Hi All, I am trying to play a mp4 file. When I play from command line using the pipe: "gst-launch filesrc location=/home/ashwini/streams/output.ts ! mpegtsparse ! mpegtsdemux ! decodebin ! ffmpegcolorspace ! ximagesink" The video is displayed well. But when i try to achieve the same pipe thru the application, It fails. The code snippet of pipelie creation is as follows: pipeline = gst_pipeline_new ("gst-player"); //gst_debug_set_default_threshold(GST_LEVEL_DEBUG); gst_debug_set_threshold_for_name("mpegtsparse",GST_LEVEL_DEBUG); src = gst_element_factory_make ("filesrc", NULL); g_assert (src); g_print("URI = %s\n",uri); g_object_set (G_OBJECT (src), "location", uri, NULL); parse = gst_element_factory_make ("mpegtsparse", NULL); g_assert (parse); demux = gst_element_factory_make ("mpegtsdemux", NULL); g_assert (demux); dec = gst_element_factory_make ("decodebin", NULL); g_assert (dec); csp = gst_element_factory_make ("ffmpegcolorspace", NULL); g_assert (csp); videosink = gst_element_factory_make ("ximagesink", NULL); g_assert (videosink); /* Adding elements to the pipeline */ gst_bin_add_many (GST_BIN (pipeline), src, parse, demux, dec, csp, videosink, NULL); // gst_bin_add_many (GST_BIN (pipeline), src, videosink, NULL); // g_assert (gst_element_link_many (src, parse, demux, dec, csp, videosink, NULL)); g_assert (gst_element_link (src, parse)); g_assert (gst_element_link (parse, demux)); gst_element_link (demux, dec); (gst_element_link (dec, csp)); (gst_element_link (csp, videosink)); if (GST_IS_X_OVERLAY (videosink)) { gst_x_overlay_set_xwindow_id (GST_X_OVERLAY (videosink), GPOINTER_TO_INT (window)); } gst_element_set_state (pipeline, GST_STATE_PLAYING); What could be causing it to fail. (In the above snippet described, I have used the gst-player code and modified the pipe to current state) Any help is appreciated. -Ashwini