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#1101 | Link |
Registered User
Join Date: Mar 2025
Posts: 3
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Hello!
I did some test injecting with original metadata and modified metadata (removing some frames), and i cant see any difference seeing the film. I thought that using modified metadata, the image will flash or similar when changing scene but film goes well. What is supposed to be? Regards! |
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#1102 | Link | |
Registered User
Join Date: Dec 2010
Posts: 144
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#1103 | Link | ||||
Registered User
Join Date: Mar 2025
Posts: 1
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Hi Kuler!
I believe I may have uncovered a bug or some unintended behavior. I am trying to create a Dolby Vision Profile 8.4 file from a higher-bitrate base HLG stream and an RPU from a Dolby Vision stream that has a lower-bitrate on it's own. Besides trying to create a best-of-both-worlds hybrid file, it's also the file that will be most compatible across the most platforms. The issue I'm running into is that the DDVT tool seems to force a "color_transfer" function value of "bt2020-10" when the original HLG file used "arib-std-b67". The reason that this is important is that this breaks HLG/HDR recognition on many devices (Infuse on Apple devices, VLC on Android and others). Is there a particular reason why DDVT pigeonholes HLG files to use this color transfer function? Here's the mediainfo of the original HLG file (using Quote:
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#1104 | Link |
Registered User
Join Date: Jul 2022
Posts: 152
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Just to clarify, Kuler is the maintainer of DoVi_Scripts, -QfG- is the maintainer of DDVT.
As for the issue you're describing, I think (based on the DDVT code) it is related to dovi_tool that handles the DV stuff inside DDVT, perhaps @quietvoid can provide some more info about this. |
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#1105 | Link |
Registered User
Join Date: Jan 2019
Location: Canada
Posts: 582
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The issue is most likely that the original MKV had the transfer set in the container.
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#1106 | Link | |
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Join Date: Mar 2025
Posts: 3
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#1107 | Link |
Registered User
Join Date: Jul 2022
Posts: 152
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You've given us very little information, as the answer to your question is completely dependent on the DV RPU, and your eyes. E.g. if brightness across your RPU is mostly uniform, there is a high chance you won't notice the difference. If there is e.g. one scene that has 10 nits brightness and the next 1000 nits or the other way around and you drop a few frames, you MAY notice weird brightness changes for a brief period before a scene cut.
Last edited by GodzilaAvenger; 3rd April 2025 at 16:05. |
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#1108 | Link | |
Registered User
Join Date: Mar 2025
Posts: 3
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Quote:
This is the info regarding the file... Code:
ídeo ID : 1 Formato : HEVC Formato/Info : High Efficiency Video Coding Formato del perfil : Main 10@L5@High HDR format : SMPTE ST 2094 App 4, Version 1, HDR10+ Profile B compatible ID códec : V_MPEGH/ISO/HEVC Duración : 1 h 48 min Tasa de bits : 24,5 Mb/s Ancho : 3 840 píxeles Alto : 1 634 píxeles Relación de aspecto : 2,35:1 Modo velocidad fotogramas : Constante Velocidad de fotogramas : 23,976 FPS Espacio de color : YUV Submuestreo croma : 4:2:0 (Type 2) Profundidad bits : 10 bits Bits/(píxel*fotograma) : 0.163 Tamaño de pista : 18,6 GiB (77%) Título : The Thing Idioma : Español Default : Sí Forced : No Rango de color : Limited Colores primarios : BT.2020 Características transferencia : PQ Coeficientes matriz : BT.2020 non-constant Principios color monitor masterización : Display P3 Luminancia monitor masterización : min: 0.0050 cd/m2, max: 1000 cd/m2 Nivel ligero contenido máximo : 1034 cd/m2 Nivel ligero fotograma medio máximo : 794 cd/m2 The last test i did was to remove 60 frames from the metadata.json and injected into a 1minute clip with brighter scenes and darker scenes for seeing the difference as you told me, but i dont see anything. Im starting to thing that the hdr10+ is a fake. Not sure, so i upload the 1minute clip with original metadata, not modified. Code:
https://mega.nz/file/201QnYZD#HQd9z8-kFHJ47HpgsCDjOkiOirKi7SF8JFs9X96RGR0 Regards! |
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#1109 | Link |
Registered User
Join Date: Dec 2010
Posts: 144
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Is it possible to run the Hybrid tool to work in a batch? One folder of HDR files and another folder of DV files?
This is possible? I've had a couple instances where the Dolby stream is higher bitrate than HDR and wondered if I could add the HDR info to the Dolby stream. Last edited by Amateur; 5th April 2025 at 02:27. |
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#1110 | Link | |
Registered User
Join Date: Jul 2022
Posts: 152
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Quote:
For your case, go into the tools folder of DDVT on cmd or Powershell and run Code:
hdr10plus_tool plot metadata.json |
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#1111 | Link |
Registered User
Join Date: Jul 2007
Posts: 38
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My very small contribution to helping less techie DV/HDR fans use this great tool to make hybrid videos:
https://youtu.be/FMqhb7ppGWY
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