Splitter-UI/Converters/RotationAngleToIconConverter.cs

@@ -1,21 +0,0 @@
-using System.Globalization;
-using Avalonia.Data.Converters;
-
-namespace Splitter_UI.Converters;
-
-public sealed class RotationAngleToIconConverter : IValueConverter
-{
-    public object? Convert(object? value, Type targetType, object? parameter, CultureInfo culture)
-    {
-        return value switch
-        {
-            90  => "\uf2f9",  // FA7 (fa-rotate-left  / fa-arrow-rotate-left  / fa-undo)
-            180 => "\uf2f1",  // FA7 (fa-sync-alt)
-            270 => "\uf2ea",  // FA7 (fa-rotate-right / fa-arrow-rotate-right / fa-redo)
-            _   => null
-        };
-    }
-
-    public object? ConvertBack(object? value, Type targetType, object? parameter, CultureInfo culture)
-        => throw new NotSupportedException();
-}

Splitter-UI/Converters/ZeroToBoolConverter.cs

@@ -1,13 +0,0 @@
-using System.Globalization;
-using Avalonia.Data.Converters;
-
-namespace Splitter_UI.Converters;
-
-public sealed class ZeroToBoolConverter : IValueConverter
-{
-    public object? Convert(object? value, Type targetType, object? parameter, CultureInfo culture)
-        => (value is int i && i == 0);
-
-    public object? ConvertBack(object? value, Type targetType, object? parameter, CultureInfo culture)
-        => throw new NotSupportedException();
-}

Splitter-UI/Models/PreviewData.cs

@@ -2,17 +2,10 @@
 
 namespace Splitter_UI.Models;
 
-public class PreviewData
+public sealed class PreviewData
 {
-    public Avalonia.Media.Imaging.Bitmap? Frame { get; }
-    public IReadOnlyList<Rect> DetectedBoxes { get; }
-    public Rect? CropRect { get; }
-
-    public PreviewData(Avalonia.Media.Imaging.Bitmap? frame, IReadOnlyList<Rect> boxes, Rect? crop)
-    {
-        Frame = frame;
-        DetectedBoxes = boxes;
-        CropRect = crop;
-    }
-
-}
+    public Avalonia.Media.Imaging.Bitmap? Frame { get; init; }
+    public IReadOnlyList<Rect> FaceBoxes { get; init; } = [];
+    public IReadOnlyList<Rect> BodyBoxes { get; init; } = [];
+    public Rect? CropRect { get; init; }
+}

Splitter-UI/Program.cs

@@ -1,7 +1,6 @@
 using Avalonia;
 using Avalonia.Media;
 using Microsoft.Extensions.DependencyInjection;
-using Microsoft.Extensions.Logging;
 
 namespace Splitter_UI;
 
@@ -32,28 +31,12 @@ internal sealed class Program
         services.AddTransient<StatusBarViewModel>();
         services.AddTransient<LogPaneViewModel>();
 
-        // splitter services
-        services.AddSingleton<UltraFaceDetector>();
-        services.AddSingleton<YoloOnnxObjectDetector>();
-        services.AddSingleton( x => new SingleThreadedDetector<UltraFaceDetector>(x.GetRequiredService<UltraFaceDetector>()) );
-        services.AddSingleton( x => new SingleThreadedDetector<YoloOnnxObjectDetector>(x.GetRequiredService<YoloOnnxObjectDetector>()));
-        services.AddSingleton<Func<string, IObjectDetector>>( x => detectorName =>
-        {
-            return detectorName switch
-            {
-                "face" => x.GetRequiredService<SingleThreadedDetector<UltraFaceDetector>>(),
-                "body" => x.GetRequiredService<SingleThreadedDetector<YoloOnnxObjectDetector>>(),
-                _      => new DummyDetector()
-            };
-        });
-        services.AddSingleton<splitter.ILogger, GlobalLogger>();
-
         // Domain services (your pipeline)
-        services.AddTransient<IFileProbeService,    FileProbeService>();
-        services.AddTransient<IThumbnailService,    ThumbnailService>();
+        services.AddTransient<IFileProbeService, FileProbeService>();
+        services.AddTransient<IThumbnailService, ThumbnailService>();
         services.AddSingleton<IAutoDecisionService, AutoDecisionService>();
-        services.AddSingleton<IProcessingService,   ProcessingService>();
-        services.AddSingleton<ILogService,          LogService>();
+        services.AddSingleton<IProcessingService, ProcessingService>();
+        services.AddSingleton<ILogService, LogService>();
 
         services.AddSingleton<IFileJobFactory, FileJobFactory>();
 

