312 lines
8.9 KiB
C#
312 lines
8.9 KiB
C#
using System;
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using System.Diagnostics;
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using System.IO;
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using System.Linq;
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using System.Text;
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using System.Windows;
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using System.Windows.Shapes;
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using WPFDevelopers.Helpers;
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using File = System.IO.File;
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namespace VideoConcat
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{
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/// <summary>
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/// Video.xaml 的交互逻辑
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/// </summary>
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public partial class Video : Window
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{
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public string text = "", outPut = "";
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public Dictionary<int, string[]> videoFolders = [];
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private static string Path = "", ParentPath = "";
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public Dictionary<int, A> AllPublicCombinVideos = [];
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int GenerateVideoCount = 0;
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public static readonly log4net.ILog log = log4net.LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);
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public Video()
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{
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InitializeComponent();
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Init();
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}
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public static void Init()
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{
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ParentPath = Directory.GetCurrentDirectory();
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log4net.Config.XmlConfigurator.Configure();
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}
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private async void Button_Click(object sender, RoutedEventArgs e)
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{
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try
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{
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GenerateVideoCount = int.Parse(videoCount.Text);
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}
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catch (Exception)
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{
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MessageBox.Show("请输入正确的数字");
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return;
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}
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WriteTxt($"生成视频的个数:{GenerateVideoCount} 个");
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Check_Folder();
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MakeOutPutDir();
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startButton.IsEnabled = false;
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GenerateAllvideos(videoFolders);
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var dateStart = DateTime.Now; //记录用时的起始时间
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await Task.Run(async () =>
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{
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List<List<string>> lists = GenerateAllvideos(videoFolders);
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await MockIOPerformanceAsync(lists);
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startButton.Dispatcher.Invoke(() =>
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{
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startButton.IsEnabled = true;
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});
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});
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var dateEnd = DateTime.Now;
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var timeSpan = dateEnd - dateStart;//记录开票用时
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WriteTxt($"用时：{timeSpan.TotalSeconds}秒");
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}
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private void Check_Folder()
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{
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DirectoryInfo? directory = Directory.GetParent(ParentPath);
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if (directory == null)
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{
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WriteTxt("获取视频路径失败!");
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return;
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}
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Path = directory.FullName;
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WriteTxt("当前目录为:" + Path);
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videoFolders.Clear();
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AllPublicCombinVideos.Clear();
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try
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{
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int k = 1;
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for (int i = 100; i >0; i--)
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{
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var folder = string.Format("{0:D2}", i);
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string currentFolderPath = $"{Path}\\{folder}";
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if (Directory.Exists(currentFolderPath))
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{
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string[] videos = GetAllVideos(currentFolderPath);
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if (videos.Length > 0)
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{
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videoFolders.Add(k, videos);
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AllPublicCombinVideos.Add(k, new A());
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k++;
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}
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}
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}
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return;
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}
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catch (Exception ex)
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{
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MessageBox.Show(ex.Message);
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return;
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}
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}
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private void WriteTxt(string str)
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{
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outputTxt.Dispatcher.Invoke(() =>
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{
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log.Info(str);
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text += str + "\r\n";
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outputTxt.Text = text;
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scrowText.ScrollToEnd();
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});
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}
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public static string[] GetAllVideos(string path)
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{
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return Directory.GetFiles(path, "*.mp4", SearchOption.AllDirectories);
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}
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public void CombineMp4WithoutTxt(List<string> files, string StrOutMp4Path)
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{
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Process p = new();//建立外部调用线程
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p.StartInfo.FileName = Directory.GetCurrentDirectory() + "\\ffmpeg.exe";//要调用外部程序的绝对路径
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//int i = 0;
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//string vao = "";
