On Fri, 2021-04-16 at 11:27 -0500, Roger Heflin wrote:
given a video file and an png file to output it fails on my system also (and that is with selinux as permissive and as root, so it seems to have many issues and is simply broken in most if not all use cases), and I don't know that I have seen a video thumbnail in a while in gthumb and similar tools.
The file browsers on Gnome/MATE haven't been able to create thumbnails for video files on my computers in many years. Nothing that I tried made it work again, and I gave up long ago.
It was a handy feature being able to see some image inside of a stupidly named video file, to work out which was which.