Story highlights Australia's deputy PM Barnaby Joyce advises Depp to reshoot apology video with "a little gusto"

Depp and wife Amber Heard brought pet dogs into Australia without properly declaring them

Joyce warned them at the time they had 72 hours to remove the dogs before the pets were destroyed

(CNN) Australia's deputy prime minister -- who once threatened to euthanize dogs belonging to Johnny Depp and Amber Heard -- has mocked the actors' videotaped apology for failing to declare the Yorkshire terriers when entering the country last year.

Agriculture Minister Barnaby Joyce told Australian public broadcaster ABC that Depp "looked like he was auditioning for the Godfather" in the somber apology video, but said he did not "think he'll get an Academy Award for his performance."

He doubled down on his criticism in an interview with CNN affiliate Channel 7's "Sunrise" program, advising the Academy Award-nominated actor to "do it again" with "a little gusto."

The apology video by the Hollywood couple was played to a Queensland court on Monday as Heard appeared over the incident.

Heard, an actress who has appeared in films including "Magic Mike XXL" and "The Danish Girl," was spared a conviction when she pleaded guilty to knowingly producing a false or misleading document, while two other charges of illegally importing her dogs were dismissed.