Support UK TV channel S4C, relative of UK's Channel 4.

[RalphCorderoy]

Make sure you are using the latest version: run youtube-dl --version and ensure your version is 2017.09.02. If it's not, read this FAQ entry and update. Issues with outdated version will be rejected.

• I've verified and I assure that I'm running youtube-dl 2017.09.02

Before submitting an issue make sure you have:

• At least skimmed through the README, most notably the FAQ and BUGS sections
• 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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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 the -v flag to your command line you run youtube-dl with (youtube-dl -v <your command line>), copy the whole output and insert it here. It should look similar to one below (replace it with your log inserted between triple ```):

[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: [u'-v', u'http://www.s4c.cymru/clic/e_level2.shtml?programme_id=540283584']
[debug] Encodings: locale UTF-8, fs UTF-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2017.09.02
[debug] Python version 2.7.9 - Linux-3.19.0-84-generic-x86_64-with-Ubuntu-15.04-vivid
[debug] exe versions: ffmpeg 2.5.10-0ubuntu0.15.04.1, ffprobe 2.5.10-0ubuntu0.15.04.1, rtmpdump 2.4
[debug] Proxy map: {}
[generic] e_level2: Requesting header
WARNING: Falling back on generic information extractor.
[generic] e_level2: Downloading webpage
[generic] e_level2: Extracting information
[generic] e_level2: Downloading m3u8 information
WARNING: Failed to download m3u8 information: <urlopen error [Errno 110] Connection timed out>
ERROR: No video formats found; 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.
Traceback (most recent call last):
  File "./youtube-dl/youtube_dl/extractor/generic.py", line 2116, in _real_extract
    doc = compat_etree_fromstring(webpage.encode('utf-8'))
  File "./youtube-dl/youtube_dl/compat.py", line 2539, in compat_etree_fromstring
    doc = _XML(text, parser=etree.XMLParser(target=_TreeBuilder(element_factory=_element_factory)))
  File "./youtube-dl/youtube_dl/compat.py", line 2528, 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: syntax error: line 1, column 0
Traceback (most recent call last):
  File "./youtube-dl/youtube_dl/YoutubeDL.py", line 776, in extract_info
    ie_result = ie.extract(url)
  File "./youtube-dl/youtube_dl/extractor/common.py", line 434, in extract
    ie_result = self._real_extract(url)
  File "./youtube-dl/youtube_dl/extractor/generic.py", line 2882, in _real_extract
    self._sort_formats(entry['formats'])
  File "./youtube-dl/youtube_dl/extractor/common.py", line 1072, in _sort_formats
    raise ExtractorError('No video formats found')
ExtractorError: No video formats found; 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.

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If the purpose of this issue is a site support request please provide all kinds of example URLs support for which should be included (replace following example URLs by yours):

• Single video: http://www.s4c.cymru/clic/e_level2.shtml?programme_id=540283584

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Description of your issue, suggested solution and other information

S4C is a UK TV channel from the same company as Channel 4, but with Welsh-language programmes. I suspect they use the same method of providing programmes to watch online.

[candroo]

S4C is completely separate to Channel 4. The services are not related in any way.

[DrHyde]

At least some S4C content is available via the BBC's iPlayer, and so get_iplayer can be used.