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  1. I'm trying to encode an HDR video from frames to play on TV. But I don't know why my TV does not treat the video as an HDR video, so the TV's HDR mode is not enabled.
    This is my command to encode the video from frames:
    HTML Code:
    ffmpeg -i "frame (%d).png" -i "track.wma" -r 59.940 -pix_fmt yuv420p10le -c:v libx265 -c:a aac -strict -2 -shortest -y -x265-params "colorprim=bt2020:colormatrix=bt2020nc:master-display=G(13250,34500)B(13250,34500)R(34000,16000)WP(15635,16450)L(110000000,400):max-cll=1000,400" -f mpegts -muxrate 60.0M output.mkv
    This is the metadata of my encoded video:
    HTML Code:
    General
    ID                                       : 1 (0x1)
    Complete name                            : F:\output.mkv
    Format                                   : MPEG-TS
    File size                                : 2.49 MiB
    Duration                                 : 40 ms
    Overall bit rate mode                    : Constant
    Overall bit rate                         : 60.0 Mb/s
    FileExtension_Invalid                    : ts m2t m2s m4t m4s tmf ts tp trp ty
    
    Video
    ID                                       : 256 (0x100)
    Menu ID                                  : 1 (0x1)
    Format                                   : HEVC
    Format/Info                              : High Efficiency Video Coding
    Format profile                           : Main 10@L5.1@Main
    Codec ID                                 : 36
    Duration                                 : 50 s
    Width                                    : 3 840 pixels
    Height                                   : 2 160 pixels
    Display aspect ratio                     : 16:9
    Frame rate                               : 59.940 (59940/1000) FPS
    Color space                              : YUV
    Chroma subsampling                       : 4:2:0
    Bit depth                                : 10 bits
    Writing library                          : x265 2.5:[Linux][GCC 4.8.4][64 bit] 10bit
    Encoding settings                        : cpuid=1173503 / frame-threads=1 / wpp / no-pmode / no-pme / no-psnr / no-ssim / log-level=2 / input-csp=1 / input-res=3840x2160 / interlace=0 / total-frames=0 / level-idc=0 / high-tier=1 / uhd-bd=0 / ref=3 / no-allow-non-conformance / repeat-headers / annexb / no-aud / no-hrd / info / hash=0 / no-temporal-layers / open-gop / min-keyint=25 / keyint=250 / bframes=4 / b-adapt=2 / b-pyramid / bframe-bias=0 / rc-lookahead=20 / lookahead-slices=8 / scenecut=40 / no-intra-refresh / ctu=64 / min-cu-size=8 / no-rect / no-amp / max-tu-size=32 / tu-inter-depth=1 / tu-intra-depth=1 / limit-tu=0 / rdoq-level=0 / dynamic-rd=0.00 / no-ssim-rd / signhide / no-tskip / nr-intra=0 / nr-inter=0 / no-constrained-intra / strong-intra-smoothing / max-merge=2 / limit-refs=3 / no-limit-modes / me=1 / subme=2 / merange=57 / temporal-mvp / weightp / no-weightb / no-analyze-src-pics / deblock=0:0 / sao / no-sao-non-deblock / rd=3 / no-early-skip / rskip / no-fast-intra / no-tskip-fast / no-cu-lossless / no-b-intra / rdpenalty=0 / psy-rd=2.00 / psy-rdoq=0.00 / no-rd-refine / analysis-reuse-mode=0 / no-lossless / cbqpoffs=0 / crqpoffs=0 / rc=crf / crf=28.0 / qcomp=0.60 / qpstep=4 / stats-write=0 / stats-read=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=0 / overscan=0 / videoformat=5 / range=0 / colorprim=9 / transfer=2 / colormatrix=9 / chromaloc=0 / display-window=0 / master-display=G(13250,34500)B(13250,34500)R(34000,16000)WP(15635,16450)L(5000000,400) / max-cll=500,200 / min-luma=0 / max-luma=1023 / log2-max-poc-lsb=8 / vui-timing-info / vui-hrd-info / slices=1 / opt-qp-pps / opt-ref-list-length-pps / no-multi-pass-opt-rps / scenecut-bias=0.05 / no-opt-cu-delta-qp / no-aq-motion / hdr / no-hdr-opt / no-dhdr10-opt / analysis-reuse-level=5 / scale-factor=0 / refine-intra=0 / refine-inter=0 / refine-mv=0 / no-limit-sao / ctu-info=0
    Color range                              : Limited
    Color primaries                          : BT.2020
    Matrix coefficients                      : BT.2020 non-constant
    Mastering display color primaries        : R: x=0.680000 y=0.320000, G: x=0.265000 y=0.690000, B: x=0.265000 y=0.690000, White point: x=0.312700 y=0.329000
    Mastering display luminance              : min: 0.0400 cd/m2, max: 500.0000 cd/m2
    Maximum Content Light Level              : 500 cd/m2
    Maximum Frame-Average Light Level        : 200 cd/m2
    
