1. Add your AVI files to the conversion queue. Go to the File menu and click Convert / Stream, which will load the window with a Drop media here section on top. You can then either click Open media to select AVI files from your computer, or drag and drop media from the Mac Finder into the program.
2. Open the drop-down menu of the Output Format in the bottom left corner. From the Video tab, select MP4 as output format and choose your desired resolution on the right. Step 3 Convert AVI Files to MP4 on Mac. At the bottom of File Location, select the location on Mac where you want to save the converted file.
3. Apple apps such as QuickTime Player, Photos, and Keynote work with many kinds of audio and video formats. Some apps prefer specific formats, but QuickTime movie files (.mov), most MPEG files (.mp4,.m4v,.m4a,.mp3,.mpg), some AVI and WAV files, and many other formats usually work in most apps without additional software.
4. Part 4: Best Way to Convert Apple QuickTime MOV to MP4 on Windows and Mac PC. To Batch convert QuickTime movies to MP4 files in high quality, you can turn to Aiseesoft Video Converter Ultimate for help. There is no maximum file size limitation, and you can get powerful video-editing features from this all-in-one QuickTime MOV to MP4 video.

Summary: this post is about how to decode and re-encode QuickTime mov to MP4 on macOS and Windows.

To play AVI in QuickTime without hassle, you can convert AVI to MOV, MP4, or other QuickTime supported formats. Then select it from the ' Video ' tab in the format tray to set it as target output, where you could also set encode settings like bitrate, frame rate, resolution, encoder, etc.

'I have to remove QuickTime media player from my Windows PC due to the reported security issues, now I need to convert QuickTime to MP4 as my Windows Media Player won't play QuickTime movies but it will play mp4.'

PC users can't play QuickTime movies on Windows for that Windows Media Player, or Blu ray player and many others don't support QuickTime MOV M4V files. Given this, we share ways on how to decode QuickTime movie to MP4 on Windows (10/8/7/Vista) and on macOS (Big Sur) in world's fastest speed without virtual quality loss.

Table of Contents

Part 1: Fastest QuickTime to MP4 Converter for Windows & Mac

No.1 fast video converter is recommended - MacX Video Converter Pro. It works seamlessly on Windows (10/8/7/Vista) and macOS (Big Sur) to convert QuickTime to MP4, AVI, WMV, MP3, MPEG etc, or decode MP4 to QuickTime MOV with fastest speed and no quality loss.

• Easily convert QuickTime HD videos, movies, M4V, MOV files to mp4, avi etc for Windows Media Player, Blu ray player, VLC etc, as well as decode MKV, AVI, WMV, MP4 to QuickTime, iMovie, iTunes, or iPhone 12/Pro, Android Samsung Galaxy S10/Note 9 and more.
• Transcode QT to MP4 in proper bitrates, proper settings, reduce output MP4 file size without losing quality etc.
• The support Intel QSV hardware acceleration and HT tech makes the Quicktime video converter deliver the fastest QuickTime MOV, M4V, AVI to MP4 conversion speed, 5X faster than other QuickTime movie to MP4 converters and the High Quality Engine guarantees nearly no quality loss.
• The whole QT to MP4 conversion will be safe and stable, with no ads, virus or malware.

Pros

• Stable, reliable and ads-free.
• Various video setting options for QuickTime to MP4 conversion.
• Fast speed and high quality guaranteed.
• Wide-range of supported and output video formats, devices and players.
• A slew of other powerful functions like download online videos, edit video clips etc.

Cons

• It is required to download and install it on Windows/Mac.
• It's not free.

Tutorial: How to Convert QuickTime MOV to MP4 with High Quality and Fastest Speed

Step 1: Free download this fastest QuickTime to mp4 converter for Windows (10/8/7/Vista) on PC or the macOS version. Run it and click 'Add File' to load the QT video files you want to convert.

Step 2: To convert QuickTime file to mp4 format, choose MP4 from the popping-up windows as the output format. For the output QuickTime HD MP4 videos, you can also reduce the file size, customize the video settings etc.

Step 3: Click the 'Browse' button to choose the destination folder where you want to save the output MP4 files converted from QuickTime MOV videos.

Step 4: Click the 'RUN' button to start to convert QuickTime to MP4 on Windows/Mac now using the best video converter for Mac. You can play the QT videos on Windows Media Player, or mobile devices in minutes.

Part 2: Transcode QuickTime Video Movie to MP4 Free Online

There are various online, free QT mov to mp4 converters providing option to free convert QuickTime mov m4v to mp4, wmv, mp3, avi etc. files-conversion.com, zamzar, convertio.co are all among the best free QT to mp4 video converters online, but considering the diverse features, we recommend online-convert.com.

This free online QuickTime MP4 video converter allows PC/Mac users to convert from 50 source formats, including QuickTime MOV M4V etc. to mp4, avi, wmv, or convert MP4 to QuickTime and about 30 other popular formats. It excels many other free QuickTime video to mp4 converters online is that it has options like bitrate, file size, frame rate etc for users to customize the output mp4 files. You can just upload the QuickTime movie you want to convert to mp4, and follow the simple steps to start the conversion.

