2) HDR. I try in utilities "Transfer color/HDR Metadata" and it took more than 8 hours for 85% and i cancelled.
Edit:I try again and only took 4:19. I don't know what happens the first time. Maybe i started something else by mistake.
-But i found a bug. The original file is:
Chroma location: Top Left
Max. luminance: 1000.0000 cd/m²
Min. luminance: 0.0001 cd/m²
Primary R: x=0.7080 y=0.2920
Primary G: x=0.1700 y=0.7970
Primary B: x=0.1310 y=0.0460
White point: x=0.3127 y=0.3290
-And the converted file is:
Chroma location: Left (App modify this when i converted the file using "Quick Convert".)
Max. luminance: 1000.0000 cd/m²
Min. luminance: 0.0001 cd/m²
Primary R: x=0.7080 y=0.2920
Primary G: x=0.1700 y=0.7970
Primary B: x=0.0460 y=0.1310 (App modify this when i use in utilities "Transfer color/HDR Metadata".)
White point: x=0.3290 y=0.3127 (App modify this when i use in utilities "Transfer color/HDR Metadata".)
Edit 2: When i use MKVToolNix 64-bit v69.0.0 with the file created by utilities "Transfer color/HDR Metadata",
MKVToolNix throws this error and does nothing.
ERROR: Min luminance parameter: not given in the form <TID>:n (argument was '0:9.999999747378752e-05').
This guide may help you with HDR10, HDR10+.
This app is fantastic but are missing 2 important features.
1) 2pass. This guide may help you with 2pass
https://trac.ffmpeg.org/wiki/Encode/H.264
2) HDR. I try in utilities "Transfer color/HDR Metadata" and it took more than 8 hours for 85% and i cancelled.
https://github.com/n00mkrad/nmkoder/issues/new
https://old.reddit.com/r/ffmpeg/comments/rv3sm5/downscaling_4k_hdr_10bit_to_1080p_but_maintaining/hr4omtp/