Does anybody know why and when thumbnails for YouTube videos are shown or not? It appears to depend on the lemmy instance the posts are served from:

Without Thumbnails

With Thumbnails

Update: It’s not only YT thumbnails which aren’t shown. This is your post about the free 24 slot bag as shown on lemmy.wtf (without thumbnail), lemmy.world (without thumbnail) and feddit.de (with thumbnail):

  • Necropola❌OPEnglish
    3•1 year ago

    That’s really weird. I already went through the issue tracker on GitHub for both the lemmy backend as well as the frontend, but couldn’t find anything. I also checked the documentation whether there is a configuration option somewhere. Nothing.

    My guess is that the thumbnail is extracted (read from the opengraph tag available via the posted URL) in the frontend (and not the backend). (wrong guess)

    The only thing I could find on the issue tracker which might be related is this:

    https://github.com/LemmyNet/lemmy-ui/issues/709

    • MeldrikMEnglish
      1•1 year ago

      I have no idea why it is happening. The only thing I can think of is Cloudflare tunnel, but why would that keep the thumbnails from loading? I send a message to the admin of Lemmy.world.

      edit: I am also trying to troubleshoot why users from kbin.social can’t subscribe to here and vice versa.

      • Necropola❌OPEnglish
        3•1 year ago

        I was able to subscribe from lemmy.world to kbin.social (yesterday or the day before). I tried it on another account from feddit.de today and it did not work. My guess is a problem at kbin.social.