XnView Software

I did some tests with the new export dialog and JPEGLI settings.
I saved one picture with different sub sampling settings (4:4:4, 4:2:2 and 4:2:0).
Here are the results of the filesizes. It shows, that the sub sampling 4:2:0 produce bigger filesize than 4:2:2.
It is absolutely unusual, because 4:2:0 uses a higher compression and it produces a smaller filesize!

Then I further checked the EXIF-data of all saved jpeg files.
The EXIF informations show, that sub sampling setting 4:2:2 delivers a jpegli sub sampling of 4:2:0!
The jpegli sub sampling of 4:2:0 saves the file with 4:2:2!

Thanks to your detailed description I can reproduce the problem.

This problem is supposed to be fixed in XnView MP 1.8.2. Please check and confirm the bug fix here.

For me all is OK now (in Export and in Save As function).