Patent ID: 8483285
Filing Date: 2013-07-09
Classification: H04N

Abstract:
1. A method of encoding video data, the method comprising: applying spatial prediction or motion compensation to an original video block within a video frame to generate a prediction video block based on a prediction mode; subtracting the prediction video block from the original video block within the video frame to form a residual block; selecting a transform having a first transform size to apply to the residual block; applying the selected transform to the residual block to generate residual transform coefficients; generating header data indicative of the selected transform, the header data comprising a first syntax element having a first value indicative of at least three transform sizes and a second syntax element indicative of a prediction block size of the prediction video block, wherein the at least three transform sizes comprise at least one N×M transform size and at least one of M and N is equal to or greater than 16, wherein the first value of the first syntax element only in combination with the second syntax element is indicative of the first transform size, wherein the header data further comprises a third syntax element to indicate if the residual transform coefficients include one or more nonzero coefficients; and generating a video signal based on the header data and the residual transform coefficients.