diff --git a/app/src/main/java/net/schueller/peertube/activity/VideoPlayActivity.java b/app/src/main/java/net/schueller/peertube/activity/VideoPlayActivity.java
index 9460e74..159b942 100644
--- a/app/src/main/java/net/schueller/peertube/activity/VideoPlayActivity.java
+++ b/app/src/main/java/net/schueller/peertube/activity/VideoPlayActivity.java
@@ -65,6 +65,7 @@ import androidx.fragment.app.FragmentTransaction;
 import static com.google.android.exoplayer2.ui.PlayerNotificationManager.ACTION_PAUSE;
 import static com.google.android.exoplayer2.ui.PlayerNotificationManager.ACTION_PLAY;
 import static com.google.android.exoplayer2.ui.PlayerNotificationManager.ACTION_STOP;
+import static net.schueller.peertube.helper.VideoHelper.canEnterPipMode;
 
 public class VideoPlayActivity extends AppCompatActivity {
 
@@ -351,7 +352,7 @@ public class VideoPlayActivity extends AppCompatActivity {
         FragmentManager fragmentManager = getSupportFragmentManager();
         VideoPlayerFragment videoPlayerFragment = (VideoPlayerFragment) fragmentManager.findFragmentById(R.id.video_player_fragment);
 
-        String backgroundBehavior = sharedPref.getString("pref_background_behavior", getString(R.string.pref_background_stop_key));
+        String backgroundBehavior = sharedPref.getString(getString(R.string.pref_background_behavior_key), getString(R.string.pref_background_stop_key));
 
         assert videoPlayerFragment != null;
         assert backgroundBehavior != null;
@@ -410,7 +411,7 @@ public class VideoPlayActivity extends AppCompatActivity {
             videoPlayerFragment.pauseVideo();
         }
 
-        String backgroundBehavior = sharedPref.getString("pref_background_behavior", getString(R.string.pref_background_stop_key));
+        String backgroundBehavior = sharedPref.getString(getString(R.string.pref_background_behavior_key), getString(R.string.pref_background_stop_key));
 
         assert backgroundBehavior != null;
 
@@ -448,15 +449,6 @@ public class VideoPlayActivity extends AppCompatActivity {
 
     }
 
-    public boolean canEnterPipMode(Context context) {
-        Log.v(TAG, "api version " + Build.VERSION.SDK_INT);
-        if (Build.VERSION.SDK_INT > 27) {
-            AppOpsManager appOpsManager = (AppOpsManager) context.getSystemService(Context.APP_OPS_SERVICE);
-            return (AppOpsManager.MODE_ALLOWED == appOpsManager.checkOp(AppOpsManager.OPSTR_PICTURE_IN_PICTURE, android.os.Process.myUid(), context.getPackageName()));
-        }
-        return false;
-    }
-
     @RequiresApi(api = Build.VERSION_CODES.O)
     public void enterPipMode() {
         Rational rational = new Rational(239, 100);
diff --git a/app/src/main/java/net/schueller/peertube/fragment/AddServerFragment.java b/app/src/main/java/net/schueller/peertube/fragment/AddServerFragment.java
index 4c90721..9f761a8 100644
--- a/app/src/main/java/net/schueller/peertube/fragment/AddServerFragment.java
+++ b/app/src/main/java/net/schueller/peertube/fragment/AddServerFragment.java
@@ -42,6 +42,8 @@ import net.schueller.peertube.activity.SearchServerActivity;
 import net.schueller.peertube.activity.ServerAddressBookActivity;
 import net.schueller.peertube.helper.APIUrlHelper;
 
+import java.util.Objects;
+
 import static android.app.Activity.RESULT_OK;
 
 
@@ -78,14 +80,15 @@ public class AddServerFragment extends Fragment {
 
             Activity act = getActivity();
 
-            Boolean formValid = true;
+            boolean formValid = true;
 
             // close keyboard
             try {
+                assert act != null;
                 InputMethodManager inputManager = (InputMethodManager)
                         act.getSystemService(Context.INPUT_METHOD_SERVICE);
 
-                inputManager.hideSoftInputFromWindow(act.getCurrentFocus().getWindowToken(),
+                inputManager.hideSoftInputFromWindow(Objects.requireNonNull(act.getCurrentFocus()).getWindowToken(),
                         InputMethodManager.HIDE_NOT_ALWAYS);
             } catch (Exception e) {
 
diff --git a/app/src/main/java/net/schueller/peertube/fragment/VideoOptionsFragment.java b/app/src/main/java/net/schueller/peertube/fragment/VideoOptionsFragment.java
index 2e9c3b4..ada3fdf 100644
--- a/app/src/main/java/net/schueller/peertube/fragment/VideoOptionsFragment.java
+++ b/app/src/main/java/net/schueller/peertube/fragment/VideoOptionsFragment.java
@@ -28,6 +28,7 @@ import android.widget.TextView;
 
