Info about HDR needed

Help and Support Vero 4K / Vero 4K +
1

I watch a lot of .mkv remux files made from UHD discs. As you cannot remux DV as far as I know and my TV doesn’t handle HDR10+ I have to be satisfied with HDR10 or HLG.

However, I am not sure about how to find out what type of HDR a 4K remux has. For instance:

General
Unique ID : 53647785596140473655800932726808205044 (0x285C300B55E8F8D2D11833F858DF56F4)
Format : Matroska
Format version : Version 4
File size : 55.7 GiB
Duration : 1 h 30 min
Overall bit rate mode : Variable
Overall bit rate : 88.4 Mb/s
Movie name : A.Quiet.Place.2018.2160p.BluRay.REMUX.HEVC.DTS-HD.MA.TrueHD.7.1.Atmos-FGT
Encoded date : UTC 2018-07-07 23:34:48
Writing application : mkvmerge v24.0.0 (‘Beyond The Pale’) 64-bit
Writing library : libebml v1.3.6 + libmatroska v1.4.9
Cover : Yes
Attachments : small_cover.jpg / small_cover_land.jpg / cover.jpg / cover_land.jpg

Video #1
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 : 1 h 30 min
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
Title : A.Quiet.Place.2018.2160p.BluRay.REMUX.HEVC.DTS-HD.MA.TrueHD.7.1.Atmos-FGT
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: 0.0001 cd/m2, max: 1000 cd/m2

Do I read the above correctly when I say this file contains a HDR10 image?

Are their settings in my Vero 4K+ that need to be set to get the most out of this file? I read somewhere one can change stuff that relates to the chroma subsampling, but I do not understand how that works or effects play.

2

Yes, HDR10+ would report as
HDR format : SMPTE ST 2094 App 4, Version 1, HDR10+ Profile A compatible

3

Thank you. I am thinking of joining the 4.9 kernel test because of this:

  • Added support for full HDR10 metadata output (MaxFALL/MaxCLL metadata is now passed through)

Am I correct that this file I posted above would benefit from that opposed the current 3.14 kernel? Would the Vero 4K+ create a better HDR image than it does now in this particular case?

4

Yes – you’d have a better experience with 4.9 playing this file.