diff --git a/rtmp/chunk.go b/rtmp/chunk.go
index 5aa483a..98fb87a 100644
--- a/rtmp/chunk.go
+++ b/rtmp/chunk.go
@@ -265,7 +265,18 @@ func ReadChunk(conn net.Conn, open_chnkstrms map[uint32]*ChunkStream, open_msgs
 		}
 	case 3:
 		chnkstream_ptr = open_chnkstrms[csid]
-		msg_ptr = open_msgs[chnkstream_ptr.last_msg_strm_id]
+		msg_prev, ok := open_msgs[chnkstream_ptr.last_msg_strm_id]
+		if !ok {
+			msg_ptr = new(Message)
+			msg_ptr.msg_type = chnkstream_ptr.last_msg_type
+			msg_ptr.msg_len = chnkstream_ptr.last_msg_len
+			msg_ptr.data = make([]byte, msg_ptr.msg_len)
+
+			chnkstream_ptr.timestamp += chnkstream_ptr.timedelta
+			msg_ptr.timestamp = chnkstream_ptr.timestamp
+		} else {
+			msg_ptr = msg_prev
+		}
 	}
 
 	n, err := read_chunk_data(conn, msg_ptr, chnk_size)