HDR videos colors are washed out with BS Player

[Gilles]

Hello,

When I play a video that is "HDR" (usually with 10bit & x265), the colors are always washed out. When I open the same video with VLC, the colors seems fine. But I don't like VLC, I much prefer BS Player (I have my reasons). Check out the differences on the screencaps attached.

I tried the menu "Video=> Color management" but whatever I do, nothing changes...

Anybody knows how to fix this problem?
My screen is not HDR but then why is VLC giving the correct colors (or at least that looks like correct). I don't care the HDR thing, I just want correct colors.

Thanks in advance

[adicoto]

Black level bug (greyish black)

Try this and probably one of the settings will provide a more accurate image.
I personally use internal renderer

[Gilles]

Hello. I tried all these "options -> preferences -> video -> video rendering" modes but none of them change anything (half of them even make BS Player crash).

[adicoto]

Can you post here which codec it's used to decode x265 ?
Open such a file -> rightclick -> options -> filters

[Gilles]

Hello. This?

[adicoto]

Ok, two things can be changed in there:
1. Output, set to TV or PC, depending on the device you use.
2. Change hardware acceleration to none. This way, decoding the video stream doesn't depend on the video card capabilities / updated drivers.

Anyway, there is no available videocard to be used for hardware decoding.

[Gilles]

I tried different combinations but no changes :(
I wonder why is VLC rendering the correct colors and BSP not. The software "Windows photos" also renders the colors well. That means my computer can render them.

Any other ideas?

[adicoto]

Yes, it can. The problem is in the software = applications and filters used to decode the file.
VLC uses it's own filters, while BSPlayer relies on LAV filters.
LE1:
Anyway, on my old PC with a TV as output, 10 bit files looks the same on both VLC and BSPlayer, while MPC-BE image is far better.

LE2:
Is it possible that BSPlayer forces 10 bit rendering (on a machine that can't render 10 bits) while other players go to 8 bits ? Because the file played by MPC-BE is rendered as: NV12 (8-bit 4:2:0) from an input stated as:
Pin: HEVC x265 10bit Video

[adicoto]

Strange thing.
Assumed that somehow LAV filters can't manage well in this configuration so went to search for another x265 decoder and found...none other.

[Gilles]

It's actually all the videos labeled as "HDR" that have the same problem.

Here are the Media infos from this video (sorry, it's French):

Vidéo
ID : 1
Format : HEVC
Format/Info : High Efficiency Video Coding
Profil du format : Main 10@L5.1@High
HDR_Format/String : SMPTE ST 2086, HDR10 compatible
Identifiant du codec : V_MPEGH/ISO/HEVC
Durée : 2 h 1 min
Débit : 4 599 kb/s
Largeur : 3 840 pixels
Hauteur : 2 076 pixels
Format à l'écran : 1,85:1
Type d'images/s : Constant
Images par seconde : 23,976 (24000/1001) Im/s
Espace de couleurs : YUV
Sous-échantillonnage de la chrominance : 4:2:0 (Type 2)
Profondeur des couleurs : 10 bits
Bits/(Pixel*Image) : 0.024
Taille du flux : 3,92 Gio (81%)
Default : Oui
Forced : Non
Gamme de couleurs : Limited
Coordonnées de chromaticité : BT.2020
Caractéristiques du transfert : PQ
Coefficients de la matrice : BT.2020 non-constant
MasteringDisplay_ColorPrimaries : BT.2020
MasteringDisplay_Luminance : min: 0.0001 cd/m2, max: 1000 cd/m2

[adicoto]

Yes, that was the ideea from the start. But i can't find x264 HDR videos free on the internet to test with another decoder. But I don't give up for now

VLC and MPC uses their own decoder when it comes to x265, whilst BSPlayer uses LAV video decoder.

If it's easier for you, you can use French with no problem.

[Gilles]

Thank you very much for your efforts. I speak +/- fluent English so it's fine for me.

All the HDR videos I have seen so far are always x265 and 10bits. However, I have plenty of x265 and 10bits videos that are not HDR and they work very well.

To give you an example of another video that is x265 + 10bits that works fine:

ID : 1
Format : HEVC
Format/Info : High Efficiency Video Coding
Profil du format : Main 10@L4@Main
Identifiant du codec : V_MPEGH/ISO/HEVC
Durée : 48 min 46s
Débit : 2 262 kb/s
Largeur : 1 920 pixels
Hauteur : 1 080 pixels
Format à l'écran : 16/9
Type d'images/s : Constant
Images par seconde : 25,000 Im/s
Espace de couleurs : YUV
Sous-échantillonnage de la chrominance : 4:2:0
Profondeur des couleurs : 10 bits
Bits/(Pixel*Image) : 0.044
Taille du flux : 789 Mio (75%)
Default : Oui
Forced : Non
Gamme de couleurs : Limited
Coordonnées de chromaticité : BT.709
Caractéristiques du transfert : BT.709
Coefficients de la matrice : BT.709

Another one:

ID : 1
Format : HEVC
Format/Info : High Efficiency Video Coding
Profil du format : Main 10@L4@Main
Identifiant du codec : V_MPEGH/ISO/HEVC
Durée : 1 h 12 min
Débit : 1 430 kb/s
Largeur : 1 920 pixels
Hauteur : 1 080 pixels
Format à l'écran : 16/9
Type d'images/s : Constant
Images par seconde : 23,976 (24000/1001) Im/s
Espace de couleurs : YUV
Sous-échantillonnage de la chrominance : 4:2:0
Profondeur des couleurs : 10 bits
Bits/(Pixel*Image) : 0.029
Taille du flux : 745 Mio (54%)
Default : Oui
Forced : Non
Gamme de couleurs : Limited
Coordonnées de chromaticité : BT.709
Caractéristiques du transfert : BT.709
Coefficients de la matrice : BT.709

[adicoto]

Surprisingly, EVR mode has better colors. It shouldn't work in Windows 10.