diff --git a/source/ConfigureFormatDialog.cpp b/source/ConfigureFormatDialog.cpp
index 9781458..238c0a4 100755
--- a/source/ConfigureFormatDialog.cpp
+++ b/source/ConfigureFormatDialog.cpp
@@ -49,7 +49,7 @@ ConfigureFormatDialog::ConfigureFormatDialog( QWidget *parent ) :
   headLayout = new QHBoxLayout();
   headLayout->setObjectName( QStringLiteral( "headLayout" ) );
 
-  dialogTitleLabel = new QLabel( this );
+  dialogTitleLabel = new QLabel();
   dialogTitleLabel->setObjectName( QStringLiteral( "dialogTitleLabel" ) );
   QFont font;
   font.setPointSize( 11 );
@@ -60,7 +60,7 @@ ConfigureFormatDialog::ConfigureFormatDialog( QWidget *parent ) :
 
   headerSpacer = new QSpacerItem( 20, 20, QSizePolicy::Expanding, QSizePolicy::Minimum );
 
-  dialogIconLabel = new QLabel( this );
+  dialogIconLabel = new QLabel( );
   dialogIconLabel->setObjectName( QStringLiteral( "dialogIconLabel" ) );
   dialogIconLabel->setPixmap( QPixmap( ":/images/dialogheader-grid.png" ) );
 
@@ -75,15 +75,15 @@ ConfigureFormatDialog::ConfigureFormatDialog( QWidget *parent ) :
   verticalSpacer = new QSpacerItem( 10, 20, QSizePolicy::Minimum );
   MainLayout->addItem( verticalSpacer );
 
-  standardResolutionLayout = new QHBoxLayout( );
+  standardResolutionLayout = new QHBoxLayout();
   standardResolutionLayout->setObjectName( QStringLiteral( "standardResolutionLayout" ) );
-  standardResolutionLabel = new QLabel( this );
+  standardResolutionLabel = new QLabel( );
   standardResolutionLabel->setObjectName( QStringLiteral( "standardResolutionLabel" ) );
   standardResolutionLabel->setText( QApplication::translate( "ConfigureFormat", "Standard Resolution", 0 ) );
 
   horizontalSpacer = new QSpacerItem( 40, 20, QSizePolicy::Expanding, QSizePolicy::Minimum );
 
-  standardResolutionBox = new QComboBox( this );
+  standardResolutionBox = new QComboBox( );
   standardResolutionBox->setObjectName( QStringLiteral( "standardResolutionBox" ) );
   QSizePolicy sizePolicy( QSizePolicy::MinimumExpanding, QSizePolicy::Fixed );
   sizePolicy.setHorizontalStretch( 0 );
@@ -107,10 +107,10 @@ ConfigureFormatDialog::ConfigureFormatDialog( QWidget *parent ) :
   resolutionGridVerticalSpacer = new QSpacerItem( 10, 20, QSizePolicy::Minimum );
   MainLayout->addItem( resolutionGridVerticalSpacer );
 
-  resolutionGrid = new QGridLayout( this );
+  resolutionGrid = new QGridLayout( );
   resolutionGrid->setObjectName( QStringLiteral( "resolutionGrid" ) );
 
-  resolutionLabel = new QLabel( this );
+  resolutionLabel = new QLabel( );
   resolutionLabel->setObjectName( QStringLiteral( "resolutionLabel" ) );
   QFont font1;
   font1.setBold( true );
@@ -118,23 +118,23 @@ ConfigureFormatDialog::ConfigureFormatDialog( QWidget *parent ) :
   resolutionLabel->setFont( font1 );
   resolutionLabel->setText( QApplication::translate( "ConfigureFormat", "Resolution chosen", 0 ) );
 
-  widthLabel = new QLabel( this );
+  widthLabel = new QLabel( );
   widthLabel->setObjectName( QStringLiteral( "widthLabel" ) );
   widthLabel->setText( QApplication::translate( "ConfigureFormat", "Width", 0 ) );
-  widthSpinBox = new QSpinBox( this );
+  widthSpinBox = new QSpinBox( );
   widthSpinBox->setObjectName( QStringLiteral( "widthSpinBox" ) );
   widthSpinBox->setRange( 0, 5000 );
   widthSpinBox->setValue( 0 );
 
-  heightLabel = new QLabel( this );
+  heightLabel = new QLabel( );
   heightLabel->setObjectName( QStringLiteral( "heightLabel" ) );
   heightLabel->setText( QApplication::translate( "ConfigureFormat", "Height", 0 ) );
-  heightSpinBox = new QSpinBox( this );
+  heightSpinBox = new QSpinBox(  );
   heightSpinBox->setObjectName( QStringLiteral( "heightSpinBox" ) );
   heightSpinBox->setRange( 0, 5000 );
   heightSpinBox->setValue( 0 );
 
