Patent ID: 8031776

Claim:
A method for decoding a bitstream containing a plurality of layers, the method comprising: reconstructing at least one frame on a base layer by applying a predetermined coder/decoder (codec) to information about the base layer in the bitstream; generating at least one residual frame including at least one skipped frame using information other than the base layer in the bitstream; inserting the at least one frame on the base layer into at least one respective position of the at least one skipped frame; and performing inverse temporal filtering on the inserted at least one frame on the base layer and the at least one residual frame and reconstructing a video sequence, wherein the inverse temporal filtering is performed by using a first sum of the at least one frame on the base layer and a corresponding residual frame when difference coding is used to generate the corresponding residual frame and by using a second sum of the corresponding residual frame and a predicted frame obtained from a reference frame number and a motion vector when temporal predictive coding is used to generate the corresponding residual frame.