A video decoder comprising (i) a post-processing filter block, (ii) a
comfort noise addition block and (iii) a video value/range adjustment
block, where the comfort noise addition block is integrated into a video
output path of the video decoder. The post-processing filter block may be
configured to perform one or more of noise reduction, spatial filtering
and temporal filtering on luminance data. The comfort noise addition
block may be configured to add comfort noise to the luminance data. The
video value/range adjustment block may be configured to adjust one or
both of a value and a range of the luminance data.