-  pixelsLabel = new QLabel( this );
+  pixelsLabel = new QLabel( );
   pixelsLabel->setObjectName( QStringLiteral( "pixelsLabel" ) );
   pixelsLabel->setText( QApplication::translate( "ConfigureFormat", "Pixels", 0 ) );
 
@@ -155,13 +155,13 @@ ConfigureFormatDialog::ConfigureFormatDialog( QWidget *parent ) :
   pixelFormatLayout = new QHBoxLayout( );
   pixelFormatLayout->setObjectName( QStringLiteral( "pixelFormatLayout" ) );
 
-  pixelFormatLabel = new QLabel( this );
+  pixelFormatLabel = new QLabel( );
   pixelFormatLabel->setObjectName( QStringLiteral( "pixelFormatLabel" ) );
   pixelFormatLabel->setText( QApplication::translate( "pixelFormat", "Pixel FormatBox", 0 ) );
 
   pixelFormatHorizontalSpacer = new QSpacerItem( 40, 20, QSizePolicy::Expanding, QSizePolicy::Minimum );
 
-  pixelFormatBox = new QComboBox( this );
+  pixelFormatBox = new QComboBox(  );
   pixelFormatBox->setObjectName( QStringLiteral( "pixelFormatBox" ) );
   QSizePolicy sizePolicyPixelFormat( QSizePolicy::MinimumExpanding, QSizePolicy::Fixed );
   sizePolicyPixelFormat.setHorizontalStretch( 0 );
@@ -184,7 +184,7 @@ ConfigureFormatDialog::ConfigureFormatDialog( QWidget *parent ) :
   verticalSpacerConfirmation = new QSpacerItem( 20, 40, QSizePolicy::Minimum, QSizePolicy::Expanding );
   MainLayout->addItem( verticalSpacerConfirmation );
 
-  dialogButtonOkCancel = new QDialogButtonBox( this );
+  dialogButtonOkCancel = new QDialogButtonBox(  );
   dialogButtonOkCancel->setObjectName( QString::fromUtf8( "dialogButtonBox" ) );
   dialogButtonOkCancel->setStandardButtons( QDialogButtonBox::Cancel | QDialogButtonBox::Ok );
   dialogButtonOkCancel->setCenterButtons( false );
diff --git a/source/InputStream.cpp b/source/InputStream.cpp
index 07f36d4..083dcb5 100755
--- a/source/InputStream.cpp
+++ b/source/InputStream.cpp
@@ -109,7 +109,6 @@ QStringList InputStream::supportedPixelFormatList()
 
 Bool InputStream::needFormatDialog( QString filename )
 {
-  return true;
   QString fileExtension = QFileInfo( filename ).completeSuffix();
   if( !fileExtension.compare( QString( "yuv" ) ) )
   {
@@ -130,7 +129,7 @@ Void InputStream::init( QString filename, UInt width, UInt height, Int input_for
   m_iPixelFormat = input_format;
 
 #ifdef USE_FFMPEG
-  Bool avStatus = m_cLibAvContext.initAvFormat( filename, width, height, input_format );
+  Bool avStatus = m_cLibAvContext.initAvFormat( filename, m_uiWidth, m_uiHeight, m_iPixelFormat );
 #endif
 
   if( m_uiWidth <= 0 || m_uiHeight <= 0 )
diff --git a/source/LibAvContextHandle.cpp b/source/LibAvContextHandle.cpp
index 73e08ed..e926a69 100755
--- a/source/LibAvContextHandle.cpp
+++ b/source/LibAvContextHandle.cpp
@@ -24,7 +24,7 @@
 #include "LibAvContextHandle.h"
 
 #ifdef USE_FFMPEG
-  
+
 #include <cstdio>
 
 #include <QtDebug>
@@ -135,6 +135,19 @@ Bool LibAvContextHandle::initAvFormat( QString filename, UInt& width, UInt& heig
     video_dst_bufsize = ret;
   }
 
+  AVCodecContext *in_codec = fmt_ctx->streams[0]->codec;
+  width = in_codec->width;
+  height = in_codec->height;
+  switch( in_codec->pix_fmt )
+  {
+  case AV_PIX_FMT_YUV420P:
+    pixel_format = PlaYUVerFrame::YUV420;
+    break;
+  case AV_PIX_FMT_GRAY8:
+    pixel_format = PlaYUVerFrame::YUV400;
+    break;
+  }
+
   /* dump input information to stderr */
   av_dump_format( fmt_ctx, 0, src_filename, 0 );
   if( !video_stream )