I think this is going to happen as H.264/HEVC seems getting high these days, especially after a Chinese online video giant xunlei.com annoucing their adoption of H.265 in their kankan video streaming service. After some lookups, I found following implementations of HEVC encoder.
- x265 (not written by x264 devs)
- HEVC reference SW
I will start evaluating all of these and see what can be done to add H.265 encoding in MediaCoder.