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Professional video over IP systems use some existing standard video codec to reduce the program material to a bitstream (e.g., an MPEG transport stream), and then use an Internet Protocol (IP) network to carry that bitstream encapsulated in a stream of IP packets.
The Real-time Transport Protocol (RTP) is a network protocol for delivering audio and video over IP networks.RTP is used in communication and entertainment systems that involve streaming media, such as telephony, video teleconference applications including WebRTC, television services and web-based push-to-talk features.
IP cameras or network cameras are digital video cameras, plus an embedded video server having an IP address, capable of streaming the video (and sometimes, even audio). [3] Because network cameras are embedded devices, and do not need to output an analogue signal, resolutions higher than closed-circuit television 'CCTV' analogue cameras are ...
An Internet Protocol camera, or IP camera, is a type of digital video camera that receives control data and sends image data via an IP network. They are commonly used for surveillance , but, unlike analog closed-circuit television (CCTV) cameras, they require no local recording device, only a local area network .
Because an IP Video server uses IP protocols, it can stream video over any IP-compatible network, including via a modem for access over a phone or ISDN connection. With the use of a video server attached to an analog camera, the video from an existing surveillance system can be converted and networked into a new IP surveillance system.
Industrial video surveillance systems use network video recorders to support IP cameras. These devices are responsible for the recording, storage, video stream processing, and alarm management. Since 2008, IP video surveillance manufacturers can use a standardized network interface to support compatibility between systems. [161]
IP video codecs are used widely in security and broadcast applications to send video between two locations. Video codecs use compression algorithms to send good video quality at substantially lower bit rates than uncompressed signals. Broadcast applications often use MPEG-2 and H.264/MPEG-4 AVC standards for video
The Secure Real-time Transport Protocol (SRTP) is a profile for Real-time Transport Protocol (RTP) intended to provide encryption, message authentication and integrity, and replay attack protection to the RTP data in both unicast and multicast applications.