The Design And Realization Of Encapsulation Method For MPEG-2 Transport Stream

Great changes have taken place in the world in recent years.The rapid development of science and technology has led to human progress.The public security management has a great demand in the society.The security protection systems are often used in public places such as urban roads.So security protection technology is the hot topic in scientific research.The design and realization of encapsulation method for MPEG-2 Transport Stream are proposed in this paper.The basic theory of transport stream is discussed.The MPEG protocol standard is briefly introduced.The project demand is analyzed.The MPEG-2 transport stream and program stream are discussed.The grammatical structure of MPEG-2 transport stream is analyzed such as head information,PSI information and so on.The program structure of the transport stream is designed.The ES is divided into several data packets of 188 bytes.The head information of TS packet is written into the program structure.Three methods are proposed to realize the data filling for the data packets less than 188 bytes.The superposition method of video caption is proposed in this paper.The video is divided into several image frames.The RGB format image is converted into the YUV format image.The time caption is overlaid on the Y component of YUV format image.The OSD of this DM365 is analyzed.The display of time captions on the video is realized.The encapsulation method of MPEG-2 Transport Stream and the superposition method of video caption can be applied to video conference system and webcast system.