Repository: youtube-dl
Issue: Fails to download truTV episode after MSO Auth appears to be successful
Labels: tv-provider-account-needed

## Please follow the guide below

- You will be asked some questions and requested to provide some information, please read them **carefully** and answer honestly
- Put an `x` into all the boxes [ ] relevant to your *issue* (like this: `[x]`)
- Use the *Preview* tab to see what your issue will actually look like

---

### Make sure you are using the *latest* version: run `youtube-dl --version` and ensure your version is *2017.10.12*. If it's not, read [this FAQ entry](https://github.com/rg3/youtube-dl/blob/master/README.md#how-do-i-update-youtube-dl) and update. Issues with outdated version will be rejected.
- [x] I've **verified** and **I assure** that I'm running youtube-dl **2017.10.12**

### Before submitting an *issue* make sure you have:
- [x] At least skimmed through the [README](https://github.com/rg3/youtube-dl/blob/master/README.md), **most notably** the [FAQ](https://github.com/rg3/youtube-dl#faq) and [BUGS](https://github.com/rg3/youtube-dl#bugs) sections
- [x] [Searched](https://github.com/rg3/youtube-dl/search?type=Issues) the bugtracker for similar issues including closed ones

### What is the purpose of your *issue*?
- [x] Bug report (encountered problems with youtube-dl)
- [ ] Site support request (request for adding support for a new site)
- [ ] Feature request (request for a new functionality)
- [ ] Question
- [ ] Other

---

### The following sections concretize particular purposed issues, you can erase any section (the contents between triple ---) not applicable to your *issue*

---

### 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 the `-v` flag to **your command line** you run youtube-dl with (`youtube-dl -v <your command line>`), copy the **whole** output and insert it here. It should look similar to one below (replace it with **your** log inserted between triple ```):

```
youtube-dl http://www.trutv.com/full-episodes/adam-ruins-everything/2124090/index.html --ap-mso wavebroadband --ap-username PRIVATE -v
[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: [u'http://www.trutv.com/full-episodes/adam-ruins-everything/2124090/index.html', u'--ap-mso', u'wavebroadband', u'--ap-username', u'PRIVATE', u'-v']
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 2017.10.12
[debug] Python version 2.7.12 - Linux-4.4.26-gentoo-x86_64-Intel-R-_Core-TM-_i7-6700K_CPU_@_4.00GHz-with-gentoo-2.3
[debug] exe versions: ffmpeg 3.3.4, ffprobe 3.3.4, rtmpdump 2.4
[debug] Proxy map: {}
[TruTV] 2124090: Downloading webpage
[TruTV] Downloading XML
[TruTV] 2124090: Downloading Provider Redirect Page
[TruTV] 2124090: Downloading Provider Login Page
[TruTV] 2124090: Logging in
[TruTV] 2124090: Confirming Login
[TruTV] 2124090: Retrieving Session
ERROR: Unable to download webpage: 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; see  https://yt-dl.org/update  on how to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
  File "/usr/lib64/python2.7/site-packages/youtube_dl/extractor/common.py", line 503, in _request_webpage
    return self._downloader.urlopen(url_or_request)
  File "/usr/lib64/python2.7/site-packages/youtube_dl/YoutubeDL.py", line 2195, in urlopen
    return self._opener.open(req, timeout=self._socket_timeout)
  File "/usr/lib64/python2.7/urllib2.py", line 435, in open
    response = meth(req, response)
  File "/usr/lib64/python2.7/urllib2.py", line 548, in http_response
    'http', request, response, code, msg, hdrs)
  File "/usr/lib64/python2.7/urllib2.py", line 473, in error
    return self._call_chain(*args)
  File "/usr/lib64/python2.7/urllib2.py", line 407, in _call_chain
    result = func(*args)
  File "/usr/lib64/python2.7/urllib2.py", line 556, in http_error_default
    raise HTTPError(req.get_full_url(), code, msg, hdrs, fp)
```

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### Description of your *issue*, suggested solution and other information
When attempting to download the episode at http://www.trutv.com/full-episodes/adam-ruins-everything/2124090/index.html, an error appears after the MSO Auth appears to be successful.