http://www.france3.fr/emissions/pieces-a-conviction/diffusions/04-12-2013_154706

[Rudloff]

[debug] System config: []
[debug] User config: []
[debug] Command-line args: ['http://www.france3.fr/emissions/pieces-a-conviction/diffusions/04-12-2013_154706', '-v']
[debug] youtube-dl version 2013.12.04
[debug] Python version 2.7.3 - Linux-3.2.0-4-amd64-x86_64-with-debian-7.2
[debug] Proxy map: {}
WARNING: Falling back on generic information extractor.
[generic] 04-12-2013_154706: Downloading webpage
[generic] 04-12-2013_154706: Extracting information
ERROR: Unsupported URL: http://www.france3.fr/emissions/pieces-a-conviction/diffusions/04-12-2013_154706; 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/bin/youtube-dl/youtube_dl/YoutubeDL.py", line 429, in extract_info
    ie_result = ie.extract(url)
  File "/usr/bin/youtube-dl/youtube_dl/extractor/common.py", line 131, in extract
    return self._real_extract(url)
  File "/usr/bin/youtube-dl/youtube_dl/extractor/generic.py", line 236, in _real_extract
    raise ExtractorError(u'Unsupported URL: %s' % url)
ExtractorError: Unsupported URL: http://www.france3.fr/emissions/pieces-a-conviction/diffusions/04-12-2013_154706; 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.

[jaimeMF]

It should work now. I haven't tested with the same video you posted because it's blocked from my location, other videos work fine. If you could check it, it would be great.
Thanks for the report.

[Rudloff]

Yes, it works. Thanks !