Move Video class to a separate library

+ improve error handling
+ youtube-dl update

classes/streams/ConvertedPlaylistArchiveStream.php

@@ -6,8 +6,8 @@
 
 namespace Alltube\Stream;
 
-use Alltube\Video;
-use Exception;
+use Alltube\Library\Exception\AlltubeLibraryException;
+use Alltube\Library\Video;
 use Slim\Http\Stream;
 
 /**
@@ -21,11 +21,11 @@ class ConvertedPlaylistArchiveStream extends PlaylistArchiveStream
      * @param Video $video Video to stream
      *
      * @return void
-     * @throws Exception
+     * @throws AlltubeLibraryException
      */
     protected function startVideoStream(Video $video)
     {
-        $this->curVideoStream = new Stream($video->getAudioStream());
+        $this->curVideoStream = new Stream($this->downloader->getAudioStream($video));
 
         $this->init_file_stream_transfer(
             $video->getFileNameWithExtension('mp3'),