At the World Artificial Intelligence Conference in Shanghai this month, start-up founder Qu Dongqi showed off a video he had recently posted online. It displayed an old photograph of a woman with two toddlers. Then the photo sprang to life as the woman lifted the toddlers up in her arms and they laughed with surprise. The technology was reminiscent of a video generator, called Sora, that the American start-up OpenAI unveiled this year. “My American friends still can’t use Sora,” Mr. Qu said.

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Persons: Qu Dongqi, Sora, OpenAI, “, ” Mr, Qu, ” Organizations: Artificial Intelligence Locations: Shanghai