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host@user:~$ youtube-dl -F "https://www.youtube.com/watch?v=Swt81Go-XKY" --verbose
[debug] System config: []
[debug] User config: []
[debug] Command-line args: [u'-F', u'https://www.youtube.com/watch?v=Swt81Go-XKY', u'--verbose']
[debug] Encodings: locale UTF-8, fs UTF-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2016.02.22
[debug] Python version 2.7.12 - Linux-4.15.0-47-generic-x86_64-with-Ubuntu-16.04-xenial
[debug] exe versions: ffmpeg 2.8.15-0ubuntu0.16.04.1, ffprobe 2.8.15-0ubuntu0.16.04.1, rtmpdump 2.4
[debug] Proxy map: {}
[youtube] Swt81Go-XKY: Downloading webpage
[youtube] Swt81Go-XKY: Downloading video info webpage
ERROR: Swt81Go-XKY: "token" parameter not in video info for unknown reason; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; see https://yt-dl.org/update on how to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
Traceback (most recent call last):
File "/usr/lib/python2.7/dist-packages/youtube_dl/YoutubeDL.py", line 666, in extract_info
ie_result = ie.extract(url)
File "/usr/lib/python2.7/dist-packages/youtube_dl/extractor/common.py", line 316, in extract
return self._real_extract(url)
File "/usr/lib/python2.7/dist-packages/youtube_dl/extractor/youtube.py", line 1175, in _real_extract
video_id=video_id)
ExtractorError: Swt81Go-XKY: "token" parameter not in video info for unknown reason; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; see https://yt-dl.org/update on how to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.