diff --git a/inc/V4l2RTSPServer.h b/inc/V4l2RTSPServer.h
index 517e858..ec3935a 100644
--- a/inc/V4l2RTSPServer.h
+++ b/inc/V4l2RTSPServer.h
@@ -144,7 +144,7 @@ class V4l2RTSPServer {
         StreamReplicator* CreateVideoReplicator( 
 					const V4L2DeviceParameters& inParam,
 					int queueSize, int useThread, int repeatConfig,
-					const std::string& outputFile, V4l2IoType ioTypeOut, V4l2Output* out,
+					const std::string& outputFile, V4l2IoType ioTypeOut, V4l2Output*& out,
 					std::string& rtpVideoFormat);
 
 #ifdef HAVE_ALSA
@@ -287,4 +287,4 @@ class V4l2RTSPServer {
         UsageEnvironment* m_env;	
         RTSPServer*       m_rtspServer;
         int               m_rtspPort;
-};
\ No newline at end of file
+};
diff --git a/main.cpp b/main.cpp
index e546add..975030c 100755
--- a/main.cpp
+++ b/main.cpp
@@ -321,10 +321,12 @@ int main(int argc, char** argv)
 			decodeDevice(deviceName, videoDev, audioDev);
 			
 			std::string baseUrl;
+			std::string output(outputFile);
 			if (devList.size() > 1)
 			{
 				baseUrl = getDeviceName(videoDev);
 				baseUrl.append("/");
+				output.append(getDeviceName(videoDev));
 			}
 
 			V4l2Output* out = NULL;
@@ -333,7 +335,7 @@ int main(int argc, char** argv)
 			StreamReplicator* videoReplicator = rtspServer.CreateVideoReplicator( 
 					inParam,
 					queueSize, useThread, repeatConfig,
-					outputFile + getDeviceName(videoDev), ioTypeOut, out,
+					output, ioTypeOut, out,
 					rtpVideoFormat);
 			if (out != NULL) {
 				outList.push_back(out);
diff --git a/src/V4l2RTSPServer.cpp b/src/V4l2RTSPServer.cpp
index 3f2ed43..dd1840d 100644
--- a/src/V4l2RTSPServer.cpp
+++ b/src/V4l2RTSPServer.cpp
@@ -26,7 +26,7 @@
 StreamReplicator* V4l2RTSPServer::CreateVideoReplicator( 
 					const V4L2DeviceParameters& inParam,
 					int queueSize, int useThread, int repeatConfig,
-					const std::string& outputFile, V4l2IoType ioTypeOut, V4l2Output* out,
+					const std::string& outputFile, V4l2IoType ioTypeOut, V4l2Output*& out,
 					std::string& rtpVideoFormat) {
 
 	StreamReplicator* videoReplicator = NULL;
@@ -48,6 +48,9 @@ StreamReplicator* V4l2RTSPServer::CreateVideoReplicator(
 				if (out != NULL)
 				{
 					outfd = out->getFd();
+					LOG(INFO) << "Output fd:" << outfd << " " << outputFile;
+				} else {
+					LOG(WARN) << "Cannot open output:" << outputFile;
 				}
 			}
 			
@@ -197,4 +200,4 @@ StreamReplicator* V4l2RTSPServer::CreateAudioReplicator(
 	}	
 	return audioReplicator;
 }
-#endif
\ No newline at end of file
+#endif