如何在下载视频时修复错误

Question

当我试图下载一个视频时，会发现一个错误：

youtube-dl http://youtu.be/My2FRPA3Gf8：

[youtube] Setting language
[youtube] My2FRPA3Gf8: Downloading video webpage
[youtube] My2FRPA3Gf8: Downloading video info webpage
[youtube] My2FRPA3Gf8: Extracting video information
[youtube] My2FRPA3Gf8: Encrypted signatures detected.

ERROR: unable to download video

Answer 1

你使用的是一个过时的youtube-dl版本。由于YouTube定期更改界面，youtube-dl有自己的更新机制。类型

sudo youtube-dl -U

来更新。如果这不起作用，可以在youtube-dl项目上随意使用提出一个错误。使用-v调用youtube-dl时，不要忘记包含完整的输出，如下所示：

[debug] System config: []
[debug] User config: []
[debug] Command-line args: ['-v', 'http://youtu.be/My2FRPA3Gf8']
[debug] Encodings: locale 'UTF-8', fs 'UTF-8', out 'UTF-8', pref: 'UTF-8'
[debug] youtube-dl version 2014.01.27.2
[debug] Python version 2.6.6 - Linux-2.6.32-274.7.1.el5.028stab095.1-x86_64-with-debian-6.0.8
[debug] Proxy map: {}
[youtube] Setting language
[youtube] My2FRPA3Gf8: Downloading webpage
[youtube] My2FRPA3Gf8: Downloading video info webpage
[youtube] My2FRPA3Gf8: Extracting video information
[youtube] My2FRPA3Gf8: Encrypted signatures detected.
[youtube] encrypted signature length 85 (44.40), itag 22, html5 player ima-en_US-vflkClbFb
[youtube] encrypted signature length 85 (44.40), itag 43, html5 player ima-en_US-vflkClbFb
[youtube] encrypted signature length 85 (44.40), itag 18, html5 player ima-en_US-vflkClbFb
[youtube] encrypted signature length 85 (44.40), itag 5, html5 player ima-en_US-vflkClbFb
[youtube] encrypted signature length 85 (44.40), itag 36, html5 player ima-en_US-vflkClbFb
[youtube] encrypted signature length 85 (44.40), itag 17, html5 player ima-en_US-vflkClbFb
[youtube] encrypted signature length 84 (41.42), itag 137, html5 player ima-en_US-vflkClbFb
[youtube] My2FRPA3Gf8: Downloading js player vflkClbFb
[youtube] encrypted signature length 84 (41.42), itag 136, html5 player ima-en_US-vflkClbFb
[youtube] encrypted signature length 84 (41.42), itag 135, html5 player ima-en_US-vflkClbFb
[youtube] encrypted signature length 84 (41.42), itag 134, html5 player ima-en_US-vflkClbFb
[youtube] encrypted signature length 84 (41.42), itag 133, html5 player ima-en_US-vflkClbFb
[youtube] encrypted signature length 84 (41.42), itag 160, html5 player ima-en_US-vflkClbFb
[youtube] encrypted signature length 84 (41.42), itag 140, html5 player ima-en_US-vflkClbFb
[youtube] encrypted signature length 84 (41.42), itag 171, html5 player ima-en_US-vflkClbFb
[youtube] encrypted signature length 85 (44.40), itag 137, html5 player ima-en_US-vflkClbFb
[youtube] encrypted signature length 85 (44.40), itag 136, html5 player ima-en_US-vflkClbFb
[youtube] encrypted signature length 85 (44.40), itag 135, html5 player ima-en_US-vflkClbFb
[youtube] encrypted signature length 85 (44.40), itag 134, html5 player ima-en_US-vflkClbFb
[youtube] encrypted signature length 85 (44.40), itag 133, html5 player ima-en_US-vflkClbFb
[youtube] encrypted signature length 85 (44.40), itag 160, html5 player ima-en_US-vflkClbFb
[youtube] encrypted signature length 85 (44.40), itag 140, html5 player ima-en_US-vflkClbFb
[youtube] encrypted signature length 85 (44.40), itag 171, html5 player ima-en_US-vflkClbFb
[download] Destination: Miley Cyrus - Wrecking Ball-My2FRPA3Gf8.mp4
[download] 100% of 40.76MiB in 00:04

Answer 2

尝试使用显示在网页浏览器地址栏上的链接下载视频.这个职位可能会帮助我们了解更多。

youtube-dl http://www.youtube.com/watch?v=2leg8mUE9rs而不是你试过的东西

Answer 3

尝试更新它：

sudo youtube-dl -U

应该能解决你的问题。