【摘要】：自20世紀60年代起人們就開始研究視頻通信技術,由于當時各種技術都不成熟,加之市場需求不強,視頻通信類應用沒有流行起來。借助網(wǎng)絡環(huán)境的改善和計算機技術的發(fā)展,各種音視頻類通信應用讓越來越多的人開始通過互聯(lián)網(wǎng)享受到通信的便利,各種即時通訊工具已經成為人們日常溝通不可缺少的一部分。近年來,信息交流的載體不再僅僅局限于文字,圖像、音視頻等載體開始流行。實時視頻通信技術逐漸被提上了研究和應用日程。隨著移動終端硬件能力的增強和3G/4G網(wǎng)絡的普及,在移動終端進行實時視頻通信無論在技術上還是市場上都變的可行,并逐漸受到了越來越多人的關注。 然而實時視頻通信系統(tǒng)的開發(fā)需要處理各種各樣的復雜問題,個人開發(fā)者和小公司沒有相應的技術積累和資金支持,阻礙了實時視頻通信類應用的發(fā)展。直到Html5WebRTC技術的出現(xiàn),WebRTC包含了視頻通信的核心技術,能夠通過調用Javascript API的方式實現(xiàn)瀏覽器之間的視頻通信。WebRTC不僅提供了視頻通信音視頻采集、編解碼、網(wǎng)絡傳輸?shù)裙δ?而且作為Html5標準,可以跨平臺,做到了“一次編寫,到處運行”,大大節(jié)省了開發(fā)和維護的成本。 基于以上背景,本文研究了WebRTC音頻引擎模塊、視頻引擎模塊以及網(wǎng)絡傳輸模塊,并在此基礎上初步設計了基于WebRTC技術的實時視頻通信系統(tǒng),實現(xiàn)了移動終端和電腦瀏覽器間的一對一視頻通信和一對多視頻通信。最后,運行結果表明該系統(tǒng)語音通話良好,視頻畫面清晰流暢。本文所做的工作,應當可以為后續(xù)相關研究提供參考。
[Abstract]:Since the 1960s, people began to study the video communication technology. At that time, all kinds of technologies were immature and the market demand was not strong, so the video communication applications did not become popular. With the improvement of network environment and the development of computer technology, more and more people begin to enjoy the convenience of communication through the Internet. All kinds of instant messaging tools have become an indispensable part of people's daily communication. In recent years, the carriers of information exchange are no longer limited to words, images, audio and video carriers and so on. Real-time video communication technology has been put on the research and application agenda. With the enhancement of the hardware capability of mobile terminal and the popularization of 3G/4G network, real-time video communication in mobile terminal becomes feasible in both technology and market, and has been paid more and more attention. However, the development of real-time video communication system needs to deal with a variety of complex issues, personal developers and small companies do not have the corresponding technology accumulation and financial support, which hinders the development of real-time video communication applications. Until the emergence of Html5WebRTC technology, WebRTC includes the core technology of video communication, which can realize the video communication between browsers by calling Javascript API. WebRTC not only provides the functions of video communication, audio and video acquisition, coding and decoding, network transmission, etc. And as a Html5 standard, it can cross platform, can be "write once, run everywhere", greatly saving the cost of development and maintenance. Based on the above background, this paper studies the WebRTC audio engine module, video engine module and network transmission module. On this basis, a real-time video communication system based on WebRTC technology is preliminarily designed. One-to-one video communication and one-to-many video communication between mobile terminal and computer browser are realized. Finally, the running results show that the system has good voice communication and clear and smooth video picture. The work done in this paper should provide a reference for the follow-up research.
【學位授予單位】：北京郵電大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TN929.5;TP311.52

【參考文獻】

相關期刊論文 前10條

1 朱孫鑌,陳惠芳,趙問道,陳彪;安全的實時傳輸協(xié)議SRTP的研究與實現(xiàn)[J];電視技術;2004年11期

2 陳麗英;;網(wǎng)絡視頻會議業(yè)務的現(xiàn)狀與未來[J];電信技術;2009年12期

3 李慧云;何震葦;李麗;陸鋼;;HTML5技術與應用模式研究[J];電信科學;2012年05期

4 周曄;李生紅;;基于ICE的VoIP穿越NAT改進方案[J];計算機安全;2008年10期

5 溫照松;易仁偉;姚寒冰;;基于WebSocket的實時Web應用解決方案[J];電腦知識與技術;2012年16期

6 胡敏;劉六程;劉鵬;;基于WebRTC的視頻會議系統(tǒng)的設計與實現(xiàn)[J];電視技術;2013年01期

7 張玉晴;黃瑾娉;;基于HTML5的跨平臺移動應用關鍵技術的研究與實現(xiàn)[J];工業(yè)控制計算機;2013年03期

8 李鴻彬,楊雪華,雷為民;TURN服務器原型系統(tǒng)的設計與實現(xiàn)[J];計算機應用;2005年07期

9 謝波;蔣志平;;XMPP研究與應用[J];科技廣場;2008年10期

10 龍奇;;下一代Web通信技術HTML5 Web Socket的研究[J];科技信息;2011年36期

，

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