diff --git a/yt_dlp/utils/_utils.py b/yt_dlp/utils/_utils.py
index 6942e7f298..50652c1e45 100644
--- a/yt_dlp/utils/_utils.py
+++ b/yt_dlp/utils/_utils.py
@@ -2945,6 +2945,7 @@ def mimetype2ext(mt, default=NO_DEFAULT):
         'x-ms-asf': 'asf',
         'x-ms-wmv': 'wmv',
         'x-msvideo': 'avi',
+        'vnd.dlna.mpeg-tts': 'mpeg',
 
         # application (streaming playlists)
         'dash+xml': 'mpd',