youtube-dl extracts some invalid ids from user video pages on pornhub.com

[throwaway75]

Checklist

• I'm reporting a broken site support
• I've verified that I'm running youtube-dl version 2019.04.30
• 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

youtube-dl --verbose  --add-metadata --embed-thumbnail   https://www.pornhub.com/model/rosieandalena/videos/
[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: [u'--verbose', u'--add-metadata', u'--embed-thumbnail', u'https://www.pornhub.com/model/rosieandalena/videos/']
[debug] Encodings: locale UTF-8, fs UTF-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2019.04.30
[debug] Python version 2.7.16 (CPython) - Linux-4.18.0-17-generic-x86_64-with-Ubuntu-18.10-cosmic
[debug] exe versions: ffmpeg 4.0.2-2, ffprobe 4.0.2-2, phantomjs 2.1.1, rtmpdump 2.4
[debug] Proxy map: {}
[PornHubUserVideos] rosieandalena: Downloading page 1
[PornHubUserVideos] rosieandalena: Downloading page 2
[PornHubUserVideos] rosieandalena: Downloading page 3
[PornHubUserVideos] rosieandalena: Downloading page 4
[download] Downloading playlist: rosieandalena
[PornHubUserVideos] playlist rosieandalena: Collected 132 video ids (downloading 132 of them)
[download] Downloading video 1 of 132
[PornHub] ph5cbfc9aaae5fa: Downloading pc webpage
[PornHub] ph5cbfc9aaae5fa: Downloading tv webpage
ERROR: Unable to download webpage: HTTP Error 404: Not Found (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.
  File "/usr/local/bin/youtube-dl/youtube_dl/extractor/common.py", line 626, in _request_webpage
    return self._downloader.urlopen(url_or_request)
  File "/usr/local/bin/youtube-dl/youtube_dl/YoutubeDL.py", line 2227, in urlopen
    return self._opener.open(req, timeout=self._socket_timeout)
  File "/usr/lib/python2.7/urllib2.py", line 435, in open
    response = meth(req, response)
  File "/usr/lib/python2.7/urllib2.py", line 548, in http_response
    'http', request, response, code, msg, hdrs)
  File "/usr/lib/python2.7/urllib2.py", line 467, in error
    result = self._call_chain(*args)
  File "/usr/lib/python2.7/urllib2.py", line 407, in _call_chain
    result = func(*args)
  File "/usr/lib/python2.7/urllib2.py", line 654, in http_error_302
    return self.parent.open(new, timeout=req.timeout)
  File "/usr/lib/python2.7/urllib2.py", line 435, in open
    response = meth(req, response)
  File "/usr/lib/python2.7/urllib2.py", line 548, in http_response
    'http', request, response, code, msg, hdrs)
  File "/usr/lib/python2.7/urllib2.py", line 473, in error
    return self._call_chain(*args)
  File "/usr/lib/python2.7/urllib2.py", line 407, in _call_chain
    result = func(*args)
  File "/usr/lib/python2.7/urllib2.py", line 556, in http_error_default
    raise HTTPError(req.get_full_url(), code, msg, hdrs, fp)

Description

youtube-dl extracts some invalid ids from user video pages on pornhub.com. Example url: https://www.pornhub.com/model/rosieandalena/videos/
This problem can be worked around with the "-c" option.
I think the problem is caused by fan videos.

[dstftw]

These are perfectly valid ids not available for regular users. This is expected behavior. -c has nothing to do with working around.