go back to FFME. There is still a memory leak for cover arts.

QuickLook.Plugin/QuickLook.Plugin.VideoViewer/Converters.cs

@@ -22,6 +22,34 @@ using System.Windows.Data;
 
 namespace QuickLook.Plugin.VideoViewer
 {
+    public sealed class TimeSpanToSecondsConverter : DependencyObject, IValueConverter
+    {
+        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            if (value is TimeSpan span)
+                return span.TotalSeconds;
+            if (value is Duration duration)
+                return duration.HasTimeSpan ? duration.TimeSpan.TotalSeconds : 0d;
+
+            return 0d;
+        }
+
+        object IValueConverter.ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            var span = TimeSpan.Zero;
+
+            if (value != null)
+                span = TimeSpan.FromSeconds((double) value);
+
+            if (targetType == typeof(TimeSpan))
+                return span;
+            if (targetType == typeof(Duration))
+                return new Duration(span);
+
+            return Activator.CreateInstance(targetType);
+        }
+    }
+
     public sealed class TimeSpanToShortStringConverter : DependencyObject, IValueConverter
     {
         public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
@@ -29,13 +57,17 @@ namespace QuickLook.Plugin.VideoViewer
             if (value == null)
                 return "00:00";
 
-            var v = (TimeSpan) value;
+            var span = TimeSpan.Zero;
+            if (value is Duration duration)
+                span = duration.HasTimeSpan ? duration.TimeSpan : TimeSpan.Zero;
+            if (value is TimeSpan timespan)
+                span = timespan;
 
             var s = string.Empty;
-            if (v.Hours > 0)
-                s += $"{v.Hours:D2}:";
+            if (span.Hours > 0)
+                s += $"{span.Hours:D2}:";
 
-            s += $"{v.Minutes:D2}:{v.Seconds:D2}";
+            s += $"{span.Minutes:D2}:{span.Seconds:D2}";
 
             return s;
         }
@@ -55,13 +87,9 @@ namespace QuickLook.Plugin.VideoViewer
             if (value == null)
                 return Volumes[0];
 
-            var v = (int) value;
-            if (v == 0)
-                return Volumes[0];
+            var v = (int) Math.Min(100, Math.Max((double) value * 100, 0));
 
-            v = Math.Min(v, 100);
-
-            return Volumes[1 + v / 34];
+            return v == 0 ? Volumes[0] : Volumes[1 + v / 34];
         }
 
         public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)

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

@@ -18,11 +18,10 @@
 using System;
 using System.IO;
 using System.Linq;
-using Meta.Vlc;
-using Meta.Vlc.Interop.Media;
-using Meta.Vlc.Wpf;
-using Size = System.Windows.Size;
-using VideoTrack = Meta.Vlc.VideoTrack;
+using System.Reflection;
+using System.Windows;
+using QuickLook.Plugin.VideoViewer.FFmpeg;
+using Unosquare.FFME;
 
 namespace QuickLook.Plugin.VideoViewer
 {
@@ -38,21 +37,32 @@ namespace QuickLook.Plugin.VideoViewer
             ".flac", ".gsm", ".iklax", ".ivs", ".m4a", ".m4b", ".m4p", ".mmf", ".mp3", ".mpc", ".msv", ".ogg",
             ".oga", ".mogg", ".opus", ".ra", ".rm", ".raw", ".tta", ".vox", ".wav", ".wma", ".wv", ".webm"
         };
-        private ContextObject _context;
 
+        private ContextObject _context;
         private ViewerPanel _vp;
 
+        private FFprobe probe;
+
         public int Priority => 0 - 10; // make it lower than TextViewer
         public bool AllowsTransparency => true;
 
         public void Init()
         {
-            ApiManager.Initialize(VlcSettings.LibVlcPath, VlcSettings.VlcOptions);
+            MediaElement.FFmpegDirectory = Path.Combine(
+                Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location), "FFmpeg\\",
+                App.Is64Bit ? "x64\\" : "x86\\");
         }
 
         public bool CanHandle(string path)
         {
-            return !Directory.Exists(path) && Formats.Contains(Path.GetExtension(path).ToLower());
+            if (Directory.Exists(path))
+                return false;
+
+            return Formats.Contains(Path.GetExtension(path).ToLower());
+
+            //FFprobe is much slower than fixed extensions
+            //probe = new FFprobe(path);
+            //return probe.CanDecode() & (probe.HasAudio() | probe.HasVideo());
         }
 
         public void Prepare(string path, ContextObject context)
@@ -60,16 +70,9 @@ namespace QuickLook.Plugin.VideoViewer
             _context = context;
 
             var def = new Size(500, 300);
+            probe = probe ?? new FFprobe(path);
 
