diff --git a/app/QualityHandle.cpp b/app/QualityHandle.cpp
index 4de2a1e..24efc55 100644
--- a/app/QualityHandle.cpp
+++ b/app/QualityHandle.cpp
@@ -54,7 +54,7 @@ Void QualityHandle::createActions()
   QAction* currAction;
   for( UInt i = 0; i < PlaYUVerFrame::supportedQualityMetricsList().size(); i++ )
   {
-    currAction = new QAction( PlaYUVerFrame::supportedQualityMetricsList()[i].data(), this );
+    currAction = new QAction( PlaYUVerFrame::supportedQualityMetricsList()[i].c_str(), this );
     currAction->setCheckable( true );
     m_actionGroupQualityMetric->addAction( currAction );
     connect( currAction, SIGNAL( triggered() ), m_mapperQualityMetric, SLOT( map() ) );
diff --git a/app/QualityMeasurementSidebar.cpp b/app/QualityMeasurementSidebar.cpp
index ba4fcfb..312d92d 100644
--- a/app/QualityMeasurementSidebar.cpp
+++ b/app/QualityMeasurementSidebar.cpp
@@ -51,7 +51,7 @@ QualityMeasurementSidebar::QualityMeasurementSidebar( QWidget* parent, PlaYUVerS
   m_comboBoxMetric = new QComboBox;
   for( UInt i=0; i<PlaYUVerFrame::supportedQualityMetricsList().size();i++ )
   {
-    m_comboBoxMetric->insertItem( i, PlaYUVerFrame::supportedQualityMetricsList()[i].data() );
+    m_comboBoxMetric->insertItem( i, PlaYUVerFrame::supportedQualityMetricsList()[i].c_str() );
   }
   m_comboBoxMetric->setSizeAdjustPolicy( QComboBox::AdjustToContents );
   m_comboBoxMetric->setSizePolicy( QSizePolicy::Expanding, QSizePolicy::Fixed );
@@ -207,7 +207,7 @@ Void QualityMeasurementSidebar::updateSidebarData()
 Void QualityMeasurementSidebar::updateQualityMetric( Int idx )
 {
   m_comboBoxMetric->setCurrentIndex( idx );
-  QString labelQuality( PlaYUVerFrame::supportedQualityMetricsList()[idx].data() );
+  QString labelQuality( PlaYUVerFrame::supportedQualityMetricsList()[idx].c_str() );
   m_ppcLabelQualityLabel[LUMA]->setText( labelQuality + " Y" );
   m_ppcLabelQualityLabel[CHROMA_U]->setText( labelQuality + " U" );
   m_ppcLabelQualityLabel[CHROMA_V]->setText( labelQuality + " V" );
diff --git a/app/VideoSubWindow.cpp b/app/VideoSubWindow.cpp
index e32c301..caedd80 100644
--- a/app/VideoSubWindow.cpp
+++ b/app/VideoSubWindow.cpp
@@ -213,7 +213,7 @@ Void VideoSubWindow::updateVideoWindowInfo()
     {
       m_cStreamInformation = "Module | ";
     }
-    QString m_cPelFmtName = QString::fromStdString( PlaYUVerFrame::supportedPixelFormatListNames()[m_pcCurrFrame->getPelFormat()].data() );
+    QString m_cPelFmtName = QString::fromStdString( PlaYUVerFrame::supportedPixelFormatListNames()[m_pcCurrFrame->getPelFormat()].c_str() );
     m_cStreamInformation += m_cPelFmtName;
   }
   else
@@ -236,7 +236,7 @@ Bool VideoSubWindow::guessFormat( QString filename, UInt& rWidth, UInt& rHeight,
     QVector<std::string> formats_list = QVector<std::string>::fromStdVector( PlaYUVerFrame::supportedPixelFormatListNames() );
     for( Int i = 0; i < formats_list.size(); i++ )
     {
-      if( FilenameShort.contains( formats_list.at( i ).data(), Qt::CaseInsensitive ) )
+      if( FilenameShort.contains( formats_list.at( i ).c_str(), Qt::CaseInsensitive ) )
       {
         rInputFormat = i;
         break;
diff --git a/lib/PlaYUVerStream.cpp b/lib/PlaYUVerStream.cpp
index df794ff..008e818 100644
--- a/lib/PlaYUVerStream.cpp
+++ b/lib/PlaYUVerStream.cpp
@@ -267,7 +267,7 @@ Bool PlaYUVerStream::open( std::string filename, UInt width, UInt height, Int in
 #ifdef USE_FFMPEG
   if( m_uiStreamHandler == FFMPEG )
   {
-    if( !m_cLibAvContext->initAvFormat( m_cFilename.data(), m_uiWidth, m_uiHeight, m_iPixelFormat, m_uiFrameRate, m_uiTotalFrameNum ) )
+    if( !m_cLibAvContext->initAvFormat( m_cFilename.c_str(), m_uiWidth, m_uiHeight, m_iPixelFormat, m_uiFrameRate, m_uiTotalFrameNum ) )
     {
       throw "Cannot open file using FFmpeg libs";
     }
@@ -341,7 +341,7 @@ Bool PlaYUVerStream::open( std::string filename, UInt width, UInt height, Int in
     return m_bInit;
   }
 
-  m_cPelFmtName = PlaYUVerFrame::supportedPixelFormatListNames()[m_iPixelFormat].data();
+  m_cPelFmtName = PlaYUVerFrame::supportedPixelFormatListNames()[m_iPixelFormat].c_str();
 
   m_iCurrFrameNum = -1;
 
@@ -356,7 +356,7 @@ Bool PlaYUVerStream::open( std::string filename, UInt width, UInt height, Int in
 Bool PlaYUVerStream::openFile()
 {
   m_pFile = NULL;
-  m_pFile = fopen( m_cFilename.data(), m_bIsInput ? "rb" : "wb" );
+  m_pFile = fopen( m_cFilename.c_str(), m_bIsInput ? "rb" : "wb" );
   if( m_pFile == NULL )
   {
     return false;