can't download youtube videos

[aldrinpfg]

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Make sure you are using the latest version: run youtube-dl --version and ensure your version is 2017.03.07. 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 Issues with outdated version will be rejected.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 2017.03.07

Before submitting an issue make sure you have:

• At least skimmed through README and most notably FAQ and BUGS sections
• Searched the bugtracker for similar issues including closed ones

What is the purpose of your issue?

• 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

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The following sections concretize particular purposed issues, you can erase any section (the contents between triple ---) not applicable to your issue

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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 ```):

:~$ youtube-dl --verbose -F https://www.youtube.com/watch?v=X-m9sRRN9MA
[debug] System config: []
[debug] User config: []
[debug] Command-line args: [u'--verbose', u'-F', u'https://yt-dl.']
[debug] Encodings: locale UTF-8, fs UTF-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2016.06.25
[debug] Python version 2.7.12+ - Linux-4.8.0-41-generic-x86_64-with-Ubuntu-16.10-yakkety
[debug] exe versions: ffmpeg 3.0.7-0ubuntu0.16.10.1, ffprobe 3.0.7-0ubuntu0.16.10.1, rtmpdump 2.4
[debug] Proxy map: {}
[generic] yt-dl: Requesting header
^C
ERROR: Interrupted by user
apfg@apfg:~$ youtube-dl --verbose -F https://www.youtube.com/watch?v=X-m9sRRN9MA
[debug] System config: []
[debug] User config: []
[debug] Command-line args: [u'--verbose', u'-F', u'https://www.youtube.com/watch?v=X-m9sRRN9MA']
[debug] Encodings: locale UTF-8, fs UTF-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2016.06.25
[debug] Python version 2.7.12+ - Linux-4.8.0-41-generic-x86_64-with-Ubuntu-16.10-yakkety
[debug] exe versions: ffmpeg 3.0.7-0ubuntu0.16.10.1, ffprobe 3.0.7-0ubuntu0.16.10.1, rtmpdump 2.4
[debug] Proxy map: {}
[youtube] X-m9sRRN9MA: Downloading webpage
[youtube] X-m9sRRN9MA: Downloading video info webpage
[youtube] X-m9sRRN9MA: Extracting video information
[youtube] {22} signature length 40.40, html5 player en_US-vfl2GjLln
[youtube] X-m9sRRN9MA: Downloading player /yts/jsbin/player-en_US-vfl2GjLln/base.js
ERROR: Signature extraction failed: Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/youtube_dl/extractor/youtube.py", line 1001, in _decrypt_signature
    video_id, player_url, s
  File "/usr/lib/python2.7/dist-packages/youtube_dl/extractor/youtube.py", line 915, in _extract_signature_function
    errnote='Download of %s failed' % player_url)
  File "/usr/lib/python2.7/dist-packages/youtube_dl/extractor/common.py", line 503, in _download_webpage
    res = self._download_webpage_handle(url_or_request, video_id, note, errnote, fatal, encoding=encoding, data=data, headers=headers,
 query=query)
  File "/usr/lib/python2.7/dist-packages/youtube_dl/extractor/common.py", line 410, in _download_webpage_handle
    urlh = self._request_webpage(url_or_request, video_id, note, errnote, fatal, data=data, headers=headers, query=query)
  File "/usr/lib/python2.7/dist-packages/youtube_dl/extractor/common.py", line 390, in _request_webpage
    return self._downloader.urlopen(url_or_request)
  File "/usr/lib/python2.7/dist-packages/youtube_dl/YoutubeDL.py", line 1950, in urlopen
    return self._opener.open(req, timeout=self._socket_timeout)
  File "/usr/lib/python2.7/urllib2.py", line 421, in open
    protocol = req.get_type()
  File "/usr/lib/python2.7/urllib2.py", line 283, in get_type
    raise ValueError, "unknown url type: %s" % self.__original
ValueError: unknown url type: /yts/jsbin/player-en_US-vfl2GjLln/base.js
 (caused by ValueError(u'unknown url type: /yts/jsbin/player-en_US-vfl2GjLln/base.js',)); please report this issue on https://yt-dl.or
g/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 t
he --verbose flag and include its complete output.
Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/youtube_dl/extractor/youtube.py", line 1001, in _decrypt_signature
    video_id, player_url, s
  File "/usr/lib/python2.7/dist-packages/youtube_dl/extractor/youtube.py", line 915, in _extract_signature_function
    errnote='Download of %s failed' % player_url)
  File "/usr/lib/python2.7/dist-packages/youtube_dl/extractor/common.py", line 503, in _download_webpage
    res = self._download_webpage_handle(url_or_request, video_id, note, errnote, fatal, encoding=encoding, data=data, headers=headers,
 query=query)
  File "/usr/lib/python2.7/dist-packages/youtube_dl/extractor/common.py", line 410, in _download_webpage_handle
    urlh = self._request_webpage(url_or_request, video_id, note, errnote, fatal, data=data, headers=headers, query=query)
  File "/usr/lib/python2.7/dist-packages/youtube_dl/extractor/common.py", line 390, in _request_webpage
    return self._downloader.urlopen(url_or_request)
  File "/usr/lib/python2.7/dist-packages/youtube_dl/YoutubeDL.py", line 1950, in urlopen
    return self._opener.open(req, timeout=self._socket_timeout)
  File "/usr/lib/python2.7/urllib2.py", line 421, in open
    protocol = req.get_type()
  File "/usr/lib/python2.7/urllib2.py", line 283, in get_type
    raise ValueError, "unknown url type: %s" % self.__original
ValueError: unknown url type: /yts/jsbin/player-en_US-vfl2GjLln/base.js
Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/youtube_dl/YoutubeDL.py", line 676, in extract_info
    ie_result = ie.extract(url)
  File "/usr/lib/python2.7/dist-packages/youtube_dl/extractor/common.py", line 343, in extract
    return self._real_extract(url)
  File "/usr/lib/python2.7/dist-packages/youtube_dl/extractor/youtube.py", line 1574, in _real_extract
    encrypted_sig, video_id, player_url, age_gate)
  File "/usr/lib/python2.7/dist-packages/youtube_dl/extractor/youtube.py", line 1011, in _decrypt_signature
    'Signature extraction failed: ' + tb, cause=e)
ExtractorError: Signature extraction failed: Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/youtube_dl/extractor/youtube.py", line 1001, in _decrypt_signature
    video_id, player_url, s
  File "/usr/lib/python2.7/dist-packages/youtube_dl/extractor/youtube.py", line 915, in _extract_signature_function
    errnote='Download of %s failed' % player_url)
  File "/usr/lib/python2.7/dist-packages/youtube_dl/extractor/common.py", line 503, in _download_webpage
    res = self._download_webpage_handle(url_or_request, video_id, note, errnote, fatal, encoding=encoding, data=data, headers=headers,
 query=query)
  File "/usr/lib/python2.7/dist-packages/youtube_dl/extractor/common.py", line 410, in _download_webpage_handle
    urlh = self._request_webpage(url_or_request, video_id, note, errnote, fatal, data=data, headers=headers, query=query)
  File "/usr/lib/python2.7/dist-packages/youtube_dl/extractor/common.py", line 390, in _request_webpage
    return self._downloader.urlopen(url_or_request)
  File "/usr/lib/python2.7/dist-packages/youtube_dl/YoutubeDL.py", line 1950, in urlopen
    return self._opener.open(req, timeout=self._socket_timeout)
  File "/usr/lib/python2.7/urllib2.py", line 421, in open
    protocol = req.get_type()
  File "/usr/lib/python2.7/urllib2.py", line 283, in get_type
    raise ValueError, "unknown url type: %s" % self.__original
ValueError: unknown url type: /yts/jsbin/player-en_US-vfl2GjLln/base.js
 (caused by ValueError(u'unknown url type: /yts/jsbin/player-en_US-vfl2GjLln/base.js',));

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### If the purpose of this *issue* is a *site support request* please provide all kinds of example URLs support for which should be included (replace following example URLs by **yours**):
- Single video: https://www.youtube.com/watch?v=BaW_jenozKc
- Single video: https://youtu.be/BaW_jenozKc
- Playlist: https://www.youtube.com/playlist?list=PL4lCao7KL_QFVb7Iudeipvc2BCavECqzc

Note that **youtube-dl does not support sites dedicated to [copyright infringement](https://github.com/rg3/youtube-dl#can-you-add-support-for-this-anime-video-site-or-site-which-shows-current-movies-for-free)**. In order for site support request to be accepted all provided example URLs should not violate any copyrights.

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### Description of your *issue*, suggested solution and other information
youtube-dl can't perform its core function; pls see complete output above.
I'm using Lubuntu 16.10.
It worked before, and now it doesn't.  
The changes that were done were to update the OS by sudo apt upgrade.

Explanation of your *issue* in arbitrary form goes here. Please make sure the [description is worded well enough to be understood](https://github.com/rg3/youtube-dl#is-the-description-of-the-issue-itself-sufficient). Provide as much context and examples as possible.
If work on your *issue* requires account credentials please provide them or explain how one can obtain them.

[dstftw]

You are using an outdated version of youtube-dl. Read this FAQ entry if you have troubles updating.