diff --git a/libavcodec/dct-test.c b/libavcodec/dct-test.c
index d57789395f..4647642080 100644
--- a/libavcodec/dct-test.c
+++ b/libavcodec/dct-test.c
@@ -28,13 +28,13 @@
 #include <stdlib.h>
 #include <stdio.h>
 #include <string.h>
-#include <sys/time.h>
 #include <unistd.h>
 #include <math.h>
 
 #include "libavutil/cpu.h"
 #include "libavutil/common.h"
 #include "libavutil/lfg.h"
+#include "libavutil/time.h"
 
 #include "simple_idct.h"
 #include "aandcttab.h"
@@ -143,13 +143,6 @@ static const struct algo idct_tab[] = {
 
 #define AANSCALE_BITS 12
 
-static int64_t gettime(void)
-{
-    struct timeval tv;
-    gettimeofday(&tv, NULL);
-    return (int64_t)tv.tv_sec * 1000000 + tv.tv_usec;
-}
-
 #define NB_ITS 20000
 #define NB_ITS_SPEED 50000
 
@@ -312,7 +305,7 @@ static int dct_error(const struct algo *dct, int test, int is_idct, int speed)
     init_block(block, test, is_idct, &prng);
     permute(block1, block, dct->format);
 
-    ti = gettime();
+    ti = av_gettime();
     it1 = 0;
     do {
         for (it = 0; it < NB_ITS_SPEED; it++) {
@@ -320,7 +313,7 @@ static int dct_error(const struct algo *dct, int test, int is_idct, int speed)
             dct->func(block);
         }
         it1 += NB_ITS_SPEED;
-        ti1 = gettime() - ti;
+        ti1 = av_gettime() - ti;
     } while (ti1 < 1000000);
     emms_c();
 
@@ -453,7 +446,7 @@ static void idct248_error(const char *name,
     if (!speed)
         return;
 
-    ti = gettime();
+    ti = av_gettime();
     it1 = 0;
     do {
         for (it = 0; it < NB_ITS_SPEED; it++) {
@@ -462,7 +455,7 @@ static void idct248_error(const char *name,
             idct248_put(img_dest, 8, block);
         }
         it1 += NB_ITS_SPEED;
-        ti1 = gettime() - ti;
+        ti1 = av_gettime() - ti;
     } while (ti1 < 1000000);
     emms_c();
 
diff --git a/libavcodec/fft-test.c b/libavcodec/fft-test.c
index 70c0655ad0..75941a1071 100644
--- a/libavcodec/fft-test.c
+++ b/libavcodec/fft-test.c
@@ -27,6 +27,7 @@
 #include "libavutil/mathematics.h"
 #include "libavutil/lfg.h"
 #include "libavutil/log.h"
+#include "libavutil/time.h"
 #include "fft.h"
 #if CONFIG_FFT_FLOAT
 #include "dct.h"
@@ -34,7 +35,6 @@
 #endif
 #include <math.h>
 #include <unistd.h>
-#include <sys/time.h>
 #include <stdlib.h>
 #include <string.h>
 
@@ -186,13 +186,6 @@ static FFTSample frandom(AVLFG *prng)
     return (int16_t)av_lfg_get(prng) / 32768.0 * RANGE;
 }
 
-static int64_t gettime(void)
-{
-    struct timeval tv;
-    gettimeofday(&tv,NULL);
-    return (int64_t)tv.tv_sec * 1000000 + tv.tv_usec;
-}
-
 static int check_diff(FFTSample *tab1, FFTSample *tab2, int n, double scale)
 {
     int i;
@@ -430,7 +423,7 @@ int main(int argc, char **argv)
         /* we measure during about 1 seconds */
         nb_its = 1;
         for(;;) {
-            time_start = gettime();
+            time_start = av_gettime();
             for (it = 0; it < nb_its; it++) {
                 switch (transform) {
                 case TRANSFORM_MDCT:
@@ -456,7 +449,7 @@ int main(int argc, char **argv)
 #endif
                 }
             }
-            duration = gettime() - time_start;
+            duration = av_gettime() - time_start;
             if (duration >= 1000000)
                 break;
             nb_its *= 2;
diff --git a/libavcodec/motion-test.c b/libavcodec/motion-test.c
index fb97f085be..bf63182db1 100644
--- a/libavcodec/motion-test.c
+++ b/libavcodec/motion-test.c
@@ -32,6 +32,7 @@
 #include "config.h"
 #include "dsputil.h"
 #include "libavutil/lfg.h"
+#include "libavutil/time.h"
 
 #undef printf
 
@@ -58,13 +59,6 @@ static void help(void)
            "test motion implementations\n");
 }
 
-static int64_t gettime(void)
-{
-    struct timeval tv;
-    gettimeofday(&tv,NULL);
-    return (int64_t)tv.tv_sec * 1000000 + tv.tv_usec;
-}
-
 #define NB_ITS 500
 
 int dummy;
@@ -97,7 +91,7 @@ static void test_motion(const char *name,
     emms_c();
 
     /* speed test */
-    ti = gettime();
+    ti = av_gettime();
     d1 = 0;
     for(it=0;it<NB_ITS;it++) {
         for(y=0;y<HEIGHT-17;y++) {
@@ -109,7 +103,7 @@ static void test_motion(const char *name,
     }
     emms_c();
     dummy = d1; /* avoid optimization */
-    ti = gettime() - ti;
+    ti = av_gettime() - ti;
 
     printf("  %0.0f kop/s\n",
            (double)NB_ITS * (WIDTH - 16) * (HEIGHT - 16) /
diff --git a/libavutil/des.c b/libavutil/des.c
index d65760e575..c7c6f1dbee 100644
--- a/libavutil/des.c
+++ b/libavutil/des.c
@@ -342,7 +342,7 @@ void av_des_mac(AVDES *d, uint8_t *dst, const uint8_t *src, int count) {
 #undef srand
 #include <stdlib.h>
 #include <stdio.h>
-#include <sys/time.h>
+#include "libavutil/time.h"
 static uint64_t rand64(void) {
     uint64_t r = rand();
     r = (r << 32) | rand();
@@ -389,13 +389,11 @@ int main(void) {
 #ifdef GENTABLES
     int j;
 #endif
-    struct timeval tv;
     uint64_t key[3];
     uint64_t data;
     uint64_t ct;
     uint64_t roundkeys[16];
-    gettimeofday(&tv, NULL);
-    srand(tv.tv_sec * 1000 * 1000 + tv.tv_usec);
+    srand(av_gettime());
     key[0] = AV_RB64(test_key);
     data = AV_RB64(plain);
     gen_roundkeys(roundkeys, key[0]);