Case 1: The below pipeline should play any mp3 file. gst-launch -v filesrc location=song.mp3 ! mad ! audioconvert ! audioresample ! autoaudiosink Case 2: And optionally if the file has id3 tags then use gst-launch -v filesrc location=song.mp3 ! id3demux ! mad ! audioconvert ! audioresample ! autoaudiosink You need to additional install mad(mp3 decoder). Only in case 2 you need to have the callback for "pad-added" signal. Check out the helloworld example and similar from manual. <div class="gmail_quote">On Thu, Nov 19, 2009 at 4:14 PM, Lukas Ruetz <<a href="mailto:lukas.ruetz@gmx.at">lukas.ruetz@gmx.at</a>> wrote: <blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"> Hi, Am Donnerstag, den 19.11.2009, 07:41 -0200 schrieb Tiago Katcipis: <div><div></div><div class="h5">> It would be easier if you show your on_pad_added function, and if you > tell exactly what error messages do you get when you run your > application. > > To investigate the capabilities of a element you can use gst-inspect. > > On a terminal you can type for example: > gst-inspect flump3dec > > it will give an complete specification of the flump3dec element. > > best regards, > Katcipis > > On Thu, Nov 19, 2009 at 6:40 AM, basavaraj P <<a href="mailto:basavarajp82@gmail.com">basavarajp82@gmail.com</a>> > wrote: > Hello, > > Following is code which plays mp3 using playbin > > /* set up */ > play = gst_element_factory_make ("playbin2", "play"); > g_object_set (G_OBJECT (play), "uri", > "file:///home/basavaraj/Music/JabSeTereNaina.mp3", NULL); > > bus = gst_pipeline_get_bus (GST_PIPELINE (play)); > // gst_bus_add_watch (bus, my_bus_callback, loop); > gst_object_unref (bus); > > gst_element_set_state (play, GST_STATE_PLAYING); > > > Following is code which does not play mp3. Please help me what > all plugins we need to connect and > how to find their capabilities > > /* Create gstreamer elements */ > GstElement* pipeline = gst_pipeline_new ("audio-player"); > GstElement* source = gst_element_factory_make ("filesrc", > "file-source"); > GstElement* demuxer = gst_element_factory_make > ("mpegdemux2", "mpeg-demuxer"); > GstElement* decoder = gst_element_factory_make > ("flump3dec", "fluendo-decoder"); > // GstElement* decoder = > gst_element_factory_make("decodebin", "decoderbin"); > GstElement* conv = gst_element_factory_make > ("audioconvert", "converter"); > GstElement* sink = gst_element_factory_make > ("autoaudiosink", "audio-output"); > > if (!pipeline || !source || !demuxer || !decoder || !conv > || !sink) { > g_printerr ("One element could not be created. > Exiting.\n"); > return -1; > } > > /* Set up the pipeline */ > > /* we set the input filename to the source element */ > // g_object_set (G_OBJECT (source), "uri", > "file:///home/basavaraj/Music/Jab.mp3", NULL); > g_object_set (G_OBJECT (source), "location", > "/home/basavaraj/Music/Jab.mp3", NULL); > > /* we add a message handler */ > GstBus *bus = gst_pipeline_get_bus (GST_PIPELINE > (pipeline)); > gst_bus_add_watch (bus, bus_call, loop); > gst_object_unref (bus); > > /* we add all elements into the pipeline */ > /* file-source | mp3-demuxer | mp3-decoder | converter | > alsa-output */ > gst_bin_add_many (GST_BIN (pipeline), > source, demuxer, decoder, conv, sink, > NULL); > > /* we link the elements together */ > /* file-source -> mp3-demuxer ~> mp3-decoder -> converter -> > alsa-output */ > gst_element_link (source, demuxer); > g_signal_connect (demuxer, "pad-added", G_CALLBACK > (on_pad_added), decoder); > > /* Set the pipeline to "playing" state*/ > g_print ("Now playing: %s\n", argv[1]); > gst_element_set_state (pipeline, GST_STATE_PLAYING); > > > Thanks in advance, > Basavaraj </div></div>Try this pipeline to play mp3s. Because it's audio-only (beside mp3-tags) you don't need a demuxer. gst-launch-0.10 -v filesrc location=song.mp3 ! mp3parse ! flump3dec ! audioconvert ! audioresample ! autoaudiosink hth, lukas <div><div></div><div class="h5"> ------------------------------------------------------------------------------ Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. <a href="http://p.sf.net/sfu/bobj-july" target="_blank">http://p.sf.net/sfu/bobj-july</a> _______________________________________________ gstreamer-devel mailing list <a href="mailto:gstreamer-devel@lists.sourceforge.net">gstreamer-devel@lists.sourceforge.net</a> <a href="https://lists.sourceforge.net/lists/listinfo/gstreamer-devel" target="_blank">https://lists.sourceforge.net/lists/listinfo/gstreamer-devel</a> </div></div></blockquote></div>