Best AVI to MP4 Converter. Frankly speaking, Wondershare UniConverter (originally Wondershare. Two Ways to Convert AVI to MP4 on Windows and Mac. AVI is a highly compressed video audio format which is supported by many media players. But not all players can play AVI files. Some hot devices can't support to play AVI files, such as iPhone, iPad, iPod, PSP and many Android devices.

  1. Free Video Converter Avi To Mp4 For Mac
  2. Free Avi Converter For Mac
  3. Avi Video Converter For Mac

Part 1. Best AVI to MP4 Converter

Frankly speaking, Wondershare UniConverter (originally Wondershare Video Converter Ultimate) is the best way to convert AVI to MP4 on both Windows and Mac. The following is a detailed guide on how to convert AVI to MP4 on Mac, note that the Windows version functions almost the same.

Wondershare UniConverter

  • Convert AVI to MP4, MKV, MOV, and 1000+ formats.
  • Convert video/audio in original quality.
  • 30X faster conversion speed than any competitors.
  • Trim, edit MP4 video before MP3 extraction.
  • Versatile toolbox includes GIF maker, screen recorder, etc.
  • Supported OS: Windows 10/8/7, Mac OS 10.15, 14, 10.13, and more.

How to Convert AVI to MP4 on Mac and Windows

Import AVI video to Wondershare AVI to MP4 converter
Open Wondershare AVI to MP4 converter, click Add Files, and import the AVI video that you want to convert to MP4 format. You can also directly drag & drop them into the .avi to MP4 converter.
Convert AVI to MP4 format on Mac
Click the down arrow button beside Output Format:, then select the Video tab to choose MP4 in the left sidebar and select the video resolution from the right section.
Start AVI to MP4 Mac conversion
Click the Start All button when everything is set, and then the MP4 to AVI converter will initiate AVI to MP4 Mac conversion immediately.

Part 2. 5 Common AVI to MP4 Converters to Free Convert AVI to MP4 Online

2.1 Online UniConverter (originally

Online UniConverter (originally is a web-based service created for audio/video file conversion. It allows you to convert popular audio formats like M4A, FLAC, WAV, WMA, OGG, and AM4 to MP3; or convert MP3 to WAV, MP3 to WMA, and more on Windows or Mac without downloading software.

Step 1: Click + to add your AVI files.

Step 2: Select MP4 as the format to convert to.

Step 3: Click Convert to start converting your files.

Step 4: Download a converted MP4 file or save it to Dropbox.

2.2 Onlinevideoconverter (OVC) is a free online media conversion web application that allows you to convert any video link or file to various formats without the need to install any software on your computer.

Step 1: Choose a .avi video or any other supported media file from your device or cloud storage.

Step 2: Select .mp4 as the conversion format from the dropdown menu.

Step 3: Click the Start button to start converting your file.

Step 4: When the conversion is completed, click on the download link to get your converted MP4 file.

2.3 Online-Convert is an online converter that has all in one website. It is totally free to use for the public users, does not have a convert limitation, it allows you to add online files and can make some manual adjustment with its Settings features such as cut your video, change bitrate, frame rate, among others.

Step 1: Click on Video Converter in the main window of the online AVI to MP4 converter.

Step 2: Click on Convert to WMV from the left list and then click the Browse button to add your MOV video or add its URL file.

Step 3: Click on the Convert file button to start converting AVI to MP4 online.

2.4 FileZigZag

FileZigZag is a complete online file formats converter that supports a wide variety of different file formats, including videos, documents, images, songs. It's effective, easy to use and totally free.

Step 1: Click the Select button to upload your AVI files.

Step 2: Set MP4 as your output format from the drop-down list.

Step 3: Enter your e-mail address to receive your converted .mp4 files.

2.5 Convert.Files is an online tool for file conversion that enables you to convert your file from AVI to MP4 with the utmost convenience and ease. You have the option of sending it to your mail for downloading it immediately for use.

Step 1: Click Browse to upload the AVI file that you wish to convert.

Step 2: Click the drop-down icon beside Output format and select MP4 as the target file format.

Step 3: Click Convert and a link for downloading the converted file will appear in no time.

Part 3. 3 Common AVI to MP4 Converters to Free Convert AVI to MP4 Online

3.1 Wondershare Free Video Converter

The AVI to MP4 converter free enables you to free convert AVI to MP4 easily. It functions almost the same as the steps to convert AVI to MP4 with Wondershare UniConverter (originally Wondershare Video Converter Ultimate). The main differences lie in the conversion speed and supported formats. You can freely download the freeware via the download button below and use it anytime.

