diff --git a/app/avTranscoder/avTranscoder.cpp b/app/avTranscoder/avTranscoder.cpp
index 7c50f23e..32bc0d5e 100644
--- a/app/avTranscoder/avTranscoder.cpp
+++ b/app/avTranscoder/avTranscoder.cpp
@@ -64,7 +64,7 @@ void transcodeVideo( const char* inputfilename, const char* outputFilename )
 
 	videoDesc.setTimeBase( 1, 25 ); // 25 fps
 
-	videoDesc.setImageParameters( sourceImage );
+	videoDesc.setImageParameters( sourceImage.desc() );
 
 	//videoDesc.initCodecContext();
 
diff --git a/app/avplay/AvReader.hpp b/app/avplay/AvReader.hpp
index ee3facbc..7dc2a398 100644
--- a/app/avplay/AvReader.hpp
+++ b/app/avplay/AvReader.hpp
@@ -16,7 +16,7 @@
 class AvReader : public Reader
 {
 public:
-	AvReader( std::string filename )
+	AvReader( const std::string& filename )
 		: m_inputFile( filename )
 		, m_inputStreamVideo( NULL )
 		, m_sourceImage( NULL )
@@ -38,11 +38,11 @@ class AvReader : public Reader
 		pixel.setAlpha( false );
 		pixel.setPlanar( false );
 
-		imageDescToDisplay.setWidth ( m_sourceImage->desc().getWidth() );
+		imageDescToDisplay.setWidth( m_sourceImage->desc().getWidth() );
 		imageDescToDisplay.setHeight( m_sourceImage->desc().getHeight() );
-		imageDescToDisplay.setDar   ( m_sourceImage->desc().getDar() );
-
-		imageDescToDisplay.setPixel ( pixel.findPixel() );
+		imageDescToDisplay.setDar( m_sourceImage->desc().getDar() );
+		
+		imageDescToDisplay.setPixel( pixel.findPixel() );
 		
 		m_imageToDisplay = new avtranscoder::Image( imageDescToDisplay );
 	}
@@ -105,6 +105,7 @@ class AvReader : public Reader
 
 private:
 	avtranscoder::InputFile m_inputFile;
+	
 	avtranscoder::InputStreamVideo* m_inputStreamVideo;
 
 	avtranscoder::Image* m_sourceImage;
@@ -117,4 +118,4 @@ class AvReader : public Reader
 	size_t m_videoStream;
 };
 
-#endif
\ No newline at end of file
+#endif
diff --git a/src/AvTranscoder/AvInputStream.cpp b/src/AvTranscoder/AvInputStream.cpp
index 1ee2c77a..b1ec7381 100644
--- a/src/AvTranscoder/AvInputStream.cpp
+++ b/src/AvTranscoder/AvInputStream.cpp
@@ -29,9 +29,9 @@ AvInputStream::AvInputStream( )
 {
 }
 
-AvInputStream::AvInputStream( InputFile* inputFile, const size_t streamIndex )
+AvInputStream::AvInputStream( InputFile& inputFile, const size_t streamIndex )
 		: InputStream( )
-		, m_inputFile( inputFile )
+		, m_inputFile( &inputFile )
 		, m_packetDuration( 0 )
 		, m_streamIndex( streamIndex )
 		, m_bufferized( false )
@@ -44,6 +44,9 @@ AvInputStream::~AvInputStream( )
 
 bool AvInputStream::readNextPacket( DataStream& data )
 {
+	if( ! m_bufferized )
+		throw std::runtime_error( "Can't read packet on non-bufferized input stream." );
+
 	if( m_streamCache.empty() )
 		m_inputFile->readNextPacket( m_streamIndex );
 
@@ -137,4 +140,4 @@ void AvInputStream::clearBuffering()
 	m_streamCache.clear();
 }
 
-}
\ No newline at end of file
+}
diff --git a/src/AvTranscoder/AvInputStream.hpp b/src/AvTranscoder/AvInputStream.hpp
index 1411aaf3..d9cdcc44 100644
--- a/src/AvTranscoder/AvInputStream.hpp
+++ b/src/AvTranscoder/AvInputStream.hpp
@@ -13,7 +13,7 @@ class AvExport AvInputStream : public InputStream
 public:
 	AvInputStream( );
 
