LibreTube/app/src/main/res/layout/fragment_player.xml

<?xml version="1.0" encoding="utf-8"?>
<com.github.libretube.views.SingleViewTouchableMotionLayout 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:id="@+id/playerMotionLayout"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    app:layoutDescription="@xml/player_scene"
    tools:context=".fragments.PlayerFragment">

    <ScrollView
        android:id="@+id/player_scrollView"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:background="?android:attr/colorBackground"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.5"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/main_container">

        <LinearLayout
            android:id="@+id/linLayout"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:animateLayoutChanges="true"
            android:orientation="vertical">

            <RelativeLayout
                android:id="@+id/player_title_layout"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_marginTop="5dp"
                android:orientation="horizontal">

                <TextView
                    android:id="@+id/player_title"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_centerVertical="true"
                    android:layout_marginStart="10dp"
                    android:layout_marginTop="10dp"
                    android:layout_marginEnd="30dp"
                    android:text="Video Title"
                    android:textSize="18sp" />


                <ImageView
                    android:id="@+id/player_description_arrow"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_alignParentEnd="true"
                    android:layout_centerInParent="true"
                    android:layout_marginStart="8dp"
                    android:layout_marginEnd="8dp"
                    android:src="@drawable/ic_arrow_down" />

            </RelativeLayout>

            <LinearLayout
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_marginHorizontal="10dp"
                android:orientation="horizontal">

                <TextView
                    android:id="@+id/player_views_info"
                    android:layout_width="0dp"
                    android:layout_height="wrap_content"
                    android:layout_weight="1"
                    android:text="10M views    2 days ago " />

                <LinearLayout
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_marginStart="3dp"
                    android:layout_marginTop="2dp">

                    <ImageView
                        android:layout_width="12dp"
                        android:layout_height="12dp"
                        android:layout_gravity="center"
                        android:src="@drawable/ic_like" />

                    <TextView
                        android:id="@+id/textLike"
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:layout_marginHorizontal="5dp"
                        android:text="4.2K" />

                    <ImageView
                        android:layout_width="12dp"
                        android:layout_height="12dp"
                        android:layout_gravity="center"
                        android:layout_marginStart="5dp"
                        android:rotation="180"
                        android:src="@drawable/ic_like" />

                    <TextView
                        android:id="@+id/textDislike"
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:layout_marginHorizontal="5dp"
                        android:text="1.3K" />

                </LinearLayout>

            </LinearLayout>

            <LinearLayout
                android:id="@+id/desc_linLayout"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:orientation="vertical"
                android:visibility="gone">

                <androidx.recyclerview.widget.RecyclerView
                    android:id="@+id/chapters_recView"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:layout_marginHorizontal="3dp"
                    android:layout_marginTop="20dp"
                    android:nestedScrollingEnabled="false"
                    android:visibility="gone" />

                <TextView
                    android:id="@+id/player_description"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:autoLink="web"
                    android:padding="8dp"
                    android:textIsSelectable="true"
                    android:textSize="14sp" />

            </LinearLayout>

            <com.google.android.material.card.MaterialCardView
                style="@style/Widget.Material3.CardView.Elevated"
                android:layout_width="match_parent"
                android:layout_height="80dp"
                android:layout_margin="17dp"
                app:cardCornerRadius="27dp">

                <LinearLayout
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:layout_gravity="center"
                    android:layout_marginLeft="10dp"
                    android:layout_marginRight="10dp"
                    android:gravity="center"
                    android:orientation="horizontal">

                    <LinearLayout
                        android:id="@+id/relPlayer_share"
                        style="@style/PlayerActionsLayout">

                        <ImageView
                            android:layout_width="24dp"
                            android:layout_height="25dp"
                            android:src="@drawable/ic_share" />

                        <TextView
                            android:layout_width="wrap_content"
                            android:layout_height="wrap_content"
                            android:text="@string/share" />
                    </LinearLayout>

                    <LinearLayout
                        android:id="@+id/relPlayer_download"
                        style="@style/PlayerActionsLayout">

                        <ImageView
                            android:layout_width="24dp"
                            android:layout_height="25dp"
                            android:src="@drawable/ic_download" />

                        <TextView
                            android:layout_width="wrap_content"
                            android:layout_height="wrap_content"
                            android:autoSizeTextType="uniform"
                            android:gravity="center"
                            android:maxLines="1"
                            android:text="@string/download" />
                    </LinearLayout>

