mediaslider/src/main/res/layout/video_item.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/blackDark">
<com.google.android.exoplayer2.ui.PlayerView
android:id="@+id/video_view"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
</RelativeLayout>