session-android/res/layout/thumbnail_view.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
             xmlns:app="http://schemas.android.com/apk/res-auto"
             xmlns:tools="http://schemas.android.com/tools"
              android:orientation="vertical"
             android:layout_width="wrap_content"
             android:layout_height="210dp">

    <org.thoughtcrime.securesms.components.ForegroundImageView
        android:id="@+id/image_view"
        android:layout_width="wrap_content"
        android:layout_height="match_parent"
        android:visibility="gone"
        android:scaleType="centerCrop"
        android:adjustViewBounds="true"
        android:contentDescription="@string/conversation_item__mms_image_description"
        app:riv_corner_radius="@dimen/message_bubble_corner_radius"
        app:riv_border_width="@dimen/media_bubble_border_width"
        tools:src="@drawable/ic_video_light"
        tools:visibility="visible" />

</LinearLayout>