AAC

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File Format
Name AAC
Ontology
Extension(s) .aac, .mp4, .m4a
LoCFDD fdd000114, others
Released 1997

AAC (Advanced Audio Coding) is a compressed audio format defined in MPEG-2 Part 7 (ISO/IEC 13818-7), and in an updated form in MPEG-4 Part 3 (ISO/IEC 14496-3). It was designed to be the successor to MP3.

An AAC file may contain only the raw AAC format, or it may use a multimedia container format such MP4 or QuickTime. AAC is often used for the audio component of a video file.

Contents

Identifiers

Raw AAC files typically use the file extension .aac. In formats based on ISO Base Media File Format, the brand "M4A " is used.

Format LoCFDD
AAC (MPEG-2) fdd000036
AAC (MPEG-2), ADIF fdd000112
AAC (MPEG-4) fdd000114
AAC (MPEG-4) Low Complexity Object fdd000233
MPEG-4 File Format, V.2, with AAC fdd000234
QuickTime Audio, AAC Codec fdd000110

Specifications

Software

Sample files

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