media-video/ffmpegthumbnailer does not install file /usr/share/thumbnailers/ffmpegthumbnailer.thumbnailer which makes it not used by different file managers for generating video thumbnails, pcmanfm-qt in my case. Reproducible: Always Steps to Reproduce: 1. install pcmanfm-qt 2. install ffmpegthumbnailer with -gnome 3. turn on thumbnails for file manager Actual Results: There are no video thumbnails. Expected Results: There should be video thumbnails. I think just adding it by default wouldn't hurt, having ffmpegthumbnailer.thumbnailer file hidden under "Gnome support" requires user to check ebuild for clues and pcmanfm-qt has nothing to do with gnome.
Confirming: To get thumbnailing of videos in caja I had to create /usr/share/thumbnailers/ffmpegthumbnailer.thumbnailer. ffmpegthumbnailer is installed as Installed versions: 2.2.2-r1^t{tbz2}(22:46:38 01/23/23)(gtk jpeg png -gnome -test). I USE "-gnome" as I don't want gnome trying to pull in systemd--I don't know if it still does that. After copying ffmpegthumbnailer.thumbnailer from another distro, and restarting caja, I could see the new thumbnails.