[Bug 696651] New: v4l2loopback:gst_buffer_get_meta: assertion `buffer != NULL' failed."

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=696651
  GStreamer | gst-plugins-good | 1.0.0

           Summary: v4l2loopback:gst_buffer_get_meta: assertion `buffer !=
                    NULL' failed."
    Classification: Platform
           Product: GStreamer
           Version: 1.0.0
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: major
          Priority: Normal
         Component: gst-plugins-good
        AssignedTo: gstreamer-bugs at lists.freedesktop.org
        ReportedBy: vvinoth at watchy.in
         QAContact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---


When i execute a gstreamer-1.0 pipeline 

"gst-launch-1.0 -evm videotestsrc ! v4l2sink device=/dev/video1" 

for video loop back using v4l2loopback version 0.6.3 it thows the following
error 

"(gst-launch-1.0:17157): GStreamer-CRITICAL **: gst_buffer_get_meta: assertion
`buffer != NULL' failed." 

The behaviour is inconsistent, in 5 attempts atleast thrice this error comes. 

System Environment, Ubuntu 12.10, 32bit, 3.5.0-26-generic kernel. 

It looks like some problem with the v4l2loopback element, because when I
replace the v4l2lopback with fakesink , it didnt throw any error.

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