AVI to MP3 Converter
Convert AVI video files into MP3 audio. The right path for extracting sound from old camcorder footage, screen recordings, archived AVI files, and any legacy video that needs to become a portable audio file.
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AVI (.avi) · Max 20 MB
Free — 10-second preview, 5 conversions/month. Upgrade for unlimited
What is AVI?
Audio Video Interleave — Microsoft's legacy video container from 1992. Common in older camcorder footage, screen recordings, and archived video files. Extract the audio track to a modern audio format.
What is MP3?
The most widely used audio format. Great compatibility, small file size. Ideal for music, podcasts, and general use.
Why Convert AVI to MP3?
AVI (Audio Video Interleave) was Microsoft's standard video container from 1992 and dominated digital video through the early 2000s. You'll encounter it everywhere old: digital camcorder recordings, screen captures, ripped DVDs (sometimes), training videos, and decades of archived footage. The audio inside is typically MP3, PCM, or AC-3 depending on the source. Most modern audio software, music apps, and podcast platforms either don't play AVI directly or do so awkwardly. Converting to MP3 gives you a portable audio file that works on every device made in the last 20 years — phones, car stereos, podcast platforms, music libraries. The conversion strips the video stream entirely (your original AVI is untouched) and re-encodes the audio to MP3 at your chosen bitrate. AudioUtils runs the entire conversion in your browser using FFmpeg WebAssembly — your file never leaves your device.
Who Uses This Converter
Old camcorder audio extraction
Convert family camcorder AVI files into MP3 audio — voice memories, interviews, or background music from old recordings.
Screen recording soundtracks
AVI-based screen recordings (Camtasia, OBS Studio with AVI output) often contain narration audio worth extracting for podcasts or tutorials.
Training and corporate video archives
Pre-2010 corporate training libraries are full of AVI. Extract audio to migrate content to modern e-learning platforms.
DVD rip audio
If you have legally-ripped DVD content as AVI, extract just the audio track (commentary, music, dialogue) for editing or sharing.
Frequently Asked Questions
What audio is inside an AVI file?
It varies. Common audio codecs in AVI: MP3 (most common for consumer AVI), PCM (uncompressed), AC-3 (Dolby Digital, common in ripped DVDs), or various legacy codecs (DivX Audio, Lame ACM, ADPCM). AudioUtils detects the source codec automatically and re-encodes to clean MP3.
Will the conversion preserve the audio quality?
Yes for typical sources. Old camcorder AVI files usually have MP3 audio at 128-192 kbps — converting to MP3 at 192-256 kbps preserves that quality without additional artifacts. AVI files with PCM audio convert cleanly to MP3 at any bitrate you want. The conversion is lossy, so re-encoding from a lossy source loses a small amount of quality.
Can I extract audio from a DVD-ripped AVI?
Yes if the AVI was decrypted before saving (most DVD rip tools strip protection). The audio is typically AC-3 (Dolby Digital surround) which AudioUtils downmixes to stereo MP3. For multichannel-preserved output, you'd need a desktop tool with surround support.
How long does the conversion take?
Seconds for short clips, a minute or two for long video files. The video stream is discarded entirely (not re-encoded), so the bottleneck is reading the AVI and re-encoding the audio. A typical 1-hour AVI extracts in well under a minute.
What if my AVI is very large?
Free tier handles files up to 20 MB; Pro handles up to 500 MB. Older AVI camcorder footage is often surprisingly small (10-100 MB for a few minutes), but DVD-rip AVIs can exceed 1 GB. For large files, use desktop ffmpeg to pre-extract audio.
Is AVI obsolete?
For new video, yes — AVI has been largely replaced by MP4 and MKV. But it's far from dead in archives: millions of camcorder recordings, old training videos, and legacy archives still exist as AVI. The format will likely be encountered for decades to come, even as new content moves on.
Does this work on AVI from VirtualDub, Camtasia, or other capture tools?
Yes. AudioUtils handles the standard AVI container regardless of the source application. As long as the file is a valid AVI with an audio track, it works.