SIGNALING DPB PARAMETERS IN VPS EXTENSION AND DPB OPERATION
A system for encoding and/or decoding a video bitstream that includes a base bitstream and enhancement bitstreams representative of a video sequence. The receiver receives a video parameter set and a video parameter set extension, where the video parameter set extension includes decoder picture buffer parameters.
1 . A method for decoding a video bitstream comprising:
(a) receiving a base bitstream representative of a coded video sequence;
(b) receiving a plurality of enhancement bitstreams representative of said coded video sequence;
(c) receiving a video parameter set containing syntax elements that apply to said base bitstream and said plurality of enhancement bitstreams, wherein said video parameter set contains a syntax element signaling a video parameter set extension;
(d) receiving said video parameter set extension containing syntax elements that includes decoded picture buffer related parameters for a decoded picture buffer for at least one of said enhancement bitstreams.
2 . The method of claim 1 wherein said decoded picture buffer related parameters are signaled for each enhancement layer.
3 . The method of claim 1 wherein said decoded picture buffer related parameters are signaled for a sub-group of said enhancement layers.
4 . The method of claim 3 wherein said sub-group is an output layer set.
5 . The method of claim 3 wherein said sub-group is an operational point.
6 . The method of claim 1 wherein said decoded picture buffer related parameters are used for the output and removal of pictures from decoded picture buffer.
7 . The method of claim 6 wherein said output and removal of pictures from decoded picture buffer is determined based on using decoded picture buffer related parameters for an output layer set.
8 . The method of claim 6 wherein said output and removal of pictures from decoded picture buffer is determined based on using decoded picture buffer related parameters for an operation point.
9 . The method of claim 1 wherein said output and removal of pictures from decoded picture buffer is determined based on using decoded picture buffer related parameters signaled in video parameter set extension or in sequence parameter set.
10 . The method of claim 1 wherein said decoded picture buffer is an output order decoded picture buffer.