[Bug 741878] New: Core elements not installed in GST1.0

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=741878
  GStreamer | gstreamer (core) | 1.0.0

           Summary: Core elements not installed in GST1.0
    Classification: Platform
           Product: GStreamer
           Version: 1.0.0
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: gstreamer (core)
        AssignedTo: gstreamer-bugs at lists.freedesktop.org
        ReportedBy: hadwarez at gmail.com
         QAContact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---


I was trying to test a simple pipeline on Ubuntu 14.04: 

    gst-launch-1.0 filesrc location=mysound.mp3  ! decodebin ! audioconvert !
alsasink

When I got this error: "ERROR: pipeline could not be constructed: no element
"filesrc"."

I thus looked into the gstreamer-inspect1.0 command to figure this out, and it
actually appeared that **none of the coreelement "plugins" were found by
gstreamer**.

What could be the cause of this? Which package includes these? (I thought it'd
be the base package!)

PS: gstreamer0.10 works fine, and has all the necessary plugins.

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