Discrete cosine transform (DCT) plays an important role in video coding. Integer DCTs which approximate the standard DCT– II have been developed for various sizes i.e., N = 4, 8, 16, etc. In this paper, a review of various integer DCTs used in H.264, AVSchina and VC-1 is provided. For a first order Markov process, with high adjacent correlation coefficient, ρ = 0.95 and N=8 properties like tran...