[kio-extras] [Bug 430266] No thumbnails for video files since 20.12.0

[Weng Xuetian]

https://bugs.kde.org/show_bug.cgi?id=430266

--- Comment #23 from Weng Xuetian <wengxt at gmail.com> ---
Since can be made to work on some system with given version, it is less likely
to be a bug in the package but more likely to be either your system has some
misconfiguration or packaging issue. 

Here's the things I suggest to be checked :
1. Check if dolphin has the video thumbnailer enabled
2. I'm not sure what's your repo setup, leap 15.2 doesn't have 20.12 so are you
using mixed packages or additional 3rd party repo?
you may want to check carefully if everything matches expectation, and also
list all the relevant packages version installed on your system, including
libx264, all relevant libav* packages and ffmpegthumbs.

3. While I think it's unlikely to get broken linkage on rpm based system, what
is your output of
ldd /usr/lib64/qt5/plugins/ffmpegthumbs.so 
does it show anything "not found"?

When you run dolphin from the command line, does it give any error that seems
related to "video" or "stream"?

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