diff --git a/format/rtspv2/client.go b/format/rtspv2/client.go
index 397f1e7..d6d4816 100644
--- a/format/rtspv2/client.go
+++ b/format/rtspv2/client.go
@@ -247,6 +247,146 @@ func Dial(options RTSPClientOptions) (*RTSPClient, error) {
 	return client, nil
 }
 
+func ReplayDial(options RTSPClientOptions, startTime string) (*RTSPClient, error) {
+	client := &RTSPClient{
+		headers:             make(map[string]string),
+		Signals:             make(chan int, 100),
+		OutgoingProxyQueue:  make(chan *[]byte, 3000),
+		OutgoingPacketQueue: make(chan *av.Packet, 3000),
+		BufferRtpPacket:     bytes.NewBuffer([]byte{}),
+		videoID:             -1,
+		audioID:             -2,
+		videoIDX:            -1,
+		audioIDX:            -2,
+		options:             options,
+		AudioTimeScale:      8000,
+	}
+	client.headers["User-Agent"] = "Lavf58.76.100"
+	err := client.parseURL(html.UnescapeString(client.options.URL))
+	if err != nil {
+		return nil, err
+	}
+	conn, err := net.DialTimeout("tcp", client.pURL.Host, client.options.DialTimeout)
+	if err != nil {
+		return nil, err
+	}
+	err = conn.SetDeadline(time.Now().Add(client.options.ReadWriteTimeout))
+	if err != nil {
+		return nil, err
+	}
+	if client.pURL.Scheme == "rtsps" {
+		tlsConn := tls.Client(conn, &tls.Config{InsecureSkipVerify: options.InsecureSkipVerify, ServerName: client.pURL.Hostname()})
+		err = tlsConn.Handshake()
+		if err != nil {
+			return nil, err
+		}
+		conn = tlsConn
+	}
+	client.conn = conn
+	client.connRW = bufio.NewReadWriter(bufio.NewReader(conn), bufio.NewWriter(conn))
+	err = client.request(OPTIONS, nil, client.pURL.String(), false, false)
+	if err != nil {
+		return nil, err
+	}
+	err = client.request(DESCRIBE, map[string]string{"Accept": "application/sdp"}, client.pURL.String(), false, false)
+	if err != nil {
+		return nil, err
+	}
+	for _, i2 := range client.mediaSDP {
+		if (i2.AVType != VIDEO && i2.AVType != AUDIO) || (client.options.DisableAudio && i2.AVType == AUDIO) {
+			//TODO check it
+			if strings.Contains(string(client.SDPRaw), "LaunchDigital") {
+				client.chTMP += 2
+			}
+			continue
+		}
+		// err = client.request(SETUP, map[string]string{"Require": "onvif-replay", "Transport": "RTP/UDP"}, client.ControlTrack(i2.Control), false, false)
+		err = client.request(SETUP, map[string]string{"Require": "onvif-replay", "Transport": "RTP/AVP/TCP;unicast;interleaved=" + strconv.Itoa(client.chTMP) + "-" + strconv.Itoa(client.chTMP+1)}, client.ControlTrack(i2.Control), false, false)
+		if err != nil {
+			return nil, err
+		}
+		if i2.AVType == VIDEO {
+			if i2.Type == av.H264 {
+				if len(i2.SpropParameterSets) > 1 {
+					if codecData, err := h264parser.NewCodecDataFromSPSAndPPS(i2.SpropParameterSets[0], i2.SpropParameterSets[1]); err == nil {
+						client.sps = i2.SpropParameterSets[0]
+						client.pps = i2.SpropParameterSets[1]
+						client.CodecData = append(client.CodecData, codecData)
+					}
+				} else {
+					client.CodecData = append(client.CodecData, h264parser.CodecData{})
+					client.WaitCodec = true
+				}
+				client.FPS = i2.FPS
+				client.videoCodec = av.H264
+			} else if i2.Type == av.H265 {
+				if len(i2.SpropVPS) > 1 && len(i2.SpropSPS) > 1 && len(i2.SpropPPS) > 1 {
+					if codecData, err := h265parser.NewCodecDataFromVPSAndSPSAndPPS(i2.SpropVPS, i2.SpropSPS, i2.SpropPPS); err == nil {
+						client.vps = i2.SpropVPS
+						client.sps = i2.SpropSPS
+						client.pps = i2.SpropPPS
+						client.CodecData = append(client.CodecData, codecData)
+					}
+				} else {
+					client.CodecData = append(client.CodecData, h265parser.CodecData{})
+				}
+				client.videoCodec = av.H265
+
+			} else {
+				client.Println("SDP Video Codec Type Not Supported", i2.Type)
+			}
+			client.videoIDX = int8(len(client.CodecData) - 1)
+			client.videoID = client.chTMP
+		}
+		if i2.AVType == AUDIO {
+			client.audioID = client.chTMP
+			var CodecData av.AudioCodecData
+			switch i2.Type {
+			case av.AAC:
+				CodecData, err = aacparser.NewCodecDataFromMPEG4AudioConfigBytes(i2.Config)
+				if err == nil {
+					client.Println("Audio AAC bad config")
+				}
+			case av.OPUS:
+				var cl av.ChannelLayout
+				switch i2.ChannelCount {
+				case 1:
+					cl = av.CH_MONO
+				case 2:
+					cl = av.CH_STEREO
+				default:
+					cl = av.CH_MONO
+				}
+				CodecData = codec.NewOpusCodecData(i2.TimeScale, cl)
+			case av.PCM_MULAW:
+				CodecData = codec.NewPCMMulawCodecData()
+			case av.PCM_ALAW:
+				CodecData = codec.NewPCMAlawCodecData()
+			case av.PCM:
+				CodecData = codec.NewPCMCodecData()
+			default:
+				client.Println("Audio Codec", i2.Type, "not supported")
+			}
+			if CodecData != nil {
+				client.CodecData = append(client.CodecData, CodecData)
+				client.audioIDX = int8(len(client.CodecData) - 1)
+				client.audioCodec = CodecData.Type()
+				if i2.TimeScale != 0 {
+					client.AudioTimeScale = int64(i2.TimeScale)
+				}
+			}
+		}
+		client.chTMP += 2
+	}
+	test := map[string]string{"Require": "onvif-replay", "Scale": "1.000000", "Speed": "1.000000", "Range": "clock=" + startTime + "-"}
+	err = client.request(PLAY, test, client.control, false, false)
+	if err != nil {
+		return nil, err
+	}
+	go client.startStream()
+	return client, nil
+}
+
 func (client *RTSPClient) ControlTrack(track string) string {
 	if strings.Contains(track, "rtsp://") {
 		return track