WPF中使用LibVLCSharp.WPF 播放rtsp

格桑梅鸿

目录

• LibVLCSharp.WPF简介
  
• vlc:VideoView基本使用
  
  
  
  • 安装LibVLC
    
  • 播放rtsp
    
    
    
    • 引入命名空间
      
    • xaml 代码
      
    • cs代码
      
    
    
  • 截图
    
    
    
    • 概述
      
    • 代码示例
      
    
    
  
  
• vlc:VideoView进阶使用
  
  
  
  • 空域问题
    
  • 宽高比设置
    
    
    
    • 全屏问题
      
    • 拉伸问题
      
    
    
  • 响应鼠标点击事件
    
  • 播放其他类型
    
  • 多视频重叠
    
  • 画中画
    
  
  
• 引用
  

LibVLCSharp.WPF简介

从vlc说起

• vlc是一个开源的跨平台视频播放库，使用C/C++编写，vlc底层基于ffmpeg。地址：https://github.com/videolan/vlc
  
• LibVLC是对vlc的封装，提供了开发的灵活性、便捷性，统一和更加高级的api。C/C++编写。地址：https://code.videolan.org/videolan/libvlc-nuget
  

LibVLC支持的平台：
平台LibVLC包Nuget地址最低操作系统版本WindowsVideoLAN.LibVLC.Windowshttps://www.nuget.org/packages/VideoLAN.LibVLC.Windows/Windows XPUWPVideoLAN.LibVLC.UWPhttps://www.nuget.org/packages/VideoLAN.LibVLC.UWP/Windows 10MacVideoLAN.LibVLC.Machttps://www.nuget.org/packages/VideoLAN.LibVLC.Mac/macOS 10.7AndroidVideoLAN.LibVLC.Androidhttps://www.nuget.org/packages/VideoLAN.LibVLC.Android/Android 2.3iOSVideoLAN.LibVLC.iOShttps://www.nuget.org/packages/VideoLAN.LibVLC.iOS/iOS 8.4tvOSVideoLAN.LibVLC.tvOShttps://www.nuget.org/packages/VideoLAN.LibVLC.tvOS/tvOS 10.2LinuxLinuxGuide：https://code.videolan.org/videolan/LibVLCSharp/-/blob/3.x/docs/linux-setup.md

• LibVLCSharp是对LibVLC的封装，相当于一个包装器，提供给C#开发人员使用LibVLC的功能。地址：https://code.videolan.org/videolan/LibVLCSharp
  
• LibVLCSharp.WPF是LibVLCSharp的WPF实现，封装了vlc:VideoView 这个UI控件，用来播放视频。 LibVLCSharp.WPF可以在.NETCoreApp 3.1 ;.NETFramework 4.6.1+; net6.0+运行时中使用。
  

虽然  LibVLCSharp 提供跨平台的解决方案，但是本文主要基于 Windows 平台来讨论。
vlc:VideoView基本使用

安装LibVLC

在使用LIibVLCSharp.WPF前必须先安装 LibVLC，否则会报如下错误：

1. //报错位置：实例化 LibVLC
2.  LibVLC    _libvlc=new LibVLC();
4. //Message：
5. Failed to load required native libraries.
6. Have you installed the latest LibVLC package from nuget for your target platform?
7. Search paths include E:\code\WPF\APngApp\bin\Debug\net7.0-windows\libvlc\win-x64\libvlc.dll,E:\code\WPF\APngApp\bin\Debug\net7.0-windows\libvlc\win-x64\libvlccore.dll; E:\code\WPF\APngApp\bin\Debug\net7.0-windows\libvlc\win-x64\libvlc.dll,E:\code\WPF\APngApp\bin\Debug\net7.0-windows\libvlc\win-x64\libvlccore.dll; E:\code\WPF\APngApp\bin\Debug\net7.0-windows\libvlc.dll,

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LibVLC安装方式：

• 集成安装：LibVLC 已经打包成了一个package，放在了nuget上面，只需要在项目中安装此VideoLAN.LibVLC.Windows依赖就可以。nuget安装命令：NuGet\Install-Package VideoLAN.LibVLC.Windows
  

播放rtsp

新建 wpf 应用程序

引入命名空间

1. xmlns:vlc="clr-namespace:LibVLCSharp.WPF;assembly=LibVLCSharp.WPF"

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xaml 代码

1. <vlc:VideoView  x:Name="video_main" >
2. ......
3. </vlc:VideoView>

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cs代码

1. private void MainWindow_Loaded(object sender, RoutedEventArgs e)
2. {
3. <Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
4. <Label.Background>
5.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
6. </Label.Background>
7. </Label>LibVLC _libvlc = new LibVLC();
8. <Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
9. <Label.Background>
10.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
11. </Label.Background>
12. </Label>LibVLCSharp.Shared.MediaPlayer player = new LibVLCSharp.Shared.MediaPlayer(_libvlc);
13. <Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
14. <Label.Background>
15.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
16. </Label.Background>
17. </Label>video_main.Width = this.Width;
18. <Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
19. <Label.Background>
20.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
21. </Label.Background>
22. </Label>video_main.Height = this.Height;
23. <Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
24. <Label.Background>
25.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
26. </Label.Background>
27. </Label>video_main.MediaPlayer = player;
28. <Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
29. <Label.Background>
30.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
31. </Label.Background>
32. </Label>//通过设置宽高比为窗体宽高可达到视频铺满全屏的效果
33. <Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
34. <Label.Background>
35.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
36. </Label.Background>
37. </Label>player.AspectRatio = this.Width + ":" + this.Height;
38. <Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
39. <Label.Background>
40.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
41. </Label.Background>
42. </Label>string url = "rtsp://user:password@192.168.1.120:554/ch1/main/av_stream";
43. <Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
44. <Label.Background>
45.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
46. </Label.Background>
47. </Label>using (LibVLCSharp.Shared.Media media = new Media(_libvlc, new Uri(url)))
48. <Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
49. <Label.Background>
50.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
51. </Label.Background>
52. </Label>{
53. <Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
54. <Label.Background>
55.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
56. </Label.Background>
57. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
58. <Label.Background>
59.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
60. </Label.Background>
61. </Label>video_main.MediaPlayer.Play(media);
62. <Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
63. <Label.Background>
64.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
65. </Label.Background>
66. </Label>}
67. }

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截图

概述

LibVLCSharp是对 vlc 的封装，而vlc本身就支持截图的功能，相应的LibVLCSharp也提供了一个 MediaPlayer.TakeSnapshot 的方法用来截图
调用该方法需要传递的参数：

• num：视频输出数量（通常第一个/仅一个为0）【直译过来的，这个参数具体什么意思尚不太清楚，当前是直接传0】
  
• filePath：图片文件存放路径，需要确保文件夹存在并有访问权限，如：D:\A\2.png
  
• width：图片的宽度
  
• height：图片的高度
  
• 若宽高都为0，则生成的图片为视频原始大小；若宽为0或者高为0，则生成的图片为视频原始的纵横比
  

代码示例

在页面添加一个按钮，在按钮点击事件中处理截图。
xaml：

1. <Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
2. <Label.Background>
3.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
4. </Label.Background>
5. </Label>

