nextcloud-android/res/layout/video_layout.xml

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout	xmlns:android="http://schemas.android.com/apk/res/android"
				android:layout_width="match_parent"
				android:layout_height="match_parent" >

	<VideoView  android:id="@+id/videoPlayer"
				android:layout_width="wrap_content"
				android:layout_height="wrap_content"  
				android:layout_gravity="center" />
	
</FrameLayout>