 import com.google.android.material.bottomsheet.BottomSheetDialogFragment;
 import com.mikepenz.iconics.Iconics;
+
 import net.schueller.peertube.R;
 import net.schueller.peertube.model.File;
 import net.schueller.peertube.service.VideoPlayerService;
@@ -66,13 +67,22 @@ public class VideoOptionsFragment extends BottomSheetDialogFragment {
         LinearLayout menuRow = (LinearLayout) inflater.inflate(R.layout.row_popup_menu, null);
         TextView iconView = menuRow.findViewById(R.id.video_quality_icon);
         TextView textView = menuRow.findViewById(R.id.video_quality_text);
-        textView.setText(String.format(getString(R.string.menu_video_options_playback_speed), getCurrentVideoPlaybackSpeedString(videoPlayerService.getPlayBackSpeed())));
+
+        textView.setText(
+                getString(
+                        R.string.menu_video_options_playback_speed,
+                        getCurrentVideoPlaybackSpeedString(videoPlayerService.getPlayBackSpeed()
+                        )
+                )
+        );
+
+
         iconView.setText(R.string.video_option_speed_icon);
         new Iconics.IconicsBuilder().ctx(getContext()).on(iconView).build();
         textView.setOnClickListener(view1 -> {
             VideoMenuSpeedFragment videoMenuSpeedFragment =
                     VideoMenuSpeedFragment.newInstance(videoPlayerService);
-            videoMenuSpeedFragment.show(getActivity().getSupportFragmentManager(),
+            videoMenuSpeedFragment.show(requireActivity().getSupportFragmentManager(),
                     VideoMenuSpeedFragment.TAG);
         });
         menuHolder.addView(menuRow);
@@ -87,8 +97,8 @@ public class VideoOptionsFragment extends BottomSheetDialogFragment {
         textView2.setOnClickListener(view1 -> {
             VideoMenuQualityFragment videoMenuQualityFragment =
                     VideoMenuQualityFragment.newInstance(getContext(), files);
-            videoMenuQualityFragment.show(getActivity().getSupportFragmentManager(),
-                    videoMenuQualityFragment.TAG);
+            videoMenuQualityFragment.show(requireActivity().getSupportFragmentManager(),
+                    VideoMenuQualityFragment.TAG);
         });
         menuHolder.addView(menuRow2);
 
diff --git a/app/src/main/java/net/schueller/peertube/fragment/VideoPlayerFragment.java b/app/src/main/java/net/schueller/peertube/fragment/VideoPlayerFragment.java
index 9fad3b3..16c75cf 100644
--- a/app/src/main/java/net/schueller/peertube/fragment/VideoPlayerFragment.java
+++ b/app/src/main/java/net/schueller/peertube/fragment/VideoPlayerFragment.java
@@ -18,7 +18,6 @@
 package net.schueller.peertube.fragment;
 
 import android.app.Activity;
-import android.app.AppOpsManager;
 import android.content.ComponentName;
 import android.content.Context;
 import android.content.Intent;
@@ -66,15 +65,16 @@ import net.schueller.peertube.network.GetVideoDataService;
 import net.schueller.peertube.network.RetrofitInstance;
 import net.schueller.peertube.service.VideoPlayerService;
 
-import java.util.Objects;
-
 import androidx.annotation.NonNull;
 import androidx.annotation.RequiresApi;
 import androidx.fragment.app.Fragment;
+
 import retrofit2.Call;
 import retrofit2.Callback;
 import retrofit2.Response;
 
+import static net.schueller.peertube.helper.VideoHelper.canEnterPipMode;
+
 public class VideoPlayerFragment extends Fragment implements VideoRendererEventListener {
 
     private String mVideoUuid;
@@ -134,6 +134,7 @@ public class VideoPlayerFragment extends Fragment implements VideoRendererEventL
         progressBar = activity.findViewById(R.id.torrent_progress);
         progressBar.setMax(100);
 
+        assert context != null;
         simpleExoPlayerView = new PlayerView(context);
         simpleExoPlayerView = activity.findViewById(R.id.video_view);
 
@@ -195,23 +196,24 @@ public class VideoPlayerFragment extends Fragment implements VideoRendererEventL
             @Override
             public void onFailure(@NonNull Call<Video> call, @NonNull Throwable t) {
                 Log.wtf(TAG, t.fillInStackTrace());
-                Toast.makeText(context, "Something went wrong: "+t.getLocalizedMessage(), Toast.LENGTH_LONG).show();
+                Toast.makeText(context, "Something went wrong: " + t.getLocalizedMessage(), Toast.LENGTH_LONG).show();
             }
         });
     }
-    public void useController(boolean value){
-        if (mBound){
+
+    public void useController(boolean value) {
+        if (mBound) {
             simpleExoPlayerView.setUseController(value);
         }
     }
+
     private void playVideo(Video video) {
 
         Context context = getContext();
 
