What is AVI (Audio Video Interleave)?
AVI is a legacy Microsoft video container from 1992, still found in old archives.
AVI files often contain outdated codecs. Converting to MP4 makes them smaller and playable on current devices.
File extensions: .aviMIME types: video/x-msvideo, video/avi
Advantages
- Simple and well known
- Plays in old software
- Many codecs can be used
Disadvantages
- Large files
- No modern features like streaming
- Inconsistent codec support
Typical uses
- Old video archives
- Legacy software
- Old camcorder footage
Compatibility
Windows and VLC play most AVI files; browsers and phones generally do not.
Convert AVI to another format
Convert to AVI from another format
Frequently asked questions
Are my files uploaded to a server?
No. The conversion runs entirely in your browser with local code. Your files never leave your device, and there is no upload.
Is there a file size limit?
There is no limit on our side, but your browser memory is. Images work for very large files; for videos, files above a few hundred megabytes can fail on devices with little memory.
Will the quality suffer?
That depends on the target format and settings. Use the quality option to balance size and detail; lossless targets keep everything the source contained.
Which browsers are supported?
Current versions of Chrome, Edge, Firefox and Safari. Fast hardware paths are used where available, with a compatible fallback otherwise.