Closed captions

FoxTube/Classes/Caption.cs

@@ -0,0 +1,26 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace FoxTube.Classes
+{
+    public class Caption
+    {
+        public TimeSpan Start { get; private set; }
+        public TimeSpan Duration { get; private set; }
+        public TimeSpan End
+        {
+            get { return Start + Duration; }
+        }
+        public string Text { get; private set; }
+
+        public Caption(int startTime, int duration, string text)
+        {
+            Start = TimeSpan.FromMilliseconds(startTime);
+            Duration = TimeSpan.FromMilliseconds(duration);
+            Text = text;
+        }
+    }
+}

FoxTube/Controls/LiveCaptions.xaml

@@ -8,9 +8,9 @@
     mc:Ignorable="d"
     HorizontalAlignment="Center"
     VerticalAlignment="Bottom"
-    Margin="0,75">
+    Margin="0,55">
 
     <Grid Background="#99000000">
-        <TextBlock Text="Hello, World!" Margin="5" FontSize="24"/>
+        <TextBlock Text="Hello, World!" Name="text" Margin="5" FontSize="24"/>
     </Grid>
 </UserControl>

FoxTube/Controls/LiveCaptions.xaml.cs

@@ -1,4 +1,5 @@
-using System;
+using FoxTube.Classes;
+using System;
 using System.Collections.Generic;
 using System.IO;
 using System.Linq;
@@ -12,6 +13,8 @@ using Windows.UI.Xaml.Data;
 using Windows.UI.Xaml.Input;
 using Windows.UI.Xaml.Media;
 using Windows.UI.Xaml.Navigation;
+using System.Xml;
+using System.Diagnostics;
 
 // The User Control item template is documented at https://go.microsoft.com/fwlink/?LinkId=234236
 
@@ -19,9 +22,67 @@ namespace FoxTube.Controls
 {
     public sealed partial class LiveCaptions : UserControl
     {
+        public MediaElement Player { get; set; }
+        DispatcherTimer timer = new DispatcherTimer() { Interval = TimeSpan.FromMilliseconds(10) };
+        List<Caption> captions = new List<Caption>();
+        Caption currentCaption = null;
+
         public LiveCaptions()
         {
             this.InitializeComponent();
+            timer.Tick += UpdateCaption;
+        }
+
+        private void UpdateCaption(object sender, object e)
+        {
+            TimeSpan currentPosition = Player.Position;
+
+            bool found = false;
+            captions.ForEach((x) =>
+            {
+                if (Player.Position >= x.Start && Player.Position <= x.End)
+                {
+                    currentCaption = x;
+                    text.Text = currentCaption.Text;
+                    Visibility = Visibility.Visible;
+                    found = true;
+                }
+            });
+
+            if (!found)
+            {
+                currentCaption = null;
+                Visibility = Visibility.Collapsed;
+            }
+        }
+
+        public void Initialize(string source)
+        {
+            XmlDocument doc = new XmlDocument();
+            doc.Load(source);
+
+            foreach (XmlElement i in doc["timedtext"]["body"].ChildNodes)
+                captions.Add(new Caption(int.Parse(i.GetAttribute("t")), int.Parse(i.GetAttribute("d")), i.InnerText));
+
+            captions.ForEach((x) =>
+            {
+                if(Player.Position > x.Start && Player.Position < x.End)
+                {
+                    currentCaption = x;
+                    text.Text = currentCaption.Text;
+                    Visibility = Visibility.Visible;
+                }
+            });
+
+            timer.Start();
+        }
+
+        public void Close()
+        {
+            captions.Clear();
+            currentCaption = null;
+            Visibility = Visibility.Collapsed;
+            timer.Stop();
         }
     }
 }

FoxTube/Controls/VideoPlayer.xaml

@@ -19,7 +19,7 @@
     <Grid Background="White" Name="grid" Tapped="UserControl_Tapped">
         <MediaElement IsDoubleTapEnabled="False" CurrentStateChanged="videoSource_CurrentStateChanged" AutoPlay="False" Name="videoSource" AreTransportControlsEnabled="False" PosterSource="ms-appx:///Assets/videoThumbSample.png"/>
 
-        <controls1:LiveCaptions/>
+        <controls1:LiveCaptions Player="{x:Bind videoSource}" Visibility="Collapsed"/>
         