-	AvInputStream( InputFile* inputFile, const size_t streamIndex );
+	AvInputStream( InputFile& inputFile, const size_t streamIndex );
 	~AvInputStream( );
 
 	AvInputStream( const AvInputStream& inputStream )
diff --git a/src/AvTranscoder/DatasStructures/Image.hpp b/src/AvTranscoder/DatasStructures/Image.hpp
index 0001cd49..43e2e512 100644
--- a/src/AvTranscoder/DatasStructures/Image.hpp
+++ b/src/AvTranscoder/DatasStructures/Image.hpp
@@ -24,8 +24,6 @@ extern "C" {
 namespace avtranscoder
 {
 
-typedef std::vector< unsigned char > DataBuffer;
-
 // struct ColorProperties
 // {
 // 	//EColorspace     eColorspace;
@@ -78,9 +76,14 @@ class AvExport ImageDesc
 	bool            m_topFieldFirst;
 };
 
+//template< template<typename> Alloc >
+//class AvExport ImageBase
 class AvExport Image
 {
 public:
+//	typedef std::vector< unsigned char, Alloc<unsigned char> > DataBuffer;
+	typedef std::vector< unsigned char> DataBuffer;
+
 	Image( const ImageDesc& ref )
 		: m_dataBuffer( ref.getDataSize(), 0 )
 		, m_imageDesc( ref )
@@ -99,6 +102,8 @@ class AvExport Image
 	const ImageDesc m_imageDesc;
 };
 
+//typedef ImageBase<std::allocator> Image;
+
 }
 
 #endif
diff --git a/src/AvTranscoder/DatasStructures/VideoDesc.cpp b/src/AvTranscoder/DatasStructures/VideoDesc.cpp
index c9f24f67..785e321a 100644
--- a/src/AvTranscoder/DatasStructures/VideoDesc.cpp
+++ b/src/AvTranscoder/DatasStructures/VideoDesc.cpp
@@ -49,9 +49,9 @@ void VideoDesc::setVideoCodec( const AVCodecID codecId )
 	initCodecContext();
 }
 
-void VideoDesc::setImageParameters( const Image& image )
+void VideoDesc::setImageParameters( const ImageDesc& imageDesc )
 {
-	setImageParameters( image.desc().getWidth(), image.desc().getHeight(), image.desc().getPixelDesc() );
+	setImageParameters( imageDesc.getWidth(), imageDesc.getHeight(), imageDesc.getPixelDesc() );
 }
 
 
diff --git a/src/AvTranscoder/DatasStructures/VideoDesc.hpp b/src/AvTranscoder/DatasStructures/VideoDesc.hpp
index 5fa9bdd6..be0515b6 100644
--- a/src/AvTranscoder/DatasStructures/VideoDesc.hpp
+++ b/src/AvTranscoder/DatasStructures/VideoDesc.hpp
@@ -30,7 +30,7 @@ class AvExport VideoDesc
 	void setVideoCodec( const std::string& codecName );
 	void setVideoCodec( const AVCodecID codecId );
 
-	void setImageParameters( const Image& image );
+	void setImageParameters( const ImageDesc& imageDesc );
 	void setImageParameters( const size_t width, const size_t height, const Pixel& pixel );
 	void setImageParameters( const size_t width, const size_t height, const AVPixelFormat& pixel );
 
diff --git a/src/AvTranscoder/InputFile.cpp b/src/AvTranscoder/InputFile.cpp
index 8da8a4cb..37cfc27a 100644
--- a/src/AvTranscoder/InputFile.cpp
+++ b/src/AvTranscoder/InputFile.cpp
@@ -49,7 +49,7 @@ InputFile::InputFile( const std::string& filename )
 
 	for( size_t streamIndex = 0; streamIndex < m_formatContext->nb_streams; ++streamIndex )
 	{
-		m_inputStreams.push_back( new AvInputStream( this, streamIndex ) );
+		m_inputStreams.push_back( new AvInputStream( *this, streamIndex ) );
 	}
 }
 
