.HttpGet() 是我自己封装的HTTP请求方法

下载网络文件方法

/// <summary>
/// 下载网络文件
/// </summary>
/// <param name="url">文件地址</param>
/// <param name="savePath">保存路径</param>
public static void DownloadFile(this string url, string savePath)
{WebClient wc = new WebClient();//从路径中取得文件名称var name = Path.GetFileName(url);if (name.Contains("?")){name = name.Split("?")[0];}if (savePath.Last() != '/'){savePath += "/";}// 创建文件夹Directory.CreateDirectory(savePath);if(string.IsNullOrEmpty(name)) {return;}wc.DownloadFile(url, savePath + name);
}

下载m3u8

//ts保存路径
string tspath = "C:/Users/Administrator/Desktop/ts/";
//mp4保存路径
string mp4path = "C:/Users/Administrator/Desktop/mp4/";// m3u8链接
string m3u8url = "https://v6.nfm3u8.com/20220802/dg9qcubn/hls/index.m3u8";// 获取清单
string m3u8_content = m3u8url.HttpGet();// 按换行符转换成数组，筛选掉空行和不是链接的行
List<string> m3u8_list = m3u8_content.Split("\n").Where(x => !x.StartsWith("#") && !string.IsNullOrEmpty(x.Trim())).ToList();//下载线程数，多线程下载必须做限制，不然太夸张会导致崩溃
//10个线程刚刚好
int s = 0;
int progress = 0;//下载进度foreach (string ts_url in m3u8_list) {//多线程下载Task.Run(() =>{s++;ts_url.DownloadFile(tspath);progress++;s--;});//等待空闲线程while (true){//每0.1秒创建1个新的线程Task.Delay(100).Wait();//如果当前线程数量小于10个，跳出等待，开始下载下一条if (s < 10){break;}}}//等待全部ts下载完成
while (true)
{if (progress < m3u8_list.Count){Task.Delay(300).Wait();}else{break;}
}//按顺序将ts合并成mp4
using (FileStream fs = new FileStream($"{mp4path}video.mp4", FileMode.Create))
{foreach (var _u in m3u8_list){var name = Path.GetFileName(_u);using (FileStream fs1 = new FileStream(tspath+name, FileMode.Open)){fs1.CopyTo(fs);}}
}//删除ts缓存
Task.Delay(500).Wait();
foreach (string filePath in Directory.GetFiles(tspath))
{File.Delete(filePath);
}Console.WriteLine("下载完成："+ $"{mp4path}video.mp4");Console.ReadLine();