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
  • marl_karx@lemmygrad.ml
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    5 hours ago

    try installing ffmpegthumbnailer and see if that works after reboot / relogin, if not uninstall and try another method

  • liliumstar@lemmy.dbzer0.com
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    8 hours ago

    In this scenario, the thumbnails are going to be generated when you browse the directory. Probably what network filesystem you’re using. Alternately, maybe there is a maximum file size on previews? I know dolphin has that option.

    • 0x0F@lemmy.blahaj.zone
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      23 minutes 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

  • Mactan@lemmy.ml
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    15 hours ago

    dumb dolphin thing I forget every couple years, F12 toggles thumbnails on and off

  • just_another_person@lemmy.world
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    17 hours ago

    Do a test: copy a bunch of videos directly from your phone to a test folder separate from the current one you use. See if all of the files get thumbnails.

  • catloaf@lemm.ee
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    18 hours ago

    What format are the files? What are you using to view the thumbnails?

    • a new sad me@lemmy.worldOP
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      17 hours ago

      Important questions, I’ve added this to my original post:

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