.aac AAC audio
Audio
| MIME type | audio/aac |
|---|---|
| Description | AAC audio |
| Acronym | AAC – Advanced Audio Coding |
| Category | Audio |
| Signature (magic bytes) | 41 44 49 46 (ADIF) |
| Other extensions | .adts, .ass |
Frequently asked questions
What is a .aac file?
A .aac file is a “AAC audio” (MIME type audio/aac). AAC stands for Advanced Audio Coding.
How do I open a .aac file?
With a media player such as VLC, which plays almost every audio format; on Windows also Media Player, on macOS Music or QuickTime. To edit it, use Audacity for example.
How can you tell a genuine .aac file?
By the bytes at the start of the file, the signature (magic bytes): 41 44 49 46 (ADIF). On Linux and macOS, file --mime-type example.aac checks the real type regardless of the extension.
Which MIME type belongs to .aac?
The MIME type is audio/aac. In the Apache web server: AddType audio/aac .aac; in nginx: types { audio/aac aac; }.