I've installed GStreamer plugins for Fedora 14 using yum. However, when running a qt-phonon application with the GStreamer backend, I get the error

Warning: You do not seem to have the base GStreamer plugins installed. All audio and video support has been disabled

Is there a good baseline test to determine if this is a Phonon problem? Does anybody know where yum installs the GStreamer plugins and how GStreamer resolves plugins?

  • 1
    gst-inspect maybe? Should let you know which plugins are installs.
    – derobert
    Oct 1, 2012 at 21:42
  • Hmm gst-inspect is showing I have valid plugins. I guess the better question is why am I getting that warning?
    – IslandCow
    Oct 1, 2012 at 21:49
  • @derobert thanks for that. grepping for gst-plugins-base only yields uridecodebin and decodebin2. I know that's not right ... It also throws GStreamer-Critical GST_IS_ELEMENT failed :(
    – IslandCow
    Oct 1, 2012 at 22:06

1 Answer 1


Install RPM Fusion repos

Then install phonon's vlc backend:

su -c 'yum install phonon-backend-vlc'

Remove the gstreamer backend:

su -c 'yum erase phonon-backend-gstreamer'
  • 1
    I have the Xine backend working but I want to use the gstreamer backend. I'm testing an application that runs on an embedded product that doesn't have vlc.
    – IslandCow
    Oct 1, 2012 at 20:27

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