Quote:
Originally Posted by benwaggoner
For a simple baseline, try trimming the x265.exe part to:
x265.exe" --y4m - --preset slower --hdr-opt --keyint 48 --profile main10 --level-idc 5.0 --colorprim bt2020 --transfer smpte-st-2084 --colormatrix bt2020nc --hrd --vbv-bufsize 25000 --bitrate 25000 --vbv-maxrate 25000 --slow-firstpass --pass 2 --stats "test_HDR10.stats" --aud --chromaloc 2 --max-cll "1000,400" --master-display "G(13250,34500)B(7500,3000)R(34000,16000)WP(15635,16450)L(10000000,0.0050)" --output "test_HDR10.hevc
I took out the stuff inherited from y4m and the preset. I bumped it up to slower, which is where most of the HEVC features kick in, and added --hdr-opt, which fixes the sort of chroma issues it seems you're getting.
Although I'm surprised that you'd be getting any issues like that at 35 Mbps!
The whole --chromaloc 2 thing is a little suspect for me in general. It's required by UHD-BD, but I don't know that sources are ever converted to that, nor if decoders/displays correct for that in their YUV-RGB conversion. So you might removing ut_h_chr_pos etcetera from ffmpeg and remove chromaloc 2 from x265.
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my hdr settings were:
--chromaloc 2 --colorprim bt2020 --transfer smpte-st-2084 --colormatrix bt2020nc --max-cll "1000,400" --master-display "G(13250,34500)B(7500,3000)R(34000,16000)WP(15635,16450)L(10000000,50)"
i'll test your suggestions.