Recherche avancée

Sur d’autres sites (4337)

• How to install FFMpeg in WampServer 2.0 (Windows XP) [closed]

  16 décembre 2012, par Richard Knop

  I need to install the ffmpeg PHP extension on my localhost so I can test few of my scripts but I am having troubles figuring out how to do that.

  I have WampServer 2.0 with PHP 5.2.9-2, my OS is Windows XP. Please somebody give me step by step instructions.

  I have found some Windows builds here : http://sourceforge.net/projects/ffmpeg-php/files/

  But I don't know which one to download and what to do with files.

  EDITED :

  What I have done so far :

  1. Download ffmpeg_new
  2. Copy php_ffmpeg.dll from the php5 folder to the C :\wamp\bin\php\php5.2.9-2\ext
  3. Copy files from common to the windows/system32 folder
  4. Add extension=php_ffmpeg.dll to php.ini file
  5. Restarted all services (Apache, PHP...)

  I am gettings an error after using this code :

              $extension = 'ffmpeg';
  
              $extension_soname = 'php_ffmpeg.dll';
  
              $extension_fullname = PHP_EXTENSION_DIR . "/" . $extension_soname;
  
  
  
              // load extension
  
              if(false === extension_loaded($extension)) {
  
                  if (false === dl($extension_soname))
  
                      throw new Exception("Can't load extension $extension_fullname\n");
  
              }

  The error :

  Warning: dl() [function.dl]: Not supported in multithreaded Web servers - use extension=ffmpeg.dll in your php.ini in C:\wamp\www\hunnyhive\application\modules\default\controllers\MyAccountController.php on line 314

  Plus I also get the exception from above.

• grabbing image frame from RTSP

  22 mars 2013, par Christopher Haag

  I have read many posts on this topic, but have yet to find a solution that works.

  I have tried VLC as well as FFMPEG to capture a frame every 10 seconds from an RTSP stream my surveillance system produces. I receive UDP timeout, trying TCP errors with FFMPEG, this is the closest I have got it to working.

  I am looking for a command which I can throw into a windows batch file which will initiate the stream, and begin dumping a file of the same name into a directory (the image must overwrite itself every 10 seconds). Any help will be very much appreciated ! Thanks !

• Using FFMpeg with Runtime.exec() to do a simple transcoding

  1er novembre 2011, par Adam Ingmansson

  I know there are many questions touching this subject, but none have helped me solve my issue.

  Purpose :

  Transcoding a video taken,from a queue, from .mov to h.264 (for now only that)

  Solution :

  Building a java application that gets the next in the queue, transcodes it then repeat

  Problem :

  Running ffmpeg using Runtime.exec() is not working.
  Im using the StreamGobbler from this tutorial to capturing the output from the process.

  This code shows how i start my process :

  String[] command = new String[]{"./ffmpeg/ffmpeg","-i",videoFile.getPath(),"-vcodec","libx264","-fpre",preset,folder + recID + ".flv"};
  
  System.out.println("Running command..");
  
  Process p = r.exec(command);
  
  
  
   // any error message?
  
  StreamGobbler errorGobbler = new 
  
  StreamGobbler(p.getErrorStream(), "ERROR");            
  
  
  
  // any output?
  
  StreamGobbler outputGobbler = new 
  
  StreamGobbler(p.getInputStream(), "OUT");
  
  
  
  // kick them off
  
  errorGobbler.start();
  
  outputGobbler.start();
  
  
  
  //logProcessOutputAndErrors(p);
  
  
  
  int res = p.waitFor();
  
  if (res != 0) {
  
      throw new Exception("Encoding error: "+String.valueOf(res));
  
  }

  and this is the current modified version of StreamGobbler (the important part)

  InputStreamReader isr = new InputStreamReader(is);
  
  BufferedReader br = new BufferedReader(isr);
  
  String line=null;
  
  int c = 0;
  
  StringBuilder str = new StringBuilder();
  
  
  
  while (true) {
  
      c = br.read();
  
  }

  Sometimes ffmpeg just stalls, maybe waiting for my input (although there is no indication on screen).

  Sometimes it just ends.

  Sometimes (when I added the line "System.out.print((char) c) ;" in the while-loop above) i got loads of "¿¿ï" repeated over and over again, wich might be the actual encoding of the video wich I managed to capture instead of to a file.

  For those who wonders why i dont just go with a commandline or maybe even php :

  The purpose is an application that will run 24/7 transcoding anything and everything from a queue. The files are pretty large to begin with and takes about 15 min to transcode.