Youtube Unable to download webpage

[Fabrimat]

• [x ] I've verified and I assure that I'm running youtube-dl 2017.01.10
• [x ] At least skimmed through README and most notably FAQ and BUGS sections
• [ x] Searched 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

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:

sinusbot@Server:/opt/ts3soundboard$ youtube-dl https://www.youtube.com/watch?v=7Qp5vcuMIlk
[youtube] 7Qp5vcuMIlk: Downloading webpage
ERROR: Unable to download webpage: HTTP Error 429: Too Many Requests (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.
sinusbot@Server:/opt/ts3soundboard$ youtube-dl -v https://www.youtube.com/watch?v=7Qp5vcuMIlk
[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: [u'-v', u'https://www.youtube.com/watch?v=7Qp5vcuMIlk']
[debug] Encodings: locale UTF-8, fs UTF-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2017.01.10
[debug] Python version 2.7.9 - Linux-3.14.32-xxxx-grs-ipv6-64-x86_64-with-Debian-8
[debug] exe versions: avconv 11.8-6, avprobe 11.8-6
[debug] Proxy map: {}
[youtube] 7Qp5vcuMIlk: Downloading webpage
ERROR: Unable to download webpage: HTTP Error 429: Too Many Requests (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 406, in _request_webpage
    return self._downloader.urlopen(url_or_request)
  File "/usr/local/bin/youtube-dl/youtube_dl/YoutubeDL.py", line 2001, in urlopen
    return self._opener.open(req, timeout=self._socket_timeout)
  File "/usr/lib/python2.7/urllib2.py", line 437, in open
    response = meth(req, response)
  File "/usr/lib/python2.7/urllib2.py", line 550, in http_response
    'http', request, response, code, msg, hdrs)
  File "/usr/lib/python2.7/urllib2.py", line 475, in error
    return self._call_chain(*args)
  File "/usr/lib/python2.7/urllib2.py", line 409, in _call_chain
    result = func(*args)
  File "/usr/lib/python2.7/urllib2.py", line 558, in http_error_default
    raise HTTPError(req.get_full_url(), code, msg, hdrs, fp)

Description of your issue, suggested solution and other information

If I try to download every video from Youtube I get this error. I tried using Python3 as they suggest here but it didn't work.

[dstftw]

1. https://github.com/rg3/youtube-dl#http-error-429-too-many-requests-or-402-payment-required
2. #5138.