XnView Software

Thank you!

Folders are also displayed with thumbnails much smaller than the largest setting.

I need large thumbnails because of my 4K display, unless there's a scaling option for thumbnails?

So I select the maximum via: View » Thumbnails size » 768x576

That works fine except for videos (e.g. .mp4), even when the video resolution is greater than 768x576, and images that are not larger than ...