diff --git a/lib/Alchemy/Phrasea/Exception/Exception.php b/lib/Alchemy/Phrasea/Exception/Exception.php
new file mode 100644
index 0000000000..40f363cadb
--- /dev/null
+++ b/lib/Alchemy/Phrasea/Exception/Exception.php
@@ -0,0 +1,17 @@
+<?php
+
+/*
+ * This file is part of Phraseanet
+ *
+ * (c) 2005-2012 Alchemy
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Alchemy\Phrasea\Exception;
+
+interface Exception
+{
+
+}
diff --git a/lib/Alchemy/Phrasea/Exception/InvalidArgumentException.php b/lib/Alchemy/Phrasea/Exception/InvalidArgumentException.php
new file mode 100644
index 0000000000..3a7fb43b0f
--- /dev/null
+++ b/lib/Alchemy/Phrasea/Exception/InvalidArgumentException.php
@@ -0,0 +1,17 @@
+<?php
+
+/*
+ * This file is part of Phraseanet
+ *
+ * (c) 2005-2012 Alchemy
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Alchemy\Phrasea\Exception;
+
+class InvalidArgumentException extends \InvalidArgumentException implements Exception
+{
+
+}
diff --git a/lib/Alchemy/Phrasea/Exception/RuntimeException.php b/lib/Alchemy/Phrasea/Exception/RuntimeException.php
new file mode 100644
index 0000000000..89f63ece4f
--- /dev/null
+++ b/lib/Alchemy/Phrasea/Exception/RuntimeException.php
@@ -0,0 +1,17 @@
+<?php
+
+/*
+ * This file is part of Phraseanet
+ *
+ * (c) 2005-2012 Alchemy
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Alchemy\Phrasea\Exception;
+
+class RuntimeException extends \RuntimeException implements Exception
+{
+
+}
diff --git a/lib/Alchemy/Phrasea/Media/Subdef/OptionType/Multi.php b/lib/Alchemy/Phrasea/Media/Subdef/OptionType/Multi.php
new file mode 100644
index 0000000000..9902ed482c
--- /dev/null
+++ b/lib/Alchemy/Phrasea/Media/Subdef/OptionType/Multi.php
@@ -0,0 +1,107 @@
+<?php
+
+/*
+ * This file is part of Phraseanet
+ *
+ * (c) 2005-2012 Alchemy
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Alchemy\Phrasea\Media\Subdef\OptionType;
+
+/**
+ * Multi Subdef Option
+ *
+ * @license     http://opensource.org/licenses/gpl-3.0 GPLv3
+ * @link        www.phraseanet.com
+ */
+class Multi implements OptionType
+{
+    protected $name;
+    protected $displayName;
+    protected $defaultValue;
+    protected $available;
+
+    public function __construct($displayName, $name, Array $available, $defaultValue = null)
+    {
+        $this->displayName = $displayName;
+        $this->name = $name;
+        $this->available = array();
+        foreach ($available as $a) {
+            $this->available[$a] = false;
+        }
+        $this->defaultValue = $defaultValue;
+
+        if ($defaultValue) {
+            $this->setValue($defaultValue);
+        }
+    }
+
+    public function setValue($value)
+    {
+        foreach ($this->available as $k => $v) {
+            $this->available[$k] = false;
+        }
+
+        if ( ! $value) {
+
+            return $this;
+        }
+
+        foreach ((array) $value as $v) {
+            if ( ! array_key_exists($v, $this->available)) {
+                throw new \Exception_InvalidArgument(
+                    sprintf(
+                        'The value provided `%s` for %s does not fit in range ; available are %s'
+                        , $value
+                        , $this->getName()
+                        , implode(', ', $this->getAvailableValues())
+                    )
+                );
+            }
+
+            $this->available[$v] = true;
+        }
+
+        return $this;
+    }
+
+    public function getDisplayName()
+    {
+        return $this->displayName;
+    }
+
+    public function getType()
+    {
+        return self::TYPE_MULTI;
+    }
+
+    public function getAvailableValues()
+    {
+        return array_keys($this->available);
+    }
+
+    public function getName()
+    {
+        return $this->name;
+    }
+
+    public function getValue($all = false)
+    {
+        if ($all) {
+            return $this->available;
+        }
+
+        $value = array();
+
+        foreach ($this->available as $a => $selected) {
