From 1a95953867412bc7a785f21f6bff5145b2b13fd0 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Sergey=20M=E2=80=A4?= <dstftw@gmail.com>
Date: Tue, 29 Dec 2020 02:29:34 +0700
Subject: [PATCH] [youtube] Improve yt initial data extraction (closes #27524)

---
 youtube_dl/extractor/youtube.py | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/youtube_dl/extractor/youtube.py b/youtube_dl/extractor/youtube.py
index 0044ed909..87bdc1677 100644
--- a/youtube_dl/extractor/youtube.py
+++ b/youtube_dl/extractor/youtube.py
@@ -280,6 +280,7 @@ class YoutubeBaseInfoExtractor(InfoExtractor):
 
     _YT_INITIAL_DATA_RE = r'(?:window\s*\[\s*["\']ytInitialData["\']\s*\]|ytInitialData)\s*=\s*({.+?})\s*;'
     _YT_INITIAL_PLAYER_RESPONSE_RE = r'ytInitialPlayerResponse\s*=\s*({.+?})\s*;'
+    _YT_INITIAL_BOUNDARY_RE = r'(?:var\s+meta|</script|\n)'
 
     def _call_api(self, ep, query, video_id):
         data = self._DEFAULT_API_DATA.copy()
@@ -297,7 +298,7 @@ class YoutubeBaseInfoExtractor(InfoExtractor):
     def _extract_yt_initial_data(self, video_id, webpage):
         return self._parse_json(
             self._search_regex(
-                (r'%s\s*\n' % self._YT_INITIAL_DATA_RE,
+                (r'%s\s*%s' % (self._YT_INITIAL_DATA_RE, self._YT_INITIAL_BOUNDARY_RE),
                  self._YT_INITIAL_DATA_RE), webpage, 'yt initial data'),
             video_id)
 
@@ -1103,6 +1104,11 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
                 'skip_download': True,
             },
         },
+        {
+            # another example of '};' in ytInitialData
+            'url': 'https://www.youtube.com/watch?v=gVfgbahppCY',
+            'only_matching': True,
+        },
         {
             'url': 'https://www.youtube.com/watch_popup?v=63RmMXCd_bQ',
             'only_matching': True,
@@ -1706,7 +1712,7 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
         if not video_info and not player_response:
             player_response = extract_player_response(
                 self._search_regex(
-                    (r'%s\s*(?:var\s+meta|</script|\n)' % self._YT_INITIAL_PLAYER_RESPONSE_RE,
+                    (r'%s\s*%s' % (self._YT_INITIAL_PLAYER_RESPONSE_RE, self._YT_INITIAL_BOUNDARY_RE),
                      self._YT_INITIAL_PLAYER_RESPONSE_RE), video_webpage,
                     'initial player response', default='{}'),
                 video_id)