Convert MP4 files to AVI directly in your browser. This MP4 to AVI converter is optimized for legacy Windows software, older desktop editors, and workflows that still need compatibility-friendly AVI exports without uploading your files.
Drag and drop your video file here, or click to browse
Supported formats: MP4, AVI, MOV, MKV, WMV, FLV, WEBM, 3GP, M4V
Maximum file size: 500MB
Browser-based conversion with no upload required
AVI output tuned for legacy Windows compatibility
Private processing that stays on your device
Balanced default settings for reliable playback
Free export with instant download
No sign-up, installation, or watermark
Prepare videos for legacy desktop editors
Create AVI files for older Windows software
Keep a compatibility-friendly copy of MP4 footage
Share clips with systems that still prefer AVI containers
Test playback in classic media players
Convert local videos without cloud upload
AVI exports use MPEG-4 video for broader browser and desktop compatibility
The progress bar can pause briefly while the AVI container is finalized
Move the quality slider left for higher quality and larger files
Large files take longer because conversion runs on your device
Keep the tab open until the download button appears
Retain the original MP4 as your master backup
Yes. The MP4 to AVI converter is free to use and does not require registration or a subscription.
AVI is still useful for older Windows apps, legacy desktop editors, archived workflows, and media players that handle AVI more reliably than newer containers.
Conversion time depends on file size, video length, and device performance. Some files may appear to pause near the end while the AVI container is being finalized, which is normal.
Some quality loss can happen because AVI exports use browser-friendly MPEG-4 encoding. For the best visual result, keep the quality slider closer to the left side.
No. The conversion runs locally in your browser, so your MP4 files stay on your device during processing.
Not yet. The current MP4 to AVI tool supports local files only, not video links or URL-based downloads.
Please make sure you have the right to convert the video files you use. This tool is intended for lawful personal or business use with files you own or control.