diff --git a/app/VideoSubWindow.cpp b/app/VideoSubWindow.cpp
index bab4daa..e3daeea 100644
--- a/app/VideoSubWindow.cpp
+++ b/app/VideoSubWindow.cpp
@@ -130,18 +130,14 @@ Void VideoSubWindow::refreshSubWindow()
 {
   if( getCategory() & SubWindowAbstract::VIDEO_STREAM_SUBWINDOW )
   {
-    Int currFrameNum = m_pCurrStream->getCurrFrameNum();
-    if( !loadFile( m_cFilename, false ) )
+    if( !m_pCurrStream->reload() )
     {
       close();
       return;
     }
-    seekAbsoluteEvent( currFrameNum );
-  }
-  else
-  {
-    refreshFrame();
+    //seekAbsoluteEvent( currFrameNum );
   }
+  refreshFrame();
 }
 
 Bool VideoSubWindow::loadFile( QString cFilename, Bool bForceDialog )
diff --git a/lib/PlaYUVerFrameStats.cpp b/lib/PlaYUVerFrameStats.cpp
index 76b641a..77e8941 100644
--- a/lib/PlaYUVerFrameStats.cpp
+++ b/lib/PlaYUVerFrameStats.cpp
@@ -44,8 +44,12 @@ PlaYUVerFrameStats::PlaYUVerFrameStats() :
 PlaYUVerFrameStats::~PlaYUVerFrameStats()
 {
   if( m_puiHistogram )
-    freeMem1D( m_puiHistogram );
+  {
+    delete [] m_puiHistogram;
+    //freeMem1D( m_puiHistogram );
+  }
   m_puiHistogram = NULL;
+  m_bHasHistogram = false;
 }
 
 // statistics
@@ -73,20 +77,20 @@ Void PlaYUVerFrameStats::xSetupStatistics( const PlaYUVerFrame *pcFrame, UInt op
 
 Void PlaYUVerFrameStats::calcHistogram()
 {
-  m_bRunningFlag = true;
-  //m_bHasHistogram = false;
   if( m_bHasHistogram )
     return;
-  getMem1D<UInt>( &( m_puiHistogram ), m_uiHistoSegments * histoChannels );
 
+  m_bHasHistogram = new UInt[m_uiHistoSegments * histoChannels];
+  //getMem1D<UInt>( &( m_puiHistogram ), m_uiHistoSegments * histoChannels );
   if( !m_puiHistogram )
   {
-//    qWarning( ) << "PlaYUVerFrameStats::calcHistogramValuess: "
-//                "Unable to allocate memory!"
-//                << endl;
+//    qWarning() << "PlaYUVerFrameStats::calcHistogramValuess: "
+//        "Unable to allocate memory!" << endl;
     return;
   }
 
+  m_bRunningFlag = true;
+
   UInt i, j;
 
   if( imageColorSpace == PlaYUVerFrame::COLOR_YUV )
@@ -135,6 +139,7 @@ Void PlaYUVerFrameStats::calcHistogram()
     }
   }
   m_bHasHistogram = true;
+  m_bRunningFlag = false;
 }
 
 Int PlaYUVerFrameStats::getHistogramSegment()
diff --git a/lib/PlaYUVerStream.cpp b/lib/PlaYUVerStream.cpp
index 5b09f1e..aefc34a 100644
--- a/lib/PlaYUVerStream.cpp
+++ b/lib/PlaYUVerStream.cpp
@@ -384,6 +384,46 @@ Bool PlaYUVerStream::open( std::string filename, UInt width, UInt height, Int in
   return m_bInit;
 }
 
+Bool PlaYUVerStream::reload()
+{
+#ifdef USE_FFMPEG
+  if( m_iStreamHandler == FFMPEG )
+  {
+    m_cLibAvContext->closeAvFormat();
+    if( !m_cLibAvContext->initAvFormat( m_pchFilename, m_uiWidth, m_uiHeight, m_iPixelFormat, m_dFrameRate, m_uiTotalFrameNum ) )
+    {
+      throw "Cannot open file using FFmpeg libs";
+    }
+    m_cCodedName = m_cLibAvContext->getCodecName();
+  }
+#endif
+  if( m_iStreamHandler == YUV_IO )
+  {
+    closeFile();
+    if( !openFile() )
+    {
+      return false;
+    }
+    UInt64 frameBytesInput = m_pcCurrFrame->getBytesPerFrame();
+    fseek( m_pFile, 0, SEEK_END );
+    UInt64 fileSize = ftell( m_pFile );
+    m_uiTotalFrameNum = fileSize / frameBytesInput;
+    fseek( m_pFile, 0, SEEK_SET );
+  }
+  if( m_uiWidth <= 0 || m_uiHeight <= 0 || m_iPixelFormat < 0 || m_uiTotalFrameNum < 1 )
+  {
+    return false;
+  }
+  if( UInt( m_iCurrFrameNum ) >= m_uiTotalFrameNum )
+  {
+    m_iCurrFrameNum = 0;
+  }
+  Int currFrameNum = m_iCurrFrameNum;
+  m_iCurrFrameNum = -1;
+  seekInput( currFrameNum );
+  return true;
+}
+
 Bool PlaYUVerStream::openFile()
 {
 //m_fsIOStream.open( m_cFilename,  std::ios::in | std::ios::binary )
@@ -744,6 +784,8 @@ Bool PlaYUVerStream::seekInput( UInt64 new_frame_num )
 #endif
   if( m_iStreamHandler == YUV_IO )
   {
+    if( !m_pFile )
+      return false;
     UInt64 frame_bytes_input = m_ppcFrameBuffer[0]->getBytesPerFrame();
     UInt64 nbytes_seek = frame_bytes_input * new_frame_num;
     fseek( m_pFile, nbytes_seek, SEEK_SET );
diff --git a/lib/PlaYUVerStream.h b/lib/PlaYUVerStream.h
index c0b1b82..29be023 100644
--- a/lib/PlaYUVerStream.h
+++ b/lib/PlaYUVerStream.h
@@ -122,6 +122,9 @@ public:
 
   Bool open( std::string filename, std::string resolution, std::string input_format, UInt bitsPel, UInt frame_rate, Bool bInput = true );
   Bool open( std::string filename, UInt width, UInt height, Int input_format, UInt bitsPel, UInt frame_rate, Bool bInput = true );
+
+  Bool reload();
+
   Void close();
 
   Bool openFile();