         <Grid Name="controls" Visibility="Visible">
             <Grid.RowDefinitions>
@@ -36,7 +36,7 @@
                 <Button Click="minimize_Click" Name="minimize" Background="Transparent" FontFamily="Segoe MDL2 Assets" Content="&#xE011;" Foreground="White" Width="50" Height="50" FontSize="25" ToolTipService.ToolTip="Minimize"/>
                 <StackPanel Grid.Column="1" Margin="10,0,10,0" VerticalAlignment="Center">
                     <TextBlock Name="title" Text="[Title]" Foreground="White" VerticalAlignment="Center" TextWrapping="WrapWholeWords" FontSize="20" MaxLines="1" ToolTipService.ToolTip="Title"/>
-                    <TextBlock Foreground="Gray" Text="[Channel name]" Name="channelName" FontStyle="Italic"/>
+                    <TextBlock Foreground="LightGray" Text="[Channel name]" Name="channelName" FontStyle="Italic"/>
                 </StackPanel>
                 <StackPanel Grid.Column="2" Orientation="Horizontal" HorizontalAlignment="Right">
                     <Button Name="closeHeader" Click="close_Click" Background="Transparent" FontFamily="Segoe MDL2 Assets" Content="&#xE10A;" Foreground="White" Width="50" Height="50" FontSize="25" ToolTipService.ToolTip="Close video"/>
@@ -83,14 +83,17 @@
                     <StackPanel Orientation="Horizontal">
                         <Button Click="play_Click" Name="play" Background="Transparent" FontFamily="Segoe MDL2 Assets" Content="&#xE768;" Foreground="White" Width="50" Height="50" FontSize="25" ToolTipService.ToolTip="Play"/>
                         <Button Name="next" Click="next_Click" Background="Transparent" FontFamily="Segoe MDL2 Assets" Content="&#xE101;" Foreground="White" Width="50" Height="50" FontSize="25" ToolTipService.ToolTip="Next video"/>
-                        <Button Name="openVolume" Background="Transparent" FontFamily="Segoe MDL2 Assets" Content="&#xE995;" Foreground="White" Width="50" Height="50" FontSize="25" ToolTipService.ToolTip="Volume" Click="openVolume_Click"/>
+                        <Button Name="openVolume" Background="Transparent" FontFamily="Segoe MDL2 Assets" Content="&#xE995;" Foreground="White" Width="50" Height="50" FontSize="25" ToolTipService.ToolTip="Volume">
-                    </StackPanel>
+                            <Button.Flyout>
-                    <Popup Grid.Column="0" Margin="100,-200,50,0" IsOpen="False" IsLightDismissEnabled="True" Name="volumePane">
+                                <Flyout>
-                        <StackPanel Background="#7F000000" Width="50" Height="200">
+                                    <StackPanel Orientation="Horizontal" Margin="-10">
-                            <Slider Orientation="Vertical" HorizontalAlignment="Center" Height="135" Margin="5,10,10,5" Name="volume" ValueChanged="volume_ValueChanged"/>
                                         <Button Background="Transparent" FontFamily="Segoe MDL2 Assets" Content="&#xE995;" Foreground="White" Width="50" Height="50" FontSize="25" ToolTipService.ToolTip="Mute" Name="muteBtn" Click="muteBtn_Click"/>
+                                        <Slider Orientation="Horizontal" Width="150" Margin="10,5,10,0" VerticalAlignment="Center" Name="volume" ValueChanged="volume_ValueChanged"/>
+                                    </StackPanel>
+                                </Flyout>
+                            </Button.Flyout>
+                        </Button>
                     </StackPanel>
-                    </Popup>
 
                     <Grid Grid.Column="1">
                         <TextBlock Name="elapsedTime" Foreground="White" Text="[Elapsed]" VerticalAlignment="Bottom" HorizontalAlignment="Left" ToolTipService.ToolTip="Time elapsed"/>
@@ -104,23 +107,20 @@
 
