期刊名称：International Journal of Advanced Research In Computer Science and Software Engineering
印刷版ISSN：2277-6451
电子版ISSN：2277-128X
出版年度：2013
卷号：3
期号：3
出版社：S.S. Mishra
摘要：Over the past decades, digital video compression technologies have become an integral part of the way we create, communicate and consume visual information. Digital video communication can be found today in many application sceneries such as broadcast services over satellite and terrestrial channels, digital video storage, wires and wireless conversational services and etc. The data quantity is very large for the digital video and the memory of the storage devices and the bandwidth of the transmission channel are not infinite, so it is not practical for us to store the full digital video without processing. For instance, we have 720 x 480 pi xels per frame, 30 frames per second, total 90 minutes full color video, and then the full data quantity of this video is about 167.96 Gigabytes. Thus, several video compression algorithms had been developed to reduce the data quantity and provide the acceptable quality as possible as can. This paper starts with an explanation of the b asic concepts of video compression algorithms and then introduces and performs video compression standards H.264 and MPEG4. In paper highly flexible approach of H.264 & MPEG4 concentrates specifically on efficient compression of video frames base on PSNR. Key features of the standard include compression efficiency (providing significantly better compression than any previous standard), and a focus on popular applications of video compression.
