CardView - media 16:9 and supporting text

item_media16x9_supportingtext.xml

<android.support.v7.widget.CardView
    xmlns:android="http://schemas.android.com/apk/res/android"
    style="@style/CardView.Light"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_marginTop="8dp"
    android:layout_marginStart="8dp"
    android:layout_marginEnd="8dp">

    <android.support.constraint.ConstraintLayout
        xmlns:app="http://schemas.android.com/apk/res-auto"
        android:layout_width="match_parent"
        android:layout_height="wrap_content">

        <ImageView
            android:id="@+id/media_image"
            android:layout_width="0dp"
            android:layout_height="0dp"
            android:scaleType="centerCrop"
            app:layout_constraintDimensionRatio="H,16:9"
            app:layout_constraintTop_toTopOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintBottom_toTopOf="@+id/supporting_text"
            app:layout_constraintVertical_chainStyle="packed" />

        <TextView
            android:id="@+id/supporting_text"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_marginTop="16dp"
            android:layout_marginStart="16dp"
            android:layout_marginEnd="16dp"
            android:layout_marginBottom="16dp"
            android:textAppearance="@style/TextAppearance.AppCompat.Body1"
            android:textColor="#DE000000"
            android:lineSpacingExtra="8dp"
            app:layout_constraintTop_toBottomOf="@+id/media_image"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintBottom_toBottomOf="parent"/>

    </android.support.constraint.ConstraintLayout>

</android.support.v7.widget.CardView>