@@ -180,7 +180,7 @@ bool InputFile::readNextPacket( const size_t streamIndex )
 
 void InputFile::seekAtFrame( const size_t frame )
 {
-	uint64_t pos = frame / 25 * AV_TIME_BASE; 
+	uint64_t pos = frame / 25 * AV_TIME_BASE;  // WARNING: hardcoded fps
 
 	if( (int)m_formatContext->start_time != AV_NOPTS_VALUE )
 		pos += m_formatContext->start_time;
diff --git a/src/AvTranscoder/InputFile.hpp b/src/AvTranscoder/InputFile.hpp
index 552474ab..d41eb56d 100644
--- a/src/AvTranscoder/InputFile.hpp
+++ b/src/AvTranscoder/InputFile.hpp
@@ -38,7 +38,7 @@ class AvExport InputFile
 
 	AVMediaType getStreamType( size_t index );
 
-	::avtranscoder::AvInputStream& getStream( size_t index );
+	AvInputStream& getStream( size_t index );
 
 	AVFormatContext& getFormatContext() const { return *m_formatContext; }
 
@@ -46,6 +46,7 @@ class AvExport InputFile
 
 	void seekAtFrame( const size_t frame );
 
+	/// @brief Indicate that the stream should be bufferized
 	void readStream( const size_t streamIndex, const bool readStream = true );
 
 protected:
diff --git a/src/AvTranscoder/InputStream.hpp b/src/AvTranscoder/InputStream.hpp
index c8998ecc..ba220303 100644
--- a/src/AvTranscoder/InputStream.hpp
+++ b/src/AvTranscoder/InputStream.hpp
@@ -20,7 +20,7 @@ class InputStream
 
 	virtual bool readNextPacket( DataStream& data ) = 0;
 
-	// Stream propeerties
+	// Stream properties
 	virtual VideoDesc getVideoDesc() const = 0;
 	virtual AudioDesc getAudioDesc() const = 0;
 
@@ -30,8 +30,6 @@ class InputStream
 	virtual void setBufferred( const bool bufferized ) = 0;
 
 	virtual void clearBuffering() = 0;
-
-private:
 };
 
 }
diff --git a/src/AvTranscoder/InputStreamAudio.cpp b/src/AvTranscoder/InputStreamAudio.cpp
index 3e27d4b5..e5228ad6 100644
--- a/src/AvTranscoder/InputStreamAudio.cpp
+++ b/src/AvTranscoder/InputStreamAudio.cpp
@@ -43,6 +43,8 @@ InputStreamAudio::InputStreamAudio( const InputStream& inputStream )
 	std::cout << "Audio codec Id : " << m_codecContext->codec_id << std::endl;
 	std::cout << "Audio codec Id : " << m_codec->long_name << std::endl;
 
+	m_codecContext->channels = m_inputStream->getAudioDesc().getCodecContext()->channels;
+	
 	int ret = avcodec_open2( m_codecContext, m_codec, NULL );
 
 	std::cout << "ret value : " << ret << std::endl;
@@ -99,8 +101,7 @@ InputStreamAudio::~InputStreamAudio()
 
 bool InputStreamAudio::readNextFrame( AudioFrame& audioFrameBuffer )
 {
-/*
-	int got_frame = 0;
+	/*int got_frame = 0;
 	while( ! got_frame )
 	{
 		AVPacket packet;
@@ -112,6 +113,10 @@ bool InputStreamAudio::readNextFrame( AudioFrame& audioFrameBuffer )
 			return false;
 		}
 
+		packet.stream_index = m_selectedStream;
+		packet.data         = audioFrameBuffer.getPtr();
+		packet.size         = audioFrameBuffer.getSize();
+		
 		int ret = avcodec_decode_audio4( m_codecContext, m_frame, &got_frame, &packet );
 
 		if( ret < 0 )
@@ -120,8 +125,8 @@ bool InputStreamAudio::readNextFrame( AudioFrame& audioFrameBuffer )
 		}
 
 		av_free_packet( &packet );
-	}*/
-
+	}
+*/
 	//size_t unpadded_linesize = m_frame->nb_samples * av_get_bytes_per_sample( m_frame->format );
 
