By default, Screen Recorder Studio doesn’t capture any video. To add a video source for recording:

• At the bottom section of the main window, locate the control window titled “Sources”
• Click the “+” sign or right-click and choose Add
• Pick the source you would like to capture, for instance a Display Capture, which is the entire screen of your monitor
• In the next window – Create/Select Source, give the source a unique label, and click OK