Failed to download from youtube

[tbrodel]

Trying to download mp4 from youtube, here's the output with --verbose flag

[toby@bunyip Videos]$ youtube-dl -f mp4 --verbose https://www.youtube.com/results?search_query=bill%20nye%20ken%20ham%20debate
[debug] System config: ['--prefer-free-formats']
[debug] User config: []
[debug] Command-line args: ['-f', 'mp4', '--verbose', 'https://www.youtube.com/results?search_query=bill%20nye%20ken%20ham%20debate']
[debug] Encodings: locale 'UTF-8', fs 'UTF-8', out 'UTF-8', pref: 'UTF-8'
[debug] youtube-dl version 2014.02.06.3
[debug] Python version 2.7.5 - Linux-3.12.9-301.fc20.x86_64-x86_64-with-fedora-20-Heisenbug
[debug] Proxy map: {}
[download] Downloading playlist: results
[youtube:user] results: Downloading video ids from 1 to 51
ERROR: Unable to download webpage: HTTP Error 403: Forbidden; please report this issue on https://yt-dl.org/bug . Be sure to call youtube-dl with the --verbose flag and include its complete output. Make sure you are using the latest version; type youtube-dl -U to update.
File "/bin/youtube-dl/youtube_dl/extractor/common.py", line 191, in _request_webpage
return self._downloader.urlopen(url_or_request)
File "/bin/youtube-dl/youtube_dl/YoutubeDL.py", line 1157, in urlopen
return self._opener.open(req)
File "/usr/lib64/python2.7/urllib2.py", line 410, in open
response = meth(req, response)
File "/usr/lib64/python2.7/urllib2.py", line 523, in http_response
'http', request, response, code, msg, hdrs)
File "/usr/lib64/python2.7/urllib2.py", line 448, in error
return self._call_chain(_args)
File "/usr/lib64/python2.7/urllib2.py", line 382, in _call_chain
result = func(_args)
File "/usr/lib64/python2.7/urllib2.py", line 531, in http_error_default
raise HTTPError(req.get_full_url(), code, msg, hdrs, fp)

[jaimeMF]

You can run youtube-dl 'ytsearch10:bill nye ken ham debate' to get the 10 first videos of the search query. We could probably recognize search urls.