Doom9's Forum - View Single Post - HDR10 to SDR with Hable tone-mapping

Selur · 25th January 2018, 04:35

Here's how I understood it so far:

1. Luminance

Code:

Mastering display luminance              : min: 0.0001 cd/m2, max: 1000.0000 cd/m2

translates to:

Code:

L(max/0.0001,min/0.0001)=L(1000000/1)

2. Color Primaries

Code:

Mastering display color primaries        : R: x=0.680000 y=0.320000, G: x=0.265000 y=0.690000, B: x=0.150000 y=0.060000, White point: x=0.312700 y=0.329000

translates to:

Code:

G(Gx/0.00002,Gy/0.00002)B(Bx/0.00002,By/0.00002)R(R/0.00002x,Ry/0.00002)WP(Wx/0.00002,Wy/0.00002)=G(13250,34499)B(7499,2999)R(34000,15999)WP(15634,16450)

ColorPrimaries and Luminance combined give:

Code:

G(13250,34499)B(7499,2999)R(34000,15999)WP(15634,16450)L(10000000,1)

which you set under "--master-display"

3. Max CLL

Code:

Maximum Content Light Level              : 1000 cd/m2
Maximum Frame-Average Light Level        : 400 cd/m2

translates to:

Code:

--max-cll "1000,400"

Cu Selur

Ps.: Does someone know how to translate:

Code:

Transfer characteristics                 : PQ

to x265? My problem is that x265 --transfer doesn't have 'PQ'.

25th January 2018, 04:35	#35 \| Link
Selur Registered User Join Date: Oct 2001 Location: Germany Posts: 7,277	Here's how I understood it so far: 1. Luminance Code: Mastering display luminance : min: 0.0001 cd/m2, max: 1000.0000 cd/m2 translates to: Code: L(max/0.0001,min/0.0001)=L(1000000/1) 2. Color Primaries Code: Mastering display color primaries : R: x=0.680000 y=0.320000, G: x=0.265000 y=0.690000, B: x=0.150000 y=0.060000, White point: x=0.312700 y=0.329000 translates to: Code: G(Gx/0.00002,Gy/0.00002)B(Bx/0.00002,By/0.00002)R(R/0.00002x,Ry/0.00002)WP(Wx/0.00002,Wy/0.00002)=G(13250,34499)B(7499,2999)R(34000,15999)WP(15634,16450) ColorPrimaries and Luminance combined give: Code: G(13250,34499)B(7499,2999)R(34000,15999)WP(15634,16450)L(10000000,1) which you set under "--master-display" 3. Max CLL Code: Maximum Content Light Level : 1000 cd/m2 Maximum Frame-Average Light Level : 400 cd/m2 translates to: Code: --max-cll "1000,400" Cu Selur Ps.: Does someone know how to translate: Code: Transfer characteristics : PQ to x265? My problem is that x265 --transfer doesn't have 'PQ'. __________________ Hybrid here in the forum, homepage Last edited by Selur; 25th January 2018 at 05:04.