I was aksed this question last night during a radio interview. The young lady had sent in a picture & video for a show and wanted to know if on the call back she needed to bring these materials with her.
My advice is, it's better to be overprepared. Bring the picture and video with you. If they ask for it, you will show that you are prepared and professional. If they don't ask for it, then they don't need it.
You will feel more confident going in for an interview or an audition when you are as prepared as possible.
For more tips and articles by top entertainment industry career coach, The Greenlight Coach, visit www.thegreenlightcoach.com