BBC America Comcast Post URL failure.

[mfocht]

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Make sure you are using the latest version: run youtube-dl --version and ensure your version is 2017.06.12. If it's not read this FAQ entry and update. Issues with outdated version will be rejected.

• I've verified and I assure that I'm running youtube-dl 2017.06.12

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• Searched the bugtracker for similar issues including closed ones

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If the purpose of this issue is a bug report, site support request or you are not completely sure provide the full verbose output as follows:

Add -v flag to your command line you run youtube-dl with, copy the whole output and insert it here. It should look similar to one below (replace it with your log inserted between triple ```):

[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: [u'www.bbcamerica.com/shows/doctor-who/full-episodes/season-10/episode-02-smile', u'--ap-mso', u'Comcast_SSO', u'--ap-username', u'PRIVATE', u'--verbose']
Type TV provider account password and press [Return]: 
[debug] Encodings: locale UTF-8, fs UTF-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2017.06.12
[debug] Python version 2.7.5 - Linux-3.10.0-514.21.1.el7.x86_64-x86_64-with-centos-7.3.1611-Core
[debug] exe versions: none
[debug] Proxy map: {}
WARNING: The url doesn't specify the protocol, trying with http
[AMCNetworks] episode-02-smile: Downloading webpage
[AMCNetworks] episode-02-smile: Downloading JSON metadata
[AMCNetworks] _O_WA3ZQmP_7: Downloading Provider Redirect Page
ERROR: Unable to extract post url; 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 "/usr/local/bin/youtube-dl/youtube_dl/YoutubeDL.py", line 762, in extract_info
    ie_result = ie.extract(url)
  File "/usr/local/bin/youtube-dl/youtube_dl/extractor/common.py", line 433, in extract
    ie_result = self._real_extract(url)
  File "/usr/local/bin/youtube-dl/youtube_dl/extractor/amcnetworks.py", line 82, in _real_extract
    url, video_id, requestor_id, resource)
  File "/usr/local/bin/youtube-dl/youtube_dl/extractor/adobepass.py", line 1422, in _extract_mvpd_auth
    'Downloading Provider Login Page')
  File "/usr/local/bin/youtube-dl/youtube_dl/extractor/adobepass.py", line 1348, in post_form
    post_url = self._html_search_regex(r'<form[^>]+action=(["\'])(?P<url>.+?)\1', form_page, 'post url', group='url')
  File "/usr/local/bin/youtube-dl/youtube_dl/extractor/common.py", line 791, in _html_search_regex
    res = self._search_regex(pattern, string, name, default, fatal, flags, group)
  File "/usr/local/bin/youtube-dl/youtube_dl/extractor/common.py", line 782, in _search_regex
    raise RegexNotFoundError('Unable to extract %s' % _name)
RegexNotFoundError: Unable to extract post url; 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.

[mfocht]

I've tried this on three different linux systems and several windows systems, and the issue is persistent across all of them. I've tried with and without a VPN, and I have had no luck.

[mfocht]

Also, this appears to be an issue with the comcast authentication in general, as it doesn't work with NBC either.

[remitamine]

Duplicate of #11257.