>>> from pytubefix import YouTube as Video
>>> v = Video("https://www.youtube.com/watch?v=dQw4w9WgXcQ", use_po_token=True)
>>> v
<pytubefix.__main__.YouTube object: videoId=dQw4w9WgXcQ>
>>> v.streams
You can use the tool: https://github.com/YunzheZJU/youtube-po-token-generator, to get the token
Enter with your visitorData: Cgs5*****************************
Enter with your po_token: MnSteH******************************************************
Traceback (most recent call last):
  File "<pyshell#10>", line 1, in <module>
    v.streams
  File "C:\Users\robus\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.13_qbz5n2kfra8p0\LocalCache\local-packages\Python313\site-packages\pytubefix\__main__.py", line 636, in streams
    self.check_availability()
  File "C:\Users\robus\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.13_qbz5n2kfra8p0\LocalCache\local-packages\Python313\site-packages\pytubefix\__main__.py", line 316, in check_availability
    status, messages = extract.playability_status(self.vid_info)
  File "C:\Users\robus\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.13_qbz5n2kfra8p0\LocalCache\local-packages\Python313\site-packages\pytubefix\__main__.py", line 425, in vid_info
    innertube_response = innertube.player(self.video_id)
  File "C:\Users\robus\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.13_qbz5n2kfra8p0\LocalCache\local-packages\Python313\site-packages\pytubefix\innertube.py", line 871, in player
    return self._call_api(endpoint, query, self.base_data)
  File "C:\Users\robus\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.13_qbz5n2kfra8p0\LocalCache\local-packages\Python313\site-packages\pytubefix\innertube.py", line 778, in _call_api
    response = request._execute_request(
  File "C:\Users\robus\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.13_qbz5n2kfra8p0\LocalCache\local-packages\Python313\site-packages\pytubefix\request.py", line 35, in _execute_request
    return urlopen(request, timeout=timeout)  # nosec
  File "C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.13_3.13.752.0_x64__qbz5n2kfra8p0\Lib\urllib\request.py", line 189, in urlopen
    return opener.open(url, data, timeout)
  File "C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.13_3.13.752.0_x64__qbz5n2kfra8p0\Lib\urllib\request.py", line 495, in open
    response = meth(req, response)
  File "C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.13_3.13.752.0_x64__qbz5n2kfra8p0\Lib\urllib\request.py", line 604, in http_response
    response = self.parent.error(
  File "C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.13_3.13.752.0_x64__qbz5n2kfra8p0\Lib\urllib\request.py", line 533, in error
    return self._call_chain(*args)
  File "C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.13_3.13.752.0_x64__qbz5n2kfra8p0\Lib\urllib\request.py", line 466, in _call_chain
    result = func(*args)
  File "C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.13_3.13.752.0_x64__qbz5n2kfra8p0\Lib\urllib\request.py", line 613, in http_error_default
    raise HTTPError(req.full_url, code, msg, hdrs, fp)
urllib.error.HTTPError: HTTP Error 400: Bad Request