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• PHP script works when called from command line, does not when called as background via web server

  6 juin 2014, par fNek

  I am facing a problem with a certain PHP script (CLI mode) I wrote. It should take certain arguments to convert a video with FFMPEG. When I call it from the command prompt, it works fine. However, I have to call it from a web server.

  The PHP script that handles the request calls the PHP script in the background via code I found here at SE :

  if (substr(php_uname(), 0, 7) == "Windows"){ 
  
      pclose(popen("start /B ". $cmd, "r"));  
  
  } 
  
  else { 
  
      exec("nohup " . $cmd . " > /dev/null &");
  
  }

  When run this way, however, the PHP script does not create the files, even after a much longer time than it took via the command prompt.

  The script runs, I have checked that by letting it insert dummy entries into the database. It also has the permission to create files, which I verified by letting it create a text file.

  What could be the difference that prevents my script from working properly ? I develop and test this code with XAMPP on Windows 7.

  //EDIT : I forgot to give you this link to the background PHP script : http://pastebin.com/pfTZMfwi

  //EDIT2 : I found out that the PHP process runs for a very short time (only until next refresh of the Windows task manager). Could it be that PHP kills its children when it exits ?

  //EDIT3 : No, that seems not to be the problem. I cannot execute programs via exec() when the script is called as background from the web server. What could the problem be, and what would be a solution/workaround ?

  //EDIT4 : The command that seems to cause the trouble is not exec()/etc. but the echo command I did before the exec(). I am going to remove it, but why does it cause a problem ?

• Can I convert jpeg byte array to a RTSP stream to send to my server

  1er mars 2015, par Andrew Simpson

  Is it possible to use FFMPEG - using C# - to convert jpegs to a stream i.e RTSP and then stream that rtsp to my server ?

  The intent is to save the amount of bytes I upload to my server.

  I have looked around but could not find anything about this..

• read rtsp stream in my server

  1er mars 2015, par Andrew Simpson

  using C# and ffmpeg.

  Is it possible to stream from a RTSP on my local network and stream it back to my server and then somehow recieve my rtsp stream on my server using c# ?
  What is the accepted way ?

  I started this off in a DOS Window on my client PC and I installed Fiddler on my server to if it could detect the RTSP coming in. It did not.

  These are my arguments for FFMPEG :

  ffmpeg -i rtsp://my rstp connection -vf mpdecimate -c:v libx264 -preset medium -crf 25 -r 10 pipe rtsp://88.208.237.66

  I have used http as well t my server.

  I just wanted to see if ANYTHING came through to my server...