You can request a restraining order from the court, preventing them from posting the videos on the internet. It depends in part on how the videos or pictures were taken. If a boyfriend, girlfriend, or spouse is threatening to post them, you could request a domestic violence restraining order. This might be the fastest and least expensive solution. If it was a video taken without your knowledge, it may violate California Penal Code section 632. Otherwise, you might sue for invasion of privacy and request an injunction.