Probem with output-selector

[rasnaut]

Hi to All!
I try to run example with output-selector (I copied code with
gst-plugins-base-0.11.92/tests/icles/output-selector.c in QT). GStreamer get
next Errors:

Got error message
Error: not negotiated
GLib-GObject-WARNING **: invalid uninstantiatable type `(null)' in cast to
`GstElement'
GLib-GObject-WARNING **: invalid uninstantiatable type `(null)' in cast to
`GObject'
GLib-GObject-CRITICAL **: g_object_get: assertion `G_IS_OBJECT (object)'
failed
GLib-GObject-WARNING **: invalid uninstantiatable type `(null)' in cast to
`GObject'
GLib-GObject-CRITICAL **: g_object_set: assertion `G_IS_OBJECT (object)'
failed

I tried delete some code part, change plugins an etc. But nothing to
changed. So anybody know what do with this?

And one more question: I wrote early about problem with xvimagesink plugin
(that number of xvimagesink depends on the video card ports). So I want
create one xvimagesink and switch it between my src streams. For implement
this I want use output-selector. How I see this:
v4l2src device=/dev/video0 ! videorate ! identity ! output-selector ! | ! 
fakesink
                                                                                                
|_ _ _ _ _ _ _ _ _ _ _ _ _
                                                                                                                                     
| 
v4l2src device=/dev/video2 ! videorate ! identity ! output-selector ! | ! 
fakesink                    |
                                                                                                
|_ _ _ _ _ _ _ _ _ _          |
                                                                                                                           
|          | 
v4l2src device=/dev/video3 ! videorate ! identity ! output-selector ! | ! 
fakesink          ! xvimagesink
.                                                                                               
|_ _ _ _ _ _ _ _ _ _|         |
.                                                                                                                                     
|
.                                                                                                                                     
|
v4l2src device=/dev/videoN ! videorate ! identity ! output-selector ! | ! 
fakesink                    |
                                                                                                
|_ _ _ _ _ _ _ _ _ _ _ _ _ _|
                                                                                                                                       
So, what do you think, It possible with output-selector? Or maybe I must use
another gstreamer plugin?



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