The present invention at leas comprises an input section 10 for inputting a file, specific media information generation section 12 for generating specific media information, copy restricted file identification section 13 for identifying whether the file is a copy restricted one or not, file conversion section 14 for scrambling the inputted file into a format that can be played back on a specific program, and file recording section 16 for writing the scrambled file or inputted file into the logical address area of a recording media and also writing the specific media information into an area other than the logical address area. If the file is a copy non-restricted one, it is recorded as it. If the file is a copy restricted one, a scrambled file is recorded and the specific media information is written into an area other than the logical address area.