RegEx pattern to get the YouTube video ID from any YouTube URL

Question

Let\'s take these URLs as an example:

1. http://www.youtube.com/watch?v=8GqqjVXhfMU&feature=youtube_gdata_player
2. http://www.youtube.com/watch?v=8Gqqj

Answer 1

SOLUTION for any YOUTUBE LINK:

http://youtube.com/v/dQw4w9WgXcQ
http://youtube.com/watch?v=dQw4w9WgXcQ
http://www.youtube.com/watch?feature=player&v=dQw4w9WgXcQ&var2=bla
http://youtu.be/dQw4w9WgXcQ

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https://stackoverflow.com/a/20614061/2165415