-            var hasVideo = HasVideoStream(path, out Size mediaSize);
-
-            var windowSize = mediaSize == Size.Empty ? def : mediaSize;
-            windowSize.Width = Math.Max(def.Width, windowSize.Width);
-            windowSize.Height = Math.Max(def.Height, windowSize.Height);
-
-            context.SetPreferredSizeFit(windowSize, 0.6);
-            context.TitlebarOverlap = true;
-            if (!hasVideo)
+            if (!probe.HasVideo())
             {
                 context.CanResize = false;
                 context.TitlebarAutoHide = false;
@@ -80,52 +83,47 @@ namespace QuickLook.Plugin.VideoViewer
             {
                 context.TitlebarAutoHide = true;
                 context.UseDarkTheme = true;
+                context.CanResize = true;
+                context.TitlebarAutoHide = true;
+                context.TitlebarBlurVisibility = true;
+                context.TitlebarColourVisibility = true;
             }
+
+            var windowSize = probe.GetViewSize() == Size.Empty ? def : probe.GetViewSize();
+            windowSize.Width = Math.Max(def.Width, windowSize.Width);
+            windowSize.Height = Math.Max(def.Height, windowSize.Height);
+
+            context.SetPreferredSizeFit(windowSize, 0.6);
+            context.TitlebarOverlap = true;
         }
 
         public void View(string path, ContextObject context)
         {
-            _vp = new ViewerPanel(context);
+            _vp = new ViewerPanel(context, probe.HasVideo());
 
             context.ViewerContent = _vp;
 
-            _vp.mediaElement.VlcMediaPlayer.Opening += MarkReady;
-
+            _vp.mediaElement.MediaOpened += MediaElement_MediaOpened;
             _vp.LoadAndPlay(path);
 
             context.Title = $"{Path.GetFileName(path)}";
+
+        }
+
+        private void MediaElement_MediaOpened(object sender, RoutedEventArgs e)
+        {
+            _context.IsBusy = false;
         }
 
         public void Cleanup()
         {
-            if (_vp != null)
-                _vp.mediaElement.VlcMediaPlayer.Opening -= MarkReady;
+            if (_vp?.mediaElement != null)
+                _vp.mediaElement.MediaOpened -= MediaElement_MediaOpened;
+            
             _vp?.Dispose();
             _vp = null;
 
             _context = null;
         }
-
-        private void MarkReady(object sender, ObjectEventArgs<MediaState> e)
-        {
-            _context.IsBusy = false;
-        }
-
-        private bool HasVideoStream(string path, out Size size)
-        {
-            using (var vlc = new Vlc(VlcSettings.VlcOptions))
-            {
-                using (var media = vlc.CreateMediaFromPath(path))
-                {
-                    media.Parse();
-                    var tracks = media.GetTracks();
-                    var video = tracks.FirstOrDefault(mt => mt.Type == TrackType.Video) as VideoTrack;
-
-                    size = video == null ? Size.Empty : new Size(video.Width, video.Height);
-
-                    return video != null;
-                }
-            }
-        }
     }
 }

