CBS.com's The Late Show with Steven Colbert — Videos cannot be downloaded from specific URL

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• I've verified and I assure that I'm running youtube-dl 2017.08.09

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• 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
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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 ```):

$ youtube-dl -v http://www.cbs.com/shows/the-late-show-with-stephen-colbert/video/
[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: [u'-v', u'http://www.cbs.com/shows/the-late-show-with-stephen-colbert/video/']
[debug] Encodings: locale UTF-8, fs utf-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2017.08.09
[debug] Python version 2.7.10 - Darwin-16.7.0-x86_64-i386-64bit
[debug] exe versions: ffmpeg 3.2.2-tessus, ffprobe 3.2.2, rtmpdump 2.4
[debug] Proxy map: {}
[generic] video: Requesting header
WARNING: Falling back on generic information extractor.
[generic] video: Downloading webpage
[generic] video: Extracting information
ERROR: Unsupported URL: http://www.cbs.com/shows/the-late-show-with-stephen-colbert/video/
Traceback (most recent call last):
  File "/usr/local/bin/youtube-dl/youtube_dl/extractor/generic.py", line 2077, in _real_extract
    doc = compat_etree_fromstring(webpage.encode('utf-8'))
  File "/usr/local/bin/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 "/usr/local/bin/youtube-dl/youtube_dl/compat.py", line 2528, in _XML
    parser.feed(text)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/xml/etree/ElementTree.py", line 1642, in feed
    self._raiseerror(v)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/xml/etree/ElementTree.py", line 1506, in _raiseerror
    raise err
ParseError: not well-formed (invalid token): line 5, column 92
Traceback (most recent call last):
  File "/usr/local/bin/youtube-dl/youtube_dl/YoutubeDL.py", line 776, in extract_info
    ie_result = ie.extract(url)
  File "/usr/local/bin/youtube-dl/youtube_dl/extractor/common.py", line 433, in extract
    ie_result = self._real_extract(url)
  File "/usr/local/bin/youtube-dl/youtube_dl/extractor/generic.py", line 2944, in _real_extract
    raise UnsupportedError(url)
UnsupportedError: Unsupported URL: http://www.cbs.com/shows/the-late-show-with-stephen-colbert/video/

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Description of your issue, suggested solution and other information

Youtube-dl supports downloading episodes of The Late Show with Steven Colbert from CBS.com. Examples of URLs that work include:

http://www.cbs.com/shows/the-late-show-with-stephen-colbert/video/LVgwSwAyjl4ArPOEDsDH4lGhZc7VUk5f/the-late-show-8-10-2017-millie-bobby-brown-jim-jefferies-zeshan-b-/
http://www.cbs.com/shows/the-late-show-with-stephen-colbert/video/2ojGQ6xFhvbsgv1v2SLgh2FoY0XhBKu_/the-late-show-8-9-2017-robert-pattinson-david-tennant-niecy-nash-/
http://www.cbs.com/shows/the-late-show-with-stephen-colbert/video/rN3FHAjaPOwAW_QhnKup6X4T2mLXlAUY/the-late-show-8-8-2017-christoph-waltz-chris-o-dowd-sean-evans-/

However, the URL http://www.cbs.com/shows/the-late-show-with-stephen-colbert/video/ does not work in youtube-dl. When loaded into a web browser, this URL plays the most recent episode of The Late Show. As far as I can tell, this URL is a unique page rather than a redirect, and thus youtube-dl should support it.

Is there any chance this can be fixed? I want to set up a script that automatically downloads the most recent episode every day. I think youtube-dl just needs to be told to use the right extractor.

I don't think this website will work outside of the United States. If there are any international devs who need access, I'd be happy to provide a VPN—please message me privately.

Thanks so much!