diff --git a/src/AvTranscoder/EssenceStream/OutputAudio.cpp b/src/AvTranscoder/EssenceStream/OutputAudio.cpp
index e7730cc7..2d6d83af 100644
--- a/src/AvTranscoder/EssenceStream/OutputAudio.cpp
+++ b/src/AvTranscoder/EssenceStream/OutputAudio.cpp
@@ -191,12 +191,54 @@ void OutputAudio::setProfile( Profile::ProfileDesc& desc, const AudioFrameDesc&
 		throw std::runtime_error( "Profile " + desc[ Profile::avProfileIdentificatorHuman ] + ": bad audio channel layout." );
 	
 	_audioDesc.setAudioCodec( desc[ Profile::avProfileCodec ] );
+	
 	size_t sample_rate = std::strtoul( desc[ Profile::avProfileSampleRate ].c_str(), NULL, 0 );
 	size_t channels = std::strtoul( desc[ Profile::avProfileChannel ].c_str(), NULL, 0 );
-	
 	_audioDesc.setAudioParameters( sample_rate, channels, av_get_sample_fmt( desc[ Profile::avProfileSampleFormat ].c_str() ) );
+	
+	for( Profile::ProfileDesc::iterator it = desc.begin(); it != desc.end(); ++it )
+	{
+		if( (*it).first == Profile::avProfileIdentificator ||
+			(*it).first == Profile::avProfileIdentificatorHuman ||
+			(*it).first == Profile::avProfileType ||
+			(*it).first == Profile::avProfileCodec ||
+			(*it).first == Profile::avProfileSampleFormat ||
+			(*it).first == Profile::avProfileSampleRate ||
+			(*it).first == Profile::avProfileChannel )
+			continue;
+
+		try
+		{
+			_audioDesc.set( (*it).first, (*it).second );
+		}
+		catch( std::exception& e )
+		{
+			std::cout << "warning: " << e.what() << std::endl;
+		}
+	}
 
 	setup();
+
+	for( Profile::ProfileDesc::iterator it = desc.begin(); it != desc.end(); ++it )
+	{
+		if( (*it).first == Profile::avProfileIdentificator ||
+			(*it).first == Profile::avProfileIdentificatorHuman ||
+			(*it).first == Profile::avProfileType ||
+			(*it).first == Profile::avProfileCodec ||
+			(*it).first == Profile::avProfileSampleFormat ||
+			(*it).first == Profile::avProfileSampleRate ||
+			(*it).first == Profile::avProfileChannel )
+			continue;
+
+		try
+		{
+			_audioDesc.set( (*it).first, (*it).second );
+		}
+		catch( std::exception& e )
+		{
+			std::cout << "2.warning: " << e.what() << std::endl;
+		}
+	}
 }
 
 }
diff --git a/src/AvTranscoder/EssenceStream/OutputVideo.cpp b/src/AvTranscoder/EssenceStream/OutputVideo.cpp
index 42e212f1..a340c23b 100644
--- a/src/AvTranscoder/EssenceStream/OutputVideo.cpp
+++ b/src/AvTranscoder/EssenceStream/OutputVideo.cpp
@@ -201,21 +201,14 @@ void OutputVideo::setProfile( Profile::ProfileDesc& desc, const avtranscoder::Im
 
 	for( Profile::ProfileDesc::iterator it = desc.begin(); it != desc.end(); ++it )
 	{
-		if( (*it).first == Profile::avProfileIdentificator )
-			continue;
-		if( (*it).first == Profile::avProfileIdentificatorHuman )
-			continue;
-		if( (*it).first == Profile::avProfileType )
-			continue;
-		if( (*it).first == Profile::avProfileCodec )
-			continue;
-		if( (*it).first == Profile::avProfilePixelFormat )
-			continue;
-		if( (*it).first == Profile::avProfileWidth )
-			continue;
-		if( (*it).first == Profile::avProfileHeight )
-			continue;
-		if( (*it).first == Profile::avProfileFrameRate )
+		if( (*it).first == Profile::avProfileIdentificator ||
+			(*it).first == Profile::avProfileIdentificatorHuman ||
+			(*it).first == Profile::avProfileType ||
+			(*it).first == Profile::avProfileCodec ||
+			(*it).first == Profile::avProfilePixelFormat ||
+			(*it).first == Profile::avProfileWidth ||
+			(*it).first == Profile::avProfileHeight||
+			(*it).first == Profile::avProfileFrameRate)
 			continue;
 
 		try
@@ -232,21 +225,14 @@ void OutputVideo::setProfile( Profile::ProfileDesc& desc, const avtranscoder::Im
 
