公开(公告)号：US11363262B1

公开(公告)日：2022-06-14

申请号：US17121349

申请日：2020-12-14

Applicant: GOOGLE LLC

Inventor： Ching Yin Derek Pang ,  Yeping Su ,  Yao-Chung Lin

IPC: H04N19/105 ,  H04N19/176 ,  H04N19/177 ,  H04N19/114 ,  H04N19/159

Abstract: A first aspect is a method for coding a group of pictures (GOP) that includes frames of a video. The method includes encoding, at least some of the frames of the GOP, using a first encoding pass to obtain encoding statistics; obtaining, using the encoding statistics, respective temporal dependency likelihoods (TDLs) for the at least some of the frames of the GOP, where the respective TDLs indicate contributions that the at least some of the frames make in reducing prediction errors of the GOP; obtaining a reference frame based on the respective TDLs; and using the reference frame in encoding at least some of the frames of the GOP in a second encoding pass.