AI generated fake videos are better than ever Chris Kleponis/Bloomberg via Getty Images

A fake is only as good as it looks. But while forging a counterfeit handbag or watch takes time and effort, churning out fake videos has become surprisingly easy.

A new system can turn a few simple animated line drawings into realistic fake clips in high definition. The software is open source, meaning that it is available to anyone – and it has reignited concerns that such tools could be used to warp our perception of the world.

The new system was created by researchers at graphics hardware …