HandBrake is now using a freshly built x265 library that enables full color depth support at 8, 10 and 12 bits. You can now convert videos in these format! This has been enabled in the 64 bit builds of the x265 library; for both Fedora 23 and CentOS/RHEL 7.
Also, NUMA support has been added to the libraries. Just by chance I have an SGI UV 200 (the predecessor of the current SGI UV 300) lying around.
This goes along with the 10 bit support for x264 that was enabled some time ago; so I’ve made some adjustments to the libraries and now there is more consistency between x264/x265. Both are loaded at runtime by HandBrake:
$ ls -alghs /usr/lib64/libx26* 668K -rwxr-xr-x. 1 root 667K Feb 5 09:55 /usr/lib64/libx264_main10.so 764K -rwxr-xr-x. 1 root 763K Feb 5 09:55 /usr/lib64/libx264.so.148 3.4M -rwxr-xr-x. 1 root 3.4M Feb 5 09:05 /usr/lib64/libx265_main10.so 3.4M -rwxr-xr-x. 1 root 3.4M Feb 5 09:05 /usr/lib64/libx265_main12.so 3.2M -rwxr-xr-x. 1 root 3.2M Feb 5 09:05 /usr/lib64/libx265.so.68