         // video Meta fragment
-        assert getFragmentManager() != null;
         VideoMetaDataFragment videoMetaDataFragment = (VideoMetaDataFragment)
-                getFragmentManager().findFragmentById(R.id.video_meta_data_fragment);
+                requireActivity().getSupportFragmentManager().findFragmentById(R.id.video_meta_data_fragment);
 
         assert videoMetaDataFragment != null;
         videoMetaDataFragment.updateVideoMeta(video, mService);
@@ -230,7 +232,7 @@ public class VideoPlayerFragment extends Fragment implements VideoRendererEventL
 
             //get video qualities
             String urlToPlay = video.getFiles().get(0).getFileUrl();
-            for (File file :video.getFiles()) {
+            for (File file : video.getFiles()) {
                 // Set quality if it matches
                 if (file.getResolution().getId().equals(videoQuality)) {
                     urlToPlay = file.getFileUrl();
@@ -247,7 +249,7 @@ public class VideoPlayerFragment extends Fragment implements VideoRendererEventL
     }
 
     private void startPlayer() {
-        Util.startForegroundService(Objects.requireNonNull(getContext()), videoPlayerIntent);
+        Util.startForegroundService(requireContext(), videoPlayerIntent);
     }
 
 
@@ -259,30 +261,35 @@ public class VideoPlayerFragment extends Fragment implements VideoRendererEventL
     }
 
     public void pauseVideo() {
-        if (mBound){
+        if (mBound) {
             mService.player.setPlayWhenReady(false);
         }
     }
+
     public void pauseToggle() {
         if (mBound) {
             mService.player.setPlayWhenReady(!mService.player.getPlayWhenReady());
         }
     }
+
     public void unPauseVideo() {
         if (mBound) {
             mService.player.setPlayWhenReady(true);
         }
     }
-    public boolean isPaused(){
+
+    public boolean isPaused() {
         return !mService.player.getPlayWhenReady();
     }
-    public void showControls(boolean value){
+
+    public void showControls(boolean value) {
         simpleExoPlayerView.setUseController(value);
     }
+
     public void stopVideo() {
 
         if (mBound) {
-            Objects.requireNonNull(getContext()).unbindService(mConnection);
+            requireContext().unbindService(mConnection);
             mBound = false;
         }
     }
@@ -290,7 +297,7 @@ public class VideoPlayerFragment extends Fragment implements VideoRendererEventL
     public void setIsFullscreen(Boolean fullscreen) {
         isFullscreen = fullscreen;
 
-        TextView fullscreenButton = getActivity().findViewById(R.id.exo_fullscreen);
+        TextView fullscreenButton = requireActivity().findViewById(R.id.exo_fullscreen);
         if (fullscreen) {
             fullscreenButton.setText(R.string.video_compress_icon);
         } else {
@@ -302,15 +309,17 @@ public class VideoPlayerFragment extends Fragment implements VideoRendererEventL
     public Boolean getIsFullscreen() {
         return isFullscreen;
     }
+
     public void fullScreenToggle() {
         if (!isFullscreen) {
             setIsFullscreen(true);
-            getActivity().setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
+            requireActivity().setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
         } else {
             setIsFullscreen(false);
-            getActivity().setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
+            requireActivity().setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
         }
     }
+
     /**
      * Torrent Playback
      *
@@ -404,18 +413,6 @@ public class VideoPlayerFragment extends Fragment implements VideoRendererEventL
         Log.v(TAG, "onVideoDisabled()...");
     }
 
-    public static boolean canEnterPipMode(Context context) {
-        Log.v(TAG,"api version "+Build.VERSION.SDK_INT);
-        if (Build.VERSION.SDK_INT<28){
-            return false;
-        }
-        SharedPreferences sharedPref = PreferenceManager.getDefaultSharedPreferences(context);
-        if (!"BackgroundFloat".equals(sharedPref.getString("pref_background_behavior","backgroundStop"))){
-            return false;
-        }
-        AppOpsManager appOpsManager = (AppOpsManager) context.getSystemService(Context.APP_OPS_SERVICE);
-        return (AppOpsManager.MODE_ALLOWED== appOpsManager.checkOpNoThrow(AppOpsManager.OPSTR_PICTURE_IN_PICTURE, android.os.Process.myUid(), context.getPackageName()));
-    }
     View.OnTouchListener touchListener = new View.OnTouchListener() {
         @Override
         public boolean onTouch(View v, MotionEvent event) {
@@ -423,62 +420,64 @@ public class VideoPlayerFragment extends Fragment implements VideoRendererEventL
         }
 
     };
-    public String getVideoUuid(){
+
+    public String getVideoUuid() {
         return mVideoUuid;
     }
+
     class MyGestureListener extends GestureDetector.SimpleOnGestureListener {
-/*
-        @Override
-        public boolean onDown(MotionEvent event) {
-            Log.d("TAG","onDown: ");
-            return true;
-        }
+        /*
+                @Override
+                public boolean onDown(MotionEvent event) {
+                    Log.d("TAG","onDown: ");
+                    return true;
+                }
 