                         <Line Stroke="White" StrokeThickness="2" Y1="5" Y2="45"/>
 
-                        <Button Background="Transparent" FontFamily="Segoe MDL2 Assets" Content="&#xE190;" Foreground="White" Width="50" Height="50" FontSize="25" ToolTipService.ToolTip="Subtitles" Name="openSubs" Click="openSubs_Click"/>
+                        <Button Background="Transparent" FontFamily="Segoe MDL2 Assets" Content="&#xE190;" Foreground="White" Width="50" Height="50" FontSize="25" ToolTipService.ToolTip="Subtitles" Name="captionsBtn">
-                        <Button Background="Transparent" FontFamily="Segoe MDL2 Assets" Content="&#xE713;" Foreground="White" Width="50" Height="50" FontSize="25" ToolTipService.ToolTip="Video quality" Name="openSets" Click="openSets_Click"/>
+                            <Button.Flyout>
-                        <Button Background="Transparent" FontFamily="Segoe MDL2 Assets" Content="&#xE740;" Foreground="White" Width="50" Height="50" FontSize="25" ToolTipService.ToolTip="Full screen" Name="fullscreen" Click="fullscreen_Click"/>
+                                <Flyout>
+                                    <StackPanel Width="225">
+                                        <ToggleSwitch Name="subsSwitch" Toggled="subsSwitch_Toggled" OnContent="Subtitles" OffContent="Subtitles"/>
+                                        <ComboBox Name="subsLang" Header="Language" PlaceholderText="No subtitles are available" Visibility="Collapsed" HorizontalAlignment="Stretch" SelectionChanged="subsLang_SelectionChanged"/>
                                     </StackPanel>
-
+                                </Flyout>
-                    <Popup Grid.Column="2" Margin="0,-100,50,0" IsOpen="False" IsLightDismissEnabled="True" Name="subsPane">
+                            </Button.Flyout>
-                        <StackPanel Background="#7F000000" Width="252" Height="100" Padding="10">
+                        </Button>
-                            <ToggleSwitch Name="subsSwitch" Toggled="subsSwitch_Toggled" Foreground="White" OffContent="Show subtitles" OnContent="Show subtitles"/>
+                        <Button Background="Transparent" FontFamily="Segoe MDL2 Assets" Content="&#xE713;" Foreground="White" Width="50" Height="50" FontSize="25" ToolTipService.ToolTip="Video quality">
-                            <ComboBox Name="subsLang" Width="232" PlaceholderText="No subtitles are available"/>
+                            <Button.Flyout>
-                        </StackPanel>
+                                <Flyout>
-                    </Popup>
+                                    <ComboBox Width="225" Header="Quality" Name="quality" SelectionChanged="quality_SelectionChanged">
-
-                    <Popup Grid.Column="2" IsOpen="False" Margin="0,-75,0,0" IsLightDismissEnabled="True" Name="qualityPane">
-                        <StackPanel Background="#7F000000" Width="252" Height="75" Padding="10">
-                            <TextBlock Text="Quality" Foreground="White"/>
-                            <Line X1="0" X2="232" Stroke="White" StrokeThickness="2"/>
-                            <ComboBox Width="232" Name="quality" SelectionChanged="quality_SelectionChanged">
                                         <!--<ComboBoxItem Content="Auto"/>-->
                                         <ComboBoxItem Content="2160P" Visibility="Collapsed"/>
                                         <ComboBoxItem Content="1080p" Visibility="Collapsed"/>
@@ -130,8 +130,11 @@
                                         <ComboBoxItem Content="240p" Visibility="Collapsed"/>
                                         <ComboBoxItem Content="144p" Visibility="Collapsed"/>
                                     </ComboBox>
+                                </Flyout>
+                            </Button.Flyout>
+                        </Button>
+                        <Button Background="Transparent" FontFamily="Segoe MDL2 Assets" Content="&#xE740;" Foreground="White" Width="50" Height="50" FontSize="25" ToolTipService.ToolTip="Full screen" Name="fullscreen" Click="fullscreen_Click"/>
                     </StackPanel>
-                    </Popup>
                 </Grid>
             </Grid>
         </Grid>

