macOS High Sierra brought not so many useful and even useless innovations, however, it found a couple of functions that are attractive, first of all, for such a venerable application as Final Cut Pro X. The monstrous video editor was supposed to make friends with HEVC (High Efficiency Video Coding) on the day of release of macOS 10.13
The HEVC standard (H.265 with it) provides a radical 50% compression of files without loss of quality, which is most favorable for working on 4K codec projects. Clips will look amazing, and occupy disk space – 2 times less. Actually, the identical algorithm works in HEIF, only for photos.
Despite the fact that support for the H.265 codec is the only help for Final Cut Pro X on macOS High Sierra, getting it quickly won’t work, which is crazy, because the younger brother, iMovie, has already been converted to HEVC early. It turns out that for Apple it is more important than Final Cut.
There is 2 ways to encode your movie by H.265. First way is QuickTime Player and the second is Compressor 4.4.4 and later.