I'm confused; I have an 8 and I have High Efficiency selected, but it appears I can take a photo and see it and open it on my work Win7 PC. It's a .jpg file format and seems to work just fine.

The mystery deepends with video: when I do a 4k60 video, MPC-HC is listing it as still using H264 but I thought 4k60 required H265:

Video: MPEG4 Video (H264) 3840x2160 60fps 90829kbps [V: Core Media Data Handler (h264 high L5.1, yuv420p, 3840x2160, 90829 kb/s)]

Audio: AAC 44100Hz mono 92kbps [A: Core Media Data Handler (aac lc, 44100 Hz, mono, 92 kb/s)]

What am I missing?