Digital video is a set of binary information that represents video content in compressed or uncompressed format. Thus, it is intrinsically unprotected. In some cases, it needs protection, or it needs to control access under some defined conditions. A digital video may represent a work protected by some copyright laws. Thus, some technical means should enforce these laws. The digital video may have commercial value, which should also be preserved by technical means. Piracy attempts to break these means. We give a brief overview of piracy.