Remove additional space around '×'

QuickLook.Plugin/QuickLook.Plugin.ImageViewer/Plugin.cs

@@ -45,7 +45,7 @@ namespace QuickLook.Plugin.ImageViewer
             _ip = new ImagePanel(path);
 
             context.ViewerContent = _ip;
-            context.Title = $"{Path.GetFileName(path)} ({_imageSize.Width} × {_imageSize.Height})";
+            context.Title = $"{Path.GetFileName(path)} ({_imageSize.Width}×{_imageSize.Height})";
 
             context.IsBusy = false;
         }

QuickLook.Plugin/QuickLook.Plugin.VideoViewer/DoubleToHMSConverter.cs

@@ -0,0 +1,43 @@
+using System;
+using System.Globalization;
+using System.Windows;
+using System.Windows.Data;
+
+namespace QuickLook.Plugin.VideoViewer
+{
+    public sealed class DecimalToTimeSpanConverter : DependencyObject, IValueConverter
+    {
+        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            if (value == null)
+                return "00:00:00";
+
+            var time = TimeSpan.FromSeconds((double) (decimal) value);
+
+            return time.ToString(@"hh\:mm\:ss");
+        }
+
+        object IValueConverter.ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            throw new NotImplementedException();
+        }
+    }
+
+    public sealed class DoubleToTimeSpanConverter : DependencyObject, IValueConverter
+    {
+        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            if (value == null)
+                return "00:00:00";
+
+            var time = TimeSpan.FromSeconds((double) value);
+
+            return time.ToString(@"hh\:mm\:ss");
+        }
+
+        object IValueConverter.ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            throw new NotImplementedException();
+        }
+    }
+}

QuickLook.Plugin/QuickLook.Plugin.VideoViewer/HorizontalSliderStyle.xaml

@@ -0,0 +1,75 @@
+<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
+    <Style x:Key="SliderRepeatButton" TargetType="RepeatButton">
+        <Setter Property="SnapsToDevicePixels" Value="true" />
+        <Setter Property="OverridesDefaultStyle" Value="true" />
+        <Setter Property="IsTabStop" Value="false" />
+        <Setter Property="Focusable" Value="false" />
+        <Setter Property="Template">
+            <Setter.Value>
+                <ControlTemplate TargetType="RepeatButton">
+                    <Border BorderThickness="1" BorderBrush="Gray" Background="Gray" Height="3" />
+                </ControlTemplate>
+            </Setter.Value>
+        </Setter>
+    </Style>
+
+    <Style x:Key="SliderRepeatButton1" TargetType="RepeatButton">
+        <Setter Property="SnapsToDevicePixels" Value="true" />
+        <Setter Property="OverridesDefaultStyle" Value="true" />
+        <Setter Property="Template">
+            <Setter.Value>
+                <ControlTemplate TargetType="RepeatButton">
+                    <Border SnapsToDevicePixels="True" Background="Gray" BorderThickness="1" BorderBrush="Gray"
+                            Height="3" />
+                </ControlTemplate>
+            </Setter.Value>
+        </Setter>
+    </Style>
+
+    <Style x:Key="SliderThumb" TargetType="Thumb">
+        <Setter Property="SnapsToDevicePixels" Value="true" />
+        <Setter Property="OverridesDefaultStyle" Value="true" />
+        <Setter Property="Template">
+            <Setter.Value>
+                <ControlTemplate TargetType="Thumb">
+                    <Ellipse Height="12" Width="12" Fill="Gray" />
+                </ControlTemplate>
+            </Setter.Value>
+        </Setter>
+    </Style>
+
+    <ControlTemplate x:Key="Slider" TargetType="Slider">
+        <Grid>
+            <Grid.RowDefinitions>
+                <RowDefinition Height="Auto" />
+                <RowDefinition Height="Auto" MinHeight="{TemplateBinding MinHeight}" />
+                <RowDefinition Height="Auto" />
+            </Grid.RowDefinitions>
+            <Track Grid.Row="1" x:Name="PART_Track">
+                <Track.DecreaseRepeatButton>
+                    <RepeatButton Style="{StaticResource SliderRepeatButton1}" Command="Slider.DecreaseLarge" />
+                </Track.DecreaseRepeatButton>
+                <Track.Thumb>
+                    <Thumb Style="{StaticResource SliderThumb}" />
+                </Track.Thumb>
+                <Track.IncreaseRepeatButton>
+                    <RepeatButton Style="{StaticResource SliderRepeatButton}" Command="Slider.IncreaseLarge" />
+                </Track.IncreaseRepeatButton>
+            </Track>
+        </Grid>
+    </ControlTemplate>
+
+    <Style x:Key="HorizontalSlider" TargetType="Slider">
+        <Setter Property="Focusable" Value="False" />
+        <Setter Property="SnapsToDevicePixels" Value="true" />
+        <Setter Property="OverridesDefaultStyle" Value="true" />
+        <Style.Triggers>
+            <Trigger Property="Orientation" Value="Horizontal">
+                <Setter Property="MinHeight" Value="10" />
+                <Setter Property="MinWidth" Value="104" />
+                <Setter Property="Template" Value="{StaticResource Slider}" />
+            </Trigger>
+        </Style.Triggers>
+    </Style>
+</ResourceDictionary>