-        @Override
-        public boolean onSingleTapConfirmed(MotionEvent e) {
-            Log.i("TAG", "onSingleTapConfirmed: ");
-            pauseToggle();
-            return true;
-        }
+                @Override
+                public boolean onSingleTapConfirmed(MotionEvent e) {
+                    Log.i("TAG", "onSingleTapConfirmed: ");
+                    pauseToggle();
+                    return true;
+                }
 
-        @Override
-        public void onLongPress(MotionEvent e) {
-            Log.i("TAG", "onLongPress: ");
-        }
+                @Override
+                public void onLongPress(MotionEvent e) {
+                    Log.i("TAG", "onLongPress: ");
+                }
 
-        @Override
-        public boolean onDoubleTap(MotionEvent e) {
-            Log.i("TAG", "onDoubleTap: ");
-            return true;
-        }
+                @Override
+                public boolean onDoubleTap(MotionEvent e) {
+                    Log.i("TAG", "onDoubleTap: ");
+                    return true;
+                }
 
-        @Override
-        public boolean onScroll(MotionEvent e1, MotionEvent e2,
-                                float distanceX, float distanceY) {
-            Log.i("TAG", "onScroll: ");
-            return true;
-        }
-*/
+                @Override
+                public boolean onScroll(MotionEvent e1, MotionEvent e2,
+                                        float distanceX, float distanceY) {
+                    Log.i("TAG", "onScroll: ");
+                    return true;
+                }
+        */
         @RequiresApi(api = Build.VERSION_CODES.N)
         @Override
         public boolean onFling(MotionEvent event1, MotionEvent event2,
                                float velocityX, float velocityY) {
-            Log.d(TAG ,event1.toString());
-            Log.d(TAG,event2.toString());
+            Log.d(TAG, event1.toString());
+            Log.d(TAG, event2.toString());
             Log.d(TAG, String.valueOf(velocityX));
-            Log.d(TAG , String.valueOf(velocityY));
+            Log.d(TAG, String.valueOf(velocityY));
             //arbitrarily velocity speeds that seem to work to differentiate events.
-            if (velocityY>4000){
-                Log.d(TAG,"we have a drag down event");
+            if (velocityY > 4000) {
+                Log.d(TAG, "we have a drag down event");
                 if (canEnterPipMode(getContext())) {
-                    getActivity().enterPictureInPictureMode();
+                    requireActivity().enterPictureInPictureMode();
                 }
             }
-            if ((velocityX>2000) && (Math.abs(velocityY) <2000)){
-                Log.d(TAG,"swipe right "+velocityY);
+            if ((velocityX > 2000) && (Math.abs(velocityY) < 2000)) {
+                Log.d(TAG, "swipe right " + velocityY);
             }
-            if ((velocityX<2000) && (Math.abs(velocityY)<2000)){
-                Log.d(TAG,"swipe left "+velocityY);
+            if ((velocityX < 2000) && (Math.abs(velocityY) < 2000)) {
+                Log.d(TAG, "swipe left " + velocityY);
             }
             return true;
         }
diff --git a/app/src/main/java/net/schueller/peertube/helper/VideoHelper.java b/app/src/main/java/net/schueller/peertube/helper/VideoHelper.java
new file mode 100644
index 0000000..305a8c1
--- /dev/null
+++ b/app/src/main/java/net/schueller/peertube/helper/VideoHelper.java
@@ -0,0 +1,40 @@
+package net.schueller.peertube.helper;
+
+import android.app.AppOpsManager;
+import android.content.Context;
+import android.content.SharedPreferences;
+import android.os.Build;
+import android.preference.PreferenceManager;
+import android.util.Log;
+
+import net.schueller.peertube.R;
+
+public class VideoHelper {
+
+    private static final String TAG = "VideoHelper";
+
+    public static boolean canEnterPipMode(Context context) {
+
+        SharedPreferences sharedPref = PreferenceManager.getDefaultSharedPreferences(context);
+
+        context.getString(R.string.pref_background_float_key);
+
+        // pref is disabled
+        if (!context.getString(R.string.pref_background_float_key).equals(
+                sharedPref.getString(
+                        context.getString(R.string.pref_background_behavior_key),
+                        context.getString(R.string.pref_background_float_key))
+            )
+        ) {
+            return false;
+        }
+
+        // api does not support it
+        Log.v(TAG, "api version " + Build.VERSION.SDK_INT);
+        if (Build.VERSION.SDK_INT > 27) {
+            AppOpsManager appOpsManager = (AppOpsManager) context.getSystemService(Context.APP_OPS_SERVICE);