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

@@ -59,11 +59,11 @@
     <AssemblyOriginatorKeyFile>key.snk</AssemblyOriginatorKeyFile>
   </PropertyGroup>
   <ItemGroup>
-    <Reference Include="Meta.Vlc">
-      <HintPath>.\Meta.Vlc.dll</HintPath>
+    <Reference Include="ffme">
+      <HintPath>References\ffme.dll</HintPath>
     </Reference>
-    <Reference Include="Meta.Vlc.Wpf">
-      <HintPath>.\Meta.Vlc.Wpf.dll</HintPath>
+    <Reference Include="policy.2.0.taglib-sharp, Version=0.0.0.0, Culture=neutral, PublicKeyToken=db62eba44689b5b0, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\taglib.2.1.0.0\lib\policy.2.0.taglib-sharp.dll</HintPath>
     </Reference>
     <Reference Include="System" />
     <Reference Include="System.Core" />
@@ -71,12 +71,16 @@
     <Reference Include="System.Xaml">
       <RequiredTargetFramework>4.0</RequiredTargetFramework>
     </Reference>
+    <Reference Include="System.Xml" />
+    <Reference Include="taglib-sharp, Version=2.1.0.0, Culture=neutral, PublicKeyToken=db62eba44689b5b0, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\taglib.2.1.0.0\lib\taglib-sharp.dll</HintPath>
+    </Reference>
     <Reference Include="WindowsBase" />
     <Reference Include="PresentationCore" />
     <Reference Include="PresentationFramework" />
   </ItemGroup>
   <ItemGroup>
-    <Compile Include="VlcSettings.cs" />
+    <Compile Include="ffmpeg\FFprobe.cs" />
     <Page Include="Styles.xaml">
       <Generator>MSBuild:Compile</Generator>
       <SubType>Designer</SubType>
@@ -100,6 +104,7 @@
       <SubType>Code</SubType>
     </Compile>
     <None Include="key.snk" />
+    <None Include="packages.config" />
   </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="..\..\QuickLook\QuickLook.csproj">

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

@@ -3,7 +3,7 @@
              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:vlc="clr-namespace:Meta.Vlc.Wpf;assembly=Meta.Vlc.Wpf"
+             xmlns:ffme="clr-namespace:Unosquare.FFME;assembly=ffme"
              xmlns:local="clr-namespace:QuickLook.Plugin.VideoViewer"
              xmlns:glassLayer="clr-namespace:QuickLook.Controls.GlassLayer;assembly=QuickLook"
              mc:Ignorable="d"
@@ -13,6 +13,7 @@
         <ResourceDictionary>
             <BooleanToVisibilityConverter x:Key="BooleanToVisibilityConverter" />
             <local:TimeSpanToShortStringConverter x:Key="TimeSpanToShortStringConverter" />
+            <local:TimeSpanToSecondsConverter x:Key="TimeSpanToSecondsConverter" />
             <local:VolumeToIconConverter x:Key="VolumeToIconConverter" />
             <ResourceDictionary.MergedDictionaries>
                 <ResourceDictionary Source="Styles.xaml" />
@@ -20,14 +21,13 @@
         </ResourceDictionary>
     </UserControl.Resources>
     <Grid>
-        <vlc:VlcPlayer x:Name="mediaElement" LibVlcPath="{Binding LibVlcPath, ElementName=viewerPanel}"
-                       VlcOption="{Binding VlcOption, ElementName=viewerPanel}" />
+        <ffme:MediaElement x:Name="mediaElement" />
         <Grid x:Name="coverArtPersenter" ClipToBounds="True" Background="{StaticResource MainWindowBackground}">
             <Grid.Style>
                 <Style TargetType="Grid">
                     <Setter Property="Visibility" Value="Collapsed" />
                     <Style.Triggers>
-                        <DataTrigger Binding="{Binding HasVideo, ElementName=viewerPanel}" Value="False">
+                        <DataTrigger Binding="{Binding ShowVideo, ElementName=viewerPanel}" Value="False">
                             <Setter Property="Visibility" Value="Visible" />
                         </DataTrigger>
                     </Style.Triggers>
@@ -91,7 +91,7 @@
                 </TextBlock>
                 <TextBlock x:Name="metaLength" Grid.Row="5" FontSize="14" Padding="3" TextTrimming="CharacterEllipsis"
                            Foreground="{DynamicResource WindowTextForeground}"
-                           Text="{Binding ElementName=mediaElement, Path=Length, Converter={StaticResource TimeSpanToShortStringConverter}}" />
+                           Text="{Binding ElementName=mediaElement, Path=NaturalDuration, Converter={StaticResource TimeSpanToShortStringConverter}}" />
             </Grid>
         </Grid>
 
