diff --git a/libavformat/rtmpproto.c b/libavformat/rtmpproto.c
index 1207519219..e7d29aa3c7 100644
--- a/libavformat/rtmpproto.c
+++ b/libavformat/rtmpproto.c
@@ -2226,6 +2226,11 @@ static int handle_metadata(RTMPContext *rt, RTMPPacket *pkt)
         next += size + 3 + 4;
         p    += size + 3 + 4;
     }
+    if (p != rt->flv_data + rt->flv_size) {
+        av_log(NULL, AV_LOG_WARNING, "Incomplete flv packets in "
+                                     "RTMP_PT_METADATA packet\n");
+        rt->flv_size = p - rt->flv_data;
+    }
 
     return 0;
 }