+            return (AppOpsManager.MODE_ALLOWED == appOpsManager.checkOp(AppOpsManager.OPSTR_PICTURE_IN_PICTURE, android.os.Process.myUid(), context.getPackageName()));
+        }
+        return false;
+    }
+}
diff --git a/app/src/main/res/values-ar/strings.xml b/app/src/main/res/values-ar/strings.xml
index cf2e631..b8120c0 100644
--- a/app/src/main/res/values-ar/strings.xml
+++ b/app/src/main/res/values-ar/strings.xml
@@ -143,8 +143,8 @@
     <string name="video_meta_button_license">الرخصة</string>
     <string name="video_meta_button_language">اللغة</string>
     <string name="video_meta_button_tags">العلامات</string>
-    <string name="menu_video_options_playback_speed" formatted="true">سرعة التشغيل (s%)</string>
-    <string name="menu_video_options_quality" formatted="true">(%s) الجودة</string>
+    <string name="menu_video_options_playback_speed" formatted="true">سرعة التشغيل (%1$s)</string>
+    <string name="menu_video_options_quality" formatted="true">(%1$s) الجودة</string>
     <string name="account_bottom_menu_videos">الفيديو</string>
     <string name="account_bottom_menu_channels">القنوات</string>
     <string name="account_bottom_menu_about">حول</string>
diff --git a/app/src/main/res/values-bn/strings.xml b/app/src/main/res/values-bn/strings.xml
index 5fa6e20..2daa4f9 100644
--- a/app/src/main/res/values-bn/strings.xml
+++ b/app/src/main/res/values-bn/strings.xml
@@ -285,8 +285,8 @@
     <string name="deeppurple">গাঢ় বেগুনি</string>
     <string name="action_bar_title_account">অ্যাকাউন্ট</string>
     <string name="bottom_nav_title_recent">সাম্প্রতিক</string>
-    <string name="menu_video_options_playback_speed" formatted="true">প্লেব্যাক এর গতি (%s)</string>
-    <string name="menu_video_options_quality" formatted="true">কোয়ালিটি (%s)</string>
+    <string name="menu_video_options_playback_speed" formatted="true">প্লেব্যাক এর গতি (%1$s)</string>
+    <string name="menu_video_options_quality" formatted="true">কোয়ালিটি (%1$s)</string>
     <string name="account_bottom_menu_videos">ভিডিও</string>
     <string name="account_bottom_menu_channels">চ্যানেলগুলি</string>
     <string name="account_bottom_menu_about">সম্পর্কিত</string>
diff --git a/app/src/main/res/values-de/strings.xml b/app/src/main/res/values-de/strings.xml
index a6425f9..f78b5f3 100644
--- a/app/src/main/res/values-de/strings.xml
+++ b/app/src/main/res/values-de/strings.xml
@@ -276,8 +276,8 @@
     <string name="video_meta_button_license">Lizenz</string>
     <string name="video_meta_button_language">Sprache</string>
     <string name="video_meta_button_tags">Tags</string>
-    <string name="menu_video_options_playback_speed" formatted="true">Wiedergabegeschwindigkeit (%s)</string>
-    <string name="menu_video_options_quality" formatted="true">Qualität (%s)</string>
+    <string name="menu_video_options_playback_speed" formatted="true">Wiedergabegeschwindigkeit (%1$s)</string>
+    <string name="menu_video_options_quality" formatted="true">Qualität (%1$s)</string>
     <string name="account_bottom_menu_videos">Videos</string>
     <string name="account_bottom_menu_channels">Kanäle</string>
     <string name="account_bottom_menu_about">Über</string>
diff --git a/app/src/main/res/values-es/strings.xml b/app/src/main/res/values-es/strings.xml
index c34ccb4..b086528 100644
--- a/app/src/main/res/values-es/strings.xml
+++ b/app/src/main/res/values-es/strings.xml
@@ -96,8 +96,8 @@
     <string name="video_meta_button_license">Licencia</string>
     <string name="video_meta_button_language">Idioma</string>
     <string name="video_meta_button_tags">Etiquetas</string>
-    <string name="menu_video_options_playback_speed" formatted="true">Velocidad de reproducción (%s)</string>
-    <string name="menu_video_options_quality" formatted="true">Calidad (%s)</string>
+    <string name="menu_video_options_playback_speed" formatted="true">Velocidad de reproducción (%1$s)</string>
+    <string name="menu_video_options_quality" formatted="true">Calidad (%1$s)</string>
     <string name="account_bottom_menu_videos">Vídeos</string>
     <string name="account_bottom_menu_channels">Canales</string>
     <string name="account_bottom_menu_about">Acerca de</string>
diff --git a/app/src/main/res/values-fi/strings.xml b/app/src/main/res/values-fi/strings.xml
index 8071156..b7a1730 100644
--- a/app/src/main/res/values-fi/strings.xml
+++ b/app/src/main/res/values-fi/strings.xml
@@ -204,7 +204,7 @@
     <string name="nv">navajo</string>
     <string name="kr">kanuri</string>
     <string name="su">sunda</string>
-    <string name="menu_video_options_playback_speed" formatted="true">Toistonopeus (%s)</string>
+    <string name="menu_video_options_playback_speed" formatted="true">Toistonopeus (%1$s)</string>
     <string name="ii">sichuanin-yi</string>
     <string name="red">Punainen</string>