Splitter-UI/Services/AvaloniaBitmapExtensions.cs

@@ -1,43 +0,0 @@
-using System.Runtime.InteropServices;
-using Avalonia;
-using Avalonia.Media.Imaging;
-using OpenCvSharp;
-
-namespace Splitter_UI.Services;
-
-public static class AvaloniaBitmapExtensions
-{
-    public static Mat ToMatContinuous(this Bitmap bmp)
-    {
-        var w = bmp.PixelSize.Width;
-        var h = bmp.PixelSize.Height;
-        var stride = w * 4;
-        var size = h * stride;
-
-        var buffer = new byte[size];
-        var handle = GCHandle.Alloc(buffer, GCHandleType.Pinned);
-
-        try
-        {
-            bmp.CopyPixels(
-                new PixelRect(0, 0, w, h),
-                handle.AddrOfPinnedObject(),
-                size,
-                stride);
-
-            return Mat.FromPixelData(h, w, MatType.CV_8UC4, buffer);
-        }
-        finally
-        {
-            handle.Free();
-        }
-    }
-
-    public static Mat ToMatBgrContinuous(this Bitmap bmp)
-    {
-        using var bgra = bmp.ToMatContinuous();
-        var bgr = new Mat();
-        Cv2.CvtColor(bgra, bgr, ColorConversionCodes.BGRA2BGR);
-        return bgr;
-    }
-}

Splitter-UI/Services/DummyDetector.cs

@@ -1,12 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Text;
-using OpenCvSharp;
-
-namespace Splitter_UI.Services;
-
-internal class DummyDetector : IObjectDetector
-{
-    public List<(Rect box, splitter.Point2f center)> DetectAll(Mat frameCont) => [];
-    public void Dispose() {}
-}

Splitter-UI/Services/GlobalLogger.cs

@@ -1,15 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Text;
-
-namespace Splitter_UI.Services;
-
-internal class GlobalLogger(ILogService _logService) : ILogger
-{
-    public void ClearProgress(int progressLevel) { }
-    public void DrawProgress(string name, int progressLine, double progress, TimeSpan eta, double speed) { }
-    public void Log(string prefix, ConsoleColor color, string msg)
-    {
-        _logService.Write($"[{prefix}] {msg}");
-    }
-}

Splitter-UI/Services/IThumbnailService.cs

@@ -5,5 +5,5 @@ namespace Splitter_UI.Services;
 
 public interface IThumbnailService
 {
-    Task<Bitmap?> CreateThumbnailAsync(string file, VideoInfo probe, TimeSpan? skip = null, int? width = null, int? height = null, int? rotateDegree = null);
+    Task<Bitmap?> CreateThumbnailAsync(string file, VideoInfo probe);
 }

Splitter-UI/Services/SingleThreadedDetector.cs

@@ -1,23 +0,0 @@
-using OpenCvSharp;
-
-namespace Splitter_UI.Services;
-
-public class SingleThreadedDetector<T>(IObjectDetector _detector) : IObjectDetector
-    where T : IObjectDetector
-{
-    private Lock _lock = new();
-
-    public List<(Rect box, splitter.Point2f center)> DetectAll(Mat frameCont)
-    {
-        lock (_lock)
-        {
-            return _detector.DetectAll(frameCont);
-        }
-    }
-    
-    public void Dispose()
-    {
-        if ( _detector is IDisposable d )
-            d.Dispose();
-    }
-}

Splitter-UI/Services/ThumbnailService.cs

@@ -7,55 +7,41 @@ namespace Splitter_UI.Services;
 
 public sealed class ThumbnailService : IThumbnailService
 {
-    private const int _thumbWidth  = 160;
-    private const int _thumbHeight = 90;
+    private readonly int _thumbWidth  = 160;
+    private readonly int _thumbHeight = 90;
 
-    private readonly byte [] _bgrBuffer  = new byte[_thumbWidth * _thumbHeight * 3];
-    private readonly byte [] _bgraBuffer = new byte[_thumbWidth * _thumbHeight * 4];
+    // Reusable buffer for BGR24 → 3 bytes per pixel
+    private readonly byte[] _bgrBuffer;
+    private readonly byte[] _bgraBuffer;
 
-    public async Task<Bitmap?> CreateThumbnailAsync(
-        string file,
-        VideoInfo probe,
-        TimeSpan? skip = null,
-        int? width = null,
-        int? height = null,
-        int? rotateDegree = null)
+    public ThumbnailService()
     {
-        width  ??= _thumbWidth;
-        height ??= _thumbHeight;
-        skip   ??= TimeSpan.Zero;
-
-        // buffer for BGR24 → 3 bytes per pixel
-
-        var canUseStaticBuffers =
-            width.Value == _thumbWidth &&
-            height.Value == _thumbHeight;
-
-        var bgrBuffer  = canUseStaticBuffers ? _bgrBuffer  : new byte[width.Value * height.Value * 3];
-        var bgraBuffer = canUseStaticBuffers ? _bgraBuffer : new byte[width.Value * height.Value * 4];
+        _bgrBuffer = new byte[_thumbWidth * _thumbHeight * 3];
+        _bgraBuffer = new byte[_thumbWidth * _thumbHeight * 4];
+    }
 
