[compat] Handle tuples properly in urlencode()

Fixes #9055

2 files changed, 6 insertions, 1 deletions

diff --git a/test/test_compat.py b/test/test_compat.py
index cc105807a..618668210 100644
--- a/test/test_compat.py
+++ b/test/test_compat.py
@@ -76,6 +76,10 @@ class TestCompat(unittest.TestCase):
         self.assertEqual(compat_urllib_parse_urlencode({'abc': b'def'}), 'abc=def')
         self.assertEqual(compat_urllib_parse_urlencode({b'abc': 'def'}), 'abc=def')
         self.assertEqual(compat_urllib_parse_urlencode({b'abc': b'def'}), 'abc=def')
+        self.assertEqual(compat_urllib_parse_urlencode([('abc', 'def')]), 'abc=def')
+        self.assertEqual(compat_urllib_parse_urlencode([('abc', b'def')]), 'abc=def')
+        self.assertEqual(compat_urllib_parse_urlencode([(b'abc', 'def')]), 'abc=def')
+        self.assertEqual(compat_urllib_parse_urlencode([(b'abc', b'def')]), 'abc=def')
 
     def test_compat_shlex_split(self):
         self.assertEqual(compat_shlex_split('-option "one two"'), ['-option', 'one two'])
diff --git a/youtube_dl/compat.py b/youtube_dl/compat.py
index 76b6b0e38..0b6c5ca7a 100644
--- a/youtube_dl/compat.py
+++ b/youtube_dl/compat.py
@@ -181,7 +181,8 @@ except ImportError:  # Python 2
             if isinstance(e, dict):
                 e = encode_dict(e)
             elif isinstance(e, (list, tuple,)):
-                e = encode_list(e)
+                list_e = encode_list(e)
+                e = tuple(list_e) if isinstance(e, tuple) else list_e
             elif isinstance(e, compat_str):
                 e = e.encode(encoding)
             return e