"ERROR: unable to download video"

[goodevilgenius]

Tried to download a video which failed with an ambiguous error message.

[jaimeMF]

As the error message probably says, please post the output if you ran it appending the --verbose option.

[goodevilgenius]

I see this is likely a dupe of #1018

Here's some more info. Did youtube-dl --verbose --restrict-filenames --write-info-json -o "/home/drj/MyFiles/Videos/WebShows/YouTube/%(uploader)s/%(title)s-%(id)s.%(ext)s" 'http://www.youtube.com/watch?v=1sa9qeV6T0o'

Got this output:

[debug] System config: []
[debug] User config: []
[debug] Command-line args: ['--verbose', '--restrict-filenames', '--write-info-json', '-o', '/home/drj/MyFiles/Videos/WebShows/YouTube/%(uploader)s/%(title)s-%(id)s.%(ext)s', 'http://www.youtube.com/watch?v=1sa9qeV6T0o']
[debug] youtube-dl version 2013.07.18
[debug] Python version 2.7.3 - Linux-3.2.0-48-generic-i686-with-Ubuntu-12.04-precise
[debug] Proxy map: {}
[youtube] Setting language
[youtube] 1sa9qeV6T0o: Downloading video webpage
[youtube] 1sa9qeV6T0o: Downloading video info webpage
[youtube] 1sa9qeV6T0o: Extracting video information
[youtube] 1sa9qeV6T0o: Encrypted signatures detected.
[youtube] encrypted signature length 85 (42.42), itag 46, html5 player vflSAFCP9
[youtube] encrypted signature length 85 (42.42), itag 37, html5 player vflSAFCP9
[youtube] encrypted signature length 85 (42.42), itag 45, html5 player vflSAFCP9
[youtube] encrypted signature length 85 (42.42), itag 22, html5 player vflSAFCP9
[youtube] encrypted signature length 85 (42.42), itag 44, html5 player vflSAFCP9
[youtube] encrypted signature length 85 (42.42), itag 35, html5 player vflSAFCP9
[youtube] encrypted signature length 85 (42.42), itag 43, html5 player vflSAFCP9
[youtube] encrypted signature length 85 (42.42), itag 34, html5 player vflSAFCP9
[youtube] encrypted signature length 85 (42.42), itag 18, html5 player vflSAFCP9
[youtube] encrypted signature length 85 (42.42), itag 5, html5 player vflSAFCP9
[youtube] encrypted signature length 85 (42.42), itag 36, html5 player vflSAFCP9
[youtube] encrypted signature length 85 (42.42), itag 17, html5 player vflSAFCP9
[info] Video description metadata as JSON to: /home/drj/MyFiles/Videos/WebShows/YouTube/B.o.B/B.o.B_-_Both_of_Us_ft._Taylor_Swift_Official_Video-1sa9qeV6T0o.mp4.info.json
ERROR: unable to download video
Traceback (most recent call last):
File "/usr/bin/youtube-dl/youtube_dl/YoutubeDL.py", line 573, in download
videos = self.extract_info(url)
File "/usr/bin/youtube-dl/youtube_dl/YoutubeDL.py", line 327, in extract_info
return self.process_ie_result(ie_result, download=download)
File "/usr/bin/youtube-dl/youtube_dl/YoutubeDL.py", line 410, in process_ie_result
for r in ie_result['entries']
File "/usr/bin/youtube-dl/youtube_dl/YoutubeDL.py", line 357, in process_ie_result
self.process_info(ie_result)
File "/usr/bin/youtube-dl/youtube_dl/YoutubeDL.py", line 550, in process_info
raise UnavailableVideoError()
UnavailableVideoError

I'm on the most recent version.

And, by the way, the output did not suggest that I run it with --verbose.

[jaimeMF]

Okay, duplicate of #1080
You are right, the error message didn't remind to run it again with --verbose, that's my fault, sorry and thanks for reporting.