[ffmpegthumbs] [Bug 509991] Dolphin does not load thumbnails in webp format embedded in mkv file

Nicolas Fella bugzilla_noreply at kde.org
Sat Sep 27 20:14:57 BST 2025


https://bugs.kde.org/show_bug.cgi?id=509991

Nicolas Fella <nicolas.fella at gmx.de> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|general                     |general
            Product|dolphin                     |ffmpegthumbs
           Assignee|dolphin-bugs-null at kde.org   |unassigned-bugs at kde.org

--- Comment #3 from Nicolas Fella <nicolas.fella at gmx.de> ---
Thanks. How did you create the file?

as far as I can tell there is a stream with a webp image inside, but it doesn't
have the correct content disposition (AV_DISPOSITION_ATTACHED_PIC) so the
thumbnailer code doesn't use it.

See
https://invent.kde.org/multimedia/ffmpegthumbs/-/blob/master/ffmpegthumbnailer.cpp?ref_type=heads#L110

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