new site: webstream.eu requested

[ghost]

• I've verified and I assure that I'm running youtube-dl 2016.08.12

Before submitting an issue make sure you have:

• At least skimmed through [README](https://github.com/rg3/youtube-dl/blob/master
• 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 -s -v https://www.webstream.eu/channel/isaacandmeikefreiburg2016
[debug] System config: []
[debug] User config: [u'-t', u'-i', u'-x', u'--no-mtime', u'--audio-format=mp3', u'--audio-quality=128K']
[debug] Command-line args: [u'-s', u'-v', u'https://www.webstream.eu/channel/isaacandmeikefreiburg2016']
[debug] Encodings: locale UTF-8, fs UTF-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2016.08.12
[debug] Python version 2.7.6 - Linux-3.16.0-77-generic-x86_64-with-Ubuntu-14.04-trusty
[debug] exe versions: avconv 9.18-6, avprobe 9.18-6, rtmpdump 2.4
[debug] Proxy map: {}
[generic] isaacandmeikefreiburg2016: Requesting header
WARNING: Falling back on generic information extractor.
[generic] isaacandmeikefreiburg2016: Downloading webpage
[generic] isaacandmeikefreiburg2016: Extracting information
ERROR: Unsupported URL: https://www.webstream.eu/channel/isaacandmeikefreiburg2016
Traceback (most recent call last):
  File "/usr/local/sbin/youtube-dl/youtube_dl/extractor/generic.py", line 1610, in _real_extract
    doc = compat_etree_fromstring(webpage.encode('utf-8'))
  File "/usr/local/sbin/youtube-dl/youtube_dl/compat.py", line 2525, in compat_etree_fromstring
    doc = _XML(text, parser=etree.XMLParser(target=_TreeBuilder(element_factory=_element_factory)))
  File "/usr/local/sbin/youtube-dl/youtube_dl/compat.py", line 2514, in _XML
    parser.feed(text)
  File "/usr/lib/python2.7/xml/etree/ElementTree.py", line 1642, in feed
    self._raiseerror(v)
  File "/usr/lib/python2.7/xml/etree/ElementTree.py", line 1506, in _raiseerror
    raise err
ParseError: not well-formed (invalid token): line 11, column 18
Traceback (most recent call last):
  File "/usr/local/sbin/youtube-dl/youtube_dl/YoutubeDL.py", line 691, in extract_info
    ie_result = ie.extract(url)
  File "/usr/local/sbin/youtube-dl/youtube_dl/extractor/common.py", line 347, in extract
    return self._real_extract(url)
  File "/usr/local/sbin/youtube-dl/youtube_dl/extractor/generic.py", line 2344, in _real_extract
    raise UnsupportedError(url)
UnsupportedError: Unsupported URL: https://www.webstream.eu/channel/isaacandmeikefreiburg2016

### Description of your *issue*, suggested solution and other information

webstream.eu often has more than one video, almost like a playlist, none of which i was able to get, and i dont have the skills necessary, to even understand the issue further. Just wanted to add, the website in question is only ONE EXAMPLE of a whole lot, i am interested to download from.