AVIF to MP4 Converter - Animated AVIF to MP4 Video Free

How to convert AVIF to MP4

Add your AVIF files. Drop up to 20 AVIF files into the box. Animated ones show their frames under the preview.
Pick quality and speed. Balanced is the default. Change the speed, or repeat the animation so it lasts longer - videos do not loop by themselves.
Pick a background. MP4 has no transparency, so transparent areas get a colour. White is the default.
Make the MP4 and download. Press Make my MP4. The video is encoded in your browser and downloads straight away.

Need it as a WebM for a website too? Use MP4 to WebM, or browse all video converters.

Animated AVIF is great on websites, but most apps cannot play it.

Instagram, TikTok, WhatsApp, PowerPoint, video editors and smart TVs all want video.

MP4 with H.264 is the most widely supported video format there is, and it stays small.

Need a WebM for a website instead? Use AVIF to WebM. Test files are in the AVIF sample files.

Short animations? Use Repeat 3x or 5x - many players stop after one pass.
Transparency becomes the background colour, because MP4 video cannot be see-through.
Browser support - Chrome, Edge, Firefox and Safari 17 make videos. Keeping the animation needs Chrome, Edge or Firefox.
Odd sizes get one pixel of background, because H.264 needs even widths and heights.

Drop the AVIF into the box, keep the Balanced quality and press Make my MP4. Every frame goes into the video with its original timing.

No. Your browser decodes the frames and encodes the MP4 with WebCodecs, right on your device.

Yes. Repeat plays the animation up to 20 times in a row, and Speed slows it down to half speed.

MP4 has no transparency, so transparent areas get the background colour you pick. For a transparent animation use AVIF to GIF or AVIF to WebP.

Yes. A still image becomes a video of 3 to 60 seconds - handy for stories and slideshows.

H.264, which plays everywhere. If your browser has no H.264 encoder, it uses AV1 or VP9 inside the MP4 and says so.

Video encoding needs WebCodecs - the latest Chrome, Edge, Firefox or Safari 17 and later.