diff --git a/plugins/VOIP/VOIP.pro b/plugins/VOIP/VOIP.pro
index e560a8501..660a17221 100644
--- a/plugins/VOIP/VOIP.pro
+++ b/plugins/VOIP/VOIP.pro
@@ -24,8 +24,6 @@ linux-* {
 }
 
 win32 {
-	# ffmpeg
-	QMAKE_CXXFLAGS += -D__STDC_CONSTANT_MACROS
 
 	LIBS_DIR = $$PWD/../../../libs
 	LIBS += -L"$$LIBS_DIR/lib/opencv"
@@ -34,6 +32,9 @@ win32 {
 	LIBS += -lopencv_core$$OPENCV_VERSION -lopencv_highgui$$OPENCV_VERSION -lopencv_imgproc$$OPENCV_VERSION -llibjpeg -llibtiff -llibpng -llibjasper -lIlmImf -lole32 -loleaut32 -luuid -lavicap32 -lavifil32 -lvfw32 -lz
 }
 
+# ffmpeg (and libavutil: https://github.com/ffms/ffms2/issues/11)
+QMAKE_CXXFLAGS += -D__STDC_CONSTANT_MACROS
+
 QMAKE_CXXFLAGS *= -Wall
 
 SOURCES = VOIPPlugin.cpp               \
diff --git a/plugins/VOIP/VOIPPlugin.cpp b/plugins/VOIP/VOIPPlugin.cpp
index 08a2dbac3..f914aa81b 100644
--- a/plugins/VOIP/VOIPPlugin.cpp
+++ b/plugins/VOIP/VOIPPlugin.cpp
@@ -98,6 +98,8 @@ VOIPPlugin::VOIPPlugin()
 
 	Q_INIT_RESOURCE(VOIP_images);
 	Q_INIT_RESOURCE(VOIP_qss);
+
+	avcodec_register_all();
 }
 
 void VOIPPlugin::setInterfaces(RsPlugInInterfaces &interfaces)