QuickLook.Plugin/QuickLook.Plugin.VideoViewer/PluginInterface.cs

@@ -0,0 +1,60 @@
+using System;
+using System.IO;
+using System.Linq;
+using System.Windows;
+using Unosquare.FFmpegMediaElement;
+
+namespace QuickLook.Plugin.VideoViewer
+{
+    public class PluginInterface : IViewer
+    {
+        private ViewerPanel _vp;
+
+        public int Priority => int.MaxValue;
+
+        public bool CanHandle(string path)
+        {
+            if (Directory.Exists(path))
+                return false;
+
+            var formats = new[]
+            {
+                ".3g2", ".3gp", ".3gp2", ".3gpp", ".amv", ".asf", ".asf", ".avi", ".flv", ".m2ts", ".m4v", ".mkv",
+                ".mov", ".mp4", ".mp4v", ".mpeg", ".mpg", ".ogv", ".qt", ".vob", ".webm", ".wmv"
+            };
+
+            if (formats.Contains(Path.GetExtension(path).ToLower()))
+                return true;
+
+            return false;
+        }
+
+        public void Prepare(string path, ContextObject context)
+        {
+            using (var element = new MediaElement {Source = new Uri(path)})
+            {
+                context.SetPreferredSizeFit(new Size(element.NaturalVideoWidth, element.NaturalVideoHeight), 0.6);
+                context.PreferredSize = new Size(context.PreferredSize.Width,
+                    context.PreferredSize.Height + 26); // add control bar
+            }
+        }
+
+        public void View(string path, ContextObject context)
+        {
+            _vp = new ViewerPanel();
+
+            context.ViewerContent = _vp;
+
+            _vp.LoadAndPlay(path);
+
+            context.Title =
+                $"{Path.GetFileName(path)} ({_vp.mediaElement.NaturalVideoWidth}×{_vp.mediaElement.NaturalVideoHeight})";
+            context.IsBusy = false;
+        }
+
+        public void Dispose()
+        {
+            _vp?.Dispose();
+        }
+    }
+}

