diff --git a/avserver.c b/avserver.c
index 6b01b15b6f..994edcd04c 100644
--- a/avserver.c
+++ b/avserver.c
@@ -39,6 +39,7 @@
 #include "libavutil/avstring.h"
 #include "libavutil/lfg.h"
 #include "libavutil/dict.h"
+#include "libavutil/intreadwrite.h"
 #include "libavutil/mathematics.h"
 #include "libavutil/random_seed.h"
 #include "libavutil/parseutils.h"
@@ -323,6 +324,37 @@ static AVLFG random_state;
 
 static FILE *logfile = NULL;
 
+static int64_t ffm_read_write_index(int fd)
+{
+    uint8_t buf[8];
+
+    lseek(fd, 8, SEEK_SET);
+    if (read(fd, buf, 8) != 8)
+        return AVERROR(EIO);
+    return AV_RB64(buf);
+}
+
+static int ffm_write_write_index(int fd, int64_t pos)
+{
+    uint8_t buf[8];
+    int i;
+
+    for(i=0;i<8;i++)
+        buf[i] = (pos >> (56 - i * 8)) & 0xff;
+    lseek(fd, 8, SEEK_SET);
+    if (write(fd, buf, 8) != 8)
+        return AVERROR(EIO);
+    return 8;
+}
+
+static void ffm_set_write_index(AVFormatContext *s, int64_t pos,
+                                int64_t file_size)
+{
+    FFMContext *ffm = s->priv_data;
+    ffm->write_index = pos;
+    ffm->file_size = file_size;
+}
+
 /* FIXME: make avserver work with IPv6 */
 /* resolve host with also IP address parsing */
 static int resolve_host(struct in_addr *sin_addr, const char *hostname)
diff --git a/libavformat/ffm.h b/libavformat/ffm.h
index 6ce5e0408c..70c3e887a0 100644
--- a/libavformat/ffm.h
+++ b/libavformat/ffm.h
@@ -56,8 +56,4 @@ typedef struct FFMContext {
     uint8_t packet[FFM_PACKET_SIZE];
 } FFMContext;
 
-int64_t ffm_read_write_index(int fd);
-int ffm_write_write_index(int fd, int64_t pos);
-void ffm_set_write_index(AVFormatContext *s, int64_t pos, int64_t file_size);
-
 #endif /* AVFORMAT_FFM_H */
diff --git a/libavformat/ffmdec.c b/libavformat/ffmdec.c
index 50c7416811..e6730eb2f5 100644
--- a/libavformat/ffmdec.c
+++ b/libavformat/ffmdec.c
@@ -24,39 +24,6 @@
 #include "avformat.h"
 #include "internal.h"
 #include "ffm.h"
-#if CONFIG_AVSERVER
-#include <unistd.h>
-
-int64_t ffm_read_write_index(int fd)
-{
-    uint8_t buf[8];
-
-    lseek(fd, 8, SEEK_SET);
-    if (read(fd, buf, 8) != 8)
-        return AVERROR(EIO);
-    return AV_RB64(buf);
-}
-
-int ffm_write_write_index(int fd, int64_t pos)
-{
-    uint8_t buf[8];
-    int i;
-
-    for(i=0;i<8;i++)
-        buf[i] = (pos >> (56 - i * 8)) & 0xff;
-    lseek(fd, 8, SEEK_SET);
-    if (write(fd, buf, 8) != 8)
-        return AVERROR(EIO);
-    return 8;
-}
-
-void ffm_set_write_index(AVFormatContext *s, int64_t pos, int64_t file_size)
-{
-    FFMContext *ffm = s->priv_data;
-    ffm->write_index = pos;
-    ffm->file_size = file_size;
-}
-#endif // CONFIG_AVSERVER
 
 static int ffm_is_avail_data(AVFormatContext *s, int size)
 {