ExoPlayer: remove redundant spaces between playback buttons and timeline row

I have custom ExoPlayer control bar. It takes quite a lot of space and I want to make it a bit narrower.

Here is what I want to remove/narrower (highlighted with red):

As you see I managed to remove some spaces already by playing around with paddingTop, layout_marginTop, layout_height parameters (it used to be even larger).

But it is not enough, it still takes a lot of space.

Question: How to narrower empty areas marked on the picture?

Here is what my custom exo_player_control_view.xml looks like (removed most of the elements for the purpose of simplicity):

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_gravity="bottom"
    android:background="#CC000000"
    android:layoutDirection="ltr"
    android:orientation="vertical">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:gravity="center"
        android:orientation="horizontal">
        <ImageButton
            android:id="@id/exo_play"
            style="@style/ExoMediaButton.Play" />
    </LinearLayout>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:gravity="center_vertical"
        android:orientation="horizontal">
        <com.google.android.exoplayer2.ui.DefaultTimeBar
            android:id="@id/exo_progress"
            android:layout_width="0dp"
            android:layout_height="18dp"
            android:layout_weight="1" />
    </LinearLayout>

</LinearLayout>

Note: I fully understand that by narrowing those areas I might make the control panel less usable. It is ok. I want at least to have an ability to change them and test how it works.

from ExoPlayer: remove redundant spaces between playback buttons and timeline row