The invention provides a codec architecture for multiple layer video coding, and relates to the video coding field. A video coding method includes the steps: receiving coding data of a base layer (BL), coding data of an enhancement layer (EL) and inter-layer prediction (ILP) information, wherein the ILP information is subpackaged in a network abstract unit separated from a network abstract unit containing the BL coding data and the EL coding data; based on the BL coding data, reconstructing a BL picture; executing a picture level inter-layer process for the reconstructed BL picture so as to generate an inter-layer reference ILR picture based on the subpackaged ILP information; and based on the ILR picture and the EL coding data, reconstructing an EL picture.