Convert AVI to MP3
Extract the audio from your AVI video files and save it as MP3, directly in your browser.
How to convert video to audio in 3 steps
Choose a AVI video file.
Click convert to MP3.
Download your MP3 audio.
Format descriptions
AVI — AVI is one of the oldest video containers, developed by Microsoft. It is widely compatible but offers less efficient compression and larger files.
MP3 — MP3 is the best-known compressed audio format. It trades a little quality for much smaller files, making it perfect for music and audiobooks.
Technical comparison: AVI vs MP3
Technical breakdown of the AVI and MP3 specifications: compression, colour, transparency and animation support.
| Property | AVI | MP3 |
|---|---|---|
| Specification | AVI (Audio Video Interleave) | MP3 (MPEG-1 Audio Layer III) |
| Media type | Video | Audio |
| Compression | Lossy · DivX / XviD / MPEG-4 + PCM | Lossy · Psychoacoustic model |
| Color space / bit depth | 24-bit YUV | 16-bit, 44.1 kHz |
| Transparency | Not applicable | Not applicable |
| Animation | Yes (animated) | No (static) |
| Best for | AVI is one of the oldest video containers, developed by Microsoft. It is widely compatible but offers less efficient compression and larger files. | MP3 is the best-known compressed audio format. It trades a little quality for much smaller files, making it perfect for music and audiobooks. |
What happens when converting AVI to MP3?
The AVI data is decoded inside your browser with WebAssembly and re-encoded to the MP3 specification, so no file is ever uploaded to a server. MP3 uses lossy compression: the file gets far lighter, but a small amount of fine detail is discarded in the process. AVI supports animation while MP3 does not, so only the first frame is kept. Audio is re-encoded with the MP3 codec while keeping the original duration, so audio and video stay in sync.
Frequently Asked Questions
What is video to audio conversion?
Video to audio conversion extracts the sound track from a video file, for example from AVI to MP3, keeping only the audio content.
Are my video files uploaded?
No. This tool processes video files directly in your browser. Your video files are never sent to a server.
Which video formats are supported?
This tool converts the audio of AVI video files to MP3, all in your browser.
Is it really free and unlimited?
Yes, the tool is completely free and you can convert as many videos as you want, with no limits.
Does it work on mobile too?
Yes, it works on any modern device, including smartphones, tablets and desktop computers.
Which format will the result be in?
The converted file will always be in MP3 format, ready to download and use.
About the video to audio converter
Extract and convert the audio from your AVI videos to MP3 for free. Everything happens in your browser: your files are never uploaded to a server, and you need no downloads or sign-up to get started.
See also:
- Video to Audio Converters
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- Convert AVI to WAVExtract and convert the audio from your AVI videos to WAV for free. Everything happens in your browser: your files are never uploaded to a server, and you need no downloads or sign-up to get started.
- Convert AVI to OGGExtract and convert the audio from your AVI videos to OGG for free. Everything happens in your browser: your files are never uploaded to a server, and you need no downloads or sign-up to get started.
- Convert AVI to M4AExtract and convert the audio from your AVI videos to M4A for free. Everything happens in your browser: your files are never uploaded to a server, and you need no downloads or sign-up to get started.