Сабж собсно.

Старый ноутбук на системе сборки enp
Система на t7/branch
Сейчашный dist-upgrade

При попытке скачать простым скачиванием
или получить список форматов, сыпет ошибками:

$ youtube-dl -F http://www.youtube.com/watch?v=vDwsWdcSLBc
[youtube] Setting language
[youtube] vDwsWdcSLBc: Downloading video webpage
[youtube] vDwsWdcSLBc: Downloading video info webpage
[youtube] vDwsWdcSLBc: Extracting video information
Traceback (most recent call last):
  File "/usr/bin/youtube-dl", line 17, in <module>
    youtube_dl.main()
  File "/usr/lib/python2.7/site-packages/youtube_dl/__init__.py", line 540, in main
    _real_main()
  File "/usr/lib/python2.7/site-packages/youtube_dl/__init__.py", line 524, in _real_main
    retcode = fd.download(all_urls)
  File "/usr/lib/python2.7/site-packages/youtube_dl/FileDownloader.py", line 575, in download
    videos = ie.extract(url)
  File "/usr/lib/python2.7/site-packages/youtube_dl/InfoExtractors.py", line 96, in extract
    return self._real_extract(url)
  File "/usr/lib/python2.7/site-packages/youtube_dl/InfoExtractors.py", line 579, in _real_extract
    url_map = dict((ud['itag'][0], ud['url'][0] + '&signature=' + ud['sig'][0]) for ud in url_data)
  File "/usr/lib/python2.7/site-packages/youtube_dl/InfoExtractors.py", line 579, in <genexpr>
    url_map = dict((ud['itag'][0], ud['url'][0] + '&signature=' + ud['sig'][0]) for ud in url_data)
KeyError: 'sig'


$ rpm -qa --last youtube-dl
youtube-dl-2013.04.03-alt2                    Вс 20 июл 2014 05:35:44

$ apt-repo
rpm  http://ftp.altlinux.org/pub/distributions/ALTLinux/t7/branch i586 classic
rpm  http://ftp.altlinux.org/pub/distributions/ALTLinux/t7/branch noarch classic

$ cat /etc/altlinux-release 
ALT Linux t7 (Trientalis)