+    public async Task<Bitmap?> CreateThumbnailAsync(string file, VideoInfo probe)
+    {
         // Decode a single frame using ffmpeg → raw BGR24 into _bgrBuffer
-        bool ok = await DecodeFrameAsync(bgrBuffer, file, skip.Value, width.Value, height.Value, rotateDegree);
+        bool ok = await DecodeFrameAsync(file);
         if (!ok)
             return null;
 
         // Convert BGR24 → BGRA32
-        ConvertBgrToBgra(bgrBuffer, bgraBuffer, width.Value, height.Value);
+        ConvertBgrToBgra(_bgrBuffer, _bgraBuffer, _thumbWidth, _thumbHeight);
 
         // Create Avalonia Bitmap
-        return CreateBitmap(bgraBuffer, width.Value, height.Value, rotateDegree == 90 || rotateDegree == 270);
+        return CreateBitmap(_bgraBuffer, _thumbWidth, _thumbHeight);
     }
 
-    private static async Task<bool> DecodeFrameAsync(byte [] bgrBuffer, string file, TimeSpan skip, int width, int height, int? rotateDegree)
+    private async Task<bool> DecodeFrameAsync(string file)
     {
-        var rotationStr = TrackingSplitter.GetRorationArg(rotateDegree);
-
         // ffmpeg command: decode one frame, resize, output raw BGR24
         var args =
-            $"-ss {skip.TotalSeconds} -t 0.1 -i \"{file}\" " +
+            $"-ss 0 -t 0.1 -i \"{file}\" " +
             "-an -sn " +
-            $"-vf \"scale={width}:{height}:force_original_aspect_ratio=decrease," +
-            $"pad={width}:{height}:(ow-iw)/2:(oh-ih)/2,format=bgr24{rotationStr}\" " +
+            $"-vf \"scale={_thumbWidth}:{_thumbHeight}:force_original_aspect_ratio=decrease," +
+            $"pad={_thumbWidth}:{_thumbHeight}:(ow-iw)/2:(oh-ih)/2,format=bgr24\" " +
             "-f rawvideo -";
 
         var psi = new ProcessStartInfo
@@ -71,14 +57,14 @@ public sealed class ThumbnailService : IThumbnailService
         var p = new Process { StartInfo = psi };
         p.Start();
 
-        int needed = bgrBuffer.Length;
+        int needed = _bgrBuffer.Length;
         int read = 0;
 
         using var stdout = p.StandardOutput.BaseStream;
 
         while (read < needed)
         {
-            int r = await stdout.ReadAsync(bgrBuffer, read, needed - read);
+            int r = await stdout.ReadAsync(_bgrBuffer, read, needed - read);
             if (r == 0)
             {
                 TryKill(p);
@@ -115,13 +101,8 @@ public sealed class ThumbnailService : IThumbnailService
         }
     }
 
-    private static unsafe Bitmap CreateBitmap(byte[] bgra, int width, int height, bool isRotated)
+    private static unsafe Bitmap CreateBitmap(byte[] bgra, int width, int height)
     {
-        if (isRotated)
-        {
-            (height, width) = (width, height);
-        }
-
         int stride = width * 4;
 
         fixed (byte* p = bgra)

Splitter-UI/ViewModels/JobViewModel.cs

@@ -2,9 +2,7 @@
 using System.Collections.Specialized;
 using System.ComponentModel;
 using Avalonia.Media.Imaging;
-using Avalonia.Threading;
 using CommunityToolkit.Mvvm.ComponentModel;
-using CommunityToolkit.Mvvm.Input;
 
 namespace Splitter_UI.ViewModels;
 
@@ -12,8 +10,7 @@ public partial class JobViewModel : ObservableObject
 {
     public SingleJob   Job        { get; }
     public VideoInfo?   Probe     { get; set; }
-    [ObservableProperty]
-    private PreviewData? _preview = new(null, [], null);
+    public PreviewData? Preview   { get; set; }
     public ProgressInfo? Progress { get; set; }
     
     [ObservableProperty]
@@ -22,33 +19,11 @@ public partial class JobViewModel : ObservableObject
     [ObservableProperty]
     private string _suggestedAction = "";
 
