基于C#和VLC.DotNet实现视频播放器开发指南

在C#开发环境中，通过集成VLC.DotNet库可以快速构建功能完善的视频播放器。本文将详细介绍如何使用VLC.DotNet.Forms和VideoLAN.LibVLC.Windows库实现本地和网络视频播放功能。

项目配置与依赖管理

项目配置文件需要包含VLC.DotNet和LibVLC的NuGet包引用，并指定.NET 6.0 Windows框架。以下是完整的项目配置示例：

<Project Sdk="Microsoft.NET.Sdk">
  <PropertyGroup>
    <OutputType>WinExe</OutputType>
    <TargetFramework>net6.0-windows</TargetFramework>
    <Nullable>enable</Nullable>
    <UseWindowsForms>true</UseWindowsForms>
  </PropertyGroup>
  <ItemGroup>
    <PackageReference Include="Vlc.DotNet.Forms" Version="3.1.0" />
    <PackageReference Include="VideoLAN.LibVLC.Windows" Version="3.0.16" />
  </ItemGroup>
</Project>

核心组件实现

VLC控件初始化

VLC控件初始化需要处理库路径检测和控件配置：

private readonly VlcControl vlcControl;

public Form1()
{
    InitializeComponent();
    
    // 初始化VLC控件
    vlcControl = new VlcControl();
    vlcControl.BeginInit();
    vlcControl.Dock = DockStyle.Fill;
    vlcControl.VlcLibDirectoryNeeded += OnVlcLibDirectoryNeeded;
    vlcControl.EndInit();
    Controls.Add(vlcControl);
    
    InitializeUI();
}

private void OnVlcLibDirectoryNeeded(object sender, VlcLibDirectoryNeededEventArgs e)
{
    var currentAssembly = System.Reflection.Assembly.GetEntryAssembly();
    var currentDirectory = new FileInfo(currentAssembly.Location).DirectoryName;
    if (currentDirectory == null) return;
    
    if (Environment.Is64BitProcess)
        e.VlcLibDirectory = new DirectoryInfo(Path.Combine(currentDirectory, "libvlc", "win-x64"));
    else
        e.VlcLibDirectory = new DirectoryInfo(Path.Combine(currentDirectory, "libvlc", "win-x86"));
}

播放控制界面实现

播放控制界面包含文件选择、播放控制和网络流播放功能：

private void InitializeUI()
{
    var panel = new FlowLayoutPanel
    {
        Dock = DockStyle.Bottom,
        Height = 50,
        BackColor = System.Drawing.Color.LightGray
    };

    var btnOpen = new Button { Text = "打开文件", Width = 80 };
    var btnPlay = new Button { Text = "播放", Width = 60 };
    var btnPause = new Button { Text = "暂停", Width = 60 };
    var btnStop = new Button { Text = "停止", Width = 60 };
    var txtUrl = new TextBox { Width = 200, Text = "输入视频URL" };

    btnOpen.Click += (s, e) => {
        var dialog = new OpenFileDialog();
        if (dialog.ShowDialog() == DialogResult.OK)
        {
            vlcControl.Play(new FileInfo(dialog.FileName));
        }
    };

    btnPlay.Click += (s, e) => vlcControl.Play();
    btnPause.Click += (s, e) => vlcControl.Pause();
    btnStop.Click += (s, e) => vlcControl.Stop();

    var btnStream = new Button { Text = "播放网络流", Width = 100 };
    btnStream.Click += (s, e) => {
        if (!string.IsNullOrWhiteSpace(txtUrl.Text))
            vlcControl.Play(new Uri(txtUrl.Text));
    };

    panel.Controls.AddRange(new Control[] { btnOpen, btnPlay, btnPause, btnStop, txtUrl, btnStream });
    Controls.Add(panel);
}

程序入口配置

程序入口需要配置Windows Forms应用程序的基础设置：

using System;
using System.Windows.Forms;

namespace VideoPlayer
{
    static class Program
    {
        [STAThread]
        static void Main()
        {
            Application.EnableVisualStyles();
            Application.SetCompatibleTextRenderingDefault(false);
            Application.Run(new Form1());
        }
    }
}

功能特性总结

功能特性	实现方式
自动库路径检测	通过进程架构判断x86/x64目录
本地文件播放	使用OpenFileDialog选择文件
网络流播放	通过Uri对象输入播放地址
播放控制	调用VlcControl的Play/Pause/Stop方法
界面布局	使用FlowLayoutPanel实现响应式设计

 

使用说明

1. 创建新项目并替换.csproj文件
2. 添加Form1.cs和Program.cs代码文件
3. 通过NuGet安装依赖包
4. 编译运行项目

 

摘自https://comate.baidu.com/zh/page/wpkdteyik8h