Adding Multible File Support

Added the neccesary functions to support batch processing.

butterflow-ui/BoolVisibilityConverter.cs

@@ -0,0 +1,35 @@
+using System;
+using System.Collections.Generic;
+using System.Globalization;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows;
+using System.Windows.Data;
+
+namespace butterflow_ui
+{
+    [ValueConversion(typeof(bool), typeof(Visibility))]
+    public class BoolVisibilityConverter : IValueConverter
+    {
+        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            if (targetType == typeof(Visibility))
+            {
+                return (bool)value ? Visibility.Visible : Visibility.Hidden;
+            }
+
+            throw new InvalidCastException(string.Format("Cannot convert type to {0} from bool.", targetType.Name));
+        }
+
+        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            if (targetType == typeof(Visibility))
+            {
+                return ((Visibility)value == Visibility.Visible) ? true : false;
+            }
+
+            throw new InvalidCastException(string.Format("Cannot convert type {0} to boolean.", targetType.Name));
+        }
+    }
+}

butterflow-ui/ButterflowWrapper.cs

@@ -27,6 +27,8 @@ namespace butterflow_ui
 
         /// <summary> Full pathname of the butterflow executable file. </summary>
         private Lazy<string> executablePath = new Lazy<string>(() => Path.Combine(Directory.GetCurrentDirectory(), "ThirdPartyCompiled", "butterflow.exe"));
+        /// <summary> Queue of butterflow commands to run. </summary>
+        private Queue<string> runQueue = new Queue<string>();
         /// <summary> The console output from butterflow. </summary>
         private string consoleOutput = string.Empty;
         /// <summary> True if butterflow is running, false if not. </summary>
@@ -93,38 +95,26 @@ namespace butterflow_ui
 
         #region Methods
 
-        /// <summary> Runs butterflow with the given <paramref name="optionsConfiguration"/>. </summary>
+        /// <summary> Runs butterflow with the given <paramref name="optionsConfiguration"/> by adding it to the queue. </summary>
         /// <param name="optionsConfiguration"> The options configuration. </param>
         public void Run(OptionsConfiguration optionsConfiguration)
         {
-            string arguments = optionsConfiguration.ToButterflowArguments();
+            for(int i = 0; i < optionsConfiguration.VideoInput.Count(); i++)
-
-            Run(arguments);
-        }
-
-        /// <summary> Kills the running instance of butterflow, cancelling its current operation. </summary>
-        public void Cancel()
-        {
-            if(this.IsRunning && this.runningProcess != null)
             {
-                this.runningProcess.Kill();
+                var arguments = optionsConfiguration.ToButterflowArguments(i);
+                this.runQueue.Enqueue(arguments);
             }
+
+            ProcessQueue();
         }
 
-        /// <summary> Probes a video file. </summary>
+        /// <summary> Process the queue of butterflow arguments. </summary>
-        /// <param name="videoFile"> The video file to be probed. </param>
+        public void ProcessQueue()
-        public void Probe(string videoFile)
         {
-            string arguments = string.Format("-prb \"{0}\"", videoFile);
+            if (!this.IsRunning && this.runQueue.Any())
-            Run(arguments);
-        }
-
-        /// <summary> Runs butterflow with the given <paramref name="arguments"/>. </summary>
-        /// <param name="arguments">     Options for controlling the operation. </param>
-        private void Run(string arguments)
-        {
-            if (!this.IsRunning)
             {
+                var arguments = this.runQueue.Dequeue();
+
                 var process = new Process();
                 process.StartInfo = new ProcessStartInfo(executablePath.Value, arguments);
 
@@ -146,6 +136,34 @@ namespace butterflow_ui
             }
         }
 
+        /// <summary> Kills the running instance of butterflow, cancelling its current operation. </summary>
+        public void Cancel()
+        {
+            if(this.IsRunning && this.runningProcess != null)
+            {
+                this.runningProcess.Kill();
+            }
+
+            this.runQueue.Clear();
+        }
+
+        /// <summary> Probes a video file. </summary>
+        /// <param name="videoFile"> The video file to be probed. </param>
+        public void Probe(string videoFile)
+        {
+            string arguments = string.Format("-prb \"{0}\"", videoFile);
+            Run(arguments);
+        }
+
+        /// <summary> Runs butterflow with the given <paramref name="arguments"/> by adding it to the queue. </summary>
+        /// <param name="arguments">     Options for controlling the operation. </param>
+        private void Run(string arguments)
+        {
+            this.runQueue.Enqueue(arguments);
+
+            ProcessQueue();
+        }
+
         /// <summary> Event handler. Called by Process for exited events. </summary>
         /// <param name="sender"> Source of the event. </param>
         /// <param name="e">      Event information. </param>
@@ -153,6 +171,8 @@ namespace butterflow_ui
         {
             this.IsRunning = false;
             this.runningProcess = null;
+
+            ProcessQueue();
         }
 
