This one has over 20% smaller video size than using the x264 10bit encoding. Quote: Writing library : x265 1.5+186-043c2418864b:\[Windows\]\[MSVC 1800\]\[64 bit\] 16bpp Encoding settings : wpp / ctu=64 / min-cu-size=8 / max-tu-size=32 / tu-intra-depth=3 / tu-inter-depth=3 / me=3 / subme=5 / merange=25 / no-rect / no-amp / max-merge=4 / temporal-mvp / no-early-skip / rdpenalty=0 / no-tskip / no-tskip-fast / no-strong-intra-smoothing / no-lossless / no-cu-lossless / no-constrained-intra / no-fast-intra / no-open-gop / no-temporal-layers / interlace=0 / keyint=900 / min-keyint=1 / scenecut=40 / rc-lookahead=72 / bframes=9 / bframe-bias=0 / b-adapt=2 / ref=5 / weightp / weightb / aq-mode=2 / aq-strength=1.10 / cbqpoffs=0 / crqpoffs=0 / rd=5 / psy-rd=0.90 / psy-rdoq=4.00 / signhide / lft / no-sao / no-sao-non-deblock / b-pyramid / cutree / rc=crf / crf=15.5 / qcomp=0.80 / qpmin=0 / qpmax=51 / qpstep=4 / ipratio=1.40 / pbratio=1.30 mediainfo General Unique ID : 174788462836673002747708973883812195917 (0x837F08903F9949A3AB4279C442B3AE4D) Complete name : F:\\\[philosophy-raws\]\[ToHeart2 OVAs\]\\\[philosophy-raws\]\[ToHeart2 OVAs\]\[01\]\[BDRIP\]\[HEVC Main10P FLAC\]\[1920X1080\].mkv Format : Matroska Format version : Version 4 / Version 2 File size : 443 MiB Duration : 27mn 31s Overall bit rate mode : Variable Overall bit rate : 2 252 Kbps Encoded date : UTC 2015-03-08 07:55:52 Writing application : mkvmerge v7.7.0 ('Six Voices') 64bit built on Mar 3 2015 14:40:15 Writing library : libebml v1.3.1 + libmatroska v1.4.2 \_STATISTICS\_WRITING\_APP : mkvmerge v7.7.0 ('Six Voices') 64bit built on Mar 3 2015 14:40:15 \_STATISTICS\_WRITING\_DATE\_UTC : 2015-03-08 07:55:52 \_STATISTICS\_TAGS : BPS DURATION NUMBER\_OF\_FRAMES NUMBER\_OF\_BYTES DURATION : 00:27:31.650000000 NUMBER\_OF\_FRAMES : 39600 NUMBER\_OF\_BYTES : 326009452 Video ID : 1 Format : HEVC Format/Info : High Efficiency Video Coding Codec ID : V\_MPEGH/ISO/HEVC Duration : 27mn 31s Width : 1 920 pixels Height : 1 080 pixels Display aspect ratio : 16:9 Frame rate mode : Constant Frame rate : 23.976 fps Default : Yes Forced : No Audio ID : 2 Format : FLAC Format/Info : Free Lossless Audio Codec Codec ID : A\_FLAC Duration : 27mn 31s Bit rate mode : Variable Channel(s) : 2 channels Sampling rate : 48.0 KHz Bit depth : 16 bits Writing library : libFLAC 1.3.1 (UTC 2014-11-25) Language : Japanese Default : Yes Forced : No Menu 00:00:00.000 : en:00:00:00.000 00:04:11.877 : en:00:04:11.877 00:05:46.096 : en:00:05:46.096 00:24:14.662 : en:00:24:14.662 00:25:53.594 : en:00:25:53.594