Can you insert a live photo into a slideshow in mac photo?

You can add Live Photos to the slideshow in Photos, but they will be shown as still images. If you want to see the animation, you would have to convert the Live Photos to Videoclips and use the videos for your Slideshow.

Greetings Ammospermophilus,

We understand that you have some questions about creating slideshows in Photos for Mac, and we'd like to help. begin by following the guidance found here:

Create slide shows in Photos on Mac

Take care.