Photos app can't play video
i have an iPhone 7+ running iOS 11 and a 2015 MacBook Pro running High Sierra. I imported some videos (HEVC format) from my iPhone to my mac and it says that "Photos cannot play this video because it uses an unsupported format. " any ideas?
MacBook Pro (Retina, 13-inch,Early 2015), macOS High Sierra (10.13)