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Convert AVI to MP4

Convert AVI video files to modern MP4 format. Runs entirely in your browser — no upload, no waiting, no watermarks.

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100% private — files never leave your device
Free — no sign up, no watermark

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How to Use Convert AVI to MP4

  1. Upload your AVI file
  2. MP4 is already selected as the output format
  3. Click Process to convert using H.264 encoding
  4. Download the smaller, modern MP4 file

Features

  • Convert AVI to MP4 with modern H.264 encoding
  • Reduce file size — MP4 is typically 2-5x smaller than AVI
  • Process files of any size directly in your browser
  • No sign-up or installation required

Frequently Asked Questions

How do I convert AVI to MP4?
Upload your AVI file, ensure MP4 is selected as the output format, and click Process. The conversion happens locally in your browser.
Will the file size decrease?
Usually yes. AVI files often use older, less efficient codecs. Converting to MP4 with H.264 typically reduces file size by 50-80% with similar visual quality.
Can I convert AVI files from old cameras?
Yes. This tool handles legacy AVI codecs like DivX, Xvid, and MJPEG, converting them to modern H.264 MP4 that plays on any device.

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