What is AVI used for?

AVI is commonly used for: legacy source videos.

How do I optimize AVI files?

Run "npx optimo video.avi" in your terminal. Optimo applies format-specific compression to reduce AVI file size while preserving quality.

What is AVI?

Audio Video Interleave (container) (.avi). Legacy container format; usually worth converting to MP4/WebM.

Last updated: 2026-03-18

AVI (Audio Video Interleave (container), .avi) is a video container format that uses container compression. Legacy container format; usually worth converting to MP4/WebM. It supports animation. Common uses include legacy source videos.

Quick facts

Extension

.avi

Type

Video container

Compression

container

Transparency

Animation

Yes

MIME type

video/x-msvideo

Common uses

legacy source videos

Delivery notes

Convert to MP4/WebM for smaller files and better compatibility.
Use AVI only when a legacy system requires it.

What to do with optimo

Optimize AVI Compress AVI Resize AVI Convert between formats

npx optimo video.avi

Related conversions

Convert AVI to MP4 Convert AVI to WebM Convert MP4 to AVI Convert MOV to AVI Convert MKV to AVI Convert AVI to MOV Convert AVI to MKV

Frequently asked questions

What is AVI?: Audio Video Interleave (container) (.avi) is a video format. Legacy container format; usually worth converting to MP4/WebM. It uses container compression and animation.
What is AVI used for?: AVI is commonly used for: legacy source videos.
How do I optimize AVI files?: Run "npx optimo video.avi" in your terminal. Optimo applies format-specific compression to reduce AVI file size while preserving quality.