Technology exists to create a fake but realistic Trump "concession" video

When I watched Trump's alleged concession speech I was reminded of recent stories that the technology currently exists to make a fake video of a real person. Did a bit of research and found this article which explains how this works:

"Recent advances in artificial intelligence have made creating convincing fake videos, or deepfakes, of real people possible. While the ethical implications and the creative capabilities of this amazing technology are only beginning to be explored, there are growing concerns that this technology could be used maliciously to ruin reputations and cause extensive damages.

Can you spot a fake video in which a famous person is saying things that are totally untrue? For example, if you are watching a viral video of President Barack Obama, can you tell whether it’s fake or authentic?..."

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