1、視頻點(diǎn)播論文：基于P2P的視頻點(diǎn)播系統(tǒng)設(shè)計(jì)與實(shí)現(xiàn)【中文摘要】隨著計(jì)算機(jī)網(wǎng)絡(luò)和多媒體技術(shù)的發(fā)展,人們對(duì)網(wǎng)絡(luò)視頻點(diǎn)播的需求越來(lái)越高,高清、流暢和互動(dòng)已經(jīng)成為人們對(duì)視頻點(diǎn)播的要求,在傳統(tǒng)的C/S模式的視頻點(diǎn)播系統(tǒng)中,客戶終端要觀看視頻都需要依賴中心化的視頻服務(wù)器,而且對(duì)帶寬的要求越來(lái)越大,視頻服務(wù)器就容易成為網(wǎng)絡(luò)的瓶頸,當(dāng)網(wǎng)絡(luò)規(guī)模越大時(shí),服務(wù)器的負(fù)擔(dān)就會(huì)越重,一旦服務(wù)器崩潰,整個(gè)網(wǎng)絡(luò)就會(huì)癱瘓。另外由于服務(wù)器的能力有限,往往不能及時(shí)地對(duì)每一個(gè)客戶端的請(qǐng)求作出響應(yīng),因此會(huì)造成資源利用率低下。而P2P網(wǎng)絡(luò)中沒(méi)有中心化的服務(wù)器,不存在系統(tǒng)瓶頸,每個(gè)節(jié)點(diǎn)既充當(dāng)客戶端又充當(dāng)服務(wù)器端,因而具有很高的資源利用率。本

2、文所設(shè)計(jì)的基于P2P的視頻點(diǎn)播系統(tǒng)包括后臺(tái)服務(wù)和前臺(tái)用戶兩個(gè)主要模塊。后臺(tái)服務(wù)模塊主要包括:點(diǎn)播管理、視頻內(nèi)容服務(wù)、目錄服務(wù)器和用戶賬戶服務(wù)器等模塊。在服務(wù)器端通過(guò)以上幾個(gè)模塊,實(shí)現(xiàn)視頻點(diǎn)播節(jié)目和用戶賬戶的統(tǒng)一管理,直接為認(rèn)證用戶提供視頻數(shù)據(jù)資源,對(duì)整個(gè)P2P點(diǎn)播系統(tǒng)中有效結(jié)點(diǎn)進(jìn)行有效調(diào)度,協(xié)助快速構(gòu)建P2P網(wǎng)絡(luò),為視頻點(diǎn)播系統(tǒng)提供良好的平臺(tái)環(huán)境。前臺(tái)用戶模塊主要由客戶端和基于瀏覽器的頁(yè)面點(diǎn)播兩部分組成?？蛻舳耸侵赣脩舨シ牌?用戶通過(guò)播放器可以直接觀看后臺(tái)內(nèi)容出來(lái)的點(diǎn)播節(jié)目,而基于瀏覽器的頁(yè)面點(diǎn)播則是可以通過(guò)瀏覽器直接在網(wǎng)頁(yè)中觀看本系統(tǒng)內(nèi)容的P2P視頻點(diǎn)播節(jié)目。通過(guò)基于P2P的點(diǎn)播系統(tǒng)研究,實(shí)

3、現(xiàn)一個(gè)可承受大量并發(fā)用戶的P2P視頻點(diǎn)播服務(wù),解決由于當(dāng)前帶寬緊張給用戶方實(shí)現(xiàn)網(wǎng)上視頻點(diǎn)播帶來(lái)的限制問(wèn)題,從而提高用戶觀看視頻的流暢性?！居⑽恼縒ith the development of network and multimedia technique, the demand of people on the network video on demand is more and more high.High definition, fluency and interaction have become the requirements of people to video on de

4、mand, in the traditional C / S model of video on demand system, client terminal to watch video need to rely on the center of the video server, and the higher bandwidth demand, the video server the easilier becomes the bottleneck of network, when the network size is large, the burden on the server wi

5、ll be more heavy, once the server is crash, the entire network will be paralysis. In addition the servers capacity is limited, often cannot respond timely to every client, it will cause the utilization rate of resources is low. While the P2P network does not have a centralized server, and the bottle

6、neck of the system is not exist, each node acts as both a client and a server, thus it has higher resource utilization rate.The VOD system based on P2P services designed by this paper includes background service and upstage user two main modules. The background service module mainly includes: bunch

7、planting management, video content services, directory server and user account server module. In the server through the above modules to realize unified management of both dibble seeding program and user account ,directly provide authenticated users with video data resources, efficiently schedule ef

8、fective nodes in the whole P2P system ,rapidly help to construct P2P network, provide a good platform environment for the video on demand system. The upstage user module mainly make up of a client and a web page dibble seeding based on the browser two parts. The client is a user player, users can di

9、rectly watch the program from background content, and the web page dibble seeding based on the browser supply users with direct P2P video on demand program through the browser in this system.Through the research of VOD system based on P2P, to realize a server which can carry a large of concurrent us

10、ers, to solve the limit problem caused by insufficient bandwidth for users to accomplish online VOD, so as to improves the userswatching video fluency.親愛(ài)的用戶：煙雨江南，畫(huà)屏如展。在那桃花盛開(kāi)的地方，在這醉人芬芳的季節(jié)，愿你生活像春天一樣陽(yáng)光，心情像桃花一樣美麗，感謝你的閱讀。1、最困難的事就是認(rèn)識(shí)自己。20.7.297.29.202022:2122:21:257月-2022:212、自知之明是最難得的知識(shí)。二二二二年七月二十九日2020年7月29日星期三3、越是無(wú)能的人，越喜歡挑剔別人。22:217.29.202022:217.29.202022:2122:21:257.29.202022:217.29.20204、與肝膽人共事，無(wú)字句處讀書(shū)。7.29.20207.29.202022:2122:2122:21:2522:21:255、三軍可奪帥也。星期三, 七月 29, 2020七月 20星期三, 七月 29, 20207/29/2