Why convert AVI to MP4?

MP4 is universally compatible with all modern devices and platforms. AVI files from older cameras or software may not play on smartphones or modern browsers.

Will I lose video quality?

You can choose the quality level. High quality preserves near-original quality, while lower settings reduce file size.

How large can the AVI file be?

Processing happens in your browser, so very large files (over 2GB) may be slow. For best results, use files under 500MB.

AVI to MP4 Offline Converter

Convert AVI videos to MP4 format completely offline in your browser

No Upload 100% Private Free

Loading Video Processing Engine

This tool uses FFmpeg.wasm for video processing. The first time you use it, it will download the processing engine (~25MB). This only happens once and enables powerful offline video conversion.

Initializing video processor...

Drop your AVI videos here

or click to select AVI files

Conversion Settings

Video Quality

Output Resolution

Fast mode (prioritize speed over compression)

Perfect for Legacy AVI Files

AVI Videos

Convert AVI files from older cameras and software to universally compatible MP4.

Easy Sharing

Share your videos on any platform, device, or social media without issues.

Size Optimization

Reduce file sizes while maintaining quality for easier storage and sharing.

MP4 Works Everywhere

Android Devices

Windows PCs

Web Browsers

Smart TVs

Social Media

Game Consoles

Email Attachments

Cloud Storage