diff --git a/doc/APIchanges b/doc/APIchanges
index a491d1d24c..a561c01d0f 100644
--- a/doc/APIchanges
+++ b/doc/APIchanges
@@ -13,6 +13,9 @@ libavutil:     2012-10-22
 
 API changes, most recent first:
 
+2013-04-xx - xxxxxxx - lavc 55.4.0 - avcodec.h
+  Add field_order to AVCodecParserContext.
+
 2013-03-xx - xxxxxxx - lavc 55.2.0 - avcodec.h
   Add CODEC_FLAG_UNALIGNED to allow decoders to produce unaligned output.
 
diff --git a/libavcodec/avcodec.h b/libavcodec/avcodec.h
index c265d87fe6..968f9e557a 100644
--- a/libavcodec/avcodec.h
+++ b/libavcodec/avcodec.h
@@ -3537,6 +3537,8 @@ typedef struct AVCodecParserContext {
      * For all other types, this is in units of AVCodecContext.time_base.
      */
     int duration;
+
+    enum AVFieldOrder field_order;
 } AVCodecParserContext;
 
 typedef struct AVCodecParser {
diff --git a/libavcodec/version.h b/libavcodec/version.h
index 2165a3d061..2dc0f4d89d 100644
--- a/libavcodec/version.h
+++ b/libavcodec/version.h
@@ -27,7 +27,7 @@
  */
 
 #define LIBAVCODEC_VERSION_MAJOR 55
-#define LIBAVCODEC_VERSION_MINOR  3
+#define LIBAVCODEC_VERSION_MINOR  4
 #define LIBAVCODEC_VERSION_MICRO  0
 
 #define LIBAVCODEC_VERSION_INT  AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \