Convert AVI to MP4
Free, fast and secure — convert AVI to MP4 right in your browser.
Convert AVI to MP4 for wider compatibility
Converting AVI to MP4 gives you a more widely supported file that opens cleanly across more devices, apps and platforms — handy when AVI will not play nicely everywhere.
How to convert AVI to MP4
- 1 Drop your AVI file into the converter above.
- 2 It is converted to MP4 automatically — no settings to fiddle with.
- 3 Download your new MP4 file instantly.
AVI vs MP4
| Feature | AVI | MP4 |
|---|---|---|
| Compression | Lossy | Lossy |
| Transparency | No | No |
| Animation | Yes | Yes |
| MIME type | video/x-msvideo | video/mp4 |
| Best for | Legacy desktop video — usually converted to MP4 for sharing and streaming. | Sharing, streaming and uploading video anywhere with maximum compatibility. |
About the formats
AVI video
AVI is a long-standing Microsoft container. It is widely readable on desktops and can store high-quality video, but its files are large and it lacks modern streaming features.
Strengths
- Broad desktop compatibility
- Simple, well-understood format
- Can hold high-quality video
Limitations
- Large file sizes
- No modern streaming features
- Weak mobile/browser support
Best for: Legacy desktop video — usually converted to MP4 for sharing and streaming.
MP4 video
MP4 (H.264) is the universal video container. It balances quality and file size beautifully and plays on virtually every device, browser and platform.
Strengths
- Plays almost everywhere
- Great quality-to-size ratio
- Ideal for streaming and social media
Limitations
- Lossy compression
- Less flexible than MKV for multiple tracks
- Older codecs can look dated
Best for: Sharing, streaming and uploading video anywhere with maximum compatibility.