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• FFmpeg - PHP Error Code 127

  25 avril 2013, par Kit

  I am trying to execute FFmpeg from php. I have installed FFmpeg-php, and the extension is in the modules directory and it shows up in phpinfo. FFmpeg is working fine as I can run the command in a terminal and it outputs the video. However, when I try and run the command from php using the following script :

  exec(ffmpeg -i input.avi output.avi);

  But I get a '127' error code.

  The extension is loaded in using :

  $extension      = "ffmpeg";
  
  $extension_soname   = $extension . "." . PHP_SHLIB_SUFFIX;
  
  $extension_fullname = PHP_EXTENSION_DIR . "/" . $extension_soname;
  
  
  
  // Locate Extension
  
  define('FFMPEG_LIBRARY', '/usr/local/bin/ffmpeg');
  
  
  
  // Load Extension
  
  if (!extension_loaded($extension))
  
      echo dl($extension_soname) or die("Can't load extension $extension_fullname\n");

  I have also tried defining the aboslute extension location in the command :

  exec(/usr/local/bin/ffmpeg-i input.avi output.avi);

  Again, this works in the terminal but still returns the same erro code using the php exec().

  Has anyone got any ideas ?

  Thank you.

• FFMpeg giving invalid argument error with python subprocess

  23 janvier 2020, par Emre Erol

  I am trying to convert a file or microphone stream to 22050 sample rate and change tempo to double. I can do it using terminal with below code ;

  #ffmpeg -i test.mp3 -af asetrate=44100*0.5,aresample=44100,atempo=2 output.mp3 

  But i can not run this terminal code with python subprocess. I try many things but every time fail. Generaly i am taking Requested output format ’asetrate’ or ’aresample’ or ’atempo’ is not suitable output format errors. Invalid argument. How can i run it and take a stream with pipe ?

  song = subprocess.Popen(["ffmpeg.exe", "-i", sys.argv[1], "-f", "asetrate", "22050", "wav", "pipe:1"],
  
                          stdout=subprocess.PIPE)

• How can I run an ffmpeg command in a python script ?

  24 juin 2022, par Nexion21

  I want to overlay a transparent video over top of an image using ffmpeg and python

  


  I am able to do this successfully through terminal, but I cannot get ffmpeg commands to work in python. The following command produces the result that I want in terminal when I am in the directory with the files there.

  


  ffmpeg -i head1.png -i hdmiSpitting.mov -filter_complex "[0:v][1:v] overlay=0:0" -pix_fmt yuv420p -:a copy output3.mov


  


  In python, my code is simple :

  


  import os
import subprocess
command = "ffmpeg -i head1.png -i hdmiSpitting.mov -filter_complex \"[0:v][1:v] overlay=0:0\" -pix_fmt yuv420p -c:a copy output3.mov"
subprocess.call(command,shell=True)


  


  The code runs, there is no indication of an error, but no output is produced.

  


  What am I missing here ?