diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3cabf96..512d779 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,10 @@ CHANGELOG
 
 * 0.4.0 (xx-xx-xxxx)
 
+* 0.3.5 (xx-xx-2013)
+
+  * Add vorbis audio format (@jacobbudin).
+
 * 0.3.4 (05-09-2013)
 
   * Fix Invalid ratio computing.
diff --git a/README.md b/README.md
index 6ace127..9ef5e31 100644
--- a/README.md
+++ b/README.md
@@ -6,6 +6,14 @@ An Object Oriented library to convert video/audio files with FFmpeg / AVConv.
 
 Check another amazing repo : [PHP FFMpeg extras](https://github.com/alchemy-fr/PHP-FFMpeg-Extras), you will find lots of Audio/Video formats there.
 
+## Your attention please
+
+This library requires a working FFMpeg install. You will need both FFMpeg and FFProbe binaries to use it.
+Be sure that these binaries can be located with system PATH to get the benefit of the binary detection, 
+otherwise you should have to explicitely give the binaries path on load.
+
+For Windows users : Please find the binaries at http://ffmpeg.zeranoe.com/builds/.
+
 ## Installation
 
 The recommended way to install PHP-FFMpeg is through [Composer](https://getcomposer.org).
diff --git a/src/FFMpeg/Format/Audio/Vorbis.php b/src/FFMpeg/Format/Audio/Vorbis.php
new file mode 100644
index 0000000..fd241fd
--- /dev/null
+++ b/src/FFMpeg/Format/Audio/Vorbis.php
@@ -0,0 +1,39 @@
+<?php
+
+/*
+ * This file is part of PHP-FFmpeg.
+ *
+ * (c) Alchemy <info@alchemy.fr>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace FFMpeg\Format\Audio;
+
+/**
+ * The Vorbis audio format
+ */
+class Vorbis extends DefaultAudio
+{
+    public function __construct()
+    {
+        $this->audioCodec = 'vorbis';
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getExtraParams()
+    {
+        return array('-strict', '-2');
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function getAvailableAudioCodecs()
+    {
+        return array('vorbis');
+    }
+}
diff --git a/tests/FFMpeg/Tests/Format/Audio/VorbisTest.php b/tests/FFMpeg/Tests/Format/Audio/VorbisTest.php
new file mode 100644
index 0000000..7aba0b7
--- /dev/null
+++ b/tests/FFMpeg/Tests/Format/Audio/VorbisTest.php
@@ -0,0 +1,13 @@
+<?php
+
+namespace FFMpeg\Tests\Format\Audio;
+
+use FFMpeg\Format\Audio\Vorbis;
+
+class VorbisTest extends AudioTestCase
+{
+    public function getFormat()
+    {
+        return new Vorbis();
+    }
+}