the transport protocol combination

the transport protocol combination
     The IP Camera tend applications RTSP, RTP, RTCP, HTTP, UDP, TCP protocol different combinations to transmit real-time audio and video streaming. Common agreement is set out as follows.
    RTP + RTSP protocol combination, this protocol combinations (RTP can use TCP, UDP protocol encapsulation, RTSP TCP protocol encapsulation), real-time audio and video in a normal network environment, you can ensure that the client browser, Network Camera manufacturers often recommend using this protocol combinations. Some network devices often support RTP + RTSP multicast mode.
    RTP / RTSP protocol combination, RTP packet encapsulated into RTSP packets, some network firewalls only allow RTSP protocol packet through. IP Camera also provide real-time audio and video RTP protocol. This combination in no way increases the complexity of the network load and client management system.
    RTP / RTSP / HTTP protocol combinations, an increase in the RTP / RTSP and the data on the basis of the HTTP package, the combination of this Agreement in order to adapt to the network firewall only allows the use of the HTTP protocol network environment. Although the network load is increased, but the Network Camera can be adapted to the more complex Internet environment.
    UDP protocol (TCP), a number of IP Camera in order to adapt to the poor condition of the domestic network bandwidth, there is no use of RTP + RTSP application layer protocol encapsulated audio and video data, the audio and video stream using only UDP or TCP transport layer protocol encapsulation. So that the audio and video stream you can use a small amount of network bandwidth to transmit streaming media. The combination of this Agreement can also provide similar RTP + RTSP Advanced features, but can not use network routing equipment based on RTP + RTSP combination optimization features.
    UDP (TCP) / HTTP protocol combinations, audio and video streaming data encapsulated into HTTP data packet, and then use UDP (TCP) protocol transmitted to the client. This agreement can be adapted to the complexity of the Internet environment, can penetrate most network firewall.
    The combination of a variety of transport layer protocols to ensure the reliability of real-time transmission of audio and video and PTZ data, Network Camera built-in processor computing capacity constraints, resulting in the limited number of concurrent access users. Often can not meet the concurrent access demanding applications, IP Camera often have multicast network transmission equipment in response to more concurrent access requirements. Some IP Camera client software is powerful, data forwarding mechanism to act as can respond more concurrent access to the user's "virtual Network Camera, this approach is adapted to adapt PTZ network camera. Construction of large-scale digital video surveillance network is important.
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