# Subtitle forcing transcode on 4k hdr content **URL:** \ **Category:** Plex Players\ **Tags:** smart-tv, samsung-tizen, server-linux-arm\ **Created:** [June 17, 2021, 8:09am UTC](https://forums.plex.tv/t/subtitle-forcing-transcode-on-4k-hdr-content/723033 "2021-06-17T08:09:50Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![lukaarma](https://avatars.discourse-cdn.com/v4/letter/l/ea666f/32.png) [@lukaarma](https://forums.plex.tv/u/lukaarma)\ **Post date:** [June 17, 2021, 8:09am UTC](https://forums.plex.tv/t/subtitle-forcing-transcode-on-4k-hdr-content/723033/1 "2021-06-17T08:09:50Z")
Server Version#: 1.23.2.4656 Player Version#: 5.17.0 Platform Version# : 3 My tv is a samsung (model QE49C7CAM) and whenever I try to play some 4k HDR content with .srt subtitle enabled it tries to transcode and fails since I have it disabled on my server (RaspberryPi 3b+). I made sure that the files were not over the bitrate and tracks limits that Samsung imposes. I made sure that audio was not transcoding as that + sub triggers a video transcode. > **mediainfo of the file I was playing** > > General > Unique ID : 39542156358437459674159070168336393783 (0x1DBF8AD4261FE5635B2CD469D1356637) > Complete name : Fury (2014) [2160p HDR H265] [ENG ITA].mkv > Format : Matroska > Format version : Version 4 > File size : 21.8 GiB > Duration : 2 h 14 min > Overall bit rate : 23.2 Mb/s > Movie name : Fury > Encoded date : UTC 2021-06-16 21:15:35 > Writing application : mkvmerge v57.0.0 (‘Till The End’) 64-bit > Writing library : libebml v1.4.2 + libmatroska v1.6.4 > > Video > ID : 1 > Format : HEVC > Format/Info : High Efficiency Video Coding > Format profile : Main 10@L5@Main > HDR format : SMPTE ST 2086, HDR10 compatible > Codec ID : V\_MPEGH/ISO/HEVC > Duration : 2 h 14 min > Bit rate : 21.9 Mb/s > Width : 3 840 pixels > Height : 1 608 pixels > Display aspect ratio : 2.40:1 > 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) : 0.148 > Stream size : 20.6 GiB (94%) > Writing library : x265 2.8+19-bcdc610cf5f0:[Windows][GCC 7.3.0][64 bit] 10bit > Encoding settings : cpuid=1111039 / frame-threads=3 / numa-pools=8 / wpp / no-pmode / no-pme / no-psnr / no-ssim / log-level=2 / input-csp=1 / input-res=3840x1608 / interlace=0 / total-frames=193680 / level-idc=0 / high-tier=1 / uhd-bd=0 / ref=4 / no-allow-non-conformance / repeat-headers / annexb / no-aud / no-hrd / info / hash=0 / no-temporal-layers / open-gop / min-keyint=23 / keyint=250 / 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 / 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=0:0 / 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=18.0 / qcomp=0.60 / qpstep=4 / stats-write=0 / stats-read=0 / ipratio=1.40 / pbratio=1.30 / aq-mode=3 / 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=0 / overscan=0 / videoformat=5 / range=0 / colorprim=9 / transfer=16 / colormatrix=9 / chromaloc=0 / display-window=0 / master-display=G(13250,34500)B(7500,3000)R(34000,16000)WP(15635,16450)L(40000000,50) / max-cll=910,310 / 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 / aq-motion / hdr / hdr-opt / no-dhdr10-opt / no-idr-recovery-sei / 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 / max-ausize-factor=1.0 / no-dynamic-refine / no-single-sei > 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 : 910 cd/m2 > Maximum Frame-Average Light Level : 310 cd/m2 > > Audio #1 > ID : 2 > Format : AAC LC > Format/Info : Advanced Audio Codec Low Complexity > Codec ID : A\_AAC-2 > Duration : 2 h 14 min > Bit rate : 662 kb/s > Channel(s) : 8 channels > Channel layout : C L R Ls Rs Lb Rb LFE > Sampling rate : 48.0 kHz > Frame rate : 46.875 FPS (1024 SPF) > Compression mode : Lossy > Delay relative to video : 20 ms > Stream size : 635 MiB (3%) > Language : English > Default : Yes > Forced : No > > Audio #2 > ID : 3 > Format : AC-3 > Format/Info : Audio Coding 3 > Commercial name : Dolby Digital > Codec ID : A\_AC3 > Duration : 2 h 14 min > Bit rate mode : Constant > Bit rate : 640 kb/s > Channel(s) : 6 channels > Channel layout : L R C LFE Ls Rs > Sampling rate : 48.0 kHz > Frame rate : 31.250 FPS (1536 SPF) > Compression mode : Lossy > Stream size : 616 MiB (3%) > Language : Italian > Service kind : Complete Main > Default : No > Forced : No > > Text #1 > ID : 4 > Format : UTF-8 > Codec ID : S\_TEXT/UTF8 > Codec ID/Info : UTF-8 Plain Text > Duration : 1 h 36 min > Bit rate : 1 b/s > Count of elements : 77 > Stream size : 1.29 KiB (0%) > Title : Forced > Language : English > Default : No > Forced : Yes > > Text #2 > ID : 5 > Format : UTF-8 > Codec ID : S\_TEXT/UTF8 > Codec ID/Info : UTF-8 Plain Text > Duration : 2 h 3 min > Bit rate : 45 b/s > Count of elements : 1469 > Stream size : 41.1 KiB (0%) > Language : English > Default : No > Forced : No > > Text #3 > ID : 6 > Format : UTF-8 > Codec ID : S\_TEXT/UTF8 > Codec ID/Info : UTF-8 Plain Text > Duration : 1 h 53 min > Bit rate : 2 b/s > Count of elements : 86 > Stream size : 1.88 KiB (0%) > Title : Forced > Language : Italian > Default : No > Forced : Yes > > Text #4 > ID : 7 > Format : UTF-8 > Codec ID : S\_TEXT/UTF8 > Codec ID/Info : UTF-8 Plain Text > Duration : 2 h 3 min > Bit rate : 41 b/s > Count of elements : 1477 > Stream size : 37.3 KiB (0%) > Language : Italian > Default : No > Forced : No > > Menu > 00:00:00.000 : Chapter 01 > 00:07:57.894 : Chapter 02 > 00:20:24.681 : Chapter 03 > 00:26:38.722 : Chapter 04 > 00:37:26.035 : Chapter 05 > 00:43:24.059 : Chapter 06 > 00:51:59.407 : Chapter 07 > 01:01:19.967 : Chapter 08 > 01:13:46.547 : Chapter 09 > 01:18:29.413 : Chapter 10 > 01:26:21.426 : Chapter 11 > 01:29:50.426 : Chapter 12 > 01:35:39.191 : Chapter 13 > 01:48:11.985 : Chapter 14 > 01:57:49.896 : Chapter 15 > 02:00:41.609 : Chapter 16 I can’t figure out what I’m doing wrong of if this is a bug, ---
**Author:** ![sulique\_gmail\_com](https://avatars.discourse-cdn.com/v4/letter/s/f6c823/32.png) [@sulique\_gmail\_com](https://forums.plex.tv/u/sulique_gmail_com)\ **Post date:** [June 24, 2021, 8:08pm UTC](https://forums.plex.tv/t/subtitle-forcing-transcode-on-4k-hdr-content/723033/2 "2021-06-24T20:08:31Z")
Have similar issue with Plex Server on Windows 1.23.4.4712. Using Plex player on my LG OLED55C8. If I use subtitles I suddenly see my 4K HDR content being streamed to my TV with massive throughput (not visible in Plex Dash, but in Task Manager - see attached screenshot). If I don’t use subtitles the throughput returns to normal value - 65Mbps. My library is on SMB fileshare (QNAP NAS). ![2021-06-24 23_15_20-](https://global.discourse-cdn.com/plex/original/3X/d/6/d607bec0a3e2d1290e582b0cc681b78962a12f5d.jpeg) ---
**Author:** ![sLumpy](https://sea1.discourse-cdn.com/plex/user_avatar/forums.plex.tv/slumpy/32/24979_2.png) [@sLumpy](https://forums.plex.tv/u/sLumpy)\ **Post date:** [June 25, 2021, 12:33am UTC](https://forums.plex.tv/t/subtitle-forcing-transcode-on-4k-hdr-content/723033/3 "2021-06-25T00:33:44Z")
Does it give you a reason for transcode? You can open playback information and it should say there. Otherwise, we’ll need some logs to diagnose (enable Log to Server in settings first, and reproduce the transcode before sending us the logs) ---
**Author:** ![lukaarma](https://avatars.discourse-cdn.com/v4/letter/l/ea666f/32.png) [@lukaarma](https://forums.plex.tv/u/lukaarma)\ **Post date:** [June 27, 2021, 2:08pm UTC](https://forums.plex.tv/t/subtitle-forcing-transcode-on-4k-hdr-content/723033/4 "2021-06-27T14:08:45Z")
@sLumpy sorry for the late replay, later this evening I’ll recreate the issue and upload the logs here ---
**Author:** ![lukaarma](https://avatars.discourse-cdn.com/v4/letter/l/ea666f/32.png) [@lukaarma](https://forums.plex.tv/u/lukaarma)\ **Post date:** [July 5, 2021, 8:17am UTC](https://forums.plex.tv/t/subtitle-forcing-transcode-on-4k-hdr-content/723033/5 "2021-07-05T08:17:03Z")
I’m really really sorry for the delay but I just didn’t have time last week to reproduce the issue…I’ll post the logs as soon as I can ---
**Author:** ![lukaarma](https://avatars.discourse-cdn.com/v4/letter/l/ea666f/32.png) [@lukaarma](https://forums.plex.tv/u/lukaarma)\ **Post date:** [July 10, 2021, 9:53pm UTC](https://forums.plex.tv/t/subtitle-forcing-transcode-on-4k-hdr-content/723033/6 "2021-07-10T21:53:41Z")
I was not able to reproduce the issue and when I checked i saw that the Plex client has been updated (now 5.19.1) since I was last able to use it, and in the patch notes I saw > Use DASH on Tizen 5.5 devices, if their PMS version is at least 1.22.1 So i guess the fix to this issue is update your Plex client and server as stated above ---
**Author:** ![system](https://global.discourse-cdn.com/plex/original/3X/2/a/2acb9765406f63293d357b4ec509ec39aa28f2ad.png) [@system](https://forums.plex.tv/u/system)\ **Post date:** [October 8, 2021, 9:54pm UTC](https://forums.plex.tv/t/subtitle-forcing-transcode-on-4k-hdr-content/723033/7 "2021-10-08T21:54:33Z")
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