Answer 1

You can use the Screen Capture API.
https://developer.mozilla.org/en-US/docs/Web/API/Screen_Capture_API/Using_Screen_Capture

Answer 2

Check this Mozilla Doc
Scroll down, there is a Simple screen capture example
https://developer.mozilla.org/en-US/docs/Web/API/Screen_Capture_API/Using_Screen_Capture

https://code.sololearn.com/Wa3a0A24a21A

Answer 3

Kaushik OP 🤙 it works on PC

Answer 4

Make screen recorder python