【摘要】：隨著智能手機(jī)在人們生活中的廣泛應(yīng)用,一些過(guò)去人們不敢想的夢(mèng)想變成現(xiàn)實(shí)�？萍嫉陌l(fā)展無(wú)疑是“中國(guó)夢(mèng)”的重要?jiǎng)恿?而智能手機(jī)在科技發(fā)展中無(wú)疑也扮演著重要的角色。在過(guò)去短短的幾年里,智能手機(jī)的信息處理能力以及移動(dòng)網(wǎng)絡(luò)傳輸速率的都大幅提升。智能手機(jī)終端利用移動(dòng)網(wǎng)絡(luò)進(jìn)行視頻傳輸成為倍受人們青睞的研究對(duì)象。本文設(shè)計(jì)并實(shí)現(xiàn)了一種實(shí)用性較高的無(wú)線視頻傳輸系統(tǒng)。 本文首先介紹了這一課題的相關(guān)背景以及研究現(xiàn)狀,介于智能手機(jī)市場(chǎng)的主流,采用Android智能手機(jī)作為視頻數(shù)據(jù)的采集端,并闡述了最新版本的Android系統(tǒng)框架以及功能特點(diǎn)。此外,本文還對(duì)當(dāng)前視頻的編解碼技術(shù)進(jìn)行了研究,選擇了H.264視頻壓縮編碼方式,同時(shí)深入剖析了H.264技術(shù)細(xì)節(jié)。本文用C#語(yǔ)言編寫的一個(gè)簡(jiǎn)單平臺(tái)程序作為播放端,因此也對(duì)C#語(yǔ)言和. NET Framework平臺(tái)進(jìn)行了介紹。 本文在具體的設(shè)計(jì)實(shí)現(xiàn)過(guò)程中,采用Android系統(tǒng)的MediaRecorder類實(shí)現(xiàn)實(shí)時(shí)視頻的采集,并利用LocalSocket實(shí)現(xiàn)數(shù)據(jù)流的獲��；直接在Android采集端通過(guò)分析提取SPS和PPS的信息,獲得原始的H.264實(shí)時(shí)視頻流；按照RTP/UDP協(xié)議對(duì)視頻流進(jìn)行打包發(fā)送；在上位機(jī)終端平臺(tái)上,通過(guò)移植VLC播放器,并進(jìn)行SDP會(huì)話的方式實(shí)現(xiàn)對(duì)視頻的實(shí)時(shí)播放,完成一套基于android的H.264視頻無(wú)線傳輸系統(tǒng)的實(shí)現(xiàn)。 最后經(jīng)過(guò)實(shí)際的測(cè)試,該系統(tǒng)比較穩(wěn)定,方便使用。同時(shí),由于成本低廉,該系統(tǒng)可以廣泛應(yīng)用,能滿足多種不同的需求。
[Abstract]:With the widespread use of smartphones in people's lives, some dreams that people didn't think of in the past came true. The development of science and technology is undoubtedly an important driving force for Chinese Dream, and the smartphone undoubtedly plays an important role in the development of science and technology. In the past few short years, the information processing ability of the smartphone and the speed of the mobile network have been greatly improved. Smart phone terminal using mobile network for video transmission has become a popular research object. A practical wireless video transmission system is designed and implemented in this paper. Firstly, this paper introduces the background and research status of this topic. In the mainstream of the smartphone market, Android smart phone is used as the video data acquisition terminal, and the latest version of the Android system framework and function characteristics are described. In addition, this paper also studies the current video coding and decoding technology, chooses the H.264 video compression coding method, and deeply analyzes the H.264 technology details. This paper uses C # language to write a simple platform program as the playback end, so also on the C # language and. The NET Framework platform is introduced. In the process of design and implementation, the MediaRecorder class of Android system is used to realize the real-time video capture, and the data stream is acquired by using LocalSocket, and the original H. 264 real-time video stream is obtained by analyzing and extracting the information of SPS and PPS at the Android collecting end. The video stream is packaged and sent according to RTP/UDP protocol, and the real-time video playback is realized by transplanting VLC player and SDP session on the host computer terminal platform, and a wireless transmission system of H.264 video based on android is completed. Finally, after the actual test, the system is stable and easy to use. At the same time, because of the low cost, the system can be widely used to meet a variety of needs.
【學(xué)位授予單位】：安徽大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TN919.81

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