AAC Compressor

  1. Upload your file.

  2. Select the compression option.

  3. Click the Convert button.

What is an AAC file?

Full name

Advanced Audio Coding

Format type

Audio

Developed by

Moving Picture Experts Group (MPEG) with Fraunhofer, Dolby, and others

Description

Lossy audio compression format created as the successor to MP3

File extension

.aac (also .m4a, .mp4)

Technical details

Better quality than MP3 at the same bitrate; supports up to 48 channels and sample rates up to 96 kHz

Associated programs

Apple Music/iTunes, VLC, Windows Media Player, foobar2000

Frequently asked questions

Does compressing AAC reduce sound quality?

Lowering the bitrate reduces file size and can slightly affect quality, but at moderate settings most listeners won’t notice a difference, especially with speech or casual listening.

Is AAC better than MP3?

At the same bitrate, AAC generally sounds better than MP3 because it uses more efficient compression, which is why streaming services adopted it.

How can I make an AAC file smaller for email?

Upload it to Movavi’s online compressor, lower the bitrate, and download the smaller file – all in your browser, with no software to install.

What bitrate should I choose for AAC?

For music, 128–256 kbps keeps good quality; for podcasts or voice, 64–96 kbps is usually plenty and keeps files small.

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