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List<string> ooootext = [];
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files.Reverse();
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files.ForEach(file =>
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{
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//#file = System.Web.HttpUtility.UrlEncode(file);
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ooootext.Add($"file '{file}'");
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});
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var random = new Random();
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string tmpConcatFile = $"{outPut}\\{Guid.NewGuid()}{random.Next(100000, 999999)}.aaa";
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// 也可以指定编码方式
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//File.WriteAllLines(tmpConcatFile, ooootext, Encoding.UTF8);
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File.WriteAllText(tmpConcatFile, string.Join("\n", [.. ooootext]), new System.Text.UTF8Encoding(false));
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string StrArg = $"-f concat -safe 0 -i {tmpConcatFile} -bsf:a aac_adtstoasc -movflags +faststart -c copy {StrOutMp4Path}";
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//string StrArg = $"-i {combineFile} -filter_complex \"{vao} concat=n={i}:v=1:a=1 [v][a]\" -map \"[v]\" -map \"[a]\" {StrOutMp4Path}";
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p.StartInfo.Arguments = StrArg;
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p.StartInfo.UseShellExecute = false;//不使用操作系统外壳程序启动线程(一定为FALSE,详细的请看MSDN)
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p.StartInfo.RedirectStandardError = true;//把外部程序错误输出写到StandardError流中(这个一定要注意,FFMPEG的所有输出信息,都为错误输出流,用StandardOutput是捕获不到任何消息的...这是我耗费了2个多月得出来的经验...mencoder就是用standardOutput来捕获的)
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p.StartInfo.CreateNoWindow = true;//不创建进程窗口
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p.ErrorDataReceived += new DataReceivedEventHandler(Output);//外部程序(这里是FFMPEG)输出流时候产生的事件,这里是把流的处理过程转移到下面的方法中,详细请查阅MSDN
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p.Start();//启动线程
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p.BeginErrorReadLine();//开始异步读取
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p.WaitForExit();//阻塞等待进程结束
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p.Close();//关闭进程
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p.Dispose();//释放资源
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if (File.Exists(tmpConcatFile))
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{
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try
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{
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File.Delete(tmpConcatFile);
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}
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catch
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{
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}
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}
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}
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private void Output(object sendProcess, DataReceivedEventArgs output)
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{
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if (!String.IsNullOrEmpty(output.Data))
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{
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log.Info(output.Data, null);
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}
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}
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public void MakeOutPutDir()
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{
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outPut = $"{Path}\\output";
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if (!Directory.Exists(outPut))
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{
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Directory.CreateDirectory(outPut);
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}
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}
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public async Task<IEnumerable<string>> MockIOPerformanceAsync(List<List<string>> ls)
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{
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List<string> lss = [];
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List<Task> tasks = [];
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foreach (var item in ls)
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{
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Task task = new(() =>
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{
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DateTime now = DateTime.Now;
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Random random = new();
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string randomString = random.Next(100000, 999999).ToString();
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string result = now.ToString("yyyyMMddHHmmss") + randomString;
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CombineMp4WithoutTxt(item, $"{outPut}\\{result}.mp4");
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});
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tasks.Add(task);
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task.Start();
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if (tasks.Count >= GenerateVideoCount)
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{
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break;
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}
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}
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foreach (var item in tasks)
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{
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await item;
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}
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return lss;
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}
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private static List<List<string>> GenerateAllvideos(Dictionary<int, string[]> dict)
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{
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List<List<string>> ls = [];
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foreach (var item in dict)
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{
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ls.Add(new List<string>(item.Value));
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}
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List<List<string>> permutations = CalculatePermutations(ls);
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return permutations;
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}
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static List<List<string>> CalculatePermutations(List<List<string>> inputList)
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{
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List<List<string>> result = [];
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// 递归计算全排列的辅助函数
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void Permute(List<string> currentPermutation, int index)
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{
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if (index == inputList.Count)
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{
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result.Add(new List<string>(currentPermutation));
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return;
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}
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foreach (string item in inputList[index])
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{
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currentPermutation.Add(item);
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Permute(currentPermutation, index + 1);
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currentPermutation.RemoveAt(currentPermutation.Count - 1);
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}
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}
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Permute([], 0);
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return result;
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}
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}
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public class A
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{
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public int Index { get; set; }
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};
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}
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