Avoidance of Redundant Signaling in Multi-Layer Video Bitstreams

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Avoidance of Redundant Signaling in Multi-Layer Video Bitstreams

This abstract first appeared for US patent application 18920491 titled 'Avoidance of Redundant Signaling in Multi-Layer Video Bitstreams

Original Abstract Submitted

A method of decoding is provided. The method includes receiving a video bitstream including a plurality of layers having sublayers and a video parameter set (VPS) including a first flag having a first value, wherein the first flag having the first value specifies that temporal identifiers (IDs) of a highest sublayer representation for level information, decoded picture buffer (DPB) parameters, and hypothetical decoder refresh (HRD) parameters are not present in the VPS and are inferred to be equal to a maximum number of the sublayers that may be present in a layer of the plurality of layers specified by the VPS; obtaining the level information, the HRD parameters, and the DPB parameters corresponding to the temporal ID of the highest sublayer representation from the VPS; and decoding a picture from one of the plurality of layers to obtain a decoded picture. A corresponding method of encoding is also provided.