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cs：

1. private void snapshot_MouseLeftButtonDown(object sender, MouseButtonEventArgs e){<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
2. <Label.Background>
3.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
4. </Label.Background>
5. </Label>string dirPath = AppDomain.CurrentDomain.BaseDirectory+ "\\snapshot\";<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
6. <Label.Background>
7.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
8. </Label.Background>
9. </Label>//string dirPath = "D:\\A\";<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
10. <Label.Background>
11.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
12. </Label.Background>
13. </Label>string imgName = DateTime.Now.Ticks+ ".png";<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
14. <Label.Background>
15.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
16. </Label.Background>
17. </Label>string filePath = dirPath + imgName;<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
18. <Label.Background>
19.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
20. </Label.Background>
21. </Label>bool r = this.video_main.MediaPlayer.TakeSnapshot(0, filePath, (uint)this.video_main.Width, (uint)this.video_main.Height);}

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• video_main 就是 VideoView 控件的name
  

vlc:VideoView进阶使用

空域问题

由于VideoView控件的实现原理是在window上面绑定一个前台窗体（ForegroudWindow），然后在ForegroudWindow中播放视频，所以当需要在window中添加其他控件（如：label，button<vlc:VideoView  x:Name="video_main" >
......
</vlc:VideoView>）的时候不可以使用WPF原始的“并列”写法，而需要使用“层级”写法，即将需要展示的控件写在VideoView控件的"里面"，他们形成父子级关系。
上述文字可能比较难以理解， 用代码来分析。首先通过编写如下代码，让视频播放起来：
xaml：

1. <Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
2. <Label.Background>
3.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
4. </Label.Background>
5. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
6. <Label.Background>
7.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
8. </Label.Background>
9. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
10. <Label.Background>
11.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
12. </Label.Background>
13. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
14. <Label.Background>
15.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
16. </Label.Background>
17. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
18. <Label.Background>
19.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
20. </Label.Background>
21. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
22. <Label.Background>
23.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
24. </Label.Background>
25. </Label>                                            <Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
26. <Label.Background>
27.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
28. </Label.Background>
29. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
30. <Label.Background>
31.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
32. </Label.Background>
33. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
34. <Label.Background>
35.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
36. </Label.Background>
37. </Label>

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cs：

1. using LibVLCSharp.Shared;using System;using System.Collections.Generic;using System.Linq;using System.Security.Policy;using System.Text;using System.Threading.Tasks;using System.Windows;using System.Windows.Controls;using System.Windows.Data;using System.Windows.Documents;using System.Windows.Input;using System.Windows.Media;using System.Windows.Media.Imaging;using System.Windows.Navigation;using System.Windows.Shapes;namespace APngApp{<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
2. <Label.Background>
3.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
4. </Label.Background>
5. </Label>/// <Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
6. <Label.Background>
7.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
8. </Label.Background>
9. </Label>/// Interaction logic for MainWindow.xaml<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
10. <Label.Background>
11.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
12. </Label.Background>
13. </Label>/// <Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
14. <Label.Background>
15.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
16. </Label.Background>
17. </Label>public partial class MainWindow : Window<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
18. <Label.Background>
19.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
20. </Label.Background>
21. </Label>{<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
22. <Label.Background>
23.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
24. </Label.Background>
25. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
26. <Label.Background>
27.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
28. </Label.Background>
29. </Label>private LibVLC _libvlc;<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
30. <Label.Background>
31.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
32. </Label.Background>
33. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
34. <Label.Background>
35.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
36. </Label.Background>
37. </Label>public MainWindow()<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
38. <Label.Background>
39.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
40. </Label.Background>
41. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
42. <Label.Background>
43.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
44. </Label.Background>
45. </Label>{<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
46. <Label.Background>
47.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
48. </Label.Background>
49. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
50. <Label.Background>
51.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
52. </Label.Background>
53. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
54. <Label.Background>
55.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
56. </Label.Background>
57. </Label>InitializeComponent();<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
58. <Label.Background>
59.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
60. </Label.Background>
61. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
62. <Label.Background>
63.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
64. </Label.Background>
65. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
66. <Label.Background>
67.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
68. </Label.Background>
69. </Label>_libvlc=new LibVLC();<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
70. <Label.Background>
71.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
72. </Label.Background>
73. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
74. <Label.Background>
75.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
76. </Label.Background>
77. </Label>}<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
78. <Label.Background>
79.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
80. </Label.Background>
81. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
82. <Label.Background>
83.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
84. </Label.Background>
85. </Label>private void Window_Loaded(object sender, RoutedEventArgs e)<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
86. <Label.Background>
87.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
88. </Label.Background>
89. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
90. <Label.Background>
91.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
92. </Label.Background>
93. </Label>{<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
94. <Label.Background>
95.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
96. </Label.Background>
97. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
98. <Label.Background>
99.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
100. </Label.Background>
101. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
102. <Label.Background>
103.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
104. </Label.Background>
105. </Label>LibVLCSharp.Shared.MediaPlayer player = new LibVLCSharp.Shared.MediaPlayer(_libvlc);<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
106. <Label.Background>
107.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
108. </Label.Background>
109. </Label> <Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
110. <Label.Background>
111.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
112. </Label.Background>
113. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
114. <Label.Background>
115.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
116. </Label.Background>
117. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
118. <Label.Background>
119.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
120. </Label.Background>
121. </Label>videoView.MediaPlayer = player;   <Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
122. <Label.Background>
123.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
124. </Label.Background>
125. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
126. <Label.Background>
127.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
128. </Label.Background>
129. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
130. <Label.Background>
131.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
132. </Label.Background>
133. </Label>using (LibVLCSharp.Shared.Media media = new Media(_libvlc, new Uri("rtsp://xxx:xxx@192.168.1.120:554/ch1/main/av_stream")))<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
134. <Label.Background>
135.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
136. </Label.Background>
137. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
138. <Label.Background>
139.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
140. </Label.Background>
141. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
142. <Label.Background>
143.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
144. </Label.Background>
145. </Label>{<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
146. <Label.Background>
147.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
148. </Label.Background>
149. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
150. <Label.Background>
151.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
152. </Label.Background>
153. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
154. <Label.Background>
155.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
156. </Label.Background>
157. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
158. <Label.Background>
159.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
160. </Label.Background>
161. </Label>videoView.MediaPlayer.Play(media);<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
162. <Label.Background>
163.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
164. </Label.Background>
165. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
166. <Label.Background>
167.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
168. </Label.Background>
169. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
170. <Label.Background>
171.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
172. </Label.Background>
173. </Label>}<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
174. <Label.Background>
175.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
176. </Label.Background>
177. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
178. <Label.Background>
179.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
180. </Label.Background>
181. </Label>}<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
182. <Label.Background>
183.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
184. </Label.Background>
185. </Label>}}

