Deaf music fans have pointed out a number of embarassing errors in Paul McCartney's recent sign language 'My Valentine' video, which stars Johnny Depp and Natalie Portman.

The video, which was premiered in LA last weekend, is shot in black and white and sees the Hollywood A-listers recite the lyrics to the track in sign language. However, experts have quickly noticed errors in their performances.

Instead of the word 'appear', Portman signs the word 'tampon' while Depp confuses 'valentine' for 'enemy'.

The British Deaf Association continue to support the video, with a spokesperson saying: "It’s great that famous people such as Johnny Depp and Natalie Portman are highlighting the use of sign language. Their use of it is more a poetic expression.

"The sign for tampon does seem to come up from both Johnny and Natalie, which causes some confusion, especially as American and British sign languages are different.

"It would have been nice if genuine deaf people had been used. But it’s still great."

Watch Paul McCartney's 'My Valentine' video below.