Raspberry Pi is the smallest PC in the world. It is a credit card size PC which you can keep in your pocket. In this
I have bought this from Ali Express at $44.
Desktop Screen Record on Raspbian
First, go to Start Menu and Select Add/Remove Software from Preferences sub menu.
Then in the top left corner Type the Following in the search box.
Now Select from the Search result and click on Apply. Then enter your login password & wait for install.
After installation is complete, go to start menu and select Simple Screen Recorder from Sound & Video submenu.
Now you have successfully opened the screen recording app.
How to configure Simple Screen Recorder
In the profile settings menu of SSR, select entire screen if you wish to record full display window. You can also select a particular area for capture.
You can also enable or display audio recording & mouse cursor showing from the options.
Now just select the path where you want to save recorded video file. By default this app records in MKV format.
Finally select start recording to start the capturing your desktop screen of Raspberry Pi 3 B plus on Raspbian OS.
You can also pause recording during capture from the task bar icon of SSR. To stop recording click Stop Recording.