I tried to encode a piece of the video they use to show the encoder (if they use it they think it works well with that video right?).
I took the 4k tears of steel, downscaled to full hd and encoded in h264 with my usual setting ( --level 4.1 --preset placebo --pass 2 --bitrate 1700 --deblock -2:-1 --bframes 4 --ref 4 --vbv-bufsize 50000 --vbv-maxrate 50000 --qcomp 0.8 --merange 32 --subme 10 --psy-rd 1.0:0.15) and h265 divx with the (only) profile available. I keep the bitrate low intentionally.
h265 speed was slightly better than x264 placebo, but in quality x264 is better
h264 1700 kbps
http://www.putlocker.com/file/4A0AEA1BD09D3818
h265 1700 kbps
http://www.putlocker.com/file/387BC8E4DAD298B5
h264 3000 kbps
http://www.putlocker.com/file/5B300A3220091974
h265 3000 kbps
http://www.putlocker.com/file/4758CAE945380DBD