Pros

• Cross platform - online QT to mp4 converters will run on Windows (10/8/7)/Mac/Linux.
• No installation required.
• Accessible anywhere

Cons

• Simple and single feature.
• Easily get stuck in QuickTime to MP4 conversion progress, especially for QuickTime HD movies, if the internet is not strong enough.
• Output quality may vary. And it always delay in QuickTime to MP4 conversion.
• Less control over the QT mov files, users don't know where and what's done with it as they are kept in the web servers. Many are ad-supported or even brimming with plugins, adware.

Part 3: Decode & Re-encode QT to MP4 Free with QuickTime Pro/iTunes

The last method to convert QuickTime mov to mp4 on Windows/Mac is even more easier. In addition to desktop/online QuickTime to MP4 converters, if your Windows/Mac has installed QuickTime Pro or iTunes, they have ready-made solutions to free convert QuickTime movie to mp4 format.

With QuickTime Pro: Make sure it's QuickTime® 7 Pro or later. Open QuickTime Pro > click Open File to open the Quicktime files > click Export > A dialog called 'Save exported file as…' will open > select 'Movie to MPEG-4' and it will ready to convert QT to mp4 > Click 'Save' to set an output destination and then it will start the conversion.

With iTunes: Make sure it's version 6.0.7 or later. Open iTunes > Choose 'Movies' in 'Library' and select the Quicktime MOV file to be converted to MP4 > select mpeg-4 in 'Convert Selection for iPod' from the advanced menu and it will start to convert QuickTime files to mp4 files free on PC/Mac.

Pros

Convert Avi To Mp4 Mac Quicktime Online

• Extremely easy to convert mov QT videos for Windows Media Player etc.
• Good output MP4 quality reserved.

Cons

• Work for very limited formats (5 output options in QuickTime Pro: 'None', 'MPEG-4 Basic', 'MPEG-4 Improved', 'H.264' and 'Pass Through')
• Limited editing features or MOV file size compression etc.
• No other functions available.

MP4 advantages over QuickTime MOV - Why Convert QuickTime MOV to MP4

• MP4 vs MOV in compatibility, MP4 is a universal container format accepted by media players like Windows Media Player, VLC, KMplayer, mobile devices, NAS drive, Cloud services etc. while MOV is friendly with Apple devices and software.
• By converting QuickTime to MOV, you get smaller file size with the same quality.
• MP4 video is suitable for fast streaming on the internet.

You can convert AVI to MP4 on Mac for free with a desktop application or an online converter. The best choices are provided below.

I have some movies that are AVI files that I would like to put onto my iPod. How do you convert avi files to mp4? - Yahoo Answers

Basically I have quicktime pro, but I was trying to play AVI with H.264 codec but I can't seem to get it to play. It works fine on VLC but I need to play it on Quicktime so I can encode the file to another format. - MacRumors

Maybe you've got some torrent movies or video clips in AVI format, or some family AVI footages from your digital camcorders saved on your Mac's hard drive. But you soon realized that they're unplayable since the Mac built-in player - QuickTime cannot recognize the AVI format at all! So you might have come up against a brick wall trying to discover if it is possible to play .avi format films on Mac computer, or iPhone iPad. Some web sources say it can't been done; while others reckon it's possible only if converting AVI to MP4 with a superb free Mac video converting software.

100% Free to Convert AVI to MP4 on Mac

5-Star Solution: macXvideo
Convert 1080p/720p HD, or SD AVI videos to MP4 format on Macbook Pro/Air, iMac etc. within 3 steps. 100% Free; No Adware; No Malware!

Table of Contents

Why Do You Convert AVI to MP4 on Mac?

Yes, there are various reasons that users convert AVI to MP4 on Mac computer, instead of MKV, FLV, MOV etc. But in a nutshell, it can be concluded into Mac video playback, uploading, storage, formats compatibilty issues. Let's go in details.

AVI Playback on Mac (QuickTime)
To play AVI on Mac directly on Quicktime player is always a hot topic. Since Quicktime have no access for AVI videos, only you convert AVI to MP4, can you play it on Mac without any hassle.

AVI Video Uploading on Mac
Throughout YouTube, FB, Dailymotion etc., which allows you to upload AVI videos directly? None. Converting AVI to MP4, or or other YouTube video format is always the initial step for uploading.

Smaller Size for Mac Storage
Compared with AVI, MP4 is much samller at the same qulity, taking up less storage space on Mac. If you're precisely obsessed with this, why not compress large-size video avi to smaller MP4?

Compatible to Apple Products
Owing to MP4's wide compatibilty, Mac users prefer to convert AVI to MP4 and add them to iTunes/iCloud, so that they can directly watch on Macbook, iMac, iPhone iPad iPod etc.