    Audio
    ID                                       : 257 (0x101)
    Menu ID                                  : 1 (0x1)
    Format                                   : AAC
    Format/Info                              : Advanced Audio Codec
    Format version                           : Version 4
    Format profile                           : LC
    Muxing mode                              : ADTS
    Codec ID                                 : 15
    Duration                                 : 348 ms
    Bit rate mode                            : Variable
    Channel(s)                               : 2 channels
    Channel positions                        : Front: L R
    Sampling rate                            : 44.1 kHz
    Frame rate                               : 43.066 FPS (1024 SPF)
    Compression mode                         : Lossy
    Delay relative to video                  : -23 ms
    And this is an example of metadata of an HDR video I downloaded on the internet, which is treated properly by my TV
    HTML Code:
    General
    Complete name                            : F:\10bitimages\HDR10Video\CymaticJazz\CymaticJazz.mp4
    Format                                   : MPEG-4
    Format profile                           : Base Media
    Codec ID                                 : isom (isom/iso2/mp41)
    File size                                : 1.11 GiB
    Duration                                 : 2 min 38 s
    Overall bit rate mode                    : Variable
    Overall bit rate                         : 60.1 Mb/s
    Encoded date                             : UTC 2017-06-04 23:05:26
    Tagged date                              : UTC 2017-06-04 23:05:26
    Writing application                      : Lavf57.72.101
    
    Video
    ID                                       : 1
    Format                                   : HEVC
    Format/Info                              : High Efficiency Video Coding
    Format profile                           : Main 10@L5.1@High
    Codec ID                                 : hev1
    Codec ID/Info                            : High Efficiency Video Coding
    Duration                                 : 2 min 38 s
    Bit rate                                 : 60.0 Mb/s
    Width                                    : 3 840 pixels
    Height                                   : 2 160 pixels
    Display aspect ratio                     : 16:9
    Frame rate mode                          : Variable
    Frame rate                               : 59.940 (60000/1001) FPS
    Minimum frame rate                       : 59.920 FPS
    Maximum frame rate                       : 59.960 FPS
    Color space                              : YUV
    Chroma subsampling                       : 4:2:0
    Bit depth                                : 10 bits
    Bits/(Pixel*Frame)                       : 0.121
    Stream size                              : 1.11 GiB (100%)
    Writing library                          : ATEME Titan KFE 3.7.3 (4.7.3.1003)
    Encoded date                             : UTC 2017-06-04 23:05:26
    Tagged date                              : UTC 2017-06-04 23:05:26
    Color range                              : Limited
    Color primaries                          : BT.2020
    Transfer characteristics                 : PQ
    Matrix coefficients                      : BT.2020 non-constant
    Mastering display color primaries        : R: x=0.680000 y=0.320000, G: x=0.265000 y=0.690000, B: x=0.150000 y=0.060000, White point: x=0.312700 y=0.329000
    Mastering display luminance              : min: 0.0040 cd/m2, max: 1100.0000 cd/m2
    
    Audio
    ID                                       : 2
    Format                                   : AAC
    Format/Info                              : Advanced Audio Codec
    Format profile                           : LC
    Codec ID                                 : mp4a-40-2
    Duration                                 : 2 min 38 s
    Bit rate mode                            : Variable
    Bit rate                                 : 126 kb/s
    Maximum bit rate                         : 128 kb/s
    Channel(s)                               : 2 channels
    Channel positions                        : Front: L R
    Sampling rate                            : 48.0 kHz
    Frame rate                               : 46.875 FPS (1024 SPF)
    Compression mode                         : Lossy
    Stream size                              : 2.38 MiB (0%)
    Default                                  : Yes
    Alternate group                          : 1
    Encoded date                             : UTC 2017-06-04 23:05:26
    Tagged date                              : UTC 2017-06-04 23:05:26
    What should I do to encode the HDR video properly, so that my TV will treat it as an HDR video?
    Last edited by namdvt; 13th Oct 2017 at 05:03.
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  2. I figured out the solution. I have to add "transfer=smpte-st-2084" to my encoding command.
    Quote Quote  
  3. I don't get what you mean by the TV doesn't treat it as an HDR video. Is the video not filling the entire screen up? is that what you mean?
    Quote Quote  
  4. I mean when playing an HDR video, TV recognizes it as an HDR video and the HDR mode is enabled (as attached picture). For my old encoded video, this mode is disabled and the "HDR" icon is not appeared. But now the problem is solved.
    Image Attached Thumbnails Click image for larger version

Name:	hdr.jpg
Views:	15
Size:	511.4 KB
ID:	43377  

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  5. Originally Posted by killerteengohan View Post
    I don't get what you mean by the TV doesn't treat it as an HDR video. Is the video not filling the entire screen up? is that what you mean?
    https://en.wikipedia.org/wiki/High-dynamic-range_video
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  6. the key is
    Transfer characteristics : PQ

    At least that's what it was for my Samsung TVs.

    you need to add -color_trc smpte2084 to your ffmpeg command line, or --transfer smpte2084 to x265 params.
    Quote Quote  
  7. Originally Posted by loicvan View Post
    the key is
    Transfer characteristics : PQ

    At least that's what it was for my Samsung TVs.

    you need to add -color_trc smpte2084 to your ffmpeg command line, or --transfer smpte2084 to x265 params.
    Thanks for your reply. And yes I have tested with my Samsung TVs and it worked.
    Quote Quote  



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