5 Ways | How to Convert AVI to MP4 on Windows and Mac?

The AVI format was developed in the 1990s by Microsoft as part of its Video for Windows software. Although it is an older format, files saved in this format are still commonly used. AVI files can use both lossless and lossy compression methods, resulting in large file sizes, and are only accepted by certain players. To ensure smooth AVI playback on any device, consider converting AVI files to a more widely supported format such as MP4.

Here are five methods to help convert AVI files to MP4 while preserving the highest quality on different devices. Keep reading for detailed steps!

If you’re looking for the best AVI to MP4 video converter for Windows, WonderFox HD Video Converter Factory Pro is the perfect option. There is no input format limitation and you can export .avi to .mp4 or any format or hot device you need. It has a simple interface and makes the conversion process easy and quick!

Follow the steps to see how to convert AVI videos to MP4 on Windows using it:

Step 1. Download and install WonderFox HD Video Converter Factory Pro on your Windows device.

Step 2. Launch the program and select Converter from its startup interface. It supports importing your AVI files with drag-and-drop. Or, you can click on the Add Files button to load them.

Step 3. Click the right-side format image to enter the output profile library. Then head to Video > MP4.

Step 4. You can enter Parameter settings to modify the output parameters (incl. codec, resolution, frame rate, sample rate, bitrate, etc.,) if necessary.

Step 5. Click the ▼ icon to specify an output folder and then hit Run to start the conversion at once.

This open-source transcoder is a handy tool for converting video format from AVI to MP4. It also provides you with lots of adjustable options to customize your MP4 outputs. You can set the video encoder, change output resolution, add subtitles, and do more.

Here is how to convert AVI to MP4 for free using it on Mac:

Step 1. Download and install Handbrake from its official site: https://handbrake.fr/

Step 2. Locate the AVI video you want to convert and choose to Open With Handbrake.

Step 3. Then from the Format dropdown options, select MP4 as the output format. As you can see Handbrake only includes 3 output format containers: MP4, MKV, and WebM.

Step 4. If needed, you can switch to other tabs next to the Summary to tweak the output parameters.

Step 5. Hit the bottom-right Browse button to set a file destination.

Step 6. Finally, click on the top Start button to begin converting .avi file to .mp4.

VLC Media Player is another free tool you can try for this AVI-to-MP4 conversion. This open-source media player can work with a wide range of media files. So, you can not only use it to process AVI video files but also MKV, MOV, TS, more, and even DVDs, and CDs.

Follow these instructions to convert AVI to MP4 using this media player:

Step 1. Download and install VLC Media Player from here: https://www.videolan.org/

Step 2. After installation, open it up and go to Media followed by Convert / Save.

Step 3. Then click + Add to add your .avi files.

Step 4. Keep going with the Convert / Save button to enter the Convert window.

Step 5. Select H.264 + MP3 (MP4) as the output format. Then click the Edit selected profile icon to modify codecs, resolution, quality, etc. Hit Save to confirm the changes.

Step 6. Click Browse to set an output folder. Finally, click the Start button and wait for the conversion process. You can check the progress below the seek bar.

If you have some coding knowledge, you will find FFmpeg a great option. This open-source, command line tool can process video, audio, and other multimedia files and streams. With it, you can quickly convert and edit a .avi file to .mp4 with desired quality and effects.

See how to make FFmpeg change video format with ease on a PC:

Step 1. Visit https://ffmpeg.org/ to download and install it.

Step 2. Navigate to the folder where you saved the AVI video. Type “cmd” to replace its file path. Then press Enter to bring up the FFmpeg command window.

Step 3. Run the following command:
ffmpeg -i input_filename.avi output_filename.mp4

Then FFmpeg knows how to re-encode your AVI video to format MP4 and automatically figure out the rest of settings.

If you want to remux AVI to MP4 without losing quality, execute this command:
ffmpeg -i input_filename.avi -c:v copy -c:a copy output_filename.mp4

Step 4. Make sure you enter the right command line and press Enter to start the conversion at once. You’ll find the output video file in the same folder as the input file.

How to convert AVI to MP4 without downloading software? The answer is an online video converter. Compared with the desktop solution, they are typically more convenient. Here I’d like to recommend ConvertFiles. It requires no sign-up and is easy to use!

Now, we’ll guide you on how to convert .avi to .mp4 online:

Step 1. Visit https://www.convertfiles.com/convert/video/AVI-to-MP4.html

Step 2. Click Browse to select the AVI video you want to convert.

Step 3. From the Output format given options, select MPEG-4 Video File (.mp4).

Step 4. Click on the Convert button to start the conversion process.

Step 5. Once the download is finished, go on with the texts “Click here to go to the download page”.

Step 6. Then click the download link to save the export .mp4 file to your device at once.

That’s all about how to convert AVI to MP4 on Windows, Mac, and online. Hopefully, with the above 5 methods, you could easily get an MP4 video with the desired quality.

To convert AVI video to MP4 for free, you can use Handbrake, VLC, FFmpeg, WonderFox Free HD Video Converter Factory, ConvertFiles, etc.

Choose a conversion tool listed in this article and then follow the offered tutorials so that you can quickly turn an AVI file into MP4.

There is no such one-size-fits-all solution. Different people have different needs when it comes to converting AVI files to MP4.

For Windows users who need to process AVI files in bulk and have editing needs, WonderFox HD Video Converter Factory Pro is the best option.

However, for those who only need to convert files occasionally, a free desktop converter or an online service is the better choice.