Free Online MP4 to AVIF Converter

Use our free-to-use and fast MP4 to AVIF file converter to expertly convert your MP4 files perfectly into the AVIF file format, ready for further editing or use in your favourite AVIF file editing application. Our tool can also batch convert your MP4 files, enabling you to convert up to 20 files in one go.

Select File(s)

Or drag and drop your files here to upload.
A maximum of 20 files can be uploaded at once.

Please note: Your MP4 file, once uploaded to our server, will be deleted 15 minutes after upload, so please download your converted MP4 file before this time.

Use the button above to select the MP4 files you wish to upload; once selected, you can click the Upload button to start the conversion. Once all your files have been converted, you will be able to download your AVIF files either individually or all together in a compressed ZIP file.

How to Convert your MP4 to AVIF Online?

Here are two simple steps to convert your MP4 to AVIF using our fast and free MP4 converter tool.

Upload your MP4 file

Click the "Upload a MP4 File" button, then select a MP4 to upload. The maximum file size is 100MB.

Download your AVIF

Click the download link to receive your AVIF file.

Frequently Asked Questions

How can I convert my MP4 file to AVIF?

First, click the "Upload..." button and select your MP4 file to upload. Your MP4 file will be uploaded to our servers. When the MP4 to AVIF conversion has completed, you can download your AVIF file right away.

How long does it take to convert my MP4 to AVIF?

We aim to process all MP4 to AVIF conversions as quickly as possible; this usually takes around 5 seconds; however, this can be longer for certain files, so please be patient.

How accurate is the MP4 to AVIF conversion?

We aim to provide the best conversion experience. Our tools are under constant review and development, with new features being added every week.

File format information for MP4 and AVIF

Extension	MP4
Full Name	MPEG-4
Type	Video
Mime Type	video/mp4
Format	Binary

An MP4 file is a modern standard format for storing high-quality motion video in a highly compact and efficient file size. The specific compression algorithm used within an MP4 file can vary from file to file; however, they all enable what would otherwise be a large amount of uncompressed data to be reduced to a fraction of the original size with little or no noticeable difference in playback quality.

Due to their widespread support, MP4 files can be loaded into most video editing applications and played with most video playback software with no additional drivers. Most video sharing sites, such as YouTube, support MP4 as a format when uploading, and most tablets and smart phones can record in the MP4 format.

Audio stored within an MP4 file is usually stored in the MP3 format, taking advantage of that format's high quality and compression capabilities.

Extension	AVIF
Full Name	AV1 Image File Format
Type	Image
Mime Type	image/avif
Format	Binary
Opens With	Paint.Net

The AVIF file format is aimed at being a modern replacement for the popular JPEG image format. Developed by the Alliance for Open Media, AVIF is an advanced image file format that leverages the cutting-edge compression algorithms used by the AV1 video codec.

The aim of the format is to surpass the quality of the equivalent JPEG file while packing a smaller file size via the use of the AV1 compression algorithm. The aim of the compression algorithm, which is a lossy algorithm, is to reduce the file size by removing detail from the image that the eye would not normally notice, thus reducing the size of the final AVIF file.

Support for AVIF files is still growing, with many modern image editors able to read and write to the format. The latest versions of the most popular web browsers have also moved to support AVIF images, having seen the benefit to website developers of reduced image sizes and thus reduced bandwidth usage.