Type "help", "copyright", "credits" or "license" for more information.
>>> from urllib.parse import urljoin
>>> urljoin('rtsps://127.0.0.1/foo/bar', 'trackID=1')
'trackID=1'

Type "help", "copyright", "credits" or "license" for more information.
>>> from urllib.parse import urljoin
>>> urljoin('rtsps://127.0.0.1/foo/bar', 'trackID=1')
'rtsps://127.0.0.1/foo/trackID=1'
>>> 

--- parse.py.bak        2023-05-16 16:16:01.910634526 +0000
+++ parse.py    2023-05-16 16:17:35.793154580 +0000
@@ -46,17 +46,17 @@
 
 uses_relative = ['', 'ftp', 'http', 'gopher', 'nntp', 'imap',
                  'wais', 'file', 'https', 'shttp', 'mms',
-                 'prospero', 'rtsp', 'rtspu', 'sftp',
+                 'prospero', 'rtsp', 'rtsps', 'rtspu', 'sftp',
                  'svn', 'svn+ssh', 'ws', 'wss']
 
 uses_netloc = ['', 'ftp', 'http', 'gopher', 'nntp', 'telnet',
                'imap', 'wais', 'file', 'mms', 'https', 'shttp',
-               'snews', 'prospero', 'rtsp', 'rtspu', 'rsync',
+               'snews', 'prospero', 'rtsp', 'rtsps', 'rtspu', 'rsync',
                'svn', 'svn+ssh', 'sftp', 'nfs', 'git', 'git+ssh',
                'ws', 'wss']
 
 uses_params = ['', 'ftp', 'hdl', 'prospero', 'http', 'imap',
-               'https', 'shttp', 'rtsp', 'rtspu', 'sip', 'sips',
+               'https', 'shttp', 'rtsp', 'rtsps', 'rtspu', 'sip', 'sips',
                'mms', 'sftp', 'tel']
 
 # These are not actually used anymore, but should stay for backwards
@@ -66,7 +66,7 @@
                     'telnet', 'wais', 'imap', 'snews', 'sip', 'sips']
 
 uses_query = ['', 'http', 'wais', 'imap', 'https', 'shttp', 'mms',
-              'gopher', 'rtsp', 'rtspu', 'sip', 'sips']
+              'gopher', 'rtsp', 'rtsps', 'rtspu', 'sip', 'sips']
 
 uses_fragment = ['', 'ftp', 'hdl', 'http', 'gopher', 'news',
                  'nntp', 'wais', 'https', 'shttp', 'snews',