Fedora 30 : Introduction to Qt Designer.

Qt Designer is the Qt tool for designing and building graphical user interfaces (GUIs) with Qt Widgets... see the Qt Designer manual webpage.

[root@desk mythcat]# dnf install qt5-designer.x86_64
...
Installed:
  qt5-designer-5.12.5-1.fc30.x86_64                                             
  qt5-qttools-libs-designercomponents-5.12.5-1.fc30.x86_64                      

Complete!

Let's start this tool with this command:

[mythcat@desk ~]$ designer-qt5 

Follow this video tutorial from my youtube channel:

You can preview your work with Ctrl+R keys.
After you finish with the project then save the file with this name: mytest.ui.
The next command to create your working python file named mytest.py.
Use this command with the -x option creates the main section to the my.py file that will allow us to test quickly whether the GUI looks as we intended.

[mythcat@desk ~]$ pyuic5 -x  mytest.ui -o mytest.py

Now you can run it to see the output:

[mythcat@desk ~]$ python3  mytest.py

Fedora 30 : About Simple Screen Recorder tool.

The Simple Screen Recorder tool can be easily installed on Fedora 30 and provide a GUI interface for recording screen with audio input. Use the dnf tool to install it:

[root@desk mythcat]# dnf install simplescreenrecorder.x86_64
...
Installed:
  simplescreenrecorder-0.3.11-7.fc30.x86_64                                   

Complete!

I used the LXDE Desktop Environment, see the command to identify the running desktop environment:

[mythcat@desk ~]$ echo $XDG_CURRENT_DESKTOP
LXDE

The tool can be found on Fedora main menu: Sound & Video, see the screenshot:

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.