Patent ID: 8264968
Filing Date: 2012-09-11
Classification: H04N

Abstract:
1. A method for decoding a video signal, the method comprising: deriving position information of a virtual macroblock corresponding to a frame macroblock of an enhanced layer; deriving position information of a corresponding macroblock in a base layer based on the position information of the virtual macroblock, the corresponding macroblock being a field macroblock in a MacroBlock Adaptive Frame Field frame (MBAFF frame) and the MBAFF frame being a frame including macroblocks adaptively decoded as one of a frame macroblock and a field macroblock; obtaining motion information of the corresponding macroblock based on the position information of the corresponding macroblock; predicting motion information of the frame macroblock of the enhanced layer by using the motion information of the corresponding macroblock, the motion information including a motion vector; and decoding the frame macroblock of the enhanced layer by using the predicted motion information, wherein the predicting step includes multiplying a vertical component of the motion vector of the corresponding macroblock by two.