@@ -115,13 +115,13 @@
                 </Storyboard>
             </Grid.Resources>
             <glassLayer:GlassLayer OverlayColor="{DynamicResource CaptionBackground}"
-                                   GlassVisibility="{Binding ElementName=viewerPanel, Path=HasVideo,Converter={StaticResource BooleanToVisibilityConverter}}"
-                                   ColorOverlayVisibility="{Binding ElementName=viewerPanel, Path=HasVideo,Converter={StaticResource BooleanToVisibilityConverter}}">
+                                   GlassVisibility="{Binding ElementName=viewerPanel, Path=ShowVideo,Converter={StaticResource BooleanToVisibilityConverter}}"
+                                   ColorOverlayVisibility="{Binding ElementName=viewerPanel, Path=ShowVideo,Converter={StaticResource BooleanToVisibilityConverter}}">
                 <glassLayer:GlassLayer.Style>
                     <Style TargetType="glassLayer:GlassLayer">
                         <Setter Property="BlurredElement" Value="{Binding ElementName=mediaElement}" />
                         <Style.Triggers>
-                            <DataTrigger Binding="{Binding ElementName=viewerPanel,Path=HasVideo}" Value="True">
+                            <DataTrigger Binding="{Binding ElementName=viewerPanel,Path=ShowVideo}" Value="True">
                                 <Setter Property="BlurredElement" Value="{Binding ElementName=mediaElement}" />
                             </DataTrigger>
                         </Style.Triggers>
@@ -134,7 +134,7 @@
                         <Style TargetType="Button" BasedOn="{StaticResource ControlButtonStyle}">
                             <Setter Property="Content" Value="&#xE769;" />
                             <Style.Triggers>
-                                <DataTrigger Binding="{Binding IsPlaying, ElementName=viewerPanel}"
+                                <DataTrigger Binding="{Binding IsPlaying, ElementName=mediaElement}"
                                              Value="False">
                                     <Setter Property="Content" Value="&#xE768;" />
                                 </DataTrigger>
@@ -148,7 +148,7 @@
                             <Setter Property="Content"
                                     Value="{Binding ElementName=mediaElement, Path=Volume, Converter={StaticResource VolumeToIconConverter}}" />
                             <Style.Triggers>
-                                <DataTrigger Binding="{Binding IsMuted, ElementName=viewerPanel}"
+                                <DataTrigger Binding="{Binding IsMuted, ElementName=mediaElement}"
                                              Value="True">
                                     <Setter Property="Content" Value="&#xE74F;" />
                                 </DataTrigger>
@@ -166,11 +166,11 @@
                                 <Style.Triggers>
                                     <DataTrigger Binding="{Binding ElementName=buttonTime, Path=Tag}" Value="Time">
                                         <Setter Property="Text"
-                                                Value="{Binding ElementName=mediaElement, Path=Time, Converter={StaticResource TimeSpanToShortStringConverter}}" />
+                                                Value="{Binding ElementName=mediaElement, Path=Position, Converter={StaticResource TimeSpanToShortStringConverter}}" />
                                     </DataTrigger>
                                     <DataTrigger Binding="{Binding ElementName=buttonTime, Path=Tag}" Value="Length">
                                         <Setter Property="Text"
-                                                Value="{Binding ElementName=mediaElement, Path=Length, Converter={StaticResource TimeSpanToShortStringConverter}}" />
+                                                Value="{Binding ElementName=mediaElement, Path=NaturalDuration, Converter={StaticResource TimeSpanToShortStringConverter}}" />
                                     </DataTrigger>
                                 </Style.Triggers>
                             </Style>
@@ -178,14 +178,16 @@
                     </TextBlock>
                 </Button>
                 <Slider x:Name="sliderProgress" Style="{StaticResource PositionSliderStyle}"
-                        SmallChange="0.00001" LargeChange="0.01" Maximum="1"
-                        Value="{Binding Position, ElementName=mediaElement}" />
+                        SmallChange="{Binding FrameStepDuration, ElementName=mediaElement, Converter={StaticResource TimeSpanToSecondsConverter}}" 
+                        LargeChange="{Binding FrameStepDuration, ElementName=mediaElement, Converter={StaticResource TimeSpanToSecondsConverter}}" 
+                        Maximum="{Binding NaturalDuration, ElementName=mediaElement, Converter={StaticResource TimeSpanToSecondsConverter}}"
+                        Value="{Binding Position, ElementName=mediaElement, Converter={StaticResource TimeSpanToSecondsConverter}}" />
             </DockPanel>
         </Grid>
         <Grid x:Name="volumeSliderLayer" Background="Transparent" Visibility="Collapsed">
             <Grid Height="32" Width="130" HorizontalAlignment="Right" VerticalAlignment="Bottom"
                   Background="{DynamicResource CaptionButtonHoverBackground}" Margin="0,0,0,32">
-                <Slider Style="{StaticResource CustomSliderStyle}" Width="110" Maximum="100"
+                <Slider Style="{StaticResource CustomSliderStyle}" Width="110" Maximum="1" 
                         Value="{Binding ElementName=mediaElement, Path=Volume}" />
             </Grid>
         </Grid>

