You MUST use a HEVC compatible player in order to watch it. There are a lot out there but I recommend POTplayer.
Format : Matroska
Format version : Version 4 / Version 2
File size : 2.76 GiB
Duration : 3h 22mn
Overall bit rate : 1 957 Kbps
Encoded date : UTC 2016-05-13 14:13:14
Writing application : mkvmerge v9.0.1 ('Obstacles') 64bit
Writing library : libebml v1.3.3 + libmatroska v1.4.4
Video
ID : 1
Format : HEVC
Format/Info : High Efficiency Video Coding
Format profile : Main 10@L4@Main
Codec ID : V_MPEGH/ISO/HEVC
Duration : 3h 22mn
Bit rate : 1 752 Kbps
Width : 1 904 pixels
Height : 1 072 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 23.976 (24000/1001) fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 10 bits
Bits/(Pixel*Frame) : 0.036
Stream size : 2.47 GiB (89%)
Writing library : x265 1.9+140-34a3d35c5f97:[Windows][GCC 5.3.0][64 bit] 10bit
Encoding settings : wpp / ctu=64 / min-cu-size=8 / max-tu-size=32 / tu-intra-depth=1 / tu-inter-depth=1 / me=1 / subme=2 / merange=57 / no-rect / no-amp / max-merge=2 / 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=20 / lookahead-slices=6 / bframes=8 / bframe-bias=0 / b-adapt=2 / ref=3 / limit-refs=3 / no-limit-modes / weightp / no-weightb / aq-mode=3 / qg-size=32 / aq-strength=1.00 / cbqpoffs=0 / crqpoffs=0 / rd=3 / psy-rd=2.00 / rdoq-level=0 / psy-rdoq=0.00 / no-rd-refine / signhide / deblock=0:0 / sao / no-sao-non-deblock / b-pyramid / cutree / no-intra-refresh / rc=2 / pass / bitrate=1751 / qcomp=0.60 / qpmin=0 / qpmax=51 / qpstep=4 / cplxblur=20.0 / qblur=0.5 / ipratio=1.40 / pbratio=1.30
Default : Yes
Forced : No
Audio
ID : 2
Format : AAC
Format/Info : Advanced Audio Codec
Format profile : HE-AAC / LC
Codec ID : A_AAC
Duration : 3h 22mn
Bit rate : 204 Kbps
Channel(s) : 6 channels
Channel positions : Front: L C R, Side: L R, LFE
Sampling rate : 48.0 KHz / 24.0 KHz
Frame rate : 23.438 fps (1024 spf)
Compression mode : Lossy
Delay relative to video : 40ms
Stream size : 295 MiB (10%)
Language : English
Default : No
Forced : No
Text
ID : 3
Format : UTF-8
Codec ID : S_TEXT/UTF8
Codec ID/Info : UTF-8 Plain Text
Duration : 3h 13mn
Bit rate : 32 bps
Count of elements : 1502
Stream size : 45.8 KiB (0%)
Language : English
Default : No
Forced : No
