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Video conversion

Convert AVI to MP4

Convert your .avi files to .mp4 format online. No software to install.

Convert AVI to MP4 now

Pro plan required (from €4.99 / $4.99/month).

How to convert AVI to MP4

1

Upload

Drag and drop your .avi file or click to browse.

2

Choose format

Select MP4 as your output format.

3

Download

Click Convert and download your .mp4 file.

Why convert AVI to MP4?

AVI is a legacy format with limited compatibility on modern devices. Converting to MP4 ensures your video can be played on any modern device, shared on social media, and embedded in web pages without compatibility issues.

AVI vs MP4: technical comparison

AVI (Audio Video Interleave, introduced in 1992) uses proprietary compression. MP4 (MPEG-4 Part 14, introduced in 2001) uses proprietary compression. AVI browser support: None. MP4 browser support: Universal.

What happens to quality?

The quality impact depends on the specific settings used during conversion. MP4 uses compression that may affect quality depending on the chosen settings.

File size impact

Typical AVI file size: A 1-minute 1080p DivX video: ~20-40 MB; uncompressed: ~3 GB. Typical MP4 file size: A 1-minute 1080p H.264 video: ~15-30 MB; 4K: ~50-100 MB.

Common use cases

  • Converting for universal playback on phones, tablets, computers, and smart TVs
  • Preparing video for upload to YouTube, Instagram, or TikTok
  • Rescuing archived AVI videos for modern playback
Pro tip

For maximum compatibility, use H.264 Main Profile with AAC audio. For smaller files on modern devices, H.265 offers roughly 50% better compression. Use two-pass encoding for the best quality at a given file size target.

Why use SquishConvert for AVI to MP4?

Pro plan

Pro plan required (from €4.99 / $4.99/month). No watermarks.

Quick & easy

Create a free account in 10 seconds and start converting immediately. No credit card required.

Where your file goes

Your file is sent over an encrypted connection to our provider CloudConvert, which converts it and deletes it after the conversion, within 24 hours at most. Details in our Privacy Policy.

Works everywhere

Convert files from any device: desktop, tablet, or phone. No software to install, works in any modern browser.

358+ conversions

SquishConvert supports over 358 file conversion combinations across images, documents, audio, and video.

High quality output

Your converted .mp4 file maintains the best possible quality. No unnecessary compression or quality loss.

Video conversion requires a Pro account. See pricing, from €4.99 / $4.99/month

Frequently asked questions

Is it free to convert AVI to MP4?

No. Video conversions need a Pro plan (from €4.99 / $4.99/month), with 100 audio or 20 video conversions a month.

How long does it take to convert AVI to MP4?

It depends on the file size and on the queue at our provider. Small files usually take a few seconds.

Is my AVI file safe when converting?

Your file is sent over an encrypted connection to our provider CloudConvert, which converts it and deletes it after the conversion, within 24 hours at most. Details in our Privacy Policy.

What is the maximum file size for AVI to MP4?

Free users can convert files up to 10 MB. Pro users can convert files up to 500 MB.

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