AVI vs MP4
Which video format should you choose?
AVI wins on high video quality. MP4 wins on universal device and browser support. For most general use, pick whichever is more compatible with your existing tools — file size and quality differences are usually small at the same encoding settings.
When to use AVI
Choose AVI when you need windows-based playback and editing or archival of high-quality footage. Its strengths: high video quality, and wide windows compatibility.
Pros
- + High video quality
- + Wide Windows compatibility
- + Simple structure
Cons
- − Very large file sizes
- − Poor support on modern mobile devices
- − No native streaming support
When to use MP4
Choose MP4 when you need streaming to youtube, vimeo and social media or playback on smartphones and smart tvs. Its strengths: universal device and browser support, and excellent compression-to-quality ratio.
Pros
- + Universal device and browser support
- + Excellent compression-to-quality ratio
- + Small file sizes
- + Supports subtitles and metadata
Cons
- − Lossy compression by default
- − Can require licensing for some codecs
Side-by-side
| Aspect | AVI | MP4 |
|---|---|---|
| Full name | Audio Video Interleave | MPEG-4 Part 14 |
| Extension | .avi | .mp4 |
| MIME type | video/x-msvideo | video/mp4 |
| Compression | Compressed | Lossy |
| File size | Very large | Small▲ |
| Compatibility | Modern only | Universal▲ |
| Open source | Yes | No / partial |
| Best for | Windows-based playback and editing | Streaming to YouTube, Vimeo and social media |
▲ = generally favored on that aspect. Real-world results depend on encoder settings.
Convert between AVI and MP4
AVI vs MP4 — Frequently Asked Questions
Is AVI better than MP4?
Is AVI better than MP4?
Neither is universally better — they serve different needs. AVI is stronger for windows-based playback and editing, while MP4 is stronger for streaming to youtube, vimeo and social media. Pick based on what you're trying to do.
Can I convert AVI to MP4?
Can I convert AVI to MP4?
Yes — Zen Convert handles AVI to MP4 conversion for free, directly in your browser. It also handles the reverse (MP4 to AVI). No signup, no watermark.
Will I lose quality converting between AVI and MP4?
Will I lose quality converting between AVI and MP4?
Both AVI and MP4 use lossy compression. Each conversion adds a small additional loss because the codec re-encodes the audio/video. For best quality, convert once and keep the result.
Which file is bigger : AVI or MP4?
Which file is bigger : AVI or MP4?
MP4 files are usually smaller than AVI files at the same quality. The difference depends on encoder settings, but the trend is consistent across most content.
Which one is better supported on phones?
Which one is better supported on phones?
MP4 has broader mobile support. Most phones (iPhone and Android) play it natively without extra apps.