                    <LinearLayout
                        android:id="@+id/relPlayer_open"
                        style="@style/PlayerActionsLayout">

                        <ImageView
                            android:layout_width="24dp"
                            android:layout_height="25dp"
                            android:padding="2dp"
                            android:src="@drawable/ic_open" />

                        <TextView
                            android:layout_width="wrap_content"
                            android:layout_height="wrap_content"
                            android:gravity="center"
                            android:text="@string/open" />
                    </LinearLayout>

                    <LinearLayout
                        android:id="@+id/relPlayer_background"
                        style="@style/PlayerActionsLayout">

                        <ImageView
                            android:layout_width="24dp"
                            android:layout_height="25dp"
                            android:src="@drawable/ic_headphones" />

                        <TextView
                            android:layout_width="wrap_content"
                            android:layout_height="wrap_content"
                            android:text="@string/audio" />
                    </LinearLayout>

                    <LinearLayout
                        android:id="@+id/relPlayer_save"
                        style="@style/PlayerActionsLayout">

                        <ImageView
                            android:layout_width="24dp"
                            android:layout_height="25dp"
                            android:src="@drawable/ic_save" />

                        <TextView
                            android:layout_width="wrap_content"
                            android:layout_height="wrap_content"
                            android:text="@string/save" />
                    </LinearLayout>

                </LinearLayout>

            </com.google.android.material.card.MaterialCardView>

            <RelativeLayout
                android:id="@+id/player_channel"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_marginStart="8dp"
                android:layout_marginTop="15dp"
                android:layout_marginEnd="8dp"
                android:layout_marginBottom="15dp"
                android:background="?android:attr/selectableItemBackground"
                android:paddingLeft="8dp"
                android:paddingRight="8dp">

                <de.hdodenhof.circleimageview.CircleImageView
                    android:id="@+id/player_channelImage"
                    android:layout_width="40dp"
                    android:layout_height="40dp"
                    android:layout_centerVertical="true"
                    android:layout_marginEnd="4dp" />

                <TextView
                    android:id="@+id/player_channelName"
                    android:layout_width="0dp"
                    android:layout_height="wrap_content"
                    android:layout_centerVertical="true"
                    android:layout_marginStart="5dp"
                    android:layout_toStartOf="@+id/player_subscribe"
                    android:layout_toEndOf="@+id/player_channelImage"
                    android:ellipsize="end"
                    android:maxLines="1"
                    android:text=""
                    android:textSize="15sp" />


                <com.google.android.material.button.MaterialButton
                    android:id="@+id/player_subscribe"
                    style="@style/Widget.Material3.Button.ElevatedButton"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_alignParentEnd="true"
                    android:layout_centerVertical="true"
                    android:drawableLeft="@drawable/ic_bell"
                    android:drawableTint="?android:attr/textColorPrimary"
                    android:text="@string/subscribe"
                    android:textColor="?android:attr/textColorPrimary"
                    android:textSize="12sp"
                    app:cornerRadius="11dp" />
            </RelativeLayout>


            <RelativeLayout
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:animateLayoutChanges="true"
                android:descendantFocusability="blocksDescendants">

                <com.google.android.material.card.MaterialCardView
                    android:id="@+id/comments_toggle"
                    style="@style/Widget.Material3.CardView.Elevated"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:layout_marginStart="16dp"
                    android:layout_marginTop="16dp"
                    android:layout_marginEnd="16dp"
                    android:layout_marginBottom="16dp"
                    app:cardCornerRadius="18dp">

                    <LinearLayout
                        android:layout_width="match_parent"
                        android:layout_height="match_parent"
                        android:layout_margin="8dp"
                        android:orientation="horizontal">

                        <TextView
                            android:id="@+id/commentsToggle_textView"
                            android:layout_width="0dp"
                            android:layout_height="wrap_content"
                            android:layout_marginStart="8dp"
                            android:layout_weight="1"
                            android:text="@string/comments"
                            android:textSize="17sp" />

                        <ImageView
                            android:id="@+id/commentsToggle_imageView"
                            android:layout_width="wrap_content"
                            android:layout_height="wrap_content"
                            android:layout_gravity="center"
                            android:layout_marginEnd="3dp"
                            android:src="@drawable/ic_arrow_up_down" />

