diff --git a/src/FFmpegReader.cpp b/src/FFmpegReader.cpp
index aab11460..2225e72c 100644
--- a/src/FFmpegReader.cpp
+++ b/src/FFmpegReader.cpp
@@ -334,7 +334,7 @@ void FFmpegReader::Open()
 								pCodecCtx->coded_width > constraints->max_width  	||
 								pCodecCtx->coded_height > constraints->max_height) {
               ZmqLogger::Instance()->AppendDebugMethod("DIMENSIONS ARE TOO LARGE for hardware acceleration\n", "", -1, "", -1, "", -1, "", -1, "", -1, "", -1);
-							cerr << "DIMENSIONS ARE TOO LARGE for hardware acceleration\n";
+							//cerr << "DIMENSIONS ARE TOO LARGE for hardware acceleration\n";
 							hw_de_supported = 0;
 							retry_decode_open = 1;
 							AV_FREE_CONTEXT(pCodecCtx);
@@ -345,10 +345,10 @@ void FFmpegReader::Open()
 						}
 						else {
 							// All is just peachy
-              ZmqLogger::Instance()->AppendDebugMethod("\nDecode hardware acceleration is used\n", "", -1, "", -1, "", -1, "", -1, "", -1, "", -1);
-              cerr << "\nDecode hardware acceleration is used\n";
-							cerr << "Min width   : " << constraints->min_width << " MinHeight    : " << constraints->min_height << "MaxWidth : " << constraints->max_width << "MaxHeight : " << constraints->max_height << "\n";
-							cerr << "Frame width : " << pCodecCtx->coded_width << " Frame height : " << pCodecCtx->coded_height << "\n";
+              ZmqLogger::Instance()->AppendDebugMethod("\nDecode hardware acceleration is used\n", "Min width :", constraints->min_width, "Min Height :", constraints->min_height, "MaxWidth :", constraints->max_width, "MaxHeight :", constraints->max_height, "Frame width :", pCodecCtx->coded_width, "Frame height :", pCodecCtx->coded_height);
+              //cerr << "\nDecode hardware acceleration is used\n";
+							//cerr << "Min width   : " << constraints->min_width << " MinHeight    : " << constraints->min_height << "MaxWidth : " << constraints->max_width << "MaxHeight : " << constraints->max_height << "\n";
+							//cerr << "Frame width : " << pCodecCtx->coded_width << " Frame height : " << pCodecCtx->coded_height << "\n";
 							retry_decode_open = 0;
 						}
 						av_hwframe_constraints_free(&constraints);
@@ -360,15 +360,16 @@ void FFmpegReader::Open()
 						int max_h, max_w;
 						max_h = ((getenv( "LIMIT_HEIGHT_MAX" )==NULL) ? MAX_SUPPORTED_HEIGHT : atoi(getenv( "LIMIT_HEIGHT_MAX" )));
 						max_w = ((getenv( "LIMIT_WIDTH_MAX" )==NULL) ? MAX_SUPPORTED_WIDTH : atoi(getenv( "LIMIT_WIDTH_MAX" )));
-						cerr << "Constraints could not be found using default limit\n";
+            ZmqLogger::Instance()->AppendDebugMethod("Constraints could not be found using default limit\n", "", -1, "", -1, "", -1, "", -1, "", -1, "", -1);
+						//cerr << "Constraints could not be found using default limit\n";
 						if (pCodecCtx->coded_width < 0  	||
 								pCodecCtx->coded_height < 0 	||
 								pCodecCtx->coded_width > max_w ||
 								pCodecCtx->coded_height > max_h ) {
-              ZmqLogger::Instance()->AppendDebugMethod("DIMENSIONS ARE TOO LARGE for hardware acceleration\n", "", -1, "", -1, "", -1, "", -1, "", -1, "", -1);
-							cerr << "DIMENSIONS ARE TOO LARGE for hardware acceleration\n";
-              cerr << "  Max Width : " << max_w << " Height : " << max_h << "\n";
-							cerr << "Frame width : " << pCodecCtx->coded_width << " Frame height : " << pCodecCtx->coded_height << "\n";
+              ZmqLogger::Instance()->AppendDebugMethod("DIMENSIONS ARE TOO LARGE for hardware acceleration\n", "Max Width :", max_w, "Max Height :", max_h, "Frame width :", pCodecCtx->coded_width, "Frame height :", pCodecCtx->coded_height, "", -1, "", -1);
+							//cerr << "DIMENSIONS ARE TOO LARGE for hardware acceleration\n";
