diff --git a/CMakeLists.txt b/CMakeLists.txt
index 31aac33..1e249ad 100755
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -15,7 +15,7 @@ SET( PROJECT_NAME playuver )
 # Project directories 
 SET( SRC_DIR source )
 SET( INC_DIR source )
-SET( LIB_DIR lib )
+SET( LIB_DIR ${SRC_DIR}/lib )
 SET( RSC_DIR resources )
 SET( UI_DIR  ui )
 SET( EXTERNAL_SRC external_lib )
diff --git a/source/InputStream.cpp b/source/InputStream.cpp
index b41200e..5bf0ff4 100755
--- a/source/InputStream.cpp
+++ b/source/InputStream.cpp
@@ -136,7 +136,7 @@ Void InputStream::init( QString filename, UInt width, UInt height, Int input_for
   m_iPixelFormat = input_format;
 
 #ifdef USE_FFMPEG
-  avStatus = m_cLibAvContext.initAvFormat( filename, m_uiWidth, m_uiHeight, m_iPixelFormat, m_uiFrameRate );
+  avStatus = m_cLibAvContext.initAvFormat( filename.toLocal8Bit().data(), m_uiWidth, m_uiHeight, m_iPixelFormat, m_uiFrameRate );
 #endif
 
   if( m_uiWidth <= 0 || m_uiHeight <= 0 )
diff --git a/source/InputStream.h b/source/InputStream.h
index 44c9abb..228a4df 100755
--- a/source/InputStream.h
+++ b/source/InputStream.h
@@ -36,8 +36,12 @@
 #include <opencv2/opencv.hpp>
 #endif
 
-#include "TypeDef.h"
+#ifdef USE_FFMPEG
 #include "LibAvContextHandle.h"
+#endif
+
+#include "TypeDef.h"
+
 #include "PlaYUVerFrame.h"
 
 namespace plaYUVer
diff --git a/lib/ffmpeg/LibAvContextHandle.cpp b/source/lib/ffmpeg/LibAvContextHandle.cpp
similarity index 91%
rename from lib/ffmpeg/LibAvContextHandle.cpp
rename to source/lib/ffmpeg/LibAvContextHandle.cpp
index 9cd0d1c..11a3af0 100755
--- a/lib/ffmpeg/LibAvContextHandle.cpp
+++ b/source/lib/ffmpeg/LibAvContextHandle.cpp
@@ -23,12 +23,7 @@
 
 #include "LibAvContextHandle.h"
 
-#ifdef USE_FFMPEG
-
 #include <cstdio>
-
-#include <QtDebug>
-
 #include "LibMemAlloc.h"
 #include "PlaYUVerFrame.h"
 
@@ -87,7 +82,7 @@ namespace plaYUVer
     m_bHasStream = false;
   }
 
-  Bool LibAvContextHandle::initAvFormat( QString filename, UInt& width, UInt& height, Int& pixel_format, UInt& frame_rate )
+  Bool LibAvContextHandle::initAvFormat( char* filename, UInt& width, UInt& height, Int& pixel_format, UInt& frame_rate )
   {
     Bool bRet = true;
     int ret = 0;
@@ -103,7 +98,7 @@ namespace plaYUVer
     frame = NULL;
     m_bHasStream = false;
 
-    char *src_filename = filename.toLocal8Bit().data();
+    char *src_filename = filename;
     AVDictionary *format_opts = NULL;
 
     /* register all formats and codecs */
@@ -130,14 +125,14 @@ namespace plaYUVer
     /* open input file, and allocate format context */
     if( avformat_open_input( &fmt_ctx, src_filename, NULL, &format_opts ) < 0 )
     {
-      qDebug( ) << " Could not open source file %s !!!" << filename << endl;
+      //qDebug( ) << " Could not open source file %s !!!" << filename << endl;
       return false;
     }
 
     /* retrieve stream information */
     if( avformat_find_stream_info( fmt_ctx, NULL ) < 0 )
     {
-      qDebug( ) << " Could not find stream information !!!" << endl;
+      //qDebug( ) << " Could not find stream information !!!" << endl;
       return false;
     }
 
