HEVC support is hardware accelerated on Apple's recent Macs with Intel Kaby Lake processors, starting with the 2015 27-inch iMac, the early 2016 MacBook, and the 2016 MacBook Pro. The AMD Radeon Pro chipset included in the 2016 MacBook Pro also includes HEVC decoding support. Some Nvidia GPUs such as the GTX 9 and 10 series cards do as well.
https://support.apple.com/zh-cn/HT208363
If you're using Final Cut Pro X 10.4, Motion 5.4 or Compressor 4.4 on a Mac running macOS Sierra, Update your Mac to macOS High Sierra.
再來複習一下新聞發布 macOS High Sierra 為儲存方式、影片播放與繪圖技術帶來先進技術 https://www.apple.com/tw/newsroom/2017/06/macos-high-sierra-delivers-advanced-technologies-for-storage-video-and-graphics/