I have been using Virtualbox to try out the Cinnamon desktop edition in four distros: Linux Mint, Manjaro, EndeavourOS and ArcoLinuxB. The default file manager for Cinnamon is Nemo. In Nemo’s preferences, I enabled all thumbnails (show thumbnails: yes) for files smaller than 64 GB. Then, I connected to my remote network hard drive formatted with NTFS attached to my router and browsed the files, which include various images, videos and PDFs. All the thumbnails were shown properly in Linux Mint and Manjaro. However, in ArcoLinux and EndeavourOS, the image and PDF thumbnails were displayed, but they could not generate thumbnails for any of the videos.
I read the Arch wiki pages on Nemo and thumbnailers, ensured that ffmpeg and ffmpegthumbnailer were installed, installed xplayer from the AUR, installed nemo-preview, deleted ~/.cache/thumbnails and the video thumbnails were still not working. I copied one of the videos to ~/Videos and the thumbnail was generated for that video. So the thumbnailer for Nemo is not working for videos on a remote drive for ArcoLinux and EndeavourOS. ArcoLinux also had Thunar and tumbler installed by default. When I browsed my remote drive with Thunar, all thumbnails were generated. So this seems to be a problem with Nemo.
What does Linux Mint and Manjaro have which allows them to display video thumbnails on remote network shared drives with Nemo? Any other ideas for how to solve this? I don’t want to be forced to use Thunar.