diff -up xvidcore/src/xvid.c.r xvidcore/src/xvid.c
--- xvidcore/src/xvid.c.r	2008-11-30 17:38:31.000000000 +0100
+++ xvidcore/src/xvid.c	2008-12-03 00:47:15.000000000 +0100
@@ -27,6 +27,9 @@
 #include <stdlib.h>
 #include <string.h>
 #include <time.h>
+#ifndef _WIN32
+#include <unistd.h>
+#endif
 
 #include "xvid.h"
 #include "decoder.h"
@@ -675,7 +678,6 @@ xvid_gbl_info(xvid_gbl_info_t * info)
 
 #else
 
-  #include <unistd.h>
   info->num_threads = sysconf(_SC_NPROCESSORS_CONF);	
 
 #endif