diff --git a/data/locale/en-US.ini b/data/locale/en-US.ini
index 568beab..7799bad 100644
--- a/data/locale/en-US.ini
+++ b/data/locale/en-US.ini
@@ -26,11 +26,18 @@ FFmpeg.StandardCompliance.Experimental="Experimental"
 # Rate Control
 RateControl="Rate Control"
 RateControl.Method="Method"
-RateControl.Method.CBR="Constant Bitrate"
-RateControl.Method.ABR="Average Bitrate"
-RateControl.Method.VBR="Variable Bitrate"
-RateControl.Method.CQP="Constant Quantization Parameter"
-RateControl.Method.CRF="Constant Rate Factor"
+RateControl.Method.ConstantBitrate="Constant Bitrate (CBR)"
+RateControl.Method.AverageBitrate="Average Bitrate (ABR)"
+RateControl.Method.VariableBitrate="Variable Bitrate (VBR)"
+RateControl.Method.ConstantQuantizationParameter="Constant Quantization Parameter (CQP)"
+RateControl.Method.ConstantRateFactor="Constant Rate Factor (CRF)"
+RateControl.Method.ConstantQuality="Constant Quality (CQ)"
+RateControl.Method.VariableQuality="Variable Quality (VQ)"
+RateControl.Method.Lossless="Lossless (LL)"
+RateControl.Bitrate.Target="Target Bitrate (kbit/s)"
+RateControl.Bitrate.Minimum="Minimum Bitrate (kbit/s)"
+RateControl.Bitrate.Maximum="Maximum Bitrate (kbit/s)"
+RateControl.BufferSize="Buffer Size (kbit/s)"
 
 # Apple ProRes
 AppleProRes.Profile="Profile"
diff --git a/source/strings.hpp b/source/strings.hpp
index 9236935..a7afd3d 100644
--- a/source/strings.hpp
+++ b/source/strings.hpp
@@ -21,3 +21,7 @@
 #define P_RATECONTROL "RateControl"
 #define P_RATECONTROL_METHOD "RateControl.Method"
 #define P_RATECONTROL_METHOD_(x) "RateControl.Method." D_VSTR(x)
+#define P_RATECONTROL_BITRATE_TARGET "RateControl.Bitrate.Target"
+#define P_RATECONTROL_BITRATE_MINIMUM "RateControl.Bitrate.Minimum"
+#define P_RATECONTROL_BITRATE_MAXIMUM "RateControl.Bitrate.Maximum"
+#define P_RATECONTROL_BUFFERSIZE "RateControl.BufferSize"