METHOD AND APPARATUS FOR ENTROPY ENCODING VIDEO, AND METHOD AND APPARATUS FOR ENTROPY DECODING VIDEO

摘要

Disclosed a method for encoding and decoding video. The decoding method comprises the steps of: determining transformation unit used in an inversion process; determining a context model for the arithmetic decoding of conversion unit effective factor flag indicating whether a transformation factor which is not zero is existed in the transformation unit based on the conversion depth of the transformation unit; and arithmetically decoding transformation unit effective factor flag based on the determined context model.