Joe Zeff kirjoitti 15.11.2019 klo 22.01:
I'd consider opening a BZ on ffmpegthumbs if I were you. That package is supposed to be DE agnostic, and shouldn't require that kind of dependency.
After looking into this I found that, despite its very generic-sounding name, ffmpegthumbs actually really is a KDE package: https://github.com/rpmfusion/ffmpegthumbs/blob/master/ffmpegthumbs.spec
I then also found that the root cause of my problem is being caused by Fedora not installing libgnome-keyring as a dependency of nextcloud-client: https://github.com/nextcloud/desktop/issues/427#issuecomment-538398403
At least on a fresh install of Fedora 31 installing libgnome-keyring by hand before installing nextcloud-client seems to have fixed the problem.
On a slightly unrelated note, after finding that ffmpegthumbs is actually a KDE package, I began to suspect it wasn't actually the fix to my problem with video thumbnails. Experimenting with a fresh install again I found that the fix is actually installing the "packages needed by gstreamer enabled applications" like it says here: https://rpmfusion.org/Configuration