A video decoder may perform, based on an operation mode, at least one of a first decoding operation to restore a first bin value based on a first context value, a second decoding operation to restore a second bin value based on an updated first context value or a second context value, a third decoding operation to restore a third bin value based on the updated first context value or a third context value, and a fourth decoding operation to restore at least one bypass bin value without a context value. Based on the operation mode, the video decoder may output the first bin value, the at least one bypass bin value, the first bin value and the at least one bypass bin value, the first bin value and one of the second and third bin values, or at least one of the first, second, and third bin values.