Cross-layer alignment of intra random access point pictures

摘要

A video processing device includes a memory storing video data and one or more processors configured to: receive a first network abstraction layer (NAL) unit comprising a first picture of an access unit; in response to determining the first NAL unit comprises an intra random access point (IRAP) picture and in response to a NAL unit type for the first NAL unit indicating the presence of an instantaneous decoding refresh (IDR) picture without any associated leading pictures for a second NAL unit of the access unit comprising another IRAP picture, determine a NAL unit type for the second NAL unit to be a NAL unit type indicating the presence of an IDR picture without any associated leading pictures; and, process the first NAL unit and the second NAL unit based on the NAL unit type for the second NAL unit.

主权项

1. A method of processing received multi-layer video data, the method comprising:
receiving a network abstraction layer (NAL) unit comprising a picture, wherein the NAL unit belongs to a set of NAL units for an access unit comprising two or more pictures for a same instance in time; in response to determining the NAL unit comprises an intra random access point (IRAP) picture and in response to determining a NAL unit type for the NAL unit indicates the presence of an instantaneous decoding refresh (IDR) picture without any associated leading pictures, determining a NAL unit type for any other NAL units, of the set of NAL units for the access unit, comprising an IRAP picture to be a NAL unit type indicating the presence of an IDR picture without any associated leading pictures; and processing the NAL unit and the any other NAL units based on the NAL unit type for the any other NAL units.