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如果一切正常，将看到如下的画面，并且在VS实时可视化树中将看到  ForegroudWindow 和 MainWindow。

• 可以看到虽然我们仅仅创建了一个MainWindow，但是确实有两个窗体存在，VideoView控件为程序生成了一个ForegroudWindow。
  
• 当我们在VideoView内部编写一个button控件的时候，控件正确的显示出来了，如果我们将这个button移动到和vlc:VideoView并列的位置，按钮将不会显示出来，因为它被ForegroudWindow遮住了，这很诡异，也很有趣，这里就不列举并列写法的代码了。
  
• 官方（videolan）把这种情况总结为空域问题，即 Airspace。
  
• 不难看出来VideoView控件的这种设计有悖常理，但是据说这是由于LibVLC和vlc的局限性导致的，属于妥协式设计。但是大可放心使用，LibVLCSharp这套解决方案使用非常的广泛，而且截至目前（2023）官方issues仍非常活跃，并且版本也在不断更新中。官方也提供商业版本和付费的技术支持。
  

宽高比设置

宽高比设置是一个非常神奇的功能，它可以解决：

• 想让画面全屏显示却出现了间隙，这里的间隙是指画面没有完全覆盖窗体。
  
• 想要挤压或者拉伸画面却不知道如何实现。
  
• 在异形屏幕上面全屏显示画面，如：画面比例是16：9，想要在分辨率为5：5的屏幕上面全屏显示画面
  
• 其他宽高比问题，实际生产中，画面宽高比和屏幕宽高比都是不固定的，甚至可以说很随意，比如海康全景相机，其输出的画面本身就是宽度远高于高度，再比如同一个WPF程序需要在分辨率为1366768和25601440的屏幕分辨率下面全屏显示
  
• 这里提到的画面是指rtsp源本身的画面大小
  

通过如下代码和现象可以很直观的观察到宽高比的神奇之处。
全屏问题

环境：Windows11，屏幕分辨率为2560*1440，未设置缩放

• 新建一个WPF的窗体，引入VideoView控件，并在Window_ContentRendered 事件中初始化 MediaPlayer 以播放rtsp流。
  
• 为尽可能排除其他因素对本问题的影响，将对窗体和VideoView控件做如下初始化设置：
  
  
  
  • 窗体的WindowStyle=None
    
  • 窗体的ResizeMode=NoResize
    
  • 窗体的AllowTransparency=true
    
  • 设置窗体初始宽高为屏幕工作区域，即不包括任务栏部分，此时实际高度小于1440
    
  • 设置video控件的 宽高为窗体的宽高
    
  
  

xaml代码：

1. <Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
2. <Label.Background>
3.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
4. </Label.Background>
5. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
6. <Label.Background>
7.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
8. </Label.Background>
9. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
10. <Label.Background>
11.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
12. </Label.Background>
13. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
14. <Label.Background>
15.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
16. </Label.Background>
17. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
18. <Label.Background>
19.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
20. </Label.Background>
21. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
22. <Label.Background>
23.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
24. </Label.Background>
25. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
26. <Label.Background>
27.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
28. </Label.Background>
29. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
30. <Label.Background>
31.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
32. </Label.Background>
33. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
34. <Label.Background>
35.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
36. </Label.Background>
37. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
38. <Label.Background>
39.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
40. </Label.Background>
41. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
42. <Label.Background>
43.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
44. </Label.Background>
45. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
46. <Label.Background>
47.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
48. </Label.Background>
49. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
50. <Label.Background>
51.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
52. </Label.Background>
53. </Label>