         /// <summary>

butterflow-ui/InverseBoolVisibilityConverter.cs

@@ -0,0 +1,35 @@
+using System;
+using System.Collections.Generic;
+using System.Globalization;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows;
+using System.Windows.Data;
+
+namespace butterflow_ui
+{
+    [ValueConversion(typeof(bool), typeof(Visibility))]
+    public class InverseBoolVisibilityConverter : IValueConverter
+    {
+        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            if (targetType == typeof(Visibility))
+            {
+                return (bool)value ? Visibility.Hidden : Visibility.Visible;
+            }
+
+            throw new InvalidCastException(string.Format("Cannot convert type to {0} from bool.", targetType.Name));
+        }
+
+        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            if (targetType == typeof(Visibility))
+            {
+                return ((Visibility)value == Visibility.Visible) ? false : true;
+            }
+
+            throw new InvalidCastException(string.Format("Cannot convert type {0} to boolean.", targetType.Name));
+        }
+    }
+}

butterflow-ui/Localization/Localization.Designer.cs

@@ -465,6 +465,24 @@ namespace butterflow_ui.Localization {
             }
         }
         
+        /// <summary>
+        ///   Looks up a localized string similar to Video previewing and subregion clipping is not available when processing multiple files..
+        /// </summary>
+        public static string MultipleFilesPreviewWarningLabel {
+            get {
+                return ResourceManager.GetString("MultipleFilesPreviewWarningLabel", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   Looks up a localized string similar to [Multiple Files].
+        /// </summary>
+        public static string MultipleFilesText {
+            get {
+                return ResourceManager.GetString("MultipleFilesText", resourceCulture);
+            }
+        }
+        
         /// <summary>
         ///   Looks up a localized string similar to OK.
         /// </summary>

butterflow-ui/Localization/Localization.resx

@@ -360,4 +360,10 @@
   <data name="VersionLabel" xml:space="preserve">
     <value>Version</value>
   </data>
+  <data name="MultipleFilesPreviewWarningLabel" xml:space="preserve">
+    <value>Video previewing and subregion clipping is not available when processing multiple files.</value>
+  </data>
+  <data name="MultipleFilesText" xml:space="preserve">
+    <value>[Multiple Files]</value>
+  </data>
 </root>

