Virtual reality - using technology to immerse yourself in an artificially created world - has been decades in the making.

Some of the latest headsets can now transport you away to far off shores or put you in the middle of a film scene.

The BBC's North America Technology Correspondent Richard Taylor visited one Silicon Valley start-up to try out the latest in virtual reality and find out how 3D artificial worlds are created.

Watch more clips on the Click website. If you are in the UK you can watch the whole programme on BBC iPlayer.