diff --git a/src/transcode.c b/src/transcode.c
index f5bbd6b7..87262366 100644
--- a/src/transcode.c
+++ b/src/transcode.c
@@ -43,6 +43,7 @@
 
 #include <libavcodec/avcodec.h>
 #include <libavformat/avformat.h>
+#include <libavutil/mathematics.h>
 
 #include "logger.h"
 #include "conffile.h"