diff -r c3d8469cc68e -r 4acd189a563e QTfrontend/net/recorder.cpp
--- a/QTfrontend/net/recorder.cpp	Wed Aug 01 23:12:37 2018 +0200
+++ b/QTfrontend/net/recorder.cpp	Tue Jul 17 12:17:11 2018 +0200
@@ -140,7 +140,10 @@
 // Could use a field to use quality instead. maybe quality could override bitrate - or just pass (and set) both.
 // The library does support using both at once after all.
     arguments << QString::number(config->rec_Bitrate()*1024);
-    arguments << (config->recordAudio() ? config->audioCodec() : "no");
+    if (config->recordAudio() && (config->isSoundEnabled() || config->isMusicEnabled()))
+        arguments << config->audioCodec();
+    else
+        arguments << "no";
 
     return arguments;
 }