Failed to download m3u8 information: HTTP Error 401: Unauthorized

[mishoops]

Hi, I'm getting the following issue downloading videos. I filled in both embed_url and referer fields:

[generic] video: Downloading webpage
[generic] video: Downloading m3u8 information
ERROR: [generic] Failed to download m3u8 information: HTTP Error 401: Unauthorized (caused by <HTTPError 401: Unauthorized>); please report this issue on  https://github.com/yt-dlp/yt-dlp/issues?q= , filling out the appropriate issue template. Confirm you are on the latest version using  yt-dlp -U
Traceback (most recent call last):
  File "/Users/michal/.pyenv/versions/3.8.6/lib/python3.8/site-packages/yt_dlp/YoutubeDL.py", line 4082, in urlopen
    return self._request_director.send(req)
  File "/Users/michal/.pyenv/versions/3.8.6/lib/python3.8/site-packages/yt_dlp/networking/common.py", line 114, in send
    response = handler.send(request)
  File "/Users/michal/.pyenv/versions/3.8.6/lib/python3.8/site-packages/yt_dlp/networking/_helper.py", line 204, in wrapper
    return func(self, *args, **kwargs)
  File "/Users/michal/.pyenv/versions/3.8.6/lib/python3.8/site-packages/yt_dlp/networking/common.py", line 325, in send
    return self._send(request)
  File "/Users/michal/.pyenv/versions/3.8.6/lib/python3.8/site-packages/yt_dlp/networking/_requests.py", line 343, in _send
    raise HTTPError(res, redirect_loop=max_redirects_exceeded)
yt_dlp.networking.exceptions.HTTPError: HTTP Error 401: Unauthorized

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/Users/michal/.pyenv/versions/3.8.6/lib/python3.8/site-packages/yt_dlp/extractor/common.py", line 850, in _request_webpage
    return self._downloader.urlopen(self._create_request(url_or_request, data, headers, query))
  File "/Users/michal/.pyenv/versions/3.8.6/lib/python3.8/site-packages/yt_dlp/YoutubeDL.py", line 4114, in urlopen
    raise _CompatHTTPError(e) from e
yt_dlp.networking.exceptions._CompatHTTPError: HTTP Error 401: Unauthorized

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/Users/michal/.pyenv/versions/3.8.6/lib/python3.8/site-packages/yt_dlp/YoutubeDL.py", line 1587, in wrapper
    return func(self, *args, **kwargs)
  File "/Users/michal/.pyenv/versions/3.8.6/lib/python3.8/site-packages/yt_dlp/YoutubeDL.py", line 1722, in __extract_info
    ie_result = ie.extract(url)
  File "/Users/michal/.pyenv/versions/3.8.6/lib/python3.8/site-packages/yt_dlp/extractor/common.py", line 718, in extract
    ie_result = self._real_extract(url)
  File "/Users/michal/.pyenv/versions/3.8.6/lib/python3.8/site-packages/yt_dlp/extractor/generic.py", line 2420, in _real_extract
    formats, subtitles = self._extract_m3u8_formats_and_subtitles(url, video_id, 'mp4', headers=headers)
  File "/Users/michal/.pyenv/versions/3.8.6/lib/python3.8/site-packages/yt_dlp/extractor/common.py", line 1968, in _extract_m3u8_formats_and_subtitles
    res = self._download_webpage_handle(
  File "/Users/michal/.pyenv/versions/3.8.6/lib/python3.8/site-packages/yt_dlp/extractor/common.py", line 906, in _download_webpage_handle
    urlh = self._request_webpage(url_or_request, video_id, note, errnote, fatal, data=data, headers=headers, query=query, expected_status=expected_status)
  File "/Users/michal/.pyenv/versions/3.8.6/lib/python3.8/site-packages/yt_dlp/extractor/common.py", line 863, in _request_webpage
    raise ExtractorError(errmsg, cause=err)
yt_dlp.utils.ExtractorError: [generic] Failed to download m3u8 information: HTTP Error 401: Unauthorized (caused by <HTTPError 401: Unauthorized>); please report this issue on  https://github.com/yt-dlp/yt-dlp/issues?q= , filling out the appropriate issue template. Confirm you are on the latest version using  yt-dlp -U

