This part of ISO/IEC 11694 defines the data format for optical memory cards necessary to allow compatibility and interchange between systems using the linear recording method.
Information Technology - Coding of Audio-Visual Objects - Part 12: ISO Base Media File Format AMENDMENT 1: Support for Timed Metadata, Non-Square Pixels and Improved Sample Groups
This PDF includes Technical Corrigendum 1
1 Scope
This International Standard defines the MP4 file format, as derived from the ISO Base Media File format.