OBS Studio is af free open source cross-platform to use streaming and recording. There are versions of OBS Studio available for Microsoft Windows, MacOS and Linux.

OBS provides real-time source and device capture, scene composition, encoding, recording, and broadcasting.

The main user interface is organized into five sections: scenes, sources, audio mixer, transitions, and controls. Scenes are groups of sources like live and recorded video, text and audio. The mixer panel lets the user mute the audio, and adjust the volume and apply effects by pressing the cogwheel next to the mute button. The control panel has options for starting/stopping a stream or recording, a button to transform OBS to a more professional Studio Mode, a button for opening the settings menu and a button to exit the program. The upper section has a live video preview, used to monitor and edit the current scene. The user interface can be switched to a variety of themes, including both dark and light themes, depending on what the user prefers.

When in Studio Mode, there are two canvas preview windows, the left one for modifying and preview of non-active scenes, while the right window is for preview of the live scene ("Preview" and "Program" respectively). In the middle there is a secondary transition button, allowing for transitioning to the non-active scene in the left window using user-defined "quick transitions".

Mostly in teaching and learning profession OBS is used for recording the lecture and streaming it.

The SCENE panel we can set multiple scenes as Scene 1, Scene 2, Schene 3 and so on. Net to this scene panel we can add an item that will be input to our recording like Video capture(Camera), Audio Capture(In-built speaker/ mic/headphone’s mic), Image, Slide Show, window capture, display capture, different media(other audio and video), text, colour sources and game capture and many more.

Through the audio control panel we can adjust the volume and noise. And last section has the controls to start and stop the stream and recording.

When I used it to record the video, my requirements from final output was to have a Talking head, a presentation and clear voice. For that I have created Scene 1, and into that scene one I have added Video capture through default camera on laptop, Audio capture, and window capture. The window capture record only selected window panel skipping the other background process i do while recording.

When all sets are selected I just started recording and after finishing it I have stopped recording. This is much simpler than any other available software.

While implementing the video capture the use of Green screen can help to change the background of video capture and which will focus only on me.