** Message: video-playback.cc:202: Video pad (src0)

(beep-media-player-2-bin:5171): GLib-GObject-WARNING **: invalid unclassed pointer in cast to `GstBuffer'

(beep-media-player-2-bin:5171): GStreamer-CRITICAL **: gst_mini_object_ref: assertion `GST_IS_MINI_OBJECT (mini_object)' failed
The program 'beep-media-player-2-bin' received an X Window System error.
This probably reflects a bug in the program.
The error was 'BadShmSeg (invalid shared segment parameter)'.
  (Details: serial 76 error_code 179 request_code 145 minor_code 19)
  (Note to programmers: normally, X errors are reported asynchronously;
   that is, you will receive the error a while after causing it.
   To debug your program, run it with the --sync command line
   option to change this behavior. You can then get a meaningful
   backtrace from your debugger if you break on the gdk_x_error() function.)