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cs：

1. using LibVLCSharp.Shared;using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Threading.Tasks;using System.Windows;using System.Windows.Controls;using System.Windows.Data;using System.Windows.Documents;using System.Windows.Input;using System.Windows.Media;using System.Windows.Media.Imaging;using System.Windows.Shapes;namespace RambleWPF{<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
2. <Label.Background>
3.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
4. </Label.Background>
5. </Label>/// <Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
6. <Label.Background>
7.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
8. </Label.Background>
9. </Label>/// 视频控件3.xaml 的交互逻辑<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
10. <Label.Background>
11.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
12. </Label.Background>
13. </Label>/// <Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
14. <Label.Background>
15.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
16. </Label.Background>
17. </Label>public partial class 视频控件3 : Window<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
18. <Label.Background>
19.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
20. </Label.Background>
21. </Label>{<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
22. <Label.Background>
23.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
24. </Label.Background>
25. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
26. <Label.Background>
27.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
28. </Label.Background>
29. </Label>readonly LibVLC _libvlc;<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
30. <Label.Background>
31.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
32. </Label.Background>
33. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
34. <Label.Background>
35.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
36. </Label.Background>
37. </Label>public 视频控件3()<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
38. <Label.Background>
39.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
40. </Label.Background>
41. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
42. <Label.Background>
43.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
44. </Label.Background>
45. </Label>{<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
46. <Label.Background>
47.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
48. </Label.Background>
49. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
50. <Label.Background>
51.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
52. </Label.Background>
53. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
54. <Label.Background>
55.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
56. </Label.Background>
57. </Label>InitializeComponent();<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
58. <Label.Background>
59.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
60. </Label.Background>
61. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
62. <Label.Background>
63.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
64. </Label.Background>
65. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
66. <Label.Background>
67.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
68. </Label.Background>
69. </Label>_libvlc = new LibVLC();<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
70. <Label.Background>
71.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
72. </Label.Background>
73. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
74. <Label.Background>
75.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
76. </Label.Background>
77. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
78. <Label.Background>
79.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
80. </Label.Background>
81. </Label>this.WindowStyle = WindowStyle.None;<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
82. <Label.Background>
83.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
84. </Label.Background>
85. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
86. <Label.Background>
87.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
88. </Label.Background>
89. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
90. <Label.Background>
91.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
92. </Label.Background>
93. </Label>ResizeMode = ResizeMode.NoResize;<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
94. <Label.Background>
95.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
96. </Label.Background>
97. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
98. <Label.Background>
99.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
100. </Label.Background>
101. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
102. <Label.Background>
103.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
104. </Label.Background>
105. </Label>AllowsTransparency = true;<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
106. <Label.Background>
107.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
108. </Label.Background>
109. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
110. <Label.Background>
111.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
112. </Label.Background>
113. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
114. <Label.Background>
115.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
116. </Label.Background>
117. </Label>//工作区域就是不包括任务栏的其他区域<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
118. <Label.Background>
119.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
120. </Label.Background>
121. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
122. <Label.Background>
123.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
124. </Label.Background>
125. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
126. <Label.Background>
127.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
128. </Label.Background>
129. </Label>double x = SystemParameters.WorkArea.Width;<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
130. <Label.Background>
131.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
132. </Label.Background>
133. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
134. <Label.Background>
135.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
136. </Label.Background>
137. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
138. <Label.Background>
139.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
140. </Label.Background>
141. </Label>//得到屏幕工作区域宽度<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
142. <Label.Background>
143.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
144. </Label.Background>
145. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
146. <Label.Background>
147.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
148. </Label.Background>
149. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
150. <Label.Background>
151.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
152. </Label.Background>
153. </Label>double y = SystemParameters.WorkArea.Height;<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
154. <Label.Background>
155.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
156. </Label.Background>
157. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
158. <Label.Background>
159.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
160. </Label.Background>
161. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
162. <Label.Background>
163.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
164. </Label.Background>
165. </Label>win.Width = x;<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
166. <Label.Background>
167.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
168. </Label.Background>
169. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
170. <Label.Background>
171.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
172. </Label.Background>
173. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
174. <Label.Background>
175.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
176. </Label.Background>
177. </Label>win.Height = y;<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
178. <Label.Background>
179.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
180. </Label.Background>
181. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
182. <Label.Background>
183.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
184. </Label.Background>
185. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
186. <Label.Background>
187.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
188. </Label.Background>
189. </Label>win.Top = 0;<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
190. <Label.Background>
191.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
192. </Label.Background>
193. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
194. <Label.Background>
195.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
196. </Label.Background>
197. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
198. <Label.Background>
199.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
200. </Label.Background>
201. </Label>win.Left = 0;<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
202. <Label.Background>
203.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
204. </Label.Background>
205. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
206. <Label.Background>
207.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
208. </Label.Background>
209. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
210. <Label.Background>
211.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
212. </Label.Background>
213. </Label>video.Width = x;<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
214. <Label.Background>
215.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
216. </Label.Background>
217. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
218. <Label.Background>
219.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
220. </Label.Background>
221. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
222. <Label.Background>
223.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
224. </Label.Background>
225. </Label>video.Height = y;<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
226. <Label.Background>
227.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
228. </Label.Background>
229. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
230. <Label.Background>
231.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
232. </Label.Background>
233. </Label>}<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
234. <Label.Background>
235.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
236. </Label.Background>
237. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
238. <Label.Background>
239.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
240. </Label.Background>
241. </Label>private void Window_ContentRendered(object sender, EventArgs e)<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
242. <Label.Background>
243.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
244. </Label.Background>
245. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
246. <Label.Background>
247.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
248. </Label.Background>
249. </Label>{<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
250. <Label.Background>
251.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
252. </Label.Background>
253. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
254. <Label.Background>
255.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
256. </Label.Background>
257. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
258. <Label.Background>
259.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
260. </Label.Background>
261. </Label>string url = "rtsp://xxx:xxx@192.168.1.120:554/ch1/main/av_stream";<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
262. <Label.Background>
263.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
264. </Label.Background>
265. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
266. <Label.Background>
267.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
268. </Label.Background>
269. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
270. <Label.Background>
271.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
272. </Label.Background>
273. </Label>LibVLCSharp.Shared.MediaPlayer player = new LibVLCSharp.Shared.MediaPlayer(_libvlc);<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
274. <Label.Background>
275.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
276. </Label.Background>
277. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
278. <Label.Background>
279.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
280. </Label.Background>
281. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
282. <Label.Background>
283.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
284. </Label.Background>
285. </Label>video.MediaPlayer = player;<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
286. <Label.Background>
287.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
288. </Label.Background>
289. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
290. <Label.Background>
291.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
292. </Label.Background>
293. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
294. <Label.Background>
295.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
296. </Label.Background>
297. </Label>using (LibVLCSharp.Shared.Media media = new Media(_libvlc, new Uri(url)))<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
298. <Label.Background>
299.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
300. </Label.Background>
301. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
302. <Label.Background>
303.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
304. </Label.Background>
305. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
306. <Label.Background>
307.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
308. </Label.Background>
309. </Label>{<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
310. <Label.Background>
311.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
312. </Label.Background>
313. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
314. <Label.Background>
315.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
316. </Label.Background>
317. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
318. <Label.Background>
319.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
320. </Label.Background>
321. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
322. <Label.Background>
323.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
324. </Label.Background>
325. </Label>video.MediaPlayer.Play(media);<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
326. <Label.Background>
327.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
328. </Label.Background>
329. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
330. <Label.Background>
331.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
332. </Label.Background>
333. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
334. <Label.Background>
335.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
336. </Label.Background>
337. </Label>}<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
338. <Label.Background>
339.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
340. </Label.Background>
341. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
342. <Label.Background>
343.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
344. </Label.Background>
345. </Label>}<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
346. <Label.Background>
347.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
348. </Label.Background>
349. </Label>}}

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此时启动程序，如果不出意外，将看到如下的存在“间隙”的画面：

可以看到虽然在初始化的时候我们显示指定了video控件的宽高等于窗体的宽高，但是由于rtsp视频源的画面宽高比和窗体的宽高比不一致，所以出现了“间隙”。要如何解决此问题呢？只需要在Window_ContentRendered中主动设置video.MediaPlayer的宽高比为video控件的宽高即可。
修改后的 Window_ContentRendered 是这样的：

1. private void Window_ContentRendered(object sender, EventArgs e){<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
2. <Label.Background>
3.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
4. </Label.Background>
5. </Label>string url = "rtsp://xxx:xxx@192.168.1.120:554/ch1/main/av_stream";<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
6. <Label.Background>
7.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
8. </Label.Background>
9. </Label>LibVLCSharp.Shared.MediaPlayer player = new LibVLCSharp.Shared.MediaPlayer(_libvlc);<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
10. <Label.Background>
11.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
12. </Label.Background>
13. </Label>video.MediaPlayer = player;<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
14. <Label.Background>
15.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
16. </Label.Background>
17. </Label>using (LibVLCSharp.Shared.Media media = new Media(_libvlc, new Uri(url)))<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
18. <Label.Background>
19.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
20. </Label.Background>
21. </Label>{<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
22. <Label.Background>
23.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
24. </Label.Background>
25. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
26. <Label.Background>
27.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
28. </Label.Background>
29. </Label>video.MediaPlayer.Play(media);<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
30. <Label.Background>
31.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
32. </Label.Background>
33. </Label>}<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
34. <Label.Background>
35.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
36. </Label.Background>
37. </Label>player.AspectRatio = video.Width + ":" + video.Height;}

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修改后的画面是这样的：

• 可以看到间隙已经没有了，画面按照预期的方式显示了。
  

拉伸问题

环境：Windows11，屏幕分辨率为2560*1440，未设置缩放

通过对全屏问题的分析，拉伸问题其实就很好理解了，只需要设置特定的宽高比即可实现，如下代码将对画面纵向和横向进行拉伸

1. /// /// 挤压和拉伸/// /// /// private void extrusion_Click(object sender, RoutedEventArgs e){<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
2. <Label.Background>
3.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
4. </Label.Background>
5. </Label>video.MediaPlayer.AspectRatio = this.Width + ":" + 100;<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
6. <Label.Background>
7.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
8. </Label.Background>
9. </Label>//video.MediaPlayer.AspectRatio = 100 + ":" + video.Height;}

