Unable to download youtube videos

[ledzepi11in]

I have the latest version yet i keep getting this error whenever i try to download a video from youtube.

d:\Twitch>youtube-dl.py http://www.youtube.com/watch?v=Nw3bW2qQTRs --verbose
[debug] System config: []
[debug] User config: []
[debug] Command-line args: ['http://www.youtube.com/watch?v=Nw3bW2qQTRs', '--ver
bose']
[debug] youtube-dl version 2013.08.02
[debug] Python version 3.3.2 - Windows-7-6.1.7601-SP1
[debug] Proxy map: {}
[youtube] Setting language
WARNING: unable to set language: <urlopen error [SSL: CERTIFICATE_VERIFY_FAILED]
certificate verify failed (_ssl.c:547)>
[youtube] Nw3bW2qQTRs: Downloading video webpage
ERROR: Unable to download video webpage: <urlopen error [SSL: CERTIFICATE_VERIFY
_FAILED] certificate verify failed (_ssl.c:547)>
Traceback (most recent call last):
File "D:\Python\lib\urllib\request.py", line 1248, in do_open
h.request(req.get_method(), req.selector, req.data, headers)
File "D:\Python\lib\http\client.py", line 1061, in request
self._send_request(method, url, body, headers)
File "D:\Python\lib\http\client.py", line 1099, in _send_request
self.endheaders(body)
File "D:\Python\lib\http\client.py", line 1057, in endheaders
self._send_output(message_body)
File "D:\Python\lib\http\client.py", line 902, in _send_output
self.send(msg)
File "D:\Python\lib\http\client.py", line 840, in send
self.connect()
File "D:\Python\lib\http\client.py", line 1202, in connect
server_hostname=server_hostname)
File "D:\Python\lib\ssl.py", line 210, in wrap_socket
_context=self)
File "D:\Python\lib\ssl.py", line 310, in init
raise x
File "D:\Python\lib\ssl.py", line 306, in init
self.do_handshake()
File "D:\Python\lib\ssl.py", line 513, in do_handshake
self._sslobj.do_handshake()
ssl.SSLError: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c
:547)

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "D:\Twitch\youtube-dl.py\youtube_dl\extractor\youtube.py", line 548, in _
real_extract
video_webpage_bytes = compat_urllib_request.urlopen(request).read()
File "D:\Python\lib\urllib\request.py", line 156, in urlopen
return opener.open(url, data, timeout)
File "D:\Python\lib\urllib\request.py", line 469, in open
response = self._open(req, data)
File "D:\Python\lib\urllib\request.py", line 487, in _open
'_open', req)
File "D:\Python\lib\urllib\request.py", line 447, in _call_chain
result = func(*args)
File "D:\Python\lib\urllib\request.py", line 1283, in https_open
context=self._context, check_hostname=self._check_hostname)
File "D:\Python\lib\urllib\request.py", line 1251, in do_open
raise URLError(err)
urllib.error.URLError: <urlopen error [SSL: CERTIFICATE_VERIFY_FAILED] certifica
te verify failed (_ssl.c:547)>
Traceback (most recent call last):
File "D:\Python\lib\urllib\request.py", line 1248, in do_open
h.request(req.get_method(), req.selector, req.data, headers)
File "D:\Python\lib\http\client.py", line 1061, in request
self._send_request(method, url, body, headers)
File "D:\Python\lib\http\client.py", line 1099, in _send_request
self.endheaders(body)
File "D:\Python\lib\http\client.py", line 1057, in endheaders
self._send_output(message_body)
File "D:\Python\lib\http\client.py", line 902, in _send_output
self.send(msg)
File "D:\Python\lib\http\client.py", line 840, in send
self.connect()
File "D:\Python\lib\http\client.py", line 1202, in connect
server_hostname=server_hostname)
File "D:\Python\lib\ssl.py", line 210, in wrap_socket
_context=self)
File "D:\Python\lib\ssl.py", line 310, in init
raise x
File "D:\Python\lib\ssl.py", line 306, in init
self.do_handshake()
File "D:\Python\lib\ssl.py", line 513, in do_handshake
self._sslobj.do_handshake()
ssl.SSLError: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c
:547)

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "D:\Twitch\youtube-dl.py\youtube_dl\extractor\youtube.py", line 548, in _
real_extract
video_webpage_bytes = compat_urllib_request.urlopen(request).read()
File "D:\Python\lib\urllib\request.py", line 156, in urlopen
return opener.open(url, data, timeout)
File "D:\Python\lib\urllib\request.py", line 469, in open
response = self._open(req, data)
File "D:\Python\lib\urllib\request.py", line 487, in _open
'_open', req)
File "D:\Python\lib\urllib\request.py", line 447, in _call_chain
result = func(*args)
File "D:\Python\lib\urllib\request.py", line 1283, in https_open
context=self._context, check_hostname=self._check_hostname)
File "D:\Python\lib\urllib\request.py", line 1251, in do_open
raise URLError(err)
urllib.error.URLError: <urlopen error [SSL: CERTIFICATE_VERIFY_FAILED] certifica
te verify failed (_ssl.c:547)>

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "D:\Twitch\youtube-dl.py\youtube_dl\YoutubeDL.py", line 312, in extract_i
nfo
ie_result = ie.extract(url)
File "D:\Twitch\youtube-dl.py\youtube_dl\extractor\common.py", line 96, in ext
ract
return self._real_extract(url)
File "D:\Twitch\youtube-dl.py\youtube_dl\extractor\youtube.py", line 550, in _
real_extract
raise ExtractorError(u'Unable to download video webpage: %s' % compat_str(er
r))
youtube_dl.utils.ExtractorError: Unable to download video webpage: <urlopen erro
r [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:547)>

[jaimeMF]

Thanks for the report, the issue is the same as #883.
Until it's fixed there are two solutions: use python 2.7 or add the --no-check-certificate to the command (you can add it in the configuration file to use it always)..

[ledzepi11in]

Thanks. The --no-check-certificate fixed it.