Niklas Haas

It seems like there might be a mathematical error in our calculation of the desaturation (in `--tone-mapping-mode=luma/hybrid`). I'll look into it further in a bit.

https://code.videolan.org/videolan/libplacebo/-/merge_requests/329 this fixes the bug in the desaturation logic, to make it pick the proper desaturation factor from BT.2446a. This is not quite extreme as `--saturation=-25`, but overall saturation should...

Original (bugged, before the patch):  Original with `--target-peak=88`:  Original with `--target-peak=88 --saturation=-25`:  Fixed with `--target-peak=88`:  Fixed with no settings: (default peak)  You can clearly tell...

Oh, the new logic has a fatal flaw for more extreme tone-mapping ratios. A better function is needed.

Maybe we should just expose the peak-dependent desaturation factor as a user control.

Doesn't seem like there's an obvious issue in the metadata: ``` [vf] [out] 3840x2160 yuv420p10 bt.2020-ncl/bt.2020/pq/limited/display SP=4.926108 CL=uhd [vf] [out] 3840x2160 p010 bt.2020-ncl/bt.2020/pq/limited/display SP=4.926108 CL=uhd ``` It could be the...

Old issue, and no longer as pressing since `--gamut-mode=clip` is now the default behavior, but the likely culprit here is that `d3d11va` hwdec does not forward all HDR mastering metadata,...

> Does target-colorspace-hint affect SDR contents in Gnome Desktop Environment? I have no clue. But I strongly doubt it. > The color looks so strange when my ICC profile is...

Isn't this literally what `--hdr-compute-peak` does? Incidentally, in the past, we used to also measure the frame average brightness and darken the scene even further if needed, but that functionality...

> I don't want to be impolite, but are there any news regarding tone mapping and these problematic scenes? :-) Nope :( Better tone-mapping is unfortunately not currently at the...