First time setup

To record screen in ubuntu 22.04, u need to disable wayland:

Open the config file with:
```
sudo nano /etc/gdm3/custom.conf
```
Key in password if required.
Uncomment WaylandEnable=false by removing #.
Ctrl+S to save and Ctrl+X to exit.
Make sure you have saved everything you are working on, and run.
```
sudo systemctl restart gdm3
```
Install ffmpeg and kazam
```
sudo apt install ffmpeg kazam -y
```

Subsequent screen recording

Open Kazam by searching for it from the Activities pane on the top left of the screen
To record screen, click on Screencast, and click Fullscreen
Click capture, and after 5 seconds (the default countdown), the screen will start recording.
To finish the recording, click on the camera icon on the top right of the screen, and click "Finish recording"
Save the file, preferably as in.mp4. Do not cancel, otherwise, the video will be lost.

Converting to Windows friendly format

You can find the video typically in the ~/Videos folder.
Open the folder in Files, and rename the video you want to in.mp4.
In a terminal, cd to the ~/Videos folder.
Run the following command to re-encode the video into something windows can open:
```
ffmpeg -i in.mp4 -pix_fmt yuv420p -c:a copy -movflags +faststart out.mp4
```
The output video is called out.mp4. You can now put out.mp4 into a Powerpoint presentation.