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• C# Windows Forms Using FFMPEG to change video format got no response

  21 mai 2023, par TSLee

  I am trying to make an exe program to change a video format by using FFMPEG instead of doing it in the terminal. The formatted video will be saved in the download folder. I have tried my code below and got no output response. I wonder if I used process() and StartInfo correctly, as examples I found and the documentation just confused me. I have double-checked the ffmpeg.exe is in the bin folder and the StartInfo() is just for getting information, which is under Process(). This is why Process() can access the information and use Start() to start the process. Please help and correct my understanding.
Below is part of my code :

  


  private void convertButton_Click(object sender, EventArgs e)
    {
        String input = filepathTextBox.Text;
        String outputResolution = resolutionLabel.Text;
        String output;
        String outputFileType;
        int inputLength = input.Length;
        int l = 0;
        for (int i = (inputLength - 1); inputLength > -1; i--)
        {
            if (input[i] == '.')
            {
                l = i;
                break;
            }
        }
        output = input.Substring(0, l - 1);
        outputFileType = input.Substring(l + 1, inputLength - 1);
        Process process = new Process();
        process.StartInfo.UseShellExecute = true;
        process.StartInfo.FileName = "ffmpeg.exe";
        process.StartInfo.WorkingDirectory = @"C:\Users\User\Downloads\ffmpeg-2023-05-15-git-2953ebe7b6-full_build\bin";
        process.StartInfo.Arguments = "ffmpeg -i" + @"C:\Users\User\Downloads\file_example_MP4_640_3MG.mp4" + "-s 320x240 -r 25 -b:v 500000 -pix_fmt yuv420p -c:v libx264     -vprofile baseline -level  2.1 -x264opts  stitchable=1:level=3.0:keyint=15:ref=1:merange=16:mvrange=32 -acodec pcm_s16le -ar 16000 -ac 1" + @"C:\Users\User\Downloads\440.mp4";
        process.Start();
    }


  


  Output :
"myprogram.exe(CoreCLR : clrhost) : Loaded 'C :\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.15\System.Diagnostics.Process.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled."
The thread 0x79e0 has exited with code 0 (0x0).

  


• using ffmpeg in Azure function to cut files using c#

  22 janvier 2019, par abhishekmoondra1989

  I have written an Azure function in C# which will cut a big mp4 files into some small duration. I have copied everything that is required (ffmpeg executeable, video file) in home directory via KUDU console. But when I run the the function it runs for more than 5 minutes and it doesn’t give any files in the home directory.

  Function :

  using System;
  
  using System.Diagnostics;
  
  
  
  public static void Run(string input, TraceWriter log)
  
  {
  
      log.Info("Executing");
  
      using (var process = new Process())
  
      {
  
          process.StartInfo.FileName = @"D:\home\ffmpeg.exe";
  
          process.StartInfo.Arguments = @"-i D:\home\AmnestyInternational.mp4 -ss 00:00:03 -t 00:00:08 -async 1 D:\home\cut.mp4";
  
          process.StartInfo.UseShellExecute = false;
  
          process.StartInfo.RedirectStandardOutput = true;
  
          process.StartInfo.RedirectStandardError = true;
  
          log.Info(Directory.GetCurrentDirectory());
  
          log.Info("Cutting starts:"+DateTime.Now.ToString("h:mm:ss tt"));
  
          process.Start();
  
          string output = process.StandardOutput.ReadToEnd();
  
          process.WaitForExit();
  
          log.Info("Cutting ends :"+DateTime.Now.ToString("h:mm:ss tt"));
  
          log.Info(output);
  
      }
  
  }

  Output seen on Azure function Console :

  2017-03-24T11:06:00.705 Function started (Id=df082f54-719a-415f-b7f1-b10548a213be)
  
  2017-03-24T11:06:00.721 Executing
  
  2017-03-24T11:06:00.721 D:\Windows\system32
  
  2017-03-24T11:06:00.721 Cutting start :11:06:00 AM
  
  2017-03-24T11:07:14  No new trace in the past 1 min(s).
  
  2017-03-24T11:08:14  No new trace in the past 2 min(s).
  
  2017-03-24T11:09:14  No new trace in the past 3 min(s).
  
  2017-03-24T11:10:14  No new trace in the past 4 min(s).
  
  2017-03-24T11:11:00.758 Microsoft.Azure.WebJobs.Host: Timeout value of 00:05:00 was exceeded by function: Functions.ManualTriggerCSharp1.

  When I try to execute this same command on KUDU console or my own PC it only take 1.5 mins and I get a file of the desired duration

  Could anyone please help me with this ? What I might be missing ?

• using ffmpeg in Azure function to cut files using c#

  24 mars 2017, par abhishekmoondra1989

  I have written an Azure function in C# which will cut a big mp4 files into some small duration. I have copied everything that is required (ffmpeg executeable, video file) in home directory via KUDU console. But when I run the the function it runs for more than 5 minutes and it doesn’t give any files in the home directory.

  Function :

  using System;
  
  using System.Diagnostics;
  
  
  
  public static void Run(string input, TraceWriter log)
  
  {
  
      log.Info("Executing");
  
      using (var process = new Process())
  
      {
  
          process.StartInfo.FileName = @"D:\home\ffmpeg.exe";
  
          process.StartInfo.Arguments = @"-i D:\home\AmnestyInternational.mp4 -ss 00:00:03 -t 00:00:08 -async 1 D:\home\cut.mp4";
  
          process.StartInfo.UseShellExecute = false;
  
          process.StartInfo.RedirectStandardOutput = true;
  
          process.StartInfo.RedirectStandardError = true;
  
          log.Info(Directory.GetCurrentDirectory());
  
          log.Info("Cutting starts:"+DateTime.Now.ToString("h:mm:ss tt"));
  
          process.Start();
  
          string output = process.StandardOutput.ReadToEnd();
  
          process.WaitForExit();
  
          log.Info("Cutting ends :"+DateTime.Now.ToString("h:mm:ss tt"));
  
          log.Info(output);
  
      }
  
  }

  Output seen on Azure function Console :

  2017-03-24T11:06:00.705 Function started (Id=df082f54-719a-415f-b7f1-b10548a213be)
  
  2017-03-24T11:06:00.721 Executing
  
  2017-03-24T11:06:00.721 D:\Windows\system32
  
  2017-03-24T11:06:00.721 Cutting start :11:06:00 AM
  
  2017-03-24T11:07:14  No new trace in the past 1 min(s).
  
  2017-03-24T11:08:14  No new trace in the past 2 min(s).
  
  2017-03-24T11:09:14  No new trace in the past 3 min(s).
  
  2017-03-24T11:10:14  No new trace in the past 4 min(s).
  
  2017-03-24T11:11:00.758 Microsoft.Azure.WebJobs.Host: Timeout value of 00:05:00 was exceeded by function: Functions.ManualTriggerCSharp1.

  When I try to execute this same command on KUDU console or my own PC it only take 1.5 mins and I get a file of the desired duration

  Could anyone please help me with this ? What I might be missing ?