From 6a424391d9745f46c8451771ae4d62da389cc311 Mon Sep 17 00:00:00 2001
From: Yen Chi Hsuan <yan12125@gmail.com>
Date: Sat, 2 Jul 2016 23:15:55 +0800
Subject: [PATCH] [facebook] Make embed detection stricter to prevent
 false-positives

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

diff --git a/youtube_dl/extractor/facebook.py b/youtube_dl/extractor/facebook.py
index 6eaa22d89..bbdb14366 100644
--- a/youtube_dl/extractor/facebook.py
+++ b/youtube_dl/extractor/facebook.py
@@ -140,7 +140,7 @@ class FacebookIE(InfoExtractor):
         # see https://developers.facebook.com/docs/plugins/embedded-video-player
         mobj = re.search(r'''(?x)<div[^>]+
                 class=(?P<q1>[\'"])[^\'"]*\bfb-video\b[^\'"]*(?P=q1)[^>]+
-                data-href=(?P<q2>[\'"])(?P<url>[^\'"]+)(?P=q2)''', webpage)
+                data-href=(?P<q2>[\'"])(?P<url>(?:https?:)?//(?:www\.)?facebook.com/.+?)(?P=q2)''', webpage)
         if mobj is not None:
             return mobj.group('url')