-    // This updates continuously
-    [ObservableProperty]
-    private double _sliderLiveValue;
-
-    // This updates only on release
-    [ObservableProperty]
-    private double _positionSeconds;
-
-    public double DurationSeconds => Probe?.Duration ?? 0;
-
-    public IRelayCommand StepForwardCommand { get; }
-    public IRelayCommand StepBackwardCommand { get; }
-
-    private readonly IThumbnailService             _thumbnails;
-    private readonly IFileProbeService             _fileProbe;
-    private readonly DispatcherTimer               _debounceTimer;
-    private readonly Func<string, IObjectDetector> _detectorFactory;
-    private readonly ILogger                       _log;
+    private readonly IThumbnailService _thumbnails;
+    private readonly IFileProbeService _fileProbe;
 
     public string FileName => Path.GetFileName(Job.InputFile);
 
-    public string TextDesc => Probe != null 
-        ? $"{Probe.Width}x{Probe.Height}, {TimeSpan.FromSeconds(Probe.Duration).ToString(@"hh\:mm\:ss")}), FPS: {Probe.Fps:F2}, Bitrate: {Probe.Bitrate/1024/1024:F2} MB/s"
-        : "";
-
-    public override string ToString() => $"{FileName} - {TextDesc}";
-
     public ObservableCollection<ParameterEntry> ParametersList { get; }
         = new();
 
@@ -113,17 +88,14 @@ public partial class JobViewModel : ObservableObject
         {
             Job.Rotate = value;
             OnPropertyChanged();
-            Task.Run(CreatePreview);
         }
     }
 
-    public JobViewModel(SingleJob job, IThumbnailService thumbnails, IFileProbeService fileProbe, Func<string, IObjectDetector> detectorFactory, ILogger log)
+    public JobViewModel(SingleJob job, IThumbnailService thumbnails, IFileProbeService fileProbe)
     {
-        Job              = job;
-        _thumbnails      = thumbnails;
-        _fileProbe       = fileProbe;
-        _detectorFactory = detectorFactory;
-        _log             = log;
+        Job         = job;
+        _thumbnails = thumbnails;
+        _fileProbe  = fileProbe;
 
         ParametersList.Add(new ParameterEntry("DropoutToleranceFrames", ""));
         ParametersList.Add(new ParameterEntry("EmaFactor", ""));
@@ -141,14 +113,6 @@ public partial class JobViewModel : ObservableObject
 
         ParametersList.CollectionChanged += OnParametersCollectionChanged;
 
-        StepForwardCommand = new RelayCommand(StepForward);
-        StepBackwardCommand = new RelayCommand(StepBackward);
-
-        _debounceTimer = new DispatcherTimer
-        {
-            Interval = TimeSpan.FromSeconds(1)
-        };
-        _debounceTimer.Tick += DebounceTimerTick;
 
         _ = Task.Run( LoadThumbnailAsync );
     }
@@ -156,34 +120,8 @@ public partial class JobViewModel : ObservableObject
     private async Task LoadThumbnailAsync()
     {
         Probe           = await _fileProbe.ProbeAsync(Job);
-        Thumbnail       = await _thumbnails.CreateThumbnailAsync(Job.InputFile, Probe, rotateDegree: Job.Rotate);
+        Thumbnail       = await _thumbnails.CreateThumbnailAsync(Job.InputFile, Probe);
         SuggestedAction = Probe.Rotation == 0 ? "crop" : "rotate";
-
-        await CreatePreview();
-    }
-
-    private async Task CreatePreview()
-    {
-        if ( Probe == null)
-            return;
-        try
-        {
-            var frame    = await _thumbnails.CreateThumbnailAsync(Job.InputFile, Probe, TimeSpan.FromSeconds(PositionSeconds), Probe.Width, Probe.Height, Job.Rotate);
-            if (  frame == null )
-                return;
-
-            Preview      = new PreviewData(frame, [], null);
-
-            var detector = _detectorFactory(Job.Detect ?? "");
-            var detections = detector.DetectAll(frame.ToMatContinuous());
-
-            var boxes = detections.Select(x => new Avalonia.Rect(x.box.X, x.box.Y, x.box.Width, x.box.Height)).ToList();
-            Preview = new PreviewData(frame, boxes, null);
-        }
-        catch (Exception ex)
-        {
-            _log.LogError($"Error creating preview for {FileName}: {ex.Message}");
-        }
     }
 
     private void OnParameterChanged(object? sender, PropertyChangedEventArgs e)
@@ -215,45 +153,4 @@ public partial class JobViewModel : ObservableObject
         }
     }
 