     <string name="video_row_video_thumbnail">Videon esikatselukuva</string>
diff --git a/app/src/main/res/values-fr/strings.xml b/app/src/main/res/values-fr/strings.xml
index 0bf2264..f222277 100644
--- a/app/src/main/res/values-fr/strings.xml
+++ b/app/src/main/res/values-fr/strings.xml
@@ -99,8 +99,8 @@
     <string name="video_meta_button_license">Licence</string>
     <string name="video_meta_button_language">Langue</string>
     <string name="video_meta_button_tags">Étiquettes</string>
-    <string name="menu_video_options_playback_speed" formatted="true">Vitesse de lecture (%s)</string>
-    <string name="menu_video_options_quality" formatted="true">Qualité (%s)</string>
+    <string name="menu_video_options_playback_speed" formatted="true">Vitesse de lecture (%1$s)</string>
+    <string name="menu_video_options_quality" formatted="true">Qualité (%1$s)</string>
     <string name="account_bottom_menu_videos">Vidéos</string>
     <string name="account_bottom_menu_channels">Chaînes</string>
     <string name="account_bottom_menu_about">À propos</string>
diff --git a/app/src/main/res/values-gd/strings.xml b/app/src/main/res/values-gd/strings.xml
index 69b4a36..0a91e2f 100644
--- a/app/src/main/res/values-gd/strings.xml
+++ b/app/src/main/res/values-gd/strings.xml
@@ -285,8 +285,8 @@
     <string name="video_meta_button_license">Ceadachas</string>
     <string name="video_meta_button_language">Cànan</string>
     <string name="video_meta_button_tags">Tagaichean</string>
-    <string name="menu_video_options_playback_speed" formatted="true">Luaths na cluiche (%s)</string>
-    <string name="menu_video_options_quality" formatted="true">Càileachd (%s)</string>
+    <string name="menu_video_options_playback_speed" formatted="true">Luaths na cluiche (%1$s)</string>
+    <string name="menu_video_options_quality" formatted="true">Càileachd (%1$s)</string>
     <string name="account_bottom_menu_videos">Videothan</string>
     <string name="account_bottom_menu_channels">Seanailean</string>
     <string name="account_bottom_menu_about">Mu dhèidhinn</string>
diff --git a/app/src/main/res/values-it/strings.xml b/app/src/main/res/values-it/strings.xml
index 7c482cf..ae96838 100644
--- a/app/src/main/res/values-it/strings.xml
+++ b/app/src/main/res/values-it/strings.xml
@@ -286,8 +286,8 @@
     <string name="video_meta_button_license">Licenza</string>
     <string name="video_meta_button_language">Lingua</string>
     <string name="video_meta_button_tags">Parole chiave</string>
-    <string name="menu_video_options_playback_speed" formatted="true">Velocità di riproduzione (%s)</string>
-    <string name="menu_video_options_quality" formatted="true">Qualità (%s)</string>
+    <string name="menu_video_options_playback_speed" formatted="true">Velocità di riproduzione (%1$s)</string>
+    <string name="menu_video_options_quality" formatted="true">Qualità (%1$s)</string>
     <string name="account_bottom_menu_videos">Video</string>
     <string name="account_bottom_menu_channels">Canali</string>
     <string name="account_bottom_menu_about">A proposito</string>
diff --git a/app/src/main/res/values-ja/strings.xml b/app/src/main/res/values-ja/strings.xml
index f993ef9..29b6f63 100644
--- a/app/src/main/res/values-ja/strings.xml
+++ b/app/src/main/res/values-ja/strings.xml
@@ -88,8 +88,8 @@
     <string name="video_meta_button_license">ラインセンス</string>
     <string name="video_meta_button_language">言語</string>
     <string name="video_meta_button_tags">タグ</string>
-    <string name="menu_video_options_playback_speed" formatted="true">再生速度 (%s)</string>
-    <string name="menu_video_options_quality" formatted="true">クオリティ(%s)</string>
+    <string name="menu_video_options_playback_speed" formatted="true">再生速度 (%1$s)</string>
+    <string name="menu_video_options_quality" formatted="true">クオリティ(%1$s)</string>
     <string name="account_bottom_menu_videos">ビデオ</string>
     <string name="account_bottom_menu_channels">チャンネル</string>
     <string name="account_bottom_menu_about">情報</string>
diff --git a/app/src/main/res/values-nb-rNO/strings.xml b/app/src/main/res/values-nb-rNO/strings.xml
index 8288fd7..b80e188 100644
--- a/app/src/main/res/values-nb-rNO/strings.xml
+++ b/app/src/main/res/values-nb-rNO/strings.xml
@@ -51,8 +51,8 @@
     <string name="video_meta_button_license">Lisens</string>
     <string name="video_meta_button_language">Språk</string>
     <string name="video_meta_button_tags">Etiketter</string>
-    <string name="menu_video_options_playback_speed" formatted="true">Avspillingshastighet (%s)</string>
-    <string name="menu_video_options_quality" formatted="true">Kvalitet (%s)</string>
+    <string name="menu_video_options_playback_speed" formatted="true">Avspillingshastighet (%1$s)</string>
