https://bugs.kde.org/show_bug.cgi?id=406935
Bug ID: 406935
Summary: 10-bit HDR (yuv420p10) videos look greyish
Product: kdenlive
Version: 19.04.0
Platform: Debian unstable
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: Video Display & Export
Assignee: j...@kdenlive.org
Reporter: l...@kaidan.im
Target Milestone: ---
Created attachment 119655
--> https://bugs.kde.org/attachment.cgi?id=119655&action=edit
Comparison between video player and kdenlive
SUMMARY
HDR Videos with 10 bit colours don't look correct: the colours are all a bit
greyish. This happens in the project monitor and also in the resulting video,
when rendered.
I also noticed that there's no option to use a 10 bit colourspace or pixel
format (like bt2020nc/bt2020/smpte2084 and yuv420p10le), the output will always
be in bt709 / yuv420p.
STEPS TO REPRODUCE
1. Add a yuv420p10le video (in my case: hevc (Main 10), yuv420p10le(tv,
bt2020nc/bt2020/smpte2084), 3840x1600 [SAR 1:1 DAR 12:5], 25 fps)
OBSERVED RESULT
Colours look greyish.
EXPECTED RESULT
Colours should look like in the video player.
SOFTWARE/OS VERSIONS
Occurs in Kdenlive 18.12.3 (debian unstable) and 19.04.0 (flatpak from
flathub).
This could also be a problem in mlt.
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