AVI to MP4 Converter
Bring old AVI videos up to date with MP4. Free and private, right in your browser.
Why convert AVI to MP4?
AVI is an older Windows video format, common for camcorder footage and archived clips. Browsers cannot play it and many modern devices struggle with it. MP4 with H.264 video plays almost everywhere and usually compresses far better, so your old videos become easier to share and take up less space.
How to convert AVI to MP4
Drop your AVI files above with MP4 selected, choose a quality and maximum width, and click Convert All. Keep the tab open while it works, since the conversion runs on your device. Output is capped at 1920 pixels wide.
Frequently asked questions
Will my AVI video lose quality?
Re-encoding is lossy, but at the default quality the result is usually indistinguishable for typical AVI footage. Raise the quality slider if you need to preserve more detail.
Are my files uploaded anywhere?
No. Smushify converts everything inside your browser using WebAssembly. Your files are never sent to a server, so it is safe for private photos, client work and unreleased videos.
Is Smushify free?
Yes. There are no sign-ups, watermarks or file limits beyond what your device can handle. You can convert as many files as you like.
Can I convert many files at once?
Yes. Drop in as many files as you like, use "Format for all" and "Quality for all" to set every file in one go, then click Convert All and Download All.
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