diff -r 49c82c3e3836 -r 7ee2697a5267 QTfrontend/util/LibavInteraction.cpp
--- a/QTfrontend/util/LibavInteraction.cpp	Tue Nov 10 13:53:40 2015 +0100
+++ b/QTfrontend/util/LibavInteraction.cpp	Thu Nov 12 02:41:40 2015 +0100
@@ -33,8 +33,11 @@
 #include "HWApplication.h"
 
 // compatibility section
+#if LIBAVCODEC_VERSION_INT < AV_VERSION_INT(54, 8, 0)
+#define av_codec_is_encoder(x)          x->encode
+#endif
+
 #if LIBAVCODEC_VERSION_MAJOR < 55
-#define av_codec_is_encoder(x)          x->encode
 #define AVCodecID                       CodecID
 #endif