LibreTube/app/src/main/res/layout/dialog_download.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"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:orientation="vertical"
    android:paddingHorizontal="20dp">

    <com.google.android.material.textfield.TextInputLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="5dp"
        android:layout_marginBottom="10dp"
        android:hint="@string/filename">

        <com.google.android.material.textfield.TextInputEditText
            android:id="@+id/fileName"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:inputType="text" />
    </com.google.android.material.textfield.TextInputLayout>

    <com.github.libretube.ui.views.DropdownMenu
        android:id="@+id/video_spinner"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        app:hint="@string/video"
        app:icon="@drawable/ic_video" />

    <com.github.libretube.ui.views.DropdownMenu
        android:id="@+id/audio_spinner"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        app:hint="@string/audio"
        app:icon="@drawable/ic_audio" />

    <com.github.libretube.ui.views.DropdownMenu
        android:id="@+id/subtitle_spinner"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        app:hint="@string/captions"
        app:icon="@drawable/ic_caption" />

</LinearLayout>