5) Do you need to deliver video on demand?
6) How many users do you want to accommodate at any one time?
7) Do you require logging features for billing or other purposes?
To deliver video to the desktop, you can transmit over the corporate Ethernet network, but without any flow control or some sort of traffic management like QoS (quality of service), you'll experience a large number of dropped frames. You also can deliver over the Web from within a plug-in-equipped browser window or from within a separate player application. Both plug-in-equipped browser window apps and separate player apps are dominated by three vendors: Apple Computer, Microsoft and RealNetworks.
If you transmit from within the network, transmission flow control can be handled by the transport protocol. RTP (Real-time Transport Protocol) fills a gap between UDP and TCP protocols to create a framework to easily transmit streamed data. Data can be placed in the transport stream within one of several protocols, including RTSP (Real-time Streaming Protocol) and MMS (Microsoft Media Server), SDP (Session Description Protocol) and HTTP. Some of these can be used in conjunction with one another to enable better transport of the video data.
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