本文選題：移動流媒體　切入點(diǎn)：P2P　出處：《中國科學(xué)院大學(xué)（工程管理與信息技術(shù)學(xué)院）》2014年碩士論文　論文類型：學(xué)位論文

【摘要】：隨著移動通信的迅速發(fā)展,移動用戶對音視頻的內(nèi)容和質(zhì)量需求與日劇增,移動流媒體成為移動通信發(fā)展的新熱點(diǎn)。由于無線網(wǎng)絡(luò)信號不穩(wěn)定、傳輸時延大等特點(diǎn),使得移動流媒體應(yīng)用對視頻壓縮率和可靠的數(shù)據(jù)傳輸提出了更大的挑戰(zhàn)。 為保證移動用戶在播放視頻時有高畫質(zhì)和不卡頓的播放體驗(yàn),本文對已有的移動流媒體關(guān)鍵技術(shù),如HLS流媒體直播協(xié)議(Http Live Streaming Protocol)、移動流媒體編碼方法、P2P數(shù)據(jù)傳輸技術(shù)和視頻編解碼庫(FFMpeg)以及Boost庫,C語言等進(jìn)行了深入的分析研究。在此基礎(chǔ)上,基于Apple公司提出的HLS移動流媒體協(xié)議,提出了一種基于P2P移動流媒體系統(tǒng)。本文詳細(xì)闡述了系統(tǒng)整體方案和概要設(shè)計(jì)；實(shí)現(xiàn)了服務(wù)器端的音視頻采集、音視頻轉(zhuǎn)碼、流切片、H.264編碼過濾器和Tracker Server服務(wù)器等主要功能模塊；實(shí)現(xiàn)了客戶端的P2P下載模塊、本地HTTP模塊和播放模塊等主要功能模塊。論文最后對設(shè)計(jì)實(shí)現(xiàn)的播放器使用情況及服務(wù)器的負(fù)載率進(jìn)行了測試分析。 本文設(shè)計(jì)實(shí)現(xiàn)的流媒體系統(tǒng)實(shí)現(xiàn)了音視頻采集、編碼、流媒體傳輸、播放、等功能。在相同條件下,該系統(tǒng)可以更好的滿足用戶對視頻觀看的體驗(yàn),在用戶量暴增和大規(guī)模直播時更能突顯該系統(tǒng)的優(yōu)點(diǎn)。
[Abstract]:With the rapid development of mobile communication, the demand for audio and video content and quality of mobile users is increasing rapidly. Mobile streaming media has become a new hot spot in the development of mobile communication. Mobile streaming media applications pose a greater challenge to video compression rates and reliable data transmission. In order to ensure that mobile users have high video quality and no playback experience, this paper focuses on the existing key technologies of mobile streaming media. For example, HLS streaming media protocol (http Live Streaming protocol), mobile streaming media coding method, P2P data transmission technology, video codec library FFMpeg) and Boost library C language are deeply analyzed and studied. Based on the HLS mobile streaming media protocol proposed by Apple Company, a P2P mobile streaming media system is proposed. The overall scheme and outline design of the system are described in detail, and the audio and video collection, audio and video transcoding on the server side are realized. The main function modules, such as H.264 encoding filter and Tracker Server server, are implemented. The main function modules such as local HTTP module and playback module. Finally, the performance of the player and the load rate of the server are tested and analyzed. The streaming media system designed in this paper realizes the functions of audio and video collection, coding, streaming media transmission, playback and so on. Under the same conditions, the system can better meet the user's experience of watching video. The advantages of the system can be highlighted when the number of users increases and the mass broadcast.
【學(xué)位授予單位】：中國科學(xué)院大學(xué)（工程管理與信息技術(shù)學(xué)院）
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TP393.02;TN929.5

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