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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 ?

  


• Calling FFMPEG Commands via Windows Service

  2 février 2017, par Kubi

  I have a windows service and I checked the "Allow service to interact with desktop" checkbox in LogOn tab. However, I still can not call my batch file which is a basic command app to run the ffmpeg commands to transcode some videos in my application. (I’m sending arguments as well)

  I checked the logs in Process Monitor but everything seems fine when I filter it with MyServiceName.exe. All threads are looking fine but the service can not even start the command file.

  If I can not find a solution for this, I’m going to create another service and communicate with each other about the transcoding process, But I’m looking for a way to find the exact problem here.

          BinaryPath = @"c:\Transcoder\ServiceConsole.exe";
  
          //create a process info
  
          ProcessStartInfo oInfo = new ProcessStartInfo(BinaryPath, " /readfromfile command.txt");
  
          oInfo.UseShellExecute = false;
  
          oInfo.CreateNoWindow = true;
  
          oInfo.RedirectStandardOutput = true;
  
          oInfo.RedirectStandardError = true;
  
          string output = null; StreamReader srOutput = null;
  
  
  
          try
  
          {
  
              Process proc = System.Diagnostics.Process.Start(oInfo); 
  
  
  
              proc.WaitForExit();
  
  
  
              //get the output
  
              srOutput = proc.StandardError;
  
  
  
              //now put it in a string
  
              output = srOutput.ReadToEnd();
  
  
  
              proc.Close();
  
          }

• How to pipe in and pipe out of ffmpeg in python ? [closed]

  22 mai 2024, par sa_penguin

  I want to use ffmpeg as a middleman to perform a functionality. The camera frames will be read through opencv and passed to ffmpeg for processing. FFMPEG need to pass the processed frames to opencv for displaying. Below is what I tried. The code hangs and is not displaying anything. Any help will be appreciated.

  


  import cv2
import math
import subprocess as sp

import ffmpeg
import numpy as np


def main():
    cap = cv2.VideoCapture(0)
    if not cap.isOpened():
        print("Camera can't open\nexit")
        return -1
    width = 640
    height = 480
    fps = 30

out = process = (
        ffmpeg
        .input('pipe:', vsync=0, hwaccel='cuda', hwaccel_output_format='cuda', format='rawvideo', pix_fmt='bgr24', s=f'{width}x{height}', r=f'{fps}')
        .filter('setsar', sar=1)  # Keep the aspect ratio
        .output('pipe:', format='rawvideo', pix_fmt='bgr24')
        .run_async(pipe_stdin=True, pipe_stdout=True)
)

while True:
    success, frame = cap.read()
    img = cv2.cvtColor(frame, cv2.COLOR_BayerBG2BGR)
    process.stdin.write(img.tobytes())

    arr = np.frombuffer(process.stdout.read(width*height*3), dtype=np.uint8)
    cv2.imshow("webcam",arr))
    cv2.waitKey(0)


if __name__ == "__main__":
    main()