HI seb, <div style="margin-left: 40px;">Thank for your help. I know how to use the gst-inspet-0.10.exe and gst-launch-0.10.exe on windows. After i place the gstreamer-0.10.11.win32 to the ../common file/gstreamer xx/bin and lib. I can use the launch and inspet on windows to play ogg and mp3 file now. But when i test my application, i can't run it that will occur error on command line: ** (testing.exe:3516): CRITICAL **: file E:\devel-release\src_releases\gstreamer \gst\gstinfo.c: line 413: assertion `category != NULL' failed OIL: ERROR liboilcpu.c 282: oil_cpu_i386_kernel_restrict_flags(): Operating syst em is not known to support SSE.  Assuming it does, which might cause problems This program is linked against GStreamer 0.10.5 (CVS) i just using sample testing program. There is my application: #include <gst/gst.h> int main (int   argc,       char *argv[]) {   const gchar *nano_str;   guint major, minor, micro, nano;   gst_init (&argc, &argv);   gst_version (&major, &minor, &micro, &nano);   if (nano == 1)     nano_str = "(CVS)";   else if (nano == 2)     nano_str = "(Prerelease)";   else     nano_str = "";   printf ("This program is linked against GStreamer %d.%d.%d %s\n",           major, minor, micro, nano_str);   return 0; } what can i do? Thank again for your help </div> <div>On 1/17/07, Kevin Wong <<a href="mailto:simon.simonwong@gmail.com">simon.simonwong@gmail.com</a>> wrote:<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"> <div> <div>On 1/16/07, Kevin Wong <<a href="mailto:simon.simonwong@gmail.com" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)"> simon.simonwong@gmail.com</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 seb, <div style="margin-left: 40px;">I hv't move the file. After execute gst-inspect-0.10, it only hv 1 plugin and 2 features. ...\gstreamer-0.10.11.win32\bin>gst-inspet-0.10.exe staticelements:  bin: Generic bin staticelements:  pipeline: Pipeline object Total count: 1 plugin, 2 features </div><div> <div>On 1/16/07, Sébastien Moutte <<a href="mailto:sebastien@moutte.net" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)"> sebastien@moutte.net</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 Kevin, You don't need to setup the GST_PLUGIN_PATH as the setups already do it for you. The setup are installing gstreamer to $COMMONFILES/Gstreamer/0.10/. Have you moved the files to another folder ? If yes, you should try gst-inspect-0.10 in your working folder to see if all the plugins are well found. Sebastien Kevin Wong a écrit : > HI ALL, > I hv installed the "gstreamer setup ","gst-plugins-base" setup and > "gst-plugins-bad-cvs-29122006.setup.zip" but i still can't play any > file on windows. > when i play .ogg file that shown that on command line: > > D:\...debug>set GST_PLUGIN_PATH=...\debug\plugins > > D:\..\debug>gst-launch-0.10.exe playbin uri= <a>file://d:/video.ogg</a> > Setting pipeline to PAUSED ... > Pipeline is PREROLLING ... > > ** (gst-launch-0.10.exe:1016): WARNING **: could not create autoaudiosink > element > > (gst-launch-0.10.exe:1016): GStreamer-CRITICAL **: gst_object_ref: > assertion > `GST_IS_OBJECT (object)' failed > > (gst-launch-0.10.exe:1016): GStreamer-CRITICAL **: gst_object_ref: > assertion > `GST_IS_OBJECT (object)' failed > > (gst-launch-0.10.exe:1016): GStreamer-CRITICAL **: gst_bin_add: assertion > `GST_IS_ELEMENT (element)' failed > > (gst-launch-0.10.exe :1016): GStreamer-CRITICAL **: gst_element_link_pads: > assertion `GST_IS_ELEMENT (dest)' failed > Pipeline is PREROLLED ... > Setting pipeline to PLAYING ... > New clock: GstSystemClock > > Thanks for your help > ------------------------------------------------------------------------ > > ------------------------------------------------------------------------- > Take Surveys. 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