Patent ID: 9491456
Filing Date: 2016-11-08
CPC Classification: H04N

Claim Text:
1. A method for decoding video data, the method comprising: decoding a sub-picture timing supplemental enhancement information (SEI) message that provides Coded Picture Buffer (CPB) removal delay information for a decoding unit (DU) associated with the sub-picture timing SEI message, the DU associated with the sub-picture timing SEI message consisting, in decoding order, of an SEI network abstraction layer (NAL) unit containing the sub-picture timing SEI message followed by one or more NAL units that do not contain sub-picture timing SEI messages, including all subsequent NAL units in an access unit (AU) up to but not including any subsequent SEI NAL unit containing an additional sub-picture timing SEI message; determining, from the sub-picture timing SEI message, a duration between a CPB removal time of a last DU of the AU in decoding order and a CPB removal time of the DU associated with the sub-picture SEI message; deriving the CPB removal time of the DU associated with the sub-picture timing SEI message based at least in part on the determined duration; and at the CPB removal time of the DU associated with the sub-picture timing SEI message, decoding video data associated with the DU associated with the sub-picture timing SEI message.