Of course, the reasons are not confined to these above. In terms of format itself, MP4 is superior in many aspects somehow. Let's check the general comparsion between MP4 and AVI:

AVI developed by Microsoft, in DivX, Xvid, Cinepak, Indeo, DV or Motion JPEG codec.

• Pros: Compatible with Microsoft devices, game console including Xbox, PS3, PSP.
• Cons: Large file size; Rejected by Mac & iOS-based apps and devices; Lossy compression sacrifices quality for file size

MP4 developed by MPEG, in AVC MPEG-4 and H.264 video codecs.

• Pros:Great compatibility with devices; Sharing on the web and streaming over internet;Better compression ratio with smaller size and good quality.
• Cons: MP4 with H.264 codec poses problems with editing as it contains more B/P frames.

Best Free Solution to Convert AVI to MP4 Mac

Operating System: Mac OS X 10.5 - Big Sur

Faced on the issue that iPhone iPad and Quicktime won't play AVI files, you're suggested to convert AVI to MP4 on Mac since the MP4 format is identified as one of the default formats by Apple's gadgets and other devices as well. And as you cruise related forums, you may notice that a wholesome of users demand of freeware to get AVI to MP4 conversion done on macOS. But the only real problem is that some hum and haw halfway or disappoint you when it comes to speed and conversion quality in the tests of converting AVI to MP4 format on Mac.

Fortunately, we picked up a totally free AVI to MP4 video converter - macXvideo that works for AVI to MP4 conversion on Mac (including the latest macOS Big Sur). It paves the way with intuitive features that go well beyond other competitors in any mainstream yet free video conversion with no ads, spyware, watermark, etc. It supports any video format like AVI, FLV, WMV, MKV, MTS, etc as input and is in favor of freely converting any video to MP4, MOV, WMV, etc on Mac in a fraction of seconds.

Convert Avi To Mp4 Mac Quicktime Free

Meet Bonus Features of macXvideo

• Convert all standard video formats including AVI, MPEG, MP4, MOV, FLV etc.
• Free convert HD, even 4K UHD video, MKV, AVCHD, H.264/AVC, H.265 etc.
• Play HD and SD Videos on iPhone iPad iPod and Android devices.
• Excellent editing features like trim/crop video, add effect & subtitle to video.
• Accelerate the video conversion to 5 times faster than any other rivals
• Simple and easy-to-use interface with flexible parameter setting

How to Freely Convert Video from AVI to MP4 Format on Mac OS X

Step 1:Free download this AVI to MP4 converter freeware on Mac, run it and click 'Add File' button to load your AVI file you desire to convert.

Step 2: To convert AVI video to MP4 format on Mac, simply select the target MP4 Video format at the bootom of the window. The optimized default settings ensure the best output quality.

Step 3: Specify an output folder on your computer to save the output files. Click the 'Folder' button to choose the path where you want to save the output files in.

Step 4: Click the 'RUN' button at the lower right corner of the interface to begin to convert AVI to MP4 on Mac OS X.

Advanced Solution to Convert AVI File to MP4 format on Mac OS

Despite the freeware provides a fabulous yet free AVI to MP4 converting solution for Mac, some bonus extras you'd like to have shall not be missed out. And the paid program called MacX Video Converter Pro will be definitely worthy of your trying and is the best around for sure.

• Convert AVI and any other video to iPhone, iPad, Samsung Galaxy, Sony Xperia, and other 350+ devices
• Convert HD videos to a wide range of formats, such as MKV to MP4, WMV to MOV, H.265 to H.264, MTS to MP4, FLV to AVI, AVI to DVD, MP4 to MP3, etc.
• Convert AVI to MP4 on Mac at blazing fast speed with excellent quality. Only 23 seconds for a 5 min HD AVI video converting to MP4.
• Compatible with the latest macOS Big Sur.

Another Free AVI to MP4 Solution: Online Video Converter

At the mention of converting videos for free, online AVI to MP4 converter is absolutely another wide choice. There is no limit on platforms, both Mac and Windows users can enjoy a smooth AVI to MP4 conversion with fast speed and not bad quality. But online AVI files converter for Mac is also criticized to be not stable and safe enough. There is a big possibility that your AVI to MP4 conversion crashes midway or your computer gets infected with virus, adware or malware. Anyway, all these happens on condition that you pick up a weaker online tool. You're free from all these problems if you rely on a reliable online AVI to MP4 converter, such as Zamzar, Free Online Video Converter, Convertio etc.

Take Convertio as an example, it owns a clean interface and allows you to convert AVI to MP4 video online within 3 steps. And now go to the website Convertio first then here we go to convert AVI to MP4 on Mac:

Convert Avi To Mp4 Mac Quicktime Converter

Step 1: Load AVI files. Select files from Computer, Google Drive, Dropbox, URL or by dragging it on the page.

Step 2: Choose 'to MP4'. Choose MP4 or any other format you need as a result (more than 200 formats supported)

Step 3: Download your MP4. Let the file convert and you can download your MP4 file right afterwards

Side-by-side Comparison of Free AVI to MP4 Converter

Convert Mp4 To Avi Mac Quicktime