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响应鼠标点击事件

由于空域问题的存在，视频画面是无法响应鼠标点击事件的，不过有一个曲线救国的办法：

• 首先设置videoView控件的 isEnable 属性为false
  
• 然后在视频画面上面放一个遮罩层，遮罩层背景需要设置为透明，此时点击画面将可以获取到响应的事件
  

核心代码如下：
初始化VideoView：

1. private void Window_ContentRendered(object sender, EventArgs e){<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
2. <Label.Background>
3.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
4. </Label.Background>
5. </Label>video.IsEnabled = false;<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
6. <Label.Background>
7.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
8. </Label.Background>
9. </Label>string url = "rtsp://xxx:xxx@192.168.1.120:554/ch1/main/av_stream";<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
10. <Label.Background>
11.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
12. </Label.Background>
13. </Label>LibVLCSharp.Shared.MediaPlayer player = new LibVLCSharp.Shared.MediaPlayer(_libvlc);<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
14. <Label.Background>
15.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
16. </Label.Background>
17. </Label>video.MediaPlayer = player;<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
18. <Label.Background>
19.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
20. </Label.Background>
21. </Label>using (LibVLCSharp.Shared.Media media = new Media(_libvlc, new Uri(url)))<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
22. <Label.Background>
23.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
24. </Label.Background>
25. </Label>{<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
26. <Label.Background>
27.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
28. </Label.Background>
29. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
30. <Label.Background>
31.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
32. </Label.Background>
33. </Label>video.MediaPlayer.Play(media);<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
34. <Label.Background>
35.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
36. </Label.Background>
37. </Label>}<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
38. <Label.Background>
39.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
40. </Label.Background>
41. </Label>player.AspectRatio = video.Width + ":" + video.Height;   }

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遮罩层xaml：

1. <Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
2. <Label.Background>
3.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
4. </Label.Background>
5. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
6. <Label.Background>
7.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
8. </Label.Background>
9. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
10. <Label.Background>
11.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
12. </Label.Background>
13. </Label> <Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
14. <Label.Background>
15.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
16. </Label.Background>
17. </Label> <Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
18. <Label.Background>
19.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
20. </Label.Background>
21. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
22. <Label.Background>
23.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
24. </Label.Background>
25. </Label>  

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其中，mask_MouseLeftButtonDown 和root_grid_MouseLeftButtonDown 事件可以正常响应。
而video_MouseLeftButtonDown 事件无法响应，因为空域的存在，此事件要么绑定在ForegroudWindow上面，要么可能就没有成功被委托。
播放其他类型

如下代码演示了播放M3U8和本地文件：

1. private void Window_ContentRendered(object sender, EventArgs e){<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
2. <Label.Background>
3.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
4. </Label.Background>
5. </Label>video.IsEnabled = false;<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
6. <Label.Background>
7.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
8. </Label.Background>
9. </Label>//rtsp 播放串<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
10. <Label.Background>
11.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
12. </Label.Background>
13. </Label>//string url = "rtsp://xxx:xxx@192.168.1.120:554/ch1/main/av_stream";<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
14. <Label.Background>
15.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
16. </Label.Background>
17. </Label>//m3u8播放串<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
18. <Label.Background>
19.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
20. </Label.Background>
21. </Label>//string url = "http://1257120875.vod2.myqcloud.com/0ef121cdvodtransgzp1257120875/3055695e5285890780828799271/v.f230.m3u8";<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
22. <Label.Background>
23.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
24. </Label.Background>
25. </Label>//播放文件<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
26. <Label.Background>
27.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
28. </Label.Background>
29. </Label>string url = "C:\\Users\\cml\\Desktop\\temp\\流浪地球2.mp4";<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
30. <Label.Background>
31.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
32. </Label.Background>
33. </Label>LibVLCSharp.Shared.MediaPlayer player = new LibVLCSharp.Shared.MediaPlayer(_libvlc);<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
34. <Label.Background>
35.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
36. </Label.Background>
37. </Label>video.MediaPlayer = player;<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
38. <Label.Background>
39.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
40. </Label.Background>
41. </Label>using (LibVLCSharp.Shared.Media media = new Media(_libvlc, new Uri(url)))<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
42. <Label.Background>
43.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
44. </Label.Background>
45. </Label>{<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
46. <Label.Background>
47.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
48. </Label.Background>
49. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
50. <Label.Background>
51.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
52. </Label.Background>
53. </Label>video.MediaPlayer.Play(media);<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
54. <Label.Background>
55.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
56. </Label.Background>
57. </Label>}<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
58. <Label.Background>
59.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
60. </Label.Background>
61. </Label>player.AspectRatio = video.Width + ":" + video.Height;}

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多视频重叠

在一个窗体中播放两个视频，一个在后，全屏显示，一个在前，小窗播放。并且点击按钮可以切换画面位置。效果如下：

实现思路：

• 首先，其实只要在xaml中编排好VideoView控件的上下位置就可以实现重叠了 ，越靠上的控件会覆盖在靠下的控件上方。
  
• 切换功能的实现需要分别销毁前后两个VideoView的MediaPlayer.Media对象，并重新创建。
  

代码如下：
xaml：

1. <Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
2. <Label.Background>
3.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
4. </Label.Background>
5. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
6. <Label.Background>
7.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
8. </Label.Background>
9. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
10. <Label.Background>
11.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
12. </Label.Background>
13. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
14. <Label.Background>
15.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
16. </Label.Background>
17. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
18. <Label.Background>
19.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
20. </Label.Background>
21. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
22. <Label.Background>
23.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
24. </Label.Background>
25. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
26. <Label.Background>
27.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
28. </Label.Background>
29. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
30. <Label.Background>
31.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
32. </Label.Background>
33. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
34. <Label.Background>
35.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
36. </Label.Background>
37. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
38. <Label.Background>
39.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
40. </Label.Background>
41. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
42. <Label.Background>
43.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
44. </Label.Background>
45. </Label>

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cs:

