madVR - high quality video renderer (GPU assisted)

[Asmodian]

It would look almost identical even on a very good 10 bit display. The difference between well dithered 8 bit and well dithered 10 bit is simply very subtle.

[Daicon]

Hi,

i am noob for here.
Have this problem:

Add images:


Same configuration settings TV



PLEX TV Oled c8 - HDR:





TV OLED c8 - Mode HDMI / MODE PC / MODE blueray
HTPC - Vega 11 - MAdvr HDR



The HDR logo is activated on TV. (this is not the problem)

Why is it lost in color?
Has anyone had problems with Vega 11?

THANKS
:-S

[Asmodian]

Are you sure it isn't your TV? That looks like a very different white point and you do not mention what mode you are using for the PLEX. Try Expert Dark Room for both. Are you using madVR's tone mapping or just passthrough?

Sorry, I have no experience with Vega.

[DMU]

Daicon

Originally Posted by Asmodian

Are you sure it isn't your TV? That looks Are you using madVR's tone mapping or just passthrough?

It is also important the FSE (exclusive) or FSW (windowed) you use for Vega. What OS?

PS: No one noticed the image changes a change in Windows10 1903 with HDR passthrought?

[Alexkral]

That's usually the difference between 709 and 2020. You're using passthrough, or "output video in HDR format" (or 2020 in calibration settings). PLEX is converting to 709.

[Asmodian]

With 2020 displayed as if it was 709 I usually get obviously lower contrast. I don't have a lot of experiance trying to judge photos of displays but the contrast seems similar on both. It looks like a white point and tone mapping difference to me, but I could be wrong.

[Alexkral]

Originally Posted by Asmodian

With 2020 displayed as if it was 709 I usually get obviously lower contrast.

That's if the PQ transfer function is not applied to the HDR 2020, but in this case it is.

EDiT: But you're right, it seems a different color temperature.

[Klaus1189]

Anybody else tested 1903 and encountered some issues?

[SamuriHL]

Nope. Been running 1903 since it dropped in insider builds a while ago. No issues for me so far.

[Daicon]

Originally Posted by Asmodian

Are you sure it isn't your TV? That looks like a very different white point and you do not mention what mode you are using for the PLEX. Try Expert Dark Room for both. Are you using madVR's tone mapping or just passthrough?

Sorry, I have no experience with Vega.

Sure.
The TV have same settings and same mode (Technicolor) with Plex and HTPC Madvr.

just passthrough.
:-(

Originally Posted by DMU

Daicon

It is also important the FSE (exclusive) or FSW (windowed) you use for Vega. What OS?

PS: No one noticed the image changes a change in Windows10 1903 with HDR passthrought?

Windows 10.
I activated FSE, but dont have any effect different. :-S

Originally Posted by Alexkral

That's usually the difference between 709 and 2020. You're using passthrough, or "output video in HDR format" (or 2020 in calibration settings). PLEX is converting to 709.

MMM
I have researched a little, and it seems that the problem continues that way ...

That is to say.
When I deactivate "passthrough", and I select in "calibration" 709, the image (SDR) is very similar in color to the HDR of PLEX (but without the brightness / etc of the HDR, of course.)
When selecting 2020, the image (SDR) becomes more muted, as it happens to me in HDR.

The problem is that I select the options that I select, when HDR is activated in full screen, I always get the SAME result as the 2nd image I have set.

Any solution?
What am I doing wrong...??

[DMU]

Originally Posted by Daicon

Windows 10.
I activated FSE, but dont have any effect different. :-S

What version of AMD drivers and Windows 10?

[Alexkral]

Originally Posted by Daicon

Any solution?

There is an issue in the c8 with some firmware not detecting the wide color gamut in PC Mode, it is supposedly corrected with firmware update (04.10.06).

[thighhighs]

Originally Posted by Klaus1189

Anybody else tested 1903 and encountered some issues?

After the update, problems started with my 720p sources. Playback is not smooth, but the OSD shows no problems For example, 1080p sources work fine, which is a bit strange for me.
Since it seems that the new madVR build will not be soon and MS focused on more important features like blur, I used the magic button and rolled back to 1803. And everything works fine again
My current setup:
R7 2700, GTX 1660 Ti, 430.64, PotPlayer x64.

[Daicon]

Originally Posted by DMU

What version of AMD drivers and Windows 10?

Lastets both.

Originally Posted by Alexkral

There is an issue in the c8 with some firmware not detecting the wide color gamut in PC Mode, it is supposedly corrected with firmware update (04.10.06).

I have firmware .15
And i try mode hdmi and pc and blueray, same result

[DMU]

Originally Posted by Klaus1189

Anybody else tested 1903 and encountered some issues?

There is an assumption that in the 1903 version FSE does not work any more. It seems to work, but like FSW.

[ryrynz]

FSE isn't working for me (1903 + latest Nvidia) but IDC 'cos I don't use it anyway.

[suanm]

Does anyone know why the two optional pulldown lists named '①color tweaks for fire and explosions; ②highlight recovery strength' go grey and they don't work when i click the button 'tone map HDR using pixel shaders'?
I don't know whats going on?What should i do to activate the two optional pulldown lists and make them work normally?

[suanm]

MadVR 0.92.17 is running on windows10 1803 OS and nvidia 385.28 display driver

[el Filou]

@suanm: uncheck "compromise on HDR tone & gamut mapping accuracy" in rendering > trade quality for performance

[Alexkral]

@Daicon

Save this as *.hlsl and load it in MPC-HC. It just convert the gamut to Rec.709 or DCI-P3. You can edit it as a text file, change the gamut option from the second line to DCI-P3 if you get oversaturation.

sampler s0 : register(s0);

static int GAMUT = 0;		//Rec.709 = 0, DCI-P3 = 1

static float m1 = 2610.0 / 4096.0 / 4;
static float m2 = 2523.0 / 4096.0 * 128;
static float c1 = 3424.0 / 4096.0;
static float c2 = 2413.0 / 4096.0 * 32;
static float c3 = 2392.0 / 4096.0 * 32;

static float3x3 Rec709 =
{
    1.660491, -0.5876411, -0.0728499,
    -0.1245505, 1.1328999, -0.0083494,
    -0.0181508, -0.1005789, 1.1187297
};

static float3x3 DCIP3 =
{
    1.3435783, -0.2821797, -0.0613986,
    -0.0652975, 1.0757879, -0.0104905,
    0.0028218, -0.0195985, 1.0167767
};

float3 PQ_EOTF(float3 Ep)
{
    float3 p = pow(Ep, 1 / m2);
    return pow(max(p - c1, 0) / (c2 - c3 * p), 1 / m1);
}

float3 PQ_OETF(float3 Fd)
{
    float3 p = pow(Fd, m1);
    return pow((c1 + c2 * p) / (1 + c3 * p), m2);
}

float4 main(float2 tex : TEXCOORD0) : COLOR
{
    float3x3 mat;
    float3 color = tex2D(s0, tex).rgb;
    color = PQ_EOTF(color);
    mat = GAMUT == 0 ? Rec709 : DCIP3;
    color = saturate(mul(mat, color));
    color = PQ_OETF(color);
    return float4(color, 1);
}