FoxTube/Controls/VideoPlayer.xaml.cs

@@ -20,7 +20,6 @@ using Microsoft.Toolkit.Uwp.UI.Animations;
 using Google.Apis.YouTube.v3.Data;
 using Google.Apis.YouTube.v3;
 using Windows.UI.Xaml.Media.Imaging;
-using MyToolkit.Multimedia;
 using Windows.Networking.Connectivity;
 using System.Diagnostics;
 using Windows.Media;
@@ -32,6 +31,10 @@ using Windows.UI;
 using Windows.Graphics.Display;
 using Windows.Media.Casting;
 using YoutubeExplode.Models.MediaStreams;
+using YoutubeExplode;
+using YoutubeExplode.Models.ClosedCaptions;
+using System.Globalization;
+using FoxTube.Controls;
 
 // The User Control item template is documented at https://go.microsoft.com/fwlink/?LinkId=234236
 
@@ -56,11 +59,15 @@ namespace FoxTube
 
         Video item;
         string avatar;
-        double timecodeBackup;
+        double timecodeBackup = 0;
+        bool needUpdateTimecode = false;
 
         SystemMediaTransportControls systemControls = SystemMediaTransportControls.GetForCurrentView();
+        LiveCaptions captions;
         
-        List<YouTubeUri> uris = new List<YouTubeUri>();
+        YoutubeClient client = new YoutubeClient();
+        IReadOnlyList<ClosedCaptionTrackInfo> ccInfo;
+        MediaStreamInfoSet streamInfo;
 
         ApplicationDataContainer settings = ApplicationData.Current.LocalSettings;
         Timer t = new Timer()
@@ -81,6 +88,8 @@ namespace FoxTube
             if (!ApplicationView.GetForCurrentView().IsViewModeSupported(ApplicationViewMode.CompactOverlay))
                 miniViewBtn.Visibility = Visibility.Collapsed;;
 
+            captions = grid.Children[1] as LiveCaptions;
+
             volume.Value = Convert.ToDouble(settings.Values["volume"]);
             videoSource.AutoPlay = (bool)settings.Values["videoAutoplay"];
 
@@ -94,121 +103,48 @@ namespace FoxTube
             avatar = channelAvatar;
             videoId = item.Id;
 
-            #region Checking qualities availability
+            #region Retrieving info for CC and Media streams
-            uris = new List<YouTubeUri>(await YouTube.GetUrisAsync(videoId));
+            //Loading streams
-
+            streamInfo = await client.GetVideoMediaStreamInfosAsync(item.Id);
-            foreach (YouTubeUri i in uris.ToList())
+            foreach(MuxedStreamInfo i in streamInfo.Muxed)
-                if (!i.HasAudio || !i.HasVideo)
-                    uris.Remove(i);
-
-            foreach (YouTubeUri u in uris)
             {
-                Debug.WriteLine("-----------------");
+                if (i.VideoQuality == VideoQuality.High2160)
-                Debug.WriteLine("URI: " + u.Uri);
-                Debug.WriteLine("Has video: " + u.HasVideo);
-                Debug.WriteLine("Has audio: " + u.HasAudio);
-                Debug.WriteLine("Type: " + u.Type);
-                Debug.WriteLine("Video quality: " + u.VideoQuality);
-                Debug.WriteLine("Audio quality: " + u.AudioQuality);
-                Debug.WriteLine("-----------------");
-            }
-            
-            foreach(YouTubeUri i in uris)
-                switch(i.VideoQuality)
-                {
-                    case YouTubeQuality.Quality2160P:
                     (quality.Items[0] as ComboBoxItem).Visibility = Visibility.Visible;
-                        break;
+                if (i.VideoQuality == VideoQuality.High1080)
-                    case YouTubeQuality.Quality1080P:
                     (quality.Items[1] as ComboBoxItem).Visibility = Visibility.Visible;
-                        break;
+                if (i.VideoQuality == VideoQuality.High720)
-                    case YouTubeQuality.Quality720P:
                     (quality.Items[2] as ComboBoxItem).Visibility = Visibility.Visible;
-                        break;
+                if (i.VideoQuality == VideoQuality.Medium480)
-                    case YouTubeQuality.Quality480P:
                     (quality.Items[3] as ComboBoxItem).Visibility = Visibility.Visible;
-                        break;
+                if (i.VideoQuality == VideoQuality.Medium360)
-                    case YouTubeQuality.Quality360P:
                     (quality.Items[4] as ComboBoxItem).Visibility = Visibility.Visible;
-                        break;
+                if (i.VideoQuality == VideoQuality.Low240)
-                    case YouTubeQuality.Quality240P:
                     (quality.Items[5] as ComboBoxItem).Visibility = Visibility.Visible;
-                        break;
+                if (i.VideoQuality == VideoQuality.Low144)
-                    case YouTubeQuality.Quality144P:
                     (quality.Items[6] as ComboBoxItem).Visibility = Visibility.Visible;
-                        break;
             }
 