1. using LibVLCSharp.Shared;using System;using System.Collections.Generic;using System.Linq;using System.Security.Policy;using System.Text;using System.Threading.Tasks;using System.Windows;using System.Windows.Controls;using System.Windows.Data;using System.Windows.Documents;using System.Windows.Input;using System.Windows.Media;using System.Windows.Media.Imaging;using System.Windows.Shapes;namespace RambleWPF{<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
2. <Label.Background>
3.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
4. </Label.Background>
5. </Label>/// <Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
6. <Label.Background>
7.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
8. </Label.Background>
9. </Label>/// 视频控件2.xaml 的交互逻辑<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
10. <Label.Background>
11.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
12. </Label.Background>
13. </Label>/// <Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
14. <Label.Background>
15.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
16. </Label.Background>
17. </Label>public partial class 视频控件2 : Window<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
18. <Label.Background>
19.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
20. </Label.Background>
21. </Label>{<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
22. <Label.Background>
23.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
24. </Label.Background>
25. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
26. <Label.Background>
27.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
28. </Label.Background>
29. </Label>readonly LibVLC _libvlc;<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
30. <Label.Background>
31.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
32. </Label.Background>
33. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
34. <Label.Background>
35.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
36. </Label.Background>
37. </Label>public 视频控件2()<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
38. <Label.Background>
39.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
40. </Label.Background>
41. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
42. <Label.Background>
43.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
44. </Label.Background>
45. </Label>{<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
46. <Label.Background>
47.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
48. </Label.Background>
49. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
50. <Label.Background>
51.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
52. </Label.Background>
53. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
54. <Label.Background>
55.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
56. </Label.Background>
57. </Label>InitializeComponent();<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
58. <Label.Background>
59.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
60. </Label.Background>
61. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
62. <Label.Background>
63.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
64. </Label.Background>
65. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
66. <Label.Background>
67.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
68. </Label.Background>
69. </Label>_libvlc = new LibVLC();<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
70. <Label.Background>
71.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
72. </Label.Background>
73. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
74. <Label.Background>
75.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
76. </Label.Background>
77. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
78. <Label.Background>
79.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
80. </Label.Background>
81. </Label>WindowStyle = WindowStyle.None;<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
82. <Label.Background>
83.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
84. </Label.Background>
85. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
86. <Label.Background>
87.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
88. </Label.Background>
89. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
90. <Label.Background>
91.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
92. </Label.Background>
93. </Label>ResizeMode = ResizeMode.NoResize;<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
94. <Label.Background>
95.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
96. </Label.Background>
97. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
98. <Label.Background>
99.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
100. </Label.Background>
101. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
102. <Label.Background>
103.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
104. </Label.Background>
105. </Label>AllowsTransparency = true;<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
106. <Label.Background>
107.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
108. </Label.Background>
109. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
110. <Label.Background>
111.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
112. </Label.Background>
113. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
114. <Label.Background>
115.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
116. </Label.Background>
117. </Label>//工作区域就是不包括任务栏的其他区域<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
118. <Label.Background>
119.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
120. </Label.Background>
121. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
122. <Label.Background>
123.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
124. </Label.Background>
125. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
126. <Label.Background>
127.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
128. </Label.Background>
129. </Label>double x = SystemParameters.WorkArea.Width;<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
130. <Label.Background>
131.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
132. </Label.Background>
133. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
134. <Label.Background>
135.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
136. </Label.Background>
137. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
138. <Label.Background>
139.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
140. </Label.Background>
141. </Label>//得到屏幕工作区域宽度<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
142. <Label.Background>
143.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
144. </Label.Background>
145. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
146. <Label.Background>
147.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
148. </Label.Background>
149. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
150. <Label.Background>
151.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
152. </Label.Background>
153. </Label>double y = SystemParameters.WorkArea.Height;<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
154. <Label.Background>
155.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
156. </Label.Background>
157. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
158. <Label.Background>
159.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
160. </Label.Background>
161. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
162. <Label.Background>
163.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
164. </Label.Background>
165. </Label>win.Width = x;<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
166. <Label.Background>
167.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
168. </Label.Background>
169. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
170. <Label.Background>
171.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
172. </Label.Background>
173. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
174. <Label.Background>
175.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
176. </Label.Background>
177. </Label>win.Height = y;<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
178. <Label.Background>
179.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
180. </Label.Background>
181. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
182. <Label.Background>
183.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
184. </Label.Background>
185. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
186. <Label.Background>
187.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
188. </Label.Background>
189. </Label>win.Top = 0;<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
190. <Label.Background>
191.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
192. </Label.Background>
193. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
194. <Label.Background>
195.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
196. </Label.Background>
197. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
198. <Label.Background>
199.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
200. </Label.Background>
201. </Label>win.Left = 0;<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
202. <Label.Background>
203.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
204. </Label.Background>
205. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
206. <Label.Background>
207.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
208. </Label.Background>
209. </Label>}<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
210. <Label.Background>
211.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
212. </Label.Background>
213. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
214. <Label.Background>
215.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
216. </Label.Background>
217. </Label>private void Window_Loaded(object sender, RoutedEventArgs e)<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
218. <Label.Background>
219.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
220. </Label.Background>
221. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
222. <Label.Background>
223.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
224. </Label.Background>
225. </Label>{<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
226. <Label.Background>
227.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
228. </Label.Background>
229. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
230. <Label.Background>
231.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
232. </Label.Background>
233. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
234. <Label.Background>
235.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
236. </Label.Background>
237. </Label>Canvas.SetLeft(main_video, 100);<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
238. <Label.Background>
239.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
240. </Label.Background>
241. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
242. <Label.Background>
243.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
244. </Label.Background>
245. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
246. <Label.Background>
247.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
248. </Label.Background>
249. </Label>Canvas.SetZIndex(main_video, 1);<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
250. <Label.Background>
251.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
252. </Label.Background>
253. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
254. <Label.Background>
255.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
256. </Label.Background>
257. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
258. <Label.Background>
259.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
260. </Label.Background>
261. </Label>main_video.Width = 1366;<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
262. <Label.Background>
263.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
264. </Label.Background>
265. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
266. <Label.Background>
267.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
268. </Label.Background>
269. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
270. <Label.Background>
271.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
272. </Label.Background>
273. </Label>main_video.Height = 768;<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
274. <Label.Background>
275.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
276. </Label.Background>
277. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
278. <Label.Background>
279.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
280. </Label.Background>
281. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
282. <Label.Background>
283.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
284. </Label.Background>
285. </Label>Canvas.SetLeft(small_video, 150);<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
286. <Label.Background>
287.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
288. </Label.Background>
289. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
290. <Label.Background>
291.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
292. </Label.Background>
293. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
294. <Label.Background>
295.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
296. </Label.Background>
297. </Label>Canvas.SetTop(small_video, 500);<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
298. <Label.Background>
299.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
300. </Label.Background>
301. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
302. <Label.Background>
303.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
304. </Label.Background>
305. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
306. <Label.Background>
307.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
308. </Label.Background>
309. </Label>Canvas.SetZIndex(small_video, 2);<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
310. <Label.Background>
311.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
312. </Label.Background>
313. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
314. <Label.Background>
315.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
316. </Label.Background>
317. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
318. <Label.Background>
319.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
320. </Label.Background>
321. </Label>small_video.Width = 300;<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
322. <Label.Background>
323.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
324. </Label.Background>
325. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
