AVI to MP4 Converter
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Free AVI to MP4 Converter

Convert AVI videos to MP4 right in your browser, including old digital camera clips and DivX or Xvid files. The video is converted to H.264 with AAC audio, the MP4 that plays on phones, TVs and editors. No sign-up, no watermark, and your video never leaves your device.

No file handy?

Drop your AVI video here

or click to browse — camera clips, DivX and Xvid welcome

Your video never leaves your device. The conversion runs entirely in your browser. Privacy policy.

Large videos take a few minutes to convert. Keep this tab open until it finishes.

Need a different format? Use the all-in-one converter — video, audio and image formats in one tool.

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About AVI to MP4 conversion

AVI is an older Windows video format. Plenty of digital cameras and camcorders recorded it, and many DivX and Xvid files use it. Modern phones, Macs and upload forms often will not play or accept AVI. Converting AVI to MP4 here re-encodes the video to H.264 with AAC audio, so old footage plays on current devices.

How to convert AVI to MP4

What people use it for

Good to know: large videos take a few minutes to convert, and higher resolutions take longer.

Why SnipSound

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Frequently Asked Questions

How do I convert AVI to MP4?▼
Drop your AVI file onto the page and click Convert to MP4. The video is converted to H.264 with AAC audio, then you preview the MP4 and download it. Everything runs in your browser, and your video never leaves your device.
Will it work with DivX and Xvid AVI files?▼
Yes. DivX and Xvid are common codecs inside AVI files, and the converter reads both.
Does converting AVI to MP4 lose quality?▼
The video is re-encoded, so it is not a bit-for-bit copy, but it stays close to the original. The MP4 can be larger than the AVI, because the conversion favours speed in your browser over the smallest file.
How long does it take?▼
Small clips take seconds. Because the video is re-encoded, large files take a few minutes, and 1080p or 4K video takes longer than lower resolutions. Keep the tab open until it finishes.
Is my video uploaded to a server?▼
No. The conversion runs on your own device using FFmpeg compiled to WebAssembly, so your video never leaves your device.
Is there a file size limit?▼
No fixed cap. In our testing a 1 GB file converted on a desktop computer and on a mid-range Android phone. iPhones give browsers less memory, so very large files may fail there.