             int k = (int)settings.Values["quality"];
-            switch(k)
+            if ((quality.Items[k] as ComboBoxItem).Visibility == Visibility.Visible)
+                quality.SelectedIndex = k;
+            else
+                quality.SelectedItem = quality.Items.First(x => (x as ComboBoxItem).Visibility == Visibility.Visible);
+
+            //Loading captions
+            ccInfo = await client.GetVideoClosedCaptionTrackInfosAsync(item.Id);
+            foreach (ClosedCaptionTrackInfo cc in ccInfo)
+                subsLang.Items.Add(new ComboBoxItem()
                 {
-                case 0:
+                    Content = string.Format("{1}{0}", CultureInfo.GetCultureInfo(cc.Language.Code).DisplayName, cc.IsAutoGenerated ? " (Auto-generated)" : ""),
-                    foreach(YouTubeUri i in uris)
+                    Tag = cc
-                        if(i.VideoQuality == YouTubeQuality.Quality2160P)
+                });
-                        {
+            if(ccInfo.Count > 0)
-                            quality.SelectedIndex = 0;
+                subsLang.SelectedIndex = 0;
-                            break;
+            else
-                        }
+                captionsBtn.Visibility = Visibility.Collapsed;
-                    SetFirstQuality();
-                    break;
-                case 1:
-                    foreach (YouTubeUri i in uris)
-                        if (i.VideoQuality == YouTubeQuality.Quality1080P)
-                        {
-                            quality.SelectedIndex = 1;
-                            break;
-                        }
-                    SetFirstQuality();
-                    break;
-                case 2:
-                    foreach (YouTubeUri i in uris)
-                        if (i.VideoQuality == YouTubeQuality.Quality720P)
-                        {
-                            quality.SelectedIndex = 2;
-                            break;
-                        }
-                    SetFirstQuality();
-                    break;
-                case 3:
-                    foreach (YouTubeUri i in uris)
-                        if (i.VideoQuality == YouTubeQuality.Quality480P)
-                        {
-                            quality.SelectedIndex = 3;
-                            break;
-                        }
-                    SetFirstQuality();
-                    break;
-                case 4:
-                    foreach (YouTubeUri i in uris)
-                        if (i.VideoQuality == YouTubeQuality.Quality360P)
-                        {
-                            quality.SelectedIndex = 4;
-                            break;
-                        }
-                    SetFirstQuality();
-                    break;
-                case 5:
-                    foreach (YouTubeUri i in uris)
-                        if (i.VideoQuality == YouTubeQuality.Quality240P)
-                        {
-                            quality.SelectedIndex = 5;
-                            break;
-                        }
-                    SetFirstQuality();
-                    break;
-                case 6:
-                    foreach (YouTubeUri i in uris)
-                        if (i.VideoQuality == YouTubeQuality.Quality144P)
-                        {
-                            quality.SelectedIndex = 6;
-                            break;
-                        }
-                    SetFirstQuality();
-                    break;
-            }
             #endregion
 
-            if(item.ContentDetails.ContentRating != null)
+            if (item.ContentDetails.ContentRating != null)
             {
                 if(SecretsVault.IsAuthorized && settings.Values["showMature"] != null)
                 {
@@ -261,34 +197,6 @@ namespace FoxTube
             Visibility = Visibility.Visible;
         }
 
-        void SetFirstQuality()
-        {
-            switch (uris[0].VideoQuality)
-            {
-                case YouTubeQuality.Quality2160P:
-                    quality.SelectedIndex = 0;
-                    break;
-                case YouTubeQuality.Quality1080P:
-                    quality.SelectedIndex = 1;
-                    break;
-                case YouTubeQuality.Quality720P:
-                    quality.SelectedIndex = 2;
-                    break;
-                case YouTubeQuality.Quality480P:
-                    quality.SelectedIndex = 3;
-                    break;
-                case YouTubeQuality.Quality360P:
-                    quality.SelectedIndex = 4;
-                    break;
-                case YouTubeQuality.Quality240P:
-                    quality.SelectedIndex = 5;
-                    break;
-                case YouTubeQuality.Quality144P:
-                    quality.SelectedIndex = 6;
-                    break;
-            }
-        }
-
         private async void SystemControls_Engaged(SystemMediaTransportControls sender, SystemMediaTransportControlsButtonPressedEventArgs args)
         {
             await Dispatcher.RunAsync(CoreDispatcherPriority.Normal, () =>
@@ -327,18 +235,15 @@ namespace FoxTube
         }
 
         void Elapsed()
-        {
-            if(!volumePane.IsOpen && !qualityPane.IsOpen && !subsPane.IsOpen)
         {
             controls.Visibility = Visibility.Collapsed;
-                if(!miniView)
+            if (!miniView)
                 touchCentral.Visibility = Visibility.Collapsed;
             if (pointerCaptured)
                 Window.Current.CoreWindow.PointerCursor = null;
             seekIndicator.Visibility = Visibility.Collapsed;
             t.Stop();
         }
-        }
 
         public void UpdateSize()
         {
@@ -349,11 +254,6 @@ namespace FoxTube
             }
         }
 
-        private void openVolume_Click(object sender, RoutedEventArgs e)
-        {
-            volumePane.IsOpen = true;
-        }
-
         private void volume_ValueChanged(object sender, RangeBaseValueChangedEventArgs e)
         {
             double v = volume.Value;
@@ -373,17 +273,6 @@ namespace FoxTube
             videoSource.Volume = volume.Value * 0.01;
         }
 
-        private void openSets_Click(object sender, RoutedEventArgs e)
-        {
-            qualityPane.IsOpen = true;
-        }
-
-        private void openSubs_Click(object sender, RoutedEventArgs e)
-        {
-            subsPane.IsOpen = true;
-            subsSwitch.IsOn = !subsSwitch.IsOn;
-        }
-
         private void muteBtn_Click(object sender, RoutedEventArgs e)
         {
             if(volume.Value != 0)
@@ -397,7 +286,7 @@ namespace FoxTube
 
         private void UserControl_Tapped(object sender, TappedRoutedEventArgs e)
         {
-            if (e.PointerDeviceType != Windows.Devices.Input.PointerDeviceType.Mouse)
+            if (e.PointerDeviceType == Windows.Devices.Input.PointerDeviceType.Touch)
             {
                 touchCentral.Visibility = Visibility.Visible;
                 if (t.Enabled)
@@ -405,7 +294,6 @@ namespace FoxTube
                 else
                     ShowControls();
             }
-            //else play_Click(this, null);
         }
 
         private void UserControl_PointerMoved(object sender, PointerRoutedEventArgs e)
@@ -426,91 +314,64 @@ namespace FoxTube
 
         private void quality_SelectionChanged(object sender, SelectionChangedEventArgs e)
         {
-            if(uris.Count > 0)
+            try
             {
                 videoSource.Pause();
                 timecodeBackup = videoSource.Position.TotalSeconds;
 
