diff --git a/libavformat/avformat.h b/libavformat/avformat.h
index 2f41f7263b..c77cbbbda0 100644
--- a/libavformat/avformat.h
+++ b/libavformat/avformat.h
@@ -285,10 +285,9 @@ typedef struct AVOutputFormat {
      * AVFMT_NODIMENSIONS, AVFMT_NOSTREAMS
      */
     int flags;
-    /**
-     * Currently only used to set pixel format if not YUV420P.
-     */
-    int (*set_parameters)(struct AVFormatContext *, AVFormatParameters *);
+
+    void *dummy;
+
     int (*interleave_packet)(struct AVFormatContext *, AVPacket *out,
                              AVPacket *in, int flush);
 
diff --git a/libavformat/utils.c b/libavformat/utils.c
index e7ce9110ab..501a411599 100644
--- a/libavformat/utils.c
+++ b/libavformat/utils.c
@@ -2716,11 +2716,6 @@ int av_set_parameters(AVFormatContext *s, AVFormatParameters *ap)
     } else
         s->priv_data = NULL;
 
-    if (s->oformat->set_parameters) {
-        ret = s->oformat->set_parameters(s, ap);
-        if (ret < 0)
-            return ret;
-    }
     return 0;
 }