From 4c47effbcb7ae98cfb0f8da1cefd46e852426056 Mon Sep 17 00:00:00 2001
From: Chad Estioco <chadestioco@gmail.com>
Date: Sat, 4 Jul 2020 05:40:24 +0800
Subject: [PATCH] [vimeo] Allow for iframe embeds that don't quote src.

Modern browsers are at least lenient enough to allow this and render the page
correctly so youtube_dl should be able to crawl these too.
---
 youtube_dl/extractor/vimeo.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/youtube_dl/extractor/vimeo.py b/youtube_dl/extractor/vimeo.py
index 421795b94..6f947515e 100644
--- a/youtube_dl/extractor/vimeo.py
+++ b/youtube_dl/extractor/vimeo.py
@@ -523,7 +523,7 @@ class VimeoIE(VimeoBaseInfoExtractor):
         urls = []
         # Look for embedded (iframe) Vimeo player
         for mobj in re.finditer(
-                r'<iframe[^>]+?src=(["\'])(?P<url>(?:https?:)?//player\.vimeo\.com/video/\d+.*?)\1',
+                r'<iframe[^>]+?src=(["\']?)(?P<url>(?:https?:)?//player\.vimeo\.com/video/\d+.*?)\1',
                 webpage):
             urls.append(VimeoIE._smuggle_referrer(unescapeHTML(mobj.group('url')), url))
         PLAIN_EMBED_RE = (