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

@@ -18,18 +18,18 @@
 using System;
 using System.ComponentModel;
 using System.Diagnostics;
-using System.Drawing;
+using System.IO;
+using System.Linq;
 using System.Runtime.CompilerServices;
-using System.Threading.Tasks;
 using System.Windows;
 using System.Windows.Controls;
 using System.Windows.Input;
 using System.Windows.Media.Animation;
-using Meta.Vlc;
-using Meta.Vlc.Interop.Media;
+using System.Windows.Media.Imaging;
 using QuickLook.Annotations;
 using QuickLook.ExtensionMethods;
-using MediaState = Meta.Vlc.Interop.Media.MediaState;
+using TagLib;
+using File = TagLib.File;
 
 namespace QuickLook.Plugin.VideoViewer
 {
@@ -40,16 +40,13 @@ namespace QuickLook.Plugin.VideoViewer
     {
         private readonly ContextObject _context;
 
-        private Uri _coverArt;
-        private bool _hasAudio;
-        private bool _hasEnded;
-        private bool _hasVideo;
-        private bool _isMuted;
-        private bool _isPlaying;
+        private BitmapSource _coverArt;
         private bool _wasPlaying;
 
-        public ViewerPanel(ContextObject context)
+        public ViewerPanel(ContextObject context, bool hasVideo)
         {
+            ShowVideo = hasVideo;
+
             InitializeComponent();
 
             // apply global theme
@@ -58,8 +55,8 @@ namespace QuickLook.Plugin.VideoViewer
             ShowViedoControlContainer(null, null);
             viewerPanel.PreviewMouseMove += ShowViedoControlContainer;
 
-            mediaElement.PropertyChanged += PlayerPropertyChanged;
-            mediaElement.StateChanged += PlayerStateChanged;
+            //mediaElement.PropertyChanged += PlayerPropertyChanged;
+            //mediaElement.StateChanged += PlayerStateChanged;
 
             _context = context;
 
@@ -70,15 +67,14 @@ namespace QuickLook.Plugin.VideoViewer
 
             sliderProgress.PreviewMouseDown += (sender, e) =>
             {
-                _wasPlaying = mediaElement.VlcMediaPlayer.IsPlaying;
+                _wasPlaying = mediaElement.IsPlaying;
                 mediaElement.Pause();
             };
             sliderProgress.PreviewMouseUp += (sender, e) =>
             {
                 if (_wasPlaying) mediaElement.Play();
             };
-
-            mediaElement.VlcMediaPlayer.EncounteredError += ShowErrorNotification;
+            mediaElement.MediaFailed += ShowErrorNotification;
             /*mediaElement.MediaEnded += (s, e) =>
             {
                 if (mediaElement.IsOpen)
@@ -89,90 +85,32 @@ namespace QuickLook.Plugin.VideoViewer
                     }
             };*/
 
-            PreviewMouseWheel += (sender, e) => ChangeVolume((double) e.Delta / 120 * 4);
+            PreviewMouseWheel += (sender, e) => ChangeVolume((double) e.Delta / 120 * 0.05);
         }
 
-        public bool IsMuted
-        {
-            get => _isMuted;
-            set
-            {
-                if (value == _isMuted) return;
-                _isMuted = value;
-                mediaElement.IsMute = value;
-                OnPropertyChanged();
-            }
-        }
+        public bool ShowVideo { get; private set; }
 
