1. Method for encoding video data, wherein the encoding is based on prediction and update steps, the method comprising the steps of: encoding low-pass frames of an enhancement layer of a spatially scalable video signal, wherein residual prediction on frame level is used, wherein the enhancement layer is structured into groups of pictures (GOPs) and each group of pictures (GOP) of the GOPs comprises a plurality of high-pass frames followed by one of said low-pass frames, and wherein said high pass frames and said low pass frames have assigned sequence numbers; splitting the high-pass frames into two interleaving frame groups; encoding the frames of a first interleaving frame group of said frame groups according to their sequence numbers, wherein residual prediction on frame level is used, wherein the encoding the frames of the first interleaving frame group comprises selection of one of a plurality of encoding modes and wherein at least one of the plurality of encoding modes uses residual prediction on frame level, but none of the plurality of encoding modes uses residual prediction on macroblock level; and encoding the frames of a second interleaving frame group of the frame groups using an encoding method without residual prediction.