QuickLook.Plugin/QuickLook.Plugin.VideoViewer/Properties/AssemblyInfo.cs

@@ -0,0 +1,53 @@
+using System.Reflection;
+using System.Runtime.InteropServices;
+using System.Windows;
+
+// General Information about an assembly is controlled through the following
+// set of attributes. Change these attribute values to modify the information
+// associated with an assembly.
+[assembly: AssemblyTitle("QuickLook.Plugin.VideoViewer")]
+[assembly: AssemblyDescription("")]
+[assembly: AssemblyConfiguration("")]
+[assembly: AssemblyCompany("")]
+[assembly: AssemblyProduct("QuickLook.Plugin.VideoViewer")]
+[assembly: AssemblyCopyright("Copyright ©  2017")]
+[assembly: AssemblyTrademark("")]
+[assembly: AssemblyCulture("")]
+
+// Setting ComVisible to false makes the types in this assembly not visible
+// to COM components.  If you need to access a type in this assembly from
+// COM, set the ComVisible attribute to true on that type.
+[assembly: ComVisible(false)]
+
+//In order to begin building localizable applications, set
+//<UICulture>CultureYouAreCodingWith</UICulture> in your .csproj file
+//inside a <PropertyGroup>.  For example, if you are using US english
+//in your source files, set the <UICulture> to en-US.  Then uncomment
+//the NeutralResourceLanguage attribute below.  Update the "en-US" in
+//the line below to match the UICulture setting in the project file.
+
+//[assembly: NeutralResourcesLanguage("en-US", UltimateResourceFallbackLocation.Satellite)]
+
+
+[assembly: ThemeInfo(
+    ResourceDictionaryLocation.None, //where theme specific resource dictionaries are located
+    //(used if a resource is not found in the page,
+    // or application resource dictionaries)
+    ResourceDictionaryLocation.SourceAssembly //where the generic resource dictionary is located
+    //(used if a resource is not found in the page,
+    // app, or any theme specific resource dictionaries)
+)]
+
+
+// Version information for an assembly consists of the following four values:
+//
+//      Major Version
+//      Minor Version
+//      Build Number
+//      Revision
+//
+// You can specify all the values or you can default the Build and Revision Numbers
+// by using the '*' as shown below:
+// [assembly: AssemblyVersion("1.0.*")]
+[assembly: AssemblyVersion("1.0.0.0")]
+[assembly: AssemblyFileVersion("1.0.0.0")]

QuickLook.Plugin/QuickLook.Plugin.VideoViewer/Properties/Resources.Designer.cs

@@ -0,0 +1,62 @@
+//------------------------------------------------------------------------------
+// <auto-generated>
+//     This code was generated by a tool.
+//     Runtime Version:4.0.30319.42000
+//
+//     Changes to this file may cause incorrect behavior and will be lost if
+//     the code is regenerated.
+// </auto-generated>
+//------------------------------------------------------------------------------
+
+namespace QuickLook.Plugin.VideoViewer.Properties {
+    
+    
+    /// <summary>
+    ///   A strongly-typed resource class, for looking up localized strings, etc.
+    /// </summary>
+    // This class was auto-generated by the StronglyTypedResourceBuilder
+    // class via a tool like ResGen or Visual Studio.
+    // To add or remove a member, edit your .ResX file then rerun ResGen
+    // with the /str option, or rebuild your VS project.
+    [global::System.CodeDom.Compiler.GeneratedCodeAttribute("System.Resources.Tools.StronglyTypedResourceBuilder", "4.0.0.0")]
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
+    [global::System.Runtime.CompilerServices.CompilerGeneratedAttribute()]
+    internal class Resources {
+        
+        private static global::System.Resources.ResourceManager resourceMan;
+        
+        private static global::System.Globalization.CultureInfo resourceCulture;
+        
+        [global::System.Diagnostics.CodeAnalysis.SuppressMessageAttribute("Microsoft.Performance", "CA1811:AvoidUncalledPrivateCode")]
+        internal Resources() {
+        }
+        
+        /// <summary>
+        ///   Returns the cached ResourceManager instance used by this class.
+        /// </summary>
+        [global::System.ComponentModel.EditorBrowsableAttribute(global::System.ComponentModel.EditorBrowsableState.Advanced)]
+        internal static global::System.Resources.ResourceManager ResourceManager {
+            get {
+                if ((resourceMan == null)) {
+                    global::System.Resources.ResourceManager temp = new global::System.Resources.ResourceManager("QuickLook.Plugin.VideoViewer.Properties.Resources", typeof(Resources).Assembly);
+                    resourceMan = temp;
+                }
+                return resourceMan;
+            }
+        }
+        
+        /// <summary>
+        ///   Overrides the current thread's CurrentUICulture property for all
+        ///   resource lookups using this strongly typed resource class.
+        /// </summary>
+        [global::System.ComponentModel.EditorBrowsableAttribute(global::System.ComponentModel.EditorBrowsableState.Advanced)]
+        internal static global::System.Globalization.CultureInfo Culture {
+            get {
+                return resourceCulture;
+            }
+            set {
+                resourceCulture = value;
+            }
+        }
+    }
+}

