Study And Design Of Translation From AVI To H.264 Media

The development of digital video accelerates the development of multimedia, video communication and digital TV.The technology of video transcoding makes the communication between different system and terminals seamlessly.The transcoding of compressed bitstreams is to transcode a compressed video stream from one format to another.The development of information and multimedia technology makes the phone film a newfashioned and popular entertainment of people, its huge market potential arouses intensely interest of the telephone manufacturer,it brings new business opportunities for them.The common phone film format has 3GP,MP4 and WMV.3GP occupies the leading position as its small amount of data.3GP film uses H.263 and H.264 coded mode.It can be stored in the mobile phone and other device as its small amount of data which makes the download from website meaningful.This paper mainly introduce the video encode standard,rate control technology and video transcoding.First,the H.264 encode standard is introduced,choose the AVI video which contains large amount of data as the source file,then realize the transcoding from Avi to H.264,at last abtain object file of good quality and small data.The mainly jobs are as follows:Firstly,make a serious analysis of the AVI video file format and the storage of data,find its characteristic feature.Secondly,study the standard of H.264, make a compare with AVI file,find the differrences of data storage and encoding and the meaning of transcoding.Thirdly,make a carefully research of H.264 Intra frame prediction,Inter frame prediction,integral DCT tramsform and entropy code.Fourth, on the basis of above,make a detailed introduction of the system transcoding, realize the the system on the PC,and design the program. Last,do some testing of the system.At last, the experiments prove the design is meaningful,though there are also some insufficient in quality and property,it can expect to be a source of phone movie,which makes the download on website more convenient.The insufficient is expected to be resolved in the future job.