Fast inter sub-partition prediction unit mode decision for HEVC

In this paper, we propose a fast inter mode decision method for High Efficiency Video Coding (HEVC) in order to reduce its encoding complexity by simplifying the inter prediction unit (PU) mode decision process. Experimental results show that encoding time is reduced by 46.5% at the consequence of only 1.1% coding efficiency loss when the proposed method is jointly used with the early CU termination (ECU) method.