Describes general requirements on video transmission. In this document a detailed specification on analog video transmission over different media including signal and performance requirements is already defined. For the growing number of surveillance applications based on IP video transmission the requirements are defined in 2 parts: Part-1 covers in the following chapters the general requirements for video transmissions on performance, security and conformance to basic IP connectivity, based on available, well-known, international standards. In areas where more detailed IP requirements are necessary additional specifications are given, in order to reach compatibility. In part-1 no detail and special CCTV protocols are defined. In part-2, a detailed video IP protocol, messages and commands on top of the general connectivity and performance requirements of part-1 are defined. Part-2 defines an IP protocol for full interoperability (e.g. PTZ control, eventing, etc.) of video transmission devices used in surveillance applications.