diff --git a/doc/APIchanges b/doc/APIchanges
index 206796e14cd1830c1e2e87bd6573ba62408b9afc..1ec6fbc189a413fc5af321e34684a184642e4d36 100644
--- a/doc/APIchanges
+++ b/doc/APIchanges
@@ -12,6 +12,10 @@ libavutil:     2015-08-28
 
 
 API changes, most recent first:
+
+2015-11-xx - xxxxxxx - lavf 57.1.0 - avformat.h
+  Add av_stream_new_side_data().
+
 2015-11-xx - xxxxxxx - lavu 55.3.0 - xtea.h
     Add av_xtea_le_init and av_xtea_le_crypt
 
diff --git a/libavformat/avformat.h b/libavformat/avformat.h
index 57fcbf568baf3fa9b7618156d7c1751f6d5608dc..cd53420215fbedbafa2b1ffe4f423c1aff1c3590 100644
--- a/libavformat/avformat.h
+++ b/libavformat/avformat.h
@@ -1343,6 +1343,16 @@ const AVClass *avformat_get_class(void);
  */
 AVStream *avformat_new_stream(AVFormatContext *s, const AVCodec *c);
 
+/**
+ * Allocate new information from stream.
+ *
+ * @param stream stream
+ * @param type desired side information type
+ * @param size side information size
+ * @return pointer to fresh allocated data or NULL otherwise
+ */
+uint8_t *av_stream_new_side_data(AVStream *stream,
+                                 enum AVPacketSideDataType type, int size);
 /**
  * Get side information from stream.
  *
diff --git a/libavformat/internal.h b/libavformat/internal.h
index 7bbf7755cf04ad373af1e69df311a54473f1b9f1..17c45f6dab99f182104db7657b6fa6e3a50dc237 100644
--- a/libavformat/internal.h
+++ b/libavformat/internal.h
@@ -419,11 +419,4 @@ static inline int ff_rename(const char *oldpath, const char *newpath)
     return 0;
 }
 
-/**
- * Add new side data to a stream. If a side data of this type already exists, it
- * is replaced.
- */
-uint8_t *ff_stream_new_side_data(AVStream *st, enum AVPacketSideDataType type,
-                                 int size);
-
 #endif /* AVFORMAT_INTERNAL_H */
diff --git a/libavformat/mov.c b/libavformat/mov.c
index c7495772febeb7f501b7435817cee149de851824..aaf1c2db9a1909dd7f1d73fae84d455891a3122b 100644
--- a/libavformat/mov.c
+++ b/libavformat/mov.c
@@ -684,7 +684,7 @@ static int mov_read_dac3(MOVContext *c, AVIOContext *pb, MOVAtom atom)
         return 0;
     st = c->fc->streams[c->fc->nb_streams-1];
 
-    ast = (enum AVAudioServiceType*)ff_stream_new_side_data(st, AV_PKT_DATA_AUDIO_SERVICE_TYPE,
+    ast = (enum AVAudioServiceType*)av_stream_new_side_data(st, AV_PKT_DATA_AUDIO_SERVICE_TYPE,
                                                             sizeof(*ast));
     if (!ast)
         return AVERROR(ENOMEM);
@@ -716,7 +716,7 @@ static int mov_read_dec3(MOVContext *c, AVIOContext *pb, MOVAtom atom)
         return 0;
     st = c->fc->streams[c->fc->nb_streams-1];
 
-    ast = (enum AVAudioServiceType*)ff_stream_new_side_data(st, AV_PKT_DATA_AUDIO_SERVICE_TYPE,
+    ast = (enum AVAudioServiceType*)av_stream_new_side_data(st, AV_PKT_DATA_AUDIO_SERVICE_TYPE,
                                                             sizeof(*ast));
     if (!ast)
         return AVERROR(ENOMEM);
diff --git a/libavformat/replaygain.c b/libavformat/replaygain.c
index 98e7aad81bc7c293426e342b9ac741af74c3b69a..3188b1503b28ef3cc1471bd7e94c4cb8890f6841 100644
--- a/libavformat/replaygain.c
+++ b/libavformat/replaygain.c
@@ -75,7 +75,7 @@ int ff_replaygain_export_raw(AVStream *st, int32_t tg, uint32_t tp,
     if (tg == INT32_MIN && ag == INT32_MIN)
         return 0;
 
-    replaygain = (AVReplayGain*)ff_stream_new_side_data(st, AV_PKT_DATA_REPLAYGAIN,
+    replaygain = (AVReplayGain*)av_stream_new_side_data(st, AV_PKT_DATA_REPLAYGAIN,
                                                         sizeof(*replaygain));
     if (!replaygain)
         return AVERROR(ENOMEM);
diff --git a/libavformat/utils.c b/libavformat/utils.c
index bb17b4aedd0b786e1995135bb3abce85b301ae04..18499af8d689a98c7c8f92f8e58ed8f1104f81e9 100644
--- a/libavformat/utils.c
+++ b/libavformat/utils.c
@@ -3140,7 +3140,7 @@ uint8_t *av_stream_get_side_data(AVStream *st, enum AVPacketSideDataType type,
     return NULL;
 }
 
-uint8_t *ff_stream_new_side_data(AVStream *st, enum AVPacketSideDataType type,
+uint8_t *av_stream_new_side_data(AVStream *st, enum AVPacketSideDataType type,
                                  int size)
 {
     AVPacketSideData *sd, *tmp;
diff --git a/libavformat/version.h b/libavformat/version.h
index d004a55ad200d8569c03d29dd538f08519f95f0c..ce367dc6ca0dd4a8472da3300fa23c466f8da3f2 100644
--- a/libavformat/version.h
+++ b/libavformat/version.h
@@ -30,7 +30,7 @@
 #include "libavutil/version.h"
 
 #define LIBAVFORMAT_VERSION_MAJOR 57
-#define LIBAVFORMAT_VERSION_MINOR  0
+#define LIBAVFORMAT_VERSION_MINOR  1
 #define LIBAVFORMAT_VERSION_MICRO  0
 
 #define LIBAVFORMAT_VERSION_INT AV_VERSION_INT(LIBAVFORMAT_VERSION_MAJOR, \