Hi, I'm developing an application, it's called Gloobus and it wants to be a very fast previewer for any kind of file, you can see some screenhots and download it from here: <a href="http://gloobus.launchpad.net">http://gloobus.launchpad.net</a> Now, I can reproduce audio files with gstreamer without any problem, but when I try to do it for movies, they play in his own window. I've been trying a lot of thing with the xoverlay function that its supposed to be the one to make the video play in a gtk widget but I get an error If I add the gtk_drawing_area into the GTK_FIXED before I call the xoverlay function, I get a BAD WINDOW error and the application stops. If I add the gtk_drawing_area into the GTK_FIXED after I call the xoverlay function, I get that the gtk drawin has no window or pixmap and it plays in its own window. Here you have the code, I hope you can see what fails here: container is a gtk_fixed added into the main window! void iMovie::play(GtkWidget * container) { m_drawable = gtk_drawing_area_new(); gtk_widget_set_size_request (m_drawable, 600, 500); gtk_fixed_put(GTK_FIXED(container),m_drawable,SHADOW_WIDTH,SHADOW_WIDTH+HEADER_HEIGHT); g_print("Start Playing (%s)...\n",g_file_get_uri ( m_gfile)); gst_init (NULL, NULL); m_pipeline = gst_pipeline_new ("gst-player"); m_bin = gst_element_factory_make ("playbin", "m_bin"); m_sink = gst_element_factory_make ("xvimagesink", "m_sink"); g_object_set ( G_OBJECT (m_bin), "video-sink", m_sink, NULL ); gst_bin_add ( GST_BIN (m_pipeline), m_bin ); { GstBus *bus; bus = gst_pipeline_get_bus (GST_PIPELINE (m_pipeline)); gst_object_unref (bus); } g_object_set (G_OBJECT (m_bin), "uri", g_file_get_uri( m_gfile), NULL ); g_object_set (G_OBJECT (m_sink), "force-aspect-ratio", TRUE, NULL ); if (GST_IS_X_OVERLAY (m_sink)) { printf("Is Overlay (Win ID: %i)!!\n",GPOINTER_TO_INT(GDK_WINDOW_XWINDOW(m_drawable->window))); gst_x_overlay_set_xwindow_id (GST_X_OVERLAY (m_sink), GPOINTER_TO_INT(GDK_WINDOW_XWINDOW(m_drawable->window))); gst_x_overlay_handle_events (GST_X_OVERLAY (m_sink), FALSE); } gst_element_set_state (m_pipeline, GST_STATE_PLAYING); gtk_widget_show_all(container); } -- Jordi Hernández Puigdellívol