+            if ($selected) {
+                $value[] = $a;
+            }
+        }
+
+        return $value;
+    }
+}
diff --git a/tests/Alchemy/Phrasea/Media/Subdef/OptionType/MultiTest.php b/tests/Alchemy/Phrasea/Media/Subdef/OptionType/MultiTest.php
new file mode 100644
index 0000000000..334cb846e0
--- /dev/null
+++ b/tests/Alchemy/Phrasea/Media/Subdef/OptionType/MultiTest.php
@@ -0,0 +1,69 @@
+<?php
+
+namespace Alchemy\Phrasea\Media\Subdef\OptionType;
+
+class MultiTest extends \PHPUnit_Framework_TestCase
+{
+    /**
+     * @var Multi
+     */
+    protected $object;
+
+    protected function setUp()
+    {
+        $this->object = new Multi('MUMU', 'multiateur', array('un', 'dos', 'tres'), 'dos');
+    }
+
+    /**
+     * @covers Alchemy\Phrasea\Media\Subdef\OptionType\Multi::setValue
+     */
+    public function testSetValue()
+    {
+        $this->assertEquals(array('dos'), $this->object->getValue());
+        $this->object->setValue('tres');
+        $this->assertEquals(array('tres'), $this->object->getValue());
+        $this->object->setValue('');
+        $this->assertEquals(array(), $this->object->getValue());
+    }
+
+    /**
+     * @covers Alchemy\Phrasea\Media\Subdef\OptionType\Multi::setValue
+     * @expectedException \Exception_InvalidArgument
+     */
+    public function testSetWrongValue()
+    {
+        $this->object->setValue('deux');
+    }
+
+    /**
+     * @covers Alchemy\Phrasea\Media\Subdef\OptionType\Multi::getType
+     */
+    public function testGetType()
+    {
+        $this->assertEquals(OptionType::TYPE_MULTI, $this->object->getType());
+    }
+
+    /**
+     * @covers Alchemy\Phrasea\Media\Subdef\OptionType\Multi::getAvailableValues
+     */
+    public function testGetAvailableValues()
+    {
+        $this->assertEquals(array('un', 'dos', 'tres'), $this->object->getAvailableValues());
+    }
+
+    /**
+     * @covers Alchemy\Phrasea\Media\Subdef\OptionType\Multi::getName
+     */
+    public function testGetName()
+    {
+        $this->assertEquals('multiateur', $this->object->getName());
+    }
+
+    /**
+     * @covers Alchemy\Phrasea\Media\Subdef\OptionType\Multi::getDisplayName
+     */
+    public function testGetDisplayName()
+    {
+        $this->assertEquals('MUMU', $this->object->getDisplayName());
+    }
+}
diff --git a/tests/media/media_subdefTest.php b/tests/media/media_subdefTest.php
new file mode 100644
index 0000000000..5daa19974c
--- /dev/null
+++ b/tests/media/media_subdefTest.php
@@ -0,0 +1,273 @@
+<?php
+
+require_once __DIR__ . '/../PhraseanetPHPUnitAbstract.class.inc';
+
+class media_subdefTest extends \PhraseanetPHPUnitAbstract
+{
+    /**
+     * @var \media_subdef
+     */
+    protected static $objectPresent;
+    /**
+     * @var \media_subdef
+     */
+    protected static $objectNotPresent;
+    /**
+     * @var \record_adapter
+     */
+    protected static $recordonbleu;
+
+    /**
+     * @covers media_subdef::__construct
+     * @covers media_subdef::create
+     */
+    public static function setUpBeforeClass()
+    {
+        parent::setUpBeforeClass();
+
+        self::$recordonbleu = record_adapter::create(self::$collection, new system_file(__DIR__ . "/../testfiles/iphone_pic.jpg"));
+        self::$recordonbleu->generate_subdefs(self::$recordonbleu->get_databox());
+
+        foreach (self::$recordonbleu->get_subdefs() as $subdef) {
+
+            if ($subdef->get_name() == 'document') {
+                continue;
+            }
+
+            if ( ! self::$objectPresent) {
+                self::$objectPresent = $subdef;
+                continue;
+            }
+            if ( ! self::$objectNotPresent) {
+                self::$objectNotPresent = $subdef;
+                continue;
+            }
+        }
+
+        self::$objectNotPresent->remove_file();
+    }
+
+    /**
+     * @covers media_subdef::is_physically_present
+     */
+    public function testIs_physically_present()
+    {