+    <string name="menu_video_options_quality" formatted="true">Kvalitet (%1$s)</string>
     <string name="account_bottom_menu_videos">Videoer</string>
     <string name="account_bottom_menu_channels">Kanaler</string>
     <string name="account_bottom_menu_about">Om</string>
diff --git a/app/src/main/res/values-nl/strings.xml b/app/src/main/res/values-nl/strings.xml
index 97f079d..c9ffd35 100644
--- a/app/src/main/res/values-nl/strings.xml
+++ b/app/src/main/res/values-nl/strings.xml
@@ -275,8 +275,8 @@
     <string name="video_meta_button_license">Licentie</string>
     <string name="video_meta_button_language">Taal</string>
     <string name="video_meta_button_tags">Labels</string>
-    <string name="menu_video_options_playback_speed" formatted="true">Afspeelsnelheid (%s)</string>
-    <string name="menu_video_options_quality" formatted="true">Kwaliteit (%s)</string>
+    <string name="menu_video_options_playback_speed" formatted="true">Afspeelsnelheid (%1$s)</string>
+    <string name="menu_video_options_quality" formatted="true">Kwaliteit (%1$s)</string>
     <string name="account_bottom_menu_videos">Video\'s</string>
     <string name="account_bottom_menu_channels">Kanalen</string>
     <string name="account_bottom_menu_about">Over</string>
diff --git a/app/src/main/res/values-pl/strings.xml b/app/src/main/res/values-pl/strings.xml
index 3cc2890..2a0e0e0 100644
--- a/app/src/main/res/values-pl/strings.xml
+++ b/app/src/main/res/values-pl/strings.xml
@@ -48,8 +48,8 @@
     <string name="account_about_account">Konto:</string>
     <string name="account_bottom_menu_channels">Kanały</string>
     <string name="account_bottom_menu_videos">Filmy</string>
-    <string name="menu_video_options_quality" formatted="true">Jakość (%s)</string>
-    <string name="menu_video_options_playback_speed" formatted="true">Prędkość odtwarzania (%s)</string>
+    <string name="menu_video_options_quality" formatted="true">Jakość (%1$s)</string>
+    <string name="menu_video_options_playback_speed" formatted="true">Prędkość odtwarzania (%1$s)</string>
     <string name="video_meta_button_tags">Znaczniki</string>
     <string name="video_meta_button_language">Język</string>
     <string name="video_meta_button_license">Licencja</string>
diff --git a/app/src/main/res/values-ru/strings.xml b/app/src/main/res/values-ru/strings.xml
index 719be8e..0567585 100644
--- a/app/src/main/res/values-ru/strings.xml
+++ b/app/src/main/res/values-ru/strings.xml
@@ -277,8 +277,8 @@
     <string name="video_meta_button_license">Лицензия</string>
     <string name="video_meta_button_language">Язык</string>
     <string name="video_meta_button_tags">Теги</string>
-    <string name="menu_video_options_playback_speed" formatted="true">Скорость воспроизведения (%s)</string>
-    <string name="menu_video_options_quality" formatted="true">Качество (%s)</string>
+    <string name="menu_video_options_playback_speed" formatted="true">Скорость воспроизведения (%1$s)</string>
+    <string name="menu_video_options_quality" formatted="true">Качество (%1$s)</string>
     <string name="account_about_description">Описание:</string>
     <string name="api_error">Что-то пошло не так, пожалуйста, попробуйте позже!</string>
     <string name="action_set_url">Выберите сервер</string>
diff --git a/app/src/main/res/values-sv/strings.xml b/app/src/main/res/values-sv/strings.xml
index f3989a9..8025dbb 100644
--- a/app/src/main/res/values-sv/strings.xml
+++ b/app/src/main/res/values-sv/strings.xml
@@ -272,8 +272,8 @@
     <string name="video_meta_button_license">Licens</string>
     <string name="video_meta_button_language">Språk</string>
     <string name="video_meta_button_tags">Taggar</string>
-    <string name="menu_video_options_playback_speed" formatted="true">Uppspelningshastighet (%s)</string>
-    <string name="menu_video_options_quality" formatted="true">Kvalitet (%s)</string>
+    <string name="menu_video_options_playback_speed" formatted="true">Uppspelningshastighet (%1$s)</string>
+    <string name="menu_video_options_quality" formatted="true">Kvalitet (%1$s)</string>
     <string name="account_bottom_menu_videos">Videor</string>
     <string name="account_bottom_menu_channels">Kanaler</string>
     <string name="account_bottom_menu_about">Om</string>
diff --git a/app/src/main/res/values-tr/strings.xml b/app/src/main/res/values-tr/strings.xml
index 47da5b1..aabaed2 100644
--- a/app/src/main/res/values-tr/strings.xml
+++ b/app/src/main/res/values-tr/strings.xml
@@ -291,8 +291,8 @@
     <string name="video_meta_button_license">Lisans</string>
     <string name="video_meta_button_language">Dil</string>
     <string name="video_meta_button_tags">Etiketler</string>
-    <string name="menu_video_options_playback_speed" formatted="true">Oynatma hızı (%s)</string>