QuickLook.Plugin/QuickLook.Plugin.VideoViewer/Properties/Resources.resx

@@ -0,0 +1,117 @@
+<?xml version="1.0" encoding="utf-8"?>
+<root>
+  <!-- 
+    Microsoft ResX Schema 
+    
+    Version 2.0
+    
+    The primary goals of this format is to allow a simple XML format 
+    that is mostly human readable. The generation and parsing of the 
+    various data types are done through the TypeConverter classes 
+    associated with the data types.
+    
+    Example:
+    
+    ... ado.net/XML headers & schema ...
+    <resheader name="resmimetype">text/microsoft-resx</resheader>
+    <resheader name="version">2.0</resheader>
+    <resheader name="reader">System.Resources.ResXResourceReader, System.Windows.Forms, ...</resheader>
+    <resheader name="writer">System.Resources.ResXResourceWriter, System.Windows.Forms, ...</resheader>
+    <data name="Name1"><value>this is my long string</value><comment>this is a comment</comment></data>
+    <data name="Color1" type="System.Drawing.Color, System.Drawing">Blue</data>
+    <data name="Bitmap1" mimetype="application/x-microsoft.net.object.binary.base64">
+        <value>[base64 mime encoded serialized .NET Framework object]</value>
+    </data>
+    <data name="Icon1" type="System.Drawing.Icon, System.Drawing" mimetype="application/x-microsoft.net.object.bytearray.base64">
+        <value>[base64 mime encoded string representing a byte array form of the .NET Framework object]</value>
+        <comment>This is a comment</comment>
+    </data>
+                
+    There are any number of "resheader" rows that contain simple 
+    name/value pairs.
+    
+    Each data row contains a name, and value. The row also contains a 
+    type or mimetype. Type corresponds to a .NET class that support 
+    text/value conversion through the TypeConverter architecture. 
+    Classes that don't support this are serialized and stored with the 
+    mimetype set.
+    
+    The mimetype is used for serialized objects, and tells the 
+    ResXResourceReader how to depersist the object. This is currently not 
+    extensible. For a given mimetype the value must be set accordingly:
+    
+    Note - application/x-microsoft.net.object.binary.base64 is the format 
+    that the ResXResourceWriter will generate, however the reader can 
+    read any of the formats listed below.
+    
+    mimetype: application/x-microsoft.net.object.binary.base64
+    value   : The object must be serialized with 
+            : System.Serialization.Formatters.Binary.BinaryFormatter
+            : and then encoded with base64 encoding.
+    
+    mimetype: application/x-microsoft.net.object.soap.base64
+    value   : The object must be serialized with 
+            : System.Runtime.Serialization.Formatters.Soap.SoapFormatter
+            : and then encoded with base64 encoding.
+
+    mimetype: application/x-microsoft.net.object.bytearray.base64
+    value   : The object must be serialized into a byte array 
+            : using a System.ComponentModel.TypeConverter
+            : and then encoded with base64 encoding.
+    -->
+  <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
+    <xsd:element name="root" msdata:IsDataSet="true">
+      <xsd:complexType>
+        <xsd:choice maxOccurs="unbounded">
+          <xsd:element name="metadata">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" />
+              <xsd:attribute name="type" type="xsd:string" />
+              <xsd:attribute name="mimetype" type="xsd:string" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="assembly">
+            <xsd:complexType>
+              <xsd:attribute name="alias" type="xsd:string" />
+              <xsd:attribute name="name" type="xsd:string" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="data">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+                <xsd:element name="comment" type="xsd:string" minOccurs="0" msdata:Ordinal="2" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" msdata:Ordinal="1" />
+              <xsd:attribute name="type" type="xsd:string" msdata:Ordinal="3" />
+              <xsd:attribute name="mimetype" type="xsd:string" msdata:Ordinal="4" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="resheader">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" />
+            </xsd:complexType>
+          </xsd:element>
+        </xsd:choice>
+      </xsd:complexType>
+    </xsd:element>
+  </xsd:schema>
+  <resheader name="resmimetype">
+    <value>text/microsoft-resx</value>
+  </resheader>
+  <resheader name="version">
+    <value>2.0</value>
+  </resheader>
+  <resheader name="reader">
+    <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <resheader name="writer">
+    <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+</root>

