Compare
M4A vs WAV
M4A and WAV are audio containers; the extension alone does not identify the codec or quality. Consider delivery size and compatibility versus recording and editing needs.
Which format should you choose?
For distribution, check which codec (such as AAC or ALAC) is inside M4A and its settings. For recording or editing, check the codec, sample rate, and bit depth in WAV and whether uncompressed PCM is required.
Good fit for M4A
Audio distribution
- Sending an audio-only MPEG-4 file to a player with known codec support
Good fit for WAV
Recording and editing
- Keeping a source recording at a known sample rate and bit depth
Basic information
| Field | M4A | WAV |
|---|---|---|
| Extension | .m4a | .wav |
| MIME type | audio/mp4 | audio/wav |
| Common uses | Audio distribution | Recording and editing |
| How to open | Open with a compatible player or editor; inspect the internal codec if playback fails. | Open with a media player, DAW, or audio editor and inspect the stream properties. |
| Export or convert | When exporting to MP3, check whether lossy re-encoding will reduce quality. | For distribution, export to a supported format such as MP3 while keeping the editing original. |
Choose by use case
Sending an audio-only MPEG-4 file to a player with known codec support
Audio distribution
M4AKeeping a source recording at a known sample rate and bit depth
Recording and editing
WAVKey point 1
M4A is an MPEG-4-family container that may carry AAC, ALAC, or other supported audio.
More on the differencesKey point 2
WAV is RIFF-based and often carries PCM, but the codec can vary.
More on the differencesFrequently asked questions
Is WAV always uncompressed?
No. WAV is a container; inspect the audio codec and parameters.