Looking to convert AVI to MP4 online for free? You're in the right place! Change My File is the fastest and easiest AVI to MP4 converter that works right from your browser. No downloads, no watermarks – just smooth, high-quality video conversion within seconds.

Why Convert AVI to MP4?

The AVI format is widely used, but it’s not always compatible with modern devices or browsers. On the other hand, MP4 is a universal video format supported on nearly every platform – including smartphones, tablets, and smart TVs.

By using our free AVI to MP4 converter, you’ll get:

Smaller file sizes without losing quality
Instant video playback on any device
Compatibility with editing software and social platforms
Better streaming performance

Convert AVI to MP4 in 3 Easy Steps

Upload Your AVI File
Click the upload button and select your .avi file from your device.
Convert Instantly
Our tool quickly converts your AVI to high-quality MP4 using advanced online video conversion technology.
Download MP4 Video
Once the process is done, download your MP4 video with just one click.

Features of Our Free AVI to MP4 Converter

Fast & Secure Online AVI to MP4 Converter

Convert your videos with lightning speed – all your files are automatically deleted after processing to ensure complete privacy.

No Software Needed

This is a browser-based AVI to MP4 converter, so you don’t need to install anything. It works on Chrome, Firefox, Edge, Safari, and more.

100% Free – No Hidden Charges

We don’t charge for converting your AVI to MP4. No sign-ups, no restrictions.

HD Video Quality

Maintain your video’s resolution and clarity. Our AVI to MP4 video converter delivers top-quality output every time.

What Makes Us the Best Online AVI to MP4 Converter?

Supports large AVI files (up to 2GB)
Batch conversion options coming soon
Compatible with Windows, Mac, Android, and iOS
Designed for speed, simplicity, and convenience
Zero ads, zero hassle

Use Cases: When to Convert AVI to MP4

Sharing AVI files on YouTube, Facebook, or Instagram
Editing AVI videos in Adobe Premiere, Final Cut Pro, or iMovie
Watching AVI videos on mobile or smart TVs
Compressing large AVI files into smaller MP4 formats for emails or websites

FAQ – AVI to MP4 Video Conversion

Q: Can I convert AVI to MP4 without losing quality?

Yes, Change My File ensures high-quality video conversion while keeping the file size optimized.

Q: Is this AVI to MP4 converter really free?

Absolutely! No fees, no limitations.

Q: Does this work on Mac and Windows?

Yes, our AVI to MP4 converter online works on all major operating systems.

Start Converting Your AVI Files to MP4 Now

Stop wasting time with complicated software. Change My File makes it simple to convert AVI to MP4 online for free — quickly, securely, and with no strings attached.

Try it now – Upload your AVI video and get your MP4 file in seconds!

Information about MP4

File extension

mp4

File category

Video

Stands for

MPEG-4 Video stream

Developer

Moving Picture Experts Group

Overview

It stores multimedia data. It is commonly used by manufacturers (those produce mobile products) as well as by Apple for audio, video and still images. It offers higher flexibility and is compatible with both audio and video files. The Format provided by these files i.e MPEG-4 is commonly used online for streaming the videos. Any Movie, video or Audio file can be easily downloaded or streamed online with this extension which can be free or chargeable as well, such as downloading from iTunes. The payment can be made using credit or debit cards. These files may also include audio books, photos, podcasts, songs, movies, not making them limited to just audios and videos. This format has become more common as they are being used in iPod and PlayStation Portable(PSP). Commonly portable media players are advertised as “MP4 players” although they are capable of playing other media format as well like ‘AMV format'.

Technical description

MPEG-4 files are officially named under extension .mp4 and this is the only official extension for MPEG-4 PART-14 formats. These files were introduced in 2001 under the standards of ISO/IEX 14496-1:2001. It runs on AAC encoding which restricts the users from copying the data of the files. The data embedding can be done on these files using any private stream. For instance, hint tracks to add the streaming information into the file. These files are similar to most of the modern containers containing data information which allows internet streaming.

Links

wikipedia.org

Information about AVI

File extension

avi

File category

Video

Stands for

Audio Video Interleave

Developer

Microsoft

Overview

This file format stores both audio and video files for playback purposes. It is used to store files that are of high quality as file compression is less in this extension. Windows OS uses this as the default format to store multimedia files but other operating systems such as Linux, Unix and Mac also support this. The data in it is encoded by various codecs such as DivX and XviD. There is a variety of software that support these files. For instance- Microsoft Movies & TV, Windows Media Player and Apple QuickTime player; etc. Due to its low compression ability, it is widely used to make short movies, promos and advertisements; etc. It should be noted that AVI format result in large files that is why it is rarely used for video streaming.

Technical description

In AVI extension, file's data is divided into blocks or chunks as it is a sub-format of RIFF(Resource Interchange file format). An identification of each chunk is done by FourCC tag. File header and metadata of video(like height, width and frame rate) are identified by ‘hdrl tag' which is sub-chunk and it is mandatory. There is one another chunk which is also obligatory that is ‘movi tag' and it has actual audio or video data. The last sub-chunk is ‘idx1 tag' and it records the offsets of the data chunks. This ‘idx1 tag' is completely optional. There is one limitation of this format that it does not contain variable bitrate data.

Links

wikipedia.org

Free AVI to MP4 Converter Online

Why Convert AVI to MP4?

Convert AVI to MP4 in 3 Easy Steps

Features of Our Free AVI to MP4 Converter

Fast & Secure Online AVI to MP4 Converter

No Software Needed

100% Free – No Hidden Charges

HD Video Quality

What Makes Us the Best Online AVI to MP4 Converter?

Use Cases: When to Convert AVI to MP4

FAQ – AVI to MP4 Video Conversion

Start Converting Your AVI Files to MP4 Now

Information about MP4

Information about AVI