diff -Naur ffmpeg.old/libavformat/os_support.c ffmpeg.new/libavformat/os_support.c
--- ffmpeg.old/libavformat/os_support.c	2008-11-05 14:56:46.000000000 -0600
+++ ffmpeg.new/libavformat/os_support.c	2008-11-05 15:20:45.000000000 -0600
@@ -30,6 +30,10 @@
 #include <sys/time.h>
 #include "os_support.h"
 
+#ifdef __MINGW32__
+#include <sys/timeb.h>
+#endif
+
 #ifdef CONFIG_NETWORK
 #ifndef HAVE_POLL_H
 #ifdef HAVE_WINSOCK2_H
diff -Naur ffmpeg.old/libavformat/os_support.h ffmpeg.new/libavformat/os_support.h
--- ffmpeg.old/libavformat/os_support.h	2008-11-05 14:56:46.000000000 -0600
+++ ffmpeg.new/libavformat/os_support.h	2008-11-05 15:20:33.000000000 -0600
@@ -30,6 +30,7 @@
 #ifdef __MINGW32__
 #  include <fcntl.h>
 #  define lseek(f,p,w) _lseeki64((f), (p), (w))
+#  define usleep(t)    Sleep((t) / 1000)
 #endif
 
 static inline int is_dos_path(const char *path)
diff -Naur ffmpeg.old/libavformat/udp.c ffmpeg.new/libavformat/udp.c
--- ffmpeg.old/libavformat/udp.c	2008-11-05 14:56:46.000000000 -0600
+++ ffmpeg.new/libavformat/udp.c	2008-11-05 15:01:41.000000000 -0600
@@ -402,6 +402,11 @@
     getsockname(udp_fd, (struct sockaddr *)&my_addr, &len);
     s->local_port = udp_port(&my_addr, len);
 
+#ifdef __MINGW32__
+    len = 65536;   /* 64k UDP buffer size.  Should this be bigger? */
+    setsockopt(udp_fd, SOL_SOCKET, SO_RCVBUF, &len, sizeof(len));
+#endif
+
     if (s->is_multicast) {
         if (h->flags & URL_WRONLY) {
             /* output */
diff -Naur ffmpeg.old/libavformat/utils.c ffmpeg.new/libavformat/utils.c
--- ffmpeg.old/libavformat/utils.c	2008-11-05 14:56:47.000000000 -0600
+++ ffmpeg.new/libavformat/utils.c	2008-11-05 15:21:24.000000000 -0600
@@ -35,6 +35,21 @@
  * various utility functions for use within FFmpeg
  */
 
+#ifdef __MINGW32__
+#include <sys/timeb.h>
+
+int gettimeofday(struct timeval *tp, void *tzp)
+{
+    struct _timeb timebuffer;
+
+    _ftime(&timebuffer);
+    tp->tv_sec = timebuffer.time;
+    tp->tv_usec = timebuffer.millitm * 1000;
+
+    return 0;
+}
+#endif
+
 unsigned avformat_version(void)
 {
     return LIBAVFORMAT_VERSION_INT;