diff --git a/data/locale/en-US.ini b/data/locale/en-US.ini
index 7799bad..e2181a7 100644
--- a/data/locale/en-US.ini
+++ b/data/locale/en-US.ini
@@ -1,11 +1,8 @@
-# ProRes
-ProRes.Profile.Proxy="Proxy (PXY)"
-ProRes.Profile.Light="Light (LT)"
-ProRes.Profile.Standard="Standard"
-ProRes.Profile.HighQuality="High Quality (HQ)"
-
 # Generic
-Automatic="Automatic"
+State.Default="Default"
+State.Automatic="Automatic"
+State.Disabled="Disabled"
+State.Enabled="Enabled"
 
 # FFmpeg
 FFmpeg="FFmpeg Options"
@@ -34,10 +31,20 @@ 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)"
+RateControl.Bitrate.Target="Target Bitrate"
+RateControl.Bitrate.Minimum="Minimum Bitrate"
+RateControl.Bitrate.Maximum="Maximum Bitrate"
+RateControl.Quality.Target="Target Quality"
+RateControl.Quality.Minimum="Minimum Quality"
+RateControl.Quality.Maximum="Maximum Quality"
+RateControl.BufferSize="Buffer Size"
+
+# Key Frames
+KeyFrames="Key Frames"
+KeyFrames.IntervalType="Interval Type"
+KeyFrames.IntervalType.Frames="Frames"
+KeyFrames.IntervalType.Seconds="Seconds"
+KeyFrames.Interval="Interval"
 
 # Apple ProRes
 AppleProRes.Profile="Profile"
@@ -46,3 +53,10 @@ AppleProRes.Profile.APCS="LT"
 AppleProRes.Profile.APCN="Standard Definition"
 AppleProRes.Profile.APCH="High Quality"
 AppleProRes.Profile.AP4H="4444"
+
+# ProRes
+ProRes.Profile.Proxy="Proxy (PXY)"
+ProRes.Profile.Light="Light (LT)"
+ProRes.Profile.Standard="Standard"
+ProRes.Profile.HighQuality="High Quality (HQ)"
+
diff --git a/source/strings.hpp b/source/strings.hpp
index a7afd3d..3735715 100644
--- a/source/strings.hpp
+++ b/source/strings.hpp
@@ -18,6 +18,11 @@
 #pragma once
 #include "utility.hpp"
 
+#define P_STATE_DEFAULT "State.Default"
+#define P_STATE_DISABLED "State.Disabled"
+#define P_STATE_ENABLED "State.Enabled"
+#define P_STATE_AUTOMATIC "State.Automatic"
+
 #define P_RATECONTROL "RateControl"
 #define P_RATECONTROL_METHOD "RateControl.Method"
 #define P_RATECONTROL_METHOD_(x) "RateControl.Method." D_VSTR(x)
@@ -25,3 +30,19 @@
 #define P_RATECONTROL_BITRATE_MINIMUM "RateControl.Bitrate.Minimum"
 #define P_RATECONTROL_BITRATE_MAXIMUM "RateControl.Bitrate.Maximum"
 #define P_RATECONTROL_BUFFERSIZE "RateControl.BufferSize"
+#define P_RATECONTROL_QUALITY_TARGET "RateControl.Quality.Target"
+#define P_RATECONTROL_QUALITY_MINIMUM "RateControl.Quality.Minimum"
+#define P_RATECONTROL_QUALITY_MAXIMUM "RateControl.Quality.Maximum"
+#define P_RATECONTROL_QP_I "RateControl.QP.I"
+#define P_RATECONTROL_QP_P "RateControl.QP.P"
+#define P_RATECONTROL_QP_B "RateControl.QP.B"
+#define P_RATECONTROL_QP_I_INITIAL "RateControl.QP.I.Initial"
+#define P_RATECONTROL_QP_P_INITIAL "RateControl.QP.P.Initial"
+#define P_RATECONTROL_QP_B_INITIAL "RateControl.QP.B.Initial"
+
+#define P_KEYFRAMES "KeyFrames"
+#define P_KEYFRAMES_INTERVALTYPE "KeyFrames.IntervalType"
+#define P_KEYFRAMES_INTERVALTYPE_(x) "KeyFrames.IntervalType." D_VSTR(x)
+#define P_KEYFRAMES_INTERVAL "KeyFrames.Interval"
+#define P_KEYFRAMES_INTERVAL_SECONDS "KeyFrames.Interval.Seconds"
+#define P_KEYFRAMES_INTERVAL_FRAMES "KeyFrames.Interval.Frames"