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| # Parses YouTube URLs directly or from iframe code. Handles: | |
| # * Address bar on YouTube url (ex: http://www.youtube.com/watch?v=ZFqlHhCNBOI) | |
| # * Direct http://youtu.be/ url (ex: http://youtu.be/ZFqlHhCNBOI) | |
| # * Full iframe embed code (ex: <iframe src="http://www.youtube.com/embed/ZFqlHhCNBOI">) | |
| # * Old <object> tag embed code (ex: <object><param name="movie" value="http://www.youtube.com/v/ZFqlHhCNBOI">...) | |
| /(youtu\.be\/|youtube\.com\/(watch\?(.*&)?v=|(embed|v)\/))([^\?&"'>]+)/ | |
| $5 #=> the video ID | |
| # test it on Rubular: http://rubular.com/r/eaJeSMkJvo |