Planet Earth | 1080p HDDVD Rip | HEVC x265 | AC-3

Source: Retail HDDVD boxset
Method: MakeMKV to remux, video encoded with x265, remuxed with Mkvtoolnix

Notes:

Video encode settings: x265 preset 'Slow', Constant quality 25, 10-bit colour, with further settings "--ipratio 1.1 --pbratio 1.1 --aq-mode 3 --aq-strength 0.5 --qcomp 0.8"
eac3to used to remove VC-1 pulldown flags before encoding
Average QP is around 26.41
Audio has not been reencoded
Subtitles from anoXmous via opensubtitles.org

From MediaInfo (common info only):

General
Format : Matroska
Format version : Version 4 / Version 2
Writing application : mkvmerge v8.2.0 ('World of Adventure') 64bit
Writing library : libebml v1.3.1 + libmatroska v1.4.2
_STATISTICS_WRITING_APP : mkvmerge v8.2.0 ('World of Adventure') 64bit
_STATISTICS_TAGS : BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES

Video
ID : 1
Format : HEVC
Format/Info : High Efficiency Video Coding
Format profile : Main 10@L4@Main
Codec ID : V_MPEGH/ISO/HEVC
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 23.976 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 10 bits
Writing library : x265 1.7+374-b015514a93868e2d:[Windows][GCC 5.2.0][64 bit] 10bit: KG7x [x265.ru]
Encoding settings : wpp / ctu=64 / min-cu-size=8 / max-tu-size=32 / tu-intra-depth=1 / tu-inter-depth=1 / me=3 / subme=3 / merange=57 / rect / no-amp / max-merge=3 / temporal-mvp / no-early-skip / rdpenalty=0 / no-tskip / no-tskip-fast / strong-intra-smoothing / no-lossless / no-cu-lossless / no-constrained-intra / no-fast-intra / open-gop / no-temporal-layers / interlace=0 / keyint=250 / min-keyint=23 / scenecut=40 / rc-lookahead=25 / lookahead-slices=0 / bframes=4 / bframe-bias=0 / b-adapt=2 / ref=3 / limit-refs=0 / weightp / no-weightb / aq-mode=3 / aq-strength=0.50 / cbqpoffs=0 / crqpoffs=0 / rd=4 / psy-rd=0.30 / rdoq-level=2 / psy-rdoq=1.00 / signhide / deblock / sao / no-sao-non-deblock / b-pyramid / cutree / rc=crf / crf=25.0 / qcomp=0.80 / qpmin=0 / qpmax=51 / qpstep=4 / ipratio=1.10 / pbratio=1.10
Language : English
Default : Yes
Forced : No
Color range : Limited
Color primaries : BT.709
Transfer characteristics : BT.709
Matrix coefficients : BT.709

Audio
ID : 2
Format : AC-3
Format/Info : Audio Coding 3
Mode extension : CM (complete main)
Format settings, Endianness : Big
Codec ID : A_AC3
Bit rate mode : Constant
Bit rate : 448 Kbps
Channel(s) : 6 channels
Channel positions : Front: L C R, Side: L R, LFE
Sampling rate : 48.0 KHz
Compression mode : Lossy
Title : Surround 5.1
Language : English
Default : Yes
Forced : No
_STATISTICS_WRITING_APP : mkvmerge v8.2.0 ('World of Adventure') 64bit
_STATISTICS_TAGS : BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES

Text
ID : 3
Format : UTF-8
Codec ID : S_TEXT/UTF8
Codec ID/Info : UTF-8 Plain Text
Language : English
Default : No
Forced : No