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Free converter

AVI to MP4

Anyfile converts an AVI video to an MP4 video for free, right in your browser: the file is never uploaded.

Files are converted in your browser and never uploaded. By using Anyfile you agree to the Terms of Use.

What changes from AVI to MP4

PictureCopied as it is when it fits; otherwise re-encoded by your browser at the same size and frame rate
SoundThe first sound track is kept
Subtitles and chaptersNot carried over yet
File sizeUsually smaller: MP4 compresses more tightly than AVI

When to use MP4: Sharing and streaming video on phones, social media, websites and TVs.

Options

Open the file in the video editor to choose before downloading:

  • Quality: original, high, medium or small
  • Size: the original or smaller

The two formats

.avi

AVI videoAudio Video Interleave

Microsoft’s video container from 1992, part of Video for Windows. It interleaves audio and video and can use many codecs, such as DivX, Xvid or uncompressed frames.

Older downloads, digital cameras of the 2000s and legacy Windows software.

Opens in VLC, Windows Media Player, mpv, MPC-HC

About AVI files

.mp4

MP4 videoMPEG-4 Part 14

The MPEG-4 Part 14 container, based on Apple’s QuickTime file format. It commonly holds H.264 or HEVC video with AAC audio, plus subtitles and chapters.

Sharing and streaming video on phones, social media, websites and TVs.

Opens in every browser and phone, QuickTime, VLC, Windows Media Player

About MP4 files

Questions

How do I convert AVI to MP4?

Drop your AVI file on this page, or choose it. Anyfile converts it on your device in a moment and the MP4 downloads straight away. To change it first, open it in the video editor.

Is my AVI file uploaded anywhere?

No. The file is read and converted by your own browser, and nothing is sent to a server. You can check: open your browser’s developer tools, go to Network, and convert a file. No upload appears.

Will I lose quality?

MP4 is a compressed format, and Anyfile saves at high quality, so the difference is very hard to notice.

Can I convert several AVI files at once?

Yes. Drop them together and you get one ZIP with every MP4 inside.