                    </LinearLayout>

                </com.google.android.material.card.MaterialCardView>

                <androidx.recyclerview.widget.RecyclerView
                    android:id="@+id/comments_recView"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:layout_below="@id/comments_toggle"
                    android:layout_marginTop="10dp"
                    android:layout_marginBottom="10dp"
                    android:nestedScrollingEnabled="false"
                    android:visibility="gone" />

                <androidx.recyclerview.widget.RecyclerView
                    android:id="@+id/related_rec_view"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:layout_below="@id/comments_recView"
                    android:layout_marginStart="10dp"
                    android:layout_marginTop="10dp"
                    android:layout_marginEnd="10dp"
                    android:layout_marginBottom="10dp"
                    android:nestedScrollingEnabled="false" />
            </RelativeLayout>

        </LinearLayout>

    </ScrollView>

    <androidx.constraintlayout.widget.ConstraintLayout
        android:id="@+id/main_container"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:background="?attr/colorSurface"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHeight_percent="0.275"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <com.github.libretube.views.CustomExoPlayerView
        android:id="@+id/player"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="@android:color/black"
        app:layout_constraintBottom_toBottomOf="@id/main_container"
        app:layout_constraintStart_toStartOf="@id/main_container"
        app:layout_constraintTop_toTopOf="@id/main_container"
        app:show_buffering="when_playing">

        <!-- double tap to rewind/forward overlay -->
        <LinearLayout
            android:id="@+id/doubleTapOverlayLL"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_marginTop="70dp"
            android:layout_marginBottom="60dp">

            <!-- double tap rewind btn -->
            <FrameLayout
                android:id="@+id/rewindFL"
                android:layout_width="0dp"
                android:layout_height="match_parent"
                android:layout_weight=".35">

                <ImageButton
                    android:id="@+id/rewindBTN"
                    android:layout_width="match_parent"
                    android:layout_height="match_parent"
                    android:background="?android:selectableItemBackgroundBorderless"
                    android:clickable="false"
                    android:src="@drawable/ic_rewind"
                    android:visibility="invisible"
                    app:tint="@android:color/white" />

            </FrameLayout>

            <!-- place holder for the center controls -->
            <LinearLayout
                android:layout_width="0dp"
                android:layout_height="match_parent"
                android:layout_weight=".30" />

            <!-- double tap forward btn -->
            <FrameLayout
                android:id="@+id/forwardFL"
                android:layout_width="0dp"
                android:layout_height="match_parent"
                android:layout_weight=".35">

                <ImageButton
                    android:id="@+id/forwardBTN"
                    android:layout_width="match_parent"
                    android:layout_height="match_parent"
                    android:background="?android:selectableItemBackgroundBorderless"
                    android:clickable="false"
                    android:src="@drawable/ic_forward"
                    android:visibility="invisible"
                    app:tint="@android:color/white" />

            </FrameLayout>

        </LinearLayout>

    </com.github.libretube.views.CustomExoPlayerView>

    <ImageView
        android:id="@+id/close_imageView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginEnd="16dp"
        android:alpha="0"
        android:src="@drawable/ic_close"
        android:visibility="gone"
        app:layout_constraintBottom_toBottomOf="@id/main_container"
        app:layout_constraintEnd_toEndOf="@id/main_container"
        app:layout_constraintTop_toTopOf="@id/main_container" />

    <ImageView
        android:id="@+id/play_imageView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginEnd="24dp"
        android:alpha="0"
        android:src="@drawable/ic_play"
        android:visibility="gone"
        app:layout_constraintBottom_toBottomOf="@+id/close_imageView"
        app:layout_constraintEnd_toStartOf="@+id/close_imageView"
        app:layout_constraintTop_toTopOf="@+id/close_imageView" />

    <TextView
        android:id="@+id/title_textView"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginStart="8dp"
        android:layout_marginEnd="12dp"
        android:alpha="0"
        android:ellipsize="end"
        android:maxLines="1"
        android:visibility="gone"
        app:layout_constraintBottom_toBottomOf="@+id/play_imageView"
        app:layout_constraintEnd_toStartOf="@+id/play_imageView"
        app:layout_constraintStart_toEndOf="@+id/player"
        app:layout_constraintTop_toTopOf="@+id/play_imageView" />

</com.github.libretube.views.SingleViewTouchableMotionLayout>