LOS ANGELES — Hollywood's attractive actors fear that artificial intelligence will replace their jobs, but for many performers, that is already a reality. 

From Game of Thrones to the latest Marvel superhero movies, studios that want to save money have long used computer-generated* background figures to reduce the number of actors needed for battle scenes. 

Now the rise of AI means cheaper and more powerful techniques are being explored to create highly elaborate* action scenes, such as car chases and shootouts — without humans. Stunt* work, a time-honored Hollywood tradition that has developed from silent movies through to Tom Cruise's latest Mission Impossible, is at risk. "The technology is getting faster and better, " said Freddy Bouciegues, stunt coordinator for movies such as Free Guy and Terminator: Dark Fate. "It's really a scary time right now. "

Studios are already requiring stunt and background performers to take part in high-tech 3D "body scans（扫描）" on set, often without explaining how or when the images will be used. Advances in AI mean these likenesses could be used to create detailed "digital replicas", which can perform any action or speak any dialogue its creators wish. 

Bouciegues fears producers could use these virtual* image to replace "nondescript" stunt performers, such as those playing actors jumping out of the way of a car chase. 

The lack of promise of the technology company over the future use of AI is one of the major reasons in the current strike* by the Screen Actors Guild, or SAGAFTRA, and Hollywood's writers, who have been on the picket lines for more than 100 days. Last month, SAG-AFTRA warned that studios intend to create realistic digital copies of performers, to use "in any project they want" — all for the payment of one day's work. 

However, the studios doesn't think they have any mistake. They offered rules to person who join in the project, including the right to know and compensation.