Grojm
22nd February 2018, 00:10
Hi,
I have a new 4k bluray with a 10 bit HDR movie and I now want to convert it to 1080p with x265, but keep the HDR.
I downloaded a ffmpeg binary build against 10 bit x265 and started the conversion with '-vf "scale=1920x1080"' and '-pix_fmt yuv420p10le' options. While the resultsing video is indeed encoded with the Main10 profile, the video itself looks dull and as if the HDR information was lost. I notice that metadata changed.
In the original video, there are the following tags:
colour_range : Limited
colour_primaries : BT.2020
transfer_characteristics : PQ
matrix_coefficients : BT.2020 non-constant
MasteringDisplay_ColorPrimaries : 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
MasteringDisplay_Luminance : min: 0.0050 cd/m2, max: 4000.0000 cd/m2
MaxCLL : 500 cd/m2
MaxFALL : 200 cd/m2
In my new video, these are not included any more. How can I tell ffmpeg to copy these tags?
I have a new 4k bluray with a 10 bit HDR movie and I now want to convert it to 1080p with x265, but keep the HDR.
I downloaded a ffmpeg binary build against 10 bit x265 and started the conversion with '-vf "scale=1920x1080"' and '-pix_fmt yuv420p10le' options. While the resultsing video is indeed encoded with the Main10 profile, the video itself looks dull and as if the HDR information was lost. I notice that metadata changed.
In the original video, there are the following tags:
colour_range : Limited
colour_primaries : BT.2020
transfer_characteristics : PQ
matrix_coefficients : BT.2020 non-constant
MasteringDisplay_ColorPrimaries : 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
MasteringDisplay_Luminance : min: 0.0050 cd/m2, max: 4000.0000 cd/m2
MaxCLL : 500 cd/m2
MaxFALL : 200 cd/m2
In my new video, these are not included any more. How can I tell ffmpeg to copy these tags?