+        $this->assertTrue(self::$objectPresent->is_physically_present());
+        $this->assertFalse(self::$objectNotPresent->is_physically_present());
+    }
+
+    /**
+     * @covers media_subdef::get_record
+     */
+    public function testGet_record()
+    {
+        $this->assertEquals(self::$recordonbleu->get_record_id(), self::$objectNotPresent->get_record()->get_record_id());
+        $this->assertEquals(self::$recordonbleu->get_record_id(), self::$objectPresent->get_record()->get_record_id());
+        $this->assertEquals(self::$recordonbleu->get_sbas_id(), self::$objectNotPresent->get_record()->get_sbas_id());
+        $this->assertEquals(self::$recordonbleu->get_sbas_id(), self::$objectPresent->get_record()->get_sbas_id());
+}
+
+    /**
+     * @covers media_subdef::get_permalink
+     */
+    public function testGet_permalink()
+    {
+        $this->assertInstanceOf('\\media_Permalink_adapter', self::$objectNotPresent->get_permalink());
+        $this->assertInstanceOf('\\media_Permalink_adapter', self::$objectPresent->get_permalink());
+    }
+
+    /**
+     * @covers media_subdef::get_record_id
+     */
+    public function testGet_record_id()
+    {
+        $this->assertEquals(self::$recordonbleu->get_record_id(), self::$objectNotPresent->get_record()->get_record_id());
+        $this->assertEquals(self::$recordonbleu->get_record_id(), self::$objectPresent->get_record()->get_record_id());
+    }
+
+    /**
+     * @covers media_subdef::getEtag
+     */
+    public function testGetEtag()
+    {
+        $this->assertNull(self::$objectNotPresent->getEtag());
+        $this->assertInternalType('string', self::$objectPresent->getEtag());
+        $this->assertRegExp('/[a-zA-Z0-9]{32}/', self::$objectPresent->getEtag());
+    }
+
+    /**
+     * @covers media_subdef::setEtag
+     */
+    public function testSetEtag()
+    {
+        $etag = md5('random');
+        self::$objectNotPresent->setEtag($etag);
+        $this->assertEquals($etag, self::$objectNotPresent->getEtag());
+    }
+
+    /**
+     * @covers media_subdef::get_sbas_id
+     */
+    public function testGet_sbas_id()
+    {
+        $this->assertEquals(self::$recordonbleu->get_sbas_id(), self::$objectNotPresent->get_record()->get_sbas_id());
+        $this->assertEquals(self::$recordonbleu->get_sbas_id(), self::$objectPresent->get_record()->get_sbas_id());
+    }
+
+    /**
+     * @covers media_subdef::get_type
+     */
+    public function testGet_type()
+    {
+        $this->assertEquals(\media_subdef::TYPE_IMAGE, self::$objectPresent->get_type());
+    }
+
+    /**
+     * @covers media_subdef::get_mime
+     */
+    public function testGet_mime()
+    {
+        $this->assertEquals('image/jpeg', self::$objectPresent->get_mime());
+        $this->assertEquals('image/png', self::$objectNotPresent->get_mime());
+    }
+
+    /**
+     * @covers media_subdef::get_path
+     */
+    public function testGet_path()
+    {
+        $this->assertEquals(dirname(self::$objectPresent->get_pathfile()) . DIRECTORY_SEPARATOR, self::$objectPresent->get_path());
+        $this->assertEquals(dirname(self::$objectNotPresent->get_pathfile()) . DIRECTORY_SEPARATOR, self::$objectNotPresent->get_path());
+    }
+
+    /**
+     * @covers media_subdef::get_baseurl
+     */
+    public function testGet_baseurl()
+    {
+        $this->assertInternalType('string', self::$objectPresent->get_baseurl());
+        $this->assertInternalType('string', self::$objectNotPresent->get_baseurl());
+    }
+
+    /**
+     * @covers media_subdef::get_file
+     */
+    public function testGet_file()
+    {
+        $this->assertEquals(basename(self::$objectPresent->get_pathfile()), self::$objectPresent->get_file());
+        $this->assertEquals(basename(self::$objectNotPresent->get_pathfile()), self::$objectNotPresent->get_file());
+    }
+
+    /**
+     * @covers media_subdef::get_size
+     */
+    public function testGet_size()
+    {