-    private void StepForward()
-    {
-        if (DurationSeconds <= 0)
-            return;
-
-        var step = DurationSeconds * 0.1; // 10% of total duration
-
-        SliderLiveValue = Math.Min(DurationSeconds, SliderLiveValue + step);
-        // trigger seek in your playback pipeline here
-    }
-
-    private void StepBackward()
-    {
-        if (DurationSeconds <= 0)
-            return;
-
-        var step = DurationSeconds * 0.1; // 10% of total duration
-
-        SliderLiveValue = Math.Max(0, SliderLiveValue - step);
-        // trigger seek in your playback pipeline here
-    }
-
-    partial void OnSliderLiveValueChanged(double value)
-    {
-        // Restart debounce timer on every slider update
-        _debounceTimer.Stop();
-        _debounceTimer.Start();
-    }
-
-    private void DebounceTimerTick(object? sender, EventArgs e)
-    {
-        _debounceTimer.Stop();
-
-        // Commit the final value
-        PositionSeconds = SliderLiveValue;
-    }
-
-    partial void OnPositionSecondsChanged(double value)
-    {
-        Task.Run(CreatePreview);
-    }
 }

Splitter-UI/ViewModels/PreviewPaneViewModel.cs

@@ -1,5 +1,4 @@
-using System.ComponentModel;
-using CommunityToolkit.Mvvm.ComponentModel;
+using CommunityToolkit.Mvvm.ComponentModel;
 
 namespace Splitter_UI.ViewModels;
 
@@ -8,23 +7,7 @@ public partial class PreviewPaneViewModel : ObservableObject
     [ObservableProperty]
     private JobViewModel? _selected;
 
-    public PreviewData? Preview => Selected?.Preview;
-
-    partial void OnSelectedChanged(JobViewModel? oldValue, JobViewModel? newValue)
+    public PreviewPaneViewModel()
     {
-        if (oldValue != null)
-            oldValue.PropertyChanged -= SelectedPropertyChanged;
-
-        if (newValue != null)
-            newValue.PropertyChanged += SelectedPropertyChanged;
-
-        OnPropertyChanged(nameof(Preview));
-    }
-
-    private void SelectedPropertyChanged(object? sender, PropertyChangedEventArgs e)
-    {
-        if (e.PropertyName == nameof(JobViewModel.Preview))
-            OnPropertyChanged(nameof(Preview));
     }
 }
-

Splitter-UI/Views/FileListView.axaml

@@ -3,15 +3,10 @@
     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
     xmlns:vm="clr-namespace:Splitter_UI.ViewModels"
     xmlns:views="clr-namespace:Splitter_UI.Views"
-    xmlns:conv="clr-namespace:Splitter_UI.Converters"
+    xmlns:svg="clr-namespace:Avalonia.Svg.Skia;assembly=Avalonia.Svg.Skia"
     x:Class="Splitter_UI.Views.FileListView"
     x:DataType="vm:FileListViewModel">
 
-    <UserControl.Resources>
-        <conv:ZeroToBoolConverter x:Key="ZeroToBoolConverter"/>
-        <conv:RotationAngleToIconConverter x:Key="RotationAngleToIconConverter"/>
-    </UserControl.Resources>
-
     <UserControl.Styles>
         <Style Selector="views|FileListView Border#DropZone">
             <Setter Property="BorderBrush" Value="Transparent"/>
@@ -25,91 +20,75 @@
     </UserControl.Styles>
 
     <Border x:Name="DropZone"
-            Background="#1E1E1E"
-            Padding="10"
-            DragDrop.AllowDrop="True"
-            DragDrop.Drop="OnDrop"
-            DragDrop.DragOver="OnDragOver"
-            DragDrop.DragEnter="OnDragEnter"
-            DragDrop.DragLeave="OnDragLeave">
+        Background="#1E1E1E"
+        Padding="10"
+        DragDrop.AllowDrop="True"
+        DragDrop.Drop="OnDrop"
+        DragDrop.DragOver="OnDragOver"
+        DragDrop.DragEnter="OnDragEnter"
+        DragDrop.DragLeave="OnDragLeave">
 
 
-        <Grid>
 
-            <!-- Empty message -->
-            <TextBlock Text="Drag files here"
-                       HorizontalAlignment="Center"
-                       VerticalAlignment="Center"
-                       FontSize="20"
-                       Foreground="#666"
-                       IsVisible="{Binding Files.Count, Converter={StaticResource ZeroToBoolConverter}}"/>
+        <ScrollViewer>
+            <ListBox ItemsSource="{Binding Files}"
+                     SelectedItems="{Binding SelectedFiles}"
+                     SelectedItem="{Binding Selected}"
+                     SelectionMode="Multiple"
+                     BorderThickness="0"
+                     Background="Transparent">
 
