How to AVI to MP4 Online

  1. 1

    Upload AVI

    Drag and drop your AVI video into the converter.

  2. 2

    Convert to MP4

    Click Convert. Your video is re-encoded as H.264 MP4.

  3. 3

    Download MP4

    Download your modern, compatible MP4.

Why Use FileSwitch for AVI to MP4?

  • Re-encodes legacy AVI to H.264 MP4
  • Quality presets: low, medium, high
  • Resolution scaling up to 4K
  • Frame rate control up to 60 fps
  • Fast-start for instant streaming

Frequently Asked Questions

Why convert AVI to MP4?

AVI files are large and poorly supported on modern devices; MP4 is smaller and plays everywhere.

Will it handle old AVI codecs?

Yes, FFmpeg decodes the wide range of codecs found in AVI files and re-encodes to H.264.