Convert AVI to MP4
AVI to MP4 converter that runs entirely in your browser. 100% free, no signup, no upload — your files never leave your device. One-click batch conversion.
AVI dates from 1992 and wastes space on legacy codecs; MP4 with H.264 typically cuts the file in half while playing on every modern device. Converting AVI to MP4 modernizes old camera footage and downloaded clips — expect a real re-encode, since AVI-era codecs like DivX and Xvid don't fit in MP4 players.
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About formats
AVI
AVI (Audio Video Interleave) is one of the oldest and most recognized multimedia container formats, introduced by Microsoft in November 1992 as part of its Video for Windows technology. Built on the Resource Interchange File Format (RIFF) structure, AVI interleaves audio and video data in alternating chunks, allowing synchronized playback without requiring sophisticated stream management. The format is codec-agnostic, meaning it can hold video compressed with virtually any codec, from early Cinepak and Indeo to modern DivX, Xvid, and H.264 streams. This flexibility contributed to widespread adoption across personal computers throughout the 1990s and 2000s. AVI supports multiple audio streams, enabling multilingual content within a single file. Despite being decades old, AVI remains one of the most universally recognized multimedia formats and is still widely supported by media players and editing tools across all major operating systems.
- Developer
- Microsoft
- Initial release
- November 10, 1992
- Compression
- Lossy
- Color depth
- up to 10-bit
- Transparency
- No
- Animation
- Yes
Best for
- Archiving legacy video footage
- Editing in older video software
- Storing multiple audio tracks
- Playback on classic media players
- Cross-codec video container use
Pros
- +Codec-agnostic — accepts nearly any video codec
- +Supports multiple audio streams for multilingual content
- +Universally recognized by media players and editors
- +Simple RIFF chunk structure easy to parse
Cons
- −No modern streaming or chapter metadata support
- −Files tend to be large with inefficient codecs
- −No built-in subtitle standard
- −Lacks DRM and modern container features
MP4
MP4 (MPEG-4 Part 14) is a digital multimedia container format standardized by the Moving Picture Experts Group (MPEG). It stores video, audio, subtitles, and still images in a single file and is the most widely used format for streaming and sharing video across the web, mobile devices, and living-room hardware. MP4 offers an excellent balance between compression efficiency and quality, typically using the H.264 or H.265 (HEVC) video codec together with AAC audio. Its near-universal support makes it the default choice for social media platforms, browsers, phones, and modern TVs.
- Developer
- ISO/IEC (MPEG)
- Initial release
- 2001
- Compression
- Lossy
- Color depth
- up to 12-bit HDR
- Transparency
- No
- Animation
- Yes
Best for
- Sharing videos on social media
- Streaming video over the web
- Playback on phones and tablets
- Storing H.264 or HEVC video
- Distributing downloadable video clips
Pros
- +Near-universal support across devices and browsers
- +Excellent compression-to-quality ratio
- +Supports subtitles, chapters, and metadata
- +Hardware-accelerated decoding on most devices
Cons
- −Patent-encumbered H.264/HEVC codecs
- −Not ideal for lossless archival
- −Editing streams can require re-muxing
How to convert AVI to MP4
- 1
Select AVI files from your computer, Google Drive, Dropbox, a URL, or by dragging them onto the page.
- 2
Choose mp4 — or any other format you need as a result (more than 200 formats supported).
- 3
Let the file convert, then download your mp4 file right away.
AVI vs MP4
| Property | AVI | MP4 |
|---|---|---|
| Compression | Lossy | Lossy |
| Color depth | up to 10-bit | up to 12-bit HDR |
| Multi-track | Yes | Yes |
| DRM support | No | Yes |
| Open format | No | No |
When to use AVI vs MP4
AVI
- Archiving legacy video footage
- Editing in older video software
- Storing multiple audio tracks
- Playback on classic media players
- Cross-codec video container use
MP4
- Sharing videos on social media
- Streaming video over the web
- Playback on phones and tablets
- Storing H.264 or HEVC video
- Distributing downloadable video clips
Use cases for AVI → MP4
- Archiving legacy video footage
- Editing in older video software
- Storing multiple audio tracks
- Playback on classic media players
- Cross-codec video container use
- Sharing videos on social media
- Streaming video over the web
- Playback on phones and tablets
- Storing H.264 or HEVC video
- Distributing downloadable video clips
Frequently Asked Questions
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Will converting AVI to MP4 reduce the quality?
Does MP4 support transparency?
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200+ Formats
Supports a wide variety of formats including images, documents, audio, video, and more.
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