diff --git a/libavformat/rtmpproto.c b/libavformat/rtmpproto.c
index 13ef719ab2..427655c27e 100644
--- a/libavformat/rtmpproto.c
+++ b/libavformat/rtmpproto.c
@@ -372,6 +372,25 @@ static void gen_server_bw(URLContext *s, RTMPContext *rt)
     ff_rtmp_packet_destroy(&pkt);
 }
 
+/**
+ * Generate check bandwidth message and send it to the server.
+ */
+static void gen_check_bw(URLContext *s, RTMPContext *rt)
+{
+    RTMPPacket pkt;
+    uint8_t *p;
+
+    ff_rtmp_packet_create(&pkt, RTMP_SYSTEM_CHANNEL, RTMP_PT_INVOKE, 0, 21);
+
+    p = pkt.data;
+    ff_amf_write_string(&p, "_checkbw");
+    ff_amf_write_number(&p, ++rt->nb_invokes);
+    ff_amf_write_null(&p);
+
+    ff_rtmp_packet_write(rt->stream, &pkt, rt->chunk_size, rt->prev_pkt[1]);
+    ff_rtmp_packet_destroy(&pkt);
+}
+
 /**
  * Generate report on bytes read so far and send it to the server.
  */
@@ -691,6 +710,8 @@ static int rtmp_parse_result(URLContext *s, RTMPContext *rt, RTMPPacket *pkt)
             if (!t && !strcmp(tmpstr, "NetStream.Play.Stop")) rt->state = STATE_STOPPED;
             if (!t && !strcmp(tmpstr, "NetStream.Play.UnpublishNotify")) rt->state = STATE_STOPPED;
             if (!t && !strcmp(tmpstr, "NetStream.Publish.Start")) rt->state = STATE_PUBLISHING;
+        } else if (!memcmp(pkt->data, "\002\000\010onBWDone", 11)) {
+            gen_check_bw(s, rt);
         }
         break;
     }