Video Converter Free

  • Free convert AVI to MP4, MOV, FLV, and 1000+ formats.
  • Trim, crop, edit AVI video before MP4 conversion.
  • 30X faster conversion speed than any competitors.
  • Supported OS: Windows 10/8/7, Mac OS X 10.14, 10.13 - 10.6.

How to Convert AVI to MP4 Free

Add AVI Video Free
Click Add Files button to import your target AVI videos to the free AVI to MP4 converter, or directly drag and drop them to the main interface.
Choose MP4 as Output Format
Hit the format icon in the upper-right corner to get the full list of output format, choose MP4 under the Video tab.
Convert AVI to MP4 Free
Click Convert All in the bottom right to free convert AVI to MP4 right away.

3.2 QuickTime

QuickTime is the built-in video player of the Mac system that multitasks and performs an array of other functions as well including video conversion. While using QuickTime there is no need of downloading any software or program as it comes bundled with the system. The process of video conversion is simple and quick using this free Mac video converter.

  • Preinstalled with Mac and thus no need for any software download
  • Simple interface with easy to use features
  • Allows choosing for different resolutions
  • No batch processing option
  • Limited codec support
  • Limited features as compared to other programs

3.3 HandBrake

Handbrake is another widely used free video converter Mac that supports an array of input formats. This cross-platform program is compatible with working with Mac, Windows, and Linux systems. Using the software you can convert your videos to MP4, M4V, MPG, MKV, and other popular formats. In addition to decent quality conversions, Handbrake also supports advanced features like adding subtitles, adding audio tracks, setting and customizing frame rate, changing video codec, adjusting chapters, and others. Presets for quick conversions are also available.

  • A wide array of format support for converting almost all types of files
  • Comes with advanced control features
  • Presets for quick conversion
  • Utilitarian design
  • Working with settings need time
  • Only the first four minutes are supported during the Live preview

Part 4. Comparison Among AVI to MP4 Converters

Best AVI to MP4 ConverterOnline AVI to MP4 ConverterFree AVI to MP4 Converrer
Convert home DVDYes, convert with watermark
Convert Video to common formatsAlmost all formats, over 1000 formatsOnly common formatsAlmost all formats, over 1000 formats
Batch conversion of video files
Maximum upload file sizeUnlimited100MBUnlimited
Video Conversion speedFastest Video Conversion in the industrySlowGood
Video conversion qualityLossless qualityGeneralGood
Convert any 2D videos to a 3D format at ultrafast speeds
Convert HD Video including 4K H.265/HEVC
Burn video or audio to DVD for personalYes, with watermark
Download YouTube Video and the videos from other 10,000 video sharing sitesOnly download video from YouTube
Record Online VideosRecord 1 minute
Editing functions: Clip, Split, Crop, Merge, Rotate and More
Special Effects for video editing
Add or Remove Text/Image Watermark
Plug-in Subtitle
Transfer videos to your Apple and Android devicesOnly 5 files
Streams your media files on a PC to a smart TV
Perfect DLNA support built-in

Part 5. Frequently Asked Questions for AVI Format

5.1 Why Does AVI Not Work on Mac

Generally, there're 2 major reasons causing AVI playback issues.

1. CODEC has not been ported to Mac OS X

AVI (Audio Video Interleave) is a media container consists of both video and audio data compressed with CODECs (Compressor-Decomoressor), which are unavailable for QuickTime in Mac OS X.

2. DivX®-encoded files carry the .avi extension

QuickTime does not include native DivX support, even though QuickTime 6 and later support the ISO Standard MPEG-4 media compression format and DivX is based on the MPEG-4 standard.

5.2 How to Solve .avi File Not Playing Error

We collect 4 effective methods that help to play AVI files in QuickTime on Mac.

1. Install Perian

Perian is an excellent, free, and open source QuickTime component.

2. Install the 3ivx® D4 CODEC

Download and install the 3ivx MPEG-4 CODEC as the installation instructions require in the associated ReadMe file. This CODEC adds support for a variety of DivX and other formats which often carry the .avi extension.

3. Use VLC Media Player

The quickest and easiest way to play AVI and DivX files on Mac OS X is to download and install the free VLC Media Player for OS X, which has a wide support VLC is also often referred to by its original name, VideoLAN Client.

