Index: /OpenSceneGraph/trunk/src/osgPlugins/ffmpeg/FFmpegDecoderVideo.cpp
===================================================================
--- /OpenSceneGraph/trunk/src/osgPlugins/ffmpeg/FFmpegDecoderVideo.cpp (revision 9826)
+++ /OpenSceneGraph/trunk/src/osgPlugins/ffmpeg/FFmpegDecoderVideo.cpp (revision 9837)
@@ -6,5 +6,10 @@
 #include <string.h>
 
-
+extern "C" 
+{
+    int img_convert(AVPicture *dst, int dst_pix_fmt, const AVPicture *src,
+                int src_pix_fmt, int src_width, int src_height);
+
+};
 
 namespace osgFFmpeg {