QuickLook/QuickLook.Plugin/QuickLook.Plugin.VideoViewer/ViewerPanel.xaml

<UserControl x:Class="QuickLook.Plugin.VideoViewer.ViewerPanel"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
             xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
             xmlns:fa="http://schemas.fontawesome.io/icons/"
             xmlns:vlc="clr-namespace:Meta.Vlc.Wpf;assembly=Meta.Vlc.Wpf"
             xmlns:local="clr-namespace:QuickLook.Plugin.VideoViewer"
             xmlns:glassLayer="clr-namespace:QuickLook.Controls.GlassLayer;assembly=QuickLook"
             mc:Ignorable="d"
             x:Name="viewerPanel"
             d:DesignHeight="450" d:DesignWidth="450">
    <Grid>
        <Grid.Resources>
            <ResourceDictionary>
                <local:BooleanToVisibilityHiddenConverter x:Key="BooleanToVisibilityHiddenConverter" />
                <ResourceDictionary.MergedDictionaries>
                    <ResourceDictionary Source="Styles.xaml" />
                </ResourceDictionary.MergedDictionaries>
            </ResourceDictionary>
        </Grid.Resources>

        <vlc:VlcPlayer x:Name="mediaElement" LibVlcPath="{Binding LibVlcPath, ElementName=viewerPanel}"
                       VlcOption="{Binding VlcOption, ElementName=viewerPanel}" />

        <Image>
            <Image.Style>
                <Style TargetType="Image">
                    <Setter Property="Source" Value="{Binding CoverArt, ElementName=viewerPanel}" />
                    <Setter Property="Visibility" Value="Collapsed" />
                    <Style.Triggers>
                        <DataTrigger Binding="{Binding HasVideo, ElementName=viewerPanel}" Value="False">
                            <Setter Property="Visibility" Value="Visible" />
                        </DataTrigger>
                        <DataTrigger
                            Binding="{Binding CoverArt.Length, ElementName=viewerPanel, FallbackValue=0, TargetNullValue=0}"
                            Value="0">
                            <Setter Property="Source" Value="Resources/compact-disc.png" />
                            <Setter Property="Margin" Value="50" />
                        </DataTrigger>
                    </Style.Triggers>
                </Style>
            </Image.Style>
        </Image>

        <Grid HorizontalAlignment="Stretch" VerticalAlignment="Bottom" Height="32">
            <glassLayer:GlassLayer BlurredElement="{Binding ElementName=mediaElement}" OverlayColor="#FF3B3B3B" />
            <DockPanel>
                <Button x:Name="buttonPlayPause" Style="{StaticResource CaptionButtonStyle}" DockPanel.Dock="Left">
                    <fa:ImageAwesome Foreground="{DynamicResource CaptionButtonIconForeground}">
                        <fa:ImageAwesome.Style>
                            <Style>
                                <Setter Property="fa:ImageAwesome.Icon" Value="Pause" />
                                <Style.Triggers>
                                    <DataTrigger Binding="{Binding IsPlaying, ElementName=viewerPanel}"
                                                 Value="False">
                                        <Setter Property="fa:ImageAwesome.Icon" Value="Play" />
                                    </DataTrigger>
                                </Style.Triggers>
                            </Style>
                        </fa:ImageAwesome.Style>
                    </fa:ImageAwesome>
                </Button>
                <Button x:Name="buttonMute" Style="{StaticResource CaptionButtonStyle}" DockPanel.Dock="Right">
                    <fa:ImageAwesome Icon="VolumeUp" Foreground="{DynamicResource CaptionButtonIconForeground}">
                        <fa:ImageAwesome.Style>
                            <Style TargetType="fa:ImageAwesome">
                                <Setter Property="Icon" Value="VolumeOff" />
                                <Style.Triggers>
                                    <DataTrigger Binding="{Binding IsMuted, ElementName=viewerPanel}"
                                                 Value="False">
                                        <Setter Property="Icon" Value="VolumeUp" />
                                    </DataTrigger>
                                </Style.Triggers>
                            </Style>
                        </fa:ImageAwesome.Style>
                    </fa:ImageAwesome>
                </Button>
                <Button Width="Auto" Style="{StaticResource CaptionButtonStyle}" DockPanel.Dock="Right">
                    <TextBlock DockPanel.Dock="Right" VerticalAlignment="Center" FontSize="11"
                               Foreground="{DynamicResource CaptionButtonIconForeground}"
                               Text="{Binding Time, StringFormat=hh\\:mm\\:ss, ElementName=mediaElement}"/>
                </Button>
                <Slider x:Name="sliderProgress" Style="{StaticResource PositionSliderStyle}"
                        SmallChange="0.00001" LargeChange="0.01" Maximum="1"
                        Value="{Binding Position, ElementName=mediaElement}" />
            </DockPanel>
        </Grid>
    </Grid>
</UserControl>