Sur d’autres sites (5252)

• how to get the output of a child process in a variable c#

  4 août 2022, par Dokoa

  I want to get width, height information into a variable after ffprobe is finished.

  


  int width, height;   
Process pr = new Process();
                pr.StartInfo.FileName = "ffprobe";
                pr.StartInfo.Arguments = $"- v error - select_streams v: 0 - show_entries stream = width,height - of default = nw = 1 input.mp4";
                pr.StartInfo.UseShellExecute = false;
                pr.StartInfo.CreateNoWindow = true;
                pr.EnableRaisingEvents = true;
                pr.Start();


  


  example of ffprobe console output

  


  width=320
height=180


  


• merge two mp4 video as single video using ffmpeg in C# is not working

  13 février 2016, par kapil darji

  For the last 4 hours I’ve been trying to combine 2 .mp4 files into one using ffmpeg in C#.

  ****My code is below :****

     public void MergeFiles(string strFile)
  
      {
  
          string strParam;
  
  
  
          string Path_FFMPEG = Server.MapPath("~/Video_Clips/ffmpeg.exe");
  
  
  
          //Merging two videos               
  
          String video1 = Server.MapPath("~/Videos/fast1.mp4");
  
          String video2 = Server.MapPath("~/Videos/fast2.mp4");
  
          String file = Server.MapPath("~/Videos/input.txt");
  
          String strResult =   Server.MapPath("~/Videos/ConvertedFiles/Output.mp4");
  
  
  
          strParam = " -f concat -i " + file + " -c copy " + strResult;
  
  
  
          process(Path_FFMPEG, strParam);
  
      }
  
  
  
     public void process(string Path_FFMPEG, string strParam)
  
      {
  
          try
  
          {
  
              Process ffmpeg = new Process();
  
              ProcessStartInfo ffmpeg_StartInfo = new ProcessStartInfo(Path_FFMPEG, strParam);
  
              ffmpeg_StartInfo.UseShellExecute = false;
  
              ffmpeg_StartInfo.RedirectStandardError = true;
  
              ffmpeg_StartInfo.RedirectStandardOutput = true;
  
              ffmpeg.StartInfo = ffmpeg_StartInfo;
  
              ffmpeg_StartInfo.CreateNoWindow = true;
  
              ffmpeg.EnableRaisingEvents = true;
  
              ffmpeg.Start();
  
              ffmpeg.WaitForExit(30000);
  
              //ffmpeg.WaitForExit();
  
              ffmpeg.Close();
  
              ffmpeg.Dispose();
  
              ffmpeg = null;
  
          }
  
          catch (Exception ex)
  
          {
  
  
  
          }
  
      }

  My input.txt file is below :

  List of Files to Join (Comment)

  file ’D :/Kapil_WorkSpace/ExtraProjectSource/VideoDemo/VideoDemo/Videos/fast1.mp4’

  file ’D :/Kapil_WorkSpace/ExtraProjectSource/VideoDemo/VideoDemo/Videos/fast2.mp4’

  Please help. Thanks in advance.

• Converting video mp4 file to gif file in asp.net ?

  14 juillet 2018, par Jonny

  I am developing an web app in asp.net where I want to convert mp4 file to animated gif file. I created a sample in C# console app to test my logic where it worked smoothly but when I tried to implement the same logic in asp.net it is not working.

  I am using FFmpeg.exe to convert the videos.
  Here is my code that executes on Button Click. Any help would be appreciated.

  try
  
  {
  
      //srcLink = Session["videoPath"].ToString();
  
      System.Diagnostics.Process grabInfoProcess;
  
      grabInfoProcess = new System.Diagnostics.Process();
  
      grabInfoProcess.StartInfo.UseShellExecute = false;
  
      grabInfoProcess.StartInfo.RedirectStandardOutput = true;
  
      grabInfoProcess.StartInfo.RedirectStandardError = true;
  
      grabInfoProcess.StartInfo.CreateNoWindow = true;
  
      grabInfoProcess.StartInfo.FileName = Request.PhysicalApplicationPath + "FFmpeg\\ffmpeg.exe";
  
      grabInfoProcess.StartInfo.Arguments = "-ss 00:00:01 -t 00:00:15" + " -i " + Request.PhysicalApplicationPath + "videos\\test2.mp4" + " " + Request.PhysicalApplicationPath + "DestVideos\\animated.gif";
  
      //ffmpeg - i source_video.avi animated_gif.gif
  
      grabInfoProcess.Start();
  
      string output = grabInfoProcess.StandardOutput.ReadToEnd();
  
      string newoutput = grabInfoProcess.StandardError.ReadToEnd();
  
      grabInfoProcess.WaitForExit();
  
  
  
  }
  
  catch (Exception ex)
  
  {
  
      Page.ClientScript.RegisterStartupScript(this.GetType(), "scriptkey", "alert('" + ex.Message.ToString() + "');");
  
  }