QuickLook.Plugin/QuickLook.Plugin.VideoViewer/Properties/Settings.Designer.cs

@@ -0,0 +1,26 @@
+//------------------------------------------------------------------------------
+// <auto-generated>
+//     This code was generated by a tool.
+//     Runtime Version:4.0.30319.42000
+//
+//     Changes to this file may cause incorrect behavior and will be lost if
+//     the code is regenerated.
+// </auto-generated>
+//------------------------------------------------------------------------------
+
+namespace QuickLook.Plugin.VideoViewer.Properties {
+    
+    
+    [global::System.Runtime.CompilerServices.CompilerGeneratedAttribute()]
+    [global::System.CodeDom.Compiler.GeneratedCodeAttribute("Microsoft.VisualStudio.Editors.SettingsDesigner.SettingsSingleFileGenerator", "15.1.0.0")]
+    internal sealed partial class Settings : global::System.Configuration.ApplicationSettingsBase {
+        
+        private static Settings defaultInstance = ((Settings)(global::System.Configuration.ApplicationSettingsBase.Synchronized(new Settings())));
+        
+        public static Settings Default {
+            get {
+                return defaultInstance;
+            }
+        }
+    }
+}

QuickLook.Plugin/QuickLook.Plugin.VideoViewer/Properties/Settings.settings

@@ -0,0 +1,8 @@
+<?xml version='1.0' encoding='utf-8'?>
+
+<SettingsFile xmlns="uri:settings" CurrentProfile="(Default)">
+  <Profiles>
+    <Profile Name="(Default)" />
+  </Profiles>
+  <Settings />
+</SettingsFile>

QuickLook.Plugin/QuickLook.Plugin.VideoViewer/QuickLook.Plugin.VideoViewer.csproj

