From a1d1c63678dcb075a8e741947c41abfee6c790a0 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Sergey=20M=E2=80=A4?= <dstftw@gmail.com>
Date: Sun, 28 Oct 2018 23:23:32 +0700
Subject: [PATCH] [screencast] Improve extraction (closes #14617, closes
 #17990)

---
 youtube_dl/extractor/screencast.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/youtube_dl/extractor/screencast.py b/youtube_dl/extractor/screencast.py
index c6554c905..69a0d01f3 100644
--- a/youtube_dl/extractor/screencast.py
+++ b/youtube_dl/extractor/screencast.py
@@ -92,7 +92,8 @@ class ScreencastIE(InfoExtractor):
 
         if video_url is None:
             video_url = self._html_search_regex(
-                r'"MediaContentUrl":"([^"]+)"', webpage, 'media content url', default=None)
+                r'MediaContentUrl["\']\s*:(["\'])(?P<url>(?:(?!\1).)+)\1',
+                webpage, 'video url', default=None, group='url')
 
         if video_url is None:
             video_url = self._html_search_meta(