I've made several slideshows in the past week from our recent trip to South America (and many from past trips), and each incorporates stills as well as a music track and videos. Some of the videos are from my iPhone and some are from the Canon 5D Mark IV. In the latest slideshow, the videos don't play - they just display as if they were stills. I have not changed any settings, or updated any software since the videos I made last week which all worked fine.
Has any one else encountered this problem? Suggested solutions?