diff --git a/format/rtspv2/client.go b/format/rtspv2/client.go
index d6d4816..afb2248 100644
--- a/format/rtspv2/client.go
+++ b/format/rtspv2/client.go
@@ -387,6 +387,39 @@ func ReplayDial(options RTSPClientOptions, startTime string) (*RTSPClient, error
 	return client, nil
 }
 
+func (client *RTSPClient) SeekTime(startTime string, scale float64, endTime string) error {
+	// Prepare new PLAY request headers
+	scaleStr := fmt.Sprintf("%.6f", scale)
+	headers := map[string]string{
+		"Require": "onvif-replay",
+		"Scale":   scaleStr,
+		"Range": "clock=" + startTime + "-" + endTime}
+	// Send the PLAY request with the new scale
+	err := client.request(PLAY, headers, client.control, false, true)
+	if err != nil {
+		client.Println("Failed to Change SEEKTIME", err)
+		return fmt.Errorf("failed to change speed: %w", err)
+	}
+	return nil
+}
+
+func (client *RTSPClient) ChangeSpeed(scale float64) error {
+	// Convert scale to string format
+	scaleStr := fmt.Sprintf("%.6f", scale)
+	// Prepare new PLAY request headers
+	headers := map[string]string{
+		"Require": "onvif-replay",
+		"Scale":   scaleStr,
+		"Speed":   "1.000000"}
+	// Send the PLAY request with the new scale
+	err := client.request(PLAY, headers, client.control, false, true)
+	if err != nil {
+		return fmt.Errorf("failed to change speed: %w", err)
+	}
+	client.Println("Speed changed to scale:", scale)
+	return nil
+}
+
 func (client *RTSPClient) ControlTrack(track string) string {
 	if strings.Contains(track, "rtsp://") {
 		return track