[youtube] Expand _VALID_URL to support vid.plus

youtube_dl/extractor/youtube.py

@@ -202,7 +202,10 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
                                  v=
                              )
                          ))
-                         |youtu\.be/                                          # just youtu.be/xxxx
+                         |(?:
+                            youtu\.be|                                        # just youtu.be/xxxx
+                            vid\.plus                                         # or vid.plus/xxxx
+                         )/
                          |(?:www\.)?cleanvideosearch\.com/media/action/yt/watch\?videoId=
                          )
                      )?                                                       # all until now is optional -> you can pass the naked ID
@@ -624,6 +627,10 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
             'params': {
                 'skip_download': True,
             },
+        },
+        {
+            'url': 'http://vid.plus/FlRa-iH7PGw',
+            'only_matching': True,
         }
     ]