--gst-debug-level=5 should be changed to --gst-debug-level=*:2,typefind:1,filesrc:4 You can string these together as you need to. <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/manual/html/section-checklist-debug.html">http://gstreamer.freedesktop.org/data/doc/gstreamer/head/manual/html/section-checklist-debug.html</a> <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/gstreamer-GstInfo.html">http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/gstreamer-GstInfo.html</a> <div class="gmail_quote"> On Fri, Aug 3, 2012 at 4:40 AM, Soho Soho123 <<a href="mailto:soho123.2012@gmail.com" target="_blank">soho123.2012@gmail.com</a>> wrote: <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"> Hi all, I try to debug the issue : gst-launch-0.10 --gst-debug-no-color --gst-debug-level=5 filesrc location=/var/tmp/usb/sda1/audio_src/1503-9_48K.wav ! wavparse ! audioconvert ! audio/x-raw-int, rate=48000,channels=2,width=16,endianness=1234 ! alsasink device="hw:0,0" I set debug level=5, but there is a lot of log about typefind, for example below: gsttypefindhelper.c:437:buf_helper_find_peek:<wavparse0> 'video/mpeg-elementary' called peek (7676, 4096) how to remove typefind log? And how to remove the prefix data like"0:28:13.490000000 1045 0x423520"? 0:28:13.490000000 1045 0x423520 LOG default gsttypefindhelper.c:437:buf_helper_find_pe ek:<wavparse0> 'video/mpeg-elementary' called peek (7676, 4096) _______________________________________________ gstreamer-devel mailing list <a href="mailto:gstreamer-devel@lists.freedesktop.org">gstreamer-devel@lists.freedesktop.org</a> <a href="http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel" target="_blank">http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel</a> </blockquote></div>