AVI files. If you have been using computers since the 2000s, you probably have a folder somewhere with a bunch of these. Maybe a collection of music videos from Limewire (if that detail dates me, so be it). Maybe old family videos from a camcorder. Maybe security footage from a DVR that refuses to export in any other format.
Whatever you have got, you want the audio out of it. As an MP3. Without installing some random software that is going to install three toolbars and a search engine you never asked for. Fair enough. Let me show you how.
A Brief History of AVI (and Why It Won't Die)
AVI stands for Audio Video Interleave, and Microsoft created it back in 1992. Let that sink in. This format is over 30 years old. In tech terms, that is ancient.
It was the dominant video format through the entire early internet era. Napster era music videos? AVI. Those terrible quality clips people shared on forums? AVI. Early webcam recordings? AVI.
The format has been effectively replaced by MP4 and MKV for new content, but it refuses to completely go away. Here is why you still encounter AVI in 2026:
- Security cameras. Many CCTV systems still default to AVI output. Nobody upgrades surveillance system firmware.
- Old camcorders. Mini DV and early digital camcorders exported AVI. Millions of family archives are in this format.
- Screen recorders. Some basic screen capture tools still use AVI for uncompressed recording.
- Legacy collections. If you hoarded videos in 2005, they are probably AVI. And there is nothing wrong with that.
How to Actually Do the Conversion
Here is the simplest method. No installations, no accounts, no credit card.
- Open GetMP3.video in your browser
- Drag your AVI file onto the page (or click to browse)
- Choose your MP3 quality (I recommend 192kbps for most things)
- Hit convert
- Download your MP3
The entire thing happens in your browser. The file stays on your computer. No upload progress bar to sit through. No waiting for some server to process it. Your device's processor handles the conversion using FFmpeg compiled to WebAssembly.
For a typical 4-minute music video, you are looking at maybe 5-10 seconds of conversion time. For a 2-hour recording, maybe 30-60 seconds depending on your hardware.
Why AVI Makes Conversion Interesting
One thing about AVI that makes it slightly different from converting MP4 or MKV: the audio codec inside can be almost anything.
| Audio in AVI | Common Source | Quality to Expect |
|---|---|---|
| PCM (uncompressed) | Screen recorders, pro cameras | Excellent (lossless source) |
| MP3 | DivX/Xvid rips | Good (already MP3) |
| AC3 (Dolby Digital) | DVD rips | Very good |
| WMA | Windows Movie Maker | Decent |
If your AVI already has MP3 audio inside (which was super common with DivX videos), the conversion is essentially just extracting what is already there. Minimal quality loss.
If it has PCM uncompressed audio (from screen recordings or professional cameras), you are starting with perfect quality source material. The resulting MP3 will sound great at any bitrate.
What Bitrate Should You Choose?
I am going to save you from the audiophile rabbit hole. Here is the practical advice:
- 128kbps is fine for voice recordings, meetings, lectures. Saves space and speech sounds perfectly fine.
- 192kbps is the "just use this" option. Good enough for music, small enough for practical storage.
- 256kbps if you are somewhat picky about audio quality and have the storage.
- 320kbps if you want the mathematical maximum. Marginally better than 256 but uses noticeably more space.
Real talk: in a blind listening test with normal headphones, most people cannot reliably tell 192kbps from 320kbps. I know that sounds like heresy in certain corners of the internet. The science backs it up though. Multiple peer-reviewed studies have shown transparent quality at 192kbps for the majority of listeners on consumer audio equipment.
Batch Converting Multiple AVI Files
Got a whole folder of AVI files? GetMP3.video supports batch mode. Toggle it on, select all your files, and each one gets processed in sequence. You get individual MP3 files for each video.
This is particularly handy if you are converting an old CD or DVD collection, or processing multiple security camera clips. Instead of doing them one by one, load them all up and let it run.
Converting AVI When Your Computer Is Old
Since the conversion runs in your browser using WebAssembly, your processor does the work. If your computer is from 2015 or newer, you should be fine. Older machines might take longer but will still get the job done.
If you are working with very large AVI files (2GB+) on a machine with less than 4GB of RAM, you might hit memory limits. In that case, try closing other browser tabs first. Chrome in particular likes to hoard memory, so giving it a clean workspace helps.
Frequently Asked Questions
Is AVI still used in 2026?
For new content, rarely. But millions of legacy files exist in AVI format from the 2000s and 2010s. Security cameras and some industrial equipment still output AVI. It is not dead, just retired.
Why are my AVI files so huge?
AVI often uses less efficient compression than modern formats. An AVI with DivX video might be 700MB where the same content in H.264 MP4 would be 300MB at equal quality. The audio portion is typically only 5-15% of the file size.
Can I do this on my phone?
GetMP3.video works on mobile browsers, but large AVI files may push against phone memory limits. For files under 200MB, phones handle it fine. For bigger files, use a computer.
What audio format is inside my AVI?
Usually MP3, PCM (uncompressed), AC3 (Dolby Digital), or WMA. The converter handles all of these automatically. You do not need to know what is inside; just drop the file and it works.