Convert AVI to MP4 Online

Modernize your old AVI video files by converting them to the highly efficient MP4 format for modern playback.

Drag & drop file or Browse Files

Target Format

Select the format you want to convert this video into.

Universal Format to Anything

Convert AVI to MP4 Online

Modernize your old AVI video files by converting them to the highly efficient MP4 format for modern playback.

ffmpeg_worker.log
[INFO] Starting video remuxing...
[DATA] Found H.264 stream...
[WARN] Transcoding to WebM VP9
_

Container Output

WebCodecs GPU

Modernize Legacy Media

Bring your older digital camera or camcorder AVI files into the modern H.264 era.

No FFmpeg installation
Preserves original quality
Supports 4K and 60FPS

Play Anywhere, On Any Device

By converting your videos to MP4 (H.264/AAC), you ensure they will play flawlessly on iPhones, Androids, Smart TVs, and social media platforms.

How to Convert Videos Offline

Drop your Video

Select any obscure video format from your local drive.

Choose Target

Select MP4 for universal playback or WebM for web optimization.

Save File

The conversion happens locally. Click download when done.

100% Local Execution

No accounts, no software installation, and no upload limits. Just drag, drop, and convert.

Offline Security

  • Prevent video leaks
  • Safe for private media
  • Absolute privacy

Frequently Asked Questions

Q: Will this reduce my file size?

A: Yes! AVI is an older, less efficient container. Converting to MP4 with H.264 encoding will significantly reduce file size while maintaining visual quality.

Q: Can I play MP4 files on my smartphone?

A: Yes, MP4 is natively supported on 100% of modern iOS and Android smartphones.

Q: Do you upload my AVI files?

A: Never. The conversion happens strictly in your browser using local WebAssembly technology.