@@ -0,0 +1,102 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <ProjectGuid>{1B746D92-49A5-4A37-9D75-DCC490393290}</ProjectGuid>
+    <OutputType>library</OutputType>
+    <RootNamespace>QuickLook.Plugin.VideoViewer</RootNamespace>
+    <AssemblyName>QuickLook.Plugin.VideoViewer</AssemblyName>
+    <TargetFrameworkVersion>v4.5.2</TargetFrameworkVersion>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{60dc8134-eba5-43b8-bcc9-bb4bc16c2548};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+    <DebugSymbols>true</DebugSymbols>
+    <DebugType>full</DebugType>
+    <Optimize>false</Optimize>
+    <OutputPath>..\..\Build\Debug\Plugins\QuickLook.Plugin.VideoViewer\</OutputPath>
+    <DefineConstants>DEBUG;TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+    <PlatformTarget>x86</PlatformTarget>
+    <AllowUnsafeBlocks>false</AllowUnsafeBlocks>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+    <DebugType>pdbonly</DebugType>
+    <Optimize>true</Optimize>
+    <OutputPath>..\..\Build\Release\Plugins\QuickLook.Plugin.VideoViewer\</OutputPath>
+    <DefineConstants>TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+    <PlatformTarget>x86</PlatformTarget>
+    <AllowUnsafeBlocks>false</AllowUnsafeBlocks>
+  </PropertyGroup>
+  <ItemGroup>
+    <Reference Include="FontAwesome.WPF, Version=4.7.0.37774, Culture=neutral, PublicKeyToken=0758b07a11a4f466, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\FontAwesome.WPF.4.7.0.9\lib\net40\FontAwesome.WPF.dll</HintPath>
+    </Reference>
+    <Reference Include="System" />
+    <Reference Include="System.Xml" />
+    <Reference Include="System.Core" />
+    <Reference Include="System.Xaml">
+      <RequiredTargetFramework>4.0</RequiredTargetFramework>
+    </Reference>
+    <Reference Include="Unosquare.FFmpegMediaElement">
+      <HintPath>References\Unosquare.FFmpegMediaElement.dll</HintPath>
+    </Reference>
+    <Reference Include="WindowsBase" />
+    <Reference Include="PresentationCore" />
+    <Reference Include="PresentationFramework" />
+  </ItemGroup>
+  <ItemGroup>
+    <Page Include="HorizontalSliderStyle.xaml">
+      <Generator>MSBuild:Compile</Generator>
+      <SubType>Designer</SubType>
+    </Page>
+    <Page Include="ViewerPanel.xaml">
+      <Generator>MSBuild:Compile</Generator>
+      <SubType>Designer</SubType>
+    </Page>
+    <Compile Include="DoubleToHMSConverter.cs" />
+    <Compile Include="PluginInterface.cs" />
+    <Compile Include="ViewerPanel.xaml.cs">
+      <DependentUpon>ViewerPanel.xaml</DependentUpon>
+      <SubType>Code</SubType>
+    </Compile>
+  </ItemGroup>
+  <ItemGroup>
+    <Compile Include="Properties\AssemblyInfo.cs">
+      <SubType>Code</SubType>
+    </Compile>
+    <Compile Include="Properties\Resources.Designer.cs">
+      <AutoGen>True</AutoGen>
+      <DesignTime>True</DesignTime>
+      <DependentUpon>Resources.resx</DependentUpon>
+    </Compile>
+    <Compile Include="Properties\Settings.Designer.cs">
+      <AutoGen>True</AutoGen>
+      <DependentUpon>Settings.settings</DependentUpon>
+      <DesignTimeSharedInput>True</DesignTimeSharedInput>
+    </Compile>
+    <EmbeddedResource Include="Properties\Resources.resx">
+      <Generator>ResXFileCodeGenerator</Generator>
+      <LastGenOutput>Resources.Designer.cs</LastGenOutput>
+    </EmbeddedResource>
+    <None Include="packages.config" />
+    <None Include="Properties\Settings.settings">
+      <Generator>SettingsSingleFileGenerator</Generator>
+      <LastGenOutput>Settings.Designer.cs</LastGenOutput>
+    </None>
+  </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="..\..\QuickLook\QuickLook.csproj">
+      <Project>{8b4a9ce5-67b5-4a94-81cb-3771f688fdeb}</Project>
+      <Name>QuickLook</Name>
+      <Private>False</Private>
+    </ProjectReference>
+  </ItemGroup>
+  <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
+</Project>

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

@@ -0,0 +1,46 @@
+<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:local="clr-namespace:QuickLook.Plugin.VideoViewer"
+             xmlns:ffmpeg="clr-namespace:Unosquare.FFmpegMediaElement;assembly=Unosquare.FFmpegMediaElement"
+             mc:Ignorable="d"
+             d:DesignHeight="300" d:DesignWidth="300">
+    <Grid>
+        <Grid.Resources>
+            <ResourceDictionary>
+                <local:DoubleToTimeSpanConverter x:Key="DoubleToTimeSpanConverter" />
+                <local:DecimalToTimeSpanConverter x:Key="DecimalToTimeSpanConverter" />
+                <ResourceDictionary.MergedDictionaries>
+                    <ResourceDictionary Source="HorizontalSliderStyle.xaml" />
+                </ResourceDictionary.MergedDictionaries>
+            </ResourceDictionary>
+        </Grid.Resources>
+        <DockPanel>
+            <DockPanel DockPanel.Dock="Bottom" Height="26" Margin="-1,0,0,0">
+                <fa:ImageAwesome DockPanel.Dock="Left" x:Name="buttonPlayPause" Icon="PauseCircleOutline"
+                                 Height="16" Width="16" Margin="5,5" Foreground="Gray"
+                                 Cursor="Hand" />
+                <StackPanel DockPanel.Dock="Right" HorizontalAlignment="Center" VerticalAlignment="Center"
+                            Orientation="Horizontal" Margin="10,0,7,0">
+                    <TextBlock FontSize="14"
+                               Text="{Binding Position, ElementName=mediaElement,Converter={StaticResource DecimalToTimeSpanConverter}}" />
+                    <TextBlock FontSize="14" Text=" / " />
+                    <TextBlock FontSize="14"
+                               Text="{Binding NaturalDuration, StringFormat=hh:mm:ss, ElementName=mediaElement,Converter={StaticResource DoubleToTimeSpanConverter}}" />
+                </StackPanel>
+                <Slider x:Name="sliderProgress" Style="{StaticResource HorizontalSlider}"
+                        Margin="0,0,0,0" VerticalAlignment="Center"
+                        Value="{Binding Position, ElementName=mediaElement}"
+                        Maximum="{Binding NaturalDuration, ElementName=mediaElement, Mode=OneWay}" />
+            </DockPanel>
+            <ffmpeg:MediaElement x:Name="mediaElement" />
+        </DockPanel>
+        <Label x:Name="errorOverlay" Visibility="Collapsed" Background="#CCAAAAAA" VerticalContentAlignment="Center"
+               HorizontalContentAlignment="Center">
+            Video load failed.
+        </Label>
+    </Grid>
+</UserControl>

