diff --git a/youtube_dl/extractor/common.py b/youtube_dl/extractor/common.py
index 8d71494b4..48742189a 100644
--- a/youtube_dl/extractor/common.py
+++ b/youtube_dl/extractor/common.py
@@ -157,6 +157,7 @@ class InfoExtractor(object):
     view_count:     How many users have watched the video on the platform.
     like_count:     Number of positive ratings of the video
     dislike_count:  Number of negative ratings of the video
+    average_rating: Average rating give by users, the scale used depends on the webpage
     comment_count:  Number of comments on the video
     comments:       A list of comments, each with one or more of the following
                     properties (all but one of text or html optional):
diff --git a/youtube_dl/extractor/youtube.py b/youtube_dl/extractor/youtube.py
index 8b91fff18..35ef4c303 100644
--- a/youtube_dl/extractor/youtube.py
+++ b/youtube_dl/extractor/youtube.py
@@ -25,6 +25,7 @@
 from ..utils import (
     clean_html,
     ExtractorError,
+    float_or_none,
     get_element_by_attribute,
     get_element_by_id,
     int_or_none,
@@ -1124,6 +1125,7 @@ def _map_to_format_list(urlmap):
             'view_count': view_count,
             'like_count': like_count,
             'dislike_count': dislike_count,
+            'average_rating': float_or_none(video_info.get('avg_rating', [None])[0]),
             'formats': formats,
         }