diff --git a/embed_video/templatetags/embed_video_tags.py b/embed_video/templatetags/embed_video_tags.py
index 4ea32ef..983ddb5 100644
--- a/embed_video/templatetags/embed_video_tags.py
+++ b/embed_video/templatetags/embed_video_tags.py
@@ -48,7 +48,7 @@ class VideoNode(Node):
     error_msg = 'Syntax error. Expected: ``{% video URL ... %}``'
     default_size = 'small'
 
-    re_size = re.compile('(?P<width>\d+)x(?P<height>\d+)')
+    re_size = re.compile('(?P<width>\w+[%]?)x(?P<height>\w+[%]?)')
 
     def __init__(self, parser, token):
         self.size = None
@@ -150,7 +150,7 @@ class VideoNode(Node):
 
         try:
             size = VideoNode.re_size.match(value)
-            return [int(size.group('width')), int(size.group('height'))]
+            return [size.group('width'), size.group('height')]
         except AttributeError:
             raise TemplateSyntaxError(
                 'Incorrect size.\nPossible format is WIDTHxHEIGHT or using '