Parse an available query, writing the format into @format, and other results into the passed parameters, if the respective parameters are non-%NULL
the format to set for the @segment_start and @segment_end values, or %NULL
the start to set, or %NULL
the stop to set, or %NULL
estimated total amount of download time remaining in milliseconds, or %NULL
See Implementation
Parse an available query, writing the format into @format, and other results into the passed parameters, if the respective parameters are non-%NULL