-                switch(quality.SelectedIndex)
+                switch((quality.SelectedItem as ComboBoxItem).Content)
                 {
-                    case 0:
+                    case "2160p":
-                        foreach (YouTubeUri i in uris)
+                        videoSource.Source = new Uri(streamInfo.Muxed.First(x => x.VideoQuality == VideoQuality.High2160).Url);
-                            if (i.VideoQuality == YouTubeQuality.Quality2160P)
-                            {
-                                videoSource.Source = i.Uri;
                         break;
-                            }
+                    case "1080p":
+                        videoSource.Source = new Uri(streamInfo.Muxed.First(x => x.VideoQuality == VideoQuality.High1080).Url);
                         break;
-                    case 1:
+                    case "720p":
-                        foreach (YouTubeUri i in uris)
+                        videoSource.Source = new Uri(streamInfo.Muxed.First(x => x.VideoQuality == VideoQuality.High720).Url);
-                            if (i.VideoQuality == YouTubeQuality.Quality1080P)
-                            {
-                                videoSource.Source = i.Uri;
                         break;
-                            }
+                    case "480p":
+                        videoSource.Source = new Uri(streamInfo.Muxed.First(x => x.VideoQuality == VideoQuality.Medium480).Url);
                         break;
-                    case 2:
+                    case "360p":
-                        foreach (YouTubeUri i in uris)
+                        videoSource.Source = new Uri(streamInfo.Muxed.First(x => x.VideoQuality == VideoQuality.Medium360).Url);
-                            if (i.VideoQuality == YouTubeQuality.Quality720P)
-                            {
-                                videoSource.Source = i.Uri;
                         break;
-                            }
+                    case "240p":
+                        videoSource.Source = new Uri(streamInfo.Muxed.First(x => x.VideoQuality == VideoQuality.Low240).Url);
                         break;
-                    case 3:
+                    case "144p":
-                        foreach (YouTubeUri i in uris)
+                        videoSource.Source = new Uri(streamInfo.Muxed.First(x => x.VideoQuality == VideoQuality.Low144).Url);
-                            if (i.VideoQuality == YouTubeQuality.Quality480P)
-                            {
-                                videoSource.Source = i.Uri;
-                                break;
-                            }
-                        break;
-                    case 4:
-                        foreach (YouTubeUri i in uris)
-                            if (i.VideoQuality == YouTubeQuality.Quality360P)
-                            {
-                                videoSource.Source = i.Uri;
-                                break;
-                            }
-                        break;
-                    case 5:
-                        foreach (YouTubeUri i in uris)
-                            if (i.VideoQuality == YouTubeQuality.Quality240P)
-                            {
-                                videoSource.Source = i.Uri;
-                                break;
-                            }
-                        break;
-                    case 6:
-                        foreach (YouTubeUri i in uris)
-                            if (i.VideoQuality == YouTubeQuality.Quality144P)
-                            {
-                                videoSource.Source = i.Uri;
-                                break;
-                            }
                         break;
                 }
 
+                needUpdateTimecode = true;
                 videoSource.Play();
-
-                Timer timer = new Timer(1000);
-                timer.Elapsed += Timer_Elapsed;
-                timer.Start();
-            }
             }
+            catch
+            {
 
-        private async void Timer_Elapsed(object sender, ElapsedEventArgs e)
+            }
-        {
-            await Dispatcher.RunAsync(CoreDispatcherPriority.Normal, () => 
-            {
-                (sender as Timer).Stop();
-                videoSource.Position = TimeSpan.FromSeconds(timecodeBackup);
-            });
         }
 
         private void subsSwitch_Toggled(object sender, RoutedEventArgs e)
         {
+            if (subsSwitch.IsOn)
+                subsLang.Visibility = Visibility.Visible;
+            else
+                subsLang.Visibility = Visibility.Collapsed;
 
+            LoadTrack();
+        }
+
+        void LoadTrack()
+        {
+            if (subsSwitch.IsOn)
+            {
+
+                captions.Initialize(ccInfo[subsLang.SelectedIndex].Url);
+            }
+            else
+                captions.Close();
         }
 
         private void fullscreen_Click(object sender, RoutedEventArgs e)
@@ -543,6 +404,12 @@ namespace FoxTube
 
         private void videoSource_CurrentStateChanged(object sender, RoutedEventArgs e)
         {
+            if(videoSource.CurrentState == MediaElementState.Playing && needUpdateTimecode)
+            {
+                videoSource.Position = TimeSpan.FromSeconds(timecodeBackup);
+                needUpdateTimecode = false;
+            }
+
             switch(videoSource.CurrentState)
             {
                 case MediaElementState.Buffering:
@@ -824,5 +691,11 @@ namespace FoxTube
                     break;
             }
         }
+
+        private void subsLang_SelectionChanged(object sender, SelectionChangedEventArgs e)
+        {
+            if (subsSwitch.IsOn)
+                captions.Initialize(ccInfo[subsLang.SelectedIndex].Url);
+        }
     }
 }

FoxTube/FoxTube.csproj

@@ -96,6 +96,7 @@
     <Compile Include="App.xaml.cs">
       <DependentUpon>App.xaml</DependentUpon>
     </Compile>
+    <Compile Include="Classes\Caption.cs" />
     <Compile Include="Classes\InboxItem.cs" />
     <Compile Include="Classes\Methods.cs" />
     <Compile Include="Classes\ObjectEventArgs.cs" />