Yes, Bruce Witkin is also testifying on Day-19 of Depp and Heard's defamation trial.

The long-time friend and former good pal of Johnny claimed that; even though the actor was jealous of his wife's proximity to other male actors, he never lost his emotional control in front of his ex-wife.

Instead, he would often do drugs with Marilyn Manson. In fact, he was never angry at Amber and was just frustrated with their relationship slowly falling apart as noted in Daily Mail.

Bruce claims that his pal was just confused and sad as to why his marriage was not working and what went wrong. He also stated that he has not witnessed Depp physically hitting or harming the actress.

Johnny Depp's former agent Tracy Jacobs also testified but it was against him and talked more about his career and behaviors on the sets.

She told that the actor's lateness in the Pirates of the Caribbean movie caused chaos on the sets. Not only that, crews were even reluctant to work with him because of his unprofessionalism, led by drug and alcohol use. 

Bruce Witkin's net worth is found to be more than $500,000 as per several sites.

According to Networth Post, his career earnings are estimated to be $900,000. It's to be expected that the record producer and the Owner of Unison Music Witkin might have collected a significant income given over 15 years of professional experience in the music and entertainment field.

Bruce Witkin, who was filmed vaping during the video deposition, also revealed that his friendship with Johnny went through a fire in 2017 when the actor suddenly accused him of betrayal during a Hollywood Vampires show. He even said that they never got to argue or clear up the misunderstanding after Depp claimed that he stabbed the Pirates of the Caribbean actor behind the back.

Though these friend relations fell out, Witkin neither referred to Depp as a violent person nor said the actor ever poured his anger towards Amber Heard. 

As per IMDb, Bruce Witkin is from Music Department and has worked as a composer and producer. However, he has no Wikipedia existence for now.

The composer is known for his performance in Into the Woods, Once Upon a Time in Mexico, Mortdecai, etc. He also has an award dedicated to him in the Independent Filmmakers Showcase IFS Film Festival, US in 2017.