AVI to AAC Converter — Free, Online, No Upload

AVI was the dominant video format of the 1990s and 2000s, and a massive amount of footage — home videos, early digital camera recordings, DVD rips — still exists in this container. But the audio inside those files, often encoded as MP3 or raw PCM, is invisible to modern streaming platforms, Apple devices, and mobile apps that have moved entirely to AAC.

AAC has been the dominant audio codec for over a decade. It powers YouTube, Spotify, Apple Music, iTunes, and every Apple device ever made. It is more efficient than MP3 at equivalent bitrates, meaning better sound quality in smaller files. Android and iOS both support it natively, and every major browser can decode it without plugins.

Converting AVI audio to AAC gives you a modern, compact audio file that works everywhere. The converter extracts the audio from the AVI and encodes it as AAC. If your source AVI has good-quality audio, the AAC output at 192 kbps will be transparent to most listeners. If the original audio was already compressed, converting adds a small generational loss — unavoidable when going from one lossy format to another. For spoken word, podcasts, or background music, this loss is negligible.

Typical sizes: AVI 200–600 MB (1 minute 1080p); AAC 2–5 MB (3-minute song).

AAC output is encoded at 192 kbps.

Re-encoding one lossy format into another adds a second round of compression.