AVI to MP4 Converter
Convert AVI videos to MP4 format in your browser. Free, private, no upload required.
Drop a video file here or click to browse
Accepts: video/x-msvideo
How to use AVI to MP4
- 1
Upload your AVI video file.
- 2
The tool re-encodes it as MP4 with H.264 video and AAC audio.
- 3
Download the modern, compressed MP4 file.
Why use this tool?
- AVI files are often very large. MP4 provides much better compression.
- Modernize legacy AVI files for web sharing and streaming.
- Works with most AVI codecs.
Frequently Asked Questions
Why are AVI files so large?
AVI is an older format that often uses less efficient codecs. Converting to MP4 (H.264) can reduce file size by 50-80% with similar quality.
Will old AVI files work?
Most AVI files are supported. Some very old or unusual codecs may not be compatible with the browser-based converter.
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