The 'MP4' Registration AuthorityMP4RAOfficial Registration Authority for the ISOBMFF family of standards What it is for This site is the registration authority for code-points in "MP4 Family" files. Within the documentation on this site are code-points from specifications both using and related to the ISO specifications for which this is the formal registry. Some MPEG systems code-points are here, including MPEG-4 ObjectType and
