Fast encoding in HEVC using subsampling with unsymmetrical octagonal search pattern

The ever growing demand for bandwidth leads to the development of video compression standard. The increase in quality of video leads to the increase in requirement of bandwidth. High Efficiency Video Coding (HEVC) is a compression standard which performs more compression compared to Advanced Video Coding (AVC) standard by maintaining the good quality of the video. But along with increase in efficiency the time required for coding is also increased. In this paper, the multi resolution frame with octagonal search pattern is used along with quarter sample interpolation to decrease the encoding time of encoder. This proposed work is compared to standard Test Zone (TZ) algorithm with the octagonal search pattern. The results of proposed algorithm shows that the encoding time was decreased by maximum of 51.96 % for BasketballPass sequence compared to TZ with octagonal search pattern with small degradation in video quality.