<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <meta http-equiv="content-type" content="text/html; charset=ISO-8859-1"> </head> <body text="#000000" bgcolor="#ffffff"> Hello, I am writing a small sound-recording application/applet in C. It will do approx. the same task as this command line. $ gst-launch-0.10 pulsesrc device="xxxx" ! queue ! audioconvert ! vorbisenc ! oggmux ! filesink location=test.oga My platform is GNOME on Ubuntu-Linux 10.04. In my GTK app, I would like to fill a listbox with names and description of the "Source" devices; such as "Audio card X" "Micro phone 1" so the user can select the source of the recording. See the devive= parameter in the above command line. How can I find the device names + description using c and GStreamer libraries? I have poked the "gstreamer-properties" application and it finds the device names like PulseAudio Audio Source (pulsesrc): Device name: alsa_output.pci-0000_04_02.0.analog-stereo.monitor  Description: Unknown PulseAudio Audio Source (pulsesrc): Device name: device alsa_input.usb-046d_089d-01-U0x46d0x89d.analog-mono Description: Unknown The device name is ok, but the human readable description is empty/"Unknown". See this picture: <meta http-equiv="content-type" content="text/html; charset=ISO-8859-1"> <a href="http://www.futuredesktop.com/tmp/audio-recorder/picture1.png">http://www.futuredesktop.com/tmp/audio-recorder/picture1.png</a> The device description for Source #0 and #1 are set to "Unknown". However the "pactl list" command shows the description right. <meta http-equiv="content-type" content="text/html; charset=ISO-8859-1"> <a href="http://www.futuredesktop.com/tmp/audio-recorder/picture2.png">http://www.futuredesktop.com/tmp/audio-recorder/picture2.png</a> Source #0  State: RUNNING  Name: alsa_output.pci-0000_04_02.0.analog-stereo.monitor  <-- I WANT THIS  Description: Monitor of SB0400 Audigy2 Value Analog Stereo <--- AND THIS Source #1  State: SUSPENDED  Name: alsa_input.usb-046d_089d-01-U0x46d0x89d.analog-mono <- I WANT THIS  Description: QuickCam E2500 series Analog Mono <--- AND THIS Test code: <a class="moz-txt-link-freetext" href="http://www.futuredesktop.com/tmp/audio-recorder/t1.c">http://www.futuredesktop.com/tmp/audio-recorder/t1.c</a> <meta http-equiv="content-type" content="text/html; charset=ISO-8859-1"> <a href="http://www.futuredesktop.com/tmp/audio-recorder/"></a> Kindly   Gstreamer newbie.   Moma Antero M (osmo)   <a class="moz-txt-link-abbreviated" href="http://www.futuredesktop.org">www.futuredesktop.org</a> (com) </body> </html>