From c20b0e4fa7b73add166ed8b3ec371774e770447a Mon Sep 17 00:00:00 2001
From: ilpersi <lpersichetti@gmail.com>
Date: Sun, 18 Oct 2020 10:53:54 +0200
Subject: [PATCH] Fix teachable course download

---
 youtube_dl/extractor/teachable.py | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/youtube_dl/extractor/teachable.py b/youtube_dl/extractor/teachable.py
index a75369dbe..5a2df1ce6 100644
--- a/youtube_dl/extractor/teachable.py
+++ b/youtube_dl/extractor/teachable.py
@@ -139,9 +139,9 @@ 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',
-            webpage)
+        return 'teachableTracker.linker:autoLink' in webpage and (
+                re.search(r'<link[^>]+href=["\']https?://process\.fs\.teachablecdn\.com', webpage) or
+                re.search(r'<img[^>]+src=["\']https?://process\.fs\.teachablecdn\.com', webpage))
 
     @staticmethod
     def _extract_url(webpage, source_url):