2018-10-20, 21:57
Hi @fritsch im watching 4K UHD channels - and I noticed the tone mapping don't work well for HLG
https://en.wikipedia.org/wiki/Hybrid_Log-Gamma
Format : MPEG-TS
File size : 3.91 GiB
Duration : 20 min 44 s
Overall bit rate mode : Variable
Overall bit rate : 27.0 Mb/s
Video
ID : 256 (0x100)
Menu ID : 1 (0x1)
Format : HEVC
Format/Info : High Efficiency Video Coding
Format profile : Main [email protected]@high
Codec ID : 36
Duration : 20 min 44 s
Bit rate : 25.4 Mb/s
Width : 3 840 pixels
Height : 2 160 pixels
Display aspect ratio : 16:9
Frame rate : 50.000 FPS
Standard : Component
Color space : YUV
Chroma subsampling : 4:2:0 (Type 0)
Bit depth : 10 bits
Bits/(Pixel*Frame) : 0.061
Stream size : 3.68 GiB (94%)
Color range : Limited
Color primaries : BT.2020
Transfer characteristics : HLG
Matrix coefficients : BT.2020 non-constant
colors maybe are not washed fully but picture is slightly dark and looks like some problem with gamma.
I can post some sample for you, I'm using coffee lake NUC with latest LE with libva 2.3.0
https://en.wikipedia.org/wiki/Hybrid_Log-Gamma
Format : MPEG-TS
File size : 3.91 GiB
Duration : 20 min 44 s
Overall bit rate mode : Variable
Overall bit rate : 27.0 Mb/s
Video
ID : 256 (0x100)
Menu ID : 1 (0x1)
Format : HEVC
Format/Info : High Efficiency Video Coding
Format profile : Main [email protected]@high
Codec ID : 36
Duration : 20 min 44 s
Bit rate : 25.4 Mb/s
Width : 3 840 pixels
Height : 2 160 pixels
Display aspect ratio : 16:9
Frame rate : 50.000 FPS
Standard : Component
Color space : YUV
Chroma subsampling : 4:2:0 (Type 0)
Bit depth : 10 bits
Bits/(Pixel*Frame) : 0.061
Stream size : 3.68 GiB (94%)
Color range : Limited
Color primaries : BT.2020
Transfer characteristics : HLG
Matrix coefficients : BT.2020 non-constant
colors maybe are not washed fully but picture is slightly dark and looks like some problem with gamma.
I can post some sample for you, I'm using coffee lake NUC with latest LE with libva 2.3.0