+        $this->assertTrue(self::$objectPresent->get_size() > 0);
+        $this->assertTrue(self::$objectNotPresent->get_size() > 0);
+    }
+
+    /**
+     * @covers media_subdef::get_name
+     */
+    public function testGet_name()
+    {
+        $this->assertTrue(in_array(self::$objectPresent->get_name(), array('thumbnail', 'preview')));
+        $this->assertTrue(in_array(self::$objectNotPresent->get_name(), array('thumbnail', 'preview')));
+    }
+
+    /**
+     * @covers media_subdef::get_subdef_id
+     */
+    public function testGet_subdef_id()
+    {
+        $this->assertInternalType('int', self::$objectPresent->get_subdef_id());
+        $this->assertInternalType('int', self::$objectNotPresent->get_subdef_id());
+        $this->assertTrue(self::$objectPresent->get_size() > 0);
+        $this->assertTrue(self::$objectNotPresent->get_size() > 0);
+    }
+
+    /**
+     * @covers media_subdef::is_substituted
+     */
+    public function testIs_substituted()
+    {
+        $this->assertFalse(self::$objectPresent->is_substituted());
+        $this->assertTrue(self::$objectNotPresent->is_substituted());
+    }
+
+    /**
+     * @covers media_subdef::get_pathfile
+     */
+    public function testGet_pathfile()
+    {
+        $this->assertEquals(self::$objectPresent->get_path() . self::$objectPresent->get_file(), self::$objectPresent->get_pathfile());
+        $this->assertEquals(self::$objectNotPresent->get_path() . self::$objectNotPresent->get_file(), self::$objectNotPresent->get_pathfile());
+        $this->assertTrue(file_exists(self::$objectPresent->get_pathfile()));
+        $this->assertTrue(file_exists(self::$objectNotPresent->get_pathfile()));
+        $this->assertTrue(is_readable(self::$objectPresent->get_pathfile()));
+        $this->assertTrue(is_readable(self::$objectNotPresent->get_pathfile()));
+        $this->assertTrue(is_writable(self::$objectPresent->get_pathfile()));
+        $this->assertTrue(is_writable(self::$objectNotPresent->get_pathfile()));
+    }
+
+    /**
+     * @covers media_subdef::get_modification_date
+     */
+    public function testGet_modification_date()
+    {
+        $this->assertInstanceOf('\\DateTime', self::$objectPresent->get_modification_date());
+        $this->assertInstanceOf('\\DateTime', self::$objectNotPresent->get_modification_date());
+    }
+
+    /**
+     * @covers media_subdef::get_creation_date
+     */
+    public function testGet_creation_date()
+    {
+        $this->assertInstanceOf('\\DateTime', self::$objectPresent->get_creation_date());
+        $this->assertInstanceOf('\\DateTime', self::$objectNotPresent->get_creation_date());
+    }
+
+    /**
+     * @covers media_subdef::renew_url
+     */
+    public function testRenew_url()
+    {
+        $this->assertInternalType('string', self::$objectPresent->renew_url());
+        $this->assertInternalType('string', self::$objectNotPresent->renew_url());
+    }
+
+    /**
+     * @covers media_subdef::getDataboxSubdef
+     */
+    public function testGetDataboxSubdef()
+    {
+        $this->assertInstanceOf('\\databox_subdef', self::$objectPresent->getDataboxSubdef());
+        $this->assertInstanceOf('\\databox_subdef', self::$objectNotPresent->getDataboxSubdef());
+    }
+
+    /**
+     * @covers media_subdef::rotate
+     */
+    public function testRotate()
+    {
+        $width_before = self::$objectPresent->get_width();
+        $height_before = self::$objectPresent->get_height();
+
+        self::$objectPresent->rotate(90);
+
+        $this->assertEquals($width_before, self::$objectPresent->get_height());
+        $this->assertEquals($height_before, self::$objectPresent->get_width());
+    }
+
+    /**
+     * @covers media_subdef::rotate
+     * @expectedException \Alchemy\Phrasea\Exception\RuntimeException
+     * @covers \Alchemy\Phrasea\Exception\RuntimeException
+     */
+    public function testRotateOnSubstitution()
+    {
+        self::$objectNotPresent->rotate(90);
+    }
+}