🔒 Files never leave your device
MP4 to AVI
Convert MP4 to AVI right in your browser. Without server upload.
Drop MP4 file here
Supported: .mp4, .m4v, .mov
Converting...
0%
Done! Your AVI:
Limits:
- One file at a time
- Size — up to 30 MB
- Duration — up to 30 seconds
- ⚠️ AVI is a heavy format. The output file can be very large.
About MP4 to AVI converter
AVI is a classic video format supported by most old players and devices. However, it uses weak compression, so files turn out large.
Our converter works directly in the browser via ffmpeg.wasm. Files are not uploaded to the server.
Why use this converter
- Privacy: files are not uploaded to the server.
- Free: no registration or limits.
- Compatibility: AVI opens on most older devices.
- Simplicity: no need to install programs.
How to use
- Drop the MP4 file into the upload area.
- Specify the start time and duration (up to 30 seconds).
- Click "Convert to AVI".
- Download the ready file.
Frequently asked questions
Where do my files go? Nowhere. The video is processed in the browser's memory and disappears when you close the page.
Why is the AVI file so large? AVI uses weak compression compared to MP4. The resulting file can be 5–10 times larger than the original.
What codec is used? MPEG-4 Part 2 is used for video and MP3 for audio. This is the standard combination for AVI.