Signaling parameters in vps extension and dpb operation

1:

• A method for decoding a video bitstream comprising:
• receiving a video parameter set containing syntax elements including decoded picture buffer related parameters for a decoded picture buffer for at least one of enhancement bitstreams;
• wherein
• the decoded picture buffer related parameters includes a first parameter, a second parameter and a third parameter, wherein
• the first parameter specified a maximum required size of the k-th layer for a coded video sequence (CVS) in i-th output layer set,
• the second parameter specifies a maximum allowed number of access units containing a picture with a picture output flag equal to 1 that can precede any access unit that contains a picture with a picture output flag equal to 1 in the i-th output layer set (OLS) in the CVS in decoding order and follow the access unit that contains a picture with the picture output flag equal to 1 in output order, and
• the third parameter not equal to 0 is used to compute the value of video parameter set maximum latency pictures, which specified the maximum number of access unit containing a picture with the picture output flag equal to 1 in the i-th output layer set that can precede any access unit that contains a picture with the picture output flag equal to 0 in the CVS in output order and follow the access unit that contains a picture with the picture output flag equal to 0 in the decoding order.