4. Convert AVIs to Mac-compatible Format

To thoroughly solve AVI not playing on Mac issues, you can take advantage of Wondershare UniConverter (originally Wondershare Video Converter Ultimate) to convert AVI to MOV, M4V or any other Mac supported formats

5.3 MP4 or AVI, Which is Better

Handbrake is an open source and completely free command line tool for transcoding video files from one format to another. Although the interface looks complex, it's easy to use. Below we'll show you how to convert MP4 to MP3 with ease.

1. What is AVI

AVI files contain both audio and video data in a file container that supports synchronous audio-with-video playback. However, AVI lacks some features that newer containers like MPEG or MP4 have cuz it was developed for Windows.

2. What is MP4

MP4, specified as MPEG-4 Part 14, also has many other extensions such as .m4a and .m4p. It has good compatibility makes it playable on near all devices like iPhone iPad Android and it is highly-compressed while reserving high quality.

3. AVI vs. MP4
DeveloperMicrosoftMPEG (Motion Pictures Expert Group)
Video Formats SupportedAlmost anything through VFW (Video for Windows)MPEG-2 Part 2, MPEG-4 ASP, H.264/MPEG-4 AVC, H.263, VC-1, Dirac, others
Audio Formats SupportedAlmost anything through ACM (Audio Compression Manager)MPEG-2/4 (HE)-AAC, MPEG-1/2 Layers I, II, III (MP3), AC-3, Apple Lossless (ALAC), ALS, SLS and others
Supported CodecsOften DivX, XvidMPEG-4, H.264/AVC, H.265/HEVC, also MPEG-1, MPEG-2, WMV/VC-1, Real Video, Theora, VP8, VP9, MVC
Supported DevicesMicrosoft devices, Game consoles, but not compatible with Apple devicesPC, Mac, all kinds of mobile devices as iPhone iPad Android, etc.
Supported Media PlayersWindows Media Player or other Windows-based playersAlmost all kinds of media players

Jun 25,2019 • Filed to: Convert MP4 • Proven solutions

Are you troubled trying to convert MP4 to AVI online? Or are you uncertain about the professional and free MP4 to AVI video converter that you can rely on in video conversion? With this article, confidently cease all your worries because we have selected and sorted the best utilities you can utilize freely and effortlessly have MP4 to AVI in just a few clicks. Not only do these converters convert MP4 to AVI but also you can effectively employ to convert AVI to MP4.

In this article, you are going to learn several ways both offline and online you can use and convert MP4 to AVI with ease.

Part 1. How to Convert MP4 to AVI on Mac/Windows PC without Losing Quality

Aimersoft Video Converter Ultimate has ruled the video conversion sphere for almost the last decade. The said stature is because it’s a dependable professional suite which favors all users without keeping attention to their skills to produce commendable results. An intuitive interface is a key to fantastic results.

Moreover, vast file formats; AVI, M4V, FLV, VOB, MP4, WebM, MP3, AAC, WAV, and more are supported for import and gives you the liberty to export the file to 150+ file format. Record screen feature enables you to have an online music playlist for conversion. Furthermore, the free MP4 to AVI converter lets you feasibly extract audio from video and optimize video for your device.

Aimersoft Video Converter Ultimate

  • Converts several MP4 to AVI at a 90X faster speed and other 500+ video and audio formats more.
  • Compress large AVI videos to smaller files without noticeable quality lose.
  • Has a built-in basic video editor; trim, crop, rotate video to advanced video tools; add subtitles, watermarks, and effects which you can utilize to further curate your video.
  • Download feature lets you download videos from over 1000 online video streaming platforms.
  • Burn MP4 or AVI videos to DVD with customized templates easily.
  • Record screen, convert image, make GIF image, transfer video, etc.

Step-by-step- Guide to Convert MP4 to AVI with Aimersoft Video Convert Ultimate

01 Add MP4 files to Aimersoft MP4 to AVI converter

Download, install Aimersoft Video Converter Ultimate on your computer and then launch it. By default Convert window will open. From this window click Add Files tab to import MP4 files to be converted to AVI. Browse through the now opened File Explorer and select all videos you intend to convert. After which you click Open.

Tips: By clicking on the editing icons which appears just below the video thumbnail, you can easily crop the video, trim video, add watermarks, and apply effects, etc.

02 Select AVI as Output Format

Once all the videos are on the interface, hit Convert all files to to open a drop-down window. Click the Video tab on the new window to access the video output formats in a list. Scroll down and select AVI. Then select the resolution.

