How to Convert AVI Videos to MP4 Format on Windows and Mac

Lisa Ou

Dec 30, 2019 17:00 / Posted by Lisa Ou

If you are looking for the easiest way to convert AVI to MP4, you are right here. This article will recommend you 3 practical AVI to MP4 video converter programs for Windows and Mac OS X. All of them are simple and easy to use. Plus, you can learn more knowledge related to the two mainstream video formats. Just read below to get the easiest AVI to MP4 converters and the step-by-step guide.

How to Convert AVI Videos to MP4 Format on Windows and Mac

1. How to convert AVI to MP4

Method 1: Easiest Way to Convert AVI to MP4

FoneLab Video Converter Ultimate is one of the easiest video converter software on market. It can meet all your needs involved with AVI to MP4 conversion.

  1. Convert AVI to MP4 or vice versa in a few minutes.
  2. Support all video and audio formats.
  3. Transcode AVI for playback on iPhone or Android.
  4. Protect video quality while converting.
  5. Provide extensive bonus tools and custom options for advanced users.

How to Convert AVI to MP4 Simply

Install the easiest AVI to MP4 converter

When you have several AVI movies and want to convert them to MP4, download Video Converter Ultimate and install it on your computer. Then launch it to enter the main interface.

video converter ultimate main interface

Import AVI videos

Click the Add File menu on the top of the interface to get the open-file dialog. Find the AVI files and open them into the converter. The media player on the right side allows you to preview the video files. Plus, you can find the advanced tools on the top ribbon, such as Trim, Edit and more.

video converter ultimate media library

Convert AVI to MP4

Expand the Profile drop-down list at the bottom and select MP4 from the General Video folder. Click the Browse button to set a specific folder to store the result. Finally, hit the Convert button to start the process.

output format

Method 2: Convert AVI to MP4 with HandBrake

HandBrake is an open-source video converter. So, everyone can use it to convert AVI to MP4 for free. It has a lot of custom options. Fortunately, beginners can use the presets to simplify the procedure.

Open your AVI to MP4 converter, click Source and Open File to open the AVI file you want to convert.

handbrake select source file

Set the Destination folder by hitting the Browse button, and make sure to choose MP4 from the Container drop-down.

handbrake mp4

Locate the Presets panel on the right side and select the preset based on your need or target device.

Finally, click the Start button on the top menu bar to start converting AVI to MP4 immediately.

handbrake start converting to mp4

Note: For advanced users, you can customize the options related to video, audio, subtitle and more at the bottom.

Method 3: Convert AVI to MP4 Using VLC

VLC is another open-source project. As a media player, it can decode almost all video files. Furthermore, it has the capacity to convert AVI to MP4 on Windows and Mac OS X.

Run your VLC media player and select Convert/Save from the Media menu on the top of the window.

use convert with vlc

On the Open Media dialog, click the Add button to import the AVI files that you wish to convert to MP4 from your hard drive. Hit the Convert/Save button to open the next dialog.

Select MP4 from the drop-down list of Profile and select a specific folder to save result by hitting the Browse button.

convert with vlc

Once click the Start button, the AVI videos will be converted to MP4 files.

2. What Are the Differences between AVI and MP4

AVI is a multimedia container format released by Microsoft in 1992. It can store both video and audio content. The biggest advantage of AVI is the video quality partly because it is a lossless video format. However, AVI video files are very large and not friendly on mobile devices or the internet.

MP4, one the other hand, is a lossy video format compressed by MPEG-4 Part 14. Compared to AVI, MP4 can produce smaller file size but not damage the quality very much. Plus, MP4 is the most commonly used video format, so it works fine on all digital devices. That may be why you want to convert AVI to MP4.


This guide showed you how to convert AVI to MP4 without damaging the video quality. Firstly, HandBrake and VLC Media Play are able to transform your video files from AVI to MP4 format for free. However, they have unavoidable downsides, such as unintuitive workflow or messy interface. Therefore, we recommended FoneLab Video Converter Ultimate, a more flexible AVI to MP4 converter. It is not only easy to use, but also able to produce the best output quality.

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