Make a safety shoot video in Zoom
Start with the following throwaway line.
"my idea is..."
Open Zoom and select New Meeting
The meeting video window opens.
(If you want to display your screen select the green button)
Click on Record to record your session and confirm permission to record.
Click pause/stop to control the recording session.
Your mp4 file will be stored at the location specified under Settings>Recording (either local or cloud)