butterflow-ui/MainWindow.xaml

@@ -25,6 +25,8 @@
             </ObjectDataProvider.MethodParameters>
         </ObjectDataProvider>
         <butterflow_ui:InverseBoolConverter x:Key="InverseBoolConverter" />
+        <butterflow_ui:BoolVisibilityConverter x:Key="BoolVisibilityConverter" />
+        <butterflow_ui:InverseBoolVisibilityConverter x:Key="InverseBoolVisibilityConverter" />
     </Window.Resources>
     <DockPanel>
         <Menu DockPanel.Dock="Top">
@@ -94,7 +96,7 @@
                             <ColumnDefinition Width="Auto" />
                         </Grid.ColumnDefinitions>
                         <Label Grid.Column="0" Content="{x:Static loc:Localization.FileLabel}"/>
-                        <TextBox Name="txtFileName" Grid.Column="1" IsReadOnly="True" Text="{Binding OptionsConfiguration.VideoInput, Mode=TwoWay, RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type butterflow_ui:MainWindow}}, UpdateSourceTrigger=PropertyChanged}"/>
+                        <TextBox Name="txtFileName" Grid.Column="1" IsReadOnly="True"/>
                         <Button Grid.Column="2" MinWidth="25" Name="btnFilePicker" Click="btnFilePicker_Click">...</Button>
                     </Grid>
                 </GroupBox>
@@ -106,7 +108,7 @@
                             <ColumnDefinition Width="Auto" />
                         </Grid.ColumnDefinitions>
                         <Label Grid.Column="0" Content="{x:Static loc:Localization.FileLabel}"/>
-                        <TextBox Name="txtFileOutputName" Grid.Column="1" IsReadOnly="True" Text="{Binding OptionsConfiguration.VideoOutput, Mode=TwoWay, RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type butterflow_ui:MainWindow}}, UpdateSourceTrigger=PropertyChanged}"/>
+                        <TextBox Name="txtFileOutputName" Grid.Column="1" IsReadOnly="True" Text="{Binding OptionsConfiguration.VideoOutput, Mode=OneWay, RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type butterflow_ui:MainWindow}}, UpdateSourceTrigger=PropertyChanged}"/>
                         <Button Grid.Column="2" MinWidth="25" Name="btnFileOutputPicker" Click="btnFileOutputPicker_Click">...</Button>
                     </Grid>
                 </GroupBox>
@@ -307,8 +309,11 @@
                         </ProgressBar.Style>
                     </ProgressBar>
                 </Grid>
-                <gu:MediaElementWrapper Grid.Row="1" Name="mediaPreview" Stretch="Uniform" ScrubbingEnabled="True" Source="{Binding OptionsConfiguration.VideoInput, Mode=TwoWay, RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type butterflow_ui:MainWindow}}, UpdateSourceTrigger=PropertyChanged}" MediaOpened="mediaPreview_MediaOpened" MediaEnded="mediaPreview_MediaEnded" />
+                <Canvas x:Name="canvas" Grid.Row="1" Grid.RowSpan="3" Visibility="{Binding OptionsConfiguration.MultipleFiles, Mode=OneWay, RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type butterflow_ui:MainWindow}}, UpdateSourceTrigger=PropertyChanged, Converter={StaticResource BoolVisibilityConverter}}">
-                <Grid Grid.Row="2">
+                    <TextBlock TextAlignment="Center" VerticalAlignment="Center" Width="{Binding ActualWidth, ElementName=canvas}" Height="{Binding ActualHeight, ElementName=canvas}" TextWrapping="WrapWithOverflow" Text="{x:Static loc:Localization.MultipleFilesPreviewWarningLabel}" />
+                </Canvas>
+                <gu:MediaElementWrapper Grid.Row="1" Name="mediaPreview" Stretch="Uniform" ScrubbingEnabled="True" MediaOpened="mediaPreview_MediaOpened" MediaEnded="mediaPreview_MediaEnded" Visibility="{Binding OptionsConfiguration.MultipleFiles, Mode=OneWay, RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type butterflow_ui:MainWindow}}, UpdateSourceTrigger=PropertyChanged, Converter={StaticResource InverseBoolVisibilityConverter}}" />
+                <Grid Grid.Row="2" Visibility="{Binding OptionsConfiguration.MultipleFiles, Mode=OneWay, RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type butterflow_ui:MainWindow}}, UpdateSourceTrigger=PropertyChanged, Converter={StaticResource InverseBoolVisibilityConverter}}">
                     <Grid.ColumnDefinitions>
                         <ColumnDefinition Width="Auto" />
                         <ColumnDefinition Width="*" />
@@ -320,7 +325,7 @@
                             Maximum="{Binding Path=Length, ElementName=mediaPreview, Converter={x:Static gu:NullableTimeSpanToSecondsConverter.Default}}" />
                     <Label Grid.Column="2" Content="{Binding Path=Length, ElementName=mediaPreview, Converter={x:Static gu:TimeSpanToStringConverter.Default}}" />
                 </Grid>
-                <StackPanel Grid.Row="3" Orientation="Horizontal" HorizontalAlignment="Center">
+                <StackPanel Grid.Row="3" Orientation="Horizontal" HorizontalAlignment="Center" Visibility="{Binding OptionsConfiguration.MultipleFiles, Mode=OneWay, RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type butterflow_ui:MainWindow}}, UpdateSourceTrigger=PropertyChanged, Converter={StaticResource InverseBoolVisibilityConverter}}">
                     <Button Name="bntVideoBackward" BorderThickness="0" Style="{StaticResource {x:Static ToolBar.ButtonStyleKey}}" Click="bntVideoBackward_Click">
                         <ContentControl HorizontalAlignment="Center" Template="{StaticResource BackwardIcon}" />
                     </Button>

