MPEG-4 COMPRESSION

One of the hottest topics in video compression technology today is MPEG (Moving Pictures Expert Group). It is a working group of ISO/IEC (the International Standards Organization / the International Electro-technical Commission) in charge of the development of standards for coded representation of digital audio and video. MPEG is a combination of lossy video compression and lossy audio compression. High compression rate is achieved in MPEG by storing the difference from one frame to another, instead of storing each entire frame. The aim of this project is to investigate the use of trellis quantization and motion vectors within the MPEG-4 frame work and to introduce the best suited quantization and compression which can provide easy and errorless transmission. This project describes the conversion of the audio file (a .wav) and the raw YUV video file (a .yuv) to MPEG-4 files (a .mp4). These files are compressed with different parameters and finally transform them into MPEG-4 format using FFMPEG (Fast Forward Moving Pictures Expert Group). FFMPEG can be compiled in Windows by using software called as CYGWIN. The functionality of CYGWIN is same as UNIX. To achieve the above specified goal, lossy MPEG compression technique is analysed. The main problems like size and error in information occurred during transmission of data can be resolved by the methodologies used in this project.School of Computing, Communications and Electronic