Gamespot has switched to f4m downloads

[jaimeMF]

youtube-dl 'http://www.gamespot.com/videos/arma-3-community-guide-sitrep-i/2300-6410818/'
[debug] System config: []
[debug] User config: ['--keep-video', '--verbose', '--write-info-json', '--write-thumbnail']
[debug] Command-line args: ['http://www.gamespot.com/videos/arma-3-community-guide-sitrep-i/2300-6410818/']
[debug] youtube-dl version 2013.10.09
[debug] Git HEAD: 63da13e
[debug] Python version 2.7.5 - Darwin-11.4.2-x86_64-i386-64bit
[debug] Proxy map: {}
[GameSpot] 6410818: Downloading webpage
ERROR: Unable to extract video id; 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.
Traceback (most recent call last):
  File "~/proyectos/youtube-dl/youtube-dl/youtube_dl/YoutubeDL.py", line 348, in extract_info
    ie_result = ie.extract(url)
  File "~/proyectos/youtube-dl/youtube-dl/youtube_dl/extractor/common.py", line 117, in extract
    return self._real_extract(url)
  File "~/proyectos/youtube-dl/youtube-dl/youtube_dl/extractor/gamespot.py", line 29, in _real_extract
    webpage, 'video id')
  File "~/proyectos/youtube-dl/youtube-dl/youtube_dl/extractor/common.py", line 261, in _html_search_regex
    res = self._search_regex(pattern, string, name, default, fatal, flags)
  File "~/proyectos/youtube-dl/youtube-dl/youtube_dl/extractor/common.py", line 251, in _search_regex
    raise ExtractorError(u'Unable to extract %s' % _name)
ExtractorError: Unable to extract video id; 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.

The site now uses the f4m system (the manifest can be extracted from the webpage), either wait until we support f4m downloads or find an alternative way , maybe looking for mobile support.