diff --git a/app/src/main/java/de/jg_cody/Teraplex/MainActivity.java b/app/src/main/java/de/jg_cody/Teraplex/MainActivity.java
index 2b84916..6eb1945 100644
--- a/app/src/main/java/de/jg_cody/Teraplex/MainActivity.java
+++ b/app/src/main/java/de/jg_cody/Teraplex/MainActivity.java
@@ -309,7 +309,6 @@ public class MainActivity extends AppCompatActivity {
                 mBuilder.setTitle(R.string.menu_remove);
 
                 mBuilder.setMultiChoiceItems(tabsarray, null, new DialogInterface.OnMultiChoiceClickListener() {
-                    @RequiresApi(api = Build.VERSION_CODES.KITKAT)
                     @Override
                     public void onClick(DialogInterface dialogInterface, int i, boolean isChecked) {
                         String selectedItem = tabsarray[i];
diff --git a/app/src/main/java/de/jg_cody/Teraplex/ui/Tabs/TabsFragment.java b/app/src/main/java/de/jg_cody/Teraplex/ui/Tabs/TabsFragment.java
index b434029..6e18449 100644
--- a/app/src/main/java/de/jg_cody/Teraplex/ui/Tabs/TabsFragment.java
+++ b/app/src/main/java/de/jg_cody/Teraplex/ui/Tabs/TabsFragment.java
@@ -162,7 +162,6 @@ public class TabsFragment extends Fragment implements AddButtonDialogSingle.AddB
         AlertDialog.Builder mBuilder = new AlertDialog.Builder(getActivity());
         mBuilder.setTitle(getString(R.string.choose_element));
         mBuilder.setSingleChoiceItems(listItems, -1, new DialogInterface.OnClickListener() {
-            @RequiresApi(api = Build.VERSION_CODES.KITKAT)
             @Override
             public void onClick(DialogInterface dialogInterface, int i) {
                 if (i == 0) {
@@ -209,7 +208,6 @@ public class TabsFragment extends Fragment implements AddButtonDialogSingle.AddB
         addHeadlineDialog.show(requireActivity().getSupportFragmentManager(), getString(R.string.heading));
     }
 
-    @RequiresApi(api = Build.VERSION_CODES.KITKAT)
     @Override
     public void applyTextsSingle(String name, String command, String button) {
         //items.add(new ListItemSingle(0,name,command,button));
@@ -222,7 +220,6 @@ public class TabsFragment extends Fragment implements AddButtonDialogSingle.AddB
 
     }
 
-    @RequiresApi(api = Build.VERSION_CODES.KITKAT)
     @Override
     public void applyTextsDouble(String name, String command1, String command2, String button1, String button2) {
         listAdapter.add(new ListItemDouble(name, command1, command2, button1, button2));
@@ -233,7 +230,6 @@ public class TabsFragment extends Fragment implements AddButtonDialogSingle.AddB
         }
     }
 
-    @RequiresApi(api = Build.VERSION_CODES.KITKAT)
     @Override
     public void applyTextsHeadline(String headline) {
         listAdapter.add(new ListItemHeadline(headline));
diff --git a/app/src/main/res/layout/fragment_intro.xml b/app/src/main/res/layout/fragment_intro.xml
index 62e6196..1bd4ed9 100644
--- a/app/src/main/res/layout/fragment_intro.xml
+++ b/app/src/main/res/layout/fragment_intro.xml
@@ -9,9 +9,9 @@
 
     <VideoView
         android:id="@+id/videoView"
-        android:layout_width="fill_parent"
-        android:layout_height="fill_parent"
-                app:layout_constraintBottom_toBottomOf="parent"
+        android:layout_width="0dp"
+        android:layout_height="0dp"
+        app:layout_constraintBottom_toBottomOf="parent"
         app:layout_constraintHorizontal_bias="0.0"
         app:layout_constraintLeft_toLeftOf="parent"
         app:layout_constraintRight_toRightOf="parent"
diff --git a/app/src/main/res/raw/intro.mp4 b/app/src/main/res/raw/intro.mp4
deleted file mode 100644
index 9f6914a..0000000
Binary files a/app/src/main/res/raw/intro.mp4 and /dev/null differ
diff --git a/app/src/main/res/raw/intro.webm b/app/src/main/res/raw/intro.webm
new file mode 100644
index 0000000..afa2295
Binary files /dev/null and b/app/src/main/res/raw/intro.webm differ