diff --git a/classes/PlaylistArchiveStream.php b/classes/PlaylistArchiveStream.php
index a4a75e0..d25a736 100644
--- a/classes/PlaylistArchiveStream.php
+++ b/classes/PlaylistArchiveStream.php
@@ -63,7 +63,7 @@ class PlaylistArchiveStream extends TarArchive implements StreamInterface
     /**
      * PlaylistArchiveStream constructor.
      *
-     * @param Config $config Config instance.
+     * @param Config   $config Config instance.
      * @param stdClass $video  Video object returned by youtube-dl
      * @param string   $format Requested format
      */
@@ -120,13 +120,12 @@ class PlaylistArchiveStream extends TarArchive implements StreamInterface
      */
     public function getSize()
     {
-        return null;
     }
 
     /**
      * Returns whether or not the stream is seekable.
      *
-     * @return boolean
+     * @return bool
      */
     public function isSeekable()
     {
@@ -146,7 +145,7 @@ class PlaylistArchiveStream extends TarArchive implements StreamInterface
     /**
      * Returns whether or not the stream is writable.
      *
-     * @return boolean
+     * @return bool
      */
     public function isWritable()
     {
@@ -156,7 +155,7 @@ class PlaylistArchiveStream extends TarArchive implements StreamInterface
     /**
      * Returns whether or not the stream is readable.
      *
-     * @return boolean
+     * @return bool
      */
     public function isReadable()
     {
@@ -176,13 +175,12 @@ class PlaylistArchiveStream extends TarArchive implements StreamInterface
     /**
      * Get stream metadata as an associative array or retrieve a specific key.
      *
-     * @param  string $key string $key Specific metadata to retrieve.
+     * @param string $key string $key Specific metadata to retrieve.
      *
      * @return null
      */
     public function getMetadata($key = null)
     {
-        return null;
     }
 
     /**
@@ -194,6 +192,7 @@ class PlaylistArchiveStream extends TarArchive implements StreamInterface
     {
         $stream = $this->buffer;
         $this->close();
+
         return $stream;
     }
 
@@ -214,7 +213,7 @@ class PlaylistArchiveStream extends TarArchive implements StreamInterface
     }
 
     /**
-     * Returns the current position of the file read/write pointer
+     * Returns the current position of the file read/write pointer.
      *
      * @return int|false
      */
diff --git a/classes/PlaylistArchiveVideo.php b/classes/PlaylistArchiveVideo.php
index cf3609b..d67c1ea 100644
--- a/classes/PlaylistArchiveVideo.php
+++ b/classes/PlaylistArchiveVideo.php
@@ -5,12 +5,6 @@
 
 namespace Alltube;
 
-use Barracuda\ArchiveStream\TarArchive;
-use GuzzleHttp\Client;
-use Psr\Http\Message\StreamInterface;
-use RuntimeException;
-use stdClass;
-
 /**
  * Video streamed to a PlaylistArchiveStream.
  */
diff --git a/index.php b/index.php
index 34d8d99..c42b96e 100644
--- a/index.php
+++ b/index.php
@@ -5,7 +5,6 @@ use Alltube\Config;
 use Alltube\Controller\FrontController;
 use Alltube\LocaleManager;
 use Alltube\LocaleMiddleware;
-use Alltube\PlaylistArchiveStream;
 use Alltube\UglyRouter;
 use Alltube\ViewFactory;
 use Slim\App;
diff --git a/tests/PlaylistArchiveStreamTest.php b/tests/PlaylistArchiveStreamTest.php
index 1c50c54..0f07b2e 100644
--- a/tests/PlaylistArchiveStreamTest.php
+++ b/tests/PlaylistArchiveStreamTest.php
@@ -8,8 +8,8 @@ namespace Alltube\Test;
 use Alltube\Config;
 use Alltube\PlaylistArchiveStream;
 use PHPUnit\Framework\TestCase;
-use stdClass;
 use RuntimeException;
+use stdClass;
 
 /**
  * Unit tests for the ViewFactory class.
@@ -64,7 +64,6 @@ class PlaylistArchiveStreamTest extends TestCase
         $this->stream->write('foo');
     }
 
-
     /**
      * Test the tell() function.
      *