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- using System;
- using System.Collections.Generic;
- using System.Diagnostics;
- using System.Linq;
- using System.Text;
- using VisioForge.Shared.NAudio.CoreAudioApi;
- using VisioForge.Shared.NAudio.Wave;
-
- namespace Common.system
- {
- /// <summary>
- /// ffmpeg帮助类
- /// 需要安装\ffmpeg\bin\Setup Screen Capturer Recorder v0.12.10.exe
- /// 本地调试需要配置环境变量 将ffmpeg.exe位置配置到环境变量的path中
- /// </summary>
- public class FFMpeg
- {
- Process myProcess = null;
-
- /// <summary>
- /// 录屏
- /// </summary>
- /// <param name="PathName">文件存储路径</param>
- public void RunFFmpeg(string PathName)
- {
- Process[] KillProcessArray = Process.GetProcessesByName("ffmpeg");
- Debug.WriteLine(KillProcessArray.Length.ToString());
- foreach (var KillProcess in KillProcessArray)
- {
- KillProcess.Kill();
- }
- myProcess = new Process();
- string MicrophoneName = GetMicrophone();
- myProcess.StartInfo.FileName = FileToolsCommon.GetFileAbsolutePath(@"/ffmpeg/bin/ffmpeg.exe"); //ffmpeg.exe的绝对路径
- if(string.IsNullOrWhiteSpace(MicrophoneName))
- {
- myProcess.StartInfo.Arguments = "-f dshow -i video=\"screen-capture-recorder\" -f dshow -i audio=\"virtual-audio-capturer\" -vcodec libx264 -acodec libmp3lame -r 15 -crf 22 -f avi " + PathName; //ffmpeg的参数
- }
- else
- {
- myProcess.StartInfo.Arguments = "-f dshow -i audio=\"virtual-audio-capturer\" -f dshow -i audio=\"" + MicrophoneName + "\" -filter_complex amix=inputs=2:duration=first:dropout_transition=2 -f dshow -i video=\"screen-capture-recorder\" -pix_fmt yuv420p -vcodec h264 -preset:v ultrafast -tune:v zerolatency -acodec aac -ar 44100 -ac 2 -f avi " + PathName; //ffmpeg的参数
-
- }
- myProcess.StartInfo.UseShellExecute = false; //不使用操作系统外壳程序启动
- myProcess.StartInfo.RedirectStandardError = true; //重定向标准错误输出
- myProcess.StartInfo.CreateNoWindow = true; //不显示程序窗口
- myProcess.StartInfo.RedirectStandardInput = true; //用于模拟该进程控制台的输入
- myProcess.ErrorDataReceived += new DataReceivedEventHandler(Output);
- myProcess.Start();
- myProcess.BeginErrorReadLine();
- }
- /// <summary>
- /// 停止录制
- /// </summary>
- public void StopFFmpeg()
- {
- //Thread.Sleep(3000);
- if (myProcess == null)
- return;
- myProcess.StandardInput.WriteLine("q");//在这个进程的控制台中模拟输入q,用于暂停录制
- myProcess.Close();
- myProcess.Dispose();
- myProcess = null;
- //myProcess.Kill();
- }
- /// <summary>
- /// 输出结果
- /// </summary>
- /// <param name="sendProcess"></param>
- /// <param name="output"></param>
- private void Output(object sendProcess, DataReceivedEventArgs output)
- {
- if (!String.IsNullOrEmpty(output.Data))
- Debug.WriteLine(output.Data.ToString());
- }
-
- /// <summary>
- /// 合成视频
- /// </summary>
- /// <param name="ImageListPath">图片列表位置 命名为1.png</param>
- /// <param name="Mp3Path">MP3音频位置</param>
- /// <param name="VideoSavePath">视频保存位置</param>
- /// <param name="frequency">每秒帧率</param>
- private void SynthesisVideo(string ImageListPath,string Mp3Path,string VideoSavePath,int frequency)
- {
- Process[] KillProcessArray = Process.GetProcessesByName("ffmpeg");
- Debug.WriteLine(KillProcessArray.Length.ToString());
- foreach (var KillProcess in KillProcessArray)
- {
- KillProcess.Kill();
- }
- Process myProcess = new Process();
- this.myProcess.StartInfo.FileName = FileToolsCommon.GetFileAbsolutePath(@"/ffmpeg/bin/ffmpeg.exe"); //ffmpeg.exe的绝对路径
- myProcess.StartInfo.Arguments = @"-y -r "+ frequency + " -i " +
- ImageListPath + @"%d.png -i " +
- Mp3Path + @" -s 800x800 -vcodec mpeg4 " +
- VideoSavePath;
- myProcess.StartInfo.UseShellExecute = false;
- myProcess.StartInfo.RedirectStandardError = true;
- myProcess.StartInfo.CreateNoWindow = true;
- //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
- myProcess.ErrorDataReceived += new DataReceivedEventHandler(Output);
- //p.ErrorDataReceived += new DataReceivedEventHandler((s, message) => { Console.WriteLine(message.Data); });
- myProcess.Start();//启动线程
- myProcess.BeginErrorReadLine();//开始异步读取
- myProcess.WaitForExit();//阻塞等待进程结束
- myProcess.Close();//关闭进程
- myProcess.Dispose();//释放资源
- }
-
- //private void P_ErrorDataReceived(object sender, DataReceivedEventArgs e)
- //{
- // //+= new DataReceivedEventHandler((s, message) => { Console.WriteLine(message.Data); })
- // using (StreamWriter fs = new StreamWriter("E:\\项目\\测试\\Wpf测试\\bin\\Debug\\ffmpeg\\log.txt", true))
- // {
- // fs.WriteLine(e.Data);
- // }
- //}
-
- /// <summary>
- /// 获取麦克风
- /// </summary>
- string GetMicrophone()
- {
- List<string> devs = new List<string>();
-
- MMDeviceEnumerator enumberator = new MMDeviceEnumerator();
- MMDeviceCollection deviceCollection = enumberator.EnumerateAudioEndPoints(DataFlow.Capture, DeviceState.All);
- for (int waveInDevice = 0; waveInDevice < WaveIn.DeviceCount; waveInDevice++)
- {
- WaveInCapabilities deviceInfo = WaveIn.GetCapabilities(waveInDevice);
- foreach (MMDevice device in deviceCollection)
- {
- try
- {
-
- if (device.FriendlyName.StartsWith(deviceInfo.ProductName))
- {
- devs.Add(device.FriendlyName);
- break;
- }
- }
- catch (Exception)
- {
-
- }
- }
- }
- if (devs.Count > 0)
- {
- return devs[0];
- }
- else
- {
- return "";
- }
- }
- }
- }
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