Welcome to Doom9's Forum, THE in-place to be for everyone interested in DVD conversion. Before you start posting please read the forum rules. By posting to this forum you agree to abide by the rules. |
22nd February 2018, 00:10 | #1 | Link |
Registered User
Join Date: Mar 2016
Posts: 16
|
Convert 2160p HDR to 1080p HDR
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: Code:
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? |
22nd February 2018, 12:14 | #3 | Link |
Registered User
Join Date: Mar 2016
Posts: 16
|
So the only thing we can do is to recreate all the tags, but there is not "copy from source" switch in ffmpeg? That's bad. I opened a bug report for that: https://trac.ffmpeg.org/ticket/7037
|
Thread Tools | Search this Thread |
Display Modes | |
|
|