KhanAcademy JSON metadata: HTTP Error 400:

[canavan]

Attempting to download certain videos from khanacademy.org results in a 400 Error:

youtube-dl --verbose http://www.khanacademy.org/cs/phoenix-with-ashes/6746032244260864
[debug] System config: []
[debug] User config: []
[debug] Command-line args: ['--verbose', 'http://www.khanacademy.org/cs/phoenix-with-ashes/6746032244260864']
[debug] Encodings: locale ISO8859-1, fs ISO8859-1, out ISO8859-1, pref ISO8859-1
[debug] youtube-dl version 2014.05.05
[debug] Python version 2.7.6 - IRIX64-6.5-IP35-mips-n32bit-ELF
[debug] Proxy map: {}
[KhanAcademy] 6746032244260864: Downloading topic info
ERROR: Unable to download JSON metadata: HTTP Error 400: Bad Request; 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 "/usr/nekoware/bin/youtube-dl/youtube_dl/extractor/common.py", line 194, in _request_webpage
return self._downloader.urlopen(url_or_request)
File "/usr/nekoware/bin/youtube-dl/youtube_dl/YoutubeDL.py", line 1214, in urlopen
return self._opener.open(req, timeout=self._socket_timeout)
File "/usr/nekoware/lib/python2.7/urllib2.py", line 410, in open
response = meth(req, response)
File "/usr/nekoware/lib/python2.7/urllib2.py", line 523, in http_response
'http', request, response, code, msg, hdrs)
File "/usr/nekoware/lib/python2.7/urllib2.py", line 448, in error
return self._call_chain(_args)
File "/usr/nekoware/lib/python2.7/urllib2.py", line 382, in _call_chain
result = func(_args)
File "/usr/nekoware/lib/python2.7/urllib2.py", line 531, in http_error_default
raise HTTPError(req.get_full_url(), code, msg, hdrs, fp)

[anovicecodemonkey]

I can't see any video on the page.

[canavan]

I have to admint that I didn't check beforehand if there's a video on that page. Indeed, there's none, so let's assume this bug report is about the error message, not the failure to download a non-existant videioo.

[clampak]

I get this error as well. Perhaps youtube-dl should report that no video was found?