[root@desk mythcat]# dnf install simplescreenrecorder.x86_64
...
Installed:
  simplescreenrecorder-0.3.11-7.fc30.x86_64                                   
Complete!
[mythcat@desk ~]$ echo $XDG_CURRENT_DESKTOP
LXDE
The tool start with this windows screen, you need to press the Continue button:

The next steps comes with configuration area for your video recorder.
I set and save my new Input profile to record an screen area.
You can use a rectangle, change the size from left to right or select the window to define the area for record video.
I change the Audio input to use my microphone.

The next step let you to set the file , video and audio settings for output. I let all with default settings.

The last step let you to see informations , preview and set the hotkeys.
I can use keyboard to start and stop recorder.
 