-        public bool HasEnded
-        {
-            get => _hasEnded;
-            private set
-            {
-                if (value == _hasEnded) return;
-                _hasEnded = value;
-                OnPropertyChanged();
-            }
-        }
-
-        public bool HasAudio
-        {
-            get => _hasAudio;
-            private set
-            {
-                if (value == _hasAudio) return;
-                _hasAudio = value;
-                OnPropertyChanged();
-            }
-        }
-
-        public bool HasVideo
-        {
-            get => _hasVideo;
-            private set
-            {
-                if (value == _hasVideo) return;
-                _hasVideo = value;
-                OnPropertyChanged();
-            }
-        }
-
-        public bool IsPlaying
-        {
-            get => _isPlaying;
-            private set
-            {
-                if (value == _isPlaying) return;
-                _isPlaying = value;
-                OnPropertyChanged();
-            }
-        }
-
-        public Uri CoverArt
+        public BitmapSource CoverArt
         {
             get => _coverArt;
             private set
             {
-                if (value == _coverArt) return;
+                if (Equals(value, _coverArt)) return;
                 if (value == null) return;
                 _coverArt = value;
                 OnPropertyChanged();
             }
         }
 
-        public string LibVlcPath { get; } = VlcSettings.LibVlcPath;
-
-        public string[] VlcOption { get; } = VlcSettings.VlcOptions;
-
         public void Dispose()
         {
+            GC.SuppressFinalize(this);
+
             try
             {
-                Task.Run(() =>
-                {
-                    mediaElement?.Dispose();
-                    mediaElement = null;
-                });
+                CoverArt = null;
+                mediaElement?.Dispose();
+                mediaElement = null;
             }
             catch (Exception e)
             {
@@ -191,7 +129,7 @@ namespace QuickLook.Plugin.VideoViewer
 
         private void AutoHideViedoControlContainer(object sender, EventArgs e)
         {
-            if (!HasVideo)
+            if (ShowVideo)
                 return;
 
             if (videoControlContainer.IsMouseOver)
@@ -202,69 +140,26 @@ namespace QuickLook.Plugin.VideoViewer
             hide.Begin();
         }
 
-        private void PlayerStop(object sender, MouseButtonEventArgs e)
+        private void UpdateMeta(string path)
         {
-            HasEnded = false;
-            IsPlaying = false;
-            mediaElement.Position = 0;
-            mediaElement.Stop();
-        }
-
-        private void PlayerPropertyChanged(object sender, PropertyChangedEventArgs e)
-        {
-            var prop = e.PropertyName;
-
-            switch (prop)
-            {
-                case nameof(mediaElement.IsMute):
-                    IsMuted = mediaElement.IsMute;
-                    break;
-            }
-        }
-
-        private void PlayerStateChanged(object sender, ObjectEventArgs<MediaState> e)
-        {
-            var state = e.Value;
-
-            switch (state)
-            {
-                case MediaState.Opening:
-                    HasVideo = mediaElement.VlcMediaPlayer.VideoTrackCount > 0;
-                    HasAudio = mediaElement.VlcMediaPlayer.AudioTrackCount > 0;
-                    break;
-                case MediaState.Playing:
-                    UpdateMeta();
-                    DetermineTheme();
-                    HasVideo = mediaElement.VlcMediaPlayer.VideoTrackCount > 0;
-                    HasAudio = mediaElement.VlcMediaPlayer.AudioTrackCount > 0;
-                    IsPlaying = true;
-                    break;
-                case MediaState.Paused:
-                    IsPlaying = false;
-                    break;
-                case MediaState.Ended:
-                    IsPlaying = false;
-                    HasEnded = true;
-                    break;
-                case MediaState.Error:
-                    ShowErrorNotification(sender, e);
-                    break;
-            }
-        }
-
-        private void UpdateMeta()
-        {
-            if (HasVideo)
+            if (ShowVideo)
                 return;
 
