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• Running FFmpeg in isolated Azure Function not working in Azure

  6 septembre 2023, par Isak Engström

  I'm unable to run ffmpeg in a .Net 7 isolated process Azure Function in Azure. I can run it locally, and I've had success running it in a .Net 6 in-process Azure Function in Azure as well.

  


  Here's an example of how I run the ffmpeg process, without any luck. The process.ExitCode on exit is always '-1073741515'.

  


  internal bool IsFfmpegExecutable(string ffmpegPath)
{
    try
    {
        using var process = new Process();
        var startInfo = new ProcessStartInfo
        {
            FileName = ffmpegPath,
            RedirectStandardOutput = true,
            RedirectStandardError = true,
            UseShellExecute = false,
            CreateNoWindow = true,
            Arguments = "-version"
        };

        process.StartInfo = startInfo;

        process.OutputDataReceived += (_, _) => { };
        process.ErrorDataReceived += (_, _) => { };

        process.Start();
        process.WaitForExit();

        return process.ExitCode == 0;
    }
    catch (Exception)
    {
        return false;
    }
}


  


  The path to the ffmpeg.exe (along with the other ffmpeg dll and exe files) are correct, as I've checked it with File.Exists(). All those files are located in the C :\home\site\wwwroot\ffmpeg\ folder in Azure, as can be seen in Kudu :

  


  Any idea of how I can get it working ?

  


• Open Video Downloader Error : Postprocessing : ffmpeg not found

  11 septembre 2022, par Nick the Community Scientist

  Error Thrown :

  


  ERROR: Postprocessing: ffmpeg not found. Please install or provide the path using --ffmpeg-location


  


  Context : macOS Big Sur M1 Chip, using the open video downloader program GitHub release or Homebrew. This specifically was thrown at the end of downloading the video file and the audio file from a given URL. The two files remained separate as a result of the error, the video was playable normally, but audio was in a .webm format (unusable for most people).

  


  Analysis : It is clear that a dependency is missing, or its path cannot be located. For macOS users like me, the first step after checking the app's preferences for a path set or dependency download function is to check for the given dependency in the system. Once checking using Homebrew, it became clear that several dependencies were missing.

  


• Merging audio and video using ffmpeg in python

  11 juin 2022, par Dairop

  I am trying to merge two files (.mp3 & .mp4) to a single .mp4

  


  The videos and audio are located in the same folder as my main.py, and aren't corrupted

  


  Here is the code that seems to create the error :

  


      if (haveAudio):
        infile1 = ffmpeg.input(title+"_video.mp4")
        infile2 = ffmpeg.input(title+"_audio.mp3")

        merged  = ffmpeg.concat(infile1, infile2, v=1, a=1)
        output  = ffmpeg.output(merged[0], merged[1], title+".mp4")



  


  I am getting an error on the last line :

  


  Traceback (most recent call last):&#xA;  File "C:\Users\...\projectName\main.py", line 67, in <module>&#xA;    output  = ffmpeg.output(merged[0], merged[1], title&#x2B;".mp4")&#xA;  File "C:\Users\...\Python\Python39\lib\site-packages\ffmpeg\nodes.py", line 70, in __getitem__&#xA;    raise TypeError("Expected string index (e.g. &#x27;a&#x27;); got {!r}".format(index))&#xA;TypeError: Expected string index (e.g. &#x27;a&#x27;); got 0&#xA;</module>

  


  My guess would be that an argument is missing when calling ffmpeg.output() but based on the documentation it seems correct.