XnView Software

XnViewMP 1.6.5 64bit
Windows11 (23H2), display resolution 3840x2160, win scaling 150%

Save - format
color shifts when saved into AVIF
To reproduce:
1. save any image (eg test png) into AVIF via XnViewMP (any format settings, eg lossless, 444-420) result image looks same as source
2. check source/result images in FastStone / Photoshop / MS Paint / MS Photos
colors are slightly different

not sure who exactly has issue here

ps. nomacs, online converter convert to AVIF without such issue, colors remain the same

I test one image with set ICC Profile and in my opinion issue is in MS Paint which don't look for ICC.

user0 wrote: Sun Mar 03, 2024 7:58 am ps. online converter converts to AVIF without such issue, colors remain the same

the file is HEIF not AVIF

I think it is a problem caused by WIC (Windows Imaging Component).
Mspaint decodes AVIF through WIC. WIC decoding AVIF causes color difference.

Just found out that Nomacs can save into AVIF as well (guess via heif.dll of different version), and result opens in mentioned apps without issues.
test_img.zip updated

Could the problem be that wrong ICC profile is embedded in the resulting image?

UPD 2024-04-02
noticed that AVIFs with transparency (from dell site) looks OK in XnViewMP, Nomacs and browsers, but not other apps: