From 6f2eaaf73daef3ac0995cd7b51c677b003c04218 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Sergey=20M=E2=80=A4?= <dstftw@gmail.com>
Date: Sun, 27 Dec 2020 22:57:50 +0700
Subject: [PATCH] [teachable] Improve embed detection (closes #26923)

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

diff --git a/youtube_dl/extractor/teachable.py b/youtube_dl/extractor/teachable.py
index 6f264bddc..2394f86d4 100644
--- a/youtube_dl/extractor/teachable.py
+++ b/youtube_dl/extractor/teachable.py
@@ -140,7 +140,7 @@ class TeachableIE(TeachableBaseIE):
     @staticmethod
     def _is_teachable(webpage):
         return 'teachableTracker.linker:autoLink' in webpage and re.search(
-            r'<link[^>]+href=["\']https?://process\.fs\.teachablecdn\.com',
+            r'<link[^>]+href=["\']https?://(?:process\.fs|assets)\.teachablecdn\.com',
             webpage)
 
     @staticmethod