rg3/youtube-dl — pull request #801 by expleo (2013-04-24 12:05:08+00:00)
Title: Adds support for passing a referer.

I noticed that Vimeo supports embedding videos that only can be accessed when watched via a specified domain. To enable users to download these videos, I added referer passing to youtube-dl. This way you can pass the required referer url to youtube-dl and the video download will succeed.