Convert MP4 to AVI
What is MP4?
MP4
MP4 uses MPEG-4 Part 14 container format standardized as ISO/IEC 14496-14. Stores H.264/AVC or H.265/HEVC video codecs with AAC audio compression. Supports multiple video/audio streams, subtitles (SRT, VTT), chapter markers, and metadata. Enables progressive download for streaming. Converting between video formats involves remuxing containers or re-encoding codecs while preserving temporal synchronization and aspect ratios.
- MP4 uses H.264/H.265 codec in MPEG-4 container format
- Universal browser and device support—no compatibility concerns
What is AVI?
AVI
AVI uses RIFF (Resource Interchange File Format) container introduced by Microsoft in 1992. Supports multiple video codecs (DivX, Xvid, H.264) and audio codecs (MP3, PCM, AC3) with interleaved data chunks. Original specification limited files to 2GB; OpenDML extension removes size restrictions. Converting to modern containers like MP4 often involves remuxing streams or re-encoding with more efficient codecs.
- AVI uses various codec in AVI container format
Why Convert MP4 to AVI?
✓ Legacy Software
Older video editing software and media players that don't support MP4
✓ DVD Creation
Some DVD authoring tools require AVI format
✓ Editing Compatibility
Certain video editors work better with uncompressed AVI files
How to Convert MP4 to AVI
- Click the "Start Converting Now" button above
- Upload your MP4 file (max 100MB for free users)
- Select AVI as the output format (pre-selected for you)
- Click "Convert" and wait for server processing. Download your AVI file when complete
Features
- ✓ 100% Free Conversion
- ✓ No Registration Required
- ✓ Fast Processing
- ✓ Cross-Platform Compatible
- ✓ Secure Server Processing
- ✓ Auto-Delete After 5 Minutes
- ✓ Batch Processing Available
- ✓ Mobile Friendly
Who Uses MP4 to AVI Conversion?
"I need my MP4 files in AVI format"
→ Convert instantly in your browser — no upload to servers, no software, no registration required
"My workflow requires AVI format files"
→ Free batch conversion with privacy-first processing: files stay on your device
"My assignment requires AVI format"
→ Fast, free conversion that works on Windows, Mac, and mobile — no installation needed
Frequently Asked Questions
How does bulk MP4 to AVI conversion work?
Upload multiple MP4 files at once—free accounts handle 3 files, Premium handles 20. All files convert to .avi independently, downloadable individually or as ZIP.
Where do you store my MP4 files?
We don't store MP4 files. EU servers (Austria) process AVI conversions then immediately delete data. Files exist only during conversion—5 minutes maximum, often deleted within seconds.
How large can MP4 files be for AVI conversion?
Free tier supports MP4 files up to 100MB. Premium extends to 500MB. Both tiers handle typical video content. Upgrade for professional-grade AVI conversions.
Do MP4 to AVI conversions take long?
MP4 to AVI video conversion takes longer due to frame processing. Small MP4 files (under 50MB, ~2-3 minutes) convert in 30-90 seconds. Larger videos require proportionally more time—expect 1-3 minutes for typical files.
Do I need to install any software?
No! Everything works directly in your web browser. No downloads, no installations, no plugins required. Just upload your file and convert. Works on Windows, Mac, Linux, and mobile devices.
Ready to Convert?
Start converting your MP4 files to AVI now - it's fast, free, and secure!
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