 	for( Profile::ProfileDesc::iterator it = desc.begin(); it != desc.end(); ++it )
 	{
-		if( (*it).first == Profile::avProfileIdentificator )
-			continue;
-		if( (*it).first == Profile::avProfileIdentificatorHuman )
-			continue;
-		if( (*it).first == Profile::avProfileType )
-			continue;
-		if( (*it).first == Profile::avProfileCodec )
-			continue;
-		if( (*it).first == Profile::avProfilePixelFormat )
-			continue;
-		if( (*it).first == Profile::avProfileWidth )
-			continue;
-		if( (*it).first == Profile::avProfileHeight )
-			continue;
-		if( (*it).first == Profile::avProfileFrameRate )
+		if( (*it).first == Profile::avProfileIdentificator ||
+			(*it).first == Profile::avProfileIdentificatorHuman ||
+			(*it).first == Profile::avProfileType ||
+			(*it).first == Profile::avProfileCodec ||
+			(*it).first == Profile::avProfilePixelFormat ||
+			(*it).first == Profile::avProfileWidth ||
+			(*it).first == Profile::avProfileHeight||
+			(*it).first == Profile::avProfileFrameRate)
 			continue;
 
 		try
diff --git a/src/AvTranscoder/OptionLoader.cpp b/src/AvTranscoder/OptionLoader.cpp
index 00867a01..802c5812 100644
--- a/src/AvTranscoder/OptionLoader.cpp
+++ b/src/AvTranscoder/OptionLoader.cpp
@@ -7,6 +7,7 @@ extern "C" {
 #include <libavutil/opt.h>
 #include <libavutil/pixfmt.h>
 #include <libavutil/pixdesc.h>
+#include <libavutil/samplefmt.h>
 }
 
 #ifndef AV_OPT_FLAG_FILTERING_PARAM
@@ -300,9 +301,9 @@ std::vector<std::string> OptionLoader::getPixelFormats( const std::string& video
 	// specific video codec
 	else
 	{
-		AVCodec* videoCodec = avcodec_find_encoder_by_name( videoCodecName.c_str() );
+		const AVCodec* videoCodec = avcodec_find_encoder_by_name( videoCodecName.c_str() );
 
-		if( videoCodec->pix_fmts != NULL )
+		if( videoCodec && videoCodec->pix_fmts != NULL )
 		{
 			size_t pix_fmt = 0;
 			while( videoCodec->pix_fmts[pix_fmt] != -1 )
@@ -322,4 +323,34 @@ std::vector<std::string> OptionLoader::getPixelFormats( const std::string& video
 	return pixelFormats;
 }
 
+std::vector<std::string> OptionLoader::getSampleFormats( const std::string& audioCodecName ) const
+{
+	std::vector<std::string> sampleFormats;
+	
+	if( audioCodecName.empty() )
+	{
+		for( size_t sampleFormat = 0; sampleFormat < AV_SAMPLE_FMT_NB; ++sampleFormat)
+		{
+			sampleFormats.push_back( av_get_sample_fmt_name( static_cast<AVSampleFormat>( sampleFormat ) ) );
+		}
+	}
+	else
+	{
+		const AVCodec* audioCodec = avcodec_find_encoder_by_name( audioCodecName.c_str() );
+		if( audioCodec && audioCodec->sample_fmts != NULL )
+		{
+			size_t sample_fmt = 0;
+			while( audioCodec->sample_fmts[sample_fmt] != -1 )
+			{
+				const char* sampleFormatName = av_get_sample_fmt_name( audioCodec->sample_fmts[sample_fmt] );
+				if( sampleFormatName )
+					sampleFormats.push_back( std::string( sampleFormatName ) );
+				sample_fmt++;
+			}
+		}
+	}
+	
+	return sampleFormats;
+}
+
 }
diff --git a/src/AvTranscoder/OptionLoader.hpp b/src/AvTranscoder/OptionLoader.hpp
index 0acb7efc..d0296071 100644
--- a/src/AvTranscoder/OptionLoader.hpp
+++ b/src/AvTranscoder/OptionLoader.hpp
@@ -62,11 +62,17 @@ class OptionLoader
 	std::vector<std::string>& getAudioCodecsShortNames() { return _audioCodecsShortNames; }
 	
 	/**
-	 *  Get array of pixel format supported by video codec.
+	 *  Get array of pixel format supported by a video codec.
 	 *  @param videoCodecName: the video codec name (empty if not indicated, and so get all pixel formats supported by all video codecs).
 	 */
 	std::vector<std::string> getPixelFormats( const std::string& videoCodecName = "" ) const;
 	
+	/**
+	 *  Get array of sample format supported by an audio codec.
+	 *  @param audioCodecName: the audio codec name (empty if not indicated, and so get all sample formats supported by all audio codecs).
+	 */
+	std::vector<std::string> getSampleFormats( const std::string& audioCodecName = "" ) const;
+	
 private:
 	/**
 	 * @brief: load array of Option depending on the flags.