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研究生:吳智群
研究生(外文):Chih-ChunWu
論文名稱:一個支援可調式H.264/SVC串流之多媒體雲端系統
論文名稱(外文):A Multimedia Cloud System Supporting Scalable H.264/SVC Streaming
指導教授:黃悅民黃悅民引用關係
指導教授(外文):Yueh-Min Huang
學位類別:碩士
校院名稱:國立成功大學
系所名稱:工程科學系碩博士班
學門:工程學門
學類:綜合工程學類
論文種類:學術論文
論文出版年:2012
畢業學年度:100
語文別:中文
論文頁數:78
中文關鍵詞:媒體雲串流系統H.264SVC時間可調性空間可調性品質可調性負載平衡
外文關鍵詞:Media CloudStreaming SystemH.264SVCTemporal ScalabilitySpatial ScalabilityQuality ScalabilityLoad Balance
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近年來,網路上的多媒體串流技術越來越成熟,隨著網路速度及個人手持裝置運算能力的提升,對於影片品質的要求越來越高,因此為了提供廣大使用者觀看影片的需求,如何讓多個伺服器有效的分工是一項重要的議題。隨著網路上可提供運算能力的節點數目不斷增加,可以提供串流能力的電腦愈來越多,進而可成一個廣大的媒體雲。隨著雲端的概念形成後,如何將觀看影片的需求平均分配到媒體雲內的節點本文探討的議題
本文實作一套以H.264/SVC在媒體雲之即時串流系統,透過H.264/SVC的時間可調性(Temporal Scalability)、空間可調性(Spatial Scalability)及品質可調性(Quality Scalability)架構,根據網路的頻寬提供最適合用戶端品質的影片。同時探討與實作節點間的負載平衡與溝通機制,透過評估節點與用戶端的頻寬及節點間的運算能力,選擇最佳的節點,並決定適合的影片串流路徑,以提供良好的影像觀看品質。

In recent years, the multimedia streaming technology on the Internet has matured, since the enhancement of the network speed and the computing power of handheld devices, in order to provide the rising demand of video viewing on the go, an effective division of computing resource has become an important issue. With the increasing number of nodes which can provide computing resource and streaming capacity, which composes a big media cloud. With the concept of media cloud, how to split the demand of watching movie into the nodes within the media cloud is a key concept. This article investigate the issues.
This article implements a H.264/SVC based streaming system in the media cloud, by using H.264/SVC scalability architecture, which includes temporal, spatial and quality scalability, by measuring the bandwidth of specific streaming path on the network which provide the most suitable quality videos for the client. Also, to investigate the balance of computing resource and implement inter-node communication mechanism, by measuring the bandwidth between streaming node and client and by computing resource of the streaming node, to choose the best node as a streaming node, also determine the most suitable streaming path, in order to provide the best quality of movie for the current bandwidth.

中文摘要 I
Abstract II
誌謝 III
目錄 IV
圖目錄 VI
表目錄 VIII
第一章 緒論 9
1.1 研究動機 9
1.2 研究貢獻 10
1.3 章節提要 10
第二章 相關標準介紹 11
2.1 H.264/SVC編碼介紹 11
2.1.1 H.264/SVC可調性種類 12
2.2 H.264/SVC字元串流結構分析 20
2.3 Joint Scalable Video Model 25
第三章 系統軟體架構 26
3.1 系統元件 26
3.2 元件程式功能介紹 28
3.3 系統運作流程 31
3.4 決策模型 33
3.4.1 串流節點對於用戶端的頻寬預測模型 33
3.4.2 串流節點的選擇與平衡機制 37
第四章 系統實現 41
4.1 系統實現流程 41
4.2 JSVM軟體編碼流程 41
4.3 H.264/SVC封包解析器與分離器 46
4.4 媒體雲節點建置 49
4.4.1 UPnP Device 49
4.4.2 UPnP Control Point 51
4.4.3 Bandwidth Monitor 52
4.4.4 CPU Monitor 54
第五章 系統實作結果與分析 56
5.1 測試環境 56
5.2 測試結果與分析 56
5.2.1 頻寬預測模型的誤差率與影片平均延遲時間 57
5.2.2 串流節點的選擇與平衡機制結果分析 69
第六章 參考文獻 76

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