
For video encoding, OBS is capable of using the x264 free software library, Intel Quick Sync Video and Nvidia NVENC to encode video streams into the H.264/MPEG-4 AVC format. Experimental support for AMD VCE encoding was added in OBS Studio version 0.16.0. Audio can be encoded using either the MP3 or AAC codecs.