Patent ID: 11943463
Assignee: MICROSOFT TECHNOLOGY LICENSING, LLC
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A computer system comprising one or more processing units and memory, wherein the computer system implements a video encoder configured to perform operations comprising:
setting a coded picture buffer removal delay (“CPBRD”) delta value for a given access unit for a current picture among pictures of a video sequence, the current picture having a first-type supplemental enhancement information (“SEI”) message associated with the current picture;
setting a value of a concatenation flag for the given access unit, wherein:
if the value of the concatenation flag is a first value, a CPBRD value in a second-type SEI message for the given access unit indicates an increment value specifying a nominal coded picture buffer (“CPB”) removal time of the current picture relative to a nominal CPB removal time of a first preceding picture in decoding order, the first preceding picture having a first-type SEI message associated with the first preceding picture; and
if the value of the concatenation flag is a second value, the nominal CPB removal time of the current picture is indicated, by the CPBRD delta value, as an increment value relative to a nominal CPB removal time of a second preceding picture in decoding order; and

signaling the CPBRD delta value and the value of the concatenation flag for the given access unit in the first-type SEI message associated with the current picture.