>>461
お答えありがとうございます。
Streamfabは試しましたがダウンロードボタンが表示されませんでした。
アドバイスいただいたcookieも試してみたのですが、このようなエラーが出てしまいました↓

yt-dlp --cookies-from-browser chrome https://2u.fan/channels/748418013268/lives/250353771404
[Cookies] Extracting cookies from chrome
Traceback (most recent call last):
File "yt_dlp\__main__.py", line 17, in <module>
yt_dlp.main()
File "yt_dlp\__init__.py", line 967, in main
_exit(*variadic(_real_main(argv)))
File "yt_dlp\__init__.py", line 927, in _real_main
with YoutubeDL(ydl_opts) as ydl:
File "yt_dlp\YoutubeDL.py", line 740, in __init__
self._setup_opener()
File "yt_dlp\YoutubeDL.py", line 3871, in _setup_opener
self.cookiejar = load_cookies(opts_cookiefile, opts_cookiesfrombrowser, self)
File "yt_dlp\cookies.py", line 99, in load_cookies
extract_cookies_from_browser(browser_name, profile, YDLLogger(ydl), keyring=keyring, container=container))
File "yt_dlp\cookies.py", line 120, in extract_cookies_from_browser
return _extract_chrome_cookies(browser_name, profile, keyring, logger)
File "yt_dlp\cookies.py", line 289, in _extract_chrome_cookies
cursor = _open_database_copy(cookie_database_path, tmpdir)
File "yt_dlp\cookies.py", line 952, in _open_database_copy
shutil.copy(database_path, database_copy_path)
File "shutil.py", line 418, in copy
File "shutil.py", line 264, in copyfile
PermissionError: [Errno 13] Permission denied: 'C:\\Users\\frinw\\AppData\\Local\\Google\\Chrome\\User Data\\Default\\Network\\Cookies'
[18940] Failed to execute script '__main__' due to unhandled exception!