[YoutubeDL] Improve _default_format_spec (closes #14461)

1 files changed, 8 insertions, 2 deletions

diff --git a/test/test_YoutubeDL.py b/test/test_YoutubeDL.py
index db936bfb8..4af92fbd4 100644
--- a/test/test_YoutubeDL.py
+++ b/test/test_YoutubeDL.py
@@ -466,12 +466,18 @@ class TestFormatSelection(unittest.TestCase):
         ydl = YDL({'simulate': True})
         self.assertEqual(ydl._default_format_spec({}), 'bestvideo+bestaudio/best')
 
+        ydl = YDL({'is_live': True})
+        self.assertEqual(ydl._default_format_spec({}), 'best/bestvideo+bestaudio')
+
+        ydl = YDL({'simulate': True, 'is_live': True})
+        self.assertEqual(ydl._default_format_spec({}), 'bestvideo+bestaudio/best')
+
         ydl = YDL({'outtmpl': '-'})
-        self.assertEqual(ydl._default_format_spec({}), 'best')
+        self.assertEqual(ydl._default_format_spec({}), 'best/bestvideo+bestaudio')
 
         ydl = YDL({})
         self.assertEqual(ydl._default_format_spec({}, download=False), 'bestvideo+bestaudio/best')
-        self.assertEqual(ydl._default_format_spec({'is_live': True}), 'best')
+        self.assertEqual(ydl._default_format_spec({'is_live': True}), 'best/bestvideo+bestaudio')
 
 
 class TestYoutubeDL(unittest.TestCase):