[gst-devel] using xoverlay

Vinod Nanjaiah Vinod_Nanjaiah at mindtree.com
Sat Dec 15 15:25:45 CET 2007

Has anyone successfully used Xoverlay ;-)

I just can't seem to get the bus message "GST_MESSAGE_ELEMENT" so that I can
proceed and call gst_x_overlay_set_xwindow_id ().

If however, I don't check for the message and directly call
gst_x_overlay_set_xwindow_id (), my app just seg faults with the following

GLIB WARNING ** GLib-GObject - invalid cast from `GstDSPMPEG4Sink' to
GLIB CRITICAL ** GStreamer - gst_implements_interface_cast: assertion
`gst_element_implements_interface (GST_ELEMENT (from), iface_type)' failed

Can someone please, please enlighten me on this.


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