ChangeMyFile - Free Online File Converter

ChangeMyFile

Free MP4 AVI to Converter Online

Fast, Free, Secure & Simple

Looking for the best MP4 to AVI converter online? You're in the right place! Change My File is your go-to free MP4 to AVI converter that makes converting video files quick, simple, and hassle-free. No software download, no sign-up, no limitations — just pure online video conversion.

Why Choose Our Free MP4 to AVI Converter?

  1. Convert MP4 to AVI Online for Free
  2. Upload your MP4 file and get it converted to AVI format in just a few clicks — no hidden fees, no watermarks.
  3. Fast & Reliable File Conversion
  4. Enjoy fast MP4 to AVI file conversion with our powerful cloud-based tool that works directly from your browser.
  5. Supports All Devices
  6. Whether you're using Windows, Mac, Android, or iOS — our online video converter works everywhere.
  7. Secure & Private
  8. Your files are safe. We automatically delete all uploaded and converted files after a short time to ensure privacy.

How to Convert MP4 to AVI Online?

  1. Click the “Choose File” button and upload your MP4 video.
  2. Wait for the file to upload and conversion to begin.
  3. Download your AVI file instantly – 100% free.

Best MP4 to AVI Converter – No Download Needed

Unlike downloadable software, our online MP4 to AVI converter works directly in your browser. This means no installation, no device storage issues, and no annoying ads. It’s perfect for students, content creators, marketers, and casual users.

What is the AVI Format & Why Convert?

AVI (Audio Video Interleave) is a widely supported video format compatible with most media players and editing software. If you're looking to:

  1. Play videos on older devices
  2. Reduce file size without major quality loss
  3. Ensure compatibility with legacy media players

… then converting MP4 to AVI is the right choice.

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Convert MP4 to AVI Free – Anywhere, Anytime

Whether you're on a desktop, tablet, or smartphone, our online MP4 to AVI tool gives you instant access to high-quality conversion without requiring any software. Just upload your MP4 video and let our tool handle the rest.

Try the Best Online MP4 to AVI Converter Now!

Don’t waste time with bulky downloads or complicated software. Use Change My File, the most reliable and free MP4 to AVI video converter online, trusted by thousands of users daily. Fast, safe, and totally free.

Frequently Asked Questions

Is this MP4 to AVI Converter really free?

Yes! Our tool is completely free to use — no sign-up, no credit card required.

Do I need to install any software?

No, this is an online MP4 to AVI converter. It works from your browser without downloading anything.

Is there a file size limit?

We support large files, but extremely large files may take longer to process depending on your internet speed.

MP4 Technical Specifications

File extension.mp4
File categoryVideo
Stands forMPEG-4 Video stream
DeveloperMoving Picture Experts Group
OverviewIt 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 descriptionMPEG-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

AVI Technical Specifications

File extension.avi
File categoryVideo
Stands forAudio Video Interleave
DeveloperMicrosoft
OverviewThis 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 descriptionIn 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.
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MP4 To Other Extensions

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