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diff --git a/libraries/phpvideotoolkit/adapters/ffmpeg-php/php-reader/src/ASF/Object/StreamPrioritization.php b/libraries/phpvideotoolkit/adapters/ffmpeg-php/php-reader/src/ASF/Object/StreamPrioritization.php
new file mode 100644
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+++ b/libraries/phpvideotoolkit/adapters/ffmpeg-php/php-reader/src/ASF/Object/StreamPrioritization.php
@@ -0,0 +1,99 @@
+<?php
+/**
+ * PHP Reader Library
+ *
+ * Copyright (c) 2008 The PHP Reader Project Workgroup. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ *  - Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ *  - Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *  - Neither the name of the project workgroup nor the names of its
+ *    contributors may be used to endorse or promote products derived from this
+ *    software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ * @package    php-reader
+ * @subpackage ASF
+ * @copyright  Copyright (c) 2008 The PHP Reader Project Workgroup
+ * @license    http://code.google.com/p/php-reader/wiki/License New BSD License
+ * @version    $Id: StreamPrioritization.php 108 2008-09-05 17:00:05Z svollbehr $
+ */
+
+/**#@+ @ignore */
+require_once("ASF/Object.php");
+/**#@-*/
+
+/**
+ * The <i>Stream Prioritization Object</i> indicates the author's intentions as
+ * to which streams should or should not be dropped in response to varying
+ * network congestion situations. There may be special cases where this
+ * preferential order may be ignored (for example, the user hits the "mute"
+ * button). Generally it is expected that implementations will try to honor the
+ * author's preference.
+ * 
+ * The priority of each stream is indicated by how early in the list that
+ * stream's stream number is listed (in other words, the list is ordered in
+ * terms of decreasing priority).
+ * 
+ * The Mandatory flag field shall be set if the author wants that stream kept
+ * "regardless". If this flag is not set, then that indicates that the stream
+ * should be dropped in response to network congestion situations. Non-mandatory
+ * streams must never be assigned a higher priority than mandatory streams.
+ * 
+ * @package    php-reader
+ * @subpackage ASF
+ * @author     Sven Vollbehr <svollbehr@gmail.com>
+ * @copyright  Copyright (c) 2008 The PHP Reader Project Workgroup
+ * @license    http://code.google.com/p/php-reader/wiki/License New BSD License
+ * @version    $Rev: 108 $
+ */
+final class ASF_Object_StreamPrioritization extends ASF_Object
+{
+  /** @var Array */
+  private $_priorityRecords = array();
+  
+  /**
+   * Constructs the class with given parameters and reads object related data
+   * from the ASF file.
+   *
+   * @param Reader $reader  The reader object.
+   * @param Array  $options The options array.
+   */
+  public function __construct($reader, &$options = array())
+  {
+    parent::__construct($reader, $options);
+    $priorityRecordCount = $this->_reader->readUInt16LE();
+    for ($i = 0; $i < $priorityRecordCount; $i++)
+      $this->_priorityRecords[] = array
+        ("streamNumber" => $this->_reader->readUInt16LE(),
+         "flags"        => $this->_reader->readUInt16LE());
+  }
+  
+  /**
+   * Returns an array of records. Each record consists of the following keys.
+   * 
+   *   o streamNumber -- Specifies the stream number. Valid values are between
+   *     1 and 127.
+   *
+   *   o flags -- Specifies the flags. The mandatory flag is the bit 1 (LSB).
+   * 
+   * @return Array
+   */
+  public function getPriorityRecords() { return $this->_priorityRecords; }
+}