-            <!-- File list -->
-            <ScrollViewer>
-                <ListBox ItemsSource="{Binding Files}"
-                         SelectedItems="{Binding SelectedFiles}"
-                         SelectedItem="{Binding Selected}"
-                         SelectionMode="Multiple"
-                         BorderThickness="0"
-                         Background="Transparent">
+                <ListBox.ItemsPanel>
+                    <ItemsPanelTemplate>
+                        <WrapPanel Orientation="Horizontal"/>
+                    </ItemsPanelTemplate>
+                </ListBox.ItemsPanel>
 
-                    <ListBox.ItemsPanel>
-                        <ItemsPanelTemplate>
-                            <WrapPanel Orientation="Horizontal"/>
-                        </ItemsPanelTemplate>
-                    </ListBox.ItemsPanel>
-
-                    <ListBox.Styles>
-                        <Style Selector="ListBoxItem:selected /template/ ContentPresenter">
-                            <Setter Property="Background" Value="#9A9A9A"/>
+                <ListBox.Styles>
+                    <Style Selector="ListBoxItem:selected /template/ ContentPresenter">
+	                    <Setter Property="Background" Value="#9A9A9A"/>	
                     </Style>
-                    </ListBox.Styles>
+                </ListBox.Styles>
+                
+                <ListBox.ItemTemplate>
+                    <DataTemplate x:DataType="vm:JobViewModel">
+                        <Border x:Name="ItemRoot"
+                                Margin="0"
+                                Padding="0"
+                                CornerRadius="4"
+                                Background="#2A2A2A">
+                            <StackPanel MinWidth="160" MaxWidth="160">
 
-                    <ListBox.ItemTemplate>
-                        <DataTemplate x:DataType="vm:JobViewModel">
-                            <Border x:Name="ItemRoot"
-                                    Margin="0"
-                                    Padding="0"
-                                    CornerRadius="4"
-                                    Background="#2A2A2A">
-                                <StackPanel MinWidth="160" MaxWidth="160">
+                                <Border Width="160" Height="90" ClipToBounds="True">
+                                    <Grid>
+                                        <Image Source="{Binding Thumbnail}"
+                                               Stretch="UniformToFill"
+                                               HorizontalAlignment="Center"
+                                               VerticalAlignment="Center"/>
 
-                                    <Border Width="160" Height="90" ClipToBounds="True">
-                                        <Grid>
-                                            <Image Source="{Binding Thumbnail}"
-                                                   Stretch="UniformToFill"
-                                                   HorizontalAlignment="Center"
-                                                   VerticalAlignment="Center"/>
+                                        <TextBlock FontFamily="{StaticResource FontAwesome}"
+                                                   Text="{Binding SuggestedAction, Converter={StaticResource ActionToIconConverter}}"
+                                                   FontSize="12"
+                                                   HorizontalAlignment="Right"
+                                                   Foreground="LimeGreen"/>
+                                    </Grid>
+                                </Border>
 
-                                            <TextBlock FontFamily="{StaticResource FontAwesome}"
-                                                       Text="{Binding SuggestedAction, Converter={StaticResource ActionToIconConverter}}"
-                                                       FontSize="12"
-                                                       HorizontalAlignment="Right"
-                                                       Foreground="LimeGreen"/>
-                                            <TextBlock FontFamily="{StaticResource FontAwesome}"
-                                                       Text="{Binding Rotate, Converter={StaticResource RotationAngleToIconConverter}}"
-                                                       FontSize="12"
-                                                       HorizontalAlignment="Left"
-                                                       Foreground="LimeGreen"/>
-                                        </Grid>
-                                    </Border>
+                                <TextBlock Text="{Binding FileName}"
+                                           TextWrapping="Wrap"
+                                           Margin="0,6,0,0"
+                                           FontSize="10"/>
 
-                                    <TextBlock Text="{Binding FileName}"
-                                               TextWrapping="Wrap"
-                                               Margin="0,6,0,0"
-                                               FontSize="10"/>
-
-                                    <ProgressBar MinWidth="160"
-                                                 MaxWidth="160"
-                                                 Height="10"
-                                                 Margin="0,4,0,0"
-                                                 Value="{Binding Progress.Percent}" />
-                                </StackPanel>
-                            </Border>
-                        </DataTemplate>
-                    </ListBox.ItemTemplate>
-                </ListBox>
-            </ScrollViewer>
-        </Grid>
+                                <ProgressBar MinWidth="160"
+                                             MaxWidth="160"
+                                             Height="10"
+                                             Margin="0,4,0,0"
+                                             Value="{Binding Progress.Percent}" />
+                            </StackPanel>
+                        </Border>
+                    </DataTemplate>
+                </ListBox.ItemTemplate>
+            </ListBox>
+        </ScrollViewer>
     </Border>
 </UserControl>

