Janis Spogis and his team at their offices in Riga
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How extreme sports inspired a foldable drone

10 August 2014 Last updated at 23:35 BST

A shared passion for extreme sports led two Latvian entrepreneurs to create a foldable drone that could follow the action.

Before they started, their friends kept telling them that there was "no drone on the market which flies itself and can film us doing stunts".

So sports enthusiasts Janis Spogis and Edgars Rozentals decided to develop one.

Now, they've turned their product into a million dollar start-up.