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• Converting bin&amp format to mp4 with ffmpeg fails

  31 octobre 2017, par Vincent

  I am trying to download videos from Wistia and I managed to download them but in .bin&amp format ; I’d like to convert them to .mp4 in order to use OpenCV. For this I am calling ffmpeg with subprocess on Python but I get 1 as the value for the return code, meaning the process has failed. Any idea why, and how I can change this...?

  Code is the following :

  import subprocess
  
  
  
  infile = filename #a bin&amp file
  
  outfile = filename[:-7]+'mp4'
  
  
  
  subprocess.run(['ffmpeg', '-i', infile, outfile],shell=True)

  I get :

  CompletedProcess(args=['ffmpeg', '-i', '58c63bccfcc1c150646c261caad97a58ced4b5e3.bin&amp', '58c63bccfcc1c150646c261caad97a58ced4b5e3.mp4'], returncode=1)

  Also, it works in the command prompt...

  Thank you for your help,

  Sincerely,

• Python subprocess : Know when a command has finished

  29 juin 2016, par xaccrocheur

  I need a way to know when ffmpeg has finished its work. Here is my code :

  def on_button_clicked(self, button, progress_bar, filename):
  
    self.execute(progress_bar, filename)
  
    progress_bar.set_text('Encoding')
  
    progress_bar.pulse()
  
  
  
  def execute(self, progress_bar, filename):
  
  
  
    cmd = ['ffmpeg', '-y',
  
           '-i', filename,
  
           '-r', '30',
  
           '/tmp/test-encode.mkv']
  
  
  
    process = sp.Popen(cmd, stdin=open(os.devnull))
  
  
  
    progress_bar.set_text('Done')

  The ’Done’ never shows up. The job is done, though. I can see in the shell window that ffmpeg is done. How can I get the signal ?

• Shall_exec() is not working in Cent OS 6.5 with php 5.5

  5 décembre 2014, par hitesh

  It is the follow up from the question here. I was not sure if it was good idea to edit that question, So I am asking a new question here

  As explained in my previous question I am using ffmpeg for getting screenshot from video.it seems to working fine in my local but in my Cent OS 6.5 server it is not working, it throws error that
  ffmpeg extension is not enabled.

  "Error in Loading ffmpeg"

  To debug this, I commented the line

    extension_loaded('ffmpeg') or die('Error in loading ffmpeg');

  and I found out that in Cent OS terminal, ffmpeg command were working but if I use it with full path as I am doing in windows it did not work.So i deleted full path and used ffmpeg alone, I am not sure what was the reason behind this.

  Here is my new command

    $cmd = "ffmpeg -i $vid -an -ss $getfromsecond -s $size -vframes 1 $imageFile";
  
      $cmd2 = "ffmpeg -i $remoteVideo -an -ss $getfromsecond -s $size -vframes 1 $imageFile2 ";
  
      echo $cmd ."<br />";
  
      echo $cmd2."<br />";
  
  exec($cmd, $output, $return);
  
  echo '$output :' ; print_r($output); echo "<br />";echo '$return' . $return . "<br />";
  
  
  
  if ($return != 0) {
  
      // an error occurred
  
      echo "Error in EXEC command ";
  
  }
  
  
  
  if(!shell_exec($cmd2)){
  
      echo "Remote video Thumbnail created". "<br />";
  
  }else{
  
      echo "Error Creating Remote video thumbnail". "<br />";
  
  }

  now again it was not working in server, but when I tried both command

   `     echo $cmd ."<br />";
  
  
  
          echo $cmd2."<br />";` 

  in dev terminal, it got executed successfully I could see the screenshot.

  So while searching for the problem, I found this question here based on this answer here. I understood that some server may not allow it so I checked it.

   if (isEnabled('shell_exec')) {
  
      echo "Shell_exec is enabled "."<br />";
  
      shell_exec('echo "hello world"');
  
      echo "<br />";
  
  }else{
  
  
  
      echo "shell exec command is not allowed";
  
  }

  I got the output "Shell_exec is enabled " but shell_exec('echo "hello world"'); does not seems to work, Also when I run the command directly in terminal it works.

  Help me find the issue here, is it issue with shall_exec() or something else ?

  Any help is appreciated. Thanks