In this paper we propose an efficient hybrid zero block early detection method for high efficiency video.coding (HEVC). Our method detects both genuine zero blocks (GZBs) and pseudo zero blocks (PZBs). For GZB.detection, we use a two sum of absolute difference bounds and a one sum of absolute transformed difference.threshold to decrease the GZB detection complexity. A fast rate-distortion estimation algorithm for HEVC is proposed.to improve the PZB detection rate. Experimental results on the HM
