diff --git a/youtube_dl/extractor/mediasite.py b/youtube_dl/extractor/mediasite.py
index de37df0c6..ef9628e65 100644
--- a/youtube_dl/extractor/mediasite.py
+++ b/youtube_dl/extractor/mediasite.py
@@ -21,7 +21,7 @@ from ..utils import (
 
 
 class MediasiteIE(InfoExtractor):
-    _VALID_URL = r'(?xi)https?://[^/]+/Mediasite/(?:Play|Showcase/livebroadcast/Presentation)/(?P<id>[0-9a-f]{32,34})(?P<query>\?[^#]+|)'
+    _VALID_URL = r'(?xi)https?://[^/]+/Mediasite/(?:Play|Showcase/(?:default|livebroadcast)/Presentation)/(?P<id>[0-9a-f]{32,34})(?P<query>\?[^#]+|)'
     _TESTS = [
         {
             'url': 'https://hitsmediaweb.h-its.org/mediasite/Play/2db6c271681e4f199af3c60d1f82869b1d',
@@ -89,6 +89,10 @@ class MediasiteIE(InfoExtractor):
             'url': 'https://collegerama.tudelft.nl/Mediasite/Showcase/livebroadcast/Presentation/ada7020854f743c49fbb45c9ec7dbb351d',
             'only_matching': True,
         },
+        {
+            'url': 'https://mediasite.ntnu.no/Mediasite/Showcase/default/Presentation/7d8b913259334b688986e970fae6fcb31d',
+            'only_matching': True,
+        },
     ]
 
     # look in Mediasite.Core.js (Mediasite.ContentStreamType[*])