 	// size_t decodedSize = avpicture_get_size( (AVPixelFormat)m_frame->format, m_frame->width, m_frame->height );
diff --git a/src/AvTranscoder/InputStreamVideo.cpp b/src/AvTranscoder/InputStreamVideo.cpp
index 96c1d49f..fdcd9aec 100644
--- a/src/AvTranscoder/InputStreamVideo.cpp
+++ b/src/AvTranscoder/InputStreamVideo.cpp
@@ -92,7 +92,6 @@ InputStreamVideo::~InputStreamVideo()
 
 bool InputStreamVideo::readNextFrame( Image& frameBuffer )
 {
-	
 	int got_frame = 0;
 
 	while( ! got_frame )
diff --git a/src/AvTranscoder/InputStreamVideo.hpp b/src/AvTranscoder/InputStreamVideo.hpp
index 0ff91aba..c83a2d4f 100644
--- a/src/AvTranscoder/InputStreamVideo.hpp
+++ b/src/AvTranscoder/InputStreamVideo.hpp
@@ -21,7 +21,7 @@ class AvExport InputStreamVideo
 public:
 	InputStreamVideo( AvInputStream& inputStream );
 	~InputStreamVideo();
-
+	
 	bool readNextFrame( Image& frameBuffer );
 
 	void flushDecoder();
diff --git a/src/AvTranscoder/Transcoder.tcc b/src/AvTranscoder/Transcoder.tcc
index b84ae0ee..631f80ad 100644
--- a/src/AvTranscoder/Transcoder.tcc
+++ b/src/AvTranscoder/Transcoder.tcc
@@ -1,3 +1,4 @@
+
 #include <AvTranscoder/InputFile.hpp>
 
 #include <AvTranscoder/AvInputStream.hpp>
@@ -66,13 +67,13 @@ void Transcoder::add( const std::string& filename, const size_t streamIndex )
 	{
 		case AVMEDIA_TYPE_VIDEO:
 		{
-			_inputStreams.push_back( &referenceFile->getStream( streamIndex ) );
+			_inputStreams.push_back( & referenceFile->getStream( streamIndex ) );
 			_outputFile.addVideoStream( _inputStreams.back()->getVideoDesc() );
 			break;
 		}
 		case AVMEDIA_TYPE_AUDIO:
 		{
-			_inputStreams.push_back( &referenceFile->getStream( streamIndex ) );
+			_inputStreams.push_back( & referenceFile->getStream( streamIndex ) );
 			_outputFile.addAudioStream( _inputStreams.back()->getAudioDesc() );
 			break;
 		}
diff --git a/src/AvTranscoder/avTranscoder.i b/src/AvTranscoder/avTranscoder.i
index bcacb3e7..429e3a11 100644
--- a/src/AvTranscoder/avTranscoder.i
+++ b/src/AvTranscoder/avTranscoder.i
@@ -20,17 +20,18 @@
 
 #include <AvTranscoder/Metadatas/MediaMetadatasStructures.hpp>
 
-#include <AvTranscoder/InputFile.hpp>
-#include <AvTranscoder/OutputFile.hpp>
-
 #include <AvTranscoder/OutputStream.hpp>
 #include <AvTranscoder/OutputStreamAudio.hpp>
 #include <AvTranscoder/OutputStreamVideo.hpp>
 
 #include <AvTranscoder/InputStream.hpp>
+#include <AvTranscoder/AvInputStream.hpp>
 #include <AvTranscoder/InputStreamAudio.hpp>
 #include <AvTranscoder/InputStreamVideo.hpp>
 
+#include <AvTranscoder/InputFile.hpp>
+#include <AvTranscoder/OutputFile.hpp>
+
 #include <AvTranscoder/Transcoder.hpp>
 
 %}
@@ -59,15 +60,16 @@ namespace std {
 
 %include <AvTranscoder/Metadatas/MediaMetadatasStructures.hpp>
 
-%include <AvTranscoder/InputFile.hpp>
-%include <AvTranscoder/OutputFile.hpp>
-
 %include <AvTranscoder/OutputStream.hpp>
 %include <AvTranscoder/OutputStreamAudio.hpp>
 %include <AvTranscoder/OutputStreamVideo.hpp>
 
 %include <AvTranscoder/InputStream.hpp>
+%include <AvTranscoder/AvInputStream.hpp>
 %include <AvTranscoder/InputStreamAudio.hpp>
 %include <AvTranscoder/InputStreamVideo.hpp>
 
+%include <AvTranscoder/InputFile.hpp>
+%include <AvTranscoder/OutputFile.hpp>
+
 %include <AvTranscoder/Transcoder.hpp>