Los Angeles (WEHT) The Oscars are this weekend, and besides the more recognizable categories of best actor and best director, there are many talented people behind the scenes of the movies we saw.

Pablo Helman is the visual effects supervisor behind ‘The Irishman’s’ age-reducing technology.

Director Martin Scorsese, and one of the film’s stars, Robert De Niro, told Pablo they didn’t want to use any facial markers, which track an actor’s movement into a digital database, but can be distracting on set. So, Pablo had to figure out a way around it.

“I immediately knew that if we could come up with a way for the actors to not wear markers, that was going to change the industry.”

For the set, Pablo’s team created a special camera rig using two “witness” cameras on the sides of the main lens to capture the performance from different angles, and with infrared lighting.

Then for post production, they had to create the first-of-its-kind software to de-age the actors.

“I mean it’s the kind of stuff I’ve been waiting for my whole professional life.”

Other films, like Bombshell, required the actors to transform on set.

Makeup artist Kazu Hiro turned actress Charlize Theron into news personality Megyn Kelly using prosthetics, including fake eyelids.

“The trickiest part was the eyelid piece. Because it’s delicate and it has to move with her and she has to act with it.”

Hiro said all the subtle pieces, like 3-d printed nose plugs to create wider nostrils, helped morph star actors into well-known public figures.

“There’s a big responsibility to change her face to someone else… as soon as we started to talk every idea was spinning in my head.”

The 92nd Academy Awards airs live this Sunday from Dolby Theatre in LA. It starts at 7 p.m..

Join Eyewitness News Brad Byrd and our film critic Jim Hunter following the show for the full breakdown of the major awards.

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(This story was originally published on Feb. 6, 2020)