【摘要】：視頻編輯技術(shù)被廣泛的應(yīng)用于影視后期處理、廣告制作、視頻教學(xué)等領(lǐng)域,如何能簡(jiǎn)單、快捷的制作出用戶需要的視頻效果一直是相關(guān)領(lǐng)域的研究課題�，F(xiàn)有的視頻編輯技術(shù)主要分兩種:線性視頻編輯和非線性視頻編輯。線性編輯技術(shù)是一種利用磁帶的編輯方式,它使用電子手段根據(jù)節(jié)目?jī)?nèi)容的需要將素材拼接成新的連續(xù)畫(huà)面,現(xiàn)在已經(jīng)很少使用。非線性編輯技術(shù)采用數(shù)字壓縮技術(shù)壓縮視頻,后期制作的所有功能都由一臺(tái)計(jì)算機(jī)來(lái)完成,大多數(shù)視頻編輯軟件采用的都是該技術(shù)。非線性編輯技術(shù)會(huì)直接修改原有的視頻數(shù)據(jù),這樣在編輯后的視頻中刪除某個(gè)特效就變得幾乎不可能,對(duì)某些需要反復(fù)編輯的視頻,例如教學(xué)視頻,現(xiàn)有的非線性編輯技術(shù)已經(jīng)不能滿足需求。針對(duì)上述情況,論文提出了一種新的視頻編輯方法,該方法可有效解決現(xiàn)有視頻編輯方法存在的問(wèn)題,并在此基礎(chǔ)上開(kāi)發(fā)了一個(gè)能夠編輯和播放視頻的軟件系統(tǒng),以驗(yàn)證該方法的可行性。通過(guò)使用一個(gè)中間文件存儲(chǔ)編輯信息,編輯視頻時(shí)就無(wú)需修改原有的視頻數(shù)據(jù),對(duì)視頻的編輯也只用修改該中間文件,這樣多次編輯視頻就變?yōu)榭尚小Ｕ撐氖紫葘?duì)視頻壓縮編碼技術(shù)和視頻解碼技術(shù)進(jìn)行了總結(jié)分析,并且研究了專(zhuān)用視頻的解碼結(jié)構(gòu)。然后對(duì)編輯和播放系統(tǒng)的整體架構(gòu)和各個(gè)子模塊結(jié)構(gòu)進(jìn)行了詳細(xì)設(shè)計(jì),重點(diǎn)是中間文件格式的設(shè)計(jì),經(jīng)過(guò)對(duì)系統(tǒng)支持的特效類(lèi)型和特效屬性進(jìn)行編碼,論文設(shè)計(jì)出了完整可靠的中間文件格式。接著實(shí)現(xiàn)了系統(tǒng)的各個(gè)核心模塊,主要是視頻編輯模塊和視頻播放模塊。最后構(gòu)建測(cè)試樣例,對(duì)系統(tǒng)的功能進(jìn)行實(shí)驗(yàn)測(cè)試,并對(duì)實(shí)驗(yàn)測(cè)試結(jié)果進(jìn)行總結(jié)和分析。實(shí)驗(yàn)測(cè)試結(jié)果表明,該編輯與播放系統(tǒng)功能完備,性能穩(wěn)定,能較好的完成視頻編輯與播放任務(wù),進(jìn)而驗(yàn)證了論文提出的基于中間文件進(jìn)行視頻編輯方法的可行性,達(dá)到了論文所預(yù)期的目標(biāo)。
[Abstract]:Video editing technology has been widely used in film and television post-processing, advertising production, video teaching and other fields, how to make a simple, fast video effects that users need has been a research topic in related fields. The existing video editing techniques are mainly divided into two types: linear video editing and nonlinear video editing. Linear editing is a kind of editing method using magnetic tape. It uses electronic means to assemble materials into new continuous pictures according to the needs of program content, which is rarely used now. Non-linear editing technology uses digital compression technology to compress video. All the functions of post-production are accomplished by one computer. Most video editing software uses this technology. The non-linear editing technique directly modifies the original video data, which makes it almost impossible to delete a special effect from the edited video, for certain videos that need to be edited repeatedly, such as instructional videos. The existing nonlinear editing technology can not meet the needs. In view of the above situation, a new video editing method is proposed, which can effectively solve the problems existing in the existing video editing methods. On this basis, a software system for editing and playing video is developed. To verify the feasibility of the method. By using an intermediate file to store editing information, there is no need to modify the original video data while editing the video, and only the intermediate file is modified for the editing of the video, so it becomes feasible to edit the video many times. Firstly, the video compression coding technology and video decoding technology are summarized and analyzed, and the decoding structure of special video is studied. Then, the whole structure of the editing and playing system and the structure of each sub-module are designed in detail. The emphasis is on the design of the intermediate file format, and the special effect types and special effects attributes supported by the system are coded. A complete and reliable intermediate file format is designed. Then the core modules of the system are implemented, mainly video editing module and video playing module. Finally, a test example is built to test the function of the system, and the test results are summarized and analyzed. The experimental results show that the editing and playing system has a complete function, stable performance, and can complete the task of video editing and playback. The feasibility of the video editing method based on intermediate files is verified. Achieve the expected goal of the paper.
【學(xué)位授予單位】：西安電子科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類(lèi)號(hào)】：TP391.41

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