Tengo un MediaElement que reside dentro de la placa de datos de flipview, quiero acceder a ese MediaElement llamado "video" en el código que está detrás para poder asignar propiedades como reproducir, pausar, etc. A través de los botones, aquí está el código de lo que soy. Intentando hacer :

    <FlipView
    x:Name="flipView"
    AutomationProperties.AutomationId="ItemsFlipView"
    AutomationProperties.Name="Item Details"
    TabIndex="1"
    Grid.RowSpan="2"
    ItemsSource="{Binding Source={StaticResource itemsViewSource}}">

    <FlipView.ItemContainerStyle>
        <Style TargetType="FlipViewItem">
            <Setter Property="Margin" Value="0,137,0,0"/>
        </Style>
    </FlipView.ItemContainerStyle>

    <FlipView.ItemTemplate>
        <DataTemplate>
            <UserControl Loaded="StartLayoutUpdates" Unloaded="StopLayoutUpdates">
                <ScrollViewer x:Name="scrollViewer" Style="{StaticResource VerticalScrollViewerStyle}" Grid.Row="1">
                    <Grid Margin="120,0,20,20">
                        <Grid.ColumnDefinitions>
                            <ColumnDefinition Width="400" />
                            <ColumnDefinition Width="40" />
                            <ColumnDefinition Width="360" />
                            <ColumnDefinition Width="40" />
                            <ColumnDefinition />
                        </Grid.ColumnDefinitions>
                        <Border BorderBrush="Black" BorderThickness="1" Width="350" HorizontalAlignment="Left" Grid.Row="0">
                            <MediaElement x:Name="Video" AutomationProperties.Name="Video" Source="/Assets/Big_Buck_Bunny.mp4" HorizontalAlignment="Center" VerticalAlignment="Stretch" Height="250" Width="350" AutoPlay="True" IsLooping="True" />
                        </Border>
                        <Border BorderBrush="Black" BorderThickness="1" Height="65" Width="350" HorizontalAlignment="Left" Grid.Row="1">
                            <StackPanel Orientation="Horizontal" HorizontalAlignment="Center" VerticalAlignment="Center">
                                <Button x:Name="playButton" Margin="0,0" Click="playButton_Click" Style="{StaticResource PlayAppBarButtonStyle}" HorizontalAlignment="Center" VerticalAlignment="Center"/>
                                <Button x:Name="pauseButton" Margin="0,0" Click="pauseButton_Click" Style="{StaticResource PauseAppBarButtonStyle}" HorizontalAlignment="Center" VerticalAlignment="Center"/>
                            </StackPanel>
                        </Border>
                    </Grid>
                </ScrollViewer>
            </UserControl>
        </DataTemplate>
    </FlipView.ItemTemplate>
</FlipView>

¿Cómo logro lo previsto?