
To make a video loop in Google Slides all you have to do is present your slides then right-click on the video. When you right-click on it you'll be able to choose an option to loop the video. Watch my short video to see how it's done.
Applications for Education
Playing a video on a loop in a slide could be useful when you want to play a video to use as a welcome announcement in a virtual meeting or in a physical meeting as students are slowly joining in.
On a related note, here are ten things you should know about using videos in Google Slides.