Just a note, in the FAQ[1] it states "distribution packages are often outdated". There are (very simple) cURL/wget instructions in the repo's README[2]. Then you can update with:

   sudo youtube-dl -U

There's also an .exe for Windows as well as pip, Homebrew, and MacPorts packages.

[1] https://github.com/rg3/youtube-dl/blob/master/README.md#how-...

[2] https://github.com/rg3/youtube-dl/blob/master/README.md#inst...