splitter/Splitter-UI/Views/PreviewPane.axaml

<UserControl
    xmlns="https://github.com/avaloniaui"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:vm="clr-namespace:Splitter_UI.ViewModels"
    xmlns:local="clr-namespace:Splitter_UI.Views"
    x:Class="Splitter_UI.Views.PreviewPane"
    x:DataType="vm:PreviewPaneViewModel">

    <Border Background="#202020" Padding="10">
        <Grid RowDefinitions="*,Auto">

            <local:PreviewCanvas
                Grid.Row="0"
                Preview="{Binding Preview}"
                Sar="{Binding Sar}"
                Dar="{Binding Dar}" />

            <Grid Grid.Row="1"
                  ColumnDefinitions="Auto,*,Auto"
                  Margin="0,10,0,0">

                <Button Grid.Column="0"
                        HorizontalAlignment="Left"
                        Width="24" Height="24"
                        Padding="0"
                        Margin="0,0,5,0"
                        Command="{Binding Selected.StepBackwardCommand}">
                    <TextBlock FontFamily="{StaticResource FontAwesome}"
                               Text="&#xf048;"
                               FontSize="12"
                               VerticalAlignment="Center"
                               HorizontalAlignment="Center" />
                </Button>

                <Slider Grid.Column="1"
                        Minimum="0"
                        Maximum="{Binding Selected.DurationSeconds}"
                        Value="{Binding Selected.SliderLiveValue, Mode=TwoWay}"
                        Margin="5,0,5,0" />

                <Button Grid.Column="2"
                        HorizontalAlignment="Right"
                        Width="24" Height="24"
                        Padding="0"
                        Margin="5,0,0,0"
                        Command="{Binding Selected.StepForwardCommand}">
                    <TextBlock FontFamily="{StaticResource FontAwesome}"
                               Text="&#xf051;"
                               FontSize="12"
                               VerticalAlignment="Center"
                               HorizontalAlignment="Center" />
                </Button>

            </Grid>

        </Grid>
    </Border>
</UserControl>