And then, you can see elements and caps graph in a pipeline.
+
+### gst-debugger
+gst-debugger (a.k.a Gstreamer Debugger) toolset allows to introspect gst-pipeline remotely. It provides graphical client, and GStreamer's plugin.
+This guide is written on Ubuntu 16.04 X86_64 distribution.
+
+#### Build the source code
+```bash
+$ git clone https://github.com/GNOME/gst-debugger.git
+$ cd gst-debugger
+$ git checkout 0.90.0
+$ ./autogen.sh
+$ vi ./src/gst-debugger/controller/controller.cpp
+---------------- patch: start --------------------
+@@ -16,6 +16,7 @@
+ #include "common/common.h"
+
+ #include <gtkmm.h>
++#include <iostream>
+
+ Controller::Controller(IMainView *view)
+ : view(view)
+---------------- patch: end ----------------------
+$ make -j`nproc`
+$ sudo make install
+$ ls -al /usr/local/lib/libgst-debugger-common*.so.*
+lrwxrwxrwx 1 root root 37 Nov 19 14:59 /usr/local/lib/libgst-debugger-common-c-0.1.so.0 -> libgst-debugger-common-c-0.1.so.0.0.0
+-rwxr-xr-x 1 root root 250808 Nov 19 14:59 /usr/local/lib/libgst-debugger-common-c-0.1.so.0.0.0
+lrwxrwxrwx 1 root root 39 Nov 19 14:59 /usr/local/lib/libgst-debugger-common-cpp-0.1.so.0 -> libgst-debugger-common-cpp-0.1.so.0.0.0
+-rwxr-xr-x 1 root root 1848904 Nov 19 14:59 /usr/local/lib/libgst-debugger-common-cpp-0.1.so.0.0.0
+
+```
+
+#### Run gst-debugger
+The toolset consists of the rich client, and debugserver (Default port: 8080). debugserver is implemented as a tracer plugin, and has to be loaded with your pipeline as following:
+```bash
+Case1: Run videotestsrc plugin with gst-launch command.
+$ GST_TRACERS="debugserver(port=8080)" gst-launch-1.0 videotestsrc ! autovideosink
+
+Case2: Run a Totem movie player that is developed by GStreamer.
+$ wget http://www.html5videoplayer.net/videos/toystory.mp4
+$ GST_TRACERS="debugserver(port=8080)" totem ./toystory.mp4
+```
+
+Now you can use a debugging client to connect to the debugger and inspect your pipeline as following:
+```bash
+$ export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/local/lib/
+$ gst-debugger-1.0
+```
+Starting from now, enjoy a debugging with gst-debugger.
+<img src=gstreamer-debugger-screen.png border=0></img>