Hi, 2 solutions. ****The first one (user) is to click on volume icone from task bar then Options->properties then select "Enregistrement" ("Recording") then select microphone then OK then unmute microphone. ****The second solution (using code), is to recompile dshowaudiosrc using this patch: <a href="http://bugzilla.gnome.org/show_bug.cgi?id=517203">http://bugzilla.gnome.org/show_bug.cgi?id=517203</a> (just see the last post) Then the following code could be used to list, select and configure the input channel of your choise (S/PDIF, lineIn, Mic etc..) ----------------------------- list audio input ------------------------ vector<string> listAudioInputs(const string audioDeviceName) GstElement* audiodevicesrc = create_element("dshowaudiosrc", "audiodevicesrc"); g_object_set(G_OBJECT(audiodevicesrc), "device-name", audioDeviceName.c_str(), NULL); GstPad* pad = gst_element_get_static_pad (audiodevicesrc, "src"); gst_pad_get_caps (pad); if (pad) gst_object_unref(pad); vector<string> l_inputs; GstMixer *mixer = GST_MIXER (audiodevicesrc); const GList* list = gst_mixer_list_tracks (mixer); for (const GList* item = list; item != NULL; item = item->next) { GstMixerTrack *track = (GstMixerTrack*)item->data; l_inputs.push_back(string(track->label)); } if (audiodevicesrc) { gst_element_set_state (audiodevicesrc, GST_STATE_NULL); gst_object_unref(GST_OBJECT (audiodevicesrc)); } return l_inputs; } ------------------------------------------------------------------------------------------------------ ---------------------------- select record input and set volume ------------------------------------- void setAudioInput(const string audioInput, int volumePercentOfMax) { GstMixer *mixer = GST_MIXER (audiodevicesrc); GstMixerTrack *track = NULL; const GList* list = gst_mixer_list_tracks (mixer); for (const GList* item = list; item != NULL; item = item->next) { GstMixerTrack *track_next = (GstMixerTrack*)item->data; if (audioInput == std::string(track_next->label)) track = track_next; else //mute other audio inputs gst_mixer_set_mute(mixer, track_next, TRUE); } if (track) { vector<gint> volumes(m_audioNbChannels, (gint)(volumePercentOfMax * track->max_volume / 100.0)); gst_mixer_set_record (mixer, track, TRUE); gst_mixer_set_volume (mixer, track, &volumes[0]); } } ------------------------------------------------------------------------------------------------------ They are some bad things in this code but the idea is there. You can also use property probe on dshowaudiosrc to list all the audio device names installed on your system. J. <div class="gmail_quote">2009/3/18 <<a href="mailto:cammille@polytech.unice.fr">cammille@polytech.unice.fr</a>> <blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">Hello, I'm trying to use dshowaudiosrc on Windows but I have some problems. For example, I try : gst-launch-0.10.exe dshowaudiosrc ! audioconvert ! vorbisenc ! oggmux ! filesink location=foo.ogg And hen I talk in my micro the file foo.ogg is empty. I already verified if my micro functions correctly. It does. If I try : gst-launch-0.10.exe audiotestsrc ! audioconvert ! vorbisenc ! oggmux ! filesink location=foo.ogg it works ! Where is the problem ? ------------------------------------------------------------------------------ Apps built with the Adobe(R) Flex(R) framework and Flex Builder(TM) are powering Web 2.0 with engaging, cross-platform capabilities. Quickly and easily build your RIAs with Flex Builder, the Eclipse(TM)based development software that enables intelligent coding and step-through debugging. Download the free 60 day trial. <a href="http://p.sf.net/sfu/www-adobe-com" target="_blank">http://p.sf.net/sfu/www-adobe-com</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> </blockquote></div>