-            var path = mediaElement.VlcMediaPlayer.Media.GetMeta(MetaDataType.ArtworkUrl);
-            if (!string.IsNullOrEmpty(path))
-                CoverArt = new Uri(path);
-
-            metaTitle.Text = mediaElement.VlcMediaPlayer.Media.GetMeta(MetaDataType.Title);
-            metaArtists.Text = mediaElement.VlcMediaPlayer.Media.GetMeta(MetaDataType.Artist);
-            metaAlbum.Text = mediaElement.VlcMediaPlayer.Media.GetMeta(MetaDataType.Album);
+            using (var h = File.Create(path))
+            {
+                metaTitle.Text = h.Tag.Title;
+                metaArtists.Text = h.Tag.FirstPerformer;
+                metaAlbum.Text = h.Tag.Album;
 
+                //var cs = h.Tag.Pictures.FirstOrDefault(p => p.Type == TagLib.PictureType.FrontCover);
+                var cs = h.Tag.Pictures.FirstOrDefault();
+                if (cs != default(IPicture))
+                    using (var ms = new MemoryStream(cs.Data.Data))
+                    {
+                        CoverArt = BitmapFrame.Create(ms, BitmapCreateOptions.None, BitmapCacheOption.OnLoad);
+                        DetermineTheme();
+                    }
+            }
             metaArtists.Visibility = string.IsNullOrEmpty(metaArtists.Text)
                 ? Visibility.Collapsed
                 : Visibility.Visible;
@@ -275,16 +170,16 @@ namespace QuickLook.Plugin.VideoViewer
 
         private void DetermineTheme()
         {
-            if (HasVideo)
+            if (ShowVideo)
                 return;
 
             if (CoverArt == null)
                 return;
 
-            var dark = false;
-            using (var bitmap = new Bitmap(CoverArt.LocalPath))
+            bool dark;
+            using (var b = CoverArt.ToBitmap())
             {
-                dark = bitmap.IsDarkImage();
+                dark = b.IsDarkImage();
             }
 
             _context.UseDarkTheme = dark;
@@ -292,34 +187,20 @@ namespace QuickLook.Plugin.VideoViewer
 
         private void ChangeVolume(double delta)
         {
-            IsMuted = false;
+            mediaElement.IsMuted = false;
 
-            var newVol = mediaElement.Volume + (int) delta;
-            newVol = Math.Max(newVol, 0);
-            newVol = Math.Min(newVol, 100);
-
-            mediaElement.Volume = newVol;
-        }
-
-        private void Seek(TimeSpan delta)
-        {
-            _wasPlaying = mediaElement.VlcMediaPlayer.IsPlaying;
-            mediaElement.Pause();
-
-            mediaElement.Time += delta;
-
-            if (_wasPlaying) mediaElement.Play();
+            mediaElement.Volume += delta;
         }
 
         private void TogglePlayPause(object sender, EventArgs e)
         {
-            if (mediaElement.VlcMediaPlayer.IsPlaying)
+            if (mediaElement.IsPlaying)
             {
                 mediaElement.Pause();
             }
             else
             {
-                if (HasEnded)
+                if (mediaElement.HasMediaEnded)
                     mediaElement.Stop();
                 mediaElement.Play();
             }
@@ -339,15 +220,16 @@ namespace QuickLook.Plugin.VideoViewer
 
         public void LoadAndPlay(string path)
         {
-            mediaElement.LoadMedia(path);
-            mediaElement.Volume = 50;
+            UpdateMeta(path);
+
+            mediaElement.Source = new Uri(path);
+            mediaElement.Volume = 0.5;
 
             mediaElement.Play();
         }
 
         ~ViewerPanel()
         {
-            GC.SuppressFinalize(this);
             Dispose();
         }
 

QuickLook.Plugin/QuickLook.Plugin.VideoViewer/VlcSettings.cs

@@ -1,34 +0,0 @@
-// Copyright © 2017 Paddy Xu
-// 
-// This file is part of QuickLook program.
-// 
-// This program is free software: you can redistribute it and/or modify
-// it under the terms of the GNU General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-// 
-// This program is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU General Public License for more details.
-// 
-// You should have received a copy of the GNU General Public License
-// along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-using System.IO;
-using System.Reflection;
-
-namespace QuickLook.Plugin.VideoViewer
-{
-    public static class VlcSettings
-    {
-        public static string LibVlcPath = Path.Combine(
-            Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location),
-            App.Is64Bit ? @"LibVLC\x64" : @"LibVLC\x86");
-
-        public static string[] VlcOptions =
-        {
-            "-I", "--dummy-quiet", "--ignore-config", "--no-video-title", "--no-sub-autodetect-file"
-        };
-    }
-}