326. <Label.Background>
327.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
328. </Label.Background>
329. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
330. <Label.Background>
331.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
332. </Label.Background>
333. </Label>small_video.Height = 168.75;<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
334. <Label.Background>
335.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
336. </Label.Background>
337. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
338. <Label.Background>
339.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
340. </Label.Background>
341. </Label>}<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
342. <Label.Background>
343.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
344. </Label.Background>
345. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
346. <Label.Background>
347.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
348. </Label.Background>
349. </Label>private void Window_ContentRendered(object sender, EventArgs e)<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
350. <Label.Background>
351.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
352. </Label.Background>
353. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
354. <Label.Background>
355.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
356. </Label.Background>
357. </Label>{<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
358. <Label.Background>
359.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
360. </Label.Background>
361. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
362. <Label.Background>
363.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
364. </Label.Background>
365. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
366. <Label.Background>
367.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
368. </Label.Background>
369. </Label>this.Tag = main_video.Name;<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
370. <Label.Background>
371.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
372. </Label.Background>
373. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
374. <Label.Background>
375.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
376. </Label.Background>
377. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
378. <Label.Background>
379.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
380. </Label.Background>
381. </Label>string url = "rtsp://xxx:xxx@192.168.1.120:554/ch1/main/av_stream";<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
382. <Label.Background>
383.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
384. </Label.Background>
385. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
386. <Label.Background>
387.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
388. </Label.Background>
389. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
390. <Label.Background>
391.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
392. </Label.Background>
393. </Label>LibVLCSharp.Shared.MediaPlayer player = new LibVLCSharp.Shared.MediaPlayer(_libvlc);<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
394. <Label.Background>
395.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
396. </Label.Background>
397. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
398. <Label.Background>
399.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
400. </Label.Background>
401. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
402. <Label.Background>
403.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
404. </Label.Background>
405. </Label>main_video.MediaPlayer = player;<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
406. <Label.Background>
407.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
408. </Label.Background>
409. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
410. <Label.Background>
411.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
412. </Label.Background>
413. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
414. <Label.Background>
415.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
416. </Label.Background>
417. </Label>using (LibVLCSharp.Shared.Media media = new Media(_libvlc, new Uri(url)))<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
418. <Label.Background>
419.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
420. </Label.Background>
421. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
422. <Label.Background>
423.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
424. </Label.Background>
425. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
426. <Label.Background>
427.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
428. </Label.Background>
429. </Label>{<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
430. <Label.Background>
431.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
432. </Label.Background>
433. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
434. <Label.Background>
435.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
436. </Label.Background>
437. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
438. <Label.Background>
439.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
440. </Label.Background>
441. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
442. <Label.Background>
443.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
444. </Label.Background>
445. </Label>main_video.MediaPlayer.Play(media);<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
446. <Label.Background>
447.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
448. </Label.Background>
449. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
450. <Label.Background>
451.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
452. </Label.Background>
453. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
454. <Label.Background>
455.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
456. </Label.Background>
457. </Label>}<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
458. <Label.Background>
459.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
460. </Label.Background>
461. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
462. <Label.Background>
463.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
464. </Label.Background>
465. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
466. <Label.Background>
467.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
468. </Label.Background>
469. </Label>string url2 = "rtsp://xxx:xxx@192.168.1.142:554/Streaming/Channels/1";<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
470. <Label.Background>
471.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
472. </Label.Background>
473. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
474. <Label.Background>
475.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
476. </Label.Background>
477. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
478. <Label.Background>
479.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
480. </Label.Background>
481. </Label>LibVLCSharp.Shared.MediaPlayer player2 = new LibVLCSharp.Shared.MediaPlayer(_libvlc);<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
482. <Label.Background>
483.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
484. </Label.Background>
485. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
486. <Label.Background>
487.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
488. </Label.Background>
489. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
490. <Label.Background>
491.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
492. </Label.Background>
493. </Label>small_video.MediaPlayer = player2;<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
494. <Label.Background>
495.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
496. </Label.Background>
497. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
498. <Label.Background>
499.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
500. </Label.Background>
501. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
502. <Label.Background>
503.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
504. </Label.Background>
505. </Label>using (LibVLCSharp.Shared.Media media = new Media(_libvlc, new Uri(url2)))<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
506. <Label.Background>
507.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
508. </Label.Background>
509. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
510. <Label.Background>
511.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
512. </Label.Background>
513. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
514. <Label.Background>
515.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
516. </Label.Background>
517. </Label>{<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
518. <Label.Background>
519.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
520. </Label.Background>
521. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
522. <Label.Background>
523.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
524. </Label.Background>
525. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
526. <Label.Background>
527.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
528. </Label.Background>
529. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
530. <Label.Background>
531.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
532. </Label.Background>
533. </Label>small_video.MediaPlayer.Play(media);<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
534. <Label.Background>
535.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
536. </Label.Background>
537. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
538. <Label.Background>
539.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
540. </Label.Background>
541. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
542. <Label.Background>
543.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
544. </Label.Background>
545. </Label>}<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
546. <Label.Background>
547.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
548. </Label.Background>
549. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
550. <Label.Background>
551.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
552. </Label.Background>
553. </Label>}<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
554. <Label.Background>
555.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
556. </Label.Background>
557. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
558. <Label.Background>
559.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
560. </Label.Background>
561. </Label>private void switch_Click(object sender, RoutedEventArgs e)<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
562. <Label.Background>
563.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
564. </Label.Background>
565. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
566. <Label.Background>
567.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
568. </Label.Background>
569. </Label>{<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
570. <Label.Background>
571.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
572. </Label.Background>
573. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
574. <Label.Background>
575.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
576. </Label.Background>
577. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
578. <Label.Background>
579.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
580. </Label.Background>
581. </Label>string url = "rtsp://xxx:xxx@192.168.1.120:554/ch1/main/av_stream";<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
582. <Label.Background>
583.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
584. </Label.Background>
585. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
586. <Label.Background>
587.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
588. </Label.Background>
589. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
590. <Label.Background>
591.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
592. </Label.Background>
593. </Label>string url2 = "rtsp://xxx:xxx@192.168.1.142:554/Streaming/Channels/1";<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
594. <Label.Background>
595.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
596. </Label.Background>
597. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
598. <Label.Background>
599.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
600. </Label.Background>
601. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
602. <Label.Background>
603.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
604. </Label.Background>
605. </Label>if (this.Tag as string != main_video.Name)<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
606. <Label.Background>
607.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
608. </Label.Background>
609. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
610. <Label.Background>
611.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
612. </Label.Background>
613. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
614. <Label.Background>
615.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
616. </Label.Background>
617. </Label>{<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
618. <Label.Background>
619.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
620. </Label.Background>
621. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
622. <Label.Background>
623.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
624. </Label.Background>
625. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
626. <Label.Background>
627.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
628. </Label.Background>
629. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
630. <Label.Background>
631.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
632. </Label.Background>
633. </Label>this.Tag = main_video.Name;<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
634. <Label.Background>
635.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
636. </Label.Background>
637. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
638. <Label.Background>
639.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
640. </Label.Background>
641. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
642. <Label.Background>
643.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
644. </Label.Background>
645. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
646. <Label.Background>
647.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
648. </Label.Background>
649. </Label>using (LibVLCSharp.Shared.Media media = new Media(_libvlc, new Uri(url)))<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
650. <Label.Background>
651.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
