Default JPEG encoding quaility. Specifies the default quality setting for JPEG-encoded reply images.
Integer number and flag, separated by a comma. The first value is in the range 1…100 and defines the quality. The second value may be 0 for normal behavior, or 1 to disable the chromaticity down-sampling usually employed by JPEG encoders.
default::JpegQuality if not defined or if empty.