A COMPARATIVE ANALYS,6 %(7:((1 ',5$& + $1' +(9& VIDEO ENCODERS AT VARIABLE BIT RATES

Abstract

The main goal of this video is to realize significantly better compression performance than other codecs in the range of 50% bit rate reduction, for the same perceptual video quality [1]. HEVC focuses on video resolution and increased use of parallel processing. HEVC hybrid video coding is based on Coding Tree Units (CTUs) in this codec as shown in Figure.2. These structures consist of Coding Blocks (CBs), Prediction Blocks (PBs) and Transformation Blocks (TBs) [1,2]. This hierarchical concept brings much more flexibility than the older H.26L codecs. In transformation block, the discrete cosine can be defined down to 4x4 pixels depending on input stream and user’s signaling description. Moreover, for the 4x4 transform of intra picture prediction, the discrete sine transform is specified as an alternative integer process. In addition, advanced motion vector prediction and asymmetric improvements unique to HEVC [1,3]. motion