How do I convert MP4 to AVI?

Upload your MP4 file and click 'Start Processing'. The tool converts it to AVI directly in your browser. Download the result when done.

Why convert MP4 to AVI?

AVI is needed for older Windows applications, legacy video editors, and classic media players that don't support MP4. It's also used in some industrial and scientific applications.

Is the conversion secure?

Yes. Processing is 100% client-side via FFmpeg WebAssembly. Your video never leaves your computer.

What is the maximum file size?

We support files up to 500MB. Performance depends on your device's processing power.

Does conversion affect quality?

The converter preserves the original video and audio quality during format conversion.

MP4 to AVI Video Converter

Convert MP4 files to AVI format instantly in your browser. Our free, secure converter uses client-side FFmpeg to transform modern MP4 videos into AVI for compatibility with legacy editing software, older media players, and classic Windows applications. No uploads, no servers.

FROM

MP4 Video Files

MP4 is the modern standard video format using H.264/H.265 video and AAC audio. While universally supported on modern devices, some legacy software and older systems require the AVI format.

Key Characteristics:

MP4 videos from phones, cameras, or screen recordings

H.264 or H.265 encoded video files

Videos needing legacy format compatibility

Any MP4 video up to 500MB

TO

AVI Video Files

AVI (Audio Video Interleave) is one of the oldest multimedia container formats, developed by Microsoft. It remains widely supported by older Windows applications, legacy editing software, and classic media players.

Key Characteristics:

Compatible with legacy Windows software

Works with older video editing tools

Supported by classic media players

Simple container format with broad codec support

How to MP4 Online - Step by Step

1

Upload Your MP4 Video

Drag and drop MP4 files or browse your device. Upload multiple files for batch conversion. Files up to 500MB supported.

2

Convert to AVI Format

Click 'Start Processing' and your MP4 is converted to AVI with preserved quality. All processing happens in your browser via FFmpeg WebAssembly.

3

Download Your AVI Files

Download converted AVI files individually or as a ZIP archive. Ready for use in legacy software and older players.

Frequently Asked Questions

Technical Specifications

Input Format

MP4 video files

H.264/H.265/MPEG-4 codecs

Up to 500MB per file

Batch: up to 10 files

Output Format

AVI container

MPEG-4 Part 2 video

AAC audio at 128kbps

MIME: video/x-msvideo

Processing

FFmpeg WebAssembly

100% browser-based

Real-time progress

No server uploads

Browser Support

Chrome 60+, Firefox 55+, Safari 12+, Edge 79+

Windows, macOS, Linux

Mobile browsers

No plugins

Additional Resources

External Resources

MP4 - Wikipedia AVI - Wikipedia

Ready to Convert MP4 to AVI?

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MP4 to AVI Converter

Select Your Files

Popular Tools

Compress Video

MP4 to AVI Video Converter

MP4 Video Files

Key Characteristics:

AVI Video Files

Key Characteristics:

How to MP4 Online - Step by Step

Upload Your MP4 Video

Convert to AVI Format

Download Your AVI Files

Why Choose Our MP4 to AVI Video Converter?

Legacy Compatibility

100% Private & Secure

Fast Conversion

Quality Preservation

Cross-Platform

Free & Unlimited

Powerful Features

MP4 Input Support

AVI Output

Client-Side Processing

Batch Conversion

No Installation

Real-Time Progress

Frequently Asked Questions

How do I convert MP4 to AVI?

Why convert MP4 to AVI?

Is the conversion secure?

What is the maximum file size?

Does conversion affect quality?

Technical Specifications

Input Format

Output Format

Processing

Browser Support

Additional Resources

Related Tools

External Resources

Ready to Convert MP4 to AVI?