@@ -150,7 +145,7 @@ namespace plaYUVer
       ret = av_image_alloc( video_dst_data, video_dst_linesize, video_dec_ctx->width, video_dec_ctx->height, video_dec_ctx->pix_fmt, 1 );
       if( ret < 0 )
       {
-        qDebug( ) << " Could not allocate raw video buffer !!!" << endl;
+        //qDebug( ) << " Could not allocate raw video buffer !!!" << endl;
         closeAvFormat();
         return false;
       }
@@ -187,7 +182,7 @@ namespace plaYUVer
     av_dump_format( fmt_ctx, 0, src_filename, 0 );
     if( !video_stream )
     {
-      qDebug( ) << " Could not find audio or video stream in the input, aborting !!!" << endl;
+      //qDebug( ) << " Could not find audio or video stream in the input, aborting !!!" << endl;
       bRet = false;
       closeAvFormat();
       return false;
@@ -196,7 +191,7 @@ namespace plaYUVer
     frame = avcodec_alloc_frame();
     if( !frame )
     {
-      qDebug( ) << " Could not allocate frame !!!" << endl;
+      //qDebug( ) << " Could not allocate frame !!!" << endl;
       ret = AVERROR( ENOMEM );
       closeAvFormat();
       return false;
@@ -262,5 +257,3 @@ namespace plaYUVer
   }
 
 }  // NAMESPACE
-
-#endif
diff --git a/lib/ffmpeg/LibAvContextHandle.h b/source/lib/ffmpeg/LibAvContextHandle.h
similarity index 90%
rename from lib/ffmpeg/LibAvContextHandle.h
rename to source/lib/ffmpeg/LibAvContextHandle.h
index 2eb9fdc..28f8652 100755
--- a/lib/ffmpeg/LibAvContextHandle.h
+++ b/source/lib/ffmpeg/LibAvContextHandle.h
@@ -24,11 +24,7 @@
 #ifndef __LIBAVCONTEXTHANDLE_H__
 #define __LIBAVCONTEXTHANDLE_H__
 
-#include "config.h"
-
-#ifdef USE_FFMPEG
-
-#include <QtCore>
+//#include "config.h"
 
 extern "C"
 {
@@ -46,7 +42,7 @@ namespace plaYUVer
   class LibAvContextHandle
   {
   public:
-    Bool initAvFormat( QString filename, UInt& width, UInt& height, Int& pixel_format, UInt& frame_rate );
+    Bool initAvFormat( char* filename, UInt& width, UInt& height, Int& pixel_format, UInt& frame_rate );
     Void closeAvFormat();
     Bool decodeAvFormat();
 
@@ -74,6 +70,4 @@ namespace plaYUVer
 
 }  // NAMESPACE
 
-#endif
-
 #endif // __LIBAVCONTEXTHANDLE_H__
diff --git a/source/lib/ffmpeg/Makefile b/source/lib/ffmpeg/Makefile
new file mode 100644
index 0000000..6e73b6c
--- /dev/null
+++ b/source/lib/ffmpeg/Makefile
@@ -0,0 +1,25 @@
+# Makefile template for shared library
+ 
+CC = gcc # C compiler
+CFLAGS = -fPIC -Wall -Wextra -O2 -g -I../.. # C flags
+LDFLAGS = -shared  # linking flags
+RM = rm -f  # rm command
+TARGET_LIB = LibAvContextHandle.so # target lib
+ 
+SRCS = LibAvContextHandle.cpp # source files
+OBJS = $(SRCS:.c=.o)
+ 
+.PHONY: all
+all: ${TARGET_LIB}
+ 
+$(TARGET_LIB): $(OBJS)
+	$(CC) ${LDFLAGS} -o $@ $^
+ 
+$(SRCS:.c=.d):%.d:%.cpp
+	$(CC) $(CFLAGS) -MM $< >$@
+ 
+include $(SRCS:.c=.d)
+ 
+.PHONY: clean
+clean:
+	-${RM} ${TARGET_LIB} ${OBJS} $(SRCS:.c=.d)
\ No newline at end of file