With PowerPoint 2013 or 2016, you can create screen recordings and then save video as an mp4 format. First you will need to get Office Mix for free.
Once you download Office Mix, your PowerPoint Ribbon Mix tab will look like this.
Click the Screen Recording button to get started. It will give you an option to drag a selection around the portion of the screen you want to record.
Then you receive a 3-2-1 countdown. The recording will capture any mouse movements that come into the screen space you selected.
After you stop the recording, the video will be embedded into the PowerPoint slide. Right click the video and choose save media as….mp4.
I use this to create my video demos on my blog and then upload them to YouTube. Here is my last video I created about my favorite 6 Excel tips.
The Office Mix tool is one of my favorite software application tools.