The process consists of the following steps:
- Record a narrated a PowerPoint presentation.
- Save the narrated PowerPoint as a video.
This can be done by desktop versions of Microsoft PowerPoint.
1. Record a narrated PowerPoint.
Office 2013 – 2019:
https://support.office.com/en-us/article/record-a-slide-show-with-narration-and-slide-timings-0b9502c6-5f6c-40ae-b1e7-e47d8741161c#OfficeVersion=Windows
2. Save the narrated PowerPoint as a video.
Office 2016, 2019:
https://support.office.com/en-us/article/turn-your-presentation-into-a-video-c140551f-cb37-4818-b5d4-3e30815c3e83#OfficeVersion=newer
Important notice:
In order to be able to upload the video file to a site, it must be small in size, so before exporting as a video file, select Internet Quality or Low Quality.