aufkrawall

I was testing that, then I noticed this: With ICC correction applied, mpv elevates black. This also happens with `vf=format:gamma=gamma2.4`. Black with ICC profile (same as the one linked above)...

Can also confirm the issue on Windows with `--gpu-api=d3d11` and `--vo=gpu`. Can also confirm that mpv elevates black with an ICC profile in 3x curves format without included VCGT data,...

This issue occurs (even more distinctively?) also with a sample video that represents normal video (i.e. rec709 bt1886 content): [2022-07-30 00-27-21.zip](https://github.com/mpv-player/mpv/files/9223692/2022-07-30.00-27-21.zip) Just press s (or capture screen) one time with...

Thanks, that's reassuring to know. I really wonder why I didn't notice this earlier. Perhaps because 100% black isn't a too common encounter in the wild? Anyway, don't let me...

Thanks for looking into this! Is my layman guess correct that 100% black shouldn't be elevated at all, but only near-blacks with BT.1886? It seems to be what the BT.1886...

Well, since this is the point of BT.1886 (and I think also SDR -> HDR tonemapping of mpv works similarly?), this makes sense to me if black still looks as...

Thanks again for your efforts, haasn! This sounds like bad news to me, as my profiles are created via the GUI of DisplayCal with common i1 DisplayPro with recommended spectral...

I've tested with this MR and both deband and dithering disabled, dark scenes are still a bit brighter with BT.1886 via mpv/libplacebo ICC correction than with 3D LUT generated by...

I comment out `icc-profile` when applying the 3D LUT. `lut-type=conversion` doesn't seem to make a difference with at least regard to bare eyes impression. But I created the 3D LUT...

The last two screenshots are from an actual video file. :) I think basically any very dark scene will do the trick, but I can also provide a few seconds...