How to Convert AVI to MP4 on Windows/Mac/Online? Solved in 7 Effective Ways

AVI is an earlier video format. Although it offers good image quality, it usually comes with large file sizes and limited compatibility, meaning it often cannot play smoothly on phones, web pages, or social media platforms. In contrast, MP4 is almost a universal format with strong compatibility, smaller file size, and faster loading. Therefore, converting AVI to MP4 has become a common need in video processing.

So, how can you convert AVI to MP4? This article introduces seven practical methods suitable for Windows, Mac, and online tools.

Part 1. How to Convert AVI to MP4 Without Losing Quality

If you are looking for high-quality, fast conversion, and batch processing, a professional tool is the most reliable choice, such as Video Converter Ultimate. This AVI to MP4 video converter allows you to convert AVI to MP4 in just a few simple steps, without any quality loss. It supports converting video and audio files into over 1,000 formats, and the conversion speed is 30× faster, so you can complete the task in just a few seconds.

In addition to conversion features, its editing tools are also quite impressive. With it, you can easily add external audio tracks and watermarks, as well as trim or crop videos. It also comes with new features such as a video compressor.

Key features of Video Converter Ultimate:

• Convert AVI to MP4 on a computer conveniently.
• Great video encoding technology to produce the best image quality.
• Support encoding formats like H.265/HEVC, H.264, VP8, VP9, etc
• Convert videos and audio to more than 1000 formats.
• Support HD, 4K to 8K conversion.

Free Download for PC

 

Free Download for Mac

Here is how to convert AVI to MP4 using Video Converter Ultimate:

Part 2. How to Convert AVI to MP4 for Free

Is there a free AVI to MP4 converter? If you prefer free solutions for converting AVI to MP4, there are a few options available.

2.1 Using VLC Media Player (Windows & Mac)

VLC Media Player is not just a media player but also a free, open-source, and cross-platform AVI to MP4 converter for Mac/Windows/Linux. Apart from AVI, it can convert other formats as well. Moreover, you can compress a video using VLC.

Here is how to convert AVI to MP4 for free, with no limit, using VLC:

Step 1. Launch VLC on your Windows or Mac, then click the "Media" menu and select "Convert/Save".

Step 2. In the "File" section, click "Add" to choose the AVI video you want to convert and click "Convert/Save" to continue.

Step 3. In the "Profile" list, select "Video – H.264 + MP3 (MP4)".

Step 4. Click "Browse" to set the output file name and destination, then press "Start" to begin the conversion.

2.2 Using HandBrake (Windows & Mac)

HandBrake is a free, open-source application that can convert AVI files to formats such as MP4, MKV, WebM, and MOV. It offers a wide range of output settings, including audio tracks, subtitles, and filters, allowing you to customize your videos as needed.

However, it depends on CPU-based software encoding, so converting large or high-resolution AVI files can be slow. In addition, some AVI files using older codecs may not be supported or may fail to import.

Here is how to convert AVI to MP4 using HandBrake:

Step 1. Open HandBrake on your Windows or Mac computer. Drag and drop your AVI file into the program, or click "File" to import the source video from your local folder.

Step 2. Click "Preset" and choose the option that best suits your needs. In the "Summary" tab, set the format to "MP4". You can also review audio and video details in the "Tracks" section.

Step 3. Click the green "Start Encode" button to begin converting AVI to MP4.

2.3 Using FFmpeg (Windows & Mac)

FFmpeg is a powerful command-line tool used for professional video processing. It is one of the fastest and most flexible ways to perform AVI to MP4 conversion. It allows full control over encoding and is ideal for batch automation.

Here is how to convert AVI to MP4 via FFmpeg:

Step 1. Install FFmpeg on your system.

Step 2. Open Command Prompt (Windows) or Terminal (Mac).

Step 3. Run the following command: "ffmpeg -i input.avi output.mp4".

Step 4. Press "Enter" to execute the AVI to MP4 conversion.

Step 5. Wait until the output MP4 file is generated.

2.4 Using QuickTime (Mac)

If you are using a Mac but don't like the idea of installing software, you can use QuickTime Player to convert your AVI videos to MP4. It has a clear and simple interface and easily opens AVI files you wish to convert and then changes them to MP4. It is free, and you do not have to install an extension. However, it has limited format support and customization options.

Here is how to convert AVI to MP4 on Mac using QuickTime:

Step 1. Open your AVI file with QuickTime Player (right-click the file → "Open With" → "QuickTime Player").

Step 2. Once the video is playing, go to the top menu and click "File" → "Export As".

Step 3. Choose a resolution option (such as 1080p, 720p, etc.).

Step 4. In the save dialog, ensure the file format is exported as MP4 (QuickTime exports in MP4/MOV-compatible format by default).

Step 5. Select a destination folder, enter a file name, and click "Save" to start exporting.

Part 3. How to Convert AVI to MP4 Online

If you prefer not to install additional software, you can convert AVI to MP4 online. There are various online converters available, but two popular options are:

3.1 Using CloudConvert

CloudConvert is a reliable online file conversion platform that supports AVI to MP4 conversion with good output quality. It offers stable performance and supports many video formats.

Here is how to convert AVI to MP4 for free online via CloudConvert:

Step 1. Visit the CloudConvert AVI to MP4 website and click "Select File" to upload your AVI video.

Step 2. Make sure AVI is selected as the input format and MP4 as the output format. You can also click the settings icon to adjust video options if needed.

Step 3. Click "Convert" to start the AVI-to-MP4 conversion process.

Step 4. Wait for the conversion to finish. The time required depends on your file size and internet speed.

Step 5. Click "Download" to save the converted MP4 file to your device.

3.2 Using FreeConvert

FreeConvert is another popular online tool that supports AVI to MP4 conversion with a simple interface and optional compression settings. It supports larger files and provides basic optimization options. The process is very simple, but the free version comes with certain limitations.

Here is how to convert AVI to MP4 online with FreeConvert:

Step 1. Go to the FreeConvert AVI to MP4 website and click "Choose Files" to upload your AVI video from your device, Google Drive, Dropbox, or a URL.

Step 2. Confirm that AVI is selected as the input format and MP4 as the output format.

Step 3. (Optional) Click the "Advanced Settings" icon to customize video parameters such as codec, resolution, frame rate, or compression level.

Step 4. Click "Convert" to start converting the AVI file to MP4.

Step 5. Once the conversion is complete, click "Download" to save the MP4 file to your computer or mobile device.

Conclusion

That's all about how to convert AVI to MP4. Several solutions exist to help you change an AVI file to MP4, including online tools and free tools. You can effortlessly convert your videos to an MP4 file format that's compatible with most devices. We recommend Video Converter Ultimate. It is the best AVI to MP4 converter with advanced features and top-notch video enhancing technology.

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