Be Converter
Video Converter

AVI to MP4 Converter

Convert AVI videos to MP4 format for modern playback compatibility and smaller file sizes. Free and instant.

Select AVI Video

Drop your AVI video here for MP4 conversion

or drag file here

Maximum 50MB • 1 file at a time

Related Conversions

MP4 → WEBM
WEBM → MP4
MP4 → GIF
MOV → MP4
MKV → MP4
MOV → JPEG

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How to Use

  1. 1

    Upload AVI Video

    Click the upload button or drag & drop your AVI video file

  2. 2

    Wait for Processing

    Conversion starts automatically with real-time progress tracking

  3. 3

    Preview Result

    Preview the MP4 video before downloading to verify quality

  4. 4

    Download MP4

    Click "Download" to save your converted MP4 video file

Why Use Be Converter?

Browser-Based Processing

Convert AVI to MP4 entirely in your browser. No uploads, no waiting for server processing

Quality Preserved

Modern H.264 encoding maintains excellent quality while significantly reducing file size

Fast Conversion

Hardware-accelerated processing converts your AVI videos to MP4 in seconds

Privacy & Security

All processing happens locally in your browser. Videos never uploaded to any server

No Watermarks

Clean MP4 output with no watermarks, branding, or quality restrictions

Free & Unlimited

No registration required. Unlimited conversions. Completely free forever

Frequently Asked Questions

Why convert AVI to MP4?
AVI is an older format that produces large files and has limited support on modern devices and browsers. MP4 offers better compression, smaller file sizes, and universal playback compatibility across all devices, platforms, and web browsers.
Will the converted MP4 be smaller than the original AVI?
Yes, typically MP4 files are 50-70% smaller than AVI files at equivalent quality. AVI uses older, less efficient codecs while MP4 uses modern H.264 compression that delivers excellent quality at much smaller file sizes.
Does converting AVI to MP4 lose quality?
Our converter uses high-quality H.264 encoding settings. While AVI and MP4 use different codecs, the quality difference is typically minimal. The significant reduction in file size makes the conversion worthwhile.
What is the maximum file size?
You can convert AVI videos up to 50MB in size. Since AVI files tend to be large, you may need to convert shorter clips or lower resolution videos.
Are my videos safe and private?
Absolutely! All AVI to MP4 conversion happens locally in your web browser. Your videos never upload to any server. Once you close the page, all data is permanently deleted.

About AVI to MP4 Converter

Our professional AVI to MP4 converter modernizes your legacy video files. AVI was once the standard for Windows video but has been surpassed by MP4 in every way. Converting to MP4 reduces file sizes by up to 70%, improves compatibility across all modern devices, and enables smooth web playback. Free, instant, and works entirely in your browser.

Expert Tips for AVI to MP4 Conversion

  • Convert old AVI home videos to MP4 to save disk space while preserving memories
  • AVI files from old digital cameras convert beautifully to MP4 for modern viewing
  • Use H.264 High Profile for the best quality-to-size ratio when modernizing AVI archives
  • Batch convert your entire AVI video library to MP4 for consistent format across all devices
  • MP4 enables streaming and sharing that AVI simply cannot support on modern platforms