[Bug 727180] New: videoscaling negotiation with videomixer

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=727180
  GStreamer | gst-plugins-good | 1.x

           Summary: videoscaling negotiation with videomixer
    Classification: Platform
           Product: GStreamer
           Version: 1.x
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: gst-plugins-good
        AssignedTo: gstreamer-bugs at lists.freedesktop.org
        ReportedBy: michael.g.wood at linux.intel.com
         QAContact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---


GStreamer 1.2.3 

With gstreamer 1.0  and the videomixer plugin the scaling doesn't seem to be
negotiated correctly.

e.g. Works as expected (no videomixer element):
 gst-launch-1.0 -v ximagesrc ! videoscale ! video/x-raw,width=600,height=300 !
ximagesink 

Add videomixer element now it doesn't scale to the width/height:
 gst-launch-1.0 -v ximagesrc ! videomixer name=mix  !  videoscale !
video/x-raw,width=600,height=300 ! ximagesink 

This works in the expected way if I use gstreamer-0.1 
gst-launch-0.10 -vv ximagesrc  ! videomixer name=mix !  videoscale !
video/x-raw-rgb,width=600,height=300 ! ximagesink

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