652. </Label.Background>
653. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
654. <Label.Background>
655.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
656. </Label.Background>
657. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
658. <Label.Background>
659.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
660. </Label.Background>
661. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
662. <Label.Background>
663.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
664. </Label.Background>
665. </Label>{<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
666. <Label.Background>
667.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
668. </Label.Background>
669. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
670. <Label.Background>
671.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
672. </Label.Background>
673. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
674. <Label.Background>
675.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
676. </Label.Background>
677. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
678. <Label.Background>
679.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
680. </Label.Background>
681. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
682. <Label.Background>
683.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
684. </Label.Background>
685. </Label>main_video.MediaPlayer.Play(media);<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
686. <Label.Background>
687.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
688. </Label.Background>
689. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
690. <Label.Background>
691.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
692. </Label.Background>
693. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
694. <Label.Background>
695.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
696. </Label.Background>
697. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
698. <Label.Background>
699.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
700. </Label.Background>
701. </Label>}<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
702. <Label.Background>
703.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
704. </Label.Background>
705. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
706. <Label.Background>
707.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
708. </Label.Background>
709. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
710. <Label.Background>
711.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
712. </Label.Background>
713. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
714. <Label.Background>
715.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
716. </Label.Background>
717. </Label>using (LibVLCSharp.Shared.Media media = new Media(_libvlc, new Uri(url2)))<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
718. <Label.Background>
719.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
720. </Label.Background>
721. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
722. <Label.Background>
723.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
724. </Label.Background>
725. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
726. <Label.Background>
727.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
728. </Label.Background>
729. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
730. <Label.Background>
731.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
732. </Label.Background>
733. </Label>{<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
734. <Label.Background>
735.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
736. </Label.Background>
737. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
738. <Label.Background>
739.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
740. </Label.Background>
741. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
742. <Label.Background>
743.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
744. </Label.Background>
745. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
746. <Label.Background>
747.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
748. </Label.Background>
749. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
750. <Label.Background>
751.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
752. </Label.Background>
753. </Label>small_video.MediaPlayer.Play(media);<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
754. <Label.Background>
755.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
756. </Label.Background>
757. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
758. <Label.Background>
759.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
760. </Label.Background>
761. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
762. <Label.Background>
763.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
764. </Label.Background>
765. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
766. <Label.Background>
767.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
768. </Label.Background>
769. </Label>}<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
770. <Label.Background>
771.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
772. </Label.Background>
773. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
774. <Label.Background>
775.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
776. </Label.Background>
777. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
778. <Label.Background>
779.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
780. </Label.Background>
781. </Label>}<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
782. <Label.Background>
783.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
784. </Label.Background>
785. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
786. <Label.Background>
787.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
788. </Label.Background>
789. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
790. <Label.Background>
791.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
792. </Label.Background>
793. </Label>else<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
794. <Label.Background>
795.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
796. </Label.Background>
797. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
798. <Label.Background>
799.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
800. </Label.Background>
801. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
802. <Label.Background>
803.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
804. </Label.Background>
805. </Label>{<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
806. <Label.Background>
807.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
808. </Label.Background>
809. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
810. <Label.Background>
811.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
812. </Label.Background>
813. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
814. <Label.Background>
815.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
816. </Label.Background>
817. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
818. <Label.Background>
819.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
820. </Label.Background>
821. </Label>this.Tag = small_video.Name;<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
822. <Label.Background>
823.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
824. </Label.Background>
825. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
826. <Label.Background>
827.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
828. </Label.Background>
829. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
830. <Label.Background>
831.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
832. </Label.Background>
833. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
834. <Label.Background>
835.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
836. </Label.Background>
837. </Label>using (LibVLCSharp.Shared.Media media = new Media(_libvlc, new Uri(url2)))<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
838. <Label.Background>
839.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
840. </Label.Background>
841. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
842. <Label.Background>
843.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
844. </Label.Background>
845. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
846. <Label.Background>
847.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
848. </Label.Background>
849. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
850. <Label.Background>
851.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
852. </Label.Background>
853. </Label>{<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
854. <Label.Background>
855.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
856. </Label.Background>
857. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
858. <Label.Background>
859.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
860. </Label.Background>
861. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
862. <Label.Background>
863.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
864. </Label.Background>
865. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
866. <Label.Background>
867.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
868. </Label.Background>
869. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
870. <Label.Background>
871.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
872. </Label.Background>
873. </Label>main_video.MediaPlayer.Play(media);<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
874. <Label.Background>
875.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
876. </Label.Background>
877. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
878. <Label.Background>
879.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
880. </Label.Background>
881. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
882. <Label.Background>
883.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
884. </Label.Background>
885. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
886. <Label.Background>
887.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
888. </Label.Background>
889. </Label>}<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
890. <Label.Background>
891.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
892. </Label.Background>
893. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
894. <Label.Background>
895.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
896. </Label.Background>
897. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
898. <Label.Background>
899.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
900. </Label.Background>
901. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
902. <Label.Background>
903.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
904. </Label.Background>
905. </Label>using (LibVLCSharp.Shared.Media media = new Media(_libvlc, new Uri(url)))<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
906. <Label.Background>
907.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
908. </Label.Background>
909. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
910. <Label.Background>
911.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
912. </Label.Background>
913. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
914. <Label.Background>
915.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
916. </Label.Background>
917. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
918. <Label.Background>
919.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
920. </Label.Background>
921. </Label>{<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
922. <Label.Background>
923.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
924. </Label.Background>
925. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
926. <Label.Background>
927.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
928. </Label.Background>
929. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
930. <Label.Background>
931.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
932. </Label.Background>
933. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
934. <Label.Background>
935.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
936. </Label.Background>
937. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
938. <Label.Background>
939.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
940. </Label.Background>
941. </Label>small_video.MediaPlayer.Play(media);<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
942. <Label.Background>
943.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
944. </Label.Background>
945. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
946. <Label.Background>
947.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
948. </Label.Background>
949. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
950. <Label.Background>
951.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
952. </Label.Background>
953. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
954. <Label.Background>
955.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
956. </Label.Background>
957. </Label>}<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
958. <Label.Background>
959.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
960. </Label.Background>
961. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
962. <Label.Background>
963.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
964. </Label.Background>
965. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
966. <Label.Background>
967.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
968. </Label.Background>
969. </Label>}<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
970. <Label.Background>
971.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
972. </Label.Background>
973. </Label><Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
974. <Label.Background>
975.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
976. </Label.Background>
977. </Label>}<Label  Width="70"  Height="70" Margin="5,0,5,0" Name="snapshot" MouseLeftButtonDown="snapshot_MouseLeftButtonDown"  Cursor="Hand">
978. <Label.Background>
979.     <ImageBrush ImageSource="/Images/small_video_hide.png" Stretch="Uniform"/>
980. </Label.Background>
981. </Label>}}

复制代码

• small_video显示在前，为小屏；main_video显示在后，全屏显示
  

画中画

画中画本质上还是视频的重叠，可以参考视频重叠的实现思路实现。
引用

• VideoLAN.LibVLC.Windows的nuget：https://www.nuget.org/packages/VideoLAN.LibVLC.Windows/3.0.17.4
  
• LibVLCSharp官网：https://code.videolan.org/videolan/LibVLCSharp
  

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来源:https://www.cnblogs.com/Naylor/archive/2023/02/14/17118993.html
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