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

@@ -0,0 +1,69 @@
+using System;
+using System.ComponentModel;
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Input;
+using FontAwesome.WPF;
+using Unosquare.FFmpegMediaElement;
+
+namespace QuickLook.Plugin.VideoViewer
+{
+    /// <summary>
+    ///     Interaction logic for UserControl1.xaml
+    /// </summary>
+    public partial class ViewerPanel : UserControl, IDisposable
+    {
+        public ViewerPanel()
+        {
+            InitializeComponent();
+
+            buttonPlayPause.MouseLeftButtonUp += TogglePlayPause;
+
+            mediaElement.PropertyChanged += ChangePlayPauseButton;
+            mediaElement.MouseLeftButtonUp += TogglePlayPause;
+            mediaElement.MediaErrored += ShowErrorOverlay;
+            mediaElement.MediaFailed += ShowErrorOverlay;
+        }
+
+        public void Dispose()
+        {
+            mediaElement?.Dispose();
+        }
+
+        private void TogglePlayPause(object sender, MouseButtonEventArgs e)
+        {
+            if (mediaElement.IsPlaying)
+                mediaElement.Pause();
+            else
+                mediaElement.Play();
+        }
+
+        private void ChangePlayPauseButton(object sender, PropertyChangedEventArgs e)
+        {
+            if (e.PropertyName != "IsPlaying" && e.PropertyName != "HasMediaEnded")
+                return;
+
+            buttonPlayPause.Icon = mediaElement.IsPlaying
+                ? FontAwesomeIcon.PauseCircleOutline
+                : FontAwesomeIcon.PlayCircleOutline;
+        }
+
+        private void ShowErrorOverlay(object sender, MediaErrorRoutedEventArgs e)
+        {
+            mediaElement.Stop();
+            errorOverlay.Visibility = Visibility.Visible;
+        }
+
+        public void LoadAndPlay(string path)
+        {
+            mediaElement.Source = new Uri(path);
+            mediaElement.Play();
+        }
+
+        ~ViewerPanel()
+        {
+            GC.SuppressFinalize(this);
+            Dispose();
+        }
+    }
+}

QuickLook.Plugin/QuickLook.Plugin.VideoViewer/packages.config

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<packages>
+  <package id="FontAwesome.WPF" version="4.7.0.9" targetFramework="net452" />
+</packages>