QuickLook.Plugin/QuickLook.Plugin.VideoViewer/ffmpeg/FFprobe.cs

@@ -0,0 +1,131 @@
+// Copyright © 2017 Paddy Xu
+// 
+// This file is part of QuickLook program.
+// 
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// 
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+// 
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+using System;
+using System.Diagnostics;
+using System.IO;
+using System.Reflection;
+using System.Text;
+using System.Windows;
+using System.Xml.XPath;
+
+namespace QuickLook.Plugin.VideoViewer.FFmpeg
+{
+    internal class FFprobe
+    {
+        private static readonly string _probePath =
+            Path.Combine(Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location), "FFmpeg\\",
+                App.Is64Bit ? "x64\\" : "x86\\", "ffprobe.exe");
+
+        private XPathNavigator _infoNavigator;
+
+        public FFprobe(string media)
+        {
+            Run(media);
+        }
+
+        private bool Run(string media)
+        {
+            string result;
+
+            using (var p = new Process())
+            {
+                p.StartInfo.UseShellExecute = false;
+                p.StartInfo.CreateNoWindow = true;
+                p.StartInfo.RedirectStandardOutput = true;
+                p.StartInfo.FileName = _probePath;
+                p.StartInfo.Arguments = $"-v quiet -print_format xml -show_streams -show_format \"{media}\"";
+                p.StartInfo.StandardOutputEncoding = Encoding.UTF8;
+                p.Start();
+                p.WaitForExit();
+
+                result = p.StandardOutput.ReadToEnd();
+            }
+
+            if (string.IsNullOrWhiteSpace(result))
+                return false;
+
+            ParseResult(result);
+            return true;
+        }
+
+        private void ParseResult(string result)
+        {
+            _infoNavigator = new XPathDocument(new StringReader(result)).CreateNavigator();
+        }
+
+        public bool CanDecode()
+        {
+            var info = _infoNavigator.SelectSingleNode("/ffprobe/format[@probe_score>25]");
+
+            return info != null;
+        }
+
+        public string GetFormatName()
+        {
+            var format = _infoNavigator.SelectSingleNode("/ffprobe/format/@format_name")?.Value;
+
+            return format ?? string.Empty;
+        }
+
+        public string GetFormatLongName()
+        {
+            var format = _infoNavigator.SelectSingleNode("/ffprobe/format/@format_long_name")?.Value;
+
+            return format ?? string.Empty;
+        }
+
+        public bool HasAudio()
+        {
+            var duration = _infoNavigator.SelectSingleNode("/ffprobe/streams/stream[@codec_type='audio'][1]/@duration")
+                ?.Value;
+
+            if (duration == null)
+                return false;
+
+            double.TryParse(duration, out var d);
+            return Math.Abs(d) > 0.01;
+        }
+
+        public bool HasVideo()
+        {
+            var fps = _infoNavigator.SelectSingleNode("/ffprobe/streams/stream[@codec_type='video'][1]/@avg_frame_rate")
+                ?.Value;
+
+            if (fps == null)
+                return false;
+
+            return fps != "0/0";
+        }
+
+        public Size GetViewSize()
+        {
+            if (!HasVideo())
+                return Size.Empty;
+
+            var width = _infoNavigator.SelectSingleNode("/ffprobe/streams/stream[@codec_type='video'][1]/@coded_width")
+                ?.Value;
+            var height = _infoNavigator.SelectSingleNode("/ffprobe/streams/stream[@codec_type='video'][1]/@coded_height")
+                ?.Value;
+
+            if (width == null || height == null)
+                return Size.Empty;
+
+            return new Size(double.Parse(width), double.Parse(height));
+        }
+    }
+}

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

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<packages>
+  <package id="taglib" version="2.1.0.0" targetFramework="net462" />
+</packages>