London 2012 opening ceremony TV preview

Where to watch the London 2012 opening ceremony.

The opening ceremony of the London 2012 Olympics is less than 12 hours away. The ceremony itself, named "Isles of Wonder," is expected to be viewed by a billion people around the world. Almost everyone with a television or internet connection across the globe will be witnessing it live, except for those in the United States. 

That's because broadcaster NBC will broadcast it on tape delay for primetime. While broadcasters around the world aim to bring the Olympic experience to their viewers live, NBC cares about securing the largest possible audience at 7:30 ET/PT to ... promote its fall programming lineup.

Elsewhere, Eurosport will be broadcasting the ceremony in 3D, which viewers can only receive if their pay TV provider agrees to carry the 3D feed.