Patent ID: 8571099

Claim:
A method for decoding video comprising: (a) receiving quantized coefficients representative of a block of video representative of a plurality of pixels; (b) dequantizing said quantized coefficients to generate dequantized coefficients having a first bit depth being transform coefficients; (c) subsequent to said dequantizing inverse transforming said dequantized coefficients said being transform coefficients having said first bit depth using a first one dimensional inverse transform to a result having a second bit depth and subsequently inverse transforming said result having a third bit depth using a second one dimensional inverse transform to determine a decoded residue having a fourth bit depth; (d) wherein said result of said first one-dimensional inverse transform having said second bit depth are shifted different amounts having said second bit depth to said third bit depth different than said second bit depth using a shifting process based upon the magnitude of said dequantized coefficients and a transform size parameter.