Compare
WAV vs AAC
WAV is an audio container often used for uncompressed PCM editing material. AAC is an audio compression codec commonly stored inside containers such as M4A or MP4. They are not the same kind of format, so inspect both the container and the encoded stream.
Which format should you choose?
Choose WAV when an editing or mastering workflow requires uncompressed PCM. Choose AAC in a supported container when smaller delivery files matter and the target players support it.
Good fit for WAV
Recording and editing
- Keeping a source recording at a known sample rate and bit depth
Good fit for AAC
Audio streaming and video soundtracks
- Distribution to players that support the selected AAC profile
Basic information
| Field | WAV | AAC |
|---|---|---|
| Extension | .wav | .aac |
| MIME type | audio/wav | audio/aac |
| Common uses | Recording and editing | Audio streaming and video soundtracks |
| How to open | Open with a media player, DAW, or audio editor and inspect the stream properties. | Open with an AAC-capable player. If playback fails, inspect the container and codec profile. |
| Export or convert | For distribution, export to a supported format such as MP3 while keeping the editing original. | Converting AAC to MP3 adds another lossy encoding; retain the editing master separately. |
Choose by use case
Keeping a source recording at a known sample rate and bit depth
Recording and editing
WAVDistribution to players that support the selected AAC profile
Audio streaming and video soundtracks
AACKey point 1
WAV names a container and often carries PCM, but other encodings are possible.
More on the differencesKey point 2
AAC is a lossy audio codec commonly carried in M4A or MP4.
More on the differencesMore on the differences
Use the format and settings required by the receiving editor or playback environment. Compare AAC bitrate and encoder settings, and audition the result; an extension alone does not determine quality.
- WAV is a container, not a codec.
- AAC is an audio codec, commonly stored in an M4A or MP4 container.
- Size and perceived quality depend on encoding settings and playback conditions.
Frequently asked questions
Can I compare WAV and AAC by extension alone?
No. WAV is a container and AAC is a codec. Check the actual encoded stream, container, settings, and player support.