Error with arte concert on empty list

[reyman]

As you can see, the trace show an error when parsing these recent concert :

youtube-dl http://concert.arte.tv/fr/melt-2014-moderat --verbose
[debug] System config: []
[debug] User config: []
[debug] Command-line args: ['http://concert.arte.tv/fr/melt-2014-moderat', '--verbose']
[debug] Encodings: locale UTF-8, fs UTF-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2014.07.21
[debug] Python version 2.7.6 - Linux-3.13.0-24-generic-x86_64-with-Ubuntu-14.04-trusty
[debug] Proxy map: {}
[arte.tv:concert] melt-2014-moderat: Downloading webpage
[arte.tv:concert] melt-2014-moderat: Downloading JSON metadata
ERROR: The formats list is empty; 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 "/usr/lib/python2.7/dist-packages/youtube_dl/YoutubeDL.py", line 516, in extract_info
    ie_result = ie.extract(url)
  File "/usr/lib/python2.7/dist-packages/youtube_dl/extractor/common.py", line 169, in extract
    return self._real_extract(url)
  File "/usr/lib/python2.7/dist-packages/youtube_dl/extractor/arte.py", line 77, in _real_extract
    return self._extract_from_webpage(webpage, video_id, lang)
  File "/usr/lib/python2.7/dist-packages/youtube_dl/extractor/arte.py", line 82, in _extract_from_webpage
    return self._extract_from_json_url(json_url, video_id, lang)
  File "/usr/lib/python2.7/dist-packages/youtube_dl/extractor/arte.py", line 120, in _extract_from_json_url
    raise ExtractorError(u'The formats list is empty')
ExtractorError: The formats list is empty; 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.```

[reyman]

It works with youtube-dl http://concert.arte.tv/de/melt-2014-moderat, so there is a problem on langage selection it seems only.

[dstftw]

Thanks for the report, fixed and will be available in the next release of yotutube-dl.