公开(公告)号：US20180352240A1

公开(公告)日：2018-12-06

申请号：US15613172

申请日：2017-06-03

Applicant: Apple Inc.

Inventor： Krishnakanth Rapaka ,  Mukta Gore ,  Sunder Venkateswaran ,  Xiaohua Yang ,  Xiang Fu ,  Francesco Iacopino ,  Linfeng Guo

IPC: H04N19/187 ,  H04N19/51 ,  H04N19/31 ,  H04N19/39

Abstract: Techniques for encoding video with temporal layering are described, comprising predicting a sequence of pictures with a motion prediction reference pattern having a number of virtual temporal layers, and encoding the sequence of pictures into an encoded bitstream with a temporal layering syntax, wherein a number of signaled temporal layers is less than the number of virtual temporal layers. The number of signaled temporal layers may be determined from a target highest frame rate, a target base layer frame rate, and the number of virtual temporal layers.