+              //cerr << "  Max Width : " << max_w << " Height : " << max_h << "\n";
+							//cerr << "Frame width : " << pCodecCtx->coded_width << " Frame height : " << pCodecCtx->coded_height << "\n";
 							hw_de_supported = 0;
 							retry_decode_open = 1;
 							AV_FREE_CONTEXT(pCodecCtx);
@@ -378,17 +379,17 @@ void FFmpegReader::Open()
 							}
 						}
 						else {
-              ZmqLogger::Instance()->AppendDebugMethod("\nDecode hardware acceleration is used\n", "", -1, "", -1, "", -1, "", -1, "", -1, "", -1);
-              cerr << "\nDecode hardware acceleration is used\n";
-              cerr << "  Max Width : " << max_w << " Height : " << max_h << "\n";
-							cerr << "Frame width : " << pCodecCtx->coded_width << " Frame height : " << pCodecCtx->coded_height << "\n";
+              ZmqLogger::Instance()->AppendDebugMethod("\nDecode hardware acceleration is used\n", "Max Width :", max_w, "Max Height :", max_h, "Frame width :", pCodecCtx->coded_width, "Frame height :", pCodecCtx->coded_height, "", -1, "", -1);
+              //cerr << "\nDecode hardware acceleration is used\n";
+              //cerr << "  Max Width : " << max_w << " Height : " << max_h << "\n";
+							//cerr << "Frame width : " << pCodecCtx->coded_width << " Frame height : " << pCodecCtx->coded_height << "\n";
 							retry_decode_open = 0;
 						}
 					}
 				} // if hw_de_on && hw_de_supported
         else {
           ZmqLogger::Instance()->AppendDebugMethod("\nDecode in software is used\n", "", -1, "", -1, "", -1, "", -1, "", -1, "", -1);
-          cerr << "\nDecode in software is used\n";
+          //cerr << "\nDecode in software is used\n";
         }
 				#else
 				retry_decode_open = 0;
diff --git a/src/FFmpegWriter.cpp b/src/FFmpegWriter.cpp
index 840acba1..9791043c 100644
--- a/src/FFmpegWriter.cpp
+++ b/src/FFmpegWriter.cpp
@@ -1254,7 +1254,8 @@ void FFmpegWriter::open_video(AVFormatContext *oc, AVStream *st)
     #endif
   	if (av_hwdevice_ctx_create(&hw_device_ctx, hw_en_av_device_type,
         dev_hw, NULL, 0) < 0) {
-        cerr << "FFmpegWriter::open_video : Codec name: " << info.vcodec.c_str() << " ERROR creating\n";
+        ZmqLogger::Instance()->AppendDebugMethod("FFmpegWriter::open_video : Codec name: ", info.vcodec.c_str(), -1, " ERROR creating\n", -1, "", -1, "", -1, "", -1, "", -1);
+        //cerr << "FFmpegWriter::open_video : Codec name: " << info.vcodec.c_str() << " ERROR creating\n";
         throw InvalidCodec("Could not create hwdevice", path);
   	}
   }
@@ -1860,10 +1861,12 @@ bool FFmpegWriter::write_video_packet(std::shared_ptr<Frame> frame, AVFrame* fra
 		error_code = ret;
 		if (ret < 0 ) {
 			ZmqLogger::Instance()->AppendDebugMethod("FFmpegWriter::write_video_packet (Frame not sent)", "", -1, "", -1, "", -1, "", -1, "", -1, "", -1);
-			if (ret == AVERROR(EAGAIN) )
+			if (ret == AVERROR(EAGAIN) ) {
 				cerr << "Frame EAGAIN" << "\n";
-			if (ret == AVERROR_EOF )
+      }
+			if (ret == AVERROR_EOF ) {
 				cerr << "Frame AVERROR_EOF" << "\n";
+      }
 			avcodec_send_frame(video_codec, NULL);
 		}
 		else {
@@ -1884,10 +1887,12 @@ bool FFmpegWriter::write_video_packet(std::shared_ptr<Frame> frame, AVFrame* fra
 			#if LIBAVFORMAT_VERSION_MAJOR >= 54
 				// Write video packet (older than FFmpeg 3.2)
 				error_code = avcodec_encode_video2(video_codec, &pkt, frame_final, &got_packet_ptr);
-				if (error_code != 0 )
+				if (error_code != 0 ) {
 					cerr << "Frame AVERROR_EOF" << "\n";
-				if (got_packet_ptr == 0 )
+        }
+				if (got_packet_ptr == 0 ) {
 					cerr << "Frame gotpacket error" << "\n";
+        }
 			#else
 				// Write video packet (even older versions of FFmpeg)
 				int video_outbuf_size = 200000;