butterflow-ui/MainWindow.xaml.cs

@@ -110,18 +110,29 @@ namespace butterflow_ui
         private void btnFilePicker_Click(object sender, RoutedEventArgs e)
         {
             var ofd = new OpenFileDialog();
+            ofd.Multiselect = true;
             ofd.Filter = "Supported Video Files|*.3dostr;*.3g2;*.3gp;*.4xm;*.a64;*.aa;*.aac;*.ac3;*.acm;*.act;*.adf;*.adp;*.ads;*.adts;*.adx;*.aea;*.afc;*.aiff;*.aix;*.alaw;*.alias_pix;*.alsa;*.amr;*.anm;*.apc;*.ape;*.apng;*.aqtitle;*.asf;*.asf_o;*.asf_stream;*.ass;*.ast;*.au;*.avi;*.avisynth;*.avm2;*.avr;*.avs;*.bethsoftvid;*.bfi;*.bfstm;*.bin;*.bink;*.bit;*.bmp_pipe;*.bmv;*.boa;*.brender_pix;*.brstm;*.c93;*.caca;*.caf;*.cavsvideo;*.cdg;*.cdxl;*.chromaprint;*.cine;*.concat;*.crc;*.dash;*.data;*.daud;*.dcstr;*.dds_pipe;*.dfa;*.dirac;*.dnxhd;*.dpx_pipe;*.dsf;*.dsicin;*.dss;*.dts;*.dtshd;*.dv;*.dv1394;*.dvbsub;*.dvbtxt;*.dvd;*.dxa;*.ea;*.ea_cdata;*.eac3;*.epaf;*.exr_pipe;*.f32be;*.f32le;*.f4v;*.f64be;*.f64le;*.fbdev;*.ffm;*.ffmetadata;*.fifo;*.film_cpk;*.filmstrip;*.flac;*.flic;*.flv;*.framecrc;*.framehash;*.framemd5;*.frm;*.fsb;*.g722;*.g723_1;*.g729;*.genh;*.gif;*.gsm;*.gxf;*.h261;*.h263;*.h264;*.hash;*.hds;*.hevc;*.hls;*.hls;*.applehttp;*.hnm;*.ico;*.idcin;*.idf;*.iec61883;*.iff;*.ilbc;*.image2;*.image2pipe;*.ingenient;*.ipmovie;*.ipod;*.ircam;*.ismv;*.iss;*.iv8;*.ivf;*.ivr;*.j2k_pipe;*.jack;*.jacosub;*.jpeg_pipe;*.jpegls_pipe;*.jv;*.latm;*.lavfi;*.libcdio;*.libdc1394;*.libgme;*.libopenmpt;*.live_flv;*.lmlm4;*.loas;*.lrc;*.lvf;*.lxf;*.m4v;*.matroska;*.matroska;*.webm;*.md5;*.mgsts;*.microdvd;*.mjpeg;*.mkvtimestamp_v2;*.mkv;*.mlp;*.mlv;*.mm;*.mmf;*.mov;*.mov;*.mp4;*.m4a;*.3gp;*.3g2;*.mj2;*.mp2;*.mp3;*.mp4;*.mpc;*.mpc8;*.mpeg;*.mpeg1video;*.mpeg2video;*.mpegts;*.mpegtsraw;*.mpegvideo;*.mpjpeg;*.mpl2;*.mpsub;*.msf;*.msnwctcp;*.mtaf;*.mtv;*.mulaw;*.musx;*.mv;*.mvi;*.mxf;*.mxf_d10;*.mxf_opatom;*.mxg;*.nc;*.nistsphere;*.nsv;*.null;*.nut;*.nuv;*.oga;*.ogg;*.ogv;*.oma;*.openal;*.opengl;*.opus;*.oss;*.paf;*.pam_pipe;*.pbm_pipe;*.pcx_pipe;*.pgm_pipe;*.pgmyuv_pipe;*.pictor_pipe;*.pjs;*.pmp;*.png_pipe;*.ppm_pipe;*.psp;*.psxstr;*.pulse;*.pva;*.pvf;*.qcp;*.qdraw_pipe;*.r3d;*.rawvideo;*.realtext;*.redspark;*.rl2;*.rm;*.roq;*.rpl;*.rsd;*.rso;*.rtp;*.rtp_mpegts;*.rtsp;*.s16be;*.s16le;*.s24be;*.s24le;*.s32be;*.s32le;*.s8;*.sami;*.sap;*.sbg;*.sdl;*.sdl2;*.sdp;*.sdr2;*.segment;*.sgi_pipe;*.shn;*.siff;*.singlejpeg;*.sln;*.smjpeg;*.smk;*.smoothstreaming;*.smush;*.sndio;*.sol;*.sox;*.spdif;*.spx;*.srt;*.stl;*.stream_segment;*.ssegment;*.subviewer;*.subviewer1;*.sunrast_pipe;*.sup;*.svag;*.svcd;*.swf;*.tak;*.tedcaptions;*.tee;*.thp;*.tiertexseq;*.tiff_pipe;*.tmv;*.truehd;*.tta;*.tty;*.txd;*.u16be;*.u16le;*.u24be;*.u24le;*.u32be;*.u32le;*.u8;*.uncodedframecrc;*.v210;*.v210x;*.v4l2;*.vag;*.vc1;*.vc1test;*.vcd;*.video4linux2;*.v4l2;*.vivo;*.vmd;*.vob;*.vobsub;*.voc;*.vpk;*.vplayer;*.vqf;*.w64;*.wav;*.wc3movie;*.webm;*.webm_chunk;*.webm_dash_manifest;*.webp;*.webp_pipe;*.webvtt;*.wsaud;*.wsd;*.wsvqa;*.wtv;*.wv;*.wve;*.x11grab;*.xa;*.xbin;*.xmv;*.xv;*.xvag;*.xwma;*.yop;*.yuv4mpegpipe";
 
