Discovery channel returning an error

[cas4]

Checklist

• I'm reporting a broken site support
• I've verified that I'm running youtube-dl version 2019.07.16
• I've checked that all provided URLs are alive and playable in a browser
• I've checked that all URLs and arguments with special characters are properly quoted or escaped
• I've searched the bugtracker for similar issues including closed ones

Verbose log

C:\Users\aspears\Desktop\YouTube-Dl>youtube-dl.exe --verbose --hls-prefer-native --cookies ./cookies_discovery.txt -o ".\Movies\battlebotstest.mp4" https://www.discovery.com/tv-shows/battlebots/full-episodes/buckers-and-brawlers-2
[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: ['--verbose', '--hls-prefer-native', '--cookies', './cookies_discovery.txt', '-o', '.\\Movies\\battlebotstest.mp4', 'https://www.discovery.com/tv-shows/battlebots/full-episodes/buckers-and-brawlers-2']
[debug] Encodings: locale cp1252, fs mbcs, out cp437, pref cp1252
[debug] youtube-dl version 2019.07.16
[debug] Python version 3.4.4 (CPython) - Windows-10-10.0.17134
[debug] exe versions: ffmpeg N-61620-ge555e1b, ffprobe git-2017-12-23-d02289c
[debug] Proxy map: {}
[Discovery] buckers-and-brawlers-2: Downloading webpage
[Discovery] buckers-and-brawlers-2: Downloading JSON metadata
ERROR: Access to the requested resource path is unauthorized: v1/streaming/video/5d28a90585aeee0ab80c033c [The access token provided has expired]; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; type  youtube-dl -U  to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
Traceback (most recent call last):
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpaxmfe_l6\build\youtube_dl\extractor\common.py", line 627, in _request_webpage
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpaxmfe_l6\build\youtube_dl\YoutubeDL.py", line 2227, in urlopen
  File "C:\Python\Python34\lib\urllib\request.py", line 470, in open
  File "C:\Python\Python34\lib\urllib\request.py", line 580, in http_response
  File "C:\Python\Python34\lib\urllib\request.py", line 508, in error
  File "C:\Python\Python34\lib\urllib\request.py", line 442, in _call_chain
  File "C:\Python\Python34\lib\urllib\request.py", line 588, in http_error_default
urllib.error.HTTPError: HTTP Error 401: Unauthorized

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpaxmfe_l6\build\youtube_dl\extractor\discovery.py", line 102, in _real_extract
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpaxmfe_l6\build\youtube_dl\extractor\common.py", line 892, in _download_json
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpaxmfe_l6\build\youtube_dl\extractor\common.py", line 870, in _download_json_handle
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpaxmfe_l6\build\youtube_dl\extractor\common.py", line 660, in _download_webpage_handle
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpaxmfe_l6\build\youtube_dl\extractor\common.py", line 645, in _request_webpage
youtube_dl.utils.ExtractorError: Unable to download JSON metadata: HTTP Error 401: Unauthorized (caused by HTTPError()); please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; type  youtube-dl -U  to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
Traceback (most recent call last):
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpaxmfe_l6\build\youtube_dl\extractor\common.py", line 627, in _request_webpage
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpaxmfe_l6\build\youtube_dl\YoutubeDL.py", line 2227, in urlopen
  File "C:\Python\Python34\lib\urllib\request.py", line 470, in open
  File "C:\Python\Python34\lib\urllib\request.py", line 580, in http_response
  File "C:\Python\Python34\lib\urllib\request.py", line 508, in error
  File "C:\Python\Python34\lib\urllib\request.py", line 442, in _call_chain
  File "C:\Python\Python34\lib\urllib\request.py", line 588, in http_error_default
urllib.error.HTTPError: HTTP Error 401: Unauthorized

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpaxmfe_l6\build\youtube_dl\extractor\discovery.py", line 102, in _real_extract
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpaxmfe_l6\build\youtube_dl\extractor\common.py", line 892, in _download_json
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpaxmfe_l6\build\youtube_dl\extractor\common.py", line 870, in _download_json_handle
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpaxmfe_l6\build\youtube_dl\extractor\common.py", line 660, in _download_webpage_handle
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpaxmfe_l6\build\youtube_dl\extractor\common.py", line 645, in _request_webpage
youtube_dl.utils.ExtractorError: Unable to download JSON metadata: HTTP Error 401: Unauthorized (caused by HTTPError()); please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; type  youtube-dl -U  to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpaxmfe_l6\build\youtube_dl\YoutubeDL.py", line 796, in extract_info
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpaxmfe_l6\build\youtube_dl\extractor\common.py", line 530, in extract
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpaxmfe_l6\build\youtube_dl\extractor\discovery.py", line 113, in _real_extract
youtube_dl.utils.ExtractorError: Access to the requested resource path is unauthorized: v1/streaming/video/5d28a90585aeee0ab80c033c [The access token provided has expired]; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; type  youtube-dl -U  to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.

C:\Users\aspears\Desktop\YouTube-Dl>youtube-dl.exe --verbose --hls-prefer-native --cookies ./cookies_discovery.txt -o ".\Movies\battlebotstest.mp4" https://go.discovery.com/tv-shows/battlebots/full-episodes/buckers-and-brawlers-2
[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: ['--verbose', '--hls-prefer-native', '--cookies', './cookies_discovery.txt', '-o', '.\\Movies\\battlebotstest.mp4', 'https://go.discovery.com/tv-shows/battlebots/full-episodes/buckers-and-brawlers-2']
[debug] Encodings: locale cp1252, fs mbcs, out cp437, pref cp1252
[debug] youtube-dl version 2019.07.16
[debug] Python version 3.4.4 (CPython) - Windows-10-10.0.17134
[debug] exe versions: ffmpeg N-61620-ge555e1b, ffprobe git-2017-12-23-d02289c
[debug] Proxy map: {}
[generic] buckers-and-brawlers-2: Requesting header
WARNING: Falling back on generic information extractor.
[generic] buckers-and-brawlers-2: Downloading webpage
[generic] buckers-and-brawlers-2: Extracting information
ERROR: Unsupported URL: https://go.discovery.com/tv-shows/battlebots/full-episodes/buckers-and-brawlers-2
Traceback (most recent call last):
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpaxmfe_l6\build\youtube_dl\YoutubeDL.py", line 796, in extract_info
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpaxmfe_l6\build\youtube_dl\extractor\common.py", line 530, in extract
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpaxmfe_l6\build\youtube_dl\extractor\generic.py", line 3333, in _real_extract
youtube_dl.utils.UnsupportedError: Unsupported URL: https://go.discovery.com/tv-shows/battlebots/full-episodes/buckers-and-brawlers-2

Description

I successfully downloaded a Battle Bots episode on 7/7/2019 (s04e05), now I'm getting the above errors. I tried the URLs "go.discovery.com/" and "www.discovery.com/" and both failed (both outputs are above). I started watching the episode in Chrome and downloaded the cookies file twice, replaced \n with \r\n (I'm on a Windows environment) with no success. It appears something has changed in the past few weeks.

[dstftw]

You must provide account credentials.

[cas4]

It worked previously with only the cookies file and I get the exact same error messages when I add the "--ap-mso" args, It appears something has changed with Discovery unless there is another command line argument I'm not aware of.

[Diegus83]

The problem is that Discovery changed the URLs to "go.discovery.com" and those are not picked up by the extractor. It has been fixed by this commit
3b446ab

You can run the current code in developer mode or wait for the next release which will probably include the fix.