Getting unresolved external symbol error though I placed dll

[kokila]

I am using QT 5.3 version. My compiler is msvc2013opengl. Downloaded VLC 2.1

I have used the following url to create a player using VLC.
https://wiki.videolan.org/LibVLC_Tutorial_086c/


I get the following errors.
main.obj error: LNK2019: unresolved external symbol _libvlc_new referenced in function _main
main.obj error: LNK2019: unresolved external symbol _libvlc_release referenced in function _main
main.obj error: LNK2019: unresolved external symbol _libvlc_media_new_path referenced in function _main
main.obj error: LNK2019: unresolved external symbol _libvlc_media_player_new_from_media referenced in function _main
main.obj error: LNK2019: unresolved external symbol _libvlc_media_player_release referenced in function _main
main.obj error: LNK2019: unresolved external symbol _libvlc_media_player_play referenced in function _main
main.obj error: LNK2019: unresolved external symbol _libvlc_media_player_stop referenced in function _main
debug\TestVLC.exe error: LNK1120: 7 unresolved externals

My main.cpp

#include "vplayer.h"
#include <QtCore/QCoreApplication>
#include <QtCore/QTextCodec>
#include <QApplication>
int main(int argc, char *argv[])
{
QCoreApplication::setApplicationName("test");
QTextCodec::setCodecForLocale(QTextCodec::codecForName("UTF-8"));
QApplication a(argc, argv);
vPlayer w;
w.show();

return a.exec();
}

My .pro file
QT += core gui
greaterThan(QT_MAJOR_VERSION, 4): QT += widgets

TARGET = TestVLC
TEMPLATE = app
SOURCES += main.cpp\
vlc_on_qt.cpp
HEADERS += vlc_on_qt.h
FORMS += vlc_on_qt.ui
LIBS += -LC:/Qt/libvlc-qt/lib -llibvlc
LIBS += -LC:/Qt/libvlc-qt/lib -llibvlccore
LIBS += -LC:/Qt/libvlc-qt/lib -lvlc-qt
LIBS += -LC:/Qt/libvlc-qt/lib -lvlc-qt-widgets
INCLUDEPATH += C:/Qt/libvlc-qt/include

I have copied .h files from VLC folder to C:\Qt\libvlc-qt\include
I have copied .dll,.lib,plugins from VLC source code to my application's build folder under debug which is
C:\Qt\Qt5.3.1\Tools\QtCreator\bin\build-TestVLC-Desktop_Qt_5_3_MSVC2013_OpenGL_32bit-Debug\debug

pkgconfig (contains libvlc.pc,vlc-plugin.pc)
plugins (copied from vlc folder)
axvlc.dll
libvlc.dll
libvlc.dll.a
libvlc.a
libvlc.lib
libvlccore.dll
libvlccore.dll.a
libvlccore.la
libvlccore.lib
npvlc.dll
vlc-qt.dll
vlc-qt.lib
vlc-qt-widgets.dll
vlc-qt=widgets.lib

I have added path variables under controlpanel->systemsecurity->advanced system settings->environment variables
C:\Qt\Qt5.3.1\5.3\msvc2013_opengl\bin ( I am not sure whether it is correct)

My projects resides under C:\Qt\Qt5.3.1\Tools\QtCreator\bin. Though I changed the path, the result is the same.

Please help me. What else I have to do