“Walking background” and “human props” are two of the gentle and tired jokes used to describe the role of the film and television extra, usually by extras themselves, but the description is entirely appropriate. Extras aren’t supposed to say anything during a take, for as the saying goes, you aren’t being paid to talk.
Can I wear jeans to an audition?
You don’t need to dress like you’re going in for a corporate interview here. Your clothes shouldn’t be a wrinkled mess, but you also shouldn’t be wearing business attire to an audition. A good pair of jeans can go a long way, and it’s worth investing in a pair for auditions alone.