Splitter-UI/Views/InspectorPane.axaml

@@ -12,9 +12,8 @@ x:DataType="vm:InspectorPaneViewModel">
                 <TextBlock Text="Parameters" FontSize="10" Margin="0,0,0,10" FontWeight="Bold"/>
 
                 <!-- InputFile -->
-                <StackPanel Orientation="Vertical" Spacing="8">
-                    <TextBlock Text="{Binding Selected.FileName}" Width="360" Margin="0,0,0,5" FontStyle="Italic"/>
-                    <TextBlock Text="{Binding Selected.TextDesc}" Width="360" FontSize="10" Margin="0,0,0,10" FontWeight="Bold" Foreground="#676767"/>
+                <StackPanel Orientation="Horizontal" Spacing="8">
+                    <TextBlock Text="{Binding Selected.FileName}" Width="360" Margin="0,0,0,10" FontStyle="Italic"/>
                 </StackPanel>
 
                 <!-- Rotate -->
@@ -114,22 +113,13 @@ x:DataType="vm:InspectorPaneViewModel">
                 <DataGrid ItemsSource="{Binding Selected.ParametersList}"
                                 AutoGenerateColumns="False"
                                 HeadersVisibility="Column"
-                                Margin="0,0,20,0"
                                 Height="160">
 
                     <DataGrid.Columns>
 
-                        <DataGridTemplateColumn Header="Key" Width="*">
-                            <DataGridTemplateColumn.CellTemplate>
-                                <DataTemplate>
-                                    <TextBlock Text="{Binding Key}"
-                                               FontSize="10"
-                                               TextTrimming="CharacterEllipsis"
-                                               ToolTip.Tip="{Binding Key}">
-                                    </TextBlock>
-                                </DataTemplate>
-                            </DataGridTemplateColumn.CellTemplate>
-                        </DataGridTemplateColumn>
+                        <DataGridTextColumn Header="Key"
+                                                  Binding="{Binding Key}"
+                                                  Width="*"/>
 
                         <DataGridTemplateColumn Header="Value" Width="2*">
                             <DataGridTemplateColumn.CellTemplate>

Splitter-UI/Views/MainWindow.axaml

@@ -6,7 +6,7 @@
     x:Class="Splitter_UI.Views.MainWindow"
     x:DataType="vm:MainViewModel"
     Width="1400"
-    Height="950"
+    Height="900"
     Title="Splitter UI">
 
     <DockPanel>
@@ -20,7 +20,7 @@
                        DataContext="{Binding LogPane}" />
 
         <!-- Main Content -->
-        <Grid ColumnDefinitions="2*,3*,430">
+        <Grid ColumnDefinitions="2*,3*,2*">
 
             <!-- File List -->
             <views:FileListView Grid.Column="0"

Splitter-UI/Views/PreviewCanvas.cs

@@ -1,100 +0,0 @@
-using System.ComponentModel;
-using Avalonia;
-using Avalonia.Controls;
-using Avalonia.Media;
-using Avalonia.Threading;
-
-namespace Splitter_UI.Views;
-
-public sealed class PreviewCanvas : Control
-{
-    public static readonly StyledProperty<PreviewData?> PreviewProperty =
-        AvaloniaProperty.Register<PreviewCanvas, PreviewData?>(nameof(Preview));
-
-    public PreviewData? Preview
-    {
-        get => GetValue(PreviewProperty);
-        set => SetValue(PreviewProperty, value);
-    }
-
-    static PreviewCanvas()
-    {
-        PreviewProperty.Changed.AddClassHandler<PreviewCanvas>(
-            (canvas, args) =>
-                canvas.OnPreviewChanged(args.OldValue as PreviewData,
-                                        args.NewValue as PreviewData));
-    }
-
-    private void OnPreviewChanged(PreviewData? oldValue, PreviewData? newValue)
-    {
-        if (oldValue is INotifyPropertyChanged oldNotify)
-            oldNotify.PropertyChanged -= PreviewPropertyChanged;
-
-        if (newValue is INotifyPropertyChanged newNotify)
-            newNotify.PropertyChanged += PreviewPropertyChanged;
-
-        // Always marshal to UI thread
-        Dispatcher.UIThread.Post(InvalidateVisual, DispatcherPriority.Render);
-    }
-
-    private void PreviewPropertyChanged(object? sender, PropertyChangedEventArgs e)
-    {
-        if (e.PropertyName == nameof(PreviewData.Frame) ||
-            e.PropertyName == nameof(PreviewData.DetectedBoxes) ||
-            e.PropertyName == nameof(PreviewData.CropRect))
-        {
-            // Always marshal to UI thread
-            Dispatcher.UIThread.Post(InvalidateVisual, DispatcherPriority.Render);
-        }
-    }
-
-    protected override Size MeasureOverride(Size availableSize) => availableSize;
-    protected override Size ArrangeOverride(Size finalSize) => finalSize;
-
-    public override void Render(DrawingContext context)
-    {
-        var preview = Preview;
-        if (preview?.Frame is null)
-            return;
-        
-        var frame = preview.Frame;
-        var rawW = frame.PixelSize.Width;
-        var rawH = frame.PixelSize.Height;
-
-        var dispW = Bounds.Width;
-        var dispH = Bounds.Height;
-
-        if (dispW <= 0 || dispH <= 0)
-            return;
-
-        var scale = Math.Min(dispW / rawW, dispH / rawH);
-
-        var scaledW = rawW * scale;
-        var scaledH = rawH * scale;
-
-        var offsetX = (dispW - scaledW) / 2;
-        var offsetY = (dispH - scaledH) / 2;
-
-        // draw frame
-        context.DrawImage(frame,
-            new Rect(0, 0, rawW, rawH),
-            new Rect(offsetX, offsetY, scaledW, scaledH));
-
-        // draw overlays
-        if (preview.DetectedBoxes  is { Count: > 0 })
-        {
-            var pen = new Pen(Brushes.Lime, 2);
-
-            foreach (var r in preview.DetectedBoxes )
-            {
-                var rr = new Rect(
-                    offsetX + r.X * scale,
-                    offsetY + r.Y * scale,
-                    r.Width * scale,
-                    r.Height * scale);
-
-                context.DrawRectangle(null, pen, rr);
-            }
-        }
-    }
-}