             var result = ofd.ShowDialog(this);
             if (result.HasValue && result.Value)
             {
-                this.OptionsConfiguration.VideoInput = ofd.FileName;
+                this.OptionsConfiguration.VideoInput = ofd.FileNames;
-
                 this.ButterflowWrapper.Probe(ofd.FileName);
 
-                //Hack to get the first frame to display in the media preview element.
+                if (ofd.FileNames.Count() == 1)
-                mediaPreview.Play();
+                {
-                mediaPreview.PausePlayback();
+                    this.txtFileName.Text = ofd.FileName;
+                    this.mediaPreview.Source = new Uri(ofd.FileName);
+
+                    //Hack to get the first frame to display in the media preview element.
+                    this.mediaPreview.Play();
+                    this.mediaPreview.PausePlayback();
+                }
+                else
+                {
+                    this.txtFileName.Text = Localization.Localization.MultipleFilesText;
+                    this.mediaPreview.Source = default(Uri);
+                }
             }
         }
 

butterflow-ui/OptionsConfiguration.cs

@@ -2,6 +2,7 @@
 using System.Collections.Generic;
 using System.Collections.ObjectModel;
 using System.ComponentModel;
+using System.IO;
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
@@ -29,6 +30,8 @@ namespace butterflow_ui
         private const decimal DEFAULT_SMOOTH_DERIVATIVE_STANDARD_DEVIATION = 1.1m;
         /// <summary> The default flow filter type setting. </summary>
         private const FlowFilterType DEFAULT_FLOW_FILTER_TYPE = FlowFilterType.box;
+        /// <summary> The output file format when operating on more than one video. </summary>
+        private const string OUTPUT_FILE_FORMAT = "{0}_{1}";
 
         /// <summary> An input interpreter used for converting string values to numeric values. </summary>
         [NonSerialized]
@@ -52,8 +55,8 @@ namespace butterflow_ui
         private bool smoothMotion;
         /// <summary> A value indicating whether or not to lock the aspect ratio to the <seealso cref="width"/> of the video. </summary>
         private bool lockAspectRatio;
-        /// <summary> The video input file. </summary>
+        /// <summary> The video input files. </summary>
-        private string videoInput;
+        private IEnumerable<string> videoInput;
         /// <summary> The video output file. </summary>
         private string videoOutput;
         /// <summary> A value indicating whether or not to use fast pyramids when processing a video. </summary>
@@ -89,6 +92,16 @@ namespace butterflow_ui
             }
         }
 
+        /// <summary> Gets a value indicating whether butterflow will process multiple files. </summary>
+        /// <value> True if butterflow will process multiple files, false if not. </value>
+        public bool MultipleFiles
+        {
+            get
+            {
+                return this.VideoInput != null && this.VideoInput.Count() > 1;
+            }
+        }
+
         /// <summary> Gets or sets the playback rate. </summary>
         /// <value> The playback rate. </value>
         public string PlaybackRate
@@ -229,7 +242,7 @@ namespace butterflow_ui
 
