--- modules/access/v4l2/v4l2.h.orig	2013-10-22 10:17:30.534986266 -0200
+++ modules/access/v4l2/v4l2.h	2013-10-22 10:17:39.613985219 -0200
@@ -20,6 +20,12 @@
 
 #include <linux/videodev2.h>
 
+#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
+#define V4L2_BUF_FLAG_TIMESTAMP_MASK		0xe000
+#define V4L2_BUF_FLAG_TIMESTAMP_UNKNOWN		0x0000
+#define V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC	0x2000
+#endif
+
 /* libv4l2 functions */
 extern int v4l2_fd_open (int, int);
 extern int (*v4l2_close) (int);