From b0df5223be5429da0378841dc33eecb532f6898f Mon Sep 17 00:00:00 2001
From: dyn888 <dyn.8.8.8+github@gmail.com>
Date: Thu, 28 Jan 2016 12:07:15 +0100
Subject: [PATCH] Update YoutubeDL.py

---
 youtube_dl/YoutubeDL.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/youtube_dl/YoutubeDL.py b/youtube_dl/YoutubeDL.py
index 09d2b18f2..e1bd40843 100755
--- a/youtube_dl/YoutubeDL.py
+++ b/youtube_dl/YoutubeDL.py
@@ -906,7 +906,7 @@ def _build_format_filter(self, filter_spec):
             str_operator_rex = re.compile(r'''(?x)
                 \s*(?P<key>ext|acodec|vcodec|container|protocol)
                 \s*(?P<op>%s)(?P<none_inclusive>\s*\?)?
-                \s*(?P<value>[a-zA-Z0-9_-]+)
+                \s*(?P<value>[a-zA-Z0-9._-]+)
                 \s*$
                 ''' % '|'.join(map(re.escape, STR_OPERATORS.keys())))
             m = str_operator_rex.search(filter_spec)