Recherche avancée

Sur d’autres sites (4413)

• 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.

• Javascript sync images

  26 septembre 2021, par Ruan Matt

  I'm studying about FPS, animations, image processing in order to get into the game development world.

  


  I took a video and extract each frame into a .jpg image, and I want to run these images, side by side, in the same sync as the original video

  


  You can test at this link => https://jsfiddle.net/ruanmatt144/267erymL/2/

  


  The problem : The video FPS is 30, but even if I put 1000/30, or any other value that refers to the original FPS, it doesn't work ! It doesn't stay in sync. setTimeout has a limit on decimal places that I don't know about ?

  


  Video timestamp for each frame => https://unity-animation.ztech.gq/timestamp.txt

  


  How can I sync those images following the original video timestamp ? Thank you.

  


  var arr = Array();
var v = 0;
var v2 = 0;
var k = 0;

(function getImages(i) {
  setTimeout(function() {
    v++;
    var r = Math.random();
        loadImage("https://unity-animation.ztech.gq/frames/out-" + v + ".jpg?v=" + r);
        arr.push("https://unity-animation.ztech.gq/frames/out-" + v + ".jpg?v=" + r);

        if (--i) getImages(i);
  }, 30)
})(20000);



const loadImage = src =>
    new Promise((resolve, reject) => {
        const img = new Image();
        img.onload = () => resolve(img);
        img.src = src;
    })  
;

var imgArray = new Array();
setTimeout(function() {
    (function runVideo(i) {
        setTimeout(function() {
            v2++;
            imgArray[v2] = new Image();
            document.getElementById('load').appendChild(imgArray[v2]);

            imgArray[v2].src = arr[v2];
            imgArray[v2].classList.add("overlayImage");
            imgArray.shift();
            var parent = document.querySelector("#load");
            [...parent.children].slice(0,-10).forEach(parent.removeChild.bind(parent));
            var last = document.querySelector('#load img:last-child').getAttribute("src");
            var _final = last.substring(
                last.indexOf("-") + 1, 
                last.lastIndexOf(".jpg")
            );
            arr.shift();
        if (--i) runVideo(i);
      }, 90) // <== the problem is here, which value I must use?
    })(38194);
    document.getElementById("video").play();
}, 20000);


  


• Controlling concurrent process usage for ffmpeg

  20 octobre 2016, par Ugur KAYA

  I need to make a load test on my linux machine for ffmpeg tool.

  It runs SuSE 11 Enterprise edition, and 12 cores of cpu.

  What I need to do is that, I need to run 6 instances of ffmpeg simultaneously, each is running on seperate core of cpu.

  How can I achieve this ?

  PS : I need to use bash script.

  Thanks in advance.