Apple MPEG-4 Developer Documentation

Technical specifications for storing MPEG-4 audio and video streams within container file formats.

Library of Congress: MPEG-4 Audio Format Sustainability

Digital preservation analysis, specifications, and characteristics of the MPEG-4 audio container format.

MP4 Registration Authority

Official registry for format identifiers used in the MPEG-4 video container family.

MPEG Industry Forum – SVTA University

Organization promoting the adoption of MPEG-1, MPEG-2, and MPEG-4 video standards.

MPEG Licensing Authority

Administrator of patent pools for standards including MPEG-4 audio and video formats.

MPEG-4 Structured Audio - Wikipedia

MPEG-4 Structured Audio (SA) is an ISO/IEC standard for describing sound and synthetic music. It specifies a language to define music synthesis algorithms.

Sound.Is: MPEG-4 Audio Standards

Overview of MPEG-4 audio compression algorithms, bitrates, and streaming format standards.