Haven’t made any changes except upgrade to the a October update, but I also possibly havent paid attention for a while to notice whether it was going into HDR ever since the update. It certainly isn’t now, even after a reboot, and confirming it was direct playing. It’s playing the movies in 4k, but SDR. Tried on multiple known good HDR movies.
Nov 01 00:59:27 osmc-Darktalon kernel: codec: Bit depth: 10-bit, Colour range: limited
Nov 01 00:59:27 osmc-Darktalon kernel: codec: Primaries: bt2020, Transfer function: smpte-st-2084, RGB-YCC: bt2020nc
Nov 01 00:59:27 osmc-Darktalon kernel: codec: No master display info
Can you post mediainfo for this video?
General
Unique ID : 64245201843876702325758460412395714869 (0x30552D01529AD56C08D7459721BEF935)
Complete name : O:\Videos\4K\Live Action Movies\Interstellar (2014)\Interstellar (2014).mkv
Format : Matroska
Format version : Version 4
File size : 33.3 GiB
Duration : 2 h 49 min
Overall bit rate mode : Variable
Overall bit rate : 28.2 Mb/s
Encoded date : UTC 2018-01-21 20:18:37
Writing application : mkvmerge v20.0.0 (‘I Am The Sun’) 64-bit
Writing library : libebml v1.3.5 + libmatroska v1.4.8
Cover : Yes
Attachments : cover.jpg
Video
ID : 1
Format : HEVC
Format/Info : High Efficiency Video Coding
Format profile : Main 10@L5.1@High
HDR format : SMPTE ST 2086, HDR10 compatible
Codec ID : V_MPEGH/ISO/HEVC
Duration : 2 h 49 min
Bit rate : 24.5 Mb/s
Width : 3 840 pixels
Height : 2 160 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 (Type 2)
Bit depth : 10 bits
Bits/(Pixel*Frame) : 0.123
Stream size : 29.0 GiB (87%)
Writing library : x265 2.6+22-ff02513b92c0:[Windows][GCC 6.3.0][64 bit] 10bit
Encoding settings : cpuid=1173503 / frame-threads=4 / numa-pools=20 / wpp / no-pmode / no-pme / no-psnr / no-ssim / log-level=2 / input-csp=1 / input-res=3840x2160 / interlace=0 / total-frames=243218 / level-idc=51 / high-tier=1 / uhd-bd=1 / ref=4 / no-allow-non-conformance / repeat-headers / annexb / aud / hrd / info / hash=0 / no-temporal-layers / no-open-gop / min-keyint=1 / keyint=24 / gop-lookahead=0 / bframes=4 / b-adapt=2 / b-pyramid / bframe-bias=0 / rc-lookahead=25 / lookahead-slices=4 / scenecut=40 / radl=0 / no-intra-refresh / ctu=64 / min-cu-size=8 / rect / no-amp / max-tu-size=32 / tu-inter-depth=1 / tu-intra-depth=1 / limit-tu=0 / rdoq-level=2 / dynamic-rd=0.00 / no-ssim-rd / signhide / no-tskip / nr-intra=0 / nr-inter=0 / no-constrained-intra / no-strong-intra-smoothing / max-merge=3 / limit-refs=3 / limit-modes / me=3 / subme=3 / merange=57 / temporal-mvp / weightp / no-weightb / no-analyze-src-pics / deblock=-3:-3 / no-sao / no-sao-non-deblock / rd=4 / no-early-skip / rskip / no-fast-intra / no-tskip-fast / no-cu-lossless / no-b-intra / no-splitrd-skip / rdpenalty=0 / psy-rd=2.00 / psy-rdoq=1.00 / no-rd-refine / no-lossless / cbqpoffs=0 / crqpoffs=0 / rc=crf / crf=17.0 / qcomp=0.60 / qpstep=4 / stats-write=0 / stats-read=0 / vbv-maxrate=160000 / vbv-bufsize=160000 / vbv-init=0.9 / crf-max=0.0 / crf-min=0.0 / ipratio=1.40 / pbratio=1.30 / aq-mode=1 / aq-strength=1.00 / cutree / zone-count=0 / no-strict-cbr / qg-size=32 / no-rc-grain / qpmax=69 / qpmin=0 / no-const-vbv / sar=1 / overscan=0 / videoformat=5 / range=0 / colorprim=9 / transfer=16 / colormatrix=9 / chromaloc=1 / chromaloc-top=2 / chromaloc-bottom=2 / display-window=0 / master-display=G(13250,34500)B(7500,3000)R(34000,16000)WP(15635,16450)L(40000000,50) / max-cll=1242,436 / min-luma=0 / max-luma=1023 / log2-max-poc-lsb=8 / vui-timing-info / vui-hrd-info / slices=1 / no-opt-qp-pps / no-opt-ref-list-length-pps / no-multi-pass-opt-rps / scenecut-bias=0.05 / no-opt-cu-delta-qp / no-aq-motion / hdr / hdr-opt / no-dhdr10-opt / analysis-save=(null) / analysis-load=(null) / analysis-reuse-level=5 / scale-factor=0 / refine-intra=0 / refine-inter=0 / refine-mv=0 / no-limit-sao / ctu-info=0 / no-lowpass-dct / refine-mv-type=0 / copy-pic=1
Default : Yes
Forced : No
Color range : Limited
Color primaries : BT.2020
Transfer characteristics : PQ
Matrix coefficients : BT.2020 non-constant
Mastering display color primaries : Display P3
Mastering display luminance : min: 0.0050 cd/m2, max: 4000 cd/m2
Maximum Content Light Level : 1242 cd/m2
Maximum Frame-Average Light Level : 436 cd/m2
Audio
ID : 2
Format : DTS XLL
Format/Info : Digital Theater Systems
Commercial name : DTS-HD Master Audio
Codec ID : A_DTS
Duration : 2 h 49 min
Bit rate mode : Variable
Bit rate : 3 686 kb/s
Channel(s) : 6 channels
Channel layout : C L R Ls Rs LFE
Sampling rate : 48.0 kHz
Frame rate : 93.750 FPS (512 SPF)
Bit depth : 24 bits
Compression mode : Lossless
Stream size : 4.35 GiB (13%)
Language : English
Default : Yes
Forced : No
Text
ID : 3
Format : PGS
Muxing mode : zlib
Codec ID : S_HDMV/PGS
Codec ID/Info : Picture based subtitle format used on BDs/HD-DVDs
Duration : 2 h 47 min
Bit rate : 31.5 kb/s
Count of elements : 4194
Stream size : 37.8 MiB (0%)
Title : English SDH
Language : English
Default : No
Forced : No
Menu
00:00:00.000 : en:00:00:00.000
00:09:35.492 : en:00:09:35.492
00:17:12.323 : en:00:17:12.323
00:25:00.749 : en:00:25:00.749
00:35:45.393 : en:00:35:45.393
00:42:16.868 : en:00:42:16.868
00:50:19.892 : en:00:50:19.892
00:54:48.076 : en:00:54:48.076
00:58:59.703 : en:00:58:59.703
01:06:15.013 : en:01:06:15.013
01:17:28.185 : en:01:17:28.185
01:25:32.002 : en:01:25:32.002
01:34:32.000 : en:01:34:32.000
01:46:14.702 : en:01:46:14.702
01:55:34.553 : en:01:55:34.553
02:02:14.369 : en:02:02:14.369
02:12:56.844 : en:02:12:56.844
02:20:53.820 : en:02:20:53.820
02:35:12.094 : en:02:35:12.094
02:43:59.830 : en:02:43:59.830
HDR. everything is playing back in SDR.
Can I please get some help?
You are using an AVR-KEY which isn’t passing through the HDR capbilities of your display. Have you perhaps set the key to SDR BT2020?
2 Likes
Oh it’s possible it got reset when I was unplugging some things >_<
sorry im almost certain thats the issue… let me go test
you were exactly correct, thank you so much and im so sorry for wasting your time 
1 Like