Sample M4A File — AAC in MP4 Container

Download a free M4A file (AAC audio in MP4 container). M4A is the format used by iPhone voice memos, iTunes purchases, and Apple Music downloads. Test M4A detection and playback in your app.

sample.m4a

3.00 MB

120s · 128kbps · 44100Hz · stereo

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Verified file details

Filename: sample.m4a
Exact size: 3,145,728 bytes
Displayed size: 3.00 MB
MIME type: application/octet-stream
Duration: 2m
Bitrate: 128 kbps
Sample rate: 44,100 Hz
Channels: stereo
License: CC0 / Public Domain
Download URL: https://cdn.truefilesize.com/aac/sample.m4a

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Other AAC files

sample-1mb.aac

1 MB

60s · 128kbps · 44100Hz · stereo

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Verified file details

Filename: sample-1mb.aac
Exact size: 1,048,576 bytes
Displayed size: 1 MB
MIME type: application/octet-stream
Duration: 1m
Bitrate: 128 kbps
Sample rate: 44,100 Hz
Channels: stereo
License: CC0 / Public Domain
Download URL: https://cdn.truefilesize.com/aac/sample-1mb.aac

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sample-5mb.aac

5 MB

300s · 128kbps · 44100Hz · stereo

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Verified file details

Filename: sample-5mb.aac
Exact size: 5,242,880 bytes
Displayed size: 5 MB
MIME type: application/octet-stream
Duration: 5m
Bitrate: 128 kbps
Sample rate: 44,100 Hz
Channels: stereo
License: CC0 / Public Domain
Download URL: https://cdn.truefilesize.com/aac/sample-5mb.aac

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Frequently Asked Questions

What is the difference between AAC and M4A?

AAC is the audio codec. M4A is a file container (MP4/MPEG-4) that wraps AAC audio. M4A = AAC codec + MP4 container. Similar to how MP3 is both a codec and container, but M4A separates them.

Can I rename .m4a to .mp4?

Technically yes — M4A is just MP4 without video. But most apps expect .m4a for audio-only files. The MIME type is audio/mp4 for M4A vs video/mp4 for MP4 video.