Splitter-UI/Views/PreviewPane.axaml

@@ -1,57 +1,24 @@
 <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"
+    xmlns:vm="clr-namespace:Splitter_UI.ViewModels"
     x:DataType="vm:PreviewPaneViewModel">
 
     <Border Background="#202020" Padding="10">
-        <Grid RowDefinitions="*,Auto">
-
-            <local:PreviewCanvas
-                Grid.Row="0"
-                Preview="{Binding Preview}" />
-
-            <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>
+            <Image Source="{Binding Selected.Preview.Frame}" Stretch="Uniform"/>
 
+            <!-- Optional overlays -->
+            <ItemsControl ItemsSource="{Binding Selected.Preview.FaceBoxes}">
+                <ItemsControl.ItemTemplate>
+                    <DataTemplate>
+                        <Border BorderBrush="Lime" BorderThickness="2"
+                                Width="{Binding Width}" Height="{Binding Height}"
+                                Canvas.Left="{Binding X}" Canvas.Top="{Binding Y}"/>
+                    </DataTemplate>
+                </ItemsControl.ItemTemplate>
+            </ItemsControl>
         </Grid>
     </Border>
 </UserControl>
-

Splitter-UI/Views/PreviewPane.axaml.cs

@@ -1,8 +1,4 @@
-using Avalonia;
 using Avalonia.Controls;
-using Avalonia.Controls.Primitives;
-using Avalonia.Input;
-using Avalonia.VisualTree;
 
 namespace Splitter_UI.Views;
 
@@ -12,5 +8,4 @@ public partial class PreviewPane : UserControl
     {
         InitializeComponent();
     }
-
 }

splitter-cli/TrackingSplitter.cs

@@ -170,7 +170,16 @@ public class TrackingSplitter : LoggingBase, ISegmentProcessor, IDisposable
         var ss = start .ToString("0.###", CultureInfo.InvariantCulture);
         var t  = length.ToString("0.###", CultureInfo.InvariantCulture);
 
-        var rotateStr = GetRorationArg(rotate);
+        var rotateStr = "";
+        if (rotate != null)
+        {
+            switch (rotate.Value)
+            {
+                case 90:  rotateStr = ",transpose=1";  break;
+                case 180: rotateStr = ",transpose=PI"; break;
+                case 270: rotateStr = ",transpose=2";  break;
+            }
+        }
 
         var args =
     $"-i \"{inputFile}\" -ss {ss} -t {t} " +
@@ -208,22 +217,6 @@ public class TrackingSplitter : LoggingBase, ISegmentProcessor, IDisposable
         return p;
     }
 
-    public static string GetRorationArg(int? rotate)
-    {
-        var rotateStr = "";
-        if (rotate != null)
-        {
-            switch (rotate.Value)
-            {
-                case 90: rotateStr = ",transpose=1"; break;
-                case 180: rotateStr = ",transpose=PI"; break;
-                case 270: rotateStr = ",transpose=2"; break;
-            }
-        }
-
-        return rotateStr;
-    }
-
     private Process StartFfmpegEncode(
         string inputFile,
         string outputFile,