Convert MP4 to AVI
Convert your MP4 video files to AVI directly in your browser.
How to convert video in 3 steps
Choose a MP4 video file.
Click convert to AVI.
Download your AVI video.
Format descriptions
MP4 — MP4 is the most widespread and compatible video container. It supports H.264/HEVC and AAC codecs, making it ideal for streaming, the web and mobile devices.
AVI — AVI is one of the oldest video containers, developed by Microsoft. It is widely compatible but offers less efficient compression and larger files.
Technical comparison: MP4 vs AVI
Technical breakdown of the MP4 and AVI specifications: compression, colour, transparency and animation support.
| Property | MP4 | AVI |
|---|---|---|
| Specification | MP4 (MPEG-4 Part 14) | AVI (Audio Video Interleave) |
| Media type | Video | Video |
| Compression | Lossy · H.264 / HEVC + AAC | Lossy · DivX / XviD / MPEG-4 + PCM |
| Color space / bit depth | YUV 4:2:0, 8-10 bit | 24-bit YUV |
| Transparency | Not supported | Not applicable |
| Animation | Yes (animated) | Yes (animated) |
| Best for | MP4 is the most widespread and compatible video container. It supports H.264/HEVC and AAC codecs, making it ideal for streaming, the web and mobile devices. | AVI is one of the oldest video containers, developed by Microsoft. It is widely compatible but offers less efficient compression and larger files. |
What happens when converting MP4 to AVI?
The MP4 data is decoded inside your browser with WebAssembly and re-encoded to the AVI specification, so no file is ever uploaded to a server. AVI uses lossy compression: the file gets far lighter, but a small amount of fine detail is discarded in the process.
Frequently Asked Questions
What is video conversion?
Video conversion changes a video file from one format to another, for example from MP4 to AVI, while keeping the video 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 MP4 video files to AVI, all in your browser.
Is it really free and unlimited?
Yes, the tool is completely free and you can convert as many video files 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 AVI format, ready to download and use.
About the video converter
Convert MP4 to AVI video online 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.
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