ELECTRONIC DEVICES FOR SIGNALING SUB-PICTURE BASED HYPOTHETICAL REFERENCE DECODER PARAMETERS

摘要

An electronic device for sending a message is described. The electronic device includes a processor and instructions stored in memory that is in electronic communication with the processor. The electronic device determines whether to include a common decoding unit CPB removal delay parameter in a picture timing Supplemental Enhancement Information (SEI) message. The electronic device also generates either a common decoding unit CPB removal delay parameter or a separate decoding unit CPB removal delay parameter for each decoding unit in the access unit. The electronic device also sends the picture timing SEI message with the common decoding unit CPB removal delay parameter or the decoding unit CPB removal delay parameters.

主权项

1. An electronic device for buffering a bitstream, comprising:
determining a picture timing SEI (Supplemental Enhancement Information) message to remove data; determining an access unit CPB (Coded Picture Buffer) removal delay parameter for removing an access unit from the CPB in the picture timing SEI message, wherein the access unit is a set of Network Access Layer (NAL) units that contain exactly one coded picture; and determining one or more decoding unit CPB removal delays for each decoding unit in the access unit, wherein if flag is equal to first value, the decoding unit is an access unit, otherwise decoding unit is a subset of an access unit; wherein the one or more decoding unit CPB removal delays is multiplied by a sub-picture clock tick parameter related removal time of decoding unit.