ATV modulator: better size text overlay

plugins/channelrx/demodatv/atvdemodplugin.cpp

@@ -26,7 +26,7 @@
 const PluginDescriptor ATVDemodPlugin::m_ptrPluginDescriptor =
 {
 	QString("ATV Demodulator"),
-    QString("3.8.0"),
+    QString("3.8.2"),
     QString("(c) F4HKW for F4EXB / SDRAngel"),
 	QString("https://github.com/f4exb/sdrangel"),
 	true,

plugins/channeltx/modatv/atvmod.cpp

@@ -1037,7 +1037,7 @@ void ATVMod::mixImageAndText(cv::Mat& image)
     int thickness = image.cols / 160;
     int baseline=0;
 
-    fontScale = fontScale < 8.0f ? 8.0f : fontScale; // minimum size
+    fontScale = fontScale < 4.0f ? 4.0f : fontScale; // minimum size
     cv::Size textSize = cv::getTextSize(m_overlayText, fontFace, fontScale, thickness, &baseline);
     baseline += thickness;