Network Streaming Protocols And Implementation

With the popularization of network and rapid development of broadbandin recent years, network multimedia technology is developing greatly which ishighly strict with network band. Especially the development and applicationbased on the streaming technology is becoming one hotspot. Broadbandservice On Demand (BOD) is a new rising way of media data transportation,which is the intersubjective and omnifarious product of computer science,multimedia technology, network communication, TV technology and digitalcompression. The essence of BOD is that users can actively get themultimedia information according to the needs of themselves. The biggestdifference is that BOD is active and selective compared with the traditionalinformation promulgation. This kind of transportation way becomes more andmore fit for the consumers'further demand about information resources at thistime. It can be predicted that BOD is the main exhibition way in futureinformation attainment and audio&video multimedia and will surely have asplendid future.Real time streaming technology takes the form of "playing whiledownloading". The clients can begin to appreciate the movies after bufferingfor only a few seconds. And also they can pause, seek and stop the movies asthey want. Currently the popular players include windows media player, realplayer and QuickTime. The technology used in them is mature enough andhave realized the foundational functions. But most of them take UDP as theway of data transportation. When the multimedia data should be transportedthrough the firewall or proxy servers, the effect will be bad. What's more,they can't satisfy the consumers in the diversity of play modes, more availablefile formats and flexibility of adding plug-in. It is imperative under thesituation to design a multifunctional network streaming player. The playerdeveloped by 8010 lab in UESTC has realized the data transportation by TCP,multicast and adding plug-in. It has been proved by tests that all functions arecorrect and available. The procedure of playing is fluent and liquid. At the...