diff --git a/doc/APIchanges b/doc/APIchanges
index 55b634d21d3823a6ed671add9c04d510dce0af99..fd0abf5414eefb3a4426659090b64668d209f407 100644
--- a/doc/APIchanges
+++ b/doc/APIchanges
@@ -15,6 +15,9 @@ libavutil:     2011-04-18
 
 API changes, most recent first:
 
+2012-08-13 - xxxxxxx - lavu 51.69.100 - opt.h
+  Add AV_OPT_FLAG_FILTERING_PARAM symbol in opt.h.
+
 2012-07-31 - xxxxxxx - lavc 54.46.100
   Add channels field to AVFrame.
 
diff --git a/libavutil/opt.c b/libavutil/opt.c
index 02869e44c7b6624e092ef3a7d0ee8c5216e1eeda..0adbdddace76707ea058b7ea9e7f65f512b926df 100644
--- a/libavutil/opt.c
+++ b/libavutil/opt.c
@@ -634,6 +634,7 @@ static void opt_list(void *obj, void *av_log_obj, const char *unit,
         }
         av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_ENCODING_PARAM) ? 'E' : '.');
         av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_DECODING_PARAM) ? 'D' : '.');
+        av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_FILTERING_PARAM)? 'F' : '.');
         av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_VIDEO_PARAM   ) ? 'V' : '.');
         av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_AUDIO_PARAM   ) ? 'A' : '.');
         av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_SUBTITLE_PARAM) ? 'S' : '.');
diff --git a/libavutil/opt.h b/libavutil/opt.h
index b947814768096945fe4903ac855bd874263b04f6..3bf30a582d05ad60620c2aadfb59833edb73c787 100644
--- a/libavutil/opt.h
+++ b/libavutil/opt.h
@@ -279,6 +279,7 @@ typedef struct AVOption {
 #define AV_OPT_FLAG_AUDIO_PARAM     8
 #define AV_OPT_FLAG_VIDEO_PARAM     16
 #define AV_OPT_FLAG_SUBTITLE_PARAM  32
+#define AV_OPT_FLAG_FILTERING_PARAM (1<<16) ///< a generic parameter which can be set by the user for filtering
 //FIXME think about enc-audio, ... style flags
 
     /**
diff --git a/libavutil/version.h b/libavutil/version.h
index 6b3e4860e10c0928d79d2369da08f6e70fd148ce..0e381b75ae20a1d0504bfdb0d954bed539312b96 100644
--- a/libavutil/version.h
+++ b/libavutil/version.h
@@ -39,7 +39,7 @@
  */
 
 #define LIBAVUTIL_VERSION_MAJOR 51
-#define LIBAVUTIL_VERSION_MINOR 68
+#define LIBAVUTIL_VERSION_MINOR 69
 #define LIBAVUTIL_VERSION_MICRO 100
 
 #define LIBAVUTIL_VERSION_INT   AV_VERSION_INT(LIBAVUTIL_VERSION_MAJOR, \