AVI to AAC Converter

Extract AAC Audio from AVI Online

This converter pulls the audio track out of an AVI video and re-encodes it as a standalone AAC file — the format iPhones, iPads, YouTube, and most game consoles play natively. It is the right tool when you only want the sound from a clip (a lecture, a music video, a voice memo wrapped in video) and don't need the picture. AAC was designed as the successor to MP3 and generally sounds better at the same bitrate, so you keep more of the original quality while dropping the heavy video stream.

How to Convert AVI to AAC

1. Upload Your AVI File: Drag and drop your AVI onto the page or click "+ Add Files" to browse. You can queue several clips and convert them with the same settings.
2. Pick a Quality Preset: Under Advanced Options, leave Quality Preset on "Very High (Recommended)" for near-source audio, or step it down to save space. The AAC codec is selected automatically.
3. Set a Bitrate or Target Size (Optional): Switch to Custom Bitrate (e.g. 192 kbps), Constant Bitrate, or Specific file size if you need a fixed output. Use Trim to grab only part of the clip.
4. Convert and Download: Click "Convert" and save your AAC file. No sign-up, no watermark. Files are uploaded over an encrypted connection, processed on our servers, and deleted automatically after a few hours — never shared or made public.

AAC vs MP3 — Which Audio Format to Pick

If your audio is bound for an Apple device, a phone, or streaming, AAC is the better choice. If you need a file that plays on the oldest possible hardware (car stereos, basic MP3 players), use AVI to MP3 instead.

Frequently Asked Questions

Does converting AVI to AAC lose audio quality?

AAC is a lossy format, so a re-encode is never bit-perfect — but because the audio inside an AVI was already compressed, the practical loss is small at a sensible bitrate. Encoding to 192 kbps or higher keeps the result transparent to most listeners. Going to a very low bitrate (under 96 kbps) is where audible artifacts appear.

What bitrate should I use for AAC?

For music, 192–256 kbps gives near-CD quality in AAC. For speech, podcasts, or lectures, 96–128 kbps is plenty and produces a much smaller file. The default "Very High" preset targets the upper end; drop to "Medium" or set a Custom Bitrate of 128 kbps if size matters more than fidelity.

Will the AAC file play on my iPhone or in iTunes?

Yes. AAC is the native audio codec for iOS, macOS, and the iTunes/Apple Music ecosystem — it plays without any extra app or conversion. It is also the standard audio format for YouTube uploads, PlayStation, and Nintendo consoles, so a single AAC file covers most modern playback targets.

How large will the output AAC file be?

Only the audio survives the conversion, so the file shrinks dramatically versus the source AVI. In our testing, a 60-minute AVI lecture (originally about 700 MB with video) produced a roughly 86 MB AAC file at 192 kbps — small enough to email or sync to a phone. At 128 kbps the same audio drops to around 57 MB.

How do I make the AAC even smaller for sharing?

Lower the bitrate first — dropping from 256 kbps to 128 kbps nearly halves the size with little audible difference for speech. If you still need to hit a strict cap (Gmail's 25 MB attachment limit, for example), choose Specific file size to target an exact value, or run the result through the Audio Compressor for finer control.