Playing mkv files with DV on LG TV

[Rafik]

Hi,
recently I have checked change log which I didn't in a while. I have found this for version 13.6.0:
General
- Added support for automatic muxing of HDR streams for better video quality (e.g. Dolby Vision in MKV on LG TVs)
Renderers
- Added support for Dolby Vision in MKV on LG TVs

I have 14.0.2 version of UMS. I have LG OELD C7 and I use default LG-OLED.conf config file. When I play mkv files with Dolby Vision I just get HDR pop up on my TV. What am I doing wrong ?

[SubJunk]

I don’t think it will work with that default LG OLED conf. Is your TV not recognized by one of the more specific configs? The 2020 and 2023 configs should make that work

[Rafik]

I can force UMS to use 2023+ profile by modifying this lines:

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UserAgentSearch = OLED\d{2}[ABCEGRWZ][3-5]|LG*UR\d{4}
UpnpDetailsSearch = OLED\d{2}[ABCEGRWZ][3-5]|LG*UR\d{4}

I just have to change them to:

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UserAgentSearch = OLED\d{2}[ABCEGRWZ][3-9]|LG*UR\d{4}
UpnpDetailsSearch = OLED\d{2}[ABCEGRWZ][3-9]|LG*UR\d{4}

This doesn't make any difference. I only get HDR pop up on TV.

I tried modifying 2023+ profile because in default it doesn't have Dolby Vision in HDR for mkv files. This is the original:

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Supported = f:mkv       v:av1|h264|h265|mp4|mpeg2|vp8|vp9   a:aac-lc|ac3|dts|dtshd|he-aac|eac3|lpcm|mp3|mpa|opus           si:ASS|SUBRIP   hdr:hdr10|hlg               m:video/x-matroska

I have changed it to:

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Supported = f:mkv       v:av1|h264|h265|mp4|mpeg2|vp8|vp9   a:aac-lc|ac3|dts|dtshd|he-aac|eac3|lpcm|mp3|mpa|opus           si:ASS|SUBRIP   hdr:dolbyvision|hdr10|hlg               m:video/x-matroska

In DefaultRenderer.conf I have found this line:

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hdr:       The video HDR types supported. If none are specified, all are supported (provided they also pass the bit depth check)

So I tired run UMS with HDR parameter left blanc:

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Supported = f:mkv       v:av1|h264|h265|mp4|mpeg2|vp8|vp9   a:aac-lc|ac3|dts|dtshd|he-aac|eac3|lpcm|mp3|mpa|opus           si:ASS|SUBRIP   hdr:              m:video/x-matroska

None of that have helped. I tried 'no transcoding' trick without luck.

This is how some of my mkv files look (from MediaInfo)

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Video
ID                                       : 1
ID in the original source medium         : 4113 (0x1011)
Format                                   : HEVC
Format/Info                              : High Efficiency Video Coding
Format profile                           : Main [email protected]@High
HDR format                               : Dolby Vision, Version 1.0, Profile 7.6, dvhe.07.06, BL+EL+RPU, no metadata compression, Blu-ray compatible / SMPTE ST 2086, Version HDR10, HDR10 compatible
Codec ID                                 : V_MPEGH/ISO/HEVC
Duration                                 : 2 h 35 min
Bit rate                                 : 59.8 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)                       : 0.300
Stream size                              : 64.9 GiB (87%)
Language                                 : English
Default                                  : No
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              : 787 cd/m2
Maximum Frame-Average Light Level        : 239 cd/m2
Original source medium                   : Blu-ray

What else can I do ?

[SubJunk]

I think DV Profile 7 might not be supported this way. The files that work for my TV are reported by MediaInfo as "Dolby Vision, Version 1.0, Profile 8.1, dvhe.08.06". The filename usually says "DV.HDR" in it to indicate it has the right profile for that. I think if you try one of those files you will see the TV shows that "Dolby Vision" popup in the upper right to indicate it has worked. Please let me know if it works

[Rafik]

I have tried file which MediaInfo reports as:

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HDR format: Dolby Vision, Version 1.0, Profile 8.1, dvhe.08.06, BL+RPU, no metadata compression, HDR10 compatible / SMPTE ST 2086, Version HDR10, HDR10 compatible

When I have used clean 2020+ config file I got this for 2 seconds:

1.jpg (724.46 KiB) Viewed 7241 times

After that the file play as usual. After modifing 2020+ config with adding dolbyvision in hdr for mkv files I got just HDR pop up.

[SubJunk]

Can you post a full log zip? There are instructions at the top. There are a few things I would look for in your config and logs so it’s much faster if I have them both