Video coding method, computer device, and storage medium

An apparatus of video coding, comprising circuitry configured to:

• receive a current picture in a group of pictures (GOP) of a layered coding structure in video sequence, the current picture having two reference pictures;
• determine a current layer of the current picture in the layered coding structure;
• determine a current quantization parameter (QP) offset of the current picture according to the current layer of the current picture;
• determine reference QPs corresponding to the two reference pictures of the current picture;
• determine a current QP of the current picture according to the reference QPs and the current QP offset;
• and
• coding the current picture according to the current QP.

A non-transitory computer-readable medium storing a program executable by a processor to perform a method, the method comprising:

• receiving a current picture in a group of pictures (GOP) of a layered coding structure in video sequence, the current picture having two reference pictures;
• determining a current layer of the current picture in the layered coding structure;
• determining a current quantization parameter (QP) offset of the current picture according to the current layer of the current picture;
• determining reference QPs corresponding to the two reference pictures of the current picture;
• determining a current QP of the current picture according to the reference QPs and the current QP offset;
• and
• coding the current picture according to the current QP.