AVI to MP4
Convert AVI to modern MP4 format.
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Auto-deleted after 2 hours
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Most files in under 30 seconds
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How to Convert AVI to MP4
Follow these simple steps to convert files quickly and safely.
Sign in & upload
Log in, then drag and drop your AVI file or browse from your device.
Start conversion
Review file details and click Convert Now. We process your file automatically.
Download result
Get your converted MP4 file instantly once processing completes.
Frequently Asked Questions
Everything you need to know before converting.
Is AVI to MP4 free to use?+
Yes. AVI to MP4 is free for files up to 100MB. Premium supports files up to 2GB and faster processing.
Are my files secure and private?+
Files are encrypted in transit, scanned for safety, and automatically deleted after 2 hours. We do not access your file content.
Will file quality be preserved after converting to MP4?+
Our converter is optimized for high-quality output. Actual quality can vary based on the original file and chosen format limitations.
Understanding AVI to MP4 Conversion
AVI is a legacy video format that stores video and audio in a simple interleaved structure. While reliable, AVI files tend to be very large and lack modern features like streaming support, advanced subtitles, and efficient compression. MP4 is the modern standard — it supports H.264/H.265 codecs, streaming, chapters, metadata, and subtitles in a compact package. Our converter re-encodes AVI video using modern H.264 compression, dramatically reducing file size while maintaining or even improving visual quality.
When to Convert AVI to MP4
Here are common scenarios where AVI to MP4 is the right choice.
Modernising an old video library
If you have a collection of AVI files from older cameras, converting them to MP4 reduces storage needs by 60-80% while making them playable on any modern device.
Uploading older videos to the web
YouTube, Vimeo, and social media platforms process MP4 much faster than AVI. Converting before uploading speeds up processing and ensures better quality.
Playing on smartphones and tablets
Most mobile devices don't play AVI natively. Converting to MP4 makes your videos playable in the default video player on any phone or tablet.
AVI to MP4 — Frequently Asked Questions
Detailed answers to the most common questions about this conversion.
AVI to MP4 conversion with H.264 encoding typically reduces file size by 60-80% with no perceptible quality loss, thanks to modern compression algorithms.
Processing time depends on file size and resolution. A 1 GB AVI file typically converts in 1-3 minutes. Premium users get priority processing for faster results.
Yes. Our converter handles AVI files encoded with DivX, Xvid, MPEG-1, MPEG-2, and most other codecs commonly found in AVI containers.
Audio is re-encoded to AAC (the standard for MP4) at high quality. The difference from the original audio track is imperceptible in virtually all cases.