Creation of a setPasses method for the X264 format.

src/FFMpeg/Format/Video/X264.php

@@ -19,6 +19,9 @@ class X264 extends DefaultVideo
     /** @var boolean */
     private $bframesSupport = true;
 
+    /** @var integer */
+    private $passes = 2;
+
     public function __construct($audioCodec = 'libfaac', $videoCodec = 'libx264')
     {
         $this
@@ -62,12 +65,23 @@ class X264 extends DefaultVideo
         return array('libx264');
     }
 
+    /**
+     * @param $passes
+     *
+     * @return X264
+     */
+    public function setPasses($passes)
+    {
+        $this->passes = $passes;
+        return $this;
+    }
+
     /**
      * {@inheritDoc}
      */
     public function getPasses()
     {
-        return 2;
+        return $this->passes;
     }
 
     /**