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Media regulator Ofcom has decided not to take any action over Channel 4's use of a "deepfaked" video of the Queen.

The "alternative Christmas message" attracted 354 complaints about decency after it aired on Christmas Day.

It showed an AI-generated version of the Queen, who made jokes about the Royal Family and the prime minister, and danced on top of a table.

But after assessing things, Ofcom decided not to pursue the complaints about disrespecting the monarch.

"In our view, Channel 4 made clear that the images were deliberately manipulated as a device to question societal trust in what we see online," a spokeswoman for the regulator said.

"We also consider that the satirical tone of the film was in keeping with audience expectations of this broadcaster," it added.

That decision is similar to Channel 4's own defence of the satire, in which it argued that the parody left viewers "in no doubt that it was not real".

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It also argued the message of the video as a whole was a warning about the importance of trust, and how easily convincing fake images and video can be created – even uploading a behind-the-scenes video about its creation.

After airing on national television in the UK, the video has spread widely online, racking up nearly two million views on YouTube alone.

It has not, however, been universally popular – on top of the formal complaints to Ofcom, it has a poor ratio of likes-to-dislikes on YouTube – with more than 19,000 likes, but nearly 5,000 dislikes.