03 Initiate MP4 to AVI Conversion

Finally, choose the output folder otherwise converted video will be stored on the default folder. Convert all video at a go by clicking the Convert All button. If you intend to have, a super-fast conversion click the “Lightning-like” button before you start conversion. Conversion will be complete in just a few seconds and to find converted videos click the Converted tab.

Far from desktop MP4 to AVI video converter, there are excellent utilities you can use and quickly convert MP4 to AVI online. Online utilities are sufficiently available and have almost parallel capabilities compared to desktop ones. If you don’t have enough hardware space on your Online computer utilities are the best for you because they don’t require any kind of installation. Additionally, most of the online and free MP4 to AVI Converter has an easy manual, which is the perfect thing for novice individuals.

1. Online UniConverter


Online UniConverter was originally was designed for Video and Audio conversion. This MP4 to AVI Video Converter online supports all hot video formats such as MP4, AVI, MOV, M4V, and audio formats including MP3, M3U, WAV, AAC, M4A, and more on Windows and Mac.

How to convert MP4 to AVI with Online Uniconverter

Step 1. Press “Drag & Drop or Hit to Add File” to import MP4. Click “Convert all files to” and select AVI.

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Step 2. Click “Convert” to start to Convert MP4 to AVI online. Finally download the converted AVI file.

2. OnlineVideoConverter

This web-based free MP4 to AVI Converter online has a unique feature which lets you upload video, record video, and download MP4 from online video streaming sites and convert them to AVI. What is required from you is just the URL of the video to download the video?

How to convert MP4 to AVI with OnlineVideoConverter

Step 1. Select the appropriate tool to upload MP4. Press the drop-down menu and choose .avi.

Step 2. Initiate video conversion by clicking “START”. Click the download link to download the AVI file when the conversion is complete.

3. Online-Convert is an all in one online utility which lets you Convert MP4 to AVI online without any kind of limitation. What is what noting about this program is you can customize your video by changing the bitrate, frame rate, cut video, etc.

How to convert MP4 to AVI free online with Online-Convert

Step 1. Click “Video converter” from the left column of the screen. Select “Convert to AVI” and either click on the browse button or use URL to import MP4.

Step 2. Finally, hit “Convert file” to start MP4 to AVI conversion.

4. FileZigZag

This is one of the complete free MP4 to AVI converter supporting vast file formats including documents, videos, songs, and images.

How to convert MP4 to AVI free online with FileZigZag

Step 1. Hit the “Select” button to upload MP4. Choose AVI from the “Convert to…” drop-down list.

Step 2. Provide the email address to receive the converted AVI file.

Part 3. How to Convert MP4 to AVI using VLC

VLC is a commonly used multimedia playback for both Mac and Windows users. However, besides being an excellent video playback, VLC can effectively take up the role as MP4 to AVI video converter. This workaround is simple and easy to follow. Here is how to do so with the Windows version of VLC:

Free Video Converter Avi To Mp4 For Mac

Step 1. Press VLC icon to launch it and then click on the “Media” from the menu bar and select “Convert/Save…”

Step 2. Add MP4 file you intend to convert to AVI under the file tab.

Step 3. Select the destination folder and provide the name of the new video from “Target file box”.

Step 4. Click the drop-down icon beside “Profile” and select AVI from the displayed list.

Step 5. Once you have completed all the settings just tap “Start” to convert MP4 to AVI.

All the above methods we have discussed are legit and convert MP4 to AVI in a blink of an eye. This software’s can convert any other video format to the format you prefer. Therefore, when the need to convert video comes, just turn to this article and pick the method which suits you best.

MP4: MP4 is the file extension for the MPEG-4 multimedia container format. It can contain different kinds of content like video, audio, graphics, etc. Now it's the most used video format and is supported by many portable media players, video sharing sites, video editing programs, etc.

AVI: AVI, short for Audio Video Interleave, is a container format developed by Microsoft. An AVI file can contain both video and audio data and it's widely in Windows-based platform. To convert AVI to MP4 on Mac, please visit: Convert AVI Video to MP4 on Mac OS X.

And here is a summary of the comparison between MP4 and AVI:

1. MP4 is developed by MPEG while AVI is developed by Microsoft.

Free Avi Converter For Mac

2. MP4 files are usually compressed and have a smaller size compared with AVI files that have the same quality. That's to say, MP4 files have a better quality than AVI files at the same file size.

Avi Video Converter For Mac

3. MP4 is supported by much more portable media players like iPhone, iPad, iPod, PSP, Android, etc. while AVI prefers Windows-based apps like Windows Media Player.

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