QuickLook.sln

@@ -22,6 +22,8 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "QuickLook.Plugin.TextViewer
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "QuickLook.Plugin.OfficeViewer", "QuickLook.Plugin\QuickLook.Plugin.OfficeViewer\QuickLook.Plugin.OfficeViewer.csproj", "{E37675EA-D957-4495-8655-2609BF86756C}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "QuickLook.Plugin.VideoViewer", "QuickLook.Plugin\QuickLook.Plugin.VideoViewer\QuickLook.Plugin.VideoViewer.csproj", "{1B746D92-49A5-4A37-9D75-DCC490393290}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|x86 = Debug|x86
@@ -56,6 +58,10 @@ Global
 		{E37675EA-D957-4495-8655-2609BF86756C}.Debug|x86.Build.0 = Debug|Any CPU
 		{E37675EA-D957-4495-8655-2609BF86756C}.Release|x86.ActiveCfg = Release|Any CPU
 		{E37675EA-D957-4495-8655-2609BF86756C}.Release|x86.Build.0 = Release|Any CPU
+		{1B746D92-49A5-4A37-9D75-DCC490393290}.Debug|x86.ActiveCfg = Debug|Any CPU
+		{1B746D92-49A5-4A37-9D75-DCC490393290}.Debug|x86.Build.0 = Debug|Any CPU
+		{1B746D92-49A5-4A37-9D75-DCC490393290}.Release|x86.ActiveCfg = Release|Any CPU
+		{1B746D92-49A5-4A37-9D75-DCC490393290}.Release|x86.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
@@ -66,5 +72,6 @@ Global
 		{A82AC69C-EDF5-4F0D-8CBD-8E5E3C06E64D} = {06EFDBE0-6408-4B37-BCF2-0CF9EBEA2E93}
 		{AE041682-E3A1-44F6-8BB4-916A98D89FBE} = {06EFDBE0-6408-4B37-BCF2-0CF9EBEA2E93}
 		{E37675EA-D957-4495-8655-2609BF86756C} = {06EFDBE0-6408-4B37-BCF2-0CF9EBEA2E93}
+		{1B746D92-49A5-4A37-9D75-DCC490393290} = {06EFDBE0-6408-4B37-BCF2-0CF9EBEA2E93}
 	EndGlobalSection
 EndGlobal

QuickLook/App.xaml.cs

@@ -10,7 +10,8 @@ namespace QuickLook
     /// </summary>
     public partial class App : Application
     {
-        public static string AppPath = Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location);
+        public static readonly string AppFullPath = Assembly.GetExecutingAssembly().Location;
+        public static readonly string AppPath = Path.GetDirectoryName(AppFullPath);
 
         protected override void OnStartup(StartupEventArgs e)
         {

QuickLook/Helpers/WindowHelper.cs

@@ -1,4 +1,5 @@
 using System;
+using System.IO;
 using System.Text;
 using System.Windows.Interop;
 using QuickLook.NativeMethods;
@@ -41,10 +42,17 @@ namespace QuickLook.Helpers
             return focusedControlHandle;
         }
 
+        internal static bool IsFocusedWindowSelf()
+        {
+            var focusedWindowClass = GetWindowClassName(GetFocusedWindow());
+
+            return focusedWindowClass.StartsWith($"HwndWrapper[{Path.GetFileName(App.AppFullPath)};;");
+        }
+
         internal static bool IsFocusedControlExplorerItem()
         {
             if (NativeMethods.QuickLook.GetFocusedWindowType() == 0)
-                   return false;
+                return false;
 
             var focusedWindowClass = GetWindowClassName(GetFocusedWindow());
             var focusedWindowParentClass =

QuickLook/ViewWindowManager.cs

@@ -18,7 +18,8 @@ namespace QuickLook
         internal void InvokeRoutine()
         {
             if (!WindowHelper.IsFocusedControlExplorerItem())
-                return;
+                if (!WindowHelper.IsFocusedWindowSelf())
+                    return;
 
             if (CloseCurrentWindow())
                 return;

README.md

@@ -19,6 +19,7 @@ Till now, QuickLook supports the preview of
  - Pdf file
  - All kinds of text files (determined by file content)
  - Microsoft Word (`.doc`, `.docx`), Excel (`.xls`, `.xlsx`) and PowerPoint (`.ppt`, `.pptx`) files (requires MS Office installation)
+ - Video files (`.mp4`, `.mkv`, `.m2ts` etc.)
  - Other files and folders will be shown in a information box
 
 Hotkeys in preview window: