OBS stands for Open Broadcaster Software, a free, open source live video production software that’s supported by a large community of developers from around the world. OBS Stream can be used for live video production, live streaming and video recording. When you first download and install OBS, a setup wizard will ask you if you would like to optimize the software for recording or live streaming because it has the ability to mix together many different audio visual sources into a live video production environment. OBS also supports many plugins which can extend its functionality to include features such as NDI support, VST plugins and stream deck controls.
I hope this information will be helpful!
Mark Wilson