XnView Software

Hello there, I've just registered to report this bug:

XnView: MP 1.9.5 - 64-bit
OS: Windows 11 - 64-bit

XnView stops showing thumbnails for .zip/.cbz after setting up Custom Filter for videos

Effect: XnView no longer shows thumbnails for archives

By default, XnView doesn't show thumbs for videos - you have to configure it manually. But in doing so breaks the thumbs for archives.

To reproduce:
1. Browse a folder with archives (.zip/.cbz) and make sure it displays thumbnails as normal (can be reproduced with the first run of XnViewMP portable).
2. Go to Settings -> File list -> Custom filter -> Check "Show as Thumbnail" for Video, click OK.
3. Go back to the folder with archives, it no longer show thumbnails.

Expected behaviour: both thumbnails for videos and thumbnails for archives should display.

I did a bit of troubleshooting of my own, comparing the .ini of two different instances of XnView and isolated the suspect:
In the [Browser] section, before you configure Custom Filters, it has the lines:

customFilter=65279
thumbnailFilter=65531
*(NO thumbs for videos, archives OK)

But after configuring "Show as Thumbnail" for Video, it changes it to:

customFilter=3831
thumbnailFilter=3797
*(videos OK, NO thumbs for archives)

Returning the old values to the .ini file will bring back the archives' thumbs, but the videos no longer show them. It's either one working or the other.

I've been using XnView Classic for more than a decade and today I moved on to MP. I appreciate the fantastic work you've been doing with this amazing piece of software

I tinkered with the xnview.ini and found a workaround for the bug: add '65535' to the entries in question.

customFilter=65535
thumbnailFilter=65535

This will show thumbnails both for archives and videos.