         /// <summary> Gets or sets the video input file path. </summary>
         /// <value> The video input file path. </value>
-        public string VideoInput
+        public IEnumerable<string> VideoInput
         {
             get
             {
@@ -239,6 +252,7 @@ namespace butterflow_ui
             {
                 this.videoInput = value;
                 OnPropertyChanged();
+                OnPropertyChanged("MultipleFiles");
             }
         }
 
@@ -420,6 +434,8 @@ namespace butterflow_ui
             this.smoothDerivativeStandardDeviation = DEFAULT_SMOOTH_DERIVATIVE_STANDARD_DEVIATION;
             this.flowFilterType = DEFAULT_FLOW_FILTER_TYPE;
 
+            this.videoInput = new string[0];
+
             this.subregions.CollectionChanged += Subregions_CollectionChanged; ;
         }
 
@@ -502,7 +518,7 @@ namespace butterflow_ui
 
         /// <summary> Converts this object to a butterflow options. </summary>
         /// <returns> This object as a string. </returns>
-        public string ToButterflowArguments()
+        public string ToButterflowArguments(int videoInputIndex = 0)
         {
             var stringBuilder = new StringBuilder("-v "); // Verbose
 
@@ -556,9 +572,38 @@ namespace butterflow_ui
             if (this.pixelNeighborhood != DEFAULT_PIXEL_NEIGHBORHOOD) stringBuilder.AppendFormat("--poly-n {0} ", this.PixelNeighborhood);
             if (this.smoothDerivativeStandardDeviation != DEFAULT_SMOOTH_DERIVATIVE_STANDARD_DEVIATION) stringBuilder.AppendFormat("--poly-s {0} ", this.SmoothDerivativeStandardDeviation);
             if (this.FlowFilterType != DEFAULT_FLOW_FILTER_TYPE) stringBuilder.AppendFormat("-ff {0} ", this.FlowFilterType);
-            if (!string.IsNullOrWhiteSpace(this.VideoOutput)) stringBuilder.AppendFormat("-o \"{0}\" ", this.VideoOutput);
 
-            stringBuilder.AppendFormat("\"{0}\"", this.VideoInput);
+            if (!string.IsNullOrWhiteSpace(this.VideoOutput))
+            {
+                string videoOutputFile = string.Empty;
+
+                if (this.MultipleFiles)
+                {
+                    var format = new StringBuilder(Path.GetFileNameWithoutExtension(this.VideoOutput));
+                    format.Append("_{0:");
+                    for (int i = 0; i < this.videoInput.Count().ToString().Length; i++)
+                    {
+                        format.Append("0");
+                    }
+                    format.Append("}");
+                    format.Append(Path.GetExtension(this.VideoOutput));
+
+                    var newName = string.Format(format.ToString(), videoInputIndex + 1); // Since the index is zero based, we will add one to make the output more human readable.
+
+                    videoOutputFile = Path.Combine(Path.GetDirectoryName(this.VideoOutput), newName);
+                }
+                else
+                {
+                    videoOutputFile = this.VideoOutput;
+                }
+
+                stringBuilder.AppendFormat("-o \"{0}\" ", videoOutputFile);
+            }
+
+            if (this.VideoInput.Any())
+            {
+                stringBuilder.AppendFormat("\"{0}\"", this.VideoInput.ElementAt(videoInputIndex));
+            }
 
             return stringBuilder.ToString();
         }

butterflow-ui/Properties/AssemblyInfo.cs

@@ -51,5 +51,5 @@ using System.Windows;
 // 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("1.0.1.*")]
+[assembly: AssemblyVersion("1.0.2.*")]
 [assembly: AssemblyFileVersion("1.0.0.0")]

butterflow-ui/butterflow-ui.csproj

@@ -68,8 +68,10 @@
     <Compile Include="AboutWindow.xaml.cs">
       <DependentUpon>AboutWindow.xaml</DependentUpon>
     </Compile>
+    <Compile Include="BoolVisibilityConverter.cs" />
     <Compile Include="FlowFilterType.cs" />
     <Compile Include="InverseBoolConverter.cs" />
+    <Compile Include="InverseBoolVisibilityConverter.cs" />
     <Compile Include="OptionsConfigurationFile.cs" />
     <Compile Include="OptionsWindow.xaml.cs">
       <DependentUpon>OptionsWindow.xaml</DependentUpon>