пт, 2 июн. 2023 г., 23:22 Andrew Randrianasulu <[email protected]>:
ср, 31 мая 2023 г., 23:53 Andrew Randrianasulu <[email protected]>:
https://aur.archlinux.org/packages/vapoursynth-plugin-awsmfunc-git
literally ...
For that? For x265 HDR param calculations, of course! :)
Unfortunately, on just dualcore notebook cpu this script works extremely slowly (0.13 fps?) but apparently it works! https://www.linux.org.ru/forum/multimedia/17247063?lastmod=1685951506829
There is another discussion on Magic Lantern forums, some users tried DVR as way to generate x265's parameters, either static or dynamic, but on their monitors dynamic hdr10+ was not really different ...
https://www.magiclantern.fm/forum/index.php?topic=26428.0
==== vastunghia <https://www.magiclantern.fm/forum/index.php?action=profile;u=87548>
« *Reply #16 on:* April 27, 2022, 01:15:21 PM » Quote from: timbytheriver on April 21, 2022, 01:13:39 PM <https://www.magiclantern.fm/forum/index.php?topic=26428.msg238612#msg238612>
Btw, did you ever get to actually see the effect of your HDR10+ metadata on your display? [image: :D]
I prepared 4 versions of the same clip, namely
- *PQ10*, i.e. PQ transfer characteristics and BT.2020 color space (no metadata at all!) - *HDR10*, namely (1) + static HDR10 metadata (mastering display color primaries + min and max luminance + MaxCLL + MaxFALL) - *HDR10+ Profile A*, namely (2) + dynamic metadata consisting of luminance distribution parameters - *HDR10+ Profile B*, namely (3) + dynamic metadata consisting of Bezier curve parameters
The clip included some very bright scenes, some more balanced scenes, as well as some very dark scenes with a few bright spots.
To assess the four versions of the clip, I photographed the TV screen from a long distance in a dark room, of course taking Raw pictures and baking them with exactly the same (somewhat neutral) settings in ACR.
The results:
- version 1 is slightly darker in all cases (this somewhat surprised me as I expected on the contrary that no metadata could lead to oversaturated / clipped highlights) - versions 3 and 4 look apparently identical (no surprise), but they seem to roll highlights (as well as shadows) slightly differently from 2, in a non-trivial way (in most, but not all cases, increasing contrast slightly)
So yes, in the end I could find some differences with my TV -- but very subtle, in many cases visible more by comparing the sample pictures histogram rather than really perceivable with the naked eye.
*Sergio*
*==== end of quote ====*
Still, I guess having those python functions cloned locally might be good idea!
Also, note they used hdr metadata output in DVR, this is reason why I looked into mpv's incomplete (in this regard) HDR support ...
Also note they used hdr10+ capable TV so, even if you do not have monitor, may be going to friend with BIIIG TV will help in some ways!