Overview: There are plenty of good reasons that you would want to convert large AVI Files to MP4. It has multiple advantages like small size, higher compatibility and smooth playing on multi-platform. So, in this blog, you’ll learn how to convert large size AVI video files to MP4 format easily both manually and professionally.

Also Read: Convert Video to MP4

Why Convert AVI Files to MP4?

Before we proceed to the solutions, let’s talk about why you should convert AVI to MP4:

• Firstly, AVI files are large since they have a low compression rate. 
• MP4 meanwhile utilizes high-tech codecs such as H.264 and H.265 to compress file sizes while maintaining video quality.
• It works pretty much in every operating system like macOS and Linux to smart TVs and web browsers.
• Given their smaller size and superior compression, MP4 files are perfect for uploading to websites like YouTube, Vimeo or even Google Drive.
• They also stream more quickly, using less bandwidth.

Manual Methods to Convert Large AVI Files to MP4

If you’re interested in attempting to convert your AVI videos manually. Here are a few free tools you can use.

#1. Using VLC Media Player

VLC video players tend to have a low self-esteem for some reason. I don’t know what that is about or even might be.

Steps:

• Open VLC Media Player.
• Go to Media > Convert / Save.
• Click on the AVI file that you want to convert and click Convert / Save.
• Select Video – H.264 + MP3 (MP4) from the Profile category.
• Select the destination folder and rename the file if you wish.
• Lastly, press Start to convert the files.

Limitations:

• Can run slower on big AVI files.
• May result in quality disruption or codec issues.
• Limited control of output parameters such as resolution and frame rate.

#2. Online AVI to MP4 Converters 

There are a number of online tools which will help you convert AVI to MP4. 

• Go to a reliable online converter.
• Upload your AVI file.
• Select MP4 as the output format.
• Begin converting and downloading the converted file.

Limitations:

• File upload size limits (often less than 500MB).
• Requires stable internet connection.
• Potential privacy risk when uploading large or private videos.
• Big AVI files are processed slowly.

Convert Large AVI Files to MP4 – Professional Solution

When you are working with a number of AVI files or large size video, it is better to use an expert tool such as SysTools Video Converter Software. It is easy to use, and supports high-speed and quality-lossless conversion of multiple video formats. The application runs exclusively on high-definition large video files including AVI, over a gig in size. Unlike other free converters, online tools that are either full of bugs or restricted file size, we give you the uninterrupted conversion with all its glory in a controlled environment. If you need to convert video for our mobile devices, the application will not disappoint.

Key Features:

• Convert large AVI files to MP4 and 20+ formats.
• Keep 100% original video and audio quality.
• Conversion in batches, converting multiple AVI files at one time.
• Select output resolution, codec, quality level.
• Gives high quality (HD) support 720P, 1080P and 4K video.
• Simple and intuitive user interface.
• Supports Windows 11,10,8,7.

Conclusion

You will need to convert large files to MP4 format in order to play your videos on a variety of devices, smaller file size and compatibility. Free tools like VLC and HandBrake can cope with some simple conversions, but that’s about it. For anything more complex they’re ineffective or simply not up to the job at all. So, using our professional solution is the best application for fast and quick conversion. It’s built to handle huge AVI files with ease, providing a smooth solution for converting them into MP4, all without losing picture quality or risking your data.