Design And Implementation Of HD Recording And Playing System Software Based On FPGA+DM8148

With the rapid development of science and technology,social informationization is also highly developed.The application of information technology has penetrated into all areas of our life.Information-based teaching has become an important means of education at present,especially for primary and secondary education.Multimedia technology,the teaching of abstract skills through the intuitive presentation of information technology in front of students,so that the original boring classroom become more vivid,it can effectively improve the quality of teaching and student learning initiative.Embedded recording and broadcasting system is the mainstream of the current recording and broadcasting system,especially the education industry,subject based on this demand,in a full theoretical analysis and research,put forward a complete set of embedded recording and broadcasting system implementation.Secondly,it analyzes the theoretical basis of design and implementation of high-definition recording and broadcasting system.Secondly,the paper introduces the background of the research and development of high-definition recording and broadcasting system.Then,it clarifies the research goal,the research content and the key problems to be solved,and puts forward the method and feasibility analysis.And the related technology;At the same time,combined with the actual functional requirements of the system,the hardware design principle of the whole system is introduced in detail,and the design and implementation of each module are analyzed;Then,the principle and framework of the whole system software design are analyzed,Finally,the thesis summarizes and prospects the whole project.The goal of the research is to research and design a stable,reliable and low power consumption embedded HD recording and broadcasting system.The front end of HD recording and broadcasting system adopts FPGA to process digital video source with different resolution and frame rate.DM8148 for video capture,compression coding,storage,network interaction and other processing.Support for H.264 / MPEG / MJPEG video compression encoding;support for audio AAC / G711 encoding;support for local recording and remote recording;support for AVI / MPEG / MJPEG video compression encoding;FLV / MP4 multiple formats of recording,support rtmp,rtsp live.