I have a Samsung phone and I use the default camera to take videos. Then, in my home wifi, I transfer the files to my server using syncthing. The folders where these files are stored is then mounted on a different computer via lan (my main machine). The videos on that machine don’t always have thumbnails and I’m not sure why. How can I track that down? At what stage should the thumbnail be generated?

Technical information (based on questions that I am asked):

  • The files are mp4
  • I’m using kubuntu 24.10
  • I’m using Dolphine file browser

Solution
On dolphin go to settings -> preview -> file size for remote storage.

  • 0x0FEnglish
    1·
    5 hours ago

    Alternately, maybe there is a maximum file size on previews?

    it’s likely this, the mp4s don’t have thumbnail embedded and dolphin is skipping the big ones