Signaling sub picture IDS in sub picture based video coding

摘要

Problem to be solved: to provide a method for signaling sub picture IDS in sub picture based video coding.The method of video decoding comprises the steps of receiving a bit stream including a SPS, PPS, and sub picture associated with sub picture ID mapping.Determination is made whether the SPS flag has a first value or has a second value.The SPS flag having a first value specifies that the sub picture ID mapping is signaled within the SPS and the second value specifies that the sub picture ID mapping is signaled within the PPS.When the SPS flag has a first value, the sub picture ID mapping is acquired from the SPS, when the SPS flag has a second value or the PPS flag has a first value.Diagram