LibVLCSharp で動画再生

◆LibVLCSharp を用いて動画再生手順

１．準備
●OS:Windows 10 Pro 64bit Version 21H2
●IDE:Visual Studio Community 2022 Version 17.3.1
２．新しいプロジェクトの作成

Visual Studio 2022 を起動
＜ファイル(F)＞ → ＜新規作成(N)＞ →
WPFアプリケーションを選択 →
＜次へ(N)＞

プロジェクト名：　VLCMediaPlayer
ソリューション名：　VLCMediaPlayer_Example
＜次へ(N)＞

.NET 6.0(長期的なサポート)を選択
＜作成(C)＞

＜プロジェクト(P)＞ → ＜Nugetパッケージの管理(N)＞ → 
LibVLCSharp を検索して、インストール

LibVLCSharp.WPF を検索して、インストール

VideoLAN.LibVLC.Windows を検索して、インストール

３．MainWindow.xaml

ここを参照すること

001: <Window x:Class="VLCMediaPlayer.MainWindow"
002:         xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
003:         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
004:         xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
005:         xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
006:         xmlns:local="clr-namespace:VLCMediaPlayer"
007:         xmlns:uc="clr-namespace:LibVLCSharp.WPF;assembly=LibVLCSharp.WPF"
008:         mc:Ignorable="d"
009:         Title="Media Player" Height="450" Width="800" Closed="MainWindow_Closed">
010:     <Grid>
011:         <uc:VideoView x:Name="VideoView" MediaPlayer="{Binding" Path="VideoPlayer}" Panel.ZIndex="1">
012:             <StackPanel Orientation="Horizontal" x:Name="videoPanel">
013:                 <Button Content="PLAY" Height="25" Width="50" VerticalAlignment="Bottom" HorizontalAlignment="Left" Click="PlayButton_Click" />
014:                 <Button Content="STOP" Height="25" Width="50" VerticalAlignment="Bottom" HorizontalAlignment="Left" Click="StopButton_Click" />
015:             </StackPanel>
016:         </uc:VideoView>
017:     </Grid>
018: </Window>

４．MainWindow.xaml.cs

001: using LibVLCSharp.Shared;
002: using System;
003: using System.IO;
004: using System.Windows;
005: using System.Windows.Controls;
006: using System.Windows.Media;
007: using MediaPlayer = LibVLCSharp.Shared.MediaPlayer;
008: 
009: 
010: namespace VLCMediaPlayer
011: {
012:     /// <summary>
013:     /// Interaction logic for MainWindow.xaml
014:     /// </summary>
015:     public partial class MainWindow : Window
016:     {
017:         LibVLC _libVLC;
018:         MediaPlayer _mediaPlayer;
019:         Label _label;
020:         public MainWindow()
021:         {
022:             InitializeComponent();
023:             _label = new Label
024:             {
025:                 Content = "TEST",
026:                 HorizontalAlignment = HorizontalAlignment.Right,
027:                 VerticalAlignment = VerticalAlignment.Bottom,
028:                 Foreground = new SolidColorBrush(Colors.Red)
029:             };
030:             videoPanel.Children.Add(_label);
031:             _libVLC = new LibVLC();
032:             _mediaPlayer = new MediaPlayer(_libVLC);
033:             // we need the VideoView to be fully loaded before setting a MediaPlayer on it.
034:             VideoView.Loaded += (sender, e) => VideoView.MediaPlayer = _mediaPlayer;
035:         }
036: 
037:         /// <summary>
038:         /// MediaPlayer再生開始
039:         /// </summary>
040:         /// <param name="sender"></param>
041:         /// <param name="e"></param>
042:         private void PlayButton_Click(object sender, RoutedEventArgs e)
043:         {
044:             if (!_mediaPlayer.IsPlaying)
045:             {
046:                 string _myVideoPath = System.Environment.GetFolderPath(Environment.SpecialFolder.MyVideos);
047:                 string _fileName = _myVideoPath ?? "C:";
048:                 _fileName += @"\sample.mp4";
049:                 if (File.Exists(_fileName))
050:                 {
051:                     _label.Content = _fileName; // ファイル名表示
052:                     using (var media = new Media(_libVLC, new Uri(_fileName)))
053:                         _mediaPlayer.Play(media);
054:                 }
055:             }
056:         }
057: 
058:         /// <summary>
059:         /// MediaPlayer再生停止
060:         /// </summary>
061:         /// <param name="sender"></param>
062:         /// <param name="e"></param>
063:         private void StopButton_Click(object sender, RoutedEventArgs e)
064:         {
065:             if (_mediaPlayer.IsPlaying)
066:             {
067:                 _mediaPlayer.Stop();
068:             }
069:         }
070: 
071:         /// <summary>
072:         /// Window閉じるときの手当
073:         /// </summary>
074:         /// <param name="sender"></param>
075:         /// <param name="e"></param>
076:         private void MainWindow_Closed(object sender, EventArgs e)
077:         {
078:             _mediaPlayer.Stop();
079:             _mediaPlayer.Dispose();
080:             _libVLC.Dispose();
081:         }
082:     }
083: }
084: 

５．動画ファイルの用意

ビデオフォルダに sample.mp4 を用意

６．実行

＜デバッグ(D)＞ → ＜デバッグの開始(S)＞
＜PLAY＞
動画の再生開始を確認

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