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "b-cdn-drm-vod-dl.py", line 188, in <module>
    video.download()
  File "b-cdn-drm-vod-dl.py", line 174, in download
    ydl.download(url)
  File "/Users/michal/.pyenv/versions/3.8.6/lib/python3.8/site-packages/yt_dlp/YoutubeDL.py", line 3541, in download
    self.__download_wrapper(self.extract_info)(
  File "/Users/michal/.pyenv/versions/3.8.6/lib/python3.8/site-packages/yt_dlp/YoutubeDL.py", line 3516, in wrapper
    res = func(*args, **kwargs)
  File "/Users/michal/.pyenv/versions/3.8.6/lib/python3.8/site-packages/yt_dlp/YoutubeDL.py", line 1576, in extract_info
    return self.__extract_info(url, self.get_info_extractor(key), download, extra_info, process)
  File "/Users/michal/.pyenv/versions/3.8.6/lib/python3.8/site-packages/yt_dlp/YoutubeDL.py", line 1605, in wrapper
    self.report_error(str(e), e.format_traceback())
  File "/Users/michal/.pyenv/versions/3.8.6/lib/python3.8/site-packages/yt_dlp/YoutubeDL.py", line 1054, in report_error
    self.trouble(f'{self._format_err("ERROR:", self.Styles.ERROR)} {message}', *args, **kwargs)
  File "/Users/michal/.pyenv/versions/3.8.6/lib/python3.8/site-packages/yt_dlp/YoutubeDL.py", line 993, in trouble
    raise DownloadError(message, exc_info)
yt_dlp.utils.DownloadError: ERROR: [generic] Failed to download m3u8 information: HTTP Error 401: Unauthorized (caused by <HTTPError 401: Unauthorized>); please report this issue on  https://github.com/yt-dlp/yt-dlp/issues?q= , filling out the appropriate issue template. Confirm you are on the latest version using  yt-dlp -U```

`Latest version: stable@2023.12.30 from yt-dlp/yt-dlp
yt-dlp is up to date (stable@2023.12.30 from yt-dlp/yt-dlp)`

[mishoops]

i tried it again and again and again, one right after another, and after running "python3 b-cdn-drm-vod-dl.py" unsuccessful 4 times (with error 401), it started to work on the 5th run, i will check if there is maybe a timeout issue or something

[MaZED-UP]

In that case, increase the ping time.

        for i in range(0, 29, 4):  # first 28 seconds, arbitrary

Replace 29 in the program file with a higher value in the prepare_dl method.

[mishoops]

thanks, that solved the problem, i put it to 40 and no 401s anymore, some odd timeouts but in the end it downloads:
[download] Destination: /Users/michal/Videos/Bunny CDN/.BTC PAF 07B Starting Out v2/BTC PAF 07B Starting Out v2 [download] 92.5% of ~ 96.97MiB at 3.71MiB/s ETA 00:03 (frag 259/281)[download] Got error: HTTPSConnectionPool(host='vz-acc7608b-fa3.b-cdn.net', port=443): Read timed out. (read timeout=20.0). Retrying (1/inf)... [download] 99.2% of ~ 96.54MiB at 4.00MiB/s ETA 00:00 (frag 280/281)[download] Got error: HTTPSConnectionPool(host='vz-acc7608b-fa3.b-cdn.net', port=443): Read timed out. (read timeout=20.0). Retrying (1/inf)... [download] 100% of 96.14MiB in 00:01:02 at 1.55MiB/s [MoveFiles] Moving file "/Users/michal/Videos/Bunny CDN/.BTC PAF 07B Starting Out v2/BTC PAF 07B Starting Out v2" to "/Users/michal/Videos/Bunny CDN/BTC PAF 07B Starting Out v2"