隨著IP網路的迅速發展，多媒體串流成為現今網路影音傳播技術的主流。但是串流媒體的傳遞會受到很多因素影響而使接收品質降低，例如網路環境的頻寬變化、封包遺失、封包失序、網路壅塞、網路延遲、異質網路等因素。所以如何克服現有網路問題、提高接收視訊品質及提供多媒體服務品質QoS（Quality of Service）的要求，成為熱門的研究目標。
在本論文中，我們研究了多媒體串流傳輸技術，其中包含了自適應控制方法的運用、智慧串流、抗錯誤傳輸技術的保護，網路協議方面則是使用即時傳輸協定RTP與RTCP，我們並且研究了最新的壓縮技術H.264。
我們提出了一項改善串流接收方法，在RTP/RTCP協議的基礎以新的服務品質動態控制演算法來即時監控網路狀態，改變緩衝區動態變動的方式，即時回應網路頻寬的變化，來幫助接收端節省資源、減少延遲。
本論文並以DirectShow結合RTP/RTCP協定實作了即時視訊傳輸系統。

As the rapid development of IP network architecture, the Multimedia Streaming has already become the mainstream of the transmission of real-time video over network. However, there are several factors affecting the transmission of streaming video and hence lower the receipt quality accordingly, such as the variable of network bandwidth, packet loss, out-of-order, network congestion, latency and heterogeneous networks. Therefore, it has become a popular research target about how to overcome the current network problems, to enhance the video quality for user or to provide the QoS demand for Streaming Video.
In this thesis, our research scope covers the Multimedia streaming technology such as the use of Adaptation control method, Intelligent Streaming, the protection of error robustness transmission. Furthermore, we take the RTP/RTCP real-time transport protocol for the Network protocol, and also research the latest H.264 standard.
Moreover, we proposed a new methodology for improving streaming. The new QoS Dynamic control algorithm based on the RTP/RTCP protocols will has real-time inspect the network status, and then dynamic change buffer length to deal the problem caused by bandwidth variance. This methodology can save resources of receiver and decrease network delay.
At the end of our thesis, we designed a real-time video streaming transporting system by combining DirectShow and RTP/RTCP protocols.

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