.M4A File Extension

MPEG 4 Audio

The MPEG-4 audio format is used by iPhones. M4As are smaller than MP3s. M4As have better quality. MPEG-4 files store video or audio. MPEG-4 audio-only files use the .m4a extension. This helps distingu...

General Information

Title M4A File Extension
Extension .m4a
Full Form MPEG 4 Audio
File Type Audio File
Developer Apple Inc.
MIME Type audio/mp4

File Function

Primary Function Store audio
Additional Functions Stream audio
Features Lossy, Lossless

File Characteristics

Quality High, Variable
Supports Layers N/A
Supports Transparency N/A
Editable Yes

Use Cases

Music Distribution Yes
Podcasting Yes
Audiobooks Yes

Security and Practices

Security Risks Low
Best Practices Regular updates, Trusted sources

Historical/Version Information

Initial Release 2001
Adoption of AAC Widespread

Associated Types

Similar Extensions .mp3, .aac, .wav

Software Compatibility

Software Usage Policy OS Compatibility
Apple iTunes Free Windows, Mac
VLC Media Player Free Windows, Mac, Linux, Unix
QuickTime Player Free Windows, Mac