A method and apparatus for coding a color channel in a layered video coder are provided. According to the method and apparatus, if there is at least one color channel that can be skipped during coding of the color channel, a Coded Significant Pattern (CSP) of a macro block, which represents a structure of the color channel, is converted into a CSP with a structure in which the at least one color channel is skipped, and a significant transform coefficient of the macro block is coded using the CSP represented in the structure in which the at least one color channel is skipped.
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