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How to Convert AVI to MP4 in Windows/Mac Effortlessly

AVI files are usually quite large due to its poor compression. Sometimes you may need to convert AVI to MP4 so as to get a balance between the video quality and size. Or play the video files on MP4 players like iPhone, iPad, iPod, etc.

Now, what you need is an ideal video converter to help you convert AVI video to MP4 format. Aimersoft Video Converter Ultimate is such a powerful video converter. This software is compatible with Windows system, including the newly released Windows 8. With it, you can easily and quickly transform the videos from AVI format to MP4 without compressing any quality of the original video. Furthermore, this video converter allows you to develop the imagination on video editing. For it employs a built-in editor, you can change the visual effects of the video by trimming the play time, cropping the frame size, adding watermark and subtitle, etc. Mac (Mountain Lion) users who want to convert AVI to MP4 can use the equivalent Aimersoft Video Converter Ultimate for Mac.

Download AVI to MP4 Converter:

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How to convert AVI video to MP4 step by step

The procedures on how to convert AVI format to MP4 here is taking Aimersoft Video Converter Ultimate as an example. Make sure you have downloaded the suitable version.

1 Import AVI files

Click Add Files button to upload AVI files from your computer or portable devices. You can also directly drag the video files into the program directly.

avi to mp4

2 Edit Video (Optional)

Click "Edit" on the main interface, you can then customize AVI videos. You can trim the video play time, crop frame size, add watermark and subtitle, etc.

convert avi to mp4

3 Set MP4 as the output format

Select the proper output destination folder and your desired output format. If you want to convert AVI files for portable device, but you don't know which formats your device supports, you can simply select any format in the category of your device.

avi to mp4 converter

4 Start to convert AVI video to MP4

After all necessary setting, the last thing is to click the "Convert" button to start converting AVI to MP4. After the conversion, click Open Folder to get the MP4 videos and then you can enjoy them on your MP4 player.

What Aimersoft Video Converter Ultimate can do for you is not only limited to the AVI to MP4 conversion. It also contains the following function: rip DVD, burn video to DVD, make photo slideshow, remove DRM protection, and download on-line video, etc. Once you have tried it, you will fall in love with the thrill of video conversion.

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What Is AVI?

AVI stands for Audio Video Interleave. This format was created, designed, and released by Microsoft in 1992. AVI allows for the synchronized playback of video and audio and works very similarly to the video format used for DVD's. AVI files can come quite huge mainly because it can be used with certain codecs such as DivX and Xvid. However, it can't support B-Frames like MPEG-4.

What is MP4?

MP4 is also known as MPEG-4. If software giant Microsoft created AVI, this particular video format is created by Motion Pictures Expert Group, the same group that sets the standards in the digital audio and video industry. MPEG is a highly compressed video file. It is a video format that is composed of different layers wherein video, still images, audio, and even subtitles can be stored. It can also contain advanced content such as menus, 3D graphics, and user interaction features.

AVI vs MP4

When comparing video formats together, it's important to know which type offers the best quality with the least possible space required. Given the fact that an MP4 file is better compressed, it is definitely more portable than AVI. That is the reason why MP4 is the most popular video format at the download zones today. MP4 can also be played by almost all media players and devices. AVI, on the other hand, has limited applications. Mostly, it can be accessed only by Windows-based programs such as the Windows Media player.

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Aimersoft Video Converter Ultimate supports lossless conversion. You can test it with the trial version.
Hi, I've tried a couple of trial applications to convert AVI and WAV files to MP4, but the resultant quality (both audio and graphics) is terrible. When I use your software, will I lose any sound/visual quality, or will the output be of the same quality as the original file?
Aimersoft Employee
Hi, Ben. Thanks for your interest in our product and we are sorry to make any inconvenience. In your case, you can uninstall the program and try to install it again. If it still doesn't work, please feel free to contact our support team: http://support.aimersoft.com/
Hi, I have a problem, when the application opens i have to send you a bug report with 2 files... So i can't use it. Why???
Aimersoft Employee
Hi. Aimersoft Video Converter Ultimate can perfectly fulfill all your needs. You can download to have a try now! ^_^
I have a knack for dumb questions, so here we go: I have old home movies on Hi8 video tape from a 2001 Sony Handycam. If I buy a cable to connect the AV output from the Handycam to a USB input, can I then use this software to locate and convert the analog feed to a digital format, and thereafter use the conversion, editing and burning tools? The cable sellers seem to think that I have no choice but to send the video tapes to a third party to perform the conversion to digital at their ridiculously high prices. Thank you.
Thanks for the instructions on converting AVI to MP4. 
Of course it's compatible with Mountain Lion.
Hi, does the Mac version works with Mountain Lion? I want to convert my AVI videos to MP4 in Mountain Lion.
this is the best avi converter i have seen, which this i have converted my video files to .mp4 format and now i can watch them on my mobile phone and it saves so much space, so thanks to this converter as i can watch videos while traveling
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