Patent ID: 9253483
Filing Date: 2016-02-02
CPC Classification: H04N

Claim Text:
1. A method comprising: determining, by a processor in response to instructions stored on a non-transitory computer readable medium, whether to use a scaling list for a non-default quantization matrix to perform quantization of one or more units of video; identifying a plurality of transform unit sizes; determining a set of unavailable transform unit sizes from the plurality of transform unit sizes that are unavailable for performing a transform of the one or more units of video, wherein determining the set of unavailable transform unit sizes includes: determining a set of available transform unit sizes from the plurality of transform unit sizes that are available for transforming the one or more units of video; generating encoded scaling list data by encoding scaling list data for each available transform unit size from the set of available transform unit sizes; and including the encoded scaling list data in an output bitstream, such that the output bitstream omits scaling list data for the set of unavailable transform unit sizes.