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According to: https://help.gnome.org/users/gnome-help/stable/screen-shot-record.html.en

We can record our screens using Ctrl+Alt+Shift+R, works very well. But I have 2 screens or monitors. When recording, the software captures both screens, but I only need to capture one.

How can I record only one screen?

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  • See this: askubuntu.com/questions/493879/…
    – pomsky
    Dec 27, 2018 at 13:31
  • A workaround for the built-in gnome "screencast" is to temporarily switch to single-display mode (via ubuntu display settings). Quite inconvenient, but at least this way you don't need to install any third-party screen recorders.
    – djvg
    Jun 23, 2021 at 8:12

2 Answers 2

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Install Kazam, it's a great tool to record single/multiple screens
Install Kazam in Ubuntu

sudo apt install kazam

If you want to install the newer Kazam 1.5.3, you can use unofficial PPA that is available for Ubuntu 18.04 and 16.04:

sudo add-apt-repository ppa:sylvain-pineau/kazam
sudo apt-get update
sudo apt install kazam

You also need to install a few libraries in order to record the mouse clicks and keyboard presses.

sudo apt install python3-cairo python3-xlib

Source here

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  • 1
    This can record one screen/all screens/one window/some area. Thanks.
    – WesternGun
    Oct 1, 2021 at 8:01
0

Or you can simply temporary turn off second screen.

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