A researcher who created a fake video of President Obama has defended his invention at the latest TED talks.
The clip shows a computer-generated version of the former US leader mapped to fit an audio recording. Experts have warned the tech involved could spark a "political crisis".
Dr Supasorn Suwajanakorn acknowledged that there was a "potential for misuse".
But, at the Vancouver event, he added the tech could be a force for good.
The computer engineer is now employed by Google's Brain division. He is also working on a tool to detect fake videos and photos on behalf of the AI Foundation.
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