double rfValue = 51.0 - slider_videoQuality.Value * cqStep;\r
rfValue = Math.Round(rfValue, 2);\r
lbl_SliderValue.Text = "RF:" + rfValue.ToString(new CultureInfo("en-US"));\r
+ this.lbl_rfwarn.Visible = rfValue == 0;\r
break;\r
case "VP3 (Theora)":\r
lbl_SliderValue.Text = "QP:" + slider_videoQuality.Value;\r