-    <string name="menu_video_options_quality" formatted="true">Kalite (%s)</string>
+    <string name="menu_video_options_playback_speed" formatted="true">Oynatma hızı (%1$s)</string>
+    <string name="menu_video_options_quality" formatted="true">Kalite (%1$s)</string>
     <!-- Constants, Don't translate -->
     <string name="action_bar_title_account">Hesap</string>
     <string name="bottom_nav_title_recent">Yeniler</string>
diff --git a/app/src/main/res/values-zh-rCN/strings.xml b/app/src/main/res/values-zh-rCN/strings.xml
index e7835eb..2da25c3 100644
--- a/app/src/main/res/values-zh-rCN/strings.xml
+++ b/app/src/main/res/values-zh-rCN/strings.xml
@@ -112,8 +112,8 @@
     <string name="video_meta_button_category">类别</string>
     <string name="video_meta_button_license">许可</string>
     <string name="video_meta_button_tags">标签</string>
-    <string name="menu_video_options_playback_speed" formatted="true">播放速度 (%s)</string>
-    <string name="menu_video_options_quality" formatted="true">画质 (%s)</string>
+    <string name="menu_video_options_playback_speed" formatted="true">播放速度 (%1$s)</string>
+    <string name="menu_video_options_quality" formatted="true">画质 (%1$s)</string>
     <string name="account_bottom_menu_videos">视频</string>
     <string name="account_bottom_menu_channels">频道</string>
     <string name="account_bottom_menu_about">关于</string>
diff --git a/app/src/main/res/values-zh-rTW/strings.xml b/app/src/main/res/values-zh-rTW/strings.xml
index 16c0824..8501511 100644
--- a/app/src/main/res/values-zh-rTW/strings.xml
+++ b/app/src/main/res/values-zh-rTW/strings.xml
@@ -279,8 +279,8 @@
     <string name="video_meta_button_license">授權條款</string>
     <string name="video_meta_button_language">語言</string>
     <string name="video_meta_button_tags">標籤</string>
-    <string name="menu_video_options_playback_speed" formatted="true">播放速度 (%s)</string>
-    <string name="menu_video_options_quality" formatted="true">畫質 (%s)</string>
+    <string name="menu_video_options_playback_speed" formatted="true">播放速度 (%1$s)</string>
+    <string name="menu_video_options_quality" formatted="true">畫質 (%1$s)</string>
     <string name="account_bottom_menu_videos">影片</string>
     <string name="account_bottom_menu_channels">頻道</string>
     <string name="account_bottom_menu_about">關於</string>
diff --git a/app/src/main/res/values/constants.xml b/app/src/main/res/values/constants.xml
index 0cfa51f..ecfcc8e 100644
--- a/app/src/main/res/values/constants.xml
+++ b/app/src/main/res/values/constants.xml
@@ -9,6 +9,7 @@
     <string name="pref_token_type" translatable="false">pref_token_type</string>
     <string name="pref_auth_username" translatable="false">pref_auth_username</string>
     <string name="pref_auth_password" translatable="false">pref_auth_password</string>
+    <string name="pref_background_behavior_key" translatable="false">pref_background_behavior</string>
     <string name="pref_background_audio_key" translatable="false">backgroundAudio</string>
     <string name="pref_background_stop_key" translatable="false">backgroundStop</string>
     <string name="pref_background_float_key" translatable="false">backgroundFloat</string>
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index 065d6ce..32a586e 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -308,8 +308,8 @@
     <string name="video_meta_button_license">License</string>
     <string name="video_meta_button_language">Language</string>
     <string name="video_meta_button_tags">Tags</string>
-    <string name="menu_video_options_playback_speed" formatted="true">Playback speed (%s)</string>
-    <string name="menu_video_options_quality" formatted="true">Quality (%s)</string>
+    <string name="menu_video_options_playback_speed" formatted="true">Playback speed (%1$s)</string>
+    <string name="menu_video_options_quality" formatted="true">Quality (%1$s)</string>
     <string name="account_bottom_menu_videos">Videos</string>
     <string name="account_bottom_menu_channels">Channels</string>
     <string name="account_bottom_menu_about">About</string>
diff --git a/app/src/main/res/xml/root_preferences.xml b/app/src/main/res/xml/root_preferences.xml
index e4ece20..ba7b0e3 100644
--- a/app/src/main/res/xml/root_preferences.xml
+++ b/app/src/main/res/xml/root_preferences.xml
@@ -62,7 +62,7 @@
             app:defaultValue="@array/empty_array"
             app:entries="@array/backgroundBehavior"
             app:entryValues="@array/backgroundBehaviorValues"
-            app:key="pref_background_behavior"
+            app:key="@string/pref_background_behavior_key"
             app:summary="@string/pref_background_behavior_summary"
             app:title="@string/pref_background_behavior"
             app:iconSpaceReserved="false"/>