Performance analysis of various video compression standards

In recent few decades, digital video compression technologies have become an necessity for the creation, communication and consumption of visual information. A video is composed of a large number of still images, and since images are taken at relatively short time distance, the two neighboring images are similar. It is known fact, that there is strong correlation between the adjacent images or frames. This correlation in the time direction is called the interframe correlation. This interframe correlation can be exploited and efficiently reduced to achieve compression. Out of the different compression techniques used for video data, the Lossy techniques provide high compression ratios. However, it must be kept in mind that, one has to compromise on video quality to have a lower data size (therefore computational time). As the compression ratio increases the size decreases and the quality degrades. The encoding at the server side and decoding at the receiver side also require computational